The Research Of Drainage Facilities For Security Protection Grade Intelligent Decision System During The Subway Construction Period

The protection of the drainage pipeline is an unavoidable problem during the subway construction,the research of drainage pipe risk on the subway construction period and put forward protection measures of economic、reasonable and reduce the blindness in the protection is particularly important.The complexity of drainage pipeline and the complexity of subway construction caused the complexity and uncertainty to the factors of drainage facilities level of risk evaluation.In this paper,using the risk evaluation method of gas and oil pipeline based on fuzzy analytic hierarchy process to evaluate the security level of drainage facilities.First, determine the factors that influence the risk level of drainage pipeline based on consulting a large number of date, then combined with the knowledge and experience of the experts which the drainage group and the subway construction selected the main influencing factors, so as to establish an evaluation model of drainage facilities safety risk grade during the subway construction, and to determine the corresponding impact factors of weight and the membership degree matrix.According to the evaluation factor system and the influence factors of weight and membership degree matrix, to judge the risk grade of the drainage pipe during the construction of Beijing City Art Museum station, according to the principle of maximum membership degree determine the risk grade of the drain pipe, and put forward the corresponding protection measures. Consistent analysis results of practical engineering case and using the analytic hierarchy process, show that using this method and data of drainage pipeline risk evaluation is feasible.Finally, on the basis of the drainage facilities safety risk assessment index system during the subway construction,using the AHP and fuzzy comprehensive evaluation method to establish safety risk assessment of drainage method, and then development of the subway construction of drainage facilities security protection grade intelligent decision system. The software is based on windows operating platform, the user interface is simple, the user needs to choose the option to complete the risk assessment, software can provide suggestions corresponding protection measures according to the risk level of the pipeline.