煤炭工程 ›› 2014, Vol. 46 ›› Issue (1): 53-55.doi: 10.11799/ce201401017

• 施工技术 • 上一篇    下一篇

富水软岩巷道变形机理分析及控制技术研究

翟锦   

  1. 神华宁夏宁煤集团清水营煤矿
  • 收稿日期:2013-03-20 修回日期:2013-04-17 出版日期:2014-01-10 发布日期:2014-01-10
  • 通讯作者: 翟锦 E-mail:zhaijin1234@163.com

Soft Rock Roadway Deformation Analysis and Control In Water-Rich Conditions

  • Received:2013-03-20 Revised:2013-04-17 Online:2014-01-10 Published:2014-01-10

摘要:

地下水加速巷道围岩弱化,严重影响巷道受力变形,是导致软岩巷道工程失稳主要诱因。本文通过对地质条件及巷道围岩环境等分析,得出造成软岩巷道变形主导因素是应力场与渗流场耦合作用导致巷道围岩有效应力变化和塑性区失稳,地下水通过渗透与力学挤压形成的导水裂隙带诱使围岩力学性质逐渐劣化。实践表明,加强回采巷道支护并有针对性的疏放水体,可以从根源减弱巷道围岩变形,达到控制效果。

关键词: 富含水, 软岩, 巷道变形, 疏放水

Abstract:

The main factors what lead to instability of soft rock tunnel is Groundwater,it weaked the surrouding of roadway quickly and impacted on deformation mechanism of roadway seriously. By analysis of the geological condition and the surrounding environment.the deformation of soft rock roadway cause the change of surrounding rock stress and plastic zone instability,under the coupling of stress field and seepage field.Groundwater induce wall rock mechanics features become bad gradually because of infiltration and force extrusion.The practice shows that strengthen support and draining water can weaken roadway deformation from the roots.

Key words: water-rich conditions, soft rock, roadway deformation, draining water