STUDY ON THE STABILITY OF LEFT BANK IV-VI RIDGES AT JINGPING HYDROPOWER STATION IN THE CONDITION OF ATOMIZATION

摘要

@@Deep cracks are obviously developed in the left bank slope of IV*-VI* ridges. The discontinue planes of f2, f5 and f9 faults are existed in the left bank slope of IV*-VI* ridges. The huge latent instability block is assembled by these deep cracks and defaults. The stability of the huge block is attended under conditions of flood discharge. In this paper, the deformation failure mechanisms of whole slope and local block are deduced under the condition of flood discharge based on plentiful geologic investigation data. The deformation of FV-VI ridges is analyzed and computed under the conditions of hydrogeology changed by FLAC3D software. The calculation of parameter and water table sensitivity indicates that the whole slope's stability is more sensitive to rock mass parameters than different water table.