孤岛工作面回采巷道能量特征及位移演化规律  

Energy Characteristics and Displacement Evolution of Mining Gateway in Isolated Island Face

作　　者：李良贺[1] 王帅[1] 徐传伟[2] 

机构地区：[1]山东能源新汶矿业集团翟镇煤矿,山东泰安271200 [2]山东科技大学矿业与安全工程学院,山东青岛266590

出　　处：《煤》2017年第9期15-16,27,共3页Coal

基　　金：国家自然科学基金青年基金资助项目(51504145)

摘　　要：以山东某煤矿5311工作面为背景,运用FLAC3D数值模拟,分析了该孤岛工作面顶板能量分布特征、巷道能量分布特征及工作面回采时巷道位移演化规律。分析表明,随着孤岛工作面的回采,基本顶及工作面巷道周围岩层形成能量积聚区域,表现出"煤体-围岩"系统的突然性释放。巷道采空帮聚集的弹性应变能远大于回采帮,发生冲击地压的危险性较大。巷道顶板最大位移量为115 mm,巷道顶板变形量明显大于两帮的变形量。Based on the FLAC3D numerical simulation, the energ}r distribution characteristics of the roof, the distribution characteristics of the troughs and the evolution of the troughs in the working face are analyzed by using the FLAC3D numerical simulation. The analysis shows that with the recoveiy of the island face, the basic top and the formation area of the strata around the working surface form a steady or abrupt release of the ＂coal- rock＂ system. The elastic strain energ}r of the chute is much larger than that of the chute, and the risk of impact is greater. The maximum displacement of the roof is 115 mm, and the deformation of the roof is obviously larger than that of the two gangs.

关 键 词：孤岛工作面 弹性应变能 巷道位移 数值模拟 

分 类 号：TD353.6[矿业工程—矿井建设]