Ana Getaldić, M. Surić Mihić, Galla Uroić, Ž. Veinović
Having access to relevant data is essential for ensuring the quality and outreach of research work. In the context of the nuclear field, access to information and data facilitates competence building, long-term professional development, research, and information dissemination. Potential users of nuclear information resources come from different domains: scientists, experts, students, and the public. One of the main roles of the International Atomic Energy Agency (IAEA) is to ensure and promote peaceful uses of atomic energy worldwide. Through their activities, the IAEA strongly encourages the exchange of scientific and technical information. This paper presents an overview of different nuclear and radiological data available in several International Atomic Energy Agency databases. All data is available free of charge for educational and informational use. A summary of information is given for each database presented on the content, access options, copyright, acknowledgement, and dissemination of the available information. A concise summary of this various data might help in capacity building, as well as encourage research and information sharing between different stakeholders in the field.
{"title":"NUCLEAR AND RADIOLOGICAL DATA AVAILABLE IN THE INTERNATIONAL ATOMIC ENERGY AGENCY (IAEA) DATABASES","authors":"Ana Getaldić, M. Surić Mihić, Galla Uroić, Ž. Veinović","doi":"10.17794/rgn.2023.1.5","DOIUrl":"https://doi.org/10.17794/rgn.2023.1.5","url":null,"abstract":"Having access to relevant data is essential for ensuring the quality and outreach of research work. In the context of the nuclear field, access to information and data facilitates competence building, long-term professional development, research, and information dissemination. Potential users of nuclear information resources come from different domains: scientists, experts, students, and the public. One of the main roles of the International Atomic Energy Agency (IAEA) is to ensure and promote peaceful uses of atomic energy worldwide. Through their activities, the IAEA strongly encourages the exchange of scientific and technical information. This paper presents an overview of different nuclear and radiological data available in several International Atomic Energy Agency databases. All data is available free of charge for educational and informational use. A summary of information is given for each database presented on the content, access options, copyright, acknowledgement, and dissemination of the available information. A concise summary of this various data might help in capacity building, as well as encourage research and information sharing between different stakeholders in the field.","PeriodicalId":44536,"journal":{"name":"Rudarsko-Geolosko-Naftni Zbornik","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68156065","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
V. Herceg, Mario Klanfar, Karolina Herceg, D. Domitrović
A hydraulic excavator is widely used in crushed stone quarries to perform many different operations. Previous research on material handling by excavators is most often based on laboratory testing and observation of soil materials and the digging forces in them. These results are very difficult to transfer to fieldwork during the quarrying process. Therefore, in this work, the energy consumption of an excavator while working in typical materials for a crushed stone quarry was investigated. The field measurements were performed on overburden, blasted rock material, boulders, and two different crushed materials. Energy consumption was observed only during the portion of the cycle in which the bucket digs the material. In this way, the energy consumption was mainly related to the properties of the material. The highest energy consumption was found for blasted rock material, lower in overburden, and the lowest for boulders and crushed materials. These results are important for organizing an optimal distribution of machines according to the work tasks in the quarry and ultimately for energy savings.
