Study & Design on Hanging Assembly Supporting Structure in the Underground Roadway

2012 ◽  
Vol 256-259 ◽  
pp. 1312-1315
Author(s):  
Hong Li Wang ◽  
Xian Tang Zhang ◽  
Wei Bao ◽  
Hu Xiu
Keyword(s):  
Failure Mechanism ◽  
Study Design ◽  
Surrounding Rock ◽  
Underground Engineering ◽  
Underground Tunnel ◽  
Supporting Structure ◽  
Rock Stability ◽  
Underground Roadway ◽  
Roadway Support

Based on a large number of surrounding rock stability, it sums up the classification of surrounding rock, nature and failure mechanism in the underground engineering. This paper introduces a underground tunnel hanging assembly support, the supporting structure can effectively solve the problem of insufficient rigidity of the roadway support, and provide a supporting structure with a certain amount of shrinkage.

Application of Catastrophe Theory in Surrounding Rock Stability

2013 ◽  
Vol 712-715 ◽  
pp. 974-978
Author(s):  
Din Ge Kong ◽  
Kai Hu
Keyword(s):  
Catastrophe Theory ◽  
Surrounding Rock ◽  
Underground Engineering ◽  
Rock System ◽  
Instability Problem ◽  
Rock Stability ◽  
Highly Nonlinear ◽  
Practical Engineering ◽  
Simplified Mechanical Model ◽  
Catastrophic Model

Surrounding rock system of underground engineering is highly nonlinear, and there is no unified cognition for its stability criteria. Introduces the basic principle of catastrophe theory, focusing on the cusp catastrophic model, build a simplified mechanical model for the surrounding rock, and the instability of surrounding rock of the cusp catastrophic model is obtained. In practical engineering, it is show that catastrophe theory is an effective method to study the instability problem of the tunnel.

scholarly journals A Novel Model of the Ideal Point Method Coupled with Objective and Subjective Weighting Method for Evaluation of Surrounding Rock Stability

2016 ◽  
Vol 2016 ◽  
pp. 1-9 ◽  
Author(s):  
Yingchao Wang ◽  
Ning Zhao ◽  
Hongwen Jing ◽  
Bo Meng ◽  
Xin Yin
Keyword(s):  
Present Model ◽  
Ideal Point ◽  
Surrounding Rock ◽  
Point Method ◽  
Good Prospect ◽  
Weighting Method ◽  
Rock Classification ◽  
Rock Stability ◽  
The Ideal

The classification of surrounding rock stability is the critical problem in tunneling engineering. In order to decrease engineering disasters, the surrounding rock stability should be accurately evaluated. The ideal point method is applied to the classification of surrounding rock stability. Considering the complexity of surrounding rock classification, some factors such as rock uniaxial compressive strengthen, integrality coefficient of rock mass, the angle between tunnel axis and the main joint, joints condition, and seepage measurement of groundwater are selected as evaluation indices. The weight coefficients of these evaluation indices are determined by the objective and subjective weighting method, consisting with the delphi method and the information entropy theory. The objective and subjective weighting method is exact and reliable to determine the weights of evaluation indices, considering not only the expert’s experiences, but also objectivity of the field test data. A new composite model is established for evaluating the surrounding rock stability based on the ideal point method and the objective and subjective weighting method. The present model is applied to Beigu mountain tunnel in Jiangsu province, China. The result is in good agreement with practical situation of surrounding rock, which proves that the ideal point method used to classify the surrounding rock in tunnels is reasonable and effective. The present model is simple and has very strong operability, which possesses a good prospect of engineering application.

Analysis and Controlling of the Surrounding Rock Stability Mechanism in Underground Engineering

2012 ◽  
Vol 170-173 ◽  
pp. 29-32
Author(s):  
Xian Kai Bao ◽  
Guo Qiang Li
Keyword(s):  
Surrounding Rock ◽  
Control Methods ◽  
Underground Engineering ◽  
Rock Stability ◽  
Instability Modes ◽  
Engineering Practices

This thesis introduces various factors of surrounding rock stability mechanism and instability modes, indicates its control methods and thought. The achievements apply well in engineering practices and have good values and researches on surrounding rock stability have instructive significance in engineering execution.

