Types and their characteristics of geological hazards triggered by “6·17” earthquake in Changning, Sichuan Province

The epicenter of the M_s6.0 earthquake occurred near Shuanghe Town in the southeast of Changning County, Yibin, Sichuan Province On June 17, 2019 is with the intensity of VIII degree. Immediately after the earthquake, field investigation of geological disasters were conducted, and it was found that Changning County and Gongxian County were greatly affected by the earthquake, while other districts and counties were slightly impacted. Based on the survey before and after the earthquake in three districts and seven counties in Yibin City, combined with the seismic intensity map and news articles issued by Sichuan Provincial Seismological Bureau, the development and distribution characteristics of post earthquake geological disasters in different seismic intensity areas, are as follows: ① The magnitude of the “6·17” earthquake in Changning, Yibin is 6.0, and the order of magnitude is 6.0. But there are many kinds of geological disasters. ②New geological hazards mainly distributed in Shuanghe Town, Changning County. The density of geological hazards in high intensity area is much larger than that in low intensity area. ③ The potential disaster points increased in high intensity areas, but slightly increase in medium intensity areas and had no change in low intensity areas. The conclusion of this paper could be reference for Sichuan Province, especially for the emergency relief, construction planning and geological disaster prevention and control.