Characteristics And Causes Of Geological Hazards In Shaxian County

Fujian Province,located in the southeast coastal area,is a province with complex geological conditions.Due to the fact that there are many mountains,few plains,large slopes,and residual slopes,the thickness of the slope is large,and the phenomenon of slope construction is distributed in all counties and cities of the province.In addition,there are many typhoons,heavy rains and sudden heavy rainfall in the summer,which lead to many disasters such as landslides,collapses,mudslides,and ground collapses.Shaxian County has been affected by geological disasters during its long development.Therefore,the research work on geological disasters in this region has been highly valued by the municipal government and the county government.Shaxian area has made regional geology,mineral geology,hydrogeological research.In recent years,we have made some work on environmental geology and disaster geology.The main purpose of this work is based on the detailed investigation of geological disasters in the Shaxian area,analyze the overall characteristics of major geological hazards,and study the relationship between major hazards and environmental factors.At the same time,the prevention and control of geological disasters will be achieved based on relevant research results,which will provide favorable basis for disaster prevention and reduction in the Shaxian region.After corresponding field investigations and related analysis,the major disasters in Shaxian County were landslides,collapses,unstable slopes,mudslides and ground collapses totaling 300(hazardous),where the number of landslides is 165,which is 55%;the number of collapses is100,which is 33.33%;the number of unstable slopes is 32,which is 10.67%;and there are two debris flows,and one land subsidence.Based on the work in the field,this paper has initially revealed the distribution characteristics and laws of geological conditions and geological hazards in Shaxian County through indoor statistical data.According to relevant research,the main controlling factors and precipitating factors of geological disasters in Shaxian are topography,geomorphology,geological structure,precipitation,groundwater,and comprehensively analyses the relationship between landslides,collapses,unstable slopes,debris flows,and ground subsidence has been made with these environmental factors.At the same time,using the data from geological hazard surveys in Shaxian County,the geological disaster database,spatial graphics library,and multimedia database were established to manage the spatial information and attribute information of geological disasters.In particular,the establishment of early warning and disaster prevention systems for geological hazards is based on a comprehensive analysis of the typical geological hazards and the full integration of urban rainfall and hydrological real-time data,which provides the basis for the group prevention and inspection of geological disasters in the Shaxian area.In addition,combined with the assessment of geological hazards in Shaxian County,geological disaster prevention measures and recommendations in the area were proposed,and for the local government to establish and monitor the perfect combination of the network,a planned geological disaster prevention and control,reduce disaster losses,protect the safety of people's lives and property,thus providing a certain basis for geological disaster protection.