Utah State University
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Grand Valley State University
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United States Department of Agriculture
Bangladesh Marine Academy
Diagnostic Gold Deportment Studies And Leaching Behaviour Of Small-Scale Gold Mining Tailings From Eastern Region, Ghana,
2023
Department of Environmental and Safety Engineering, University of Mines and Technology, Tarkwa, Ghana
Diagnostic Gold Deportment Studies And Leaching Behaviour Of Small-Scale Gold Mining Tailings From Eastern Region, Ghana, Ishmael Quaicoe, Martin Beyuo, Solomon Quaicoe, Nikao A. Lasidzi
Journal of Sustainable Mining
Artisanal and small-scale gold mining (ASGM) sector employs about 80% of the mining workforce but only contributes about 20-30% of Ghana’s gold production. The low gold production is linked to low recoveries associated with the activities because ofinadequate understanding of the chemical, mineralogical and metallurgical characteristics of the ores. This study examined the metallurgical characteristics of typical small-scale gold mining tailings to understand their grinding characteristics, gold deportment and cyanidation behaviour. The gold deportment results showed that 96.1% of the gold in the samples is free milling (can be leached directly with cyanide and recovered through carbon adsorption), whilst the …
Research On Aquifer Water Abundance Evaluation By Borehole Transient Electromagnetic Method Based On Fcnn,
2023
College of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China
Research On Aquifer Water Abundance Evaluation By Borehole Transient Electromagnetic Method Based On Fcnn, Cheng Jiulong, Wang Huijie, Xu Zhongzhong, Huang Qisong, Jiang Guoqing
Coal Geology & Exploration
Predicting the location and water abundance of aquifers by drilling or geophysical methods before tunneling is very important to prevent water disasters in advance for the safety of coal mine production. The use of borehole transient electromagnetic method (BTEM) for advanced detection has obvious advantages. At present, the interpretation method is based on the calculated resistivity to qualitatively analyze rock water abundance, and it is impossible to predict the aquifer water abundance grade. So, the fully convolutional neural network (FCNN) method is proposed to predict the aquifer water abundance grade for BTEM. Firstly, according to the Archie formula, Kozeny-Carman formula, …
Research Status And Development Trend Of Mine Electrical Prospecting,
2023
School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, China
Research Status And Development Trend Of Mine Electrical Prospecting, Yue Jianhua, Yang Haiyan, Ran Huageng
Coal Geology & Exploration
Transparency of hidden geological factors is critical to intelligent and precise coal mining and therefore the prevention and control of major accidents in coal mine. The significant electrical property change can be resulted from several factors, such as the structure of coal and rock mass, the fluid occurrence, etc., providing a basis of physical property for mine electrical prospecting. For more than 30 years, mine electrical prospecting has played a key role to water prevention and control of coal mine in China. Definitely, many symbolized results on theory, technique and application of mine electrical prospecting have been produced through several …
Challenges And Solutions To High-Resolution Data Processing For Seismic Exploration,
2023
College of Geophysics, China University of Petroleum, Beijing 102249, China
Challenges And Solutions To High-Resolution Data Processing For Seismic Exploration, Cao Siyuan, Sun Yaoguang, Chen Siyuan
Coal Geology & Exploration
The seismic resolution has long been limited to the quarter wavelength. To compress the seismic wavelet, the key problems are signal-to-noise ratio (SNR) and resolution in early stages, and high resolution and high fidelity in late stages. Meanwhile, by using well data, many inversion methods of spanning quarter wavelength have been developed. The success of these methods depends on the preservation of seismic wave amplitude, the accuracy of seismic interpretation, and the compatibility between well data and seismic data. Afterward, researchers achieved seismic inversion without well data constraint, and the corresponding resolution reached the level of reflectivity. Meanwhile, the key …
From 1d To 4d: Advances And Thoughts On Coal Seismic Technology,
2023
CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China
From 1d To 4d: Advances And Thoughts On Coal Seismic Technology, Cheng Jianyuan, Zhang Xianxu, Jiang Bici, Wang Pan, Shan Rui
