煤炭工程 ›› 2013, Vol. 45 ›› Issue (5): 93-95.doi:

• 研究探讨 • 上一篇    下一篇

深部煤巷围岩变形与控制机理的数值模拟分析

许广   

  1. 山煤集团煤业管理晋东南分公司
  • 收稿日期:2013-01-01 修回日期:2013-01-10 出版日期:2013-05-10 发布日期:2013-05-10
  • 通讯作者: 许广 E-mail:1303146279@qq.com

Numerical Analysis of Deformation and Control of Coal Tunnel in Deep Rock

  • Received:2013-01-01 Revised:2013-01-10 Online:2013-05-10 Published:2013-05-10

摘要: 摘要:为解决深部煤巷支护难题,应用FLAC数值模拟程序研究了深部煤巷围岩变形全过程、地应力对巷道变形的影响和巷道变形控制机制。得出了围岩开挖变形应力场、位移场和塑性区变化规律,地应力对巷道变形的影响规律以及深部煤巷围岩变形控制的内在机制。结果表明:随着开采深度的加大,巷道变形对地应力的敏感度增强;底板是巷道整体稳定的关键,底板变形加剧两帮及其它部位的变形;巷道底板控制应当从围岩整体相互作用的角度实现变形控制。

关键词: 关键词:深部煤巷, 地应力, FLAC, 变形

Abstract: Abstract: An number of research were carried out on the surrounding rock deformation and control physics mechanism of deep coal tunnels through FLAC numerical simulation. The variation rule of the stress zone distribution, the displacement field and the plastic area of surrounding rock was discussed. the ground stress influence on the surrounding rock deformation was analysed. The results showed that the deep coal tunnels deformation is more sensitive to ground stress than the shallow tunnel. The conclusion was derived that the floor are the key of control of surrounding rock of deep coal tunnels deformation, the floor heave control should be reached through the whole interaction of surrounding rock.

Key words: Key words:deep coal tunnels, ground stress, FLAC, deformation

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