Results 11 to 20 of about 6,874,732 (236)
Study on overburden structure and working resistance of supports in deep buried coal seam
Meikuang Anquan, 2023 In view of the characteristics of complex overburden structure and strong mining pressure in deep coal seam working face with large mining height, taking Yangchangwan Coal Mine as the engineering background, the mechanical model of overburden rock ...
LIU Hongtao, HAN Zhou, HAN Zijun, YANG Zhihua, HE Weisheng, WANG Sichen, LUO Zilong
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A 3D modeling method of bending zone in overburden strata
Gong-kuang zidonghua, 2018 For problem that tri-prism model cannot accurately represent irregular stratum structure especially borehole deviation, a 3D modeling method of bending zone in overburden strata based on generalized tri-prism model was proposed.
SHI Xiaonan, JIN Qifeng, SHEN Xia
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Study on rotation angle and three-zone deformation characterization of hinged structure of mining overburden rock based on OFDR [PDF]
Meitan kexue jishuIn order to study the fiber optical strain characterization method of the overlying rock structure during mining in a certain mine in northern Shannxi, based on the engineering geological conditions of 12217 working face in Buertai Mine, the strain ...
Qi LIU +4 more
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Gong-kuang zidonghuaIn the stratified fully mechanized caving of ultra-thick coal seams, the inclined layout of upper and lower caving faces leads to lower fully mechanized caving face intermittently crossing residual coal pillars of the upper layer. This results in complex
LIU Yong +7 more
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Development of new ecological footprint techniques applicable to consumer electronics [PDF]
, 2002 This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.In order to extend ecological footprint analysis (EFA) to electronic products, new methods had to be developed which associate the world average ...
Frey, Sibylle D
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Meikuang Anquan, 2021 In order to study the optimal scheme of staggered distance mining in double coal seam and its influence on the key strata of overburden structure, take the geological conditions of Yushen Mine Area as the background, the optimal scheme was selected from
SUN Xueyang, LU Mingjiao, LI Cheng, MIAO Lintian
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Fracture structure of the overburden in the layered mining of extremely thick coal seams: Developmental patterns of caving zones and hydraulically conductive fracture zones and fracture characteristics [PDF]
Meitian dizhi yu kantanObjectiveThe Zhunnan Coalfield, a coalfield on the southern margin of the Junggar Basin in Xinjiang, boasts abundant coal resources. However, water hazards in mines severely constrain the safe and efficient coal production in the coalfield.
Xin ZHANG +8 more
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Mechanism of stress-loaded rockburst in fully mechanized top-coal caving stope with deep overburden
Meitan xuebao, 2023 The stress-loaded rockburst is a unique type of rockburst that occurs in some fully mechanized top-coal caving stopes with deep thick overburden, its occurrence mechanism is still unclear, leading to the failure to effective prevention and even serious ...
Xiang ZHANG +10 more
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Meitan kexue jishu, 2023 The mining of extremely thick coal seam form a large space stope, the fracture disturbance of hard roof spreads to a wide range, the working face weighting has the characteristic of “strong mine pressure”, it is obviously different from rock burst ...
YU Bin +3 more
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Coevolution mechanism and branch of pillar‐overburden fissures in shallow coal seam mining
Energy Science & Engineering, 2023 The large‐scale mining of coal resources promotes the formation of section coal pillar groups between working faces. The overlying strata are supported by coal pillars, which leads to the formation of a unique fracture‐bearing structure in the key ...
Jie Zhang +6 more
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