猫场铝矿废石胶结充填试验研究  

Test Study on Cement-waste Rock Filling in Maochang Aluminum Mine

作　　者：余超 侯国权 Yu Chao;Hou Guoquan(Guizhou Mining Company,Aluminum Corporation of China Limited;BGRIMM Technology Group;National Center for International Joint Research on Green Metal Mining)

机构地区：[1]中国铝业贵州分公司矿业公司,贵州省贵阳市551413 [2]北京矿冶科技集团有限公司,北京市102628 [3]国家金属矿绿色开采国际联合研究中心

出　　处：《现代矿业》2020年第4期139-142,共4页Modern Mining

基　　金：国家重点研发计划项目(编号:2017YFC0602904)。

摘　　要：某矿山每年产生废石量约9万m3,目前已超过废石堆场的设计容量,提出废石胶结充填法开采.通过废石胶结充填材料试验研究和采场所需强度设计,确定试验采场废石胶结充填配比参数选取水灰比0.6,灰废比0.2.通过工业试验,充填体强度满足采场回采要求.同时,从二步骤回采揭露的充填体效果来看,充填体接顶率高,稳定性、均质性较好,为二步骤的安全回采提供了有力支撑,使采场回收率提高15%以上,经济效益显著,解决了矿山废石排放问题,有效利用废石充填,实现无废开采.The amount of waste stone produced by a mine is about 90000 m 3/a,and the amount of waste stone that is currently piled up exceeds the design capacity of the waste yard,the cement-waste rock filling method is proposed.Through test study of the cement-waste rock filling material and strength design required for the quarry,the cement-waste filling ratio is obtained,the water-grey ratio was selected as 0.6 and the ash-waste ratio is determined as 0.2.Through industrial test,the strength of the backfilling body can meet the stope mining requirements.Besides that,from the two-step back-picking revealed the effect of filling,the backfilling body has the characteristics of high jacking rate,good stability and homogeneity,which can provide reliable support for the two-step safe mining operation,the recovery rate of the stope is improved more than 15%,the economical benefits are significant,the discharge problem of waste ore of the mine is solved,which is helpful for making full use of waste rock and realizing the goal of non-waste mining.

关 键 词：废石 胶结充填 工艺参数 充填体强度 

分 类 号：TD853.34[矿业工程—金属矿开采]