Roof and support and bottom yielding support with whole section and O-shape control principle for soft rock roadway and engineering practice

GAO Ming-shi; ZHAO Yi-chao; LI Ming; CAO Zhi-an; ZHANG jian

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Roof and support and bottom yielding support with whole section and O-shape control principle for soft rock roadway and engineering practice

更新时间：2026-06-25

- Roof and support and bottom yielding support with whole section and O-shape control principle for soft rock roadway and engineering practice
- Vol. 35, Issue 8, (2014)
- 作者机构：
  
  1. 中国矿业大学矿业工程学院深部煤炭资源开采教育部重点实验室,江苏,徐州,221116
  2. 中国矿业大学深部岩土力学与地下工程国家重点实验室,江苏,徐州,221116
  3. 永城煤电控股集团有限公司，河南永城,476600
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU457
- Online First：14 August 2014，
  
  Published：2014
- 稿件说明：
移动端阅览
GAO Ming-shi, ZHAO Yi-chao, LI Ming, et al. Roof and support and bottom yielding support with whole section and O-shape control principle for soft rock roadway and engineering practice[J]. 2014, 35(8).
DOI：

GAO Ming-shi, ZHAO Yi-chao, LI Ming, et al. Roof and support and bottom yielding support with whole section and O-shape control principle for soft rock roadway and engineering practice[J]. 2014, 35(8). DOI：

摘要

软弱岩体的阶段性、持续性流变，导致软岩巷道围岩深度破坏和支护失效。软岩巷道顶、帮、底三者在围岩系统稳定过程中所起的作用不同，软岩巷道围岩稳定性控制应做到整体性和协调性支护。在分析巷道顶、帮、底相互作用效应基础上，针对软岩巷道强流变四周均表现出大变形的破坏特征，提出了全断面、全支全让O型封闭控制的支护原理。该原理强调，开挖初期就应对软岩巷道顶、帮、底全断面进行强力支护，同时全断面又适时让压，在高阻支护力作用下又能适当释放围岩应力，达到对软岩巷道的整体性和协调性控制。通过力学模型对软岩巷道围岩塑性区范围和表面位移与支护力的作用关系进行了分析计算，得出巷道围岩变形破坏与支护力呈负相关关系。工程实践表明，采用该支护原理有效控制了深部软岩巷道的大变形。研究成果对类似工程实践具有一定的参考借鉴价值。

Abstract

Due to the phasic and continuous rheology of soft rock

failure of surrounding rock and supports of soft rock roadway usually happened. Based on the analysis of interaction effect between roof and support and bottom

the support principle of yielding support with whole section and O-shape control is proposed for the large deformation roadway in deep soft rock. Firstly

the roadway in deep soft rock should be supported with whole section and high strength to control initial deformation. Meanwhile

effective measures releasing pressure of surrounding rock with whole section properly

surrounding rock of roadway would be controlled to good stability

making sure that the soft rock roadway could be controlled coordinately and consistently. Through the mechanical model

relations of plastic zone and surface displacement of the soft rock roadway with supporting force are calculated; the relationship between surrounding rock deformation and support force is negative. Engineering practice showed that the large deformation of roadway in deep soft rock could be controlled efficiently with this support principle. Research results have a good value to similar engineering.

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