Results 21 to 30 of about 597,919 (179)

Field measurement of the influence of coal face mining on adjacent main roadway deformatio

Gong-kuang zidonghua, 2019
At present, theory analysis and simulation analysis of surrounding rock control and deformation of main roadway often simplify some special conditions in the field, such as fault structure, which leads to large differences between simulation results and ...
ZHANG Shaohua
doaj   +1 more source

Research on instability characteristics and control technology of the mining roadway below the remaining coal pillars in the goaf

Gong-kuang zidonghua, 2022
When the extra thick coal seam is mined in the goaf, the remaining coal pillar of upper coal seam and adjacent working face will have an important impact on the stability of mining roadway.
CAO Jinzhong, GAO Le, YAN Pengfei, LI Meng, CHEN Lei, YANG Huakang   +5 more
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Experimental analysis of control technology and deformation failure mechanism of inclined coal seam roadway using non-contact DIC technique

Scientific Reports, 2021
The deformation and failure forms of inclined coal seam roadway under the joint action of dip angle and various geological conditions are complex, and there is a lack of targeted support measures, which brings great problems to the stability control of ...
Xianyu Xiong, Jun Dai, Yibo Ouyang, Pan Shen   +3 more
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Physical model test and numerical simulation on the failure mechanism of the roadway in layered soft rocks

International Journal of Mining Science and Technology, 2021
To explore the failure mechanism of roadway in layered soft rocks, a physical model with the physically finite elemental slab assemblage (PFESA) method was established.
Xiaoming Sun, Chengwei Zhao, Yong Zhang, Feng Chen, Shangkun Zhang, Kaiyuan Zhang   +5 more
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Research on control effect of long anchorage and pressure relief synergistic control in deep and strong mining roadway

Meikuang Anquan, 2022
In view of the serious deformation of surrounding rock of deep strong mining roadway, this paper takes 4203 return airway in Jianxin Mine as the engineering background, and uses FLAC3D numerical simulation software to simulate the stress distribution ...
JIN Shengyao, CUI Qi, DENG Jinping, YANG Xingguo, WANG Sujian, ZHAO Shifan, LIU Wenjing
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Study on Failure Mechanism and Control Technology of Roadway Surrounding Rock under Complex Occurrence Coal Seam

Geofluids, 2022
Aiming at the characteristics of large deformation and long deformation time under the mining influence of the 2254 east floor roadway surrounding rock, which under the condition of complex coal occurrence in Jiahe Mine.
Hai Wu, Jiaren Chen, Xu Gao, Tao Ling, Xuan Zhang, Qian Jia   +5 more
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Research on main influencing factors and complete support technology for dynamic pressure and large deformation roadway

Scientific Reports, 2023
To determine the main factors influencing dynamic pressure and large deformation roadways, a targeted set of support technologies was designed. The 2603 air inlet roadway of the Zhangcun coal mine in Lu'an, Shanxi Province, was taken as an example.
Hai Rong, Kaipeng Guo, Dequan Sun, Mingkun Luo, Wei Dong, Bingjie Huo   +5 more
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Experimental study on mechanical response failure mechanism of dynamic pressure roadway based on roof cutting and pressure releasing technology

Meikuang Anquan, 2021
In this paper, according to the current situation of fast deformation, large deformation amount and complicated deformation method of surrounding rock in dynamic pressure roadway, using field test and theoretical calculation method, the hydraulic roof ...
YANG Zheng, DING Yanxiong, GAO Xiaojun
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Study on Deformation Characteristics of Surrounding Rock of Roadway with Coal–Rock Interface

, 2023
Surrounding rock of roadway with a coal–rock interface is a common form in coal mines. In order to determine deformation characteristics and obtain the control principle of roadways with a coal–rock interface, the interface between the roof ...
Tuo Wang, Jucai Chang, Yijun Guo
core   +1 more source

Deformation and failure laws of roadway surrounding rock and support optimization during shallow-buried multi-seam mining

Geomatics, Natural Hazards & Risk, 2020
Gobs and coal pillars left in the upper coal seam exploitation bring a series of changes to the surrounding rock structures and stress environment of the roadway in the lower coal seams, which leads to difficulties in roadway maintenance.
Jun Wang, Jian-Guo Ning, Yun-Liang Tan, Shan-Chao Hu, Wei-Yao Guo   +4 more
doaj   +1 more source