{"title":"SPECIFIC ENERGY CONSUMPTION OF MATERIAL HANDLING BY EXCAVATOR IN THE QUARRYING OF CRUSHED STONE","authors":"V. Herceg, Mario Klanfar, Karolina Herceg, D. Domitrović","doi":"10.17794/rgn.2023.1.8","DOIUrl":"https://doi.org/10.17794/rgn.2023.1.8","url":null,"abstract":"A hydraulic excavator is widely used in crushed stone quarries to perform many different operations. Previous research on material handling by excavators is most often based on laboratory testing and observation of soil materials and the digging forces in them. These results are very difficult to transfer to fieldwork during the quarrying process. Therefore, in this work, the energy consumption of an excavator while working in typical materials for a crushed stone quarry was investigated. The field measurements were performed on overburden, blasted rock material, boulders, and two different crushed materials. Energy consumption was observed only during the portion of the cycle in which the bucket digs the material. In this way, the energy consumption was mainly related to the properties of the material. The highest energy consumption was found for blasted rock material, lower in overburden, and the lowest for boulders and crushed materials. These results are important for organizing an optimal distribution of machines according to the work tasks in the quarry and ultimately for energy savings.","PeriodicalId":44536,"journal":{"name":"Rudarsko-Geolosko-Naftni Zbornik","volume":"38 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68156246","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Nugraheni, Widya Anggraini, Naily S. Setiawan, C. P. Riyandhani, D. Syavitri, D. Sunjaya, Agustinus Nopi, I. Sukadana
The rising demand for scandium led to massive exploration activities for its discovery from mining by-products. Therefore, this study attempts to delineate the distribution of scandium-bearing minerals in the surrounding bauxite mining area, Tayan District, West Kalimantan Province, Indonesia. Preliminary studies were conducted by applying optical sensors to discriminate the types of minerals, such as kaolinite, gibbsite, goethite, and quartz. The spectral information aids the reconnaissance study by providing data on specific rocks and minerals using the short-wave infrared (SWIR), processed into a series of bands with spectral ranges from 0.35 to 2.5 μm. The data was then compared with the structural lineament from the ALOS PALSAR imagery to infer the prospective area with the structural pattern. The integrated band math minerals and geochemical data taken from X-ray fluorescence and Inductively Coupled Plasma-Mass Spectrometry suggest that the Sc-bearing minerals were disseminated predominantly on the bauxite laterite profile from pyroxene diorite and diorite parent rock weathering. The spectral range for goethite as the Sc-bearing minerals is from 0.43 to 1.03, with the main absorption features from 2.0 to. 2.4. Furthermore, goethite is mainly concentrated at the top bauxite horizon associated with the structurally related hill. The ore-bearing minerals also occupied the tailing pond and some beneficiation areas in relatively minor proportion. This study is undoubtedly valuable for the practical need to support mineral exploration through remote predictive mapping.
{"title":"MULTISPECTRAL REMOTE SENSING TO DELINEATE THE DISTRIBUTION AREA OF SCANDIUM-BEARING MINERALS IN BAUXITE MINING SITES, WEST KALIMANTAN PROVINCE, INDONESIA","authors":"R. Nugraheni, Widya Anggraini, Naily S. Setiawan, C. P. Riyandhani, D. Syavitri, D. Sunjaya, Agustinus Nopi, I. Sukadana","doi":"10.17794/rgn.2023.1.2","DOIUrl":"https://doi.org/10.17794/rgn.2023.1.2","url":null,"abstract":"The rising demand for scandium led to massive exploration activities for its discovery from mining by-products. Therefore, this study attempts to delineate the distribution of scandium-bearing minerals in the surrounding bauxite mining area, Tayan District, West Kalimantan Province, Indonesia. Preliminary studies were conducted by applying optical sensors to discriminate the types of minerals, such as kaolinite, gibbsite, goethite, and quartz. The spectral information aids the reconnaissance study by providing data on specific rocks and minerals using the short-wave infrared (SWIR), processed into a series of bands with spectral ranges from 0.35 to 2.5 μm. The data was then compared with the structural lineament from the ALOS PALSAR imagery to infer the prospective area with the structural pattern. The integrated band math minerals and geochemical data taken from X-ray fluorescence and Inductively Coupled Plasma-Mass Spectrometry suggest that the Sc-bearing minerals were disseminated predominantly on the bauxite laterite profile from pyroxene diorite and diorite parent rock weathering. The spectral range for goethite as the Sc-bearing minerals is from 0.43 to 1.03, with the main absorption features from 2.0 to. 2.4. Furthermore, goethite is mainly concentrated at the top bauxite horizon associated with the structurally related hill. The ore-bearing minerals also occupied the tailing pond and some beneficiation areas in relatively minor proportion. This study is undoubtedly valuable for the practical need to support mineral exploration through remote predictive mapping.","PeriodicalId":44536,"journal":{"name":"Rudarsko-Geolosko-Naftni Zbornik","volume":"31 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68156528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Resource estimation is one of the most important steps in the mining process. Precise resource estimation has a significant influence on the optimization of subsequent mining steps, i.e. mine planning and scheduling. The previous resource estimation in the Angouran Mine was conducted based on the provided information in the local