煤矿安全2017，Vol.48Issue(7)：188-191,195,5.DOI:10.13347/j.cnki.mkaq.2017.07.051
基于位移反演分析的小煤柱损伤渗透特性研究
Research on Permeability Characteristics of Small Coal Pillar Damage Based on Displacement Back Analysis
程志斌1
作者信息
- 1. 河南理工大学能源科学与工程学院,河南焦作454000
- 折叠
摘要
Abstract
The return airway of 8204 working face in a mine uses the layout way of small coal pillar protecting roadway.In order to analyze small coal pillar damage degree and coal seam permeability,based on ABAQUS numerical simulation,from the study of mining disturbance caused by fracture zone space structure,overlying strata stress field distribution characteristics,the paper analyzes small coal pillar stress state,damnage strain and temporal and spatial distribution of permeability during tunneling and mining period.The simulation results show that the coal pillar permeability coefficient near tunneling working face rapidly increases;permeability coefficient rapidly decreases as the coal pillar is forward or backward away from the tunneling working surface;the coal pillar failure behind working face is serious,and comparing with the tunneling period,the permeability of coal pillar coefficient increases greatly,and the local increase is more than two orders of magnitude.关键词
位移反演分析/数值模拟/小煤柱/损伤/渗透性Key words
displacement back analysis/numerical simulation/small coal pillar/damage/permeability分类
矿业与冶金引用本文复制引用
程志斌..基于位移反演分析的小煤柱损伤渗透特性研究[J].煤矿安全,2017,48(7):188-191,195,5.
