《黄金》杂志(月刊) 第39卷 总第415期
2018年07月 第07期
目次
采矿工程
  • 分级尾砂胶结充填体力学及声发射特性试验研究……雍伟勋,王凯
  • 摘 要:胶结充填体力学性质、充填强度和损伤过程是影响矿山充填安全的重要因素。对单调加载条件下矿山尾砂胶结充填体力学及声发射特性进行研究,制作了不同配比条件下的圆柱型充填体试件,测试其单轴抗压强度、弹性模量、泊松比、应力-应变曲线和声发射参数,研究分级尾砂胶结充填体的变形破坏特征。研究结果表明,分级尾砂胶结充填体养护时间和单轴抗压强度之间存在指数关系,提出分级尾砂胶结充填体强度-养护时间预测模型,从而为探究分级尾砂胶结充填体力学参数的成因及对其调节提供依据。

    Experimentalstudy on mechanical property and acoustic emission characteristics of cementfilling with graded tailings……Yong Weixun,Wang Kai

    AbstractThe mechanical property,strength and damage process of the cemented fillingbody are key factors affecting mine filling safety.The mechanical property andacoustic emission characteristics of cemented tailings filling body undermonotonic loading are studied.Cylinder specimens under different proportioningconditions are made,their uniaxial compressive strength,elastic modulus,poisson’sratio,stress-strain curve and acoustic emission parameters are tested anddeformation and failure characteristics of graded tailings cemented fillingbody are studied.The results show that there is some functional relationshipbetween curing time and uniaxial compressive strength of graded tailingscemented filling body.A prediction model of strength-curing time of cementedfilling body is put forward so as to explore the causes of mechanical parametersof graded cemented tailings filling body and provide basis for its adjustment.

    Keywords:graded tailings; cement filling; filling body; mechanical parameter;deformation characteristics; acoustic emission characteristics

  • 关键词:分级尾砂;胶结充填;充填体;力学参数;变形特征;声发射特性
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