Study On Stability Control Of Deep Cutting Slope In Highway Engineering

Highway construction in mountainous areas will produce a large number of cutting slopes,which may cause potential slope instability and affect the safety of highway engineering.Therefore,it is of great significance to study the stability control of deep cutting slopes.In this paper,the basic characteristics of deep cutting slope are comprehensively analyzed.The stability analysis of slope finite element model is constructed.The main factors affecting the stability of cutting slope are evaluated from the aspects of excavation depth and angle.And the stability control measures of deep cutting slope are put forward in combination with practical examples.These achievements can be consulted in highway engineering construction.The main research contents and results are as follows:(1)The failure characteristics,failure modes,stability evaluation methods and control techniques of cutting slope were expounded,and the basic theoretical system of the paper was constructed.(2)The finite element model was constructed to determine the failure process of cutting slope.The influence of the calculation range of finite element method,grid density and intrinsic factors of rock mass on slope safety factor were analyzed.(3)The influence of process stability,shear stress,displacement change and instability mode of cutting slope were analyzed and evaluated under different excavation modes.(4)A finite element model was built to analyze the change of safety factor,lateral displacement and vertical displacement of deep cutting slope.The key points of cutting slope construction,stability control measures and information monitoring methods are put forward.