Guangyang-road K3+980~k4+240Section Slope Stability Evaluation And Treatment Design

Along with rapid development of our country economy and construction，the slope drawnParamount concern from civil engineering. As the most common geological environment, slopeinvolves highway, railway and other transportation projects; water conservancy and electricityfacilities, hydropower dam projects; the high slope mining engineering, and many otherengineering fields. The slope slump will became a direct threat to the construction of projectsand to people’s life and property security. And the slope slump became one of the three majorgeological disasters in the world. Therefore, whether correct evaluation of slope stability is oftencrucial to the success of the project, and also it is important link to ensure the project safety andreduce the construction cost.This thesis studied the slope in GuangYang-road. The slope rock group’s materialproperties show in the slope material physical and mechanical parameters table by the tests ofrock density and moisture content test, geotechnical direct shearing test and rock angle changedshear test mode. This paper used to numerical analysis software of Slide6.009which base on thelimit equilibrium theory of the slice method, and used to numerical analysis software of Phase2Dwhich base on the finite element of strength reduction theory to calculate and evaluate thestability of the slope.The main research results are as follows:1. This paper analyses the development trend of slope engineering and the hazards of slopeinstability, then summarized the research situation of slope stability evaluation methods both athome and abroad.2. Introduces the finite element of strength reduction method, and three limit equilibriummethods such as the Swedish circular method, bishop method, and Morgan Stan-price method inthe theory of slope stability assessment. Then choose appropriate numerical analysis method andconstitutive model of this paper’s project to finish two dimension numerical analysis modeling.3. Use Slide6.009and Phase2D two dimension numerical analysis software, this paperanalyzed the slope’s safety coefficient and rock strength factor in normal conditions, abnormalcondition I (rainstorm or continuous rainfall state), abnormal condition II (earthquake andload).Then through the contrast the result of analysis date, the slope get the assessment ofstability.4. According to the results of numerical analysis, this paper analyzes the factors influencingslope stability. Summarize the principles and methods of slope treatment. The slope treatment bythe method of optimizing the slope angle, shape, and disburden the load of slide segment. Thetop of the high voltage tower have high settlements, so need reinforcement design.5. According to processing measures, use numerical analysis software to analyze the slopeof optimized, validation treatment effect. Eventually, this paper proposes treatment plan and thesuggestion of the slope project.