石门揭穿突出煤层预留岩柱最小厚度的确定  

The Least Thickness Determination of Reservation Rock Pillar in Crosscut Uncovering Outburst Seam

作　　者：朱立凯[1,2] 杨天鸿[1,2] 赵洪亮[3] 曹垚林[2] 于庆磊[2] 

机构地区：[1]东北大学,辽宁沈阳110819 [2]煤炭科学研究总院沈阳研究院,辽宁沈阳110016 [3]中国石油天然气股份有限公司抚顺石化分公司热电厂,辽宁抚顺113004

出　　处：《煤矿安全》2012年第10期15-17,共3页Safety in Coal Mines

摘　　要：针对目前石门揭穿突出煤层仅靠经验确定的情况,从岩石力学角度,采用快速拉格朗日数值计算方法,并对东山煤矿东二石门揭穿3#突出煤层时预留厚度分别为5、3、2、1 m的岩柱进行研究,研究结果直观形象地展现了石门掘进过程中不同预留岩柱承受的应力分布状态和塑性破坏程度,从而确定了合理的最小预留岩柱厚度。Aiming at the present situation of crosscut uncovering outburst seam relying on experience,from the perspective of rock mechanics,using fast Lagrangian numerical method,reservation thickness of 5,3,2 and 1 m rock pillar were studied when Dongshan coal mine Dong＇er crosscut uncovered 3# outburst seam.Research results visually showed the stress distribution and plastic damage of different rock pillars beared in crosscut tunneling process,which determined a reasonable minimum reservation rock pillar thickness.

关 键 词：石门揭煤 突出煤层 预留岩柱 快速拉格朗日 

分 类 号：TD713[矿业工程—矿井通风与安全]