|
Tunnel and underground engineering construction accidents occur frequently , pay more attention to the domestic and foreign experts and scholars of the tunnel construction risk . Thus , discusses the characteristics of tunnel engineering research tunnel construction risk management - definition of tunnel construction risk , risk identification, risk assessment , and risk response , and of great significance . First, through domestic and international the tunnel risk management study of the content and outcome of combing , pointed out at home and abroad about the tunnel project risk management research and applications . On this basis , the proposed tunnel characteristics and specific risk management process to guide the Xiamen - Chengdu Expressway manhole Street tunnel construction risk management . Second , select the Xiamen - Chengdu Expressway Shajing Street tunnel construction risk management case study . Xiamen - Chengdu Expressway Shajing Street tunnel project of the Xiamen-Chengdu Expressway and Critical Control Point (HACCP) , huge investment , long construction period, and the complexity of the natural environment , construction facing the challenges of the complex geology, hydrology , meteorology , environment , construction period risks are more concentrated . Xiamen - Chengdu Expressway the manholes Street Tunnel construction is divided into the excavation hole body , initial support and secondary lining , waterproofing and drainage and monitoring to measure the four part project , identify risks through safety checklists and expert research and find the major risk factors , the establishment of the index system of the risk factors . Use survey and expert scoring method , AHP and fuzzy comprehensive evaluation sub-project , the single factor and the overall risk assessment . Drawn: the early risk of shoring, hole itself excavation and waterproofing and drainage large to belong to three risk measures must be taken to reduce the risk or transfer risk ; moderate risk of secondary lining and monitoring measurement , the need to strengthen the control and management : the entire tunnel the construction of the risk of belonging to \Finally , to the angle of the the builders stand and project management , starting from the construction organization design , project construction period risk prevention measures , owners and contractors a better understanding and knowledge of the possible risks of the construction period , in order to effective implementation of the risk management and risk reduction .
|