Results 31 to 40 of about 1,845,683 (177)

Research on the pressure relief mechanism and application of roof dense drilling of gob side entry retaining by roadway-side filling. [PDF]

Sci Rep
In gob-side entry retaining (GER) by roadway-side filling, the long cantilever beam structure formed by the goaf roof subjects the filling wall to significant compressive stress under its self-weight and overburden load, often resulting in severe deformations such as floor heave.
Tan Z, Wang Y, Gao L, Li D, Kou G, Hu C, Wang S, Huang Y.   +7 more
europepmc   +3 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   +2 more sources

Surrounding rock control technology of gob-side entry retaining in deep high mining face

Meikuang Anquan
Under the influence of multiple mining influences, the mining pressure is more intense and the surrounding rock deformation is large, which is easy to cause the surrounding rock instability of gob-side entry retaining in fully mechanized mining face.
Junhu ZHANG, Zhenjiang CHEN, Xiancheng GAO, Lei ZHANG, Jianhua LI, Pengjiang DENG   +5 more
doaj   +2 more sources

Research on surrounding rock control system of double roadway combined with roof cutting gob-side entry retaining and gob-side entry driving

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Double-roadway tunneling technology can effectively relieve the mining‐replacement pressure associated with the combined use of double roadways and gob-side entry driving in traditional longwall panels, but it also introduces difficulties in maintaining ...
Dongdong Chen, Zhixuan Zhang, Wenrui He, Fangfang Guo, Huilong Zhang   +4 more
doaj   +4 more sources

Determination of Reasonable Width of Filling Body for Gob-Side Entry Retaining in Mining Face with Large Cutting Height

Geofluids, 2022
When gob-side entry retaining is adopted in the mining face with large cutting height, due to large stope space, strong dynamic pressure, and other reasons, the filling body is usually broken and unstable due to improper width of filling body, and the ...
Shijiang Pu, Guiyi Wu, Qinzhi Liu, Yuliang Wang, Qiang Li, Yu Xiong   +5 more
doaj   +2 more sources

Safety Support Design and Sustainable Guarantee Method for Gob-Side Roadway Along Thick Coal Seams

Sustainability
Maintaining the stability of the mine roadway is of paramount importance, as it is critical in ensuring the daily operational continuity, personnel safety, long-term economic viability, and sustainability of the entire mining operation. Significant instability can trigger serious disruptions—such as production stoppages, equipment damage, and severe ...
Peng Huang, Bo Wu, Erkan Topal, Hu Shao, Zhenjiang You, Shuxuan Ma, Ruirui Chen   +6 more
openaire   +4 more sources

Research on the Instability Mechanism and Control Technology of Gob-Side Entry in Deep Mines with Soft Rock

Buildings
The gob-side entry driving in deep mines with soft rock exhibits a complex deformation and instability mechanism. This complexity leads to challenges in roadway stability control which greatly affects the coal mine production succession and safe and ...
Lu Ma, Luyi Xing, Chang Liu, Tongyuan Cui, Xi Qiao, Wang Miao, Peng Kong   +6 more
doaj   +2 more sources

Analysis on deformation characteristics of surrounding rock of gob-side entry retaining with soft bottom in thick coal seam and strengthening support technology of roof and side

Gong-kuang zidonghua, 2022
The deformation and failure mechanism of surrounding rock and the control measures under the condition of long-time high superimposed stress are the keys to gob-side entry retaining support technology in thick coal seam with soft bottom.
KANG Zhipeng, DUAN Changrui, YU Guofeng, ZHAO Jing   +3 more
doaj   +2 more sources

Floor deformation control for roof cutting and pressure relief in gob-side entry retaining of deep buried mines

Gong-kuang zidonghua
Currently, research and practice on roadway floor heave mainly explore the deformation mechanism and control technology of roadway floor. The mechanical analysis of floor before and after roof cutting and pressure relief in gob-side entry retaining is ...
SUN Jingkang, TU Min, ZHAO Qingchong, DANG Jiaxin, ZHANG Xin, LI Yamian   +5 more
doaj   +2 more sources

Research on the stability mechanism and control technique of surrounding rock in gob side entry driving [PDF]

Scientific Reports
In order to enhance coal resource recovery and improve the stress environment of roadway surrounding rock, the practice of gob-side entry driving (GED) has been applied in China.
Dingchao Chen, Xiangyu Wang, Jiaxin Zhao, Jianbiao Bai, Yuan Chu, Qingcong Zhou, Yang Yu   +6 more
doaj   +2 more sources