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A non-linear flow model for the flow behavior of water inrush induced by the karst collapse column

机译：岩溶塌陷柱诱导水涌流动的非线性流动模型

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摘要

Water inrush induced by the karst collapse column (KCC) is a great threat to coal mine safety. In this study, a non-linear flow model that couples three flow types is built based on flow transition from laminar flow in the aquifer to turbulent flow in the mine roadways during the process of water inrush induced by KCC. The proposed model couples Darcy flow, Forchheimer flow, and turbulent flow, and is then used to simulate the flow behavior of water inrush induced by KCC. In particular, the "3.1" water inrush incident from the coal seam floor in the Luotuoshan coal mine, China, is numerically investigated. The numerical results show that with the increase of the inrush flow rate, Forchheimer flow in the water inrush channel is first controlled by viscous resistance, then affected by both viscous resistance and inertial resistance, and finally controlled by inertial resistance. Therefore, water inrush induced by KCC is a dynamic process with a transition from laminar to turbulent. The Forchheimer equation proved to be applicable in describing the high-velocity non-linear flow, and can also reflect the intermediate state of the flow translation from laminar flow in the aquifer to turbulent flow in the roadway during the water inrush process.
机译：喀斯特崩溃栏（KCC）引起的潮流是对煤矿安全的巨大威胁。在该研究中，基于从含水层中的流量过渡到含水层中的流量过渡到通过KCC诱导的水涌出过程中的含水层中的流动转变来构建三种流动类型的非线性流动模型。所提出的模型伴随着达西流动，学前流动和湍流，然后用于模拟KCC诱导的水涌的流动性能。特别是，在中国洛沱山煤矿的煤层楼层的“3.1”水中涌入数值调查。数值结果表明，随着浪涌流动速率的增加，水浪涌通道中的学生流动首先通过粘性电阻控制，然后受粘性电阻和惯性电阻影响，最后通过惯性电阻控制。因此，KCC引起的水浪涌是一种动态过程，其从层流过渡到湍流。学前方程证明可适用于描述高速非线性流动，并且还可以反映水浪涌过程中含水层中的流动转换的流动转换中的中间状态。

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  • 来源
    《RSC Advances》 |2018年第3期|共10页
  • 作者

    Hou Xiangang; Shi Wenhao; Yang Tianhong;

  • 作者单位

    Northeastern Univ Sch Resources &

    Civil Engn Ctr Rock Instabil &

    Seism Res Shenyang 110819 Liaoning Peoples R China;

    Northeastern Univ Sch Resources &

    Civil Engn Ctr Rock Instabil &

    Seism Res Shenyang 110819 Liaoning Peoples R China;

    Northeastern Univ Sch Resources &

    Civil Engn Ctr Rock Instabil &

    Seism Res Shenyang 110819 Liaoning Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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