Coal Geology & Exploration
As one of the key technologies for safe and efficient support of coalmine geology, the seismic technology, has gone through one-dimensional (1D), two-dimensional (2D), and three-dimensional (3D), and progressed from resource exploration to mining area exploration, and from structural exploration to lithological exploration. The latest 4D seismic will further leapfrog from static detection to dynamic detection. Based on the concepts of time-space dimensions and the four seismic development stages, we propose three transitional stages from 1.5D (e.g., non-zero offset VSP), 2.5D (e.g., wide line 2D seismic exploration) to 3.5D (e.g., 3D seismic dynamic interpretation), and also present the time-space characteristics …
Domestic And Foreign Progress Of Mine Water Treatment And Resource Utilization,
2023
CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Water Hazard, Xi’an 710077, China
Domestic And Foreign Progress Of Mine Water Treatment And Resource Utilization, Wang Hao, Dong Shuning, Shang Hongbo, Wang Tiantian, Yang Jian, Zhao Chunhu, Zhang Quan, Zhou Zhenfang, Liu Ji, Hou Yue
Coal Geology & Exploration
The treatment and resourceful utilization of mine water is an important thrust to achieve the dual goals of high-quality development of coal industry and ecological civilization construction in mining area. The decision to effectively treat and use mine water as an unconventional water resource will inevitably be made in the future due to the restrictions of a global water resource deficit and ecological environment protection. From the standpoint of the quality features of mine water in various mining sites, the formation mechanism and evaluation techniques of mine water quality were completely detailed here. Meanwhile, there were two stages in the …
Simulation Test On Water-Rock Interaction In Coal Mine Goaf,
2023
School of Resource and Geoscience, China University of Mining and Technology, Xuzhou 221116, China; National Professional Center Laboratory of Basic Research on Mine Water Disaster Prevention and Control Technology, Xuzhou 221116, China
Simulation Test On Water-Rock Interaction In Coal Mine Goaf, Sun Yajun, Zhao Xianming, Xu Zhimin, Guo Juan, Zhang Li, Chen Ge, Chen Tianci, Zhu Lulu, Gao Yating, Chen Weiyang
Coal Geology & Exploration
Water accumulation is widely present in the goaf of coal mine in China. It is of great significance to clarify the water-rock interaction mechanism in the closed and semi-closed goaf environment for water pollution reduction and groundwater resource protection in coal mine area. Taking the water accumulation in the goaf of a coal mine in Inner Mongolia as the research object, we designed a box simulation test to highly restore the goaf environment. X-ray diffractometer (XRD) and X-ray fluorescence spectrometer (XRF) were used to analyze the mineral composition and element composition of the simulated filler of goaf (coal and caving …
Cause, Countermeasures And Solutions Of Water Hazards In Coal Mines In China,
2023
Hebei State Key Laboratory of Mine Disaster Prevention, North China Institute of Science and Technology, Beijing 101601, China
Cause, Countermeasures And Solutions Of Water Hazards In Coal Mines In China, Yin Shangxian, Wang Yuguo, Li Wensheng
Coal Geology & Exploration
In the new century, the coal industry has experienced a decade of rapid development, and the coal output has been stabilized at about 4.5 billion tons. The coal mine safety situation is generally good, with the multiple, frequent and even catastrophic accidents reduced, the major accidents at sometimes developed to be single and occasional, and the extraordinarily serious accidents were controlled effectively. Water hazard of mine is still the main type of coal mine hazards in China, and it is the second largest lethal reason after gas hazard. The analysis shows that the complex mining environment and the insufficient attention …
Characteristics Of Roof Water Hazard Of Coal Seam In Huanglong Coalfield And Key Technologies For Prevention And Control,
2023
CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Hazard, Xi’an 710077, China
Characteristics Of Roof Water Hazard Of Coal Seam In Huanglong Coalfield And Key Technologies For Prevention And Control, Jin Dewu, Li Chaofeng, Liu Yingfeng, Cao Haitao, Ren Dengjun, Wang Hongliang,, Zhang Jinkui, Huang Yang, Yang Guodong, Guo Kang, Fan Min, Liu Chenkai
Coal Geology & Exploration
