| Stability problem of high rock slope is rather serious in Jinping I hydropower station. Stability of slopes in the important positions ,which directly relates to the security of key project, is extremely significant problem for the engineering construction.This thesis aims to JinPing hydropower station slope limitation behavior and left with detailed, and the stability of rock in construction and reliable survey, structural plane creep characteristics of experimental basis, specific research work are as follows:(1) Sand slate compression creep characteristics in the experimental research: combining slope sand left slate relaxation of rock pressure plates in situ creep experiments, according to add uninstall measured displacements of time under the curve feature parameter inversion, adopt comprehensive, curve fitting method to the best pilot parts rheological model rock identification, determines the corresponding model parameters and rock mass long-term modulus.(2) Weak structure plane shear creep characteristics of experimental research: to f42-9 fault indoor shear creep test material as the foundation, analysis of weak structure plane shear creep characteristics, primaries several theoretical model, through the test data fitting, choose weak structure plane shear creep model, and draw the stress level and model parameters related. First the engineering analogy method to weak structure plane long-term strength parameters value, then carries on the preliminaryτand shear strain according to shear line cluster determine when such as weak structure plane's long-term strength.(3) Left the abutment long-term deformation slope stability analysis: according to the engineering geological conditions of the abutment is left, a 3d geological model; With the basic structure of rockmass, physical and mechanical parameters, and above the compression test get creep and shear creep model and parameters as the foundation, carry out left the abutment slope deformation fitted analysis; In realizing better fitting, and on the basis of the continuation of time on the left, the abutment was analyzed and predicted long-term deformation, evaluation of the abutment on the left slope stability in construction. |
