Results 71 to 80 of about 5,124 (199)

Distribution Law of Abutment Pressure and Support Technology in the Roadway of Repeated Mining in the Fully Mechanized Top Coal Caving Mining Face

Advance in Civil Engineering
Due to repeated mining in the 130203 fully mechanized top coal caving mining face of the coal mine, the severe mining pressure phenomenon occurs in the return airway.
Fengyuan Lv, Junmeng Li, Guiyuan Wang, Qiming Wei, Yuxin Ren, Yuancheng Pei, Kun Ma, Y. Gong   +7 more
semanticscholar   +1 more source

Study on Flow Field Evolution Law of Goaf in Fully Mechanized Caving Face and Gel Air Leakage Blocking Technology under Withdrawal Condition. [PDF]

ACS Omega
During the retreat period of the fully mechanized coal mining face underground, the intensity of air leakage is high and the distribution of residual coal is widespread, which exacerbate the risk of spontaneous combustion of residual coal in the goaf ...
Xie S, Dong C, Liu X, Li L, Wang G, Hao R.   +5 more
europepmc   +2 more sources

Design of Initial Mining Pressure Relief Scheme for Large‐Size Mining Face: A Case Study

Engineering Reports, Volume 8, Issue 4, April 2026.
The numerical simulation analysis method is used to compare the actual mining face (315 m) with the designed mining face (200 m). The results show that the large mining height working face has larger abutment pressure peak and stress concentration factor than the general mining height working face.
Qinghu Wei, Ming Ji, Biao Huang, Kang Guo   +3 more
wiley   +1 more source

Safe Effective Key Mining Technologies of Fully Mechanized Caving Face in Steeply Dipping Seam [PDF]

Proceedings of the 2015 3rd International Conference on Management Science, Education Technology, Arts, Social Science and Economics, 2015
Floor failure and slipping, rib spalling, toppling and slanting of supports and gliding of equipment in the panel generally exist during the top coal caving of steeply inclined thick seam. Technologies of fast moving, zone controlling of surrounding rock and equipment’s stability controlling were put forward through theoretical analysis and field ...
Zhan-bo Cheng, Xiao-meng Li
openaire   +1 more source

Similar Material Simulation Study on Dam Movement and Deformation Law of Deep Coal Seam Mining Under Dam

Energy Science &Engineering, Volume 14, Issue 4, Page 1808-1821, April 2026.
Aiming at the difficulties in accurately calculating the movement and deformation of small‐sized, deep‐buried dams with a significant height‐to‐depth ratio in deep fully mechanized caving mining, this study proposes to separate the analysis of surface and dam deformation.
Zhang Feng, Qin Hong‐yan, Hu Shou‐bin, Xu Xiao‐yu, Ti Zheng‐yi, Zheng Zhuo‐yan, Yang Shuai, Li Yang   +7 more
wiley   +1 more source

An analytical methodology of rock burst with fully mechanized top-coal caving mining in steeply inclined thick coal seam

Scientific Reports
Rock burst disaster is still one of the most serious dynamic disasters in coal mining, seriously restricting the safety of coal mining. The b value is the main parameter for monitoring rock burst, and by analyzing its changing characteristics, it can ...
Pengfei Shan, Zhongming Yan, Xingping Lai, Huicong Xu, Qinxin Hu, Zhongan Guo   +5 more
semanticscholar   +1 more source

Research on the Laws of Destructive Patterns and Control Measures of Overlying Rock in High‐Efficiency Large‐Scale Mining Faces

Energy Science &Engineering, Volume 14, Issue 4, Page 1851-1863, April 2026.
With the advancement of coal mining technology driving the development of working faces toward increased mining heights and extended lengths, the enlargement of face dimensions has led to expanded overlying strata failure zones and intensified ground pressure manifestations. Consequently, traditional methods for determining hydraulic support resistance
Chen Gong, Peilin Gong, Kang Yi, Kaijie Duan, Lizhu Liu, Peng Li   +5 more
wiley   +1 more source

Evolution characteristics of overburden structure in inclined fully mechanized caving under residual coal pillars of the upper layer

Gong-kuang zidonghua
In 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, WANG Hongwei, WU Xuesong, TIAN Chengpeng, GUAN Rongfu, NIE Yunxiao, FAN Zhiwei, CAO Peipei   +7 more
doaj   +1 more source

Characteristics of Deformation and Damage of Multi‐Thin Composite Oil Shale Top Plate Under the Influence of Different Factors

Energy Science &Engineering, Volume 14, Issue 4, Page 2118-2136, April 2026.
In this study, the key control mechanism of surrounding rock stability is revealed by theoretical analysis and UDEC‐Trigon numerical simulation method, aiming at the problem that oil shale roof is prone to separation and slip deformation under complex stress.
Jiang Xiao, Yujiang Liu, Yihui Wang, Boyuan Zhang, Yulin Wang, Tongxiaoyu Wang   +5 more
wiley   +1 more source

Coal seam gas control technology in working face with low content and high gas emission

Meikuang Anquan, 2021
In order to solve the problem of increasing gas emission caused by ultra-high intensity mining in fully mechanized top coal caving face with large mining height, starting from the gas emission law of fully mechanized caving face with large mining height,
ZHANG Dongxu
doaj   +1 more source