Huanglong Coalfield in Shaanxi is one of the main coal production bases in China. Coal mining is usually affected by the sandstone water of the thick Luohe Formation on the roof, resulting a significant difficulty in the prevention and control of water hazards. It is therefore of great importance to correctly analyze the characteristics of water inflow from the roof and successfully develop the key technologies for water hazard prevention and control, ensuring the safe production of coal mines. The types of roof water hazard and its main controlling factors were appropriately analyzed by collecting the information on water inflow …
Theoretical Framework And Key Technology Of Advance Regional Control Of Water Inrush In Coal Seam Floor,
2023
CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China; Shaanxi Key Laboratory of Prevention and Control Technology for Coal Mine Water Hazard, Xi’an 710077, China
Theoretical Framework And Key Technology Of Advance Regional Control Of Water Inrush In Coal Seam Floor, Dong Shuning, Liu Qisheng, Wang Hao, Guo Xiaoming, Liu Zhaoxing, Zheng Shitian, Nan Shenghui, Liu Jianlin, Zhao Zhao, Shi Zhiyuan
Coal Geology & Exploration
The shallow coal resources in North China have been nearly depleted so far, whereas deep coal development is challenged by karst water inrush in floor limestone. The conventional underground vertical hole grouting methods are troubled with inappropriate site location, thin drilling-met aquifer, large grouting blind area, and inaccurate target location. For this reason, we propose an advance regional control technology: bedding directional drilling-based grouting. We systematically study the slurry flow from near-horizontal grouting holes, advance grouting modes, grouting parameter control, advance identification of potential water diversion channels, as well as validation and assessment of a grouting treatment. On this basis, …
Technological System Of Water-Conserving Coal Mining,
2023
School of Mines, China University of Mining & Technology, Xuzhou 221116, China
Technological System Of Water-Conserving Coal Mining, Fan Limin, Sun Qiang, Ma Liqiang, Li Tao, Chen Haifu, Jiang Zequan
Coal Geology & Exploration
The research on water-conserving coal mining is the theoretical basis of water resource protection and high-quality development of coal in the ecologically vulnerable mining areas in northwest of our country. In view of the impact and damage on aquifer and ecosystem in ecologically vulnerable mining areas due to intensive mining activities in northwest China, the development process and scientific connotation of water-conserving coal mining was expounded herein. Specifically, the research on water-conserving coal mining has gone through four stages: initiation, formation, development and maturation, and a relatively perfect technological system has been formed at present, which is mainly reflected in …
Experimental Study On Co2-Enhanced Coalbed Methane Production And Its Simultaneous Storage,
2023
School of Resources and Environment, Henan Polytechnic University, Jiaozuo 454003, China; Unconventional Gas Research Institute, Henan Polytechnic University, Jiaozuo 454003, China; School of Earth Resources, China University of Geosciences (Wuhan), Wuhan 430074, China; Collaborative Innovation Center of Coalbed Methane and Shale Gas for Central Plains Economic Region, Jiaozuo 454003, China
Experimental Study On Co2-Enhanced Coalbed Methane Production And Its Simultaneous Storage, Su Xianbo, Huang Jin, Wang Qian, Yu Shiyao
Coal Geology & Exploration
Experimental study on CO2-enhanced coalbed methane production and its simultaneous storage Abstract: For a long time, a lot of work has been done on CO2-enhanced coalbed methane (CO2-ECBM), but the limited industrial trials failed to achieve the expected purpose, which prevented the promotion and application of CBM enhancement technology. In recent years, with the establishment of carbon neutrality routes in different countries, CO2 geological storage has gradually gained attention, and the questions of whether coal reservoirs can be treated as CO2 storage space and whether simultaneous CO2 displacing CH4 and …
Practice And Cognition Of Efficient Cbm Development Under Complex Geological Conditions: A Case Study Of Zhengzhuang Block, Qinshui Basin,
2023
PetroChina Huabei Oilfield Company, Renqiu 062552, China; CNPC Pilot Test Base of CBM Exploration and Development, Renqiu 062552, China
Practice And Cognition Of Efficient Cbm Development Under Complex Geological Conditions: A Case Study Of Zhengzhuang Block, Qinshui Basin, Zhu Qingzhong, Li Zhijun, Li Zongyuan, Wang Sanshuai, Sun Ruixue, Wang Yuting, Xiao Yuhang, Wang Jingyue, Guan Xiaoqu
Coal Geology & Exploration
