The Cut Slope Stability Analysis And Governance Research In Tong Ping Highway

In recent years,with the steady development of the national economy government emphasized largely on the basic construction of the mountainous areas.The most important thing is to build high-class highway, even it's a very difficult task to build it im the mountainoous areas. Whether the highway slope is stability and measures of prevention and treatment reasonable is a problem that must be considered in highway design,construction and conveyance.The slope disstablilization not olny causes the serious traffic incidents, but also dose great damages to the nesr people's lives and properties.Today, it is a rather arduous assigment for controlling slope unstability, and it has very important meaning to study analysing stability and treating technique for slope deeply. In order to adjust the needs to the rapid infrastructure development in China's mountainous areas, use the assistant line of Hunan province tong-ping freeway construction bid of seven K38+300-K38+360 high cutting weathered slate slope as an example to discuss systematically slope characteristics. The problems that were discussed in this paper are as follows:(1) The analysis methods of slope stability and advantages, disadvantages and applicability conditions of common control technology are studied;(2) K38+300-K38+360 slope stability are using finite difference method and ultimate balance method evaluation, and contributes to both methods, the safety factor of the slip face shape, surface location are compared, mutual authentication in two of the credibility of the analytical method;(3) The slope stability of K38+300-K38+360 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) According to the results of the calculation, on the slope was anchor reinforcement and appropriate protection;(5) FLAC3D simulation of prestressed cable is carried out on the slope of prestressed cable. comparison of its reinforcement effect safety factor, and the internal displacement of slope,and the shear strain increment in prestressed cable before and after.