Analysis of Early Warning Characteristics of Small and Medium-sized Soil Landslide Induced by Rainfall——A Case Study of Wujia Community Landslide in Yushan County in Jiangxi
Small and medium-sized soil layer landslide are widely distributed in Shangrao City and even throughout Jiangxi Province,because of its sudden strong,it is difficult to prevent,to the safety of people's lives and property has caused a serious threat.Rain is the main cause of the landslide slide,in order to better explore the landslide sliding mechanism and early warning forecast,this paper as the research object,using the Jiangxi geological disaster monitoring system of landslide fracture displacement,rainfall,soil moisture content data,from the external and internal landslide,studied the landslide crack displacement and daily effective rainfall correla-tion and soil moisture content change rule.The results show that in the later period of landslide change develop-ment,the landslide deformation is highly correlated with the daily rainfall,followed by the effective rainfall in the previous 2 days.In terms of soil moisture content,there is a quadratic function between the depth of soil lay-er and the moisture content.The change law of the moisture content of soil layer at different depths can be used as a basis for judging whether the landslide is in the imminent slip stage.
Rainfall-type landslideDeformationCorrelationMonitoring and warning
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