采矿与安全工程学报 ›› 2013, Vol. 30 ›› Issue (3): 363-368.

• 论文 • 上一篇    下一篇

深井高应力高突区域回采巷道变形特征及控制

  

  1. 河南理工大学能源科学与工程学院,河南 焦作 454000
  • 出版日期:2013-05-15 发布日期:2013-05-15
  • 作者简介:陈晓祥(1979-),男,江苏省涟水县人,博士,副教授,从事巷道围岩控制与岩土特殊施工方面的研究。 E-mail:chenxxiang@163.com Tel:18603917949
  • 基金资助:

    国家自然科学基金项目(50874037,51174078);中国煤炭工业协会指导性研究计划项目(MTKJ2010-379)

Deformation characteristics and controlling of tailgate in high stress high gas and outburst region of deep mine

  • Online:2013-05-15 Published:2013-05-15

摘要: 针对首山一矿工作面回风巷掘进过程中围岩强烈变形的难题,综合现场调研、煤岩试验、理论分析及井下试验与实测等方法,对其变形破坏特征和巷道支护难点进行了分析,提出了针对此类巷道围岩控制的关键技术。结果表明,巷道变形速度快、底鼓严重、巷道累计变形量大是首山一矿回风平巷变形的主要特征;采用的高预应力高强锚杆支护系统、锚杆锚索协调支护技术、让抗结合、预留断面技术以及关键部位支护补强技术,有效地控制了巷道围岩的大变形。工业试验结果表明,支护后的巷道两帮变形量基本控制在180 mm以内,巷道顶板下沉量基本控制在170 mm以内,提出的支护技术对深部巷道围岩变形的控制效果良好。

关键词: 深井, 高应力, 高突区域, 巷道, 变形特征

Abstract: Concerning the intense distortion of surrounding rocks in Shoushan No.1 mine in excavation process, field investigation, coal and rock test, theoretical analysis, underground test and measurement were conducted. After analyzing deformation failure characteristics and support difficulties, the key technology of surrounding rock controlling of this type was proposed. Results indicated that rapid rate, serious floor heave, large accumulative amount are the main features of tailgate deformation. The system of high pre-stress and high strength bolt supporting, the technology of synchronous bearing of bolt and anchor, appropriate resisting and concession technology, reserved section technology, supporting and reinforcing technology of key parts are adopted to effectively control deformation. The industrial test showed that the roadway deformation of two sides was controlled within 180 mm, and roof within 170 mm, after support was provided. This proposed support technology can effectively control the surrounding rock deformation in deep roadway.

Key words: deep mine, high stress, high gas and outburst region, roadway, deformation characteristics