Pub Date : 2021-04-26DOI: 10.3997/2214-4609.202152090
L. Fedorova, M. Fedorov
Summary On most rivers of Russia, during opening, ice jams are formed annually, which reduce the throughput of the channel, accompanied by a rapid increase in water level rises, leading to dangerous floods. To predict the formation of ice jams, information is needed on the thickness of the ice and the relief of the channel, on which the process of moving ice plates along the river during the spring flood depends. At present, the GPR method allows obtaining information about the thickness of the ice, the structure of the ice cover, the morphometry of the channel and the thickness of bottom sediments. For the study of the ice situation on the Lena River in the alignment of the Tabaga hydrological station, the method of complex GPR studies of the river channel in the summer and the ice cover of the river at the end of freeze up was applied. As a result, a cross-sectional profile of the river channel was obtained, in which the ice cover was in contact with the sandy sediment. This contact of ice with sediment can be a potential obstacle to the advancement of spring floods or a source of spring ice jam formation.
{"title":"GPR Assessment of The Channel Capacity on Congestion Sections of Rivers in The Pre-Spring Period","authors":"L. Fedorova, M. Fedorov","doi":"10.3997/2214-4609.202152090","DOIUrl":"https://doi.org/10.3997/2214-4609.202152090","url":null,"abstract":"Summary On most rivers of Russia, during opening, ice jams are formed annually, which reduce the throughput of the channel, accompanied by a rapid increase in water level rises, leading to dangerous floods. To predict the formation of ice jams, information is needed on the thickness of the ice and the relief of the channel, on which the process of moving ice plates along the river during the spring flood depends. At present, the GPR method allows obtaining information about the thickness of the ice, the structure of the ice cover, the morphometry of the channel and the thickness of bottom sediments. For the study of the ice situation on the Lena River in the alignment of the Tabaga hydrological station, the method of complex GPR studies of the river channel in the summer and the ice cover of the river at the end of freeze up was applied. As a result, a cross-sectional profile of the river channel was obtained, in which the ice cover was in contact with the sandy sediment. This contact of ice with sediment can be a potential obstacle to the advancement of spring floods or a source of spring ice jam formation.","PeriodicalId":383927,"journal":{"name":"Engineering and Mining Geophysics 2021","volume":"92 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113969310","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}
Pub Date : 2021-04-26DOI: 10.3997/2214-4609.202152017
S. Vakulenko, S. Buryak, A. Shuvalov, A. Alekhin
Summary At present, when carrying out offshore seismic operations using the HR/VHR/UHR (high-resolution, very-high-resolution and ultra-high-resolution) techniques, various types of sources of elastic waves are used, such as electric sparker sources (“sparkers”), electrodynamic sources (“boomers”) and small volume air guns. The signature of these sources differs significantly from each other and depends on the parameters of their operation in each case. In addition, the streamer towing depth affects the resulting waveform. Typically, such a signature includes a primary source pulse, ghost waves reflected from the water-air surface from the source and from the receiver, secondary bubble pulsations, and possibly other oscillations associated with the characteristics of the source. The resulting complex signature, if it cannot be suppressed by processing, significantly reduces the resolution of the seismic images. Even now, during g high-resolution seismic data processing, it is usually not possible to completely effectively suppress the signature, which leads to the loss of the potential advantages of high-resolution seismic surveys and a decrease the quality of the resulting images. In this article we will go through some examples of data acquired with different types of sources and discuss approaches to suppressing noise waves contained in the resulting signature.
