Study on mechanism and control technology of the floor heave in the high stress soft rock roadway

2014 ◽  
pp. 771-774
Keyword(s):  
High Stress ◽  
Soft Rock ◽  
Control Technology ◽  
Floor Heave ◽  
And Control ◽  
Soft Rock Roadway ◽  
Rock Roadway

High Strength Combined Support Technology in Deep High Stress Soft Rock Roadway

2012 ◽  
Vol 524-527 ◽  
pp. 598-603
Author(s):  
Nian Jie Ma ◽  
Zhi Qiang Zhao ◽  
Hua Zhao ◽  
Li Shuai Jiang
Keyword(s):  
High Stress ◽  
Soft Rock ◽  
High Strength ◽  
Parameter Determination ◽  
Test Results ◽  
Actual Measurement ◽  
Computer Numerical Simulation ◽  
Soft Rock Roadway ◽  
Rock Roadway

In order to solve the serious damage and repeat revision problem of high stress soft rock roadway in deep -950 level of Tangshan coal mine, based on the theory of the maximum stress level, together with the actual measurement of geostress and the laboratory mechanical parameters of rock-core and computer numerical simulation, the high strength combined support technology and supporting parameters are determined and the engineering test has been done. The engineering test results show that the parameter determination of high strength combined support technology, which based on the actual measurement of geostress, can effective solve the support issue of high stress soft rock roadway and provide useful experience for similar engineering problems.

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 Deformation Mechanism and Support Technology of Deep and High-Stress Soft Rock Roadway

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Lujing Zheng ◽  
Yujun Zuo ◽  
Yafei Hu ◽  
Wei Wu
Keyword(s):  
Mechanical Properties ◽  
Bearing Capacity ◽  
High Stress ◽  
Soft Rock ◽  
Physical And Mechanical Properties ◽  
Surrounding Rock ◽  
Rock Fragmentation ◽  
The Stability ◽  
Soft Rock Roadway ◽  
Rock Roadway

In this study, the analysis and control of stability of surrounding rock in deep fractured soft rock roadway located in the underground mine of Jinfeng gold mine in Guizhou Province, China, has been investigated. The surrounding rock of roadway has been analyzed to characterize its deformation and failure mechanism through field survey, testing of rock physical and mechanical properties, in situ stress measure, analysis of mineral components of rock, and investigation of rock fragmentation degree. Based on the numerical simulation technology, the influence of different factors on the stability of roadway is studied. The physical and mechanical properties of surrounding rock and the bearing capacity of surrounding rock layer are to be improved to maintain the stability of broken soft rock roadway as high ground stress, rock fragmentation, and poor lithology leading to tunnel instability. Hence, a high-strength “cable bolt + fiber-reinforced shotcrete + steel mesh + split sets + resin bolt + cement grouting” combined support system has been proposed to improve the effective bearing structure significantly with high integrity and bearing capacity.

Mechanism and support measures of floor heave mainly caused by horizontal extrusion stress in soft rock roadway

2010 ◽  
pp. 387-394
Author(s):  
Yang Xiaojie ◽  
Wang Fuqiang ◽  
Guo Zhibiao ◽  
Han Qiaoyun ◽  
Zhang Zhao ◽  
...  
Keyword(s):  
Soft Rock ◽  
Support Measures ◽  
Floor Heave ◽  
Soft Rock Roadway ◽  
Rock Roadway
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