新型加固煤体防突注浆材料  

New grouting material to reinforce coal and eliminate outburst

作　　者：黄志安[1] 李毅飞[1] 张英华[1] 高玉坤[1] 陈升国[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：《北京科技大学学报》2010年第7期833-837,871,共6页Journal of University of Science and Technology Beijing

基　　金：教育部"第二类特色专业建设点"项目(No.TS2053)

摘　　要：针对突出煤层碎煤多、煤层软的特点,提出通过压注固化液的方式加固煤体、封堵瓦斯解析通道以减少或消除突出.以水泥和聚合物乳液复配成复合浆液,突破了已有煤体注浆材料的局限.通过实验室实验,对复合浆液的材料配比和固结体的力学强度、干缩性、密实性、保水性和黏度进行测试.选择实验效果最佳的配比进行煤粒加固,经测试,凝聚的煤粒具有良好的强度、加固效果明显.这种复合浆液用于煤体加固,具有黏结性能好、加固能力强、材料成本低和无污染等特点.Aimed at the characteristics of much crushed coal and soft coal seams in an outburst coal seam,pressure injection with solidified liquid was used to reinforce coal bodies and plug methane channels for reducing or eliminating gas outburst. A composite slurry was prepared by remixing cement with polymer latex,which breaks through the limit of present injection materials for coal bodies. The material match of the composite slurry and the strength,dry shrinkage,compactness,water retention and viscosity of the induration were tested by laboratory experiment. The best material match was selected to reinforce coal particles,and the experimental result indicates that the conglomerated coal particles have better mechanical strength and reinforcement effect. Used to reinforce coal bodies,the composite slurry has the characteristics of good viscosity,large reinforcement capability,low material cost and no pollution.

关 键 词：煤层 突出 固化液 丁苯胶乳 复合浆液 

分 类 号：TD713.3[矿业工程—矿井通风与安全]