Study On The Risk Assessment Of Security Of Bank Roadbed Along Three Gorges

As the water level of Three Gorges of Changjiang reaches the design standard, the security risk problem of bank becomes important not only to the road design and construction, but also to the operation of the built road. Therefore, study on the risk assessment of the bank roadbed security could be quite useful and helpful to the future design and construction of the similar road, also value a lot for the harzard assessment of the bankroad.In this dissertation, a study on the security risk of bank roadbed is carried on basing on the the lack of systematic research on the problem which may lead to serious consequence.This dissertation conducts a thorough review of the researches and achievements on the disaster risk assessment and risk management both domestic and abroad; and also makes a review of the theories of risk management and the methods for bank road bed stability assessment. Basing on the rough set theory, a model of risk assessment of single factor is established; basing on the fuzzy mathematics theory, a model of risk assessment of a combination of factors is established. Investigate and collect the imformation of Yuba bank road, utilize the resources of the relevant assignment, then make identification and analysis of the risk factors on bank road security. Combining with the study and analysis above, conduct the risk assessment of a combination of factors with the fuzzy math model, then the risk assessment results of the security of Yuba bank road are listed. Basing on the resources of the assignment and the Yuba bank road imformation investigated and collected, this dissertation provides a method to make sure the weight of the factors though the analysis of the actual bank road instances, and prorides a strong support to the follow process; and makes a risk assessment of a combination of factors and gets the list of the security of each section of Yuba bank road. A computer program is also provided for the convenience of the calculation of the models.Basing on the the relevant assignment"The Research of Stability of The Bank Road of The Section Along Bai and Nan in Yunyang of Yuba Road", this dissertation makes the study on the risk assessment of the Yuba bank road security.