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金属矿山 ›› 2011, Vol. 40 ›› Issue (06): 32-35.

• 采矿工程 • 上一篇    下一篇

喷射钢纤维混凝土在鹤煤八矿深部软岩巷道支护中的应用

武志德1,周宏伟1,刘金锋1,张涛1,师俊泽2   

  1. 1.中国矿业大学(北京)分形与岩石力学研究所;2.河南煤化集团鹤煤八矿
  • 出版日期:2011-06-08 发布日期:2011-06-09
  • 基金资助:

    创新群体研究项目(编号:50221402)。

The Application of Steel Fiber Concrete in Support of Soft Rock Roadway at Depth in the No.8 Hebi Coal Mine

Wu Zhide1,Zhou Hongwei1,Liu Jinfeng1,Zhang Tao1,Shi Junze2   

  1. 1.Institute of Rock Mechanics and Fractals, China University of Mining and Technology;2.Hebi No.8 Coal Mine of Henan Coal Chemical Industry Group
  • Online:2011-06-08 Published:2011-06-09

摘要: 对钢纤维混凝土与素混凝土的整体力学特性进行了对比分析,研究了钢纤维的阻裂、增强、增韧机理。针对鹤煤八矿深部软岩巷道变形特点,分析了巷道变形破坏原因,提出通过素喷混凝土中掺入适量钢纤维的方法来改善混凝土的整体力学性能,使之更好地适应软岩巷道大变形的需要。借助数值模拟软件FLAC3D对支护方案进行了对比分析,并提出了合理的支护方案。该方案在鹤煤八矿3105岩中巷试验获得成功,取得了良好的技术经济效益。  

关键词: 软岩巷道, 钢纤维混凝土, 支护, 数值模拟

Abstract: The whole mechanical properties between steel fiber concrete and plain concrete are compared and analyzed, and the mechanism of the crack resistance, reinforcement, and toughing of steel fiber are studied. According to the deformation characteristics of the deep soft rock roadway in No.8 Hebi Coal Mine, the factors for roadway deformation is analyzed. The approach of improving the overall mechanical properties through incorporation of fiber in plain concrete is proposed, which can adapt with the large deformation of soft rock roadway. The numerical model with FLAC3D is employed to compare the support schemes and a reasonable support scheme is put forward. The support scheme is practiced successfully at the middle section of 3105 tunnel of Hebi No.8 coal mine with the excellent technical and economic results obtained.

Key words: Soft rock roadway, Steel fiber concrete, Support, Numerical simulation