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金属矿山 ›› 2011, Vol. 40 ›› Issue (05): 49-52+60.

• 采矿工程 • 上一篇    下一篇

深部动压巷道锚注加固技术研究与应用

刘增辉1,2,高谦1,孟祥瑞2,赵光明2   

  1. 1.北京科技大学;2.安徽理工大学
  • 出版日期:2011-05-12 发布日期:2011-05-12
  • 基金资助:

    国家高技术研究发展计划(863计划)项目(编号:2008AA062104),“十一五”国家科技支撑计划项目(编号:2008BAB32B01),国家自然科学基金面上项目(编号:51074003),安徽高校省级自然科学研究重点项目(编号:KJ2011A080)。

Research and Application of Bolt and Grouting Reinforcement Technology to Deep Dynamic Roadway

Liu Zenghui1,2,Gao Qian1,Meng Xiangrui2,Zhao Guangming2   

  1. 1.University of Science and Technology Beijing;2.Auhui University of Science & Technology
  • Online:2011-05-12 Published:2011-05-12

摘要: 为了有效控制受采动影响的刘桥一矿Ⅱ46轨道上部车场、绞车房及大巷围岩破坏,从工程布置、支护结构和围岩强度分析围岩破坏原因,在现有工程的基础上提出了相应的加固参数设计和施工工艺,并验算了注浆加固圈的抗力为9.10 MPa,裂隙岩体注浆加固半径为2.24 m。通过对加固前后围岩变形的观测数据分析显示:锚注加固前两帮的平均移近速度为1.5 mm/d,顶底板移近速度为4.0 mm/d;加固后的7~28 d两帮平均移近速度为0.75 mm/d,顶底板移近速度为2.0 mm/d。从加固效果来看,加固方案能有效地控制受采动影响的围岩变形破坏。  

关键词: 深部巷道, 采动影响, 锚注加固, 联合支护

Abstract: In order to effectively control the destruction of theⅡ 46 rail upper yard, the winder chamber and the surrounding rock of roadway in Liuqiao No.1 Mine caused by the mining, the factors for the destruction of surrounding rocks are firstly analyzed from aspects of engineering layout, support structure and surrounding rock strength.On the basis of the existing project, the corresponding reinforcement parameters and construction technology are proposed, and the check computation for the resistance 9.10 MPa of the grouting circle and the fractured rock grouting radius of 2.24 m are made.The observation data after and before the surrounding rock deformation show: the average approaching speed of two sides before anchor-grouting is 1.5mm/d, and the roof and floor approaching rate is 4.0 mm/d; the average approaching rate is 0.75 mm/d and the roof and floor approaching rate is 2.0 mm/d after reinforcement for 7~28 d.From the reinforcing effect view, the reinforcement program can effectively control the surrounding rock deformation caused by mining.

Key words: Deep roadway, Mining influence, Bolt-grouting reinforcement, Joint support