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金川有色金属公司龙首矿从1965年开始,在井下开采中采用了胶结充填采矿法,在回采方案上仅选用了分层胶结充填和留矿一次充填法,在龙首矿的矿石和围岩条件下,不能保证作业的安全。过去在一些矿岩很不稳固的富矿和贫矿区段,只得采用崩落法回采,损失贫化都在30～35%左右。从1580中段以下,富矿区段逐步扩大,矿岩特
Since 1965, Jinchuan Nonferrous Metals Company, Long Shou Mine has adopted cementing and filling mining method in underground mining. Only selected stratified cementation filling and retention mineralization filling method has been adopted in the mining program. In the ore and surrounding rock of Long Shou Mine Conditions, can not guarantee the safety of work. In the past, some very unstable ore-bearing ore-rich areas and lean mines had to be reclaimed by caving methods and their loss and depletion were all around 30-35%. From the middle of 1580, the section of rich ore is gradually expanded and the ore is special