Risk Assessment of Slope Excavation Construction in Mountain Area Based on Fuzzy Comprehensive Evaluation Method
Relying on the construction project of a expressway cutting rock slope,a rock risk evaluation model of cutting rock slope construction based on fuzzy comprehensive evaluation method is proposed by establishing a three-level risk evaluation system of rock slope excavation construction.In this model,the subjective weight and objective weight of evaluation indexes are determined by Analytic Hierarchy Process(AHP)and CRITIC method,and on this basis,uses the principle of minimun discriminant information to determine the combined weight.Thereafter,the trapezoidal affiliation degree function is used to obtain the affiliation degree vector of each evaluation index,and the affiliation degree matrix is established.Then,the risk assessment of the target is carried out using the utilization of fuzzy comprehensive evaluation method.Finally,the evaluation model is applied to the expressway cutting rock slope construction excavation physical project and compared with the results given by the on-site evaluation team using the LEC method.The research results show that the model calculation results are basically consistent with the determination given by the on-site assessment team,thus verifying the feasibility and rationality of the model.
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