The Slope Stability And Slump Hazard Assessment Along The G109National Highway In Mentougou

Collapse slide is one of the most common and serious geological disasters. Collapse slidecauses a loss of hundreds of millions every year, brings huge losses to the country, people’slives and property, and has a serious social impact. As for slope control along highways, weshould take more targeted management work after taking comprehensive analysis into slopestability and possible degree of harm.In this paper, I have analysis and summary on the slope collapse slide study on the basis ofboth domestic and abroad, and propose a risk assessment method of road collapse slide disaster.The main content of this assessment includes three parts: the analysis of slope stability, slopecollapse slide disaster hazard analysis, and hazard analysis. For the analysis of slope stability,this paper adopts geological strength (GSI) value obtained in fields and uniaxial compressivestrength obtained from the experimental test of the rock, takes an advantage of GSI rockmassquality classification system for the estimate of mechanical parameters of slope rock mass, andtake a further step to the slope stability analysis with an application of limit equilibrium methodand numerical simulation. For collapse slide hazard analysis, this paper determines the weightof each factor and the harm degree of membership belonging to each factor, on the basis ofharmful levels of the three factors within potential dangers, and makes an application of thefuzzy comprehensive evaluation method to evaluate the slope hazard.From an initial judgment and analysis of complex slope stability, the number of slope withpoor stability is17, accounting for8.9%of the total number of hidden danger slope; Thenumber of basically stable slope is145, accounting for75.9%of the total number of potentialslope; The number of stable slope is29, accounting for15.2%of the total number of slope.The number of slope that may case collapse slide disasters which will have huge impact isoccupying23%of the potential slope;The number of slope that will cause a medium hazard isaccounting for15%of the potential slope; The number of slope that may only cause a littledanger is accounting for62%of potential slope.Synthesizing slope stability analysis and risk assessment, there are25slopes along theNanyan Road that have a large degree of danger, There are41slopes that have a medium degreeof danger; There are125slopes that have a minimum degree of danger. This paper selects slopes along G109National Highway as its object, with a background ofthe project of “Investigation of Potential Collapse Slide Disaster Slopes Along the Main Roadof Mentougou District, trying to make a combination analysis of slope stability and factors thatcause impact, and make a further, more targeted and more economical and reasonable controlmeasures for roads. And I hope this can provide preference for future treatment andenvironment recovery of road slopes.