The Deformation Monitoring And Back Analysis Of High Rock Slope Of The Three Gorges Project Permanent Shiplock

The high rock slope of Permanent Shiplock is important part of the Three Gorges Project. This article analysed comprehensively the engineering geology condition, deformation and stability of the high rock slope. Based on the results of test, monitoring and past analyses of the high rock slope, a generalized model for geology and construction process is established. By combination of computing schemes of orthogonal and even design methods with rock mechanical parameters and initial stress field as basic variable, the finite difference method is used to complete the excavation-simulated computation of the high slope considering the effect of excavation unloading, and an optimized back analysis is conducted by using the neural network and genetic algorithm. The basic agreement of result of the back analysis with the testing data indicates thet the mechanical parameters and initial stress field obtained from the proposed back analysis are reasonable.