Research On The Stability Of Cut Slope Under Human-Induced Disturbance

With traffic construction developing to mountain areas, lots of cut slope has formed by human engineering activities. Because of human activities, such as excavation blasting and traffic, in addition with strongly weathered rock mass, thick over-burden and fragmental rock structure, cut slope stability has become a striking problem. Based on numeric simulation analysis method, some research is done on the stability of slope excavation and dynamic response of slope under blasting load and traffic load. The main contents are as follows:(1) Simulating the process of staged excavation with engineering instance, obtaining displacement distribution , stress field, plastic zones and deformation features in the whole slope during staged excavation, checking the state of slope stability and destruction pattern by rationally selected instability criteria, offering the basis for digging construction and monitoring.(2) Simulating the dynamic response of slope under blasting load, obtaining velocity histories and stress histories in different position of slope, analyzing the distribution of stress field and displacement field induced by the propagation of blasting vibration, summarizing the attenuation in blasting vibration wave propagation processing, then guiding construction.(3) Simulating the dynamic response of slope while applying respectively different vehicle action near the toe of slope, obtaining the dynamic response of slope, as the theoretical basis for the design and reinforcement of cut slope.