The Slope Stability Analysis And Control Measure Of National Assistant Road 110 In K49+010～K58+140

Slope stability analysis is the basis for the prevention and control of slope failure. In order to adjust the needs to the rapid infrastructure development in China's mountainous areas, use the assistant line of national road 110 slopes in K49+010~K58+140 as an example to discuss systematically slope characteristics, slope failure characteristics, failure mechanism, and then to explore a comprehensive prevention and control method. It is not only of great theoretical meaning, but also of importantly social and practical significance and economic value.The study based on rock slopes employs the means of systematical engineering geology survey, mathematics, mechanical analysis and computer simulation technology to systematically research the slopes along the road, including:(1)On the basis of on-spot survey data with the statistical analysis, deformation and the failure of slopes in the study area is divided into five types: the slided down of slope surface, dangerous and falled rocks, collapses, sloughings and landslides, then their deformation mode and failure mechanism were explored(2)The main controlling factors of slope failure in the study area are auxetic transfixion joints and fault fracture zones, and then apply them to calculation and simulation as boundary conditions.(3)The slope stability of K57+411~K57+536 with rigid body limit equilibrium method was calculated. And using FLAC3D to simulate the displacement field, stress field and plastic deformation zones and the results of two methods were compared finaly.(4)Based on the mechanism understanding, calculation and simulation, the general protection design of the rock slopes was put forward to.Studies have shown that many problems still exist and need to be resolved in the slope stability analysis and protective governance. The paper carries out a useful attempt, but because of the complexity of the slope itself, the results of this study are still preliminary and shallow. It is demanded to pay more arduous efforts to solve the problem fundamentally.