Study On Maturity Evaluation Of Emergency Capability Of Underground Caverns Construction

With the development of our country’s economy,more and more large-scale,multi-level underground cavern excavation are being built with the construction mode of underground large caverns in the field of hydropower station construction.The topography and geological conditions of the underground caverns of these large-scale hydropower stations are complex,and the canyons are deep.The regional layered rock masses are widely distributed.They have features such as large-scale projects,compact layout of caverns,and high hollowing rate.It is prone to emergencies,such as rock bursts,roof fall,water inrush,etc.,which pose more severe challenges to the work of emergency management for underground caverns construction.At the same time,there are still some deficiencies for the work of construction evaluation of emergency capacity of underground caverns construction in China.Therefore,it is necessary to carry out further research for it.In view of this,this paper introduced maturity related theory and comprehensively uses ANP,catastrophe progression method and multi-objective linear weighted function method to establish a maturity model of emergency capacity of underground caverns construction,and quantitatively evaluated its maturity level of emergency capability.And according to the evaluation results,the improvement order of emergency capability maturity was analyzed so as to carry out targeted improvement.Fistly,this paper analyzed the characteristics of underground caverns construction,and extensively referred to domestic and foreign relevant emergency management systems and the emergency capability evaluation index system of other areas,and initially constructed a structure table of evaluation index of emergency capability maturity of underground caverns construction,and used the Likert scale method.The method analyzed the correlation degree of the primary evaluation indicators,deleted the relatively weak evaluation indicators,and then constructed a reasonable evaluation index system of emergency capability maturity of underground caverns construction.Then,this paper analyzed the relationship between the indicators of the evaluation index system of emergency capacity maturity of underground caverns construction by ANP,the weights of the evaluation indicators at each level were determined,and then the importance ranking was performed according to the weights of the evaluation indicators.The mutation progression method and the multi-objective linear weighting function method were used to calculate the comprehensive evaluation value of emergency capacity maturity of underground caverns construction.Combined with the classification criteria of the level of emergency capacity maturity of underground caverns construction,the maturity level was judged,and the improvement order of the maturity of emergency capabilities was analyzed.Finally,the model was applied to the case of the underground caverns in Q hydropower station.The results of the case application showed that the model was feasible in engineering practice.Using the quantitative method could accurately determine the maturity level of emergency capability of the underground caverns construction,and the weaknesses of the project construction unit in the work of the emergency management could be analyzed to provide a basis for formulating a reasonable improvement plan.