Results 21 to 30 of about 3,284,481 (140)

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

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

Mitigating Coal Spontaneous Combustion Risk within Goaf of Gob-Side Entry Retaining by Roof Cutting: Investigation of Air Leakage Characteristics and Effective Plugging Techniques

Fire
Relative to conventional coal pillar retention mining technology (the 121 mining method), gob-side entry retaining by cutting roof (the 110 mining method), a non-pillar mining technique, efficiently addresses issues like poor coal resource recovery and ...
Zhipeng Zhang, Xiaokun Chen, Zhijin Yu, Hao Sun, Dewei Huang, Jiangle Wu, Hao Zhang   +6 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

Stability Control of Multilayer Roof Strata in the Large Mining Height Gob-Side Entry: A Case Study

Applied Sciences
Roof separation, destabilization and collapse of multilayer roof structures are difficult to control in large mining height gob-side entries due to severe mining pressure.
Yong Chen, Yingpeng Wang, Zhengyuan Qin, Feng Yang, Vivek Agarwal   +4 more
doaj   +2 more sources

Floor Heave Control in Gob-Side Entry Retaining by Pillarless Coal Mining with Anti-Shear Pile Technology

Applied Sciences
The severe floor heave in gob-side entry retaining is the major restriction factor of the wide application of pillarless mining thin coal seams. Reinforcement and stress-relief floor heave control methods are the most promising.
Ivan Sakhno, Svitlana Sakhno, Krzysztof Skrzypkowski, Oleksandr Isaienkov, Krzysztof Zagórski, Anna Zagórska   +5 more
doaj   +2 more sources

Optimization study on filling material beside gob-side entry retaining

, 2021
In order to make gob-side filling body of gob-side entry retaining adapt to the roof movement, the properties of concrete material is modified by adding polymer and steel fiber to achieve the purpose of “yield-support”.
HUANG Zhengdong, ZHANG Dongfeng, ZHANG Xiaoqiang
core   +1 more source

Model drawing of gob-side entry retaining goaf retention in Qipanjing Mine.

, 2022
Model drawing of gob-side entry retaining goaf retention in Qipanjing Mine.
Dongjie Hu (12666891), Zongxiang Li (12468997)   +1 more
core   +1 more source

The Floor Heave Mechanism and Control Technology of Gob-Side Entry Retaining of Soft Rock Floor

, 2023
Extensive soft-rock floor heave in gob-side entry retaining considerably restricts the efficient and sustainable production of the mine. The mechanical capacities of roadway roof and floor strata are discussed through laboratory tests by taking the N2301
Lei Hu, Guangyuan Song, Zexin Li, Qi Ma, Yu Zhang, Yu Zheng, Wanzi Yan, Yidong Zhang   +7 more
core   +1 more source

Risk determination of spontaneous combustion in roof cutting gob-side entry retaining U + L ventilation goaf

, 2022
   oftadaDynamic distribution and prevention of spontaneous combustion in roof cutting gob-side entry retaining goaf of the first mining face 
DJ Hu (11950898)
core   +1 more source