coordinate system which causes considerable errors in estimations. Therefore, an attempt is made in this research to optimize the block model of the Angouran Mine and resource estimation based on the information in the UTM global coordinate system. For this purpose, exploratory data is firstly transferred from the local coordinate system to the UTM environment. Then, block model optimization is conducted using indicator kriging (IK) in which the waste blocks are removed and the block model was optimized. Finally, resource estimation is performed using the inverse distance weighting (IDW) and simple kriging (SK) methods. After variogram analyses in different directions, it was found that the mine deposit is anisotropic. Also, validation results showed that the acquired correlation coefficient in the carbonate and sulfide sections for IDW, SK and IK is 0.86, 0.87 and 0.92, and 0.88, 0.87 and 0.92, respectively. Finally, the obtained grades and tonnages are compared with the actual data of the exploratory boreholes, mined blocks and previous resource estimation in the mine. Comparative results showed that the obtained grades and tonnages from both previous and new models are over-estimated and higher than the actual values. The minimum errors of grade estimation equal 46% and 23.1% for previous and new resource estimations (before and after the waste removal), respectively. Also, the mining errors of tonnage estimation are 50.29% and 28.37% for previous and new models, respectively. This field comparison proved that transferring the exploratory data to the UTM system, utilization of the IK to remove the waste blocks and applying the SK for resource estimation lead to the optimization of the block model and a reduction in the estimation error compared to the previous estimations for the mine.
{"title":"BLOCK MODEL OPTIMIZATION AND RESOURCE ESTIMATION OF THE ANGOURAN MINE BY TRANSFERRING THE EXPLORATORY DATA FROM THE LOCAL COORDINATE SYSTEM TO THE UTM","authors":"M. Rezaei, S. Fallahi","doi":"10.17794/rgn.2023.3.1","DOIUrl":"https://doi.org/10.17794/rgn.2023.3.1","url":null,"abstract":"Resource estimation is one of the most important steps in the mining process. Precise resource estimation has a significant influence on the optimization of subsequent mining steps, i.e. mine planning and scheduling. The previous resource estimation in the Angouran Mine was conducted based on the provided information in the local coordinate system which causes considerable errors in estimations. Therefore, an attempt is made in this research to optimize the block model of the Angouran Mine and resource estimation based on the information in the UTM global coordinate system. For this purpose, exploratory data is firstly transferred from the local coordinate system to the UTM environment. Then, block model optimization is conducted using indicator kriging (IK) in which the waste blocks are removed and the block model was optimized. Finally, resource estimation is performed using the inverse distance weighting (IDW) and simple kriging (SK) methods. After variogram analyses in different directions, it was found that the mine deposit is anisotropic. Also, validation results showed that the acquired correlation coefficient in the carbonate and sulfide sections for IDW, SK and IK is 0.86, 0.87 and 0.92, and 0.88, 0.87 and 0.92, respectively. Finally, the obtained grades and tonnages are compared with the actual data of the exploratory boreholes, mined blocks and previous resource estimation in the mine. Comparative results showed that the obtained grades and tonnages from both previous and new models are over-estimated and higher than the actual values. The minimum errors of grade estimation equal 46% and 23.1% for previous and new resource estimations (before and after the waste removal), respectively. Also, the mining errors of tonnage estimation are 50.29% and 28.37% for previous and new models, respectively. This field comparison proved that transferring the exploratory data to the UTM system, utilization of the IK to remove the waste blocks and applying the SK for resource estimation lead to the optimization of the block model and a reduction in the estimation error compared to the previous estimations for the mine.","PeriodicalId":44536,"journal":{"name":"Rudarsko-Geolosko-Naftni Zbornik","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68157839","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yukni Arifianti, P. Pamela, P. Iqbal, S. Sumaryono, A. Omang, H. Lestiana
A catastrophic Palu earthquake on September 28th, 2018 with Mw 7.5 triggered countless slope failures, generating numerous landslides. This paper presents a practical method for susceptibility assessment of earthquake-induced landslides in the Palu region and the surrounding area. The statistical weight of evidence (WoE) model was used to assess the relationship between landslides induced by seismic motion and its causative factors to determine the susceptibility level and derive an earthquake-induced landslide susceptibility map of this study area. The 1273 landslides were classified into two data series, training data for modelling (70%) and test data for validation (30%). The six selected thematic maps as landslide causative factors are lithology, land use, peak ground acceleration (PGA), and slope (gradient, aspect, elevation). The selection of causative factors considerably influences the frequency of landslides in the area. The result is satisfactory because the AUC value of the chosen model excelled the minimum limit, which is 0.6 (60%). The estimated success rate of the model is 85.7%, which shows that the relevancy of the model is good with the occurrence of landslides. The prediction rate of 84.6% indicates that the applied model is very good at predicting new landslides.
