【摘要】：巖溶陷落柱突水是威脅煤礦安全生產(chǎn)的重大災(zāi)害之一�；谙萋渲凰^程中流體流態(tài)轉(zhuǎn)捩(含水層層流到巷道紊流)的滲流本質(zhì),建立了三流場(Darcy層流、Forchheimer流和N-S紊流)耦合非線性滲流模型,并應(yīng)用于駱駝山煤礦"3·1"底板陷落柱突水?dāng)?shù)值模擬分析。結(jié)果表明:隨著突水流體流速不斷增大,陷落柱Forchheimer流由黏滯阻力為主,到黏滯阻力和慣性阻力共同作用,最后到慣性阻力為主發(fā)生了質(zhì)的變化,陷落柱突水是流體滲流從漸變到突變的動態(tài)過程。進(jìn)一步表明采用Forchheimer方程描述陷落柱內(nèi)高速非線性層流,能夠較好地反映水流從含水層達(dá)西層流到巷道紊流的中間狀態(tài),可以定量揭示陷落柱突水三種流態(tài)轉(zhuǎn)捩的滲流本質(zhì)。
[Abstract]:Water inrush from Karst collapse column is one of the major disasters that threaten the safety of coal mine production. Based on the seepage nature of fluid flow pattern transition (water-bearing layer flow to roadway turbulence) in the process of falling column water inrush, the coupling nonlinear seepage model of three-flow field (Darcy laminar flow, Forchheimer flow and N 鈮，

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