非胶结尾砂自然安息角试验研究  

Investigation on Natural Repose Angle of Uncemented Tailings

作　　者：张义平[1] 王永明[1] 

机构地区：[1]贵州大学矿业学院,贵州贵阳550003

出　　处：《矿业研究与开发》2008年第5期27-29,共3页Mining Research and Development

基　　金：国家科技支撑计划项目(2007QAB00008);贵州省教育厅重点项目(黔教科2006203)

摘　　要：斜壁充填采矿技术必须确定合理的非胶结尾砂自然安息角。研究了含水量、粒度级配、容重及硫化物含量对尾砂自然安息角的影响,并进行了非胶结分级尾砂自然安息角试验。得出了非胶结尾砂自然安息角与含水率的关系曲线,确认斜壁充填采矿最佳尾砂含水率为12%左右。It is important to determine the natural repose angle of uncemented tailings for incline - wall stoping with backfill. So the influences of moisture content, particle size graduation, bulk density and sulfid content on the natural repose angle of uncemented tailings were investigated,the natural repose angle of uncemented railings was tested, and the relation curve between the natural repose angle of uncemented tailings and its moisture content was obtained. The optimal moisture content of uncemented tailings for incline - wall stoping with backfill was found to be 12% about.

关 键 词：非胶结尾砂 自然安息角 斜壁充填采矿 

分 类 号：TD853.34[矿业工程—金属矿开采]