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初始温度条件下全尾胶结膏体损伤本构模型

王勇 吴爱祥 王洪江 王贻明 崔亮 靳斐 周勃 沈家华

工程科学学报2017,Vol.39Issue(1):31-38,8.
工程科学学报2017,Vol.39Issue(1):31-38,8.DOI:10.13374/j.issn2095-9389.2017.01.004

初始温度条件下全尾胶结膏体损伤本构模型

Damage constitutive model of cemented tailing paste under initial temperature effect

王勇 1吴爱祥 1王洪江 1王贻明 1崔亮 2靳斐 1周勃 1沈家华3

作者信息

  • 1. 北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083
  • 2. 渥太华大学土木工程学院,渥太华K1N 6N5,加拿大
  • 3. 中色非洲矿业有限公司,基特韦,赞比亚
  • 折叠

摘要

Abstract

It is a universal phenomenon for all the mines that paste-filling material arrives at stope at different initial temperatures.The strength properties and stress-strain relation of paste at different initial temperatures have effect on the mining-filling cycle and the dilution of adjacent stope mining.A series of uniaxial compressive strength tests were performed on hardened paste with initial temperatures of 2,20,35 and 50 ℃ to obtain the stress-strain evolution curves at different initial temperatures.The damage constitutive models of paste at different initial temperatures were established on the basis of theoretical derivation and experimental results.A temperature-time coupling damage constitutive model was further proposed according to parameter regression of the established models.Finally,the temperature-time coupling damage constitutive model was embed into the solid mechanics module of Comsol software,which is for uniaxial compressive experiment simulation.The simulation results show good accordance with the experimental stressstrain curves,verifying the reliability of the proposed constitutive model.

关键词

膏体/温度/应力-应变曲线/本构模型/数值模拟

Key words

paste/temperature/stress-strain curves/constitutive models/numerical simulation

分类

矿业与冶金

引用本文复制引用

王勇,吴爱祥,王洪江,王贻明,崔亮,靳斐,周勃,沈家华..初始温度条件下全尾胶结膏体损伤本构模型[J].工程科学学报,2017,39(1):31-38,8.

基金项目

北京市科委项目(Z161100001216002) (Z161100001216002)

国家自然科学基金资助项目(51574013,51374034,51674012) (51574013,51374034,51674012)

“十二五”国家科技支撑计划课题(2013BAB02B05) (2013BAB02B05)

工程科学学报

OA北大核心CSCDCSTPCD

2095-9389

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