There is no standard basis and effective method for predicting the engineering risk of weathered granite boulders on slopes.There are many factors and uncertainties that affect the stability of granite weathered boulders on slopes.The introduction of analytical hierarchy process(AHP)and the establishment of a hierarchical model for risk assessment have been applied to derive a matrix of factors that have important importance based on engineering practice and feedback.The weight matrix of factors has been derived.Based on qualitative scores of various factors,a conclusion of risk assessment has been drawn,which is characterized by being both qualitative and quantitative.There is a good consistency through engineering comparison.
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