采矿与安全工程学报 ›› 2014, Vol. 31 ›› Issue (6): 945-949.

• 论文 • 上一篇    下一篇

清水矿深部软岩巷道破坏机理及恒阻大变形控制对策

  

  1. 1.中国矿业大学(北京)深部岩土力学与地下工程国家重点实验室,北京 100083;2.中国矿业大学(北京) 力学与建筑工程学院,北京 100083;3.中国煤炭进出口公司,100011;4.大连大学院士创业园,辽宁 大连 116622
  • 出版日期:2014-11-15 发布日期:2014-12-01
  • 作者简介:郭志飚(1976—),男,吉林省农安县人,副教授,从事深部岩石力学及深井软岩支护方面的研究。 E-mail:guozhibiaobj@126.com Tel:13910283906
  • 基金资助:

    国家自然科学基金项目(51374214,51479195);中央高校基本科研业务费专项资金项目(2009QL06)

Failure mechanism and constant resistance large deformation control measures of deep soft rock in Qingshui Coal Mine

  • Online:2014-11-15 Published:2014-12-01

摘要: 随着开采深度的增大,深部巷道在复杂高应力场的作用下,表现出严重底鼓和顶板下沉等软岩大变形破坏现象,沈北矿区清水矿深部软岩巷道变形破坏尤其严重。本文通过对地层岩性和地应力场分布规律等的研究,得出了传统支护条件下深部软岩巷道产生大变形破坏的原因和机理,提出了通过恒阻伸长吸收变形能、控制围岩变形为核心,以恒阻大变形锚杆耦合支护为主体的深部软岩控制对策,现场应用效果良好,为深部软岩大变形巷道支护提供了新的方法。

关键词: 深部, 软岩巷道, 破坏机理, 恒阻大变形锚杆

Abstract: With mining depth increasing, deep roadways emerge serious floor heave and roof convergence by complex stress field. Softrock roadways deformation of Qingshui Coal Mine is the most severe in Shenbei Mining Area. By researching on lithology and stress field, the paper draws reasons and failure mechanism of the typical roadway which use the traditional supporting methods. The deep soft rock supporting technology which is constant resistance large deformation bolt coupling technology was put forward. The technology control roadway deformation by constant resistance and energy absorption. The support method works well on site which provides a new way of control deep soft rock roadway large deformation.

Key words: deep, soft rock roadway, failure mechanism, constant resistance large deformation bolt