欢迎访问《金属矿山》杂志官方网站,今天是 分享到:

金属矿山 ›› 2008, Vol. 38 ›› Issue (06): 23-26.

• 采矿工程 • 上一篇    下一篇

巷道围岩间隔性区域断裂破坏的能量方法分析

渠涛,韩立军,王德亮,郑天翔,张先扬   

  1. 中国矿业大学深部岩土力学与地下工程国家重点实验室
  • 收稿日期:2008-04-19 出版日期:2008-06-15 发布日期:2011-07-18
  • 基金资助:

    国家自然科学基金重大项目(编号:50490273)。

Energy Analysis of Intermittent Zonal Fracture of Roadway Wallrock

Qu Tao,Han Lijun,Wang Deliang,Zheng Tianxiang,Zhang Xianyang   

  1. State Key Laboratory for Geomechanics and Deep Underground Engineering,China University of Mining & Technology
  • Received:2008-04-19 Online:2008-06-15 Published:2011-07-18

摘要: 通过真三轴试验证明了卸载可能会使岩石内产生拉应力;讨论了岩石间隔性区域断裂过程中能量转化与岩石破坏的内在机制。指出岩石间隔性区域断裂是岩石在能量耗散与能量转化下的综合结果。能量耗散使岩石产生损伤,并导致岩性劣化;能量转化则是引发岩石拉伸破坏的内在原因。推导了岩石间隔性区域断裂半径的计算公式。

关键词: 岩石力学, 能量耗散, 能量转化, 拉伸破坏, 卸载

Abstract: That unloading may lead to the tensile stress in rock is demonstrated by true triaxial pressure experiment.The intrinsic mechanism of energy conversion and failure process in the intermittent regional fracture process of rock is discussed.It is pointed out that the rock intermittent regional fracture is a composite result of rock energy dissipation and conservation.Energy dissipation leads to rock damage and lithologic deterioration while energy conversion is the internal cause for rock tensile fracture.The analytical formula for the radius of intermittent zonal fracture process of rock is deduced.

Key words: Rock mechanics, Energy dissipation, Energy conversion, Tensile fracture, Unloading