Risk Assessment of the Heiniwan Landslide in Hongkou County, Sichuan Province

FENG Li; ZHANG Mao-sheng; ZHANG Cheng-hang; GE Rui-hua; ZHANG Jiang-long

Northwestern Geology > 2014 > 47(3): 165-176.

FENG Li, ZHANG Mao-sheng, ZHANG Cheng-hang, et al. Risk Assessment of the Heiniwan Landslide in Hongkou County, Sichuan Province[J]. Northwestern Geology, 2014, 47(3): 165-176.

Citation:

FENG Li, ZHANG Mao-sheng, ZHANG Cheng-hang, et al. Risk Assessment of the Heiniwan Landslide in Hongkou County, Sichuan Province[J]. Northwestern Geology, 2014, 47(3): 165-176.

Citation:

FENG Li, ZHANG Mao-sheng, ZHANG Cheng-hang, et al. Risk Assessment of the Heiniwan Landslide in Hongkou County, Sichuan Province[J]. Northwestern Geology, 2014, 47(3): 165-176.

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Risk Assessment of the Heiniwan Landslide in Hongkou County, Sichuan Province

1. Department of Geology. Northwest University, Xi'an 710069, China;
2. Key Laboratory for Geo-hazards in Loess Area, MLR, Xi'an Center of Geological Survey, China Geological Survey, Xi'an 710054, China

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Received Date: October 07, 2013
Revised Date: July 14, 2014
Available Online: July 28, 2022
Published Date: September 04, 2014

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Abstract

Abstract

Based on stability calculations of multistage potential sliding surface of Heiniwan landslide which caused by heavy rain in July 2013, risk assessment, risk zoning, and the evaluation of the social risk were respectively completed under three different conditions in this paper, namely heaviest rainfall in ten years, in fifty years and in a hundred years. After the superposition of single life risk, the risk map was finished. With the connection of the landslide social risk, the social risk of Heiniwan landslide was evaluated. The maximum property risk is 1,116,660 RMB per year, while the maximum population at risk is 0.00223 a person per year. At the same time, division results show that danger zone ①, ②, ③have the greatest single life at risk, which is more than 10^-3 life at risk; compared to international risk tolerance standard (F-N curve), the social risk value cannot be accepted. Therefore, it is necessary for local governments to strengthen such work as monitoring, relocation of local inhabitants and appropriate engineering control to avoid the risk.
- landslide,
- stability,
- vulnerability,
- risk assessment,
- risk value

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Risk Assessment of the Heiniwan Landslide in Hongkou County, Sichuan Province

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