{"title":"Processing of High-Resolution Marine Seismic Data - Suppression of The Signature of The Receiving-Emitting System","authors":"S. Vakulenko, S. Buryak, A. Shuvalov, A. Alekhin","doi":"10.3997/2214-4609.202152017","DOIUrl":"https://doi.org/10.3997/2214-4609.202152017","url":null,"abstract":"Summary At present, when carrying out offshore seismic operations using the HR/VHR/UHR (high-resolution, very-high-resolution and ultra-high-resolution) techniques, various types of sources of elastic waves are used, such as electric sparker sources (“sparkers”), electrodynamic sources (“boomers”) and small volume air guns. The signature of these sources differs significantly from each other and depends on the parameters of their operation in each case. In addition, the streamer towing depth affects the resulting waveform. Typically, such a signature includes a primary source pulse, ghost waves reflected from the water-air surface from the source and from the receiver, secondary bubble pulsations, and possibly other oscillations associated with the characteristics of the source. The resulting complex signature, if it cannot be suppressed by processing, significantly reduces the resolution of the seismic images. Even now, during g high-resolution seismic data processing, it is usually not possible to completely effectively suppress the signature, which leads to the loss of the potential advantages of high-resolution seismic surveys and a decrease the quality of the resulting images. In this article we will go through some examples of data acquired with different types of sources and discuss approaches to suppressing noise waves contained in the resulting signature.","PeriodicalId":383927,"journal":{"name":"Engineering and Mining Geophysics 2021","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130222751","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}
Pub Date : 2021-04-26DOI: 10.3997/2214-4609.202152133
Z. Zamotina, A. Starovoytov, M. Tokarev, Y. Terekhina, A. Roslyakov, A. A. Kolubakin
Summary The paper is dedicated to the analysis of 2D high, very high, ultrahigh resolution seismic and multibeam echo-sounder surveys data. Near-surface section (NSS) geological features were studied based on acquired data analysis on the example of three separated regions of Vostochno-Prinovozemelsky area. The main goal was clarification of NSS and geological hazards identification inside studied area. Gas-saturated sediments, paleovalleys and faults were distinguished in each region. Faults genesis and morphological traits issues, definition of deformation nature of NSS and geological hazards identification at the bottom and in near-bottom sediments were studied. Similarities and differences in studied section structure were found. In the first two regions Touronian-Santonian seismic sequence complicated by series of faults formed due to clay dehydration was defined. In the second region deformations inside Oligocene-Miocene seismic sequence were found. They were likely formed by glacial activity. Moreover, there were paleovalleys that had different nature compared to the one that depressions in the third region had. In general, glacial sediments wide spread was defined in the first two regions, which was unnatural for the third region. That means that Barentsevo-Kara glacial boundary, reviewed in the work ( Svendsen et al., 2004 ), is located between the second and the third regions.
本文致力于二维高、超高、超高分辨率地震和多波束回声测深数据的分析。以vostochno - priovozemelsky地区3个分离区域为例，对其近地表剖面地质特征进行了研究。主要目的是澄清研究区内的国家安全状况和地质灾害识别。各区均划分出含气沉积物、古谷和断裂。研究了断裂成因及形态特征问题、NSS变形性质界定问题、海底及近海底沉积物地质灾害识别问题。所研究的截面结构有异同。在前两个地区，确定了图尔纪-三东纪地震序列，其中粘土脱水形成了一系列复杂的断层。在第二个区域发现渐新世-中新世地震序列内的变形。它们很可能是由冰川活动形成的。此外，与第三区坳陷相比，古谷具有不同的性质。总的来说，前两个区域确定了冰川沉积物的广泛分布，而第三个区域则不自然。这意味着在工作中(Svendsen et al.， 2004)审查的Barentsevo-Kara冰川边界位于第二和第三区域之间。
{"title":"Geological Features of The Near-Surface in Vostochno-Prinovozemelsky Area in The Kara Sea","authors":"Z. Zamotina, A. Starovoytov, M. Tokarev, Y. Terekhina, A. Roslyakov, A. A. Kolubakin","doi":"10.3997/2214-4609.202152133","DOIUrl":"https://doi.org/10.3997/2214-4609.202152133","url":null,"abstract":"Summary The paper is dedicated to the analysis of 2D high, very high, ultrahigh resolution seismic and multibeam echo-sounder surveys data. Near-surface section (NSS) geological features were studied based on acquired data analysis on the example of three separated regions of Vostochno-Prinovozemelsky area. The main goal was clarification of NSS and geological hazards identification inside studied area. Gas-saturated sediments, paleovalleys and faults were distinguished in each region. Faults genesis and morphological traits issues, definition of deformation nature of NSS and geological hazards identification at the bottom and in near-bottom sediments were studied. Similarities and differences in studied section structure were found. In the first two regions Touronian-Santonian seismic sequence complicated by series of faults formed due to clay dehydration was defined. In the second region deformations inside Oligocene-Miocene seismic sequence were found. They were likely formed by glacial activity. Moreover, there were paleovalleys that had different nature compared to the one that depressions in the third region had. In general, glacial sediments wide spread was defined in the first two regions, which was unnatural for the third region. That means that Barentsevo-Kara glacial boundary, reviewed in the work ( Svendsen et al., 2004 ), is located between the second and the third regions.","PeriodicalId":383927,"journal":{"name":"Engineering and Mining Geophysics 2021","volume":"159 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124271997","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}
