深部固体充填矸石带与注浆联合留巷理论研究  

Theoretical Study on the Entry Retaining Combining Gangue with Grouting in Deep Solid Filling

作　　者：陈志维[1,2] 邰阳[1,2] 王涵[1,2] 齐文跃[1,2] 李百宜[1,2] 韩晓乐[1,2] 

机构地区：[1]中国矿业大学矿业工程学院,江苏徐州市221116 [2]深部煤炭资源开采教育部重点实验室,江苏徐州市221116

出　　处：《矿业研究与开发》2016年第1期27-32,共6页Mining Research and Development

基　　金：国家自然科学基金创新研究群体项目(51421003);2014年中国矿业大学重大项目培育工程专项项目(2014ZDPY02);"青蓝工程"资助项目(苏教师(2014)23号)

摘　　要：针对深部开采留巷难度大等不足,在固体充填沿空留巷技术理论的基础上,提出深部固体充填矸石带与注浆联合留巷技术。通过实验对比分析了矸石与注浆充填体的单轴抗压轴向应力-应变曲线,结果表明注浆充填体抗压承载性能较矸石显著提高;结合唐山煤矿的具体地质条件,通过数值模拟确定了该矿矸石带留巷时的矸石带合理宽度为4m,而采用矸石带与注浆联合留巷时,注浆使得顶板下沉量降低17.7%,底鼓量降低23.7%,巷旁支护体最大载荷降低36.3%,表明注浆效果显著。For the difficulty of entry retaining in deep mining, the entry retaining technology combining gangue with grouting in deep solid filling was put forward based on its theory. The axial stress-strain curves in uniaxial compression of gangue and grouting filling body were compared and analyzed through experiments. The results showed that the load-carrying property of grouting filling body was significantly greater than gangue＇s. According to the geological conditions of Tangshan Coal Mine, the reasonable width of gangue in entry retaining was determined as 4 m by numerical simulation. And as the entry retaining combining gangue with grouting, the roof subsidence, the amount of floor heave and the maximum load of roadside support were respectively decreased by 17.7%, 23.7% and 36.30/oo after grouting, which proved that the grouting had remarkable effect.

关 键 词：充填采煤 沿空留巷 矸石带 注浆加固 

分 类 号：TD353[矿业工程—矿井建设]