{"title":"SUSCEPTIBILITY ASSESSMENT OF EARTHQUAKE-INDUCED LANDSLIDES: THE 2018 PALU, SULAWESI MW 7.5 EARTHQUAKE, INDONESIA","authors":"Yukni Arifianti, P. Pamela, P. Iqbal, S. Sumaryono, A. Omang, H. Lestiana","doi":"10.17794/rgn.2023.3.4","DOIUrl":"https://doi.org/10.17794/rgn.2023.3.4","url":null,"abstract":"A catastrophic Palu earthquake on September 28th, 2018 with Mw 7.5 triggered countless slope failures, generating numerous landslides. This paper presents a practical method for susceptibility assessment of earthquake-induced landslides in the Palu region and the surrounding area. The statistical weight of evidence (WoE) model was used to assess the relationship between landslides induced by seismic motion and its causative factors to determine the susceptibility level and derive an earthquake-induced landslide susceptibility map of this study area. The 1273 landslides were classified into two data series, training data for modelling (70%) and test data for validation (30%). The six selected thematic maps as landslide causative factors are lithology, land use, peak ground acceleration (PGA), and slope (gradient, aspect, elevation). The selection of causative factors considerably influences the frequency of landslides in the area. The result is satisfactory because the AUC value of the chosen model excelled the minimum limit, which is 0.6 (60%). The estimated success rate of the model is 85.7%, which shows that the relevancy of the model is good with the occurrence of landslides. The prediction rate of 84.6% indicates that the applied model is very good at predicting new landslides.","PeriodicalId":44536,"journal":{"name":"Rudarsko-Geolosko-Naftni Zbornik","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68158932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. Maleki, Sajjad Chehreghani, M. Noaparast, M. Mirmohammadi, Minoo Ghanbarzad
In this research work, the leaching behavior of a copper oxide ore sample prepared from the Qaleh-Zari copper mine with a very high grade of 5.4% Cu (malachite and azurite) was investigated to evaluate the effects of significant operating parameters on copper recovery, including sulfuric acid concentration, solid percentage, particle size and agitation speed. Then, response surface methodology (RSM) and central composite design (CCD) were employed to optimize the leaching process and assess interactions between the effective parameters. In order to further analyze the leaching behavior, kinetics of copper dissolution was studied on the basis of the shrinking core models (SCM). The results showed a reduction in the rate of recovery with an increase in the solid percentage and/or particle size. In contrast, any increase in the agitation speed and/or acid concentration was found to improve the recovery. It was remarkable that increasing the sulfuric acid content, beyond a certain level, imposed no significant effect on the recovery. Optimal copper recovery was obtained with a solid percentage, agitation speed, particle size, and sulfuric acid concentration of 25.12%, 586 rpm, 70 μm, and 12.5%, respectively, leading to a recovery of 93.24%. A study on the leaching kinetics indicated that the dissolution rate was controlled by the fluid diffusion from product layer model with 30.71 kJ/mol of activation energy.
