某矿膏体充填物料配比优化研究  

Optimization of Paste Filling Materials Mixing Ratio in a Mine

作　　者：闫其盼 吴爱祥[1] 王贻明[1] 李涛[1] 陈勋[1] 张友志[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《金属矿山》2015年第7期39-42,共4页Metal Mine

基　　金：国家自然科学基金重点项目(编号:50934002);国家自然科学基金项目(编号:51074013);教育部长江学者和创新团队发展计划项目(编号:IRT0950);"十二五"国家科技支撑计划项目(编号:2012BAB08B02)

摘　　要：某矿采用上向分层充填采矿法,对充填体强度要求较高,基于一维应力波理论及充填体抗动载特性,充填体的抗压强度不得低于1.2 MPa。充填物料配比是影响该工艺技术经济指标的关键参数。根据现场的实际情况,运用四因素三水平的均匀设计方法研究充填料浆浓度、尾库比(全尾砂与库存尾砂用量比)、灰砂比和添加剂硫化钠添加量对充填体强度及凝结性能的影响,寻求最优的充填配比。结果表明:在满足充填强度的前提下,当硫化钠添加量为0.4%时,灰砂比宜为1∶8,尾库比为8∶1,充填料浆浓度控制在77%;当硫化钠添加量为0.6%时,灰砂比宜为1∶9,尾库比为8∶1,充填料浆浓度控制在76%。The upward-slicing cut and fill stoping method was used in a mine which has higher demand on the strength of filling body. Based on one-dimensional stress wave theory and dynamic load resistance characteristics,the compressive strength of filling body should be higher than 1. 2 MPa. The filling materials mixing ratio was the key factor which influenced the technical and economical indexes. To seek for the optimum filling ratio,and according to the actual conditions in mining and beneficiation,the four-factor three-level uniform design method was used to study the influences of paste concentration,total tailingpond tailing ratio,cement-sand ratio and the additive amount of sodium sulfide to the strength and condensation of filling body.The results showed that： On the premise of meeting the filling strength,when the additive amount of sodium sulfide is 0. 4%,cement-sand ratio should be controlled at 1 ∶ 8,plant-pond tailings ratio at 8 ∶ 1 and the paste concentration at around 77%;when the additive amount of sodium sulfide is 0. 6%,cement-sand ratio should be controlled at 1 ∶ 9,plant-pond tailings ratio at 8 ∶ 1 and the paste concentration at around 76%.

关 键 词：充填强度 凝结时间 配合比 均匀设计法 

分 类 号：TD853[矿业工程—金属矿开采]