改进铜坑锡矿分段空场嗣后充填采矿法的设想

A Tentative Plan for the Improvement of Sublevel Open Stoping with Subsequent Backfilling at Tongkeng Tin Mine

铜坑锡矿采用一步骤采场和二步骤采场宽度相同的分段空场嗣后充填采矿法开采 ,其胶结充填量占总充填量的 50 %。作者提出改进方案 :用较小尺寸布设需胶结充填的一步骤采场 ,用较大尺寸布设非胶结充填的二步骤采场。这样可达到减少胶结充填量 。

The deposit at Tongkeng Tin Mine is exploited by sublevel open stoping with subsequent backfilling,the width of the first-step and second-step stopes is the same and the volume of cemented fill accounts for 50% of total backfill.The authors put forward an improving scheme i.e. arrange the first-step stopes with smaller size for cemented filling and the second-step stopes with larger size for noncemented filling,so as to reduce the volume of cemented fill and cut down the cost of backfilling.