Study On The Location Of Escaping Space In Small Mountain City Based On Earthquake Risk Assessment

China is located in the world’s two seismic belt, it is the world’s most earthquake country, and our city level and above 62% of the seismic intensity of 7 degrees or more. The city is a national and social.development of the "locomotive", gathering a large number of demographic, social wealth and living and production facilities, when the earthquake occurred, people, economic losses are heavy, so the city emergency planning and disaster prevention sites construction becomes extremely important. For now, in the eastern part of our country developed areas, disaster prevention earthquake disaster prevention planning and emergency construction sites in cities have been more perfect; but in China accounted for more than half of the urban living environment of the mountain city, due to the harsh natural conditions and poor socio-economic development, urban earthquake disaster prevention planning done enough reasonable, there are many problems of urban emergency disaster prevention, unable to meet the demand. Thus, disaster prevention space mountains and small cities siting studies, having the necessity and urgency of this article Gengma County in Yunnan Province as an example chosen site Escaping space research.Based on this situation of our country, on the basis of summarizing the domestic and foreign research status places on disaster prevention, to conduct field research Gengma, Gengma eventually carried out on the status of disaster prevention space research location. First, the use of fuzzy comprehensive evaluation model for seismic risk assessment of Gengma County:the county roads in major cities in the limit, the whole county is divided into nine partitions, select each partition of the population density, building density, building vulnerability, road accessibility of existing disaster prevention and per capita space of the elements 6, by an expert to determine the weight of each index score of heavy elements, to establish hierarchical structure matrix analysis, the largest eigenvalues calculated by AHP last nine partitions earthquake Fuzzy comprehensive evaluation of the risk, find the value of their fuzzy risk. Secondly, based on the seismic risk assessment on the use of the general maximum covering model to the county re-siting study Escaping space:20 Escaping space determined candidate points to earthquake risk weights for each partition, using generalized maximum coverage model, in the pursuit of maximum coverage based on the selected nine Escaping space facility to meet the needs of disaster prevention in the entire county, and finally by LINGO software to solve the model, to give 9 facility.The study concluded that:(1) by computing nine partitions fuzzy risk value, the value obtained 4,5,6,8 earthquake risk area is relatively high, a low risk value 3,7 area, namely Geng horse town in the central and northwestern seismic risk value is high, and southeastern regions due to new urban population, fewer building when the earthquake disaster, loss of low risk; (2) The final selected five Chinese national primary, the county government, quality supervision inspection team, that innings village, Beijing cloud high school, infrastructure team, Ge Jing Park, Mount mussels village and the old vocational nine points to establish disaster prevention space, bringing the total coverage is maximized and ensure that the entire county are covered.