矿业安全与环保
礦業安全與環保
광업안전여배보
MINING SAFETY & ENVIRONMENTAL PROTECTION
2015年
2期
52-55,60
,共5页
孤岛工作面%塑性区%小煤柱%数值模拟%围岩控制%联合支护
孤島工作麵%塑性區%小煤柱%數值模擬%圍巖控製%聯閤支護
고도공작면%소성구%소매주%수치모의%위암공제%연합지호
isolated working face%plastic zone%smalll pillar%numerical simulation%surrounding rock control%combined support
通过理论分析、数值模拟,研究了孤岛工作面塑性区及垂直应力分布情况,确定出工作面预留煤柱合理宽度为8．0 m,模拟了不同支护方案下巷道围岩塑性区分布情况。结合锚索梁钢带及注浆联合支护方案、矿山压力观测数据,分析了孤岛工作面小煤柱沿空掘巷的矿山压力显现特征,可为后续孤岛工作面沿空掘巷围岩控制提供一定的参考。
通過理論分析、數值模擬,研究瞭孤島工作麵塑性區及垂直應力分佈情況,確定齣工作麵預留煤柱閤理寬度為8．0 m,模擬瞭不同支護方案下巷道圍巖塑性區分佈情況。結閤錨索樑鋼帶及註漿聯閤支護方案、礦山壓力觀測數據,分析瞭孤島工作麵小煤柱沿空掘巷的礦山壓力顯現特徵,可為後續孤島工作麵沿空掘巷圍巖控製提供一定的參攷。
통과이론분석、수치모의,연구료고도공작면소성구급수직응력분포정황,학정출공작면예류매주합리관도위8．0 m,모의료불동지호방안하항도위암소성구분포정황。결합묘색량강대급주장연합지호방안、광산압력관측수거,분석료고도공작면소매주연공굴항적광산압력현현특정,가위후속고도공작면연공굴항위암공제제공일정적삼고。
In this paper, study was made on the distribution of the plastic zone and the vertical stress in the isolated working face by theoretical analysis and numerical simulation, a 8. 0 m-mide coal pillar to be reserved for such face was determined and the distribution of the plastic zone of the roadway surrounding rock in different support scheme was simulated. Based on the combined support scheme using anchor cable, steel strip and grouting and the mine pressure observation data, analysis was carried out on characteristics of ground behaviours of the small coal pillar roadway driving along the gob of the isolated working face, which can provide a certain reference for the surrounding rock control of the roadway driving along the gob of the subsequent isolated face.
