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金属矿山 ›› 2012, Vol. 41 ›› Issue (12): 127-131+135.

• 综合利用 • 上一篇    下一篇

矸石膏体充填材料力学特性试验

张新国1,2,江宁1,张玉江1,江兴元1,张保良1   

  1. 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
  • 出版日期:2012-12-15 发布日期:2012-12-28
  • 基金资助:

    * 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)。

Study on Mechanical Properties of Coal Waste Paste Filling Materials

Zhang Xinguo1,2,Jiang Ning1,Zhang Yujing1,Jiang Xingyuan1,Zhang Baoliang1   

  1. 1.College of Resource and Environmental Engineering,Shandong University of Science and Technology;2.Key Laboratory of Ministry of Education for Disaster Prevention and Control
  • Online:2012-12-15 Published:2012-12-28

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。

关键词: 矸石膏体, 物化性能, 配比试验, 力学特性

Abstract: 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.

Key words: Coal waste paste, Physicochemical properties, Proportion experiment, Mechanical properties