{"title":"DISSOLUTION KINETICS OF A COPPER OXIDE ORE SAMPLE AND OPTIMIZING THE EFFECTIVE PARAMETERS, USING RESPONSE SURFACE METHODOLOGY","authors":"H. Maleki, Sajjad Chehreghani, M. Noaparast, M. Mirmohammadi, Minoo Ghanbarzad","doi":"10.17794/rgn.2023.2.5","DOIUrl":"https://doi.org/10.17794/rgn.2023.2.5","url":null,"abstract":"In this research work, the leaching behavior of a copper oxide ore sample prepared from the Qaleh-Zari copper mine with a very high grade of 5.4% Cu (malachite and azurite) was investigated to evaluate the effects of significant operating parameters on copper recovery, including sulfuric acid concentration, solid percentage, particle size and agitation speed. Then, response surface methodology (RSM) and central composite design (CCD) were employed to optimize the leaching process and assess interactions between the effective parameters. In order to further analyze the leaching behavior, kinetics of copper dissolution was studied on the basis of the shrinking core models (SCM). The results showed a reduction in the rate of recovery with an increase in the solid percentage and/or particle size. In contrast, any increase in the agitation speed and/or acid concentration was found to improve the recovery. It was remarkable that increasing the sulfuric acid content, beyond a certain level, imposed no significant effect on the recovery. Optimal copper recovery was obtained with a solid percentage, agitation speed, particle size, and sulfuric acid concentration of 25.12%, 586 rpm, 70 μm, and 12.5%, respectively, leading to a recovery of 93.24%. A study on the leaching kinetics indicated that the dissolution rate was controlled by the fluid diffusion from product layer model with 30.71 kJ/mol of activation energy.","PeriodicalId":44536,"journal":{"name":"Rudarsko-Geolosko-Naftni Zbornik","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68157146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Fall cone liquid limit testing procedure for low plasticity soil mixtures with sand, including the sample preparation procedure and the implementation of Fall cone plastic limit determination suggestions are covered within this research. A Fall cone apparatus was used in order to determine the liquid and plastic limits of soil types, for which the Casagrande cup and thread rolling methods proved inapplicable. Several issues are addressed concerning standardized sample mixture preparation and cup filling procedures for liquid limit testing, as well as the applicability of single measurements per moisture content and the effect of curing time on data gain quality. Both liquid and plastic limit testing results show a solid and expected linear trend of high precision. Liquid limit testing results correlate well with the existing data which suggests the Fall cone method as a unique liquid limit testing method for mixtures of low plasticity clays with sand. Plastic limit determination methods results show a deviation from values obtained with the classical Casagrande’s thread rolling method which could be caused by the bias in the tested soil type or apparatus. Test results are presented numerically and graphically and discussed with a focus on the given method applicability for determining Atterberg limits of low plasticity soil mixtures with sand.
{"title":"DETERMINATION OF THE ATTERBERG LIMITS USING A FALL CONE DEVICE ON LOW PLASTICITY SILTY SANDS","authors":"Davor Marušić, V. Jagodnik","doi":"10.17794/rgn.2023.3.11","DOIUrl":"https://doi.org/10.17794/rgn.2023.3.11","url":null,"abstract":"The Fall cone liquid limit testing procedure for low plasticity soil mixtures with sand, including the sample preparation procedure and the implementation of Fall cone plastic limit determination suggestions are covered within this research. A Fall cone apparatus was used in order to determine the liquid and plastic limits of soil types, for which the Casagrande cup and thread rolling methods proved inapplicable. Several issues are addressed concerning standardized sample mixture preparation and cup filling procedures for liquid limit testing, as well as the applicability of single measurements per moisture content and the effect of curing time on data gain quality. Both