煤炭工程 ›› 2017, Vol. 49 ›› Issue (4): 74-76.doi: 10.11799/ce201704023

• 研究探讨 • 上一篇    下一篇

上湾煤矿近距离煤层开采过煤柱矿压规律研究

刘刚领1,朱卫兵2,佘永明3,沙猛猛1,张文波1   

  1. 1. 中国矿业大学矿业工程学院
    2. 中国矿业大学(徐州)
    3. 神华神东煤炭集团有限责任公司 上湾煤矿
  • 收稿日期:2016-05-15 修回日期:2016-07-29 出版日期:2017-04-09 发布日期:2017-05-16
  • 通讯作者: 朱卫兵 E-mail:zweibing@163.com

Study on rock pressure theory of crossing upper coal pillar in close distance seams in Shangwan coal mine

  • Received:2016-05-15 Revised:2016-07-29 Online:2017-04-09 Published:2017-05-16

摘要: 针对上湾煤矿近距离煤层工作面过煤柱安全开采问题,综合采用理论分析、数值模拟及工程实践的方法,就上湾煤矿12302工作面出煤柱矿压显现进行了研究。结果表明:上煤层工作面切眼深孔强制放顶诱发的基本顶结构提前切落有利于下煤层工作面安全平稳推过|此时模拟预计浅埋近距离下煤层工作面推出煤柱时支架活柱下缩量仅为133mm,工作面支架所需的工作阻力约11000kN|12302工作面过煤柱开采实践矿压显现缓和,未发生动载矿压现象。

关键词: 浅埋煤层, 近距离煤层, 矿压显现, 深孔强制放顶, 关键层

Abstract: Based on the safe mine problem in Shangwan coal mine close distance seams, researched rock pressure phenomenon of pushing through coal pillar in Shangwan mine No.12302 workface used the methods of theoretical analysis, numerical simulation and engineering practice. Research results showed that: the advanced roof structure falling caused by depth borehole forced roof caving in overlying coal seam is helpful for the coal seam workface pushing through coal pillar smoothly;result of numerical simulation showed that the descending amount of pistom is expected to 133mm, at the same time, the reasonable working face supporting intensity of support resistance is about 11 000 kN; engineering practice results indicate that rock pressure in 12302 workface only appeared slow pressure sometimes. Research results will provide reference experience when workface cross upper coal pillar safely in similar conditions of Shendong coal mines area.

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