矿产保护与利用Issue(4)：18-22,5.DOI:10.13779/j.cnki.issn1001-0076.2016.04.004
基于细观尺度的胶结充填体破坏模拟试验研究
Simulation Research on Cemented Tailings Backfill Damage Based on Microscopic Scale
许长新 1路燕泽 1甘泽 2孙光华2
作者信息
- 1. 河北钢铁集团矿业有限公司石人沟铁矿，河北唐山063009
- 2. 华北理工大学矿业工程学院，河北唐山063009
- 折叠
摘要
Abstract
In order to analyze issues of initiation , development and interconnection of filling materi-al crack , the weibull statistical functions were adopted in describing heterogeneous backfill material from the cemented tailings backfill mesoscopic structures .The research of backfill damage mecha-nisms was carried out by using RFPA 2D numerical simulation software combined with the backfill mechanical test results .The meso damage evolution model and acoustic emission characteristics of cemented tailings backfill were analyzed .The results showed that cemented tailings backfill was a multi-phase composite material .The cemented tailings backfill was of low intensity and high het-erogeneity .Specimen damage firstly occured in the relatively weak position , then grew through the micro-fine-macro cross-scale development , and finally lead to the destruction of backfill .A-coustic emission evolution of filling rupture process reflected the dynamic characteristics of crack growth .关键词
细观破坏/非均质性/胶结充填体/数值模拟Key words
mesoscopic damage/heterogeneity/cemented tailings backfill/numerical simulation分类
矿业与冶金引用本文复制引用
许长新,路燕泽,甘泽,孙光华..基于细观尺度的胶结充填体破坏模拟试验研究[J].矿产保护与利用,2016,(4):18-22,5.
