煤矿安全2017，Vol.48Issue(2)：196-199,4.DOI:10.13347/j.cnki.mkaq.2017.02.053
采空区及煤柱下不同位置巷道稳定性分析
Roadway Stability Analysis of Different Positions Below Goaf and Coal Pillars
摘要
Abstract
Taking No.9 seam in No.2 mining area and overlying No.8 coal seam area of Jialequan Coal Mine as the research background,we research the influence of overlying coal seam goaf and coal pillar on lower coal seam roadway.We use finite element software FLAC3D to analyze the stress distribution,yield damage range and stability around the lower coal seam roadway and overlying coal seam goad when the relative horizontal and vertical position of coal pillar is different.The research shows that the zone located under the goaf is stress decreasing area and the stress increases with the increase of vertical distance from goaf.The zone located under the coal pillar is stress increasing area and the stress decreases with the increase of depth in a certain range.The roadway should be arranged in stress decreasing area of goaf and should be more than 7 m from the pillar.In the case of a special area,the support should be strengthened.关键词
近距离煤层/稳定性控制/采空区/巷道支护Key words
close distance coal seam/stability control/goaf/roadway support分类
矿业与冶金引用本文复制引用
杨宗一,苏学贵,张锁,张赞,王堂..采空区及煤柱下不同位置巷道稳定性分析[J].煤矿安全,2017,48(2):196-199,4.基金项目
国家自然科学基金资助项目(51274145) （51274145）
山西省自然科学基金资助项目(2015011066) （2015011066）
