Results 111 to 120 of about 1,845,683 (177)

Deformation and Failure Evolution Law and Support Optimization of Gob-Side Entry in Weakly Cemented Soft Rock under the Influence of Fault

Shock and Vibration
Under the condition of weakly cemented soft rock in Western China, the surrounding rock deformation of gob-side entry is obvious, especially under the influence of fault, and the problem of surrounding rock control becomes increasingly prominent.
Chengfu Ma, Fenghai Yu, Kai Zhou, Xuerui Yang, Bo Sun, Xinyu Yao, Yani Chi, Yuanzhi Zhang   +7 more
doaj   +1 more source

Study on the Floor Heave Mechanism and Control Technology of a Gob-side Roadway Under Advanced Mining Influence

Abstract Aiming at the difficult problem of floor heave affected by advanced mining in gob-side roadway in deep mining, taking the return air flow trough of 3109 working face of Ma Tai Hao Coal Mine as the engineering background, adopting the systematic research method of "field monitoring-numerical simulation-theoretical modeling ...
Qingwei Bu, Rui Sun, Ge Wang, Zhixin Ren, Zhiyu Wang, Yuchen Zong, Zhipeng Wu   +6 more
openaire   +1 more source

Investigation of Load Characteristics and Stress-Energy Evolution Laws of Gob-Side Roadways Under Thick and Hard Roofs

Applied Sciences
The stress environments of gob-side roadways (GSRs) are becoming increasingly complex during deep coal mining under thick and hard roofs. This leads to strong strata behaviors, including roadway floor heave, roof subsidence, and even coal bursts. Among them, coal bursts pose the greatest threat to production safety in coal mines.
Zhou, Jinlong, Pan, Junfeng, Xia, Yongxue, Liu, Wengang, Du, Taotao, Wu, Jianhong   +5 more
openaire   +2 more sources

Mechanisms of Roadside Support and Application of Pier Column in Gob-Side Roadway Retaining

IOP Conference Series: Earth and Environmental Science, 2018
Xuewen Ma, Wenhui Tan, Pengfei Wang
openaire   +1 more source

Experimental Study and Application of the Different Waste Rock Compaction Characteristics Filled in Roadside of Gob-Side Entry Retaining

, 2011
Stress-strain relationship of waste body under different side pressures, water contents and particle fractions are investigated in this paper. The bearing features of waste filled body of entry retaining besides gob-side entry retaining are: (1) filling ...
Zhi Liang Fu, Yun Hai Cheng, Fu Xing Jiang, Xin Shan Guo   +3 more
core   +1 more source

Mechanical behavior of the lateral gangue-retaining structure and roof cutting regulation in fully gob-side entry driving in a steep coal seam

Geomechanics and Geophysics for Geo-Energy and Geo-Resources
Fully gob-side entry driving refers to the excavation of a roadway along the edge of the gob after the completion of mining in the adjacent panel. Since no coal pillar remains between the full gob-side entry side and the gob, the reliability of the ...
Meng Wang, Yu Han, Ningkang Meng, Yalong Xu, Zhen Wang, Ruifu Yuan, Huaizhen Li, Qingyun Xu, Chao Wu   +8 more
doaj   +1 more source

Engineering Practice of Inclined Longwall Roof Cutting and Pressure Relief Gob‐Retaining Roadway Technology in Feitian Coal Mine

To address the issues of tight mining‐excavation scheduling and challenging gas management in coal mines, this study proposes a technical scheme for inclined longwall roof cutting and pressure relief pillarless mining.
Xianbi Xu, Yuankun Zhu, Jun Huang, Zhenqian Ma   +3 more
core   +1 more source

Mechanism and prevention of coal bursts in gob-side roadway floor under thick and hard roof in the deep mining area of Ordos

The complex stress environment in deep roadways, often exacerbated by thick and hard strata, frequently precipitates coal bursts, posing significant safety hazards.
Chenyang Zhang, Wengang Liu, Yongxue Xia, Taotao Du, Junfeng Pan, Jinlong Zhou   +5 more
core   +1 more source

Structural characteristics of double layer hard roof and effects on coal pillar and roadway stability. [PDF]

iScience
Li H, Liu C, Liu H, Chen Y, Wu F.
europepmc   +1 more source

Mechanism and control strategies of asymmetric floor heave under dynamic pressure in roof-cutting gob-side entry retaining: a case study. [PDF]

Sci Rep
Wang H, Liu K, Shao Z, Yang D, Zhang S, Wang S, Guo Z.   +6 more
europepmc   +1 more source