Pub Date : 2021-04-26DOI: 10.3997/2214-4609.202152139
V.V. Mershchii, A.S. Kostyukewich, V. Ignatiev, M. Aleshkin
Summary In this paper, we discussed some examples of full-wave seismic modeling application in geophysical engineering studies. The effectiveness of the MASW method for S-wave velocity estimation is tested on the basis of modeling. The effectiveness of full-wave modelling in investigating the integrity of the foundation wall beneath a high-altitude dam is also considered. Finally is discussed the application of full-wave modeling to determine the seismic effect before and after water injection into the aquifer. As a result of reviewing examples of the application of full-wave modeling, conclusions are drawn about the effectiveness of seismic modeling in solving engineering problems.
{"title":"Application of Full-Wave Seismic Modeling at Engineering Researches","authors":"V.V. Mershchii, A.S. Kostyukewich, V. Ignatiev, M. Aleshkin","doi":"10.3997/2214-4609.202152139","DOIUrl":"https://doi.org/10.3997/2214-4609.202152139","url":null,"abstract":"Summary In this paper, we discussed some examples of full-wave seismic modeling application in geophysical engineering studies. The effectiveness of the MASW method for S-wave velocity estimation is tested on the basis of modeling. The effectiveness of full-wave modelling in investigating the integrity of the foundation wall beneath a high-altitude dam is also considered. Finally is discussed the application of full-wave modeling to determine the seismic effect before and after water injection into the aquifer. As a result of reviewing examples of the application of full-wave modeling, conclusions are drawn about the effectiveness of seismic modeling in solving engineering problems.","PeriodicalId":383927,"journal":{"name":"Engineering and Mining Geophysics 2021","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127107494","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}
Pub Date : 2021-04-26DOI: 10.3997/2214-4609.202152018
A. Shepelev, F. Zhilin
Summary Magnetic investigate in offshore engineering survey are performed in order to search for local magnetic anomalies which can be potentially dangerous during construction of oil and gas facilities site. Proposed technology includes using of magnetic base station in order to obtain high accuracy of observations of differential hydromagnetic surveys. Comparison of processing results of magnetometric field data using magnetic base station and only gradiometer are shown. The work performed in order to make it possible to achieve low values of the root-mean-square error of hydromagnetic survey. Guidelines were developed for changing the methodology for carrying out this type of work
{"title":"Comparison of Processing Results of Magnetometric Data Using Magnetic Base Station and Gradiometer in Offshore Engineering Survey","authors":"A. Shepelev, F. Zhilin","doi":"10.3997/2214-4609.202152018","DOIUrl":"https://doi.org/10.3997/2214-4609.202152018","url":null,"abstract":"Summary Magnetic investigate in offshore engineering survey are performed in order to search for local magnetic anomalies which can be potentially dangerous during construction of oil and gas facilities site. Proposed technology includes using of magnetic base station in order to obtain high accuracy of observations of differential hydromagnetic surveys. Comparison of processing results of magnetometric field data using magnetic base station and only gradiometer are shown. The work performed in order to make it possible to achieve low values of the root-mean-square error of hydromagnetic survey. Guidelines were developed for changing the methodology for carrying out this type of work","PeriodicalId":383927,"journal":{"name":"Engineering and Mining Geophysics 2021","volume":"121 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131126811","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}
Pub Date : 2021-04-26DOI: 10.3997/2214-4609.202152201
M. Solovyeva, Y. Terekhina, O. A. Khlebnikova, M. Tokarev, S. Gorbachev, T. V. Nurmukhamedov, O. M. Myatchin
Summary Currently, Oil&Gas industry interests are focused on exploration for new and development of already known deposits within the vast Arctic shelf. The complexity and high cost of offshore surveys in the Arctic region require the application of all existing data with maximum efficiency. Due to the relevance of standard 2D/3D seismic data inclusion for solving engineering and geological problems is increasing. The purpose of this work was methodology development for the integrated 2D/3D seismic data processing and interpretation for seabed, sub-bottom, near-surface, shallow and deep geohazards detection and identification. The shallow water depth in this part of the Pechora Sea was taken into account. The results of detailed site survey were embedded in the interpretation sequence. This technology is relevant at the stage preceding the site survey planning, in order to assess the geological conditions and select optimal area and scope of work.