liquid and plastic limit testing results show a solid and expected linear trend of high precision. Liquid limit testing results correlate well with the existing data which suggests the Fall cone method as a unique liquid limit testing method for mixtures of low plasticity clays with sand. Plastic limit determination methods results show a deviation from values obtained with the classical Casagrande’s thread rolling method which could be caused by the bias in the tested soil type or apparatus. Test results are presented numerically and graphically and discussed with a focus on the given method applicability for determining Atterberg limits of low plasticity soil mixtures with sand.","PeriodicalId":44536,"journal":{"name":"Rudarsko-Geolosko-Naftni Zbornik","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68158118","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hrvoje Heštera, Mladen Pahernik, Biljana Kovačević Zelić, Maja Maurić Maljković
Unified Soil Classification System (USCS) osnova je brojnih metoda za istraživanje prohodnosti tla za vozila. Budući da podatci o USCS-u nisu uvijek dostupni, koriste se razni drugi izvori i metode za korelaciju i predviđanje USCS grupe tla. U ovome radu opisane su dvije metode korištene u svrhu kartiranja hrvatskog dijela panonskog bazena prema USCS-u do dubine tla od 50 cm. U prvoj metodi ispitana je mogućnost prijenosa 308 uzoraka tla prema sustavu klasifikacije International Soil Science Society (ISSS) u USCS. Rezultati su pokazali da nije moguće izravno transformirati podatke ISSS klasifikacije u USCS. U drugoj metodi korišteno je 414 USCS profila u analizi težišnih faktora u prostornoj analizi s ponderiranjem obrnute udaljenosti. Analizom su obuhvaćeni slojevi dominantnih i asocijativnih jedinica tala Osnovne pedološke karte Hrvatske (BSM), Osnovne geološke karte Hrvatske (GM), dreniranost tla i slivna područja. Dobivene ponderirane težine bile su: BSM 47,12 %, slivno područje 27,12 %, GM 17,67 % i dreniranost tla 8 %. Rezultati su pokazali da je panonski dio Hrvatske prekriven sitnozrnatim tlima, pri čemu je glinom prekriveno gotovo cijelo područje, dok prahovi dominiraju u zapadnim i sjeverozapadnim dijelovima panonskog bazena Hrvatske.
统一土壤分类系统（USCS）基于多种方法来探索土壤对车辆的益处。由于USCS数据并不总是可用的，因此使用了不同的来源和方法来关联和预测USCS土壤组。在这项工作中，描述了两种将克罗地亚板块基底映射到50厘米深的USCS的方法。第一种方法是将308个土壤样本转移到国际土壤科学学会（ISSS）分类系统。在ISSS和USCS的转型过程中。在第二种方法中，使用414个USCS剖面来分析空间分析中的加权因子，并进行反向距离思考。Analizom su obuhvaćeni slojevi dominatnih i asocijativnih jedinica tala Osnovne pedološke karte Hrvatske（BSM）、Osnovne geološke karte Hrvastke（GM）、dreniranot tla i slivna područja。以下权重分别为：BSM 47.12%、小面积27.12%、GM 17.67%和土壤钻探8%。结果表明，克罗地亚的全景部分覆盖着小颗粒，几乎整个地区都覆盖着粘土，而克罗地亚全景池的西部和西北部则以灰尘为主。
{"title":"KARTIRANJE TALA PANONSKOG DIJELA HRVATSKE PREMA UNIFIED SOIL CLASSIFICATION SYSTEM UPOTREBOM MULTINOMNE LOGISTIČKE REGRESIJE I INTERPOLACIJE INVERZIJOM UDALJENOSTI","authors":"Hrvoje Heštera, Mladen Pahernik, Biljana Kovačević Zelić, Maja Maurić Maljković","doi":"10.17794/rgn.2023.3.12","DOIUrl":"https://doi.org/10.17794/rgn.2023.3.12","url":null,"abstract":"Unified Soil Classification System (USCS) osnova je brojnih metoda za istraživanje prohodnosti tla za vozila. Budući da podatci o USCS-u nisu uvijek dostupni, koriste se razni drugi izvori i metode za korelaciju i predviđanje USCS grupe tla. U ovome radu opisane su dvije metode korištene u svrhu kartiranja hrvatskog dijela panonskog bazena prema USCS-u do dubine tla od 50 cm. U prvoj metodi ispitana je mogućnost prijenosa 308 uzoraka tla prema sustavu klasifikacije International Soil Science Society (ISSS) u USCS. Rezultati su pokazali da nije moguće izravno transformirati podatke ISSS klasifikacije u USCS. U drugoj metodi korišteno je 414 USCS profila u analizi težišnih faktora u prostornoj analizi s ponderiranjem obrnute udaljenosti. Analizom su obuhvaćeni slojevi dominantnih i asocijativnih jedinica tala Osnovne pedološke karte Hrvatske (BSM), Osnovne geološke karte Hrvatske (GM), dreniranost tla i slivna područja. Dobivene ponderirane težine bile su: BSM 47,12 %, slivno područje 27,12 %, GM 17,67 % i dreniranost tla 8 %. Rezultati su pokazali da je panonski dio Hrvatske prekriven sitnozrnatim tlima, pri čemu je glinom prekriveno gotovo cijelo područje, dok prahovi dominiraju u zapadnim i sjeverozapadnim dijelovima panonskog bazena Hrvatske.","PeriodicalId":44536,"journal":{"name":"Rudarsko-Geolosko-Naftni Zbornik","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68158300","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
