QUANTITATIVE EVALUATION OF CRUSTAL STABILITY ALONG THE BAOSHAN-RUILI SECTION OF DALI-RUILI RAILWAY AND ITS ADJACENT REGION

GUO Chang-bao; ZHANG Yong-shuang; QU Ke; XIONG Tan-yu; FU Xiao-xiao; DU Yu-ben

2014 Vol. 20, No. 1

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GUO Chang-bao, ZHANG Yong-shuang, QU Ke, XIONG Tan-yu, FU Xiao-xiao, DU Yu-ben. QUANTITATIVE EVALUATION OF CRUSTAL STABILITY ALONG THE BAOSHAN-RUILI SECTION OF DALI-RUILI RAILWAY AND ITS ADJACENT REGION[J]. Journal of Geomechanics, 2014, 20(1): 70-81.

Citation:

QUANTITATIVE EVALUATION OF CRUSTAL STABILITY ALONG THE BAOSHAN-RUILI SECTION OF DALI-RUILI RAILWAY AND ITS ADJACENT REGION

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
2.
Key Laboratory of Neotectonic Movement and Geohazard, Ministry of Land and Resources, Beijing 100081, China
3.
China Railway Eryuan Engineering Group Co. Ltd., Chengdu 610031, China

Received Date: 12 November 2013

Publish Date: 25 March 2014

Abstract

Abstract

The Dali-Ruili Railway is located near the India and Eurasian plate's collision belt, where the geologic structure conditions are very complicated. The railway planning and constructions are restricted by the complex engineering geological problems related to the crustal stability, such as active fault, high geo-stress, rock burst of deep tunnel, large deformation of soft rock. This paper make the crustal stability zoning assessment on the basis of crustal stability influencing factors analysis, including the geological background, new tectonic movement, crust uplift rates, potential seismic source area analysis, tectonic stress field, engineering geological characteristics of rock and soil mass, as well as the geological hazards characteristics. The AHP method based on GIS was used in the analyzing process. As a result, the crustal stability is divided into 4 grades: stable area, relatively-stable area, relatively unstable area and unstable area. 88 zoning sections are made along the Baoshan-Ruili section of Dali-Ruili Railway and its adjacent region. According to the zoning result, there are 19 crustal stability zoning sections along the recommended C12K scheme, including 9.79% of unstable area, 46.71% of relatively unstable area, 36.7% of relatively-stable area, and 6.18% of stable area. The regional crustal stability assessments have some important significance for the railway construction and line optimization.
- Dali-Ruili railway /
- Mt. Gaoligong /
- active faults /
- regional crustal stability /
- railway location research

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References

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