USE OF ADVANCED BAYES METHOD TO INFER PROBABILITY DISTRIBUTION OF STRUCTURAL FACE DIP PARAMETERS IN ROCKMASS FOR PERMANENT SHIPLOCK OF THREE-GORGES PROJECT

The shiplock of the Three Gorges Project is the largest one in the world. Faults and Joints in rockmass are more developed of in the project area and affect the mechanical properties of rockmass. For study the distribution character of joint dips, an advanced Bayes method is used to infer the probability distribution function(PDF)of joint dips parameters in rockmass in the paper. Based on 3373 Joints in the rockmass for the permanent shiplock of the Three Gorges Project, the PDF of dip parameters are analysed by using advanced Bayes method and the errorstested are in permissible limit.