Soft Rock Slope Major Effect Factor And Stability Analyses

The slope stability receives the numerous factors the influences, there are many factors that are difficult to determine, also difficult to quantify the estimated, the factors that affect the stability of the slope is not only random but also ambiguity, based on the survey of more than 200 road soft rock slope statistical analysis, Research shows that:Soft rock slope area to investigate the appearance of the main characteristics of the slope is less steep,High-slope lower,large slope length and there is significant rock-controlled structure of the surface characteristics. the statistical analysis determines the influence slope stable 5 primary factors: SMR value,slope tendency and most disadvantageous structural plane tendency included angle,rock snapping back ratio,angle of slope,rock snapping back value, and AHP application of law to determine the factors that affect weight, has avoided certain subjective factor, to make a more objective evaluation of the results, the above each influencing factor the weight to reduce in turn.The extension engineering method is combined with slope stability. has developed the extension theory application domain, slope extension theory appraisal through element extension set interrelatedness computation, soft rock on the slope stability evaluation of the qualitative and quantitative evaluation, expresses and various stable rank relations with the interrelatedness, through interrelatedness size to determine soft rock side slope belongs to what stable rank.Regarding the present evaluation exercise, uses the computer to carry on the automated appraisal is a general trend, the computer is not only restricted in regarding the appraisal help saves the manpower, to make computing simple, and the introduction after reasonable method, may reduce the human factor regarding the appraisal influence.application extension theory establishment evaluation model, not only has the appraisal to be accurate, qualitative and quota union many merits, moreover suits in the computer program establishment this article used VB the language to establish the slope stable extension theory evaluation program, and has carried on the appraisal to the investigation all example slope, through returns sentences with the actual overall coincidence rate is 78.5%, explained the main evaluating indicator selection,target weight and assessment method rationality and feasibility.