|
Abstract Based on the field geological investigations of remnant slope as well as the distribution，scale and penetration depth of crack in slope surface，combined with the mechanism of Tangjiashan high-speed landslide，it is presumed there is still the possibility of that the large-scale landslide except for the sprinkling rockfall occurs on the surface of remnant mountain body. The large-scale landslide failure mode is：tension cracks of slope crest penetrate through bedrock，bedding landslides take place on the middle slope and shear oblique layer on the bottom，and the characteristics can be expressed with tension-sliding-shearing model. According to the failure mode，considering different conditions of natural，continuous rainstorm as well as earthquake，the stability calculation and analysis of remnant mountain body by two-dimensional and three-dimensional broken line potential sliding surfaces are carried out. The results show that the remnant mountain body is stable wholly，but the shallow surface stability is unfavorable，and the control measures to remnant mountain body are proposed.
|
|
Received: 13 March 2009
|
|
|
|
