On the basis of the predecessors ' studies and two-phase flow dynamic conservation equations, horizontal flow model is set up to analyse the laminar flow, annular flow and turbulent flow, and then figure out the parameters needed. 根据水平井流动状态,从两相流动的动力守恒方程出发,建立水平井流动模型,对层状流、环状流及紊流3种情况进行分析,求取参数。
Considering both vertical seepage and horizontal seepage, the moving grain with different diameter was analyzed under the conditions of laminar flow and turbulent flow, and different critical hydraulic gradients were educed according to different pipe seepage. 分别针对自下而上和水平向的渗流,分析不同粒径的可动颗粒在层流和紊流两种状态下的受力,从而得到不同状态下的管涌发生时的临界水力梯度。