全尾砂戈壁集料膏体凝结性与流动性研究  

Study on Coagulability and Fluidity of Unclassified Tailings Paste with Gobi Aggregates

作　　者：李公成[1,2] 王洪江[1,2] 吴爱祥[1,2] 彭乃兵[1,2] 杨鹏[1,2] 杨锡祥 周发陆 

机构地区：[1]金属矿山高效开采与安全教育部重点实验室 [2]北京科技大学土木与环境工程学院 [3]招金矿业股份有限公司

出　　处：《金属矿山》2013年第9期34-36,40,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(I编号:RT0950);"十二五"国家科技支撑计划项目(编号:2012BAB08B02)

摘　　要：以某矿戈壁集料为粗骨料的充填膏体为试验料浆,采用正交设计法设计试验方案,研究质量浓度、灰砂比、尾砂与戈壁集料比及泵送剂添加量对抗压强度和塌落度的影响规律。对试验结果运用极差分析和多元回归分析方法分析。结果表明:灰砂比对膏体抗压强度的影响最大,各因素对塌落度的影响基本相当。根据矿山强度要求,假底充填配比应为:浓度77%～78%,尾砂与戈壁集料比2.5～3.5,灰砂比0.16～0.17,泵送剂添加量为1.5%～2.0%;打顶充填配比为:浓度77%～78%,尾砂与戈壁集料比3～4,灰砂比0.09～0.11,泵送剂添加量为1.5%～2.0%。Taking the coarse aggregate paste with gobi aggregates as the experimental slurry, the orthogonal design method was adopted to design the experimental scheme to study the influencing rules of mass concentration, cement-sand ra- tio, tailing-aggregate ratio and the addition of pumping agent to the compressive strength and the collapsed slump. Test re- sults are analyzed by the range analysis and the multiple regression analysis method. The results showed that the cement- sand ratio has the greatest influence on compressive strength of the paste and these factors have the similar influence on the collapsed slump. According to the requirement of strength from the mine, the filling ratio of false bottom should be that the concentration ranges from 77 % to 78 %, the tailingc/gobi aggregate ratio is from 2.5 to 3.5, the cement-sand ratio is from 0.16 to 0.17, and the addition of pumping aid is from 1.5% to 2.0% ; the filling ratio of false roof should be that the con- centration is from 77% to 78% ,the tailingc/gobi aggregate ratio is from3.0 to 4.0,the cement-sand ratio is from 0.09 to 0.11 ,and the addition of pumping aidis from 1.5% to 2.0%.

关 键 词：全尾砂 戈壁集料 抗压强度 塌落度 

分 类 号：TD853.343[矿业工程—金属矿开采]