The paper presents a GIS-based method for selecting an optimum location of wind farm on the case study of the Prusice commune in Lower Silesia (SW Poland). The adopted multi-criteria approach utilises the Analytic Hierarchy Process (AHP) and Weighted Linear Combination (WLC) methods to determine weights of sitting criteria (factors and constraints), and to develop a composite suitability map from single-factor maps representing these criteria. The adopted sitting criteria have been identified based on literature review, and include: technical, spatial, social and environmental aspects of wind farm devel- opment, and also address specific geographical constrains of this part of Poland. The most suitable and suitable areas have been presented on a wind farm suitability map for the com- mune. The area size of the largest suitable spots (14) varies from 10 to 64 ha. The proposed method and the results of this work can be used to support sustainable spatial policy and spatial development on all levels of public administration related to renewable resources use.
{"title":"GIS-BASED METHOD FOR WIND FARM LOCATION MULTI-CRITERIA ANALYSIS","authors":"M. Szurek, J. Blachowski, A. Nowacka","doi":"10.5277/MS142106","DOIUrl":"https://doi.org/10.5277/MS142106","url":null,"abstract":"The paper presents a GIS-based method for selecting an optimum location of wind farm on the case study of the Prusice commune in Lower Silesia (SW Poland). The adopted multi-criteria approach utilises the Analytic Hierarchy Process (AHP) and Weighted Linear Combination (WLC) methods to determine weights of sitting criteria (factors and constraints), and to develop a composite suitability map from single-factor maps representing these criteria. The adopted sitting criteria have been identified based on literature review, and include: technical, spatial, social and environmental aspects of wind farm devel- opment, and also address specific geographical constrains of this part of Poland. The most suitable and suitable areas have been presented on a wind farm suitability map for the com- mune. The area size of the largest suitable spots (14) varies from 10 to 64 ha. The proposed method and the results of this work can be used to support sustainable spatial policy and spatial development on all levels of public administration related to renewable resources use.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":"1 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89708963","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}
W artykule zamieszczono na wstępie krótki opis stosowanych w górnictwie urządzeń napinających taśmę, a następnie przedstawiono zasadę działania proporcjonalnego nadążnego układu napinania taśmy. Problemy z układem tłumienia występujące w eksploatacji tego typu urządzeń napinających skłoniły autorów do budowy stanowiska badawczego i przeprowadzenia serii testów mających na celu zbadanie wpływu parametrów tłumienia amortyzatora dynamicznego i jego lokalizacji na wartość siły tłumiącej i siły w układzie zlinowania oraz na zmianę energii kinetycznej wózków napinających. Zamieszczone wyniki badań potwierdziły skuteczność działania amortyzatora, przy zachowaniu jego wszystkich cech użytkowych.
{"title":"Badania laboratoryjne układu tłumienia nadążnego urządzenia napinającego","authors":"P. Kasza, P. Kulinowski","doi":"10.5277/MS142104S","DOIUrl":"https://doi.org/10.5277/MS142104S","url":null,"abstract":"W artykule zamieszczono na wstępie krótki opis stosowanych w górnictwie urządzeń napinających taśmę, a następnie przedstawiono zasadę działania proporcjonalnego nadążnego układu napinania taśmy. Problemy z układem tłumienia występujące w eksploatacji tego typu urządzeń napinających skłoniły autorów do budowy stanowiska badawczego i przeprowadzenia serii testów mających na celu zbadanie wpływu parametrów tłumienia amortyzatora dynamicznego i jego lokalizacji na wartość siły tłumiącej i siły w układzie zlinowania oraz na zmianę energii kinetycznej wózków napinających. Zamieszczone wyniki badań potwierdziły skuteczność działania amortyzatora, przy zachowaniu jego wszystkich cech użytkowych.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":"22 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73152739","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}
M. Zombroń, W. Mironowicz, M. Bartlewska-Urban, J. Smolinska
Atypical but real practical problems relating to the dynamics of block-type foundations for machines are considered using the deterministic approach and assuming that the determined parameters are random variables. A foundation model in the form of an undeformable solid on which another undeformable solid modelling a machine is mounted via viscoelastic constraints was adopted. The dynamic load was defined by a harmonically varying signal and by a series of short duration signals. The vibration of the system was investigated for the case when stratified ground (groundwater) occurred within the side backfill was present. Calculation results illustrating the theoretical analyses are presented.
