Results 11 to 20 of about 4,014 (247)

Structural model of hard overburden shell in thick coal seam and its application [PDF]

Scientific Reports
Taking the mining of extra-thick coal seam of Carboniferous hard overburden in tongxin coal mine of datong mining area as the engineering background, the movement characteristics of hard overburden in fully-mechanized caving mining of 3–5 # extra-thick ...
Xing Fu, Lingjun Zeng, Hai Rong, Hongwei Zhang, Tianhao Liu, Jiankang Song   +5 more
doaj   +4 more sources

The Overburden Structure Characteristics and Subsidence Reduction Mechanism of Mining by Overburden Bed Separation Grouting

Energy Science & Engineering
Overburden bed separation grouting (OBSG), a green mining method, can prevent coal‐mining subsidence reduction and protect the environment of mining areas.
Zhiyou Gao, Ning Jiang, Haiyang Pan, Zhenzu Qu, Chao Gong   +4 more
doaj   +3 more sources

Mining stress formation and distribution: Predictive model based on overburden key strata structure

Energy Science & Engineering
In coal mines, the effective extraction of relief gas and the prevention of dynamic disasters depend on accurate predictions of the spatial distribution of mining stress in the overlying rock.
Hongkai Han, Zhengquan Hu, Yanwei Liu, Weiqin Zuo, Xiaozhen Wang, Can Shi, Yanyan He, Yuchun Qi   +7 more
doaj   +3 more sources

Study on Space–Time Evolution Law and Mechanism of Instability Failure of Deep High-Stress Overburden Rock

Applied Sciences, 2023
In order to explore the fracture law and structural evolution characteristics of overlying strata in deep high-stress mining, according to the geometric characteristics and mechanical causes of overlying strata in different mining stages of the stope ...
Xinfeng Wang, Qiao Zhang, Wengang Liu, Youyu Wei, Tian Jiang, Fuxu Hao   +5 more
doaj   +3 more sources

Evolution characteristics of overburden structure and stress in strong mining of the deep coal seam: a case study

Frontiers in Earth Science, 2023
As coal resources are gradually being extracted at depth, the overlying strata movement behavior and stress environment become complex and violent, leading to the frequent triggering of strong dynamic hazards.
Junpeng Zou, Man Wang, Lu Bai, Chongwei Yan   +3 more
doaj   +3 more sources

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
doaj   +2 more sources

Control mechanism of the surrounding rock structure of multisection stopes in steeply dipping coal seams under overburden transient changes excitation [PDF]

Scientific Reports
The mining cycle of multi-section stopes in steeply dipping coal seams is protracted, and the ground pressure appearance is complex.This study utilized physical simulation and theoretical analysis to investigate the surrounding rock structural evolution ...
Yongping Wu, Jingyu Huangfu, Shenghu Luo, Yepeng Tang, Zhuangzhuang Yan, Chengyang Tian, Tong Wang   +6 more
doaj   +2 more sources

Failure Characteristics and Evolution Law of Overburden Structure Under Repeated Mining of Close‐Distance Coal Seam Group in Ningdong Mining Area

Energy Science & Engineering
It is difficult to control the mine pressure in the coal face under the close coal seam group. On the basis of the mining background of 4‐1#, 4‐2#, and 4‐3# coal seams in the I01 mining area of the Ningdong mining area, the fracture characteristics and ...
Shilin Song, Xuesheng Liu, Yunliang Tan, Xuebin Li, Shenglong Yang, Yu Zhang   +5 more
doaj   +2 more sources

The Influence of the Key Characteristics of Overburden Rock Structure on the Development Height of Water-Conducting Fracture in Yushenfu Coal Mine Area, China

Applied Sciences
The destruction of shallow aquifers by water-conducting fractures of overlying strata caused by underground coal mining is the most representative form of mining-induced damage in the Yushenfu mining area.
Shijie Song, Hao Ruan, Jiangbo Wei, Ruilin Niu, Xing Cheng, Baodeng Chen   +5 more
doaj   +3 more sources

Overburden structure fracture evolution and ground pressure behavior under oblique residual coal pillars in thick seam mining. [PDF]

Sci Rep
Wang H, Tian C, Liu Y, Li Y, Lu M, Jiao J, Bai J, Qiao Z.   +7 more
europepmc   +2 more sources