Results 31 to 40 of about 112 (86)

Study on the Shadow Effect of the Stress Field around a Deep-Hole Hydraulic-Fracturing Top-Cutting Borehole and Process Optimization

, 2023
The clean utilization and green development of coal resources have become a research focus in recent years. Underground hydraulic fracturing technology in coal mines has been widely used in roof pressure relief, top coal pre-splitting, gas drainage ...
Shuanlin Wang, Jianqiao Luo
core   +1 more source

Driving factors analysis and risk prediction of ecological environment in typical coal mining area of Western China

Meitan xuebao
The extraction of coal seam could induce a series of ecological environment problems in arid and semi-arid mining area of Northwest China. In order to clarify the driving factors of ecological environment in coal mining areas and form an ecological risk ...
Qiangmin WANG, Shuning DONG, Hao WANG, Jie FANG, Xiaodong WANG, Wei CHENG, Shuxuan WANG, Xiyu ZHANG   +7 more
doaj   +1 more source

Mechanism of Dynamic Failure in Roadways with Thick and Competent Roof Strata: A Case Study

Advances in Civil Engineering, Volume 2019, Issue 1, 2019., 2019
Rock and coal dynamic failures have a higher chance to occur when thick and competent roof strata are presented, which can build up a high level of energy. This paper studied the fracturing characteristics of the competent roof strata during longwall face retreat and their effects on roadways’ stability to gain an improved understanding of the rock ...
Jinshuai Guo, Liqiang Ma, Feng Ju, Chengguo Zhang, Fangtian Wang, Shuai Guo, Timo Saksala   +6 more
wiley   +1 more source

Effect of Coal Mining on Springs in the Yushenfu Mining Area of China

Geofluids, Volume 2018, Issue 1, 2018., 2018
The main purpose of this study was to analyze the effect of coal mining on the springs in the Yushenfu mining area of China. The results of two springs and hydrological surveys conducted in 1994 and 2015 were compared to study the occurrence and evolution of springs before and after large‐scale mining.
Li-min Fan, Tao Li, Maoxi Xiang, Weizhong He, Boyun Wu, Jie Peng, Yonghong Li, Cheng Li, Miao-miao Zheng, Jianping Chen, Shuai Gao, Jiangli Du, Yiwei Ji, Fangtian Wang   +13 more
wiley   +1 more source

Theory and engineering practice of coal-water coordinated mining based on constraints of formation bearing capacity

Meitian dizhi yu kantan
BackgroundThe high-intensity mining of coal resources in the Yushen mining area has caused negative environmental effects and water disasters on coal seam roofs, seriously restricting the sustainable development of the area.Methods and Results Based on a
Zhenzhong PANG, Yifan ZENG, Keyao HAN, Qiang WU, Shouqiang LIU, Zhaolai HUA, Gangyi ZHAO, Shuai ZHANG, Huxiong YANG, Xuejun WANG, Feifan LI   +10 more
doaj   +1 more source

Experimental Study on Uniaxial Compression Failure Characteristics and Mechanical Properties of Composite Aquiclude Rock

Geofluids, Volume 2024, Issue 1, 2024.
Composite aquiclude rock is an important part of the water barrier layer of coal seam floor, and its mechanical properties and failure characteristics have an important impact on the safety of coal seam mining. In order to explore the uniaxial compression failure characteristics and mechanical properties of composite aquiclude rocks, the mineral ...
Qiang Sun, Rui Zhao, Xiaolong Li, Hui Yuan, Zetian Zhang   +4 more
wiley   +1 more source

Geological-engineering integrated reconnaissance survey technology for skylights as a hidden disaster-causing factor

Meitian dizhi yu kantan
ObjectiveSkylights represent a primary hidden disaster factor in mines in the southern Yushen mining area within the Shanbei Jurassic coalfield, Shaanxi Province.
Mintao DONG
doaj   +1 more source

Research on deformation and failure characteristics of overburden and surface in high-intensity mining of Caojiatan Coal Mine

Meikuang Anquan
Under high-intensity mining conditions, the structural response of overburden is severe, significantly affecting the safety of surface structures. Taking the 122104 super-large mining height working face of Caojiatan Coal Mine in the Yushen Mining Area ...
Zhaolai HUA, Yang LYU, Shengxiang GAO, Zehui WU, Xufeng WANG, Lei ZHANG   +5 more
doaj   +1 more source

Pressure law and roof control of near shallow buried super large mining height working face

Meitan kexue jishu
Aiming at the roof control problem of super-large mining height in near-shallow buried thick unconsolidated layers represented by Yushen Mining Area, the theoretical analysis, numerical simulation and field measurement are used to analyze the pressure ...
Xiaogang LIU, Zhen ZHANG, Qianjin LIU, Jianchao REN, Maofu LIU, Xingyu LIN, Rongshan MA   +6 more
doaj   +1 more source

Sensitivity analysis of factors influencing water redistribution in vadose zones under coal mining disturbance in ecologically vulnerable areas

Meitian dizhi yu kantan
ObjectiveCoal mining-induced disturbance leads to water redistribution in the vadose zones of mining areas. The sensitivity analysis of the factors influencing this redistribution holds critical significance for the reconstruction of eco-geological ...
Ao WANG, Shiliang LIU, Shanlin WANG, Yusheng ZHENG, Tengye WANG, Zuzhen WANG, Deqiang MAO   +6 more
doaj   +1 more source