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本文着重研究均勻块石堆石体紊流渗透的有关問題。試驗研究表明,紊流渗透时,过堆石体渗流阻力系数主要与孔隙率有关,堆石粒径影响較小。作者提出以临界坡降判別滲流流态,並导出层流临界坡降和紊流临界坡降的計算公式,为判別流态提供了較簡便的計算方法。根据量綱分析和紊流流态时的阻力关系导出該流态时的渗透系数計算公式。最后限据紊流渗透基本規律导出堆石体逸出高度和渗流量的計算公式。
This paper focuses on the research on the turbulent infiltration of uniform block rockfill. Experimental results show that when the turbulence infiltrates, the seepage resistance coefficient of the overlying rock mass is mainly related to the porosity, and the influence of the rockfill grain size is small. The author proposes to determine the seepage flow regime by using the critical gradient approach and to derive the formulas for calculating the critical slope gradient of the laminar flow and the critical gradient of the turbulence so as to provide a simple and convenient method for determining the flow regime. According to the relationship between the dimension and the resistance of the turbulent flow, the formula of permeability coefficient is derived. Finally, the formula for calculating the escape height and seepage of rockfill body is derived from the basic laws of turbulent infiltration.