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Metal Mine ›› 2018, Vol. 47 ›› Issue (12): 34-38.

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Mining Method Optimization of Sharply-inclined Thin Orebody of a Tungsten Mine

Wu Lijun1,Han Xiaoliang2,Liu Baipu3   

  1. 1. China Society of Engineering Blasting,Beijing,100070;2. Zhejiang Gaoneng Corporation of Blasting Engineering Co. Ltd.,Hangzhou 310012,China;3. School of Resources and Environmental Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China
  • Online:2018-12-15 Published:2019-01-17

Abstract: In order to select the optimal mining method and solve the problems of high mining difficulty and cost for sharply-inclined thin orebody of a tungsten mine,the preliminary mining method is determined based on the actual geological conditions and some related technical data of the mine.Through comprehensive consideration of determined 9 factors affecting mining method optimization,the index weight is determined by using analytic hierarchy process (AHP).The membership matrix and comprehensive evaluation system are established after the dimensionless treatment.The optimal mining method is determined as short-hole shrinkage method.The engineering practice results show that the annual output of the mine is increased by 120,000 t and the annual cost is saved by nearly 4 million yuan by using short-hole shrinkage method,the achieved remarkable economic benefits are obtained,which can provide reliable reference for the similar mines.

Key words: Sharply-inclined thin orebody, Analytic hierarchy process, Short-hole shrinkage method, Judgment matrix