Optimal Selection and Application of Unloading Mining Scheme for Deep Mine Deposits Based on Critic Weighting Method
With the gradual depletion of shallow mineral resources,deep mine mining is bound to become the main battlefield for strategic resource development in China.However,the high ground stress,high ground temperature,high permeability,and strong mining disturbance faced by deep mine mining will restrict the safety of deep mine deposit mining,greatly increasing the difficulty of large-scale mining.The selection of reasonable mining methods is a prerequisite for solving the efficient and safe mining of deep mine deposits.A comprehensive optimization evaluation model for deep unloading mining schemes was constructed by introducing the Critic weighting method.Four unloading mining schemes were proposed by taking a deep super large mineral deposit in China as the research background,and a comprehensive evaluation model based on Critic objective weighting method was established to evaluate the proposed schemes.The results indicate that the fourth scheme,namely the panel layer unloading and large cross-section approach mining method,is the optimal solution.Based on the optimized scheme,field industrial tests were conducted,and the test results proved that the recommended mining scheme has the advantages of high unloading efficiency,high production capacity,and low dilution loss indexes.The feasibility and applicability of introducing Critic weighting method into deep mine unloading mining scheme selection were verified,providing a new idea for optimal selection of deep mine unloading mining scheme in domestic mines.
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