Results 51 to 60 of about 167,709 (298)

Law of strata pressure behavior of surrounding rock in nearby goaf roadway for extra-thick coal seams of Datong mine area

Frontiers in Earth Science, 2023
The nearby goaf road in the extra-thick coal seam of the Datong mining area exhibits intense strata pressure behavior, which affects the working face mining.
Xiaoyong Lian, Chen Li, Jun Li, Liang Wu
semanticscholar   +1 more source

Study on Pressure Relief Effect of Rock Mass with Different Borehole Parameters

Advances in Civil Engineering, 2021
Rock burst is one of the disaster accidents that can easily happen in rock cavern engineering. At present, one of the most commonly used methods to control rock burst is borehole pressure relief technology. In this paper, the influence of drilling layout
Chao Peng, Wanrong Liu
doaj   +1 more source

Stability and Cementation of the Surrounding Rock in Roof-Cutting and Pressure-Relief Entry under Mining Influence

Energies, 2022
The application of roof-cutting and pressure-relief gob-side entry retention plays a critical role in controlling the stability of the surrounding rock at the entry, easing continuity tension and improving resource recovery ratio.
Xizhan Yue, M. Tu, Yingfu Li, Guanfeng Chang, Chen Li   +4 more
semanticscholar   +1 more source

Method for calculating pressure of surrounding rock in loess tunnels

Yantu gongcheng xuebao
To propose a calculation method for surrounding rock pressure applicable to loess tunnels, analyzed the formation mechanism of surrounding rock pressure in loess tunnels, based on a large amount of field test data of surrounding rock pressure, extracted ...
LUO Yanbin, CHEN Hao, CHEN Jianxun, , WANG Chuanwu
doaj   +1 more source

Instability Mode and Control Technology of Surrounding Rock in Composite Roof Coal Roadway under Multiple Dynamic Pressure Disturbances

Geofluids, 2022
In view of the problems of composite roof coal roadway under multiple dynamic pressure disturbances such as strong stratification, large deformation of the roadway surrounding rock, and poor safety and reliability, this paper analyzed the deformation and
Peng Wang, Nong Zhang, Jiaguang Kan, Xing-liang Xu, Guangzhen Cui   +4 more
semanticscholar   +1 more source

Buckling failure of highly-stressed hard rocks surrounding deep underground openings and confining effects of backfilling material

, 2012
The buckling failure of highly-stressed hard rocks surrounding deep underground openings is analyzed in this paper. The effects of the eccentricity of maximum tangential stress and the radial stress gradient are considered in the analysis.
Li, X. B., Wong, Louis Ngai Yuen, Li, D. Y., Liu, Z. X., Ma, C. D., Wong, L. N Y   +5 more
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Analysis of Surrounding Rock Control Technology and Its Application on a Dynamic Pressure Roadway in a Thick Coal Seam

Energies, 2022
The deformation control of roadways surrounded by rock in the fully mechanized amplification sections of extra-thick coal seams is problematic. To analyze the failure and failure characteristics of a support frame, as well as the deformation and failure ...
Jian Hao, Anfa Chen, Xuelong Li, Hua Bian, Guanghua Zhou, Zhe Wu, Linjun Peng, Jianquan Tang   +7 more
semanticscholar   +1 more source

Residual rock deformation of lined caverns for underground energy storage after air deflation considering stress path

Journal of Rock Mechanics and Geotechnical Engineering
This study investigates the mechanical response of an underground cavern subjected to cyclic high gas pressure, aiming to establish a theoretical foundation for the design of lined rock caverns (LRCs) for energy storage with high internal pressure, e.g ...
Chen Xu, Caichu Xia, Gecheng Zhang, Sheng Wang, Hui Lu, Yingjun Xu   +5 more
doaj   +1 more source

Mechanical behaviors of surrounding rock and supporting structure of shallow-buried unsymmetrical pressure tunnel crossing soil–rock interface [PDF]

, 2023
Shallow bias tunnels are sensitive at the entrance section, where the existence of soil–rock interface (SRI) results in more complex deformation of surrounding rock and supporting structure.
Zhinan Hu, Yunfei Wang, Yonggang Wang, Ji Zhang   +3 more
core   +1 more source

Experimental Study on Pressure Relief Mechanism of Variable-Diameter Borehole and Energy Evolution Characteristics of the Surrounding Rock

Energies, 2022
Conventional borehole pressure relief can meet the requirements for preventing rock bursts, but it can also easily destroy the roadway, resulting in system support failure.
Yangyang Li, Rongwei Guo, Shichuan Zhang, Bing-zhang Chen, H. Yan, Wenhang Meng, Dan Zheng   +6 more
semanticscholar   +1 more source