MULTI-SCALE LANDSLIDE HAZARD ASSESSMENT FOR KEY SECTION OF CHENGDU-LANZHOU RAILWAY, WENCHUAN SEISMIC REGION

WANG Tao; HU Qiu-yun; ZHANG Yong-shuang; WU Shu-ren; XIN Peng

2014 Vol. 20, No. 4

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Article navigation > Journal of Geomechanics > 2014 > 20(4): 379-391

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WANG Tao, HU Qiu-yun, ZHANG Yong-shuang, WU Shu-ren, XIN Peng. MULTI-SCALE LANDSLIDE HAZARD ASSESSMENT FOR KEY SECTION OF CHENGDU-LANZHOU RAILWAY, WENCHUAN SEISMIC REGION[J]. Journal of Geomechanics, 2014, 20(4): 379-391.

Citation:

MULTI-SCALE LANDSLIDE HAZARD ASSESSMENT FOR KEY SECTION OF CHENGDU-LANZHOU RAILWAY, WENCHUAN SEISMIC REGION

1.
Institute of Geomechanics, Chinese Academy of Geological Sciences, Beijing 100081, China
2.
Key Laboratory of Neotectonics Movement & Geohazards, Ministry of Land and Mineral Resources, Beijing 100081, China
3.
China Geological Survey, Beijing 100037, China

Received Date: 13 August 2014

Publish Date: 25 December 2017

Abstract

Abstract

Taking Longmenshan key section of Chengdu-Lanzhou railway in Wenchuan seismic region as an example, we explore a sort of multi-scale landslide hazard assessing method for major project site in strong earthquake afflicted area. The spatial distribution characteristics of coseismic landslides induced by Wenchuan M_s 8.0 earthquake are inverted assessed with information value model. On this basis, landslide hazard assessments in regional and local scale are carried out. In regional railway corridor scale, the temporal and spatial distribution of daily maximum precipitation of 10% exceedance probability is predicted by Probable Maximum Precipitation method. Due to such probable precipitation, the landslide hazard is assessed with information value model. Also, combining seismic hazard zoning result, the landslide hazard is assessed due to basic earthquake ground motion of 10% exceedance probability in 50 years. In local railway station scale, with Rockfall Analyst software based on rolling stone kinematics simulation, runout characteristics and hazard of rockfall around Shiziyuan bridge site are simulated and assessed. All of the landslide and rockfall hazard assessment results above provide geological safety references in different scales for railway plan and line selection, site landslide defense design respectively.
- Wenchuan /
- seismic region /
- landslide /
- multi-scale /
- hazard /
- Chengdu-Lanzhou railway

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References

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