煤矿高浓度胶结充填材料配比研究  

Research on Ratio of High Concentration Cementation Stowing Materials in Coal Mine

作　　者：杨宝贵[1] 韩玉明[1] 杨鹏飞[1] 李杨[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤炭科学技术》2014年第1期30-33,共4页Coal Science and Technology

基　　金："十一五"国家科技支撑计划资助项目(2009BAB48B02)

摘　　要：为得到煤矿高浓度胶结充填材料的合理配比,在分析煤矿充填开采特点、煤矿对充填材料要求及高浓度胶结充填现状的基础上,分别研究了以粉煤灰、煤矸石、普通硅酸水泥及水为主要充填材料在未添加与添加外加剂时的合理质量配比。结果表明:未添加外加剂时,普通硅酸水泥、粉煤灰、煤矸石、水在质量配比10%∶20%∶50%∶20%时充填材料所形成的充填体效果较好,在该配比的基础上添加普通硅酸水泥质量8%的外加剂,制成的料浆浓度为79%,该充填料浆流动性好,不沁水,无离析,坍落度为280 mm,28 d后抗压强度达5.2 MPa,达到了较好的充填效果。In order to obtain the reasonable ratio of high concentration cementation stowing materials for coal mine, this paper researched the stowing materials which was mainly composed by fly ash, gangue, ordinary portland cement and water based on the characteristic of sto- wing mining, the requirement of stowing materials and the technology of high concentration cementation stowing.The tests were carried out under the condition of the materials without and with the admixture respectively.Without the admixture, the proper weight ratio of common cement,fly ash, gangue, water was 10% ： 20% ： 50% ： 20%,on this basis of added admixture which was taken up 8% of the ordinary portland cement＇s weight, this stowing material concentration was 79%.The stowing materials had good fluidity, non bleeding, slump was 280 mm, after 28 days compressive strength was 5.2 MPa,which could achieve good stowing effect.

关 键 词：高浓度胶结充填 充填开采 材料配比 外加剂 

分 类 号：TD823.7[矿业工程—煤矿开采]