矸石膏体充填材料力学特性试验  

Study on Mechanical Properties of Coal Waste Paste Filling Materials

作　　者：张新国[1,2] 江宁[1] 张玉江[1] 江兴元[1] 张保良[1] 

机构地区：[1]山东科技大学资源与环境工程学院 [2]矿山灾害预防控制教育部重点实验室

出　　处：《金属矿山》2012年第12期127-131,135,共6页Metal Mine

基　　金：国家自然科学基金项目(编号:50874070);山东省自然科学基金项目(编号:Y2008F01);山东省高等学校科技计划项目(编号:J11LE14);山东科技大学研究生创新基金项目(编号:YCA120306)

摘　　要：以淄博矿业集团岱庄煤矿膏体充填为研究背景,在对煤矸石、粉煤灰等充填材料物化性能研究的基础上,通过均匀试验得出了膏体充填材料最优配比,同时对养护28 d后的膏体材料力学性能进行了系统研究并与所置换的煤的力学性能做了对比分析。研究结果表明膏体充填材料在有围压作用下有较高的残余强度,表现出明显塑性强化特征,同时得出膏体材料的内摩擦角和黏结系数;与充填置换的煤的力学性能对比表明膏体材料塑性变形比煤更显著。Taking paste filling in Daizhuang coal mine of Zibo mining group as the study background,based on the physicochemical properties of gangue,fly ash etc,the uniform experiments concluded the optimal proportion of paste filling material.Then,studies on mechanical properties of paste are carried out which is maintained for 28 d,the contractive analysis on mechanical properties between paste and replacement coal is made.The results show that the filling materials have greater residual strength,a clear plastic strengthening characteristics under action of the ambient pressure.Meanwhile,the angle of internal friction and the binding coefficient of the paste material are gained.The plastic characteristic of the paste materials is more obvious than that of coal through the contrast tests with the mechanical properties of the replaced coal.

关 键 词：矸石膏体 物化性能 配比试验 力学特性 

分 类 号：TD853.34[矿业工程—金属矿开采]