Failure mechanism and control technology of large deformation for Muzhailing Tunnel in stratified rock masses

2021 ◽  
Author(s):  
Xiaoming Sun ◽  
Chengwei Zhao ◽  
Zhigang Tao ◽  
Hongwei Kang ◽  
Manchao He
Keyword(s):  
Large Deformation ◽  
Failure Mechanism ◽  
Control Technology ◽  
Rock Masses ◽  
Stratified Rock ◽  
And Control

scholarly journals Failure mechanism and control technology of water-immersed roadway in high-stress and soft rock in a deep mine

2017 ◽  
Vol 27 (2) ◽  
pp. 245-252 ◽  
Author(s):  
Renshu Yang ◽  
Yongliang Li ◽  
Dongming Guo ◽  
Lan Yao ◽  
Tongmao Yang ◽  
...  
Keyword(s):  
Failure Mechanism ◽  
High Stress ◽  
Soft Rock ◽  
Control Technology ◽  
Deep Mine ◽  
And Control

scholarly journals Failure Mechanism and Countermeasures of an Operational Railway Tunnel Invert in Horizontally Stratified Rock Masses

2022 ◽  
Vol 22 (2) ◽  
Author(s):  
Linyi Li ◽  
Junsheng Yang ◽  
Jian Wu ◽  
Shuying Wang ◽  
Xinghua Fang ◽  
...  
Keyword(s):  
Failure Mechanism ◽  
Rock Masses ◽  
Railway Tunnel ◽  
Stratified Rock

scholarly journals Research on Failure Characteristics and Zoning Control Technology of Thick-Soft Surrounding Rock for Deep Gob-Side Entry Retaining

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Jingke Wu ◽  
Wenbin Zhou ◽  
Hong Tao ◽  
Haowen Bai ◽  
Wei Yin ◽  
...  
Keyword(s):  
Bearing Capacity ◽  
Large Deformation ◽  
Failure Modes ◽  
Surrounding Rock ◽  
Control Technology ◽  
Failure Characteristics ◽  
Deformation And Failure ◽  
Rock Structure ◽  
Roof Fall ◽  
And Control

Controlling the large deformation caused by bed separation failure of thick and soft surrounding rock in gob-side entry retaining is difficult. The deformation and failure modes of thick and soft surrounding rock are summarized and classified based on field research, theoretical analysis, laboratory tests, and actual measurements. Systematic research is conducted on the lithologic characteristics, failure characteristics, and control methods of the surrounding rock. The research findings are as follows: (1) The low strength, softening, and water swelling of thick mudstone, as well as its cataclasis, dilatancy, and long-term creep under strong mining and high stress are the objective reasons for large deformation of the surrounding rock. (2) Due to the weak stability of the surrounding rock-support structure and low collaborative roof side bearing capacity, no complete supporting structure is formed with the supporting system, causing the support body in each area to be crushed one by one, which is the subjective reason for the deformation and failure of the surrounding rock. (3) The deformation and failure characteristics of thick and soft surrounding rock in gob-side entry retaining are primarily divided into eight types: roof bending and sinking type, roof cutting along filling body, rib spalling type, roof fall type, filling body rotation type, filling body crushing type, roof step type, and roof cutting along the coal side. The initial points and key points for a chain reaction of each failure type are determined. (4) The surrounding rock is divided into 10 support zones at four levels, and control technology for “zonal support and overall reinforcement” is put forward. The mechanical effect of the support body in each zone and its role in maintaining the stability of surrounding rock are analyzed. This technology can ensure the integrity of the surrounding rock structure and improve the roof side collaborative bearing capacity.

Guidance, Navigation, and Control Technology Assessment for Future Planetary Science Missions

2015 ◽  
Vol 38 (7) ◽  
pp. 1165-1186 ◽  
Author(s):  
Marco B. Quadrelli ◽  
Lincoln J. Wood ◽  
Joseph E. Riedel ◽  
Michael C. McHenry ◽  
MiMi Aung ◽  
...  
Keyword(s):  
Technology Assessment ◽  
Planetary Science ◽  
Control Technology ◽  
Navigation And Control ◽  
And Control
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