Evaluation And Optimization Of Urban Disaster Prevention And Mitigation Facilities Layout Of Fuzzy Comprehensive Evaluation

With the rapid development and expansion of the city，the emergency serviceneeds of the city are constantly changing in the recent years. The expansion of urbanareas causes more emergency needs，which the original emergency services facilitiescan not cover effectively. Transformation of the old city layout makes the originalfacilities no longer reasonable. so，there is an urgent need to evaluate and optimize theoriginal layout of urban emergency service facilities. Emergency facilities layoutproblem is aimed at identifying the emergency services number，making sure thelocation of facilities in a certain area，and reallocating resources for each emergencyservice facility. It places relevant，appropriate number and types of resources in theright place in a reasonable way. City emergency services facility layout problem isone of the key emergency management decision-making Problem. The relatedresearch of the location of the emergency services is an important research directionof emergency management. So selecting the right location of the emergency servicefacilities and making a reasonable distribution of resources is very important toimprove city emergency management ability. Optimization of urban emergencyservice facilities layout has become the main urgently problem in a city emergencymanagement system.In this paper，based on previous studies，we first introduce the basic theories ofcity emergency management. The characteristics of city emergency services wereanalyzed and their classification was made. We have made the literature review ofrelated researches on emergency resources management. Especially， we describedand analyzed the researches of emergency service facilities layout in detail.With the analysis and summarize of the relevant emergency management evaluationtheory，we pointed out the deficiencies of existing studies.Secondly，we discussed and made a summary of the base model used for thelayout of the city emergency services. We pointed out that different kinds of modelsshould be selected for different types of facilities.Thirdly， we analyzed the factors involved in the distribution of urbanemergency service facilities，and the layout evaluation system of urban emergencyservice facilities was established. In the comprehensive layout evaluation model of urban emergency service facilities， we use AHP to determine the weights ofevaluation indicators，and use fuzzy comprehensive evaluation method to make thelayout evaluation of urban emergency service facilities. Through which，we combinedthe qualitative and quantitative analysis and evaluation together. Then we applied themodel into the layout evaluation of urban emergency service facilities.After what，the difference of layout evaluation results could present theproblems and deficiencies of the existing layout. In the view of the results，weoptimized and adjusted the emergency service location and resource allocation in twoways. After that，we constructed a numerical example to verify the validity of themodel.Finally，we summarized the contents and conclusions of the entire article，andfuture research prospects were presented.Compared to previous researches，we established the layout evaluation model ofcity emergency service facilities. We evaluated the present layout standard of urbanemergency service facilities，which deepened the micro-level research in related fields.And an effective future research schedule was provided for the following researches.We built the city emergency service facilities layout optimization model throughexpanding the mode of emergency service location and resource allocation. With themodel， the emergency service facilities location and resource allocation wereoptimized and adjusted according to the evaluation results， which could achievethe purpose of layout optimization.In the application respect，we descript the layout evaluation index system ofurban emergency service based on the in-depth analysis of related factors of urbanemergency service facilities layout. And the urban emergency service layoutevaluation model was built to provide a measure of adjustment for future facilitieslayout. The model of facilities layout adjustment and optimization can provide easyquantitative methods for practical applications. The model can optimize the existinglayout，the city emergency needs could met as much as possible，and the costs ofconstruction and service operating could be cut down as low as possible.Furthermore，the efficiency and service of the facilities can be improved either.