Results 211 to 220 of about 16,431 (261)

Study on the Deformation and Stability of Surrounding Rock

Applied Mechanics and Materials, 2012
To rely on nuclear power plant water tunnel project, through the numerical simulation methods, we analysized the extent of rock deformation and stability of the process of excavation and supporting to reveal the deformation near the working face of rock tunnel.The research results show: When carrying out tunnel excavation, the plastic deformation zone ...
Sheng Ji Jin, Yong Qin Rui, Zhe Shu
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Application of Catastrophe Theory in Surrounding Rock Stability

Advanced Materials Research, 2013
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 ...
Din Ge Kong, Kai Hu
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Analysis and evaluation on stability of the tunnel surrounding rock

2011 International Conference on Electric Technology and Civil Engineering (ICETCE), 2011
One tunnel located in the north east of Ping Ding Shan city be used to put 5 steel pipes for transporting cinder of the power plant in the city. The tunnel region is just the mining coal subsidence area., so the surrounding rock stability of the tunnel is complicated problem because of strata displacement and subsidence because of mining coal.
null Yao Jinjie, null Wang Guizhu
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Face Stability and Reinforcement of the Tunnel in Weak Surrounding Rock

Geotechnical and Geological Engineering, 2020
According to the influence of surrounding rock levels and buried depths on the face stability of the tunnel. A stability analysis model of the full-face tunnel with weak surrounding rock is established based on the finite element method (FEM) and the Drucker-Prager yield criterion.
Xuxin Chen, Ping He, Dumin Yan, Aoxiang Nie   +3 more
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Influence of Rock Burst and Other Disasters on Stability of Surrounding Rock of Roadway

Geotechnical and Geological Engineering, 2017
In this paper, selecting 3 levels and 6 factors with an orthogonal test approach to investigate the stability of roadway surrounding rock under dynamic disturbance. The intuitive analysis results show that the main factors that affect the roadway deformation is period, followed by the location, lateral pressure coefficient, amplitude and buried depth ...
Yushun Yang, Sijiang Wei, Dongming Zhang
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Sensitivity analysis of rock mechanics parameters in stability of tunnel surrounding rock

Energy Sources, Part A: Recovery, Utilization, and Environmental Effects, 2019
In this paper, we adopted the orthogonal numerical test method to study the effect of rock mass parameters on horizontal convergence, roof-to-floor convergence and plastic zone factor with select s...
Yushun Yang, Dongming Zhang, Xi Chen, Yong Zhao   +3 more
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Stability Analysis of Surrounding Rock Based on QGA-SVM

Advanced Materials Research, 2014
In order to analyze the stability of surrounding rock accurately and effectively, a rock classification method based on QGA (quantum genetic algorithm)-SVM (support vector machine) is put forward. QGA was used for global search in the solution space to optimize the kernel function parameters of SVM.
Fu Dong Xie, Wei Min Yang, Dao Hong Qiu, Yi Li   +3 more
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Optimization of monitoring the stability of surrounding rock in a metal mine

International Journal of Minerals, Metallurgy and Materials, 2009
Through analyzing the failure mechanics of rock under blasting effect, the optical fiber sensing system was used to monitor the strain of surrounding rock under blasting effect. Combined with practical exploration, the stability of surrounding rock was computed by numerical simulation using the blasting wave obtained from the site.
Bo Song, Min Zhong, Xin Dong, Pei-fu Wang   +3 more
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Stability of NATM tunnel faces in soft surrounding rocks

Computers and Geotechnics, 2018
Abstract NATM (new Austrian tunneling method) tunnel construction is unable to proceed under instable states of working face, so the stability of working face has been regarded as a key scientific issue. In this paper, a horizontal slice method based on the limit equilibrium analysis theory is employed to establish a model for the tunnel face ...
Zhiqiang Zhang, Xiaoquan Shi, Bo Wang, Huayun Li   +3 more
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