Distribution Characteristic and Countermeasures of Geo-hazards Induced by 8?30 Earthquake in Huili County of Sichuan Province

ZHAO Wanyu; CHEN Xiaoqing; YOU Yong; CHEN Xingchang; ZHUANG Jianqi

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Distribution Characteristic and Countermeasures of Geo-hazards Induced by 8?30 Earthquake in Huili County of Sichuan Province

- Distribution Characteristic and Countermeasures of Geo-hazards Induced by 8?30 Earthquake in Huili County of Sichuan Province
- Bulletin of Soiland Water Conservation Vol. 29, Issue 4, Pages: 143-147(2010)
- 作者机构：
  
  1. 中国科学院水利部成都山地灾害与环境研究所中国科学院山地灾害与地表过程重点实验室,四川,成都,610041
  2. 中国科学院研究生院,北京,100049
- 作者简介：
- 基金信息：
- DOI：
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- Published：2010
- 稿件说明：
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ZHAO Wanyu, CHEN Xiaoqing, YOU Yong, et al. Distribution Characteristic and Countermeasures of Geo-hazards Induced by 8?30 Earthquake in Huili County of Sichuan Province[J]. Bulletin of Soiland Water Conservation, 2010, 29(4): 143-147.
DOI：

ZHAO Wanyu, CHEN Xiaoqing, YOU Yong, et al. Distribution Characteristic and Countermeasures of Geo-hazards Induced by 8?30 Earthquake in Huili County of Sichuan Province[J]. Bulletin of Soiland Water Conservation, 2010, 29(4): 143-147. DOI：

摘要

四川省会理县的地貌条件、地质条件和水文气象条件为地质灾害发育提供了良好基础

县域内地质灾害频繁。2008年8月30日("8.30")地震不仅加剧了原有的地质灾害

而且还引发了多处新的地质灾害点。通过发放地质灾害普查表、典型区域的遥感调查和重点区域的专家详查等调查方法

获得地震诱发的新增地质灾害隐患点55处

其中崩塌8处、滑坡25处、泥石流2处和不稳定斜坡20处

新增灾害点主要集中在县域南部高山峡谷区

特别是沿金沙江一带。根据震后地质灾害的调查结果

以2km×2km为单元格对县域内地质灾害易发程度进行分区

主要分为三级地质灾害易发区:高易发区、中易发区、低易发区

分别占全县总面积的42.4%

37.1%

20.5%。最后

提出了建立群测群防网络及监测预警系统实施全面防灾、突发性地质灾害实施紧急防治、重要地质灾害隐患点实施综合防治、加强地质环境管理和实施预防减灾等防治对策。

Abstract

Due to complex geological

geomorphic

and hydro-meteorological conditions

numerous geo-hazards occur in Huili County. The "8?30" earthquake induced a large number of new geo-hazards

as well as the intensification of old hazards in Huili County. With the help of sending geo-hazard census list

remote sensing

and expert inquiry

55 new geo-hazards triggered by the "8?30" earthquake are identified

including 8 rock-falls

25 landslides

2 debris-flows

and 20 unstable slopes

which are mostly in the south of the county

particularly in the region of Chinsha River. Based on the results from survey

the zoning on susceptibility level of geological disasters in Huili County is made in a unit grid of 2 km×2 km. The areas of high-susceptibility

mid-susceptibility

and low-susceptibility occupy 42.4%

37.1%

and 20.5% of the total area of the county

respectively. Additionally

some countermeasures are proposed

including setting a network of disaster prevention and mitigation

making the emergency treatment of some sudden hazards or the comprehensive treatment of important geological hazards

and enhancing the preventive management of geo-environmental disasters.

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