Vulnerability In Mirco-environment-health Of Underground Rail Transit Systems

Construction of underground rail transit projects has witnessed a remarkable leap forward withthe rapid growth of domestic economy.It provides travel convenience for urban residents.However,numerous complex mirco-environment risks in subway system inevitably pose huge threat to the health of employees and passengers in operation period,leading to the vulnerability of subway micro-environment-health gradually exposed.In order to improve the travel experience of more people,reduce the adverse health effects brought by the micro-environment of the subway,and ensure the sustainable development of underground rail transit,it is necessary to carry out research on vulnerability in mirco-environment-health of underground rail transit systems.It mainly contains the following subjects:(1)Through introducing the concept of environment-health and vulnerability,it firstly defined the vulnerability in mirco-environment-health of underground rail transit systems,analyzed the characteristics of vulnerability from perspectives of exposure,sensitivity and resilience,and then the model of vulnerability in mirco-environment-health was established.(2)Based on the actual measurement of Line X,the micro-environmental quality of Line X is comprehensively analyzed from the four aspects of thermal environment,luminous environment,acoustic environment and air quality,and the concrete expression of exposure in mirco-environment-health was clearly defined.(3)Through questionnaires investigation on employees and passengers of the Line X,the basic information,travel information,perception and adaptive behaviors of personnel were confirmed,and then the concrete expression of sensitivity and resilience were summed up.At the same time,the model of vulnerability in mirco-environment-health was validated and optimized.(4)Evaluation index system of vulnerability in mirco-environment-health is established following relevant principles.Line X is taken as an example,the index weight is determined by entropy weight and synthesis evaluation method.Based on the study of the foregoing,relevant measures to reduce the vulnerability were proposed from the perspectives of technology,legal policy and management.This paper is an extension of the related research on underground rail transit.It aims to improvement in operation management on micro-environment-health in subway system and promote the sustainable development of rail transit construction.