Ningxia Tongxin County Geological Disaster Investigation And Regionalization

Paper based on the? ningxia tongxin county geological disaster investigation and regionalization? project,on the basis of fully certain radioactive-polluted area related information collection,through detailed field investigation and indoor comprehensive analysis and research,the geological disaster in ningxia area county(city)of the geological hazard investigation and study,the purpose is to identify areas prone to geological disasters and the danger zone,establishing geological hazard information system,to establish a group of dedicated monitoring network to do a good job of foundation,in a planned way to carry out the prevention and control of geological disasters,reduce disaster losses,protect people's life and property safety,weaves and into.Tongxin county is located in the central part of ningxia hui autonomous region,with a total area of 4445.5km~2 and a population of 325097.The survey covers 4445.5km~2,covering 10 townships and 221 villages in tongxin county.There were 105 survey points and 67 potential geological hazards.The types of geological disasters in tongxin county were identified as landslide,collapse,debris flow and unstable slopes,including 34 landslides,18 collapses,14 debris flows and 1 unstable slope.Identify 13 potential geological hazards;It is found that the formation of geological disasters in tongxin county is mainly affected by topography and geomorphology,hydrology and meteorology,earthquake,structure and human activities.The spatial and temporal distribution pattern and scale of geological disasters development in tongxin county were found out.According to this,the geographical disaster vulnerability was divided into five high risk areas,three medium risk areas and three low risk areas.The degree of damage and threat target of potential geological disaster are fully and reasonably predicted.On the basis of the division of geological disaster prone areas,combined with the disaster degree and administrative division of geological disasters,the division of geological disaster prevention and control is divided into 6 key prevention and control areas,3 sub-key prevention and control areas and 3 general prevention and control areas,and specific prevention and control measures are proposed.To make a preliminary evaluation of the danger and danger of important geological disaster spots and put forward countermeasures and Suggestions,which laid a foundation for the formulation of disaster prevention plans.