煤炭工程 ›› 2015, Vol. 47 ›› Issue (4): 44-46.doi: 10.11799/ce201504015

• 施工技术 • 上一篇    下一篇

近距离煤层群煤柱下巷道支护参数优化及工程实践

钱坤1,丁自伟2,孟宪锐1,张杰3   

  1. 1. 中国矿业大学(北京)
    2. 西安科技大学
    3. 西安科技大学能源学院
  • 收稿日期:2015-02-06 修回日期:2015-03-27 出版日期:2015-04-10 发布日期:2015-04-10
  • 通讯作者: 孟宪锐 E-mail:306449075@qq.com

Support Parameters Optimization and Engineering Practices of Roadway under Section Pillar of the Adjacent Coal Seam

  • Received:2015-02-06 Revised:2015-03-27 Online:2015-04-10 Published:2015-04-10

摘要: 针对近距离煤层群煤柱下巷道变形严重、支护困难等问题,以平朔井工二矿11#煤层21101工作面运输平巷为工程背景,采用FLAC3D数值模拟软件对21101运输平巷不同支护方案条件下的应力分布与周边位移量进行了对比分析,确定了最终设计支护方案,并进行了现场工程试验。实践表明,新设计方案支护后巷道15d内顶底板移近量为86mm,两帮移近量为107mm,说明设计支护方案能够有效地控制巷道变形,设计支护参数合理。

关键词: 近距离煤层群, 巷道支护, 数值模拟, 现场观测

Abstract: In order to solve the support difficulty of roadway under section pillar of the adjacent coal seam, with the conditions of working face 21101 in Pingshuo No.2 underground mine, studied the stress distribution and displacement under different support plans with Flac3D, determined the optimum support plan. Practice results show that the roadway roof to floor convergence was 80mm and the movement between ribs was 85mm after 15 days of the new support plan, which means the roof sinking has been effectively controlled and the support parameters are reasonable.

Key words: Adjacent coal seams, Roadway Support, Numerical Modeling, Field measurement

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