{"title":"Approach to Geohazard Assessment Based on 2D/3D Seismic Data on The Pechora Sea Shelf","authors":"M. Solovyeva, Y. Terekhina, O. A. Khlebnikova, M. Tokarev, S. Gorbachev, T. V. Nurmukhamedov, O. M. Myatchin","doi":"10.3997/2214-4609.202152201","DOIUrl":"https://doi.org/10.3997/2214-4609.202152201","url":null,"abstract":"Summary Currently, Oil&Gas industry interests are focused on exploration for new and development of already known deposits within the vast Arctic shelf. The complexity and high cost of offshore surveys in the Arctic region require the application of all existing data with maximum efficiency. Due to the relevance of standard 2D/3D seismic data inclusion for solving engineering and geological problems is increasing. The purpose of this work was methodology development for the integrated 2D/3D seismic data processing and interpretation for seabed, sub-bottom, near-surface, shallow and deep geohazards detection and identification. The shallow water depth in this part of the Pechora Sea was taken into account. The results of detailed site survey were embedded in the interpretation sequence. This technology is relevant at the stage preceding the site survey planning, in order to assess the geological conditions and select optimal area and scope of work.","PeriodicalId":383927,"journal":{"name":"Engineering and Mining Geophysics 2021","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127969790","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}
Pub Date : 2021-04-26DOI: 10.3997/2214-4609.202152190
A. Roslyakov, M. Tokarev, Y. Terekhina, A. Pirogova, N. Rybin
Summary Mitigation of drilling risks associated with geological hazards is a priority task of the site survey offshore investigations. One of the most challenging regions for offshore exploration in terms of near-surface geological hazards is the western Artic shelf. In this region, the near-surface is complicated by presence of subaqueous relict permafrost, intrapermafrost and subpermafrost gas caps, pingo-like structures and various cryogenic deformations. The paper presents our experience of mapping and characterization of the shallow offshore geohazards (including permafrost) using 3D seismic data acquired in different frequency ranges in the Russian Arctic.
