Results 1 to 10 of about 2,833 (184)

Dynamic distribution and prevention of spontaneous combustion of coal in gob-side entry retaining goaf. [PDF]

PLoS ONE, 2022
The 11101 working face of Qipanjing Mine was taken as the research object to explore the dynamic change law of the spontaneous combustion of the remaining coal in the gob-side entry retaining goaf area.
Dongjie Hu, Zongxiang Li
doaj   +4 more sources

Study on Surrounding Rock Stability Mechanism of Gob-Side Entry Retaining with Prefabricated Fracture [PDF]

Advances in Civil Engineering, 2021
To study the optimal layout of prefabricated roof cutting line in gob-side entry retaining with roof cutting and pressure relief, based on the engineering geological conditions of 5249 working face in Beipingdong Coal Mine of Baoyuan Mining Company, the ...
Hao Wu, Chuanqu Zhu, Qingfeng Li
doaj   +2 more sources

Stability Control and Quick Retaining Technology of Gob-Side Entry: A Case Study

Advances in Civil Engineering, 2018
In Chinese coal mines, gob-side entry retaining, an efficient technique for coal mining, has been widely used. However, severe roadway deformation and slow retaining speed have gravely restricted the popularization and its application. Hence, in order to
Hengjie Luan, Yujing Jiang, Lujie Zhou, Huili Lin   +3 more
doaj   +2 more sources

Analysis of the effect of cutting depth under thick immediate roof on gob-side entry retaining stability [PDF]

Gong-kuang zidonghua
The stability of gob-side entry retaining with roof cutting and pressure relief is primarily influenced by roof cutting parameters. However, determining appropriate cutting parameters for gob-side entry under the effect of a thick immediate roof is ...
WANG Fei, WANG Xuqiang, SHI Xinyu, XU Huicong   +3 more
doaj   +3 more sources

Evolutionary law and regulatory technology of roof migration on gob-side entry retaining. [PDF]

Sci Rep
AbstractIn order to study the evolutionary law of roof migration on Gob-Side Entry Retaining, this paper takes the gob-side entry retaining in the comprehensive mining face of the Ningtiaota coal mine as the engineering background, and analyzes the evolutionary law of the overlying rock layer on the roof at different locations during the roadway stay ...
Zhang LX, Yi L, Gang L, Liu GC, Deng ZH, Mi JL.   +5 more
europepmc   +4 more sources

Study on the failure law of surrounding rock in inclined coal seam with gob side entry [PDF]

Scientific Reports, 2023
Aiming at the problem of stability control of surrounding rock in the process of upward mining of inclined coal seam gob-side entry retaining, the gob-side entry retaining of 5449 working face in Beipingdong coal mine is taken as the research background.
Hao Wu, Qingfeng Li, Chuanqu Zhu, Liao He   +3 more
doaj   +2 more sources

Mechanism and engineering practice of roof stability for secondary gob-side entry retaining in deep mines [PDF]

Scientific Reports
To facilitate the reuse of the gob-side retained entry as a long-term return airway, alleviate mining-excavation pressure, and reduce roadway development costs, this paper proposes a secondary gob-side entry retaining technique.
Jingke Wu, Jiarui Chen, Fuxing Xie
doaj   +2 more sources

Research on surrounding rock control technology of roof cutting and pressure relieving for roadside filling in gob-side entry retaining of large mining height panel [PDF]

Scientific Reports
This article takes the transportation channel of the 2507 working face as the engineering background to carry out the analysis of the surrounding rock failure mechanism of the roadside filling in gob-side entry retaining of large mining height panel, and
Lu Weiyong, Li Shengjun, Sun Yaohui, Gao Tao, Mi Wansheng, Zhang Xiaowu   +5 more
doaj   +2 more sources

Grouting Technique for Gob‐Side Entry Retaining in Deep Mines [PDF]

Advances in Civil Engineering, 2021
The retained rib displacement accounts for roughly 80% of rib‐to‐rib convergence in gob‐side entry retaining in deep coal mines, which shows significant nonsymmetrical feature and long‐term rheological phenomenon. Affected by mining‐induced stress, cracks spread widely, and broken zones expand beyond the anchoring range.
Xianyang Yu, Zhihong Sun, Min Deng, Jinlin Xin   +3 more
openaire   +2 more sources

Spontaneous caving and gob-side entry retaining of thin seam with large inclined angle

International Journal of Mining Science and Technology, 2014
Based on the research method of combining simulation analysis with field testing by distinct element process UDEC, we have analyzed the roof deformation and failure laws and roadway support technology of gob-side entry retaining in a thin seam with a ...
Yongqin Zhang, Jianxin Tang, Daqiang Xiao, Lele Sun, Weizhong Zhang   +4 more
doaj   +2 more sources