According to the characteristics of deep crack that is only developed in V line right bank slope in Lenggu Hy-dropower Station,the cause of deep crack is analyzed on the basis of the engineering geologic condition,the slope struc-ture and the Gaxiapa landslide failure mode.The results indicate that the deep crack of the slope is caused by the gravita-tional creeping instead of common unloading,and the distribution range and opening degree of deep crack of slope are con-trolled by the development degree of gentle-dip surface.By analyzing the deformation degree of deep fissures in the slope and combining it with the FLAC3D simulation of the overall slope stability,it was found that the stability of the upstream side of the slope after water storage was lower than that of the downstream side.This provided a reliable basis for taking reasonable support measures for the slope in the future and served as a reference for the study of slope stability during wa-ter storage in similar hydropower stations.
关键词
楞古水电站/坝址区边坡/深部裂隙/成因机制/变形破坏模式
Key words
Lenggu Hydropower Station/slope in the dam site area/deep crack/genetic mechanism/deformation and failure mode
维普
万方数据