{"title":"Selected problems relating to the dynamics of block-type foundations for machines","authors":"M. Zombroń, W. Mironowicz, M. Bartlewska-Urban, J. Smolinska","doi":"10.5277/MS142108","DOIUrl":"https://doi.org/10.5277/MS142108","url":null,"abstract":"Atypical but real practical problems relating to the dynamics of block-type foundations for machines are considered using the deterministic approach and assuming that the determined parameters are random variables. A foundation model in the form of an undeformable solid on which another undeformable solid modelling a machine is mounted via viscoelastic constraints was adopted. The dynamic load was defined by a harmonically varying signal and by a series of short duration signals. The vibration of the system was investigated for the case when stratified ground (groundwater) occurred within the side backfill was present. Calculation results illustrating the theoretical analyses are presented.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":"335 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78587956","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. Zimroz, R. Błażej, P. Stefaniak, A. Wyłomańska, Jakub Obuchowski, M. Hardygóra
{"title":"Inteligentny system diagnostyki taśm przenośnikowych – koncepcja","authors":"R. Zimroz, R. Błażej, P. Stefaniak, A. Wyłomańska, Jakub Obuchowski, M. Hardygóra","doi":"10.5277/MS142109S","DOIUrl":"https://doi.org/10.5277/MS142109S","url":null,"abstract":"","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":"26 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81072420","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 paper aroused in answer to discussion in Mining Magazine (MM) September 2011 and July/August 2013. The paper shows that discussion given in the MM issue July/August 2013 does not fulfill expectations expressed in MM issue 2011. The presented paper is the review on maintenance that is based on condition monitoring as tool for detection of faults and failure prevention. Fault and failure are regarded as inevitable during the machine operation as the process of wear and the process of degra- dation. The question is, if one can influence the wear and degradation process, using condition monito- ring. The paper will present technology (in reference to cited papers) which demonstrates that the use of the proper method can influence the wear and machine degradation process, using proper condition moni- toring techniques and knowing scenarios of wear and degradation process, the maintenance can be ratio- nalized. The presented paper shows possible improvements which are needed to fulfill expectations expressed in MM September 2011 and they are not taken into consideration in MM July/August 3013. These improvements can be fulfilling on the bases of object and operation supported maintenance.
{"title":"OBJECT AND OPERATION SUPPORTED MAINTENANCE FOR MINING EQUIPMENT","authors":"W. Bartelmus","doi":"10.5277/MS142101","DOIUrl":"https://doi.org/10.5277/MS142101","url":null,"abstract":"The paper aroused in answer to discussion in Mining Magazine (MM) September 2011 and July/August 2013. The paper shows that discussion given in the MM issue July/August 2013 does not fulfill expectations expressed in MM issue 2011. The presented paper is the review on maintenance that is based on condition monitoring as tool for detection of faults and failure prevention. Fault and failure are regarded as inevitable during the machine operation as the process of wear and the process of degra- dation. The question is, if one can influence the wear and degradation process, using condition monito- ring. The paper will present technology (in reference to cited papers) which demonstrates that the use of the proper method can influence the wear and machine degradation process, using proper condition moni- toring techniques and knowing scenarios of wear and degradation process, the maintenance can be ratio- nalized. The presented paper shows possible improvements which are needed to fulfill expectations expressed in MM September 2011 and they are not taken into consideration in MM July/August 3013. These improvements can be fulfilling on the bases of object and operation supported maintenance.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":"14 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79743865","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}
This paper describes the measurement of contact angle of the natural surface of copper-bearing shales immersed in solutions of selected reagents of various concentrations using captive bubble method. It demonstrates that the copper-bearing shales coming from Legnicko-Glogwski Copper Region develop natural hydrophobic properties in surfactant (frother) solutions and its hydrophobicity decreases from 82⁰ contact angle in distilled water, 78⁰ in C4E1 solutions, 76⁰ in C4E2 solutions, to 75⁰ in dodecylphenol solutions. These data show that the addition of frother causes a decrease of shale hydrophobicity but it can reduce stability of the thin film between the grain and air bubble. It means that flotation of copper- bearing shales in the presence of frother will only be possible provided specific concentrations.
{"title":"MEASUREMENT OF CONTACT ANGLE OF COPPER- BEARING SHALES USING THE CAPTIVE BUBBLE METHOD","authors":"Danuta Szyszka","doi":"10.5277/MS142107","DOIUrl":"https://doi.org/10.5277/MS142107","url":null,"abstract":"This paper describes the measurement of contact angle of the natural surface of copper-bearing shales immersed in solutions of selected reagents of various concentrations using captive bubble method. It demonstrates that the copper-bearing shales coming from Legnicko-Glogwski Copper Region develop natural hydrophobic properties in surfactant (frother) solutions and its hydrophobicity decreases from 82⁰ contact angle in distilled water, 78⁰ in C4E1 solutions, 76⁰ in C4E2 solutions, to 75⁰ in dodecylphenol solutions. These data show that the addition of frother causes a decrease of shale hydrophobicity but it can reduce stability of the thin film between the grain and air bubble. It means that flotation of copper- bearing shales in the presence of frother will only be possible provided specific concentrations.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":"47 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79394938","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}
In this paper, zeta potential as a function of pH of copper-bearing shale, which is mined in Poland by KGHM, was investigated. The measurements were conducted in water and aqueous solutions of selected flotation frothers. It was established that for investigated copper-bearing shale, after dispersion in water, the isoelectric point (IEP) occurs at pH=3.5. Addition of frothers decreased the IEP on the pH scale and the IEP for butanol was 1.93, for MIBC 2.90 and for eicosaethylene glycol hexadecyl ether (C16E20) 2.76. In the case of introducing frothers changed, the zeta potential becomes less negative. An empirical equation, having two adjustable parameters, was used in the paper to approximate the course of the zeta potential-pH curve. The equation showed a very good approximation of the zeta potential of the investigated shale either in water or frother aqueous solutions.