The geological conditions of various CBM sites in China are complicated and features similarly. With the recent development of exploring CBM towards the medium-deep, ultra-low permeability and structurally complex areas, it is of great significance to develop a set of efficient exploring techniques in complex areas to revitalize a large number of domestic CBM resources. Taking an example of the successful development of Zhengzhuang Block with early low yield and relatively complex geology, it had faced a series of problems, including complex geological conditions with internal fracture, strong heterogeneity, low permeability, lack of corresponding developing technologies for the early stage …
Coal Methane Control And Its Emission Reduction Potential In China,
2023
Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, China University of Mining and Technology, Xuzhou 221008, China; Carbon Neutrality Institute, China University of Mining and Technology, Xuzhou 221008, China; School of Resource and Geoscience, China University of Mining and Technology, Xuzhou 221116, China
Coal Methane Control And Its Emission Reduction Potential In China, Sang Shuxun, Liu Shiqi, Han Sijie, Zheng Sijian, Liu Tong, Zhou Xiaozhi, Wang Ran, Wang Meng
Coal Geology & Exploration
Methane is the most important non-CO2 greenhouse gas, which has attracted more and more attention. Coal methane is the most important methane emission source in China, and China is also the country with the largest amount of coal methane emissions in the world. Therefore, the effective emission control and the efficient development and utilization of coal methane have triple benefits, such as greenhouse gas emission reduction, energy gas development and utilization, and hazardous gas control. Based on the accumulation of systematic investigation and research, the background of coal methane emission control was summarized and conclusion was made for the …
Discussion On Underground System Sealing Methods In In-Situ Pyrolysis Exploitation Of Tar-Rich Coal,
2023
College of Construction Engineering, Jilin University, Changchun 130026, China; National-LocalJoint Engineering Laboratory of In-situ Conversion, Drilling and Exploitation Technology for Oil Shale, Changchun 130026, China; Cooperative Innovation Center of Exploration and Development of Shale Oil and Gas Resources, Ministry of Education & Jilin Province, Changchun 130026, China; Key Lab of Ministry of Natural Resources for Drilling and Exploitation Technology in Complex Conditions, Changchun 130026, China
Discussion On Underground System Sealing Methods In In-Situ Pyrolysis Exploitation Of Tar-Rich Coal, Guo Wei, Liu Zhao, Sun Youhong, Li Qiang, Deng Sunhua
Coal Geology & Exploration
China has abundant tar-rich coal resource, in-situ underground pyrolysis is the main trend of green and efficient development of tar-rich coal resources. However, the underground in-situ pyrolysis of tar-rich coal is still in the stage of technology research and development, and it is necessary to focus on the key technology of tar-rich coal to carry out research . Underground system sealing is one of the key technologies to ensure the efficient use of energy and ecological protection of tar-rich coal in-situ pyrolysis mining, and there is an urgent need to develop and construct underground system closure technology suitable for the …
Tectonic Control On Enrichment And Metallogenesis Of Strategic Metal Elements In Coal Measures,
2023
College of Geoscience and Surveying Engineering, China University of Mining and Technology (Beijing), Beijing 100083, China; State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology (Beijing), Beijing 100083, China
Tectonic Control On Enrichment And Metallogenesis Of Strategic Metal Elements In Coal Measures, Cao Daiyong, Wei Yingchun, Qin Guohong, Ning Shuzheng, Wang Anmin, Zhang Yun, Li Xin, Wei Jinhao, Xu Laixin
Coal Geology & Exploration
The accumulation and distribution of strategic metal minerals in coal measures is the comprehensive result of multi-factors, multi-stages and multi-levels, amongst which the tectonic control is an important factor. The tectonic controlling factors of strategic metal enrichment and mineralization in coal measures include tectonic background, tectonic movement, tectono-magmatic activity, etc., which are reflected in the control of the metal mineral carrier (i.e., coal-bearing rock series), the source of metallogenic materials and the initial aggregation of elements and the later migration and recombination. The entire process of formation and evolution of coal-bearing basins is pervasively influenced by the control of tectonic …
The Mode Of “Five Modernization And Cooperation” In Coal Development Project,
2023
