Research Of Soil Slope Stability Evaluation Based On Cloud Model

Slope stability refers to the stability of rock and soil slope at a certain slope height, slope angle and other conditions. Because the stability of the slope involve various engineering fields : highway,railway, water conservancy, municipal, civil engineering, mining, etc.,it directly related to the funds investment of construction, people's lives and property safety, and the control measures should be taken, So, slope stability analysis and evaluation is always an important slope engineering research area for a long time. Accurate assessment of the rock slope's stability, avoid the harm of slope instability, has important significance.According to the characteristics of the inevitable fuzziness and andomness in the slope stability evaluation,we proposed the model of slope stability evaluation based on cloud model, combined the combination weighting game theory considering subjective and objective weight,evaluate the slope instances. In the process of evaluation, the seven evaluation has been determined based on the analysis of actual slope engineering data, including: slope height, slope angle, inlination angle of slip surface, cohesion, internal friction angle, rock mechanics classification, seismic intensity, and establish the evaluation criteria. After reading a lot of literature and books,summarized the cloud model digital features' formulas, get the features of each factor on each stabilitylevel,using the forward cloud generator generates comprehensive cloud.According the actual slope data,the degree of certainty for each slope on each stability level can be obtained. Finally,the maximum degree of certainty determined the slope stability level. Comparing the cloud model method with the actual situation of slope stability,proved that this evaluation result is reliable, the method is feasible and effective.