{"title":"ZETA POTENTIAL OF POLISH COPPER-BEARING SHALE IN THE ABSENCE AND PRESENCE OF FLOTATION FROTHERS","authors":"Mengsu Peng, T. Ratajczak, J. Drzymała","doi":"10.5277/MS142105","DOIUrl":"https://doi.org/10.5277/MS142105","url":null,"abstract":"In this paper, zeta potential as a function of pH of copper-bearing shale, which is mined in Poland by KGHM, was investigated. The measurements were conducted in water and aqueous solutions of selected flotation frothers. It was established that for investigated copper-bearing shale, after dispersion in water, the isoelectric point (IEP) occurs at pH=3.5. Addition of frothers decreased the IEP on the pH scale and the IEP for butanol was 1.93, for MIBC 2.90 and for eicosaethylene glycol hexadecyl ether (C16E20) 2.76. In the case of introducing frothers changed, the zeta potential becomes less negative. An empirical equation, having two adjustable parameters, was used in the paper to approximate the course of the zeta potential-pH curve. The equation showed a very good approximation of the zeta potential of the investigated shale either in water or frother aqueous solutions.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":"44 21 1","pages":"57-63"},"PeriodicalIF":1.3,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89616231","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}
A. Maranda, B. Golabek, B. Korytkowski, J. Suszka, P. Rink
In the current paper, measurement results of the detonation parameters for model emulsion explosives are presented, one of the matrices constituting a base for Hydromite – 100 and 70; the work additionally details the results of the rock blastings, carried out by means of the above mentioned materials. The blastings were executed in the following opencast mines: Kamienna Góra, Kopalnia Granodiorytu Łazany II, Łagów V and Warta Cement Plant. The goal of the proceedings was to optimize the blast grid for specific plants.
{"title":"Optimization of the rock blastings in opencast mines using hydromite emulsion explosives","authors":"A. Maranda, B. Golabek, B. Korytkowski, J. Suszka, P. Rink","doi":"10.5277/MS142103","DOIUrl":"https://doi.org/10.5277/MS142103","url":null,"abstract":"In the current paper, measurement results of the detonation parameters for model emulsion explosives are presented, one of the matrices constituting a base for Hydromite – 100 and 70; the work additionally details the results of the rock blastings, carried out by means of the above mentioned materials. The blastings were executed in the following opencast mines: Kamienna Góra, Kopalnia Granodiorytu Łazany II, Łagów V and Warta Cement Plant. The goal of the proceedings was to optimize the blast grid for specific plants.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":"114 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82289443","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. Błażej, L. Jurdziak, M. Hardygóra, R. Zimroz, C. Bujak, R. Salata, A. Domanski, Ł. Kurp
{"title":"Diagnostyka taśm przenośnikowych z linkami stalowymi – system HRDS i jego wdrożenie","authors":"R. Błażej, L. Jurdziak, M. Hardygóra, R. Zimroz, C. Bujak, R. Salata, A. Domanski, Ł. Kurp","doi":"10.5277/MS152102S","DOIUrl":"https://doi.org/10.5277/MS152102S","url":null,"abstract":"","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":"49 3 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90919902","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}
Grzegorz Żak, Jakub Obuchowski, A. Wyłomańska, R. Zimroz
In this paper a new 2D representation for local damage detection is presented. It is based on a vibration time series analysis. A raw vibration signal is decomposed via short-time Fourier transform and new time series for each frequency bin are differentiated to decorrelate them. For each time series, auto- correlation function is calculated. In the next step ACF maps are constructed. For healthy bearing ACF map should not have visible horizontal lines indicating damage. The method is illustrated by analysis of real data containing signals from damaged bearing and healthy for comparison.
{"title":"NOVEL 2D REPRESENTATION OF VIBRATION FOR LOCAL DAMAGE DETECTION","authors":"Grzegorz Żak, Jakub Obuchowski, A. Wyłomańska, R. Zimroz","doi":"10.5277/MS142109","DOIUrl":"https://doi.org/10.5277/MS142109","url":null,"abstract":"In this paper a new 2D representation for local damage detection is presented. It is based on a vibration time series analysis. A raw vibration signal is decomposed via short-time Fourier transform and new time series for each frequency bin are differentiated to decorrelate them. For each time series, auto- correlation function is calculated. In the next step ACF maps are constructed. For healthy bearing ACF map should not have visible horizontal lines indicating damage. The method is illustrated by analysis of real data containing signals from damaged bearing and healthy for comparison.","PeriodicalId":43629,"journal":{"name":"Mining Science","volume":"78 1","pages":""},"PeriodicalIF":1.3,"publicationDate":"2014-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83640448","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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