Application Research of Rock Coupling Testing System for Underground Engineering in Sanshandao Gold Mine

2013 ◽  
Vol 405-408 ◽  
pp. 1360-1366
Author(s):  
Dong Ji ◽  
Chao Peng ◽  
Liang Zhao ◽  
Fen Hua Ren
Keyword(s):  
Field Testing ◽  
Evaluation Study ◽  
Surrounding Rock ◽  
Testing System ◽  
Gold Mine ◽  
Underground Engineering ◽  
Rock Stability ◽  
Deformation Law ◽  
Current Impact

Rock instability and failure disasters are now common engineering-geological problems of underground engineering. The evaluation of stability of surrounding rock is a complicated uncertainty system problem, which needs various different research means. Rock coupling testing system composed of loose circle testing section, convergence monitoring section and multipoint displacement monitoring section is arranged at-600m level of Sanshandao gold mine; deformation law of roadway surrounding rock is well studied through long-term field testing and monitoring work. Achieved application results reveal overall stability of rock mass in gold mine deep area is relatively good, current impact caused by roadway excavation is not obvious. Coupling testing system is engineering practicable, which can meet the demand of rock stability evaluation study of underground engineering in Sanshandao gold mine.

scholarly journals Surrounding Rock Stability Classification Method of Coal Roadway Based on In Situ Stress

2021 ◽  
Vol 2021 ◽  
pp. 1-11
Author(s):  
Yongjie Yang ◽  
Gang Huang ◽  
Lingren Meng
Keyword(s):  
Fuzzy Clustering ◽  
In Situ Stress ◽  
Surrounding Rock ◽  
Evaluation Indexes ◽  
Rock Stability ◽  
Coal Roadway ◽  
Fuzzy Clustering Method ◽  
Stability Classification

In situ stress is one of the most important factors affecting surrounding rock stability classification of coal roadway. Most surrounding rock stability classification methods do not fully consider the influence of in situ stress. In this paper, the author applied a fuzzy clustering method to the classification of surrounding rock stability of coal roadway. Taking into account the complexity of the classification of surrounding rock, some factors such as the strength of surrounding rock, in situ stress, the main roof first weighting interval, the size of the chain pillar, and the immediate roof backfilled ratio are selected as the evaluation indexes. The weight coefficients of these evaluation indexes are determined by unary regression and multiple regression methods. Using fuzzy clustering and empirical evaluation method, the classification model of surrounding rock stability of coal roadway is proposed, which is applied to 37 coal roadways of Zibo Mining Group Ltd., China. The result is in good agreement with practical situation of surrounding rock, which proves that the fuzzy clustering method used to classify the surrounding rock in coal roadway is reasonable and effective. The present model has important guiding significance for reasonably determining the stability category of surrounding rock and supporting design of coal roadway.

Research Status and Development Trends of Roadway Surrounding Rock Stability Classification

2014 ◽  
Vol 580-583 ◽  
pp. 1352-1357 ◽  
Author(s):  
Ren Liang Shan ◽  
Xiang Song Kong ◽  
Jian Liu ◽  
Jian Fang Li ◽  
Yao Bai ◽  
...  
Keyword(s):  
New Technology ◽  
Surrounding Rock ◽  
Development Trends ◽  
Research Status ◽  
New Methods ◽  
Rock Stability ◽  
Safe Production ◽  
Stability Classification

Stability classification of roadway surrounding rock is of great significance as the prerequisite of safe production in roadway engineering. Based on a great number of issues analysis, the research status of roadway surrounding rock stability classification has been dissected from aspects of classification indexes and methods. At the end, it has put forward that choosing scientific and reasonable indexes, applying combined technology with more than three methods, using new technology and new methods are the three development trends of roadway surrounding rock stability classification research.

Sign in / Sign up

Export Citation Format

Share Document