The High Slope Stability And Governance Research Of The K301 Section In Yunnan YUANMO Highway

In recent years, along with the construction of highway in our country mountainous area, appear large number of high slope project problem, both increased the investment, and delayed the time limit for the project, even creates destruction of the project. The high slope is to change the geologic part to man-made project, its stability is not only controlled by the essential feature of stratum lithology,geologic structure,rock structure,hydrologic geology condition and so on ,but also controlled by the artificial transformation degree of dig grade,slope shape,slope ratio and so on. As a result of the geologic body's complexity, polytropy and heterogeneity, the design of high slope is very complex; Meanwhile as a result of geological condition's ever changing, have no slope project to completely apply the experience, this decide the high slope question distinctive quality, and concrete question must have concrete analyse.This thesis depends on western traffic research item "the project effect appraise and answer measure research of Yunnan YUANMO highway slope disease group", take the high slope of YUANMO highway K301 section as the research object, first at the foundation of investigation in the open country spot and elaborate analyse the had datum, particular expatiate the natural and geological environment condition, the slope essential feature, the slope stability influencing factor as well as the slope distortion destruction pattern and so on of the high slope;Then carried on the coefficient method which base on the rigid bode limiting equilibrium to quantity compute and analyse the slope stability, in order to provide the scientific basis for the high slope project's design and the supports structural design; Based on this carries on the high slope project design, and has emphasis studied with the theory and method of pre-stressed anchor frame in high slope supports and structural design; Finally carries on the finite element numerical simulation to analyse the high slope stability and the effort of pre-stressed anchor frame reinforcement slope.The result indicated: the major factor of influence slope stability is the landform, the stratum lithology, the geologic structure, the human activity, the rainfall and so on; the K301+360～550 section's high slope disease mainly controled by the rock mass structural, the next is small slope face distortion disease; naturely this place is at steady state, base to the design requirements to do the high slope design, excavates and has not supports the slope at critical state, uses the pre-stressed anchor frame to processing the slope and basically restore to the naturely condition, the effort is obvious.This thesis equal attention to the theory and practice, the system summarized the high slope project research primary content and method, and propose a set of systematic research system and the technical route. Chooses the labor spot to is representation, has the use for reference significance for the similar high slope project.