The Risk Assessment Of Debris Flow In Miyun Northwest Mountain

In this paper, a detailed field investigation on Shicheng town of Miyun county, fengjiayu Town and Bulaotun town Banchengzi region, make full use of available information, and identified the types of geological disasters, distribution, scale and its affecting factors and contributing factors. Hidden points of the debris flow hazard degree of risk and a comprehensive evaluation, given the importance of prevention and treatment recommendations. Main results obtained are as follows:1 A comprehensive summary of the work status of geological hazards, identified the type of geological hazards, the distribution, the harmful levels, the formation conditions and influencing factors. The preparation of the status of the three townships map of geological disasters.2 The work to determine 39 the risk of the villages, 5 tourist attraction, 15 dangerous road. Identified this area as the most important types of geological disasters is debris flow, followed by collapse.3 The work on the basis of comprehensive investigation to determine the existence of hidden danger of debris flow disaster ditch 38. And the use of AHP for each of the regional body of the risk of geological hazards were evaluated, divided into a general risk, more dangerous, dangerous three different risk levels. There are 38 evaluation of disaster risks of debris flow ,3 general dangerous, 29 more dangerous, 6 dangerous.4 Make the the risk assessment in this area for each geological disaster. Determined the Disaster types of key Prevention , Residential , Attractions and Engineering facilities. Point to important geological disaster monitoring and prevention recommendations.5 Providing Basis of Disaster prevention , land development and regulation, economic and social development planning and supervision and management of geological disasters in study area.