RESULTS OF ROCK STRESS MEASUREMENTS AND ENGINEERING APPLICATION OF A RAILWAY TUNNEL IN NORTHWESTERN YUNNAN

LI Jin-suo; PENG Hua; Cui Wei; MA Xiu-min; YANG Shao-xi; LIAO Jian-she

Volume 11 Issue 2

Jun. 2005

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Article Navigation > Journal of Geomechanics > 2005 > 11(2): 135-144

LI Jin-suo, PENG Hua, Cui Wei, et al., 2005. RESULTS OF ROCK STRESS MEASUREMENTS AND ENGINEERING APPLICATION OF A RAILWAY TUNNEL IN NORTHWESTERN YUNNAN. Journal of Geomechanics, 11 (2): 135-144.

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LI Jin-suo, PENG Hua, Cui Wei, et al., 2005. RESULTS OF ROCK STRESS MEASUREMENTS AND ENGINEERING APPLICATION OF A RAILWAY TUNNEL IN NORTHWESTERN YUNNAN. Journal of Geomechanics, 11 (2): 135-144.

Citation:

LI Jin-suo, PENG Hua, Cui Wei, et al., 2005. RESULTS OF ROCK STRESS MEASUREMENTS AND ENGINEERING APPLICATION OF A RAILWAY TUNNEL IN NORTHWESTERN YUNNAN. Journal of Geomechanics, 11 (2): 135-144.

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RESULTS OF ROCK STRESS MEASUREMENTS AND ENGINEERING APPLICATION OF A RAILWAY TUNNEL IN NORTHWESTERN YUNNAN

1. Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081;
2. Sichuan Southwest Dadi Engineering Geophysical Exploration Company, Chengdu 610072, Sichuan;
3. China Huashui Hydropower Development Corporation, Beijing 100054

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Abstract

Abstract

Rock stress state in situ is determined by the hydrofracturing method for rock stress measurement in a railway tunnel in northwestern Yunnan.According to the distribution features of the rock stress,combined with the mechanical parameters of the tunnel wall rocks,the stress filed in the tunnel area is simulated by using the three-dimensional finite elements.According to the in-situ stress measurements and three-dimensional finite element calculation,the basic features and distribution of the rock stress in engineering area are given,and the possibility of occurrence of geological hazards such as rock bursts during excavation of the tunnel is analyzed.Furthermore,the scientific basis for the lining design of the tunnel,choice of the tunnel's cross-section and determination of the axial direction of the tunnel is provided.
- rock stress,
- three-dimensional finite element,
- geological hazard

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RESULTS OF ROCK STRESS MEASUREMENTS AND ENGINEERING APPLICATION OF A RAILWAY TUNNEL IN NORTHWESTERN YUNNAN

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