Results 71 to 80 of about 2,391,241 (156)

1303 fully mechanized top-coal caving face goaf nitrogen injection circuit.

, 2021
1303 fully mechanized top-coal caving face goaf nitrogen injection circuit.
Youli Yao (28474), Qingjie Qi (9674147), Zhangxuan Ning (11457434), Yun Qi (560401), Wei Wang (17594)   +4 more
core   +1 more source

Current status and prospects of surrounding rock control and intelligent coal drawing technology in fully mechanized caving face

Gong-kuang zidonghua
This paper analyzes the current status and existing issues in the control technology of surrounding rock and intelligent top coal caving technology for thick and ultra-thick coal seams in fully mechanized caving faces.
PANG Yihui, GUAN Shufang, JIANG Zhigang, BAI Yun, LI Peng   +4 more
doaj   +1 more source

Distribution Characteristics of Stress Sources and Surrounding Rock Structure Control Techniques of Gob‐Side Entry Driving in Extra‐Thick Coal Seam

Advances in Civil Engineering, Volume 2026, Issue 1, 2026.
To address the challenges of surrounding rock control caused by complex stress sources and intense ground pressure in gob‐side entry driving (GED) with narrow coal pillars under extra‐thick coal seams, this study takes the 10 m‐thick coal seam 8204 panel of Tashan Coal Mine as the engineering background.
Dongjie Jiang, Guangzhong Sun, Junjie Guo, Junwen Li, Xing Xu, Qi Ma, Arnab Biswas   +6 more
wiley   +1 more source

Exploration and Comprehensive Treatment Technology of Overburden Fracture in UnderlyingGoaf of Reservoir

Meikuang Anquan, 2020
Taking the grouting filling treatment project in the goaf of 8712 working face of Huoshizui Coal Mine as the background, based on the theory of mining subsidence and the method of combining borehole wave velocity test and pressure water test, the ...
HUANG Jianfeng, WU Zhang, WANG Yutao, DUAN Peiran, LI Yongqiang, ZHANG Hao
doaj   +1 more source

Research Progress and Typical Cases of Deep Mines Backfill Technology in China

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
With the increasing depletion of shallow mineral resources and the growing demand for metals, deep mining has become a strategic focus for China. However, deep mining operations face a series of complex challenges, including high ground stress, elevated geothermal gradients, and severe rockburst hazards.
Shuai Li, Zhenyu Dan, Haoxuan Yu, Zhenzhong Xiang, Junyu Chen, Luyu Wang   +5 more
wiley   +1 more source

Study on the Evolution of Concentrated Stress Distribution in Close‐Proximity Coal Seam Residual Pillars

International Journal of Energy Research, Volume 2026, Issue 1, 2026.
Closely spaced coal seams are extensively distributed across China. As shallow coal resources face increasing depletion, coal mining is gradually extending to deeper zones. Deciphering the stress distribution pattern of the residual coal pillar floor in closely spaced coal seams is of profound importance to the safe and efficient mining operations of ...
Dengyan Gao, Chenyang Ma, Wen Luo, Kuiying Gao, Jing Chai, Zhicheng Han, Jianhua Chen, Yinsu Tian, Meilu Yu   +8 more
wiley   +1 more source

Study on thin bedrock deformation and strata behavior in coal seam mining under ultra-thick unconsolidated strata

Gong-kuang zidonghua, 2018
Taking No.12051 fully-mechanized coal face of Zhaogu No.1 Coal Mine as research object, thin bedrock deformation and strata behavior in coal seam mining under ultra-thick unconsolidated strata were studied by use of UDEC numerical simulation software ...
ZHAI Xinxian, LYU Chao, TANG Shijie, YU Chunsheng   +3 more
doaj   +1 more source

Research and exploration of longwall fully mechanized mining in steeply dipping coal seams

Meitan kexue jishu
To address the challenges of safe and efficient mining in steeply dipping coal seams in China and support the intelligent transformation of the coal industry, this article focuses on fully mechanized longwall mining technology for such seams.
Yongping WU, Panshi XIE, Dongfeng YUN, Hongwei WANG, Xicai GAO, Wenyu LYU, Shenghu LUO, Ding LANG, Bosheng HU, Hao ZHANG, Yingyi ZHANG   +10 more
doaj   +1 more source

The Influences of Key Strata Compound Breakage on the Overlying Strata Movement and Strata Pressure Behavior in Fully Mechanized Caving Mining of Shallow and Extremely Thick Seams: A Case Study

Advances in Civil Engineering, 2019
In order to analyze the impact of compound breakage of key strata on overlying strata movement and strata pressure behavior during the fully mechanized caving mining in shallow and extremely thick seams, this paper took the 1322 fully mechanized caving ...
Junmeng Li, Yanli Huang, Jixiong Zhang, Meng Li, Ming Qiao, Fengwan Wang   +5 more
doaj   +1 more source

Characters Evaluation of Ground Pressure in Fully Mechanized Top Coal Caving Face in Soft Coal Seams

, 2011
Based on the big thickness, low stiffiness and other characters of No. 8 coal seam in Huaibei mining area, the moving laws of top coal seam and roof, and distribution law of ground pressure were studied under the fully mechanized top coal caving.
Yang Li, Xiao Hua Wu, Wei Dong Pan
core   +1 more source