It has been long observed that the Peruvian Central Highway (PE-22) and the LM-116 road are among the roads most affected by mass movements (MM) in Peru, frequently exposed to the occurrence of rockfalls, debris flow and landslides; both roads represent an important connection alternative between Lima with towns, cities and mining centers located in the Central Mountain Range of the Andes. In this research, firstly, a point density analysis was performed using Geographic Information Systems (GIS) considering the road network of all of Peru (composed of 144,499 km) and the inventory of geological hazards (GEOCATMIN) prepared by the Geological, Mining and Metallurgical Institute of Peru INGEMMET (2000-2018). Subsequently, the evaluation of the mass movement susceptibility on the LM-116 road has been carried out using free access data reported by Peruvian institutions (INGEMMET, MTC, MINAM) from which it was possible to elaborate thematic maps, including the most relevant factors in the occurrence of mass movements, like a slope, lithology, geomorphology, land use, drainage density, and the distance from tectonic structures. Finally, for the mass movement susceptibility analysis, three methods have been considered: the Analytic Hierarchical Process (AHP), the Statistical Index (Wi) and the Weights of Evidence (WoE). The results were validated using the area under the curve criteria (AUC). Both bivariate statistical methods (Wi and WoE) presented a prediction rate above 78%, with a higher rate for the WoE method. On the other hand, the semi-quantitative method (AHP) obtained values in the order of 69%. Therefore, it is concluded that the maps elaborated with the statistical methods presented a better approximation concerning the database of geological hazards reported by GEOCATMIN.
{"title":"A COMPARATIVE STUDY OF THE BIVARIATE STATISTICAL METHODS AND THE ANALYTICAL HIERARCHICAL PROCESS FOR THE ASSESSMENT OF MASS MOVEMENT SUSCEPTIBILITY. A CASE STUDY: THE LM-116 ROAD – PERU","authors":"J. Vásquez, M. Estrada","doi":"10.17794/rgn.2023.1.13","DOIUrl":"https://doi.org/10.17794/rgn.2023.1.13","url":null,"abstract":"It has been long observed that the Peruvian Central Highway (PE-22) and the LM-116 road are among the roads most affected by mass movements (MM) in Peru, frequently exposed to the occurrence of rockfalls, debris flow and landslides; both roads represent an important connection alternative between Lima with towns, cities and mining centers located in the Central Mountain Range of the Andes. In this research, firstly, a point density analysis was performed using Geographic Information Systems (GIS) considering the road network of all of Peru (composed of 144,499 km) and the inventory of geological hazards (GEOCATMIN) prepared by the Geological, Mining and Metallurgical Institute of Peru INGEMMET (2000-2018). Subsequently, the evaluation of the mass movement susceptibility on the LM-116 road has been carried out using free access data reported by Peruvian institutions (INGEMMET, MTC, MINAM) from which it was possible to elaborate thematic maps, including the most relevant factors in the occurrence of mass movements, like a slope, lithology, geomorphology, land use, drainage density, and the distance from tectonic structures. Finally, for the mass movement susceptibility analysis, three methods have been considered: the Analytic Hierarchical Process (AHP), the Statistical Index (Wi) and the Weights of Evidence (WoE). The results were validated using the area under the curve criteria (AUC). Both bivariate statistical methods (Wi and WoE) presented a prediction rate above 78%, with a higher rate for the WoE method. On the other hand, the semi-quantitative method (AHP) obtained values in the order of 69%. Therefore, it is concluded that the maps elaborated with the statistical methods presented a better approximation concerning the database of geological hazards reported by GEOCATMIN.","PeriodicalId":44536,"journal":{"name":"Rudarsko-Geolosko-Naftni Zbornik","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68155148","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
