Volume 19 Issue 1
Feb.  2011
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WANG Yanlin, ZHAO Fasuo, HAO Junqing. 2011: CHARACTERISTIC OF GEO-HAZARD IN SHAANXI PROVINCE BY WENCHUAN EARTHQUAKE. JOURNAL OF ENGINEERING GEOLOGY, 19(1): 52-58.
Citation: WANG Yanlin, ZHAO Fasuo, HAO Junqing. 2011: CHARACTERISTIC OF GEO-HAZARD IN SHAANXI PROVINCE BY WENCHUAN EARTHQUAKE. JOURNAL OF ENGINEERING GEOLOGY, 19(1): 52-58.

CHARACTERISTIC OF GEO-HAZARD IN SHAANXI PROVINCE BY WENCHUAN EARTHQUAKE

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  • Received Date: 2010-03-08
  • Rev Recd Date: 2010-05-25
  • Publish Date: 2011-02-25
  • Based on materials of field investigation and geological hazard situation inspection after wenchuan earthquake,in this paper,from the aspects of geological hazard case and dangerous case,the author analyze case distribution,type,grade of geo-hazard triggered by Wenchuan earthquake. Furthermore the author give an evaluation of geo-hazard triggered by Wenchuan earthquake in shaanxi province compared with in Sichuan and Gansu province,in the end trend of geo-hazard in shaanxi province is predicted preliminary. Wenchuan earthquake causes geological hazard of 302 cases in Shaanxi province. The distribution of those geological hazard is chiefly in Baoji City,Hanzhong City,Xianyang City and Shangluo City,those geological hazard lead to two people dead and 13 injuries and great direct economic loss. Geological hazard case type is mainly landslide,which proportion is 85.7% in the whole of the geological hazard case type proportion. Geo-hazard case grade is mainly small grade of geological hazard,however middle grade of geological hazard lead to main direct economic loss. Geological hazard-causing object is mainly settlement and secondly institution and schools. Geological hazard danger cases caused by Wenchuan earthquake is chiefly in Hanzhong City,Baoji City,Xianyang City and Ankang City. Geological hazard danger case type is mainly landslide. and geological hazard danger case grade is mainly small grade. Geological hazard causing object is mainly settlement and secondly institution and schools also. The geological hazard case and danger cases have the following five characteristics:First,geological hazard and danger case mainly distributes the extension of Longmenshan Mountain geological structure,and the distribution of danger cases is more widely than the distribution of geological hazard. Second,geological hazard case type is mainly landslides. Third,geological hazard-causing object is mainly institution and schools,which is also prevention and control emphasis of geological hazard in the future. Fourth,small grade of geological hazard cases is the largest in all hazard cases. Fifth,relation of geological hazards in scale and geological hazard grade is the U shaped relationship. Damage caused in Shaanxi province by Wenchuan earthquake is relatively light than which of Sichuan and Gansu province.Shaanxi province is one of serious provinces in geological hazard,so the frequency of geological hazards could be increased in the future. Two suggestions of deepening research of geological hazard are taken out,one is to further enhance the analysis of geological structure and earthquake and geological hazard,and two is strengthening the rule and characteristics of the geological hazard.
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