{"title":"Application of 3D Seismic Data for Identification and Mapping of Geological Hazards on The Shelf of The Kara Sea","authors":"A. Roslyakov, M. Tokarev, Y. Terekhina, A. Pirogova, N. Rybin","doi":"10.3997/2214-4609.202152190","DOIUrl":"https://doi.org/10.3997/2214-4609.202152190","url":null,"abstract":"Summary Mitigation of drilling risks associated with geological hazards is a priority task of the site survey offshore investigations. One of the most challenging regions for offshore exploration in terms of near-surface geological hazards is the western Artic shelf. In this region, the near-surface is complicated by presence of subaqueous relict permafrost, intrapermafrost and subpermafrost gas caps, pingo-like structures and various cryogenic deformations. The paper presents our experience of mapping and characterization of the shallow offshore geohazards (including permafrost) using 3D seismic data acquired in different frequency ranges in the Russian Arctic.","PeriodicalId":383927,"journal":{"name":"Engineering and Mining Geophysics 2021","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127467127","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}
Pub Date : 2021-04-26DOI: 10.3997/2214-4609.202152022
R.A. Shuvalova, S. Burlutsky, V. Glazunov, S. Zhdanov
Summary Landslides are one of the most dangerous geological processes, they make a threat to all engineering structures. The placement of any structure within the landslide leads to its activation. To design an engineering structures on the landslide slopes, the project’s designers are using the results of a complex engineering surveys, which are necessary for calculating the stability of soil masses, as well as assessing the risks of the development of landslide processes during the construction and operation of the engineering structures. Correct calculation of the landslide slopes stability requires a detailed study of structural features, as well as the research of soil properties within the landslide massif. Although the traditional methods used in engineering and geological surveys are accurate and constantly are being improved, they have one significant drawback - these methods are based on one-dimensional interpretation of drilling data and field methods for studying soils, which does not allow engineering and geological researches of heterogeneous landslide structures with the required detail. Moreover, steep landslide slopes make it difficult to conduct drilling operations, this creates additional difficulties in studying the structural features and identifying weakened zones in the landslide massif. In contrast to 1D methods of researching the slope by drilling wells and field methods of studying the strength properties of soils, modern 2D geophysical technologies allow getting a continuous section of a landslide slope showing the main structural elements of the landslide massif and localising zones of weakened rocks. In order to assess the significance of additional information about the structure of landslides, extracted using geophysical methods, for the value of slope stability, we performed calculations of the stability of the studied landslide slope both on the basis of engineering and geological survey data and taking into account additional geophysical information.
{"title":"Landslide Slope Stability Estimation by The Geotechnical and Geophysical Data","authors":"R.A. Shuvalova, S. Burlutsky, V. Glazunov, S. Zhdanov","doi":"10.3997/2214-4609.202152022","DOIUrl":"https://doi.org/10.3997/2214-4609.202152022","url":null,"abstract":"Summary Landslides are one of the most dangerous geological processes, they make a threat to all engineering structures. The placement of any structure within the landslide leads to its activation. To design an engineering structures on the landslide slopes, the project’s designers are using the results of a complex engineering surveys, which are necessary for calculating the stability of soil masses, as well as assessing the risks of the development of landslide processes during the construction and operation of the engineering structures. Correct calculation of the landslide slopes stability requires a detailed study of structural features, as well as the research of soil properties within the landslide massif. Although the traditional methods used in engineering and geological surveys are accurate and constantly are being improved, they have one significant drawback - these methods are based on one-dimensional interpretation of drilling data and field methods for studying soils, which does not allow engineering and geological researches of heterogeneous landslide structures with the required detail. Moreover, steep landslide slopes make it difficult to conduct drilling operations, this creates additional difficulties in studying the structural features and identifying weakened zones in the landslide massif. In contrast to 1D methods of researching the slope by drilling wells and field methods of studying the strength properties of soils, modern 2D geophysical technologies allow getting a continuous section of a landslide slope showing the main structural elements of the landslide massif and localising zones of weakened rocks. In order to assess the significance of additional information about the structure of landslides, extracted using geophysical methods, for the value of slope stability, we performed calculations of the stability of the studied landslide slope both on the basis of engineering and geological survey data and taking into account additional geophysical information.","PeriodicalId":383927,"journal":{"name":"Engineering and Mining Geophysics 2021","volume":"118 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132112028","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}
Pub Date : 2021-04-26DOI: 10.3997/2214-4609.202152167
A. Loktev, A. Rybalko, D. Korost, M. Tokarev
Summary Engineering-geological survey are regulated by various normative documents and standards. The system consists of regulations, technical rules, standards and even federal laws. Code of Practice SP 47.13330.2016, SP 446.1325800.2019, SP 11-114-2004 are basic documents for the implementation of the survey and regulate scope of them. Currently the system is under update and can include Russian and modernized international guidelines and rules. Additionally, to basic regulations (SP 47.13330.2016, SP 446.1325800.2019) new Code of Practice “Engineering survey for constructions of the continental shelf” is developed and to be issued in 2021. But the Code covers general principals and requirements and not detail. The survey regulations should follow updating of methods and technologies to provide trustful and reliable data and information for offshore constructing. It is good practice to use the best domestic and international experience for proper and effective regulation of soil survey and engineering geophysical investigation in particular. For instance, ISO standards are used and planned to be used to develop normative basement for offshore geological investigation and reconstruction (ISO 19901-8 Marine soil investigations, FDIS 19901-10 Marine geophysical investigations).