H. H. Gharehgheshlagh, Sajjad Chehreghani, Behnam Seyyedi
Grinding aids are materials that are added to cement mixtures to improve the characteristics of the cement or increase the efficiency of the milling systems or both in the clinker grinding (finish grinding) stage. In this study, the effects of four grinding aids (Triisopropanolamine based (TIPA), Triethanolamine based (TEA), Hydroxylamine based (HA), and Calcium nitrate based (CN) grinding aids) in the clinker grinding process were evaluated on the essential characteristics of the produced cement: namely specific surface area (Blaine number), compressive strength of concrete, and the comminution efficiency-retention time (energy saving) at four different dosage levels. In the first step, the grinding time required to reach the Blaine number of the investigated Cement type (S-OPC: Studied Ordinary Portland Cement) was obtained as 69.75 minutes by kinetic grinding tests. Afterward, 17 laboratory-scale grinding tests were performed utilizing S-OPC cement and four grinding aids at four different doses of 0.02%, 0.05%, 0.08% and 0.11 %. The results indicated that the TIPA-0.11 (Triisopropylamine compound at a dosage level of 0.11%), with a Blaine value of 4069 cm2/g, and grinding efficiency of 19%, had the most significant effect on the fineness and comminution efficiency. Furthermore, the concrete samples produced from all the grinding aids were tested for their compressive strength at 2, 7, and 28 days. The results showed that compared to control samples, the highest growth of compressive strength were on day 2 and 7 for TIPA-0.11 samples with values of 37.08% and 32.44%, respectively. Meanwhile, the highest increase of compressive strength was after 28 days for TIPA-0.11 samples with a 22.14% increase.
{"title":"EFFECTS OF VARIOUS GRINDING AIDS DOSAGE ON COMMINUTION EFFICIENCY AND CEMENT CHARACTERISTICS","authors":"H. H. Gharehgheshlagh, Sajjad Chehreghani, Behnam Seyyedi","doi":"10.17794/rgn.2023.1.7","DOIUrl":"https://doi.org/10.17794/rgn.2023.1.7","url":null,"abstract":"Grinding aids are materials that are added to cement mixtures to improve the characteristics of the cement or increase the efficiency of the milling systems or both in the clinker grinding (finish grinding) stage. In this study, the effects of four grinding aids (Triisopropanolamine based (TIPA), Triethanolamine based (TEA), Hydroxylamine based (HA), and Calcium nitrate based (CN) grinding aids) in the clinker grinding process were evaluated on the essential characteristics of the produced cement: namely specific surface area (Blaine number), compressive strength of concrete, and the comminution efficiency-retention time (energy saving) at four different dosage levels. In the first step, the grinding time required to reach the Blaine number of the investigated Cement type (S-OPC: Studied Ordinary Portland Cement) was obtained as 69.75 minutes by kinetic grinding tests. Afterward, 17 laboratory-scale grinding tests were performed utilizing S-OPC cement and four grinding aids at four different doses of 0.02%, 0.05%, 0.08% and 0.11 %. The results indicated that the TIPA-0.11 (Triisopropylamine compound at a dosage level of 0.11%), with a Blaine value of 4069 cm2/g, and grinding efficiency of 19%, had the most significant effect on the fineness and comminution efficiency. Furthermore, the concrete samples produced from all the grinding aids were tested for their compressive strength at 2, 7, and 28 days. The results showed that compared to control samples, the highest growth of compressive strength were on day 2 and 7 for TIPA-0.11 samples with values of 37.08% and 32.44%, respectively. Meanwhile, the highest increase of compressive strength was after 28 days for TIPA-0.11 samples with a 22.14% increase.","PeriodicalId":44536,"journal":{"name":"Rudarsko-Geolosko-Naftni Zbornik","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"68156146","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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