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PAN Yuangui, WU Zhonggeng, SUN Dong, et al. Analysis on the distributive characteristics and causes of the geological disasters induced by the “8·8” heavy rainstorm in Qu County, Sichuan Province[J]. The Chinese Journal of Geological Hazard and Control, 2022, 33(4): 125-133. DOI: 10.16031/j.cnki.issn.1003-8035.202203017
Citation: PAN Yuangui, WU Zhonggeng, SUN Dong, et al. Analysis on the distributive characteristics and causes of the geological disasters induced by the “8·8” heavy rainstorm in Qu County, Sichuan Province[J]. The Chinese Journal of Geological Hazard and Control, 2022, 33(4): 125-133. DOI: 10.16031/j.cnki.issn.1003-8035.202203017

Analysis on the distributive characteristics and causes of the geological disasters induced by the “8·8” heavy rainstorm in Qu County, Sichuan Province

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  • Received Date: March 09, 2022
  • Revised Date: May 27, 2022
  • Accepted Date: May 29, 2022
  • Available Online: July 11, 2022
  • On August 8, 2021, Quxian County was hit by a heavy rainstorm, causing 38 new disasters and aggravating 109 existing disasters to varying degrees. Based on field survey , this paper studies the characteristics of disasters caused by heavy rainstorms and the relationship between the hazard including and geological conditions and disaster distribution. The results show that: the new disaster points caused by the heavy rain in Quxian County are mainly soil landslides, accounting for 94.7%; the regional slope structure has the highest impact on the disaster occurrence; Soil landslides occurred in 300~325 mm accumulative rainfall range, up to 27 places; There are 23 disaster points with serious signs of aggravation of deformation, which are distributed in the range of accumulative rainfall of 337~348 mm; It can provide a scientific basis for the county’s geological disaster prevention and control zoning and flood season geological disaster prevention, and can provide a reference for disaster prevention and mitigation of geological disasters in similar areas with heavy rainstorms.
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