{"title":"Normative and Methodological Basement of Offshore Engineering-Geological Survey, Recent Statement","authors":"A. Loktev, A. Rybalko, D. Korost, M. Tokarev","doi":"10.3997/2214-4609.202152167","DOIUrl":"https://doi.org/10.3997/2214-4609.202152167","url":null,"abstract":"Summary Engineering-geological survey are regulated by various normative documents and standards. The system consists of regulations, technical rules, standards and even federal laws. Code of Practice SP 47.13330.2016, SP 446.1325800.2019, SP 11-114-2004 are basic documents for the implementation of the survey and regulate scope of them. Currently the system is under update and can include Russian and modernized international guidelines and rules. Additionally, to basic regulations (SP 47.13330.2016, SP 446.1325800.2019) new Code of Practice “Engineering survey for constructions of the continental shelf” is developed and to be issued in 2021. But the Code covers general principals and requirements and not detail. The survey regulations should follow updating of methods and technologies to provide trustful and reliable data and information for offshore constructing. It is good practice to use the best domestic and international experience for proper and effective regulation of soil survey and engineering geophysical investigation in particular. For instance, ISO standards are used and planned to be used to develop normative basement for offshore geological investigation and reconstruction (ISO 19901-8 Marine soil investigations, FDIS 19901-10 Marine geophysical investigations).","PeriodicalId":383927,"journal":{"name":"Engineering and Mining Geophysics 2021","volume":"89 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128192920","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}
Pub Date : 2021-04-26DOI: 10.3997/2214-4609.202152037
A. Sirazhev, S. Istekova, R. Temirkhanova
Summary The article outlines application of seismic exploration in the field of mining geology in complex geological conditions of Kazakhstan. The justification and characterization of geological and geophysical conditions for experimental 3D seismic surveys implementation for the copper sandstones deposits of the Zhilandinsky group located in the Karaganda region of Central Kazakhstan are presented. The tasks are defined and the methodology of high-resolution 3D seismic survey is developed and tested. Special high-resolution 3D processing and interpretation helped to obtain high-quality seismic materials and to highlight the structural and tectonic structure of study areas, identifying and refining ore-controlling structures, detecting and deep mapping of tectonic faults, volumetric mapping of intrusive bodies. The main keystones during the modeling process based on the results of a comprehensive interpretation of three-dimensional seismic survey together with geological and geophysical data, which will significantly increase the reliability coefficient of forecasting ore deposits, are indicated.
{"title":"Application of 3D Aeismic for Justification and Characterization of Geological and Geophysical Conditions in Mmining Geology","authors":"A. Sirazhev, S. Istekova, R. Temirkhanova","doi":"10.3997/2214-4609.202152037","DOIUrl":"https://doi.org/10.3997/2214-4609.202152037","url":null,"abstract":"Summary The article outlines application of seismic exploration in the field of mining geology in complex geological conditions of Kazakhstan. The justification and characterization of geological and geophysical conditions for experimental 3D seismic surveys implementation for the copper sandstones deposits of the Zhilandinsky group located in the Karaganda region of Central Kazakhstan are presented. The tasks are defined and the methodology of high-resolution 3D seismic survey is developed and tested. Special high-resolution 3D processing and interpretation helped to obtain high-quality seismic materials and to highlight the structural and tectonic structure of study areas, identifying and refining ore-controlling structures, detecting and deep mapping of tectonic faults, volumetric mapping of intrusive bodies. The main keystones during the modeling process based on the results of a comprehensive interpretation of three-dimensional seismic survey together with geological and geophysical data, which will significantly increase the reliability coefficient of forecasting ore deposits, are indicated.","PeriodicalId":383927,"journal":{"name":"Engineering and Mining Geophysics 2021","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127294245","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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