• 中文核心期刊
  • 中国科技核心期刊
  • RCCSE中国核心学术期刊

围压效应下煤岩组合体破坏与裂纹发育的细观模拟

张为民, 卜滕滕

张为民, 卜滕滕. 围压效应下煤岩组合体破坏与裂纹发育的细观模拟[J]. 煤矿安全, 2017, 48(11): 45-48,52.
引用本文: 张为民, 卜滕滕. 围压效应下煤岩组合体破坏与裂纹发育的细观模拟[J]. 煤矿安全, 2017, 48(11): 45-48,52.
ZHANG Weimin, BU Tengteng. Mesoscopic Simulation of Failure and Crack Development of Coal-rock Combination Under Different Confining Pressure[J]. Safety in Coal Mines, 2017, 48(11): 45-48,52.
Citation: ZHANG Weimin, BU Tengteng. Mesoscopic Simulation of Failure and Crack Development of Coal-rock Combination Under Different Confining Pressure[J]. Safety in Coal Mines, 2017, 48(11): 45-48,52.

围压效应下煤岩组合体破坏与裂纹发育的细观模拟

Mesoscopic Simulation of Failure and Crack Development of Coal-rock Combination Under Different Confining Pressure

  • 摘要: 为研究不同围压下煤岩组合体破坏和裂纹发育的特征及两者的关系,利用PFC2D对组合体进行了不同围压下的模拟研究。结果表明,随着围压的升高,组合体破坏由脆性转为延性;破坏前剪切裂纹的快速发育是脆性转延性破坏的直接原因;不同围压下煤岩组合体以煤体剪切破坏为主,破坏前剪切裂纹在张拉裂隙面附近快速扩展、发育,占据主导地位,导致了组合体的剪切破坏。
    Abstract: In order to study the damage and cracks development of coal-rock combination under different confining pressure and the relationship among them, the PFC2D software was used to simulate compression of coal-rock combination under different confining pressure. The results show that: with the increase of confining pressure, the failure of the combination is changed from brittle failure to ductile failure, and its direct cause is the rapid development of shear cracks. The main failure of the combination is the shear failure of the coal body, and the shear crack develops rapidly near the tensile surface, resulting in shear failure of the combination.
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  • 发布日期:  2017-11-19

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