采矿与安全工程学报2017，Vol.34Issue(6)：1116-1121,6.DOI:10.13545/j.cnki.jmse.2017.06.012
胶结充填体与矿石的能量匹配关系及固化时间的确定
Energy matching relationship between cemented backfill body and ore and determination of curing time
摘要
Abstract
Through analyses of the uniaxial compressive strength and the curing time of cemented backfill body for various cement-tailing ratios and slurry concentrations, positive correlation mathemat-ical expressions between the strength of cemented backfill body and the curing age are established. The energy matching coefficient K is introduced to show the energy density relationship between the backfill body deformation and the ore excavation at the open stope with the subsequent filling method, which obtain relationships between the K coefficient and elastic modulus of ore, the vertical stress, the curing strength of cemented backfill and the curing time of cemented backfill body. Based on that, the exca-vated time in the second step is quantitatively analyzed. The slurry concentration of 75% and ce-ment-tailing ratio of 1:8 and 42 days curing time are selected for the engineering application of Lilou iron mine, which shorts the curing age by 18 d than original design.关键词
胶结充填体/固化强度/矿岩回采/能量匹配分析Key words
cemented backfill body/curing strength/rock mass mining/energy matching analysis分类
建筑与水利引用本文复制引用
李长洪,魏晓明,张立新,周小龙,王晓南,徐敏..胶结充填体与矿石的能量匹配关系及固化时间的确定[J].采矿与安全工程学报,2017,34(6):1116-1121,6.基金项目
国家"十二五"科技支撑计划项目(2013BAB02B08) （2013BAB02B08）
北京市重点学科共建项目 （）
