突出煤层穿层钻孔喷孔周围煤体应力应变规律

Stress Strain Laws for Coal Body Around Through Beds Borehole Orifice in Outburst Coal Seam

摘要: 依据煤与瓦斯突出机理，在分析低透气性突出煤层穿层钻孔喷孔原因及煤体移动变形基础上，利用FLAC^3D软件及相关理论，对喷孔孔洞周围煤岩体的应力场分布规律、位移场分布规律等进行数值模拟研究，获得了喷孔孔洞周围煤体应力场分布规律及煤体移动变形规律。
- 突出煤层 /
- 穿层钻孔 /
- 钻孔喷孔 /
- 数值模拟 /
- 应力应变规律 /
- 煤与瓦斯突出
Abstract: According to the mechanism of coal and gas outburst, on the basis of a comprehensive analysis of through beds borehole orifice reasons and coal deformation in low permeability outburst coal seam, by using finite difference software FLAC^3Dand the related theories, the stress field distribution laws, displacement field distribution laws of coal body around drilling orifice are carried on numerical simulation, and stress field distribution and movement and deformation of coal around drilling orifice are obtained.
- outburst coal seam /
- through beds borehole /
- drilling orifice /
- numerical simulation /
- stress strain law /
- coal and gas outburst

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