THE DAM ROCK-MASS QUALITY EVALUATION AND TREATMENT OF DEFECTS OF THE CROWING GRAVITY DAM OF GUANDI HYDROPOWER STATION

Crown land is a high gravity dam hydroelectric complex geological conditions, rock dam reasonably accurate evaluation of the quality and effective treatment of defects in the dam's safety is essential. Based on the sketch and the actual excavation of exposed geological conditions, through the geological documentation of qualitative evaluation and quantitative assessment of the gravity geophysical detection of rock foundation excavation comprehensive evaluation results show that rock excavation to expose essentially the same geology and previous surveys, the overall rock mass dam to meet the requirements. It has certain guiding significance for the rock mass evaluation of gravity dam foundation in the future.