Key technology for risk analysis and safety evaluation of Qiantang River seawall
Wang Wei-biao, Jin Weiliang · Journal of Zhejiang University(Engineering Science) · 2007
Based on relevant previous studies,several risk factors affecting the Qiantang River seawall were brought forward.The corresponding fault tree model and the schematic ideals for systematic risk analysis on the reliability of the seawall were also provided for considering that the riverbed's characteristics changes greatly and rapidly.The seawall fault tree is the system in series,and the key to the fault tree is the solution to conditional probability P(B/A).So the idea of solution to conditional probability by integral transform was presented on condition that its probability density function obeyed normal distribution.The flat level in front of the seawall was regarded as a random variable.Analysis of the high water level variation by the theory of information entropy,and practical technique such as using runoff for erosion,dumped riprap to reinforce the seawall were emphasized as the key technology of risk analysis and safety evaluation of seawall.