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Shirong Cao, Xiyuan Li, Zhe Zhou, Yingwei Wang and Hong Ding
This study can provide guidance for coal and coalbed methane mining processes in multi-layered coal seams.
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Shaojie Zuo, Zhaolong Ge, Zhe Zhou, Li Wang and Hanyun Zhao
Extraction of gas (coalbed methane) produces clean energy and can ensure that coal mines maintain high-efficiency production. The currently available coal seam permeability enhancing technologies and modes have certain application restrictions. Therefore...
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Longyong Shu
This study aimed to examine gas extraction technology in the goaf of an L-shaped borehole in the mining fissure zone of a short-distance coal seam group. The numerical simulation method was used to analyze the failure law of overlying rock during mining,...
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Xue Dai, Xiaoqin Li, Yuguang Zhang, Wenping Li, Xiangsheng Meng, Liangning Li and Yanbo Han
With the gradual increase of coal production capacity, the issue of water hazards in coal seam roofs is increasing in prominence. Accurate and effective prediction of the water content of the roof aquifer, based on limited hydrogeological data, is critic...
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Xicai Gao, Shuai Liu, Tengfei Ma, Cheng Zhao, Xichen Zhang, Huan Xia and Jianhui Yin
The main Jurassic coal seams of the Ordos Basin of northwest mining area have special hosting conditions and complex hydrogeological conditions, and the high-intensity coal mining of the coal seams is likely to cause groundwater loss and negative effects...
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Zhaolong Ge, Jianyu Zhong, Jianguo Zhang, Yingwei Wang, Youchang Lvu and Sai Zhang
Slotting directional hydraulic fracturing is a new method for improving permeability of a coal seam in underground coal mines that can solve problems related to non-uniform permeability enhancement in the seam. A slotting nozzle is the key to this techno...
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Hongtao Liu, Linfeng Guo, Guangming Cao, Xidong Zhao, Pengfei Wang, Tianhong Huo, Gang Yang, Cheng Hao and Qiang Wang
Strata movement due to extraction of a longwall panel is of great significance both in terms of environment and ground control. Thick coal seam extraction is expected to severely disturb the overburden, which is critical. Most studies use only one or two...
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Xinbo Zhao, Jianjun Wang and Yue Mei
Currently, coal borehole collapses frequently occur during drilling. Considering that the coal near to the wellbore is cut into blocks, and the cleat filler of the coal influences the stress distribution near the wellbore, a new theoretical solution of a...
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Zhaolong Ge, Liang Zhang, Juzheng Sun and Jinhong Hu
A finite element computer program, Comsol Multiphysics, was used to solve the partial differential equations in this paper.
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Xufeng Wang, Dongdong Qin, Dongsheng Zhang, Weiming Guan, Mengtang Xu, Xuanlin Wang and Chengguo Zhang
The efficient and safe extraction of ultra-thick coal seam in the Xinjiang East Junggar Basin has been a major focus in the future of mining in China. This paper systematically studied the overburden strata fracturing process and the structure evolution ...
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Dirk Mallants, Jirka ?imunek, Martinus Th. van Genuchten, Diederik Jacques
Pág. 1 - 33
The HYDRUS-1D and HYDRUS (2D/3D) computer software packages are widely used finite element models for simulating the one-, and two- or three-dimensional movement of water, heat, and multiple solutes in variably-saturated media, respectively. While the st...
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Angela K. Werner, Cate M. Cameron, Kerrianne Watt, Sue Vink, Paul Jagals and Andrew Page
The majority of Australia?s coal seam gas (CSG) reserves are in Queensland, where the industry has expanded rapidly in recent years. Despite concerns, health data have not been examined alongside CSG development. This study examined hospitalisation rates...
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Paul E. Hardisty, Tom S. Clark and Robert G. Hynes
Electricity generation is one of the major contributors to global greenhouse gas emissions. Transitioning the World?s energy economy to a lower carbon future will require significant investment in a variety of cleaner technologies, including renewables a...
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Jinjun Li, Zhihao He, Chunde Piao, Weiqi Chi and Yi Lu
The development height and settlement prediction of water-conducting fracture zones caused by coal seam mining play an important role in the stability of overburden aquifers and the safety of roadways. Based on the engineering geological data of the J60 ...
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Jie Zhang, Jianjun Wu, Tao Yang, Sen Yang, Yifeng He and Shoushi Gao
With the gradual increase in the mining depth of coal resources, the destruction of the rock structure of the inter-layered rock of the near coal seam under the influence of mining has led to the frequent occurrence of water-inrush disasters in mines, wh...
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Yiwen Lan, Rui Gao, Bin Yu and Xiangbin Meng
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Ning Zhang, Anye Cao, Weiwei Zhao, Qi Hao, Guowei Lv and Baixuan Wu
There is a very thick water-bearing key strata above the coal seam in the Binchang mining area. When the mining scale is large, it easily breaks and leads to rockburst with a surge of water gushing in the panel. Adopting the layout pattern of a small pan...
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Tao Yang, Jiayue Deng, Bing Peng, Jie Zhang, Yiming Zhang and Yihui Yan
China is rich in coal resources under water bodies. However, the safety prediction of high-intensity mining under water bodies has long been one of the problems encountered by the coal industry. It is of great significance to realize safe mining under wa...
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Yejiao Liu, Hui Xing, Zeyu Duan, Chaoyun Yu, Zhichao Tian and Ting Teng
The mechanical properties of gas-containing coal and rock mass play important roles in controlling the occurrence and development of coal and gas outbursts. The gradual increase in mining depth will change the failure mechanism of gas-containing coal and...
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