Shaanxi Yanchang Petroleum (Croup) Co., Ltd., Xi’an 710075, China; National & Local United Engineering Research Center of Green Safety Efficient Mining, Huangling 727307, China; School of Safety Science and Engineering, Xi’an University of Science and Technology, Xi’an 710054, China
The Mode Of “Five Modernization And Cooperation” In Coal Development Project, Fan Jingdao, Huang Kejun, Li Chuan, Liu Wei, Song Yue, Yan Zhenguo
Coal Geology & Exploration
Mining engineering plays a crucial role in providing energy and raw materials to human societies. With the integration of new information technology and traditional mining technology, traditional mining engineering management is struggling to keep up with the demands of efficient coal resource development and utilization. In response, this paper proposes a "Five Modernizations and Cooperation" project management method that combines traditional and modern technologies. The Five Modernizations include greenization, intellectualization, integration, professionalization, and refinement. This method emphasizes multi-objective, collaborative, open, servo, and self-organizing characteristics, with the ultimate goal of optimizing value. The full life cycle engineering framework system is built …
Research And Practice On Key Technologies For Intelligentization Of Coal Mine,
2023
CCTEG Chinese Institute of Coal Science, Beijing 100013, China; CCTEG Xi’an Research Institute (Group) Co., Ltd., Xi’an 710077, China
Research And Practice On Key Technologies For Intelligentization Of Coal Mine, Wang Haijun, Cao Yun, Wang Honglei
Coal Geology & Exploration
Intelligentization of coal mine is an important way for coal industry to achieve sustainable development. It provides effective guarantee for coal mine enterprises to reduce workers, increase efficiency and improve the production safety. The new generation of information technologies, such as big data, robotics and artificial intelligence, strongly support the intelligent construction of coal mines. Firstly, the design ideas of intelligent mines are introduced in this paper, and the overall technical system of intelligent construction are developed. Secondly, the development status and trend of key technologies for the intelligentization of coal mine are analyzed, including the general heterogeneous control and …
Research Progress And Thinking On Integrated Tunneling And Detection Technology Of Rock Roadway With Tbm,
2023
State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines, Huainan 232001, China
Research Progress And Thinking On Integrated Tunneling And Detection Technology Of Rock Roadway With Tbm, Yuan Liang, Zhang Pingsong
Coal Geology & Exploration
The construction of Full Face Tunnel Boring Machine (TBM) in coal mines is crucial for achieving efficient and modern high-intensity development and mining operations. However, TBM has poor adaptability to adverse geological conditions, such as fracture zones, faults, soft rock layers, and water-rich areas, which can cause problems such as collapses, equipment sticking, and water gushing, hindering their development. To fully utilize the rapid tunneling efficiency of TBM, integrated design between advanced detection instruments and TBM must be performed. The key technology is the breakthrough in detection-while-tunneling. This paper reviews recent advancements in the integrated tunneling and detection technology of …
Construction Of Geological Guarantee System For Green Coal Mining,
2023
Shaanxi Provincial Key Laboratory of Geological Support for Coal Green Exploitation, Xi’an University of Science and Technology, Xi’an 710054, China; College of Geology and Environment, Xi’an University of Science and Technology, Xi’an 710054, China; Geological Research Institute for Coal Green Mining, Xi’an University of Science and Technology, Xi’an 710054, China
Construction Of Geological Guarantee System For Green Coal Mining, Wang Shuangming, Geng Jishi, Li Pengfei, Sun Qiang, Fan Zhangqun, Li Dan
Coal Geology & Exploration
Large-scale and high-intensity mining of coal resources has induced damage to geological conditions and ecological environment in coal mining areas. It is of great significance to study the coupling mechanism of geological structure-groundwater environment-ecological environment dynamic evolution caused by coal mining. Development of the theory and technology of geological guarantee for green coal development is also critical for ensuring the high-quality development of coal industry in China. In additional to the current coal mining technology, research status of geological guarantee for green development of coal is analyzed in this paper Scientific connotation of “system of geological guarantee for green development …
