Geology Disaster Prevention And Weather Warning Of The Yanchang County

The thesis combined with 'detailed investigation of geological hazards in Yan'an of Shanxi Province', which issued by Geological Survey Bureau of China in 2007. Base on the detailed investigation and laboratory work, the type of geological hazards in Yan Chang County were measured. The development characteristics and distribution of geological hazards were summed up. The development characteristics and distribution of geological hazards were summed up and measures to the prevention of geological disasters were proposed. Finally, the paper sings meteorological early warning of geological disasters.Through the collation of information on the survey Statistics know: the geologicalhazards in Yan Chang County are divided into four types: unstable slopes,landslides,collapses,mudslides hidden dangers. Base on the status analysis, geological hazards mainlydeveloped in the northwest and distributed uneven in Yan Chang County. There is very little development of geological hazards in the southeast of Yan Chang County. Hazard points are almost medium and small size. The major geological hazard types caused harm to human is collapses and unstable slopes. The hazard points are mainly caused by human. It was verified initially that geological hazard regions are affected by terrain and landform in distributed rule, are developed mainly in the western loess run-off ditch and the area between loess ditch in space, they were distributed in laminate way, some were distributed in strip way along the valley terrace; also they were developed in the precipitation centralized year and every June to September in time.According to the geological characteristics of the environment and geological disasters, in the principle of people-oriented, under the guidance of a geological disaster prevention and environmental protection, engineering and biological measures to control the combination of measures and so on. In the prevention and control of geological disasters, including the collapse of the 26 landslides and unstable slopes of the major disasters, including potential points of control districts. In the example, the drainage holes on the North to do two specific landslide prevention and treatment program, by comparing the drainage hole to draw the North landslide better prevention and treatment programs.Finally, the extension of geological disasters in the county and weather conditions occurred in the comparative analysis to determine the occurrence of geological disasters in the rainfall characteristics of the critical value, further geological disasters in the county weatherwarning.