Control Technology and Simulation Study of Floor Heave in High Stress Soft Rock Roadway

2020 ◽  
Vol 38 (4) ◽  
pp. 4045-4058
Author(s):  
Laizheng Xu ◽  
Sijiang Wei
Keyword(s):  
Simulation Study ◽  
High Stress ◽  
Soft Rock ◽  
Control Technology ◽  
Floor Heave ◽  
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.

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

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

Study on Surrounding Rock Deformation Characteristics and Control Technology in Deep Soft Rock Roadway

2012 ◽  
Vol 594-597 ◽  
pp. 631-635 ◽  
Author(s):  
Wen Hua Zha ◽  
Xin Zhu Hua
Keyword(s):  
Soft Rock ◽  
Surrounding Rock ◽  
Control Technology ◽  
Deformation Characteristics ◽  
Control Effect ◽  
Tunnel Support ◽  
Technical Problems ◽  
Geological Conditions ◽  
Soft Rock Roadway ◽  
Rock Roadway

To explore support technical problems in deep soft rock roadway, according to deep complicated geological conditions in 102 transport rise of Yuandian Mine, obtaining deformation characteristics of roadway in the initial support scheme under conditions, analysing the reasons of instability and failure of surrounding rock, proposing the surrounding rock control technology of step-by-step strengthen co-supporting, determining secondary anchor cable strengthen support time and grouting delay distance, optimizing the parameters of roadway support. Industrial practice show that the control effect of deformation was obvious,which provide the reference for deep soft rock tunnel support decision.

Floor Heave Controlling Technology of Deep Soft Rock Roadway

2012 ◽  
Vol 170-173 ◽  
pp. 68-71 ◽  
Author(s):  
Zhan Jin Li ◽  
Shi Bo Li ◽  
Xue Li Zhao
Keyword(s):  
Soft Rock ◽  
Engineering Practice ◽  
Bending Rigidity ◽  
Line Field ◽  
Floor Heave ◽  
Simulation Results ◽  
Soft Rock Roadway ◽  
Adjacent Rock ◽  
Coupling Support ◽  
Rock Roadway

The floor heave is one of soft rock roadway distortion. Based on soft rock supporting theory and engineering practice, the program bolt-mesh-anchors and floor corner, bolts coupling support to control floor heave of the soft rock roadway is proposed. Numerical simulation results show that bolt-anchors can mobilize the strength of the deep adjacent rock, at the same time, and properly arranged floor corner bolts with high bending rigidity can cut the slip-line field and achieve the goal of controlling floor heave effectively.

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