Results 11 to 20 of about 689,431 (233)

Deformation and Failure Mechanism of Surrounding Rock in Mining-Influenced Roadway and the Control Technology

Shock and Vibration, 2021
Aiming at the problem of surrounding rock deformation and failure of mining roadway and its control, a mechanical model of the circular roadway under the mining environment is established, and the implicit equation of the plastic zone boundary is derived.
Jicheng Feng, Shuaifeng Yin, Zhiheng Cheng, Jianjun Shi, Haoyu Shi, Haitao Xu, Shuying Guo   +6 more
doaj   +2 more sources

Hydraulic support crushed mechanism for the shallow seam mining face under the roadway pillars of room mining goaf

International Journal of Mining Science and Technology, 2017
While the fully-mechanized longwall mining technology was employed in a shallow seam under a room mining goaf and overlained by thin bedrock and thick loose sands, the roadway pillars in the abandoned room mining goaf were in a stress-concentrated state,
Fangtian Wang, Chaohua Duan, Shihao Tu, Ningning Liang, Qingsheng Bai   +4 more
doaj   +2 more sources

Design and system application of risk evaluation model for mining roadway stability

Meikuang Anquan
For the problem that the potential risk of coal mine roadway is difficult to be quantified and predicted, the risk factors affecting the stability of roadway are screened and extracted.
Qingshui MA, Xiangzheng ZHAO, Zhenqi SONG, Yuhu YANG   +3 more
doaj   +2 more sources

Roadway Protection by Roof-Cutting in the Support Removing Channel of the Long-Wall Mining Face

Shock and Vibration, 2022
Aiming at strong mining pressure and large deformation of surrounding rock in the main roadway, a mechanical model of the advanced abutment pressure distribution in the long-wall mining face was established.
Xingyun Ren, Bingyuan Hao, Hongwei Wang, Junjie Zhao, Ji Zhang, Chen Zhang   +5 more
doaj   +2 more sources

Research on the dynamic pressure influence and support engineering strategy of roadway group under multi section collaborative mining conditions

Scientific Reports
Multiple roadways have been excavated to form an underground production system, which is used for multi section collaborative mining of room pillar structures, achieving efficient mining of underground inclined and steeply inclined ore bodies; however ...
Yantao Zheng, Chao Zhao, Bingxi Jian, Yulin Chen, Song Shi, Xuanlin Li, Changwu Liu, Qingwei Bu, Tiejun Tao   +8 more
doaj   +2 more sources

Research of roadway deformation induced by mining disturbances and the use of subsection control technology

Energy Science & Engineering, 2022
To address the problem of instability and failure of the 11,514 return air roadway caused by dynamic pressure in Jinhuagong Coal Mine, this study uses theoretical analysis, numerical simulation, and field test methods.
Pengfei Wu, Bing Liang, Jiaxu Jin, Gang Li, Beifang Wang, Bin Guo, Zetao Yang   +6 more
doaj   +1 more source

Monitoring the safety status of service bolts in mining roadways

PLOS ONE, 2022
To monitor the safety status of the bolts in coal mining roadways in real time, the safety and stability of the bolt support structure were evaluated. Based on the conventional support bolts used in the field, a fiber Bragg grating (FBG) sensor and medium materials were selected. Through theoretical analysis, the bolt tension, and FBG temperature tests,
Jianjun Dong, Zhengquan Xie, Gaoyang Zheng, Hao Jiang   +3 more
openaire   +3 more sources

Stress Evolution Mechanism and Control Technology for Reversing Mining and Excavation under Mining-Induced Dynamic Pressure in Deep Mine

Geofluids, 2022
In order to alleviate the relationship between mining and roadway, the 3204 working face and the 3206 roadway in Shanxi Taitou coal mine are taken as an example, and the width of mining and the support parameters of mining while reversing mining and ...
Jiyu Wang, Fangtian Wang, Xigui Zheng
doaj   +1 more source

On 3D geo-visualization of a mine surface plant and mine roadway [PDF]

Geo-spatial Information Science, 2007
Constructing the 3D virtual scene of a coal mine is the objective requirement for modernizing and processing information on coal mining production. It is also the key technology to establish a “digital mine”. By exploring current worldwide research, software and hardware tools and application demands, combined with the case study site (the Dazhuang ...
Yunjia Wang, Yongming Fu, Erjiang Fu
openaire   +1 more source

Surrounding rock support technology of extra thick coal seam roadway under the influence of mining

Meikuang Anquan, 2021
In view of the difficulty of surrounding rock support in the extra thick coal seam roadway affected by twice mining in Suancigou Coal Mine, the deformation and failure law of surrounding rock in the extra thick coal seam roadway under the influence of ...
LYU Kun
doaj   +1 more source