急倾斜特厚煤层水平分段综放采动应力分布规律研究

doi:10.11799/ce201609027

煤炭工程 ›› 2016, Vol. 48 ›› Issue (9): 91-94.doi: 10.11799/ce201609027

急倾斜特厚煤层水平分段综放采动应力分布规律研究

杨锦峰

神华包头能源有限责任公司

收稿日期:2015-10-21 修回日期:2015-12-04 出版日期:2016-09-10 发布日期:2016-10-17
通讯作者: 杨锦峰 E-mail:526643029@qq.com

Study on Mining Stress Distribution regularity of Steep and Thick Coal Seam in Adaohai Mine

Received:2015-10-21 Revised:2015-12-04 Online:2016-09-10 Published:2016-10-17

摘要/Abstract

摘要： 为了研究急倾斜特厚煤层采动应力的分布规律，采用FLAC3D与现场实际观测的方法对阿刀亥煤矿急倾斜特厚煤层水平分段综放开采条件下的水平应力、垂直应力、剪应力的分布情况进行了模拟和实际观测。模拟结果表明：工作面超前支承压力影响范围小，但侧向支承压力影响非常显著|工作面两巷附近有明显的应力集中现象|底板巷承载的应力弱于顶板巷，但相对位移却高于顶板巷。现场实测结果表明：底板巷的变形以底鼓和顶板下沉为主，顶板巷则以帮鼓和巷道整体变形为主|急倾斜煤层水平分层开采上层采动对下方工作面影响明显，超前显著影响距离约为30m。

关键词: 急倾斜煤层, 特厚煤层, 水平分段, 综放开采, 应力分布

Abstract: In order to study the mining stress distribution regulation of the steep-inclined and extremely thick coal seam, use the FLAC3D numerical simulation software and the field measurement two methods to study the horizontal stress, vertical stress and shear stress distribution regulation of steep-inclined and extremely thick coal seam sectioned fully-mechanized top-coal caving in A dao-hai. According to the numerical simulation results, the influence scope of lead abutment pressure in working face is small while the side abutment pressure has a greater influence scope. Nearby the working face roadway show a obviously stress concentration phenomenon. The stress of the floor roadway is weaker than the roof roadway, but the floor roadway has a larger relative displacement than the floor roadway. The floor roadway’s deformation is mostly floor heave and roof subsidence while the roof roadway’s deformation is mostly global deformation. Measured data shows that mining of the upper slice has a strong influence in the lower slice in the steep-inclined and extremely thick coal seam sectioned fully-mechanized top-coal caving, the lead influence distance is 30m.

中图分类号:

TD323

杨阳，杨锦峰. 急倾斜特厚煤层水平分段综放采动应力分布规律研究[J]. 煤炭工程, 2016, 48(9): 91-94.

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急倾斜特厚煤层水平分段综放采动应力分布规律研究

Study on Mining Stress Distribution regularity of Steep and Thick Coal Seam in Adaohai Mine

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