Results 21 to 30 of about 1,470,376 (107)

Deformation failure law and control countermeasures of deep buried weakly cemented soft rock roadway

Meikuang Anquan, 2022
In order to study the deformation-failure law of deep buried weakly cemented soft rock roadway and determine reasonable control countermeasures, taking the south main return laneway of Yuwu Coal Mine as an example, the strain softening model parameters ...
HUANG Yong, PAN Xiahui, LIN Zhibin
doaj   +2 more sources

Inversion method of mechanical parameters of rock mass insoft rock roadway and its engineering applicatio

Gong-kuang zidonghua, 2018
In order to improve calculation efficiency of underground rock engineering parameters, displacement inversion calculation of rock mass parameters was carried out by orthogonal experiment.
WU Genshui, YU Weijian, LIU Ze, LIU Fangfang, HUANG Zhong   +4 more
doaj   +2 more sources

Anchoring mechanism and application of hydraulic expansion bolts used in soft rock roadway floor heave control

International Journal of Mining Science and Technology, 2013
Comparing with the resin bolt, the hydraulic expansion bolt has different anchoring mechanism and application advantage. According to the working mechanism of the hydraulic expansion bolt, its anchoring force is expressed in four forms including support ...
Qingliang Chang, Huaqiang Zhou, Zhihong Xie, Shiping Shen   +3 more
doaj   +2 more sources

Study on Roof Presplitting Mechanism and Deformation Control of Reused Roadway in Compound Soft Rock by Roof Presplitting Approach

Geofluids, 2022
Based on the compound soft rock movement law, the rock formation structural features for a mining roadway were examined. Furthermore, the presplitting, extension, and coalescence mechanism of rock formation and the engineering needs for reusing an ...
Fuzhou Qi, Dangwei Yang, Xinming Li, Bin Li, Yingying Zhai, Shuisheng Yu   +5 more
doaj   +2 more sources

Collaborative control technology and application of support and modification for soft-rock roadway in a kilometer-deep coal mine

Scientific Reports
The soft-rock roadways in kilometer-deep coal mines are often damaged by large deformation and have to be periodically expanded and repaired, which seriously restricts the safe and efficient production of coal mines.
En Wang, Shuaifeng Yin, Xuexi Chen, Ze Gao, Aiguo Sun, Yitao Yan   +5 more
doaj   +2 more sources

Modeling and Simulation of Deformation Mechanism of Soft Rock Roadway considering the Mine Water

Geofluids, 2020
The existence of coal mine water has an important influence on the instability of soft rock roadway in mining engineering. Considering the effect of mine water, a case study on the fracture mechanism and control technology of soft rock roadway was ...
Yanlong Chen, Qiang Li, Hai Pu, Peng Wu, Liang Chen, Deyu Qian, Xuyang Shi, Kai Zhang, Xianbiao Mao   +8 more
doaj   +2 more sources

Fracture distribution and deformation mechanism of surrounding rock in two-way extremely unequal pressure soft rock roadway [PDF]

Meitan xuebao
The failure of butterfly plastic zone in roadway surrounding rock is an important reason for the large deformation of roadway surrounding rock. In recent years, it has attracted the attention of roadway support workers.
Weijun WANG, Yujie MA, Lei FAN, Chao YUAN, Hai WU, Xinyu TIAN   +5 more
doaj   +2 more sources

Roadway Instability Mechanism of Weakly Consolidated Soft Rocks and Support Technologies

Geofluids, 2023
During tunneling in weakly consolidated soft rock strata, lithology, joints, and fractures of rock strata play an important role in controlling overall roof stability of the roadway.
Jinlong Cai, Min Tu, Luxiu Chai, Fengyan Qin, Zhengfeng Shen   +4 more
doaj   +1 more source

Evolution of Interior and Exterior Bearing Structures of the Deep-Soft-Rock Roadway: From Theory to Field Test in the Pingdingshan Mining Area

Energies, 2020
Pingdingshan mining area is one of the typical deep mining areas in China, and most of the mines in this area are troubled by the difficulties of the deep-soft-rock roadway support.
Qingxian Huang, Xufeng Wang, Xuyang Chen, Dongdong Qin, Zechao Chang   +4 more
doaj   +1 more source

Study on deformation and instability characteristics and control technology of deep soft rock roadway with strong mining

SN Applied Sciences, 2023
With the development of deep mining of coal resources, the problem of deep roadway management is becoming increasingly prominent. This study aims to analyze the deformation and failure mechanism of deep-buried soft rock roadway under the influence of ...
Jian Li, Yongle Li, Zhengzheng Xie, Nong Zhang, Feng Guo, Qinghua Chen, Sijia Liu   +6 more
doaj   +1 more source