Detailed Investigation And Monitoring And Warning Of Geological Hazards In A Coastal County

A county is located in the southeast coast,affected by various factors,frequent geological hazards,and has a regional,mass,sudden and secondary characteristics.In view of these characteristics,the use of remote sensing,field investigation and mapping,geological survey and other technical means,the county launched a detailed investigation of geological hazards.In this paper,the geological hazard investigation and monitoring and early warning are carried out.(1)According to the previous geological hazard survey data of the county,combined with the county's natural geography and geological environment conditions,the analysis of the county's geological disasters and the formation of natural factors.Summarize the characteristics of the development of geological disasters in the county and the main problems facing the geological disasters in the county.According to the relevant rules,the main geological disasters in the county are analyzed as landslide,collapse,debris flow and unstable slope.The detailed investigation methods include data collection,remote sensing survey,ground investigation and investigation.(2)Through the detailed results of geological disasters in the county,the current geological hazard types and distribution laws of the county are analyzed.The geological disasters of the county mainly occur in the rainy season from May to August each year,and the area is obvious.Geological hazard risk points for the risk assessment,the county geological hazards to the main risk of small and medium-sized;the use of geological hazard comprehensive risk index method,the use of MapGIS software,the county geological disaster prone to partition,divided into two High prone area,one prone area,three low prone area,two easy to send area;introduced the county database system system framework,database software structure and system functions.(3)the monitoring and early warning of the geological disasters in the county,and put forward preventive measures;the establishment of group test group early warning system;meteorological early warning zoning;the stability of this survey qualitative determination of poor stability of the geological disaster point and unstable slope point selection Merged into county-level,town-level,village-level three monitoring points;given different types of disaster early warning and forecasting content and methods,to control the zoning,given control measures;the typical landslide,collapse and unstable slope disaster point To carry out analysis and evaluation,put forward the corresponding prevention and control measures.