Due to the lack of professional ris

Due to the lack of professional risk inspection manual, a large number of materials need to be consulted in risk identification.The main steps are as follows: first, determine the acceptance criteria after each risk event, and define different risk acceptance levels according to different acceptance criteria.Third, according to the acceptability of the project, determine when the risk assessment will end. Generally speaking, we can stop when the determined risk level is within the acceptable range.Analytic hierarchy process was first proposed by Professor A.L. Saaty in 1980 [51]. It is a flexible and practical multi-objective decision-making method, which can successfully combine subjective factors and objective factors.The overall goal of the project is broken down into several manageable parts. Second, build the overall framework of project objective risk to form the structure level. Third, construct the comparison judgment matrix, and use the comparison method toCalculate the weight coefficient of each risk factor. For each pairwise comparison matrix, the maximum eigenvalues and corresponding eigenvectors of the judgment matrix are calculated. Fifth, check the consistency of expert evaluation structure.Establish the corresponding evaluation index system. Third, set up risk factors. Fourth, using mathematical methods to determine the weight vector of risk factors. Fifth, the establishment of membership.This chapter first analyzes the concept and characteristics of the risk of the coal mine supplementary exploration construction project.The construction risk evaluation of the supplementary exploration project includes risk matrix method, analytic hierarchy process and fuzzy comprehensive evaluation method.