膜孔灌溉条件下入渗规律的研究

对重粉质粘土进行了4种孔径的膜孔灌水及垂直一维入渗试验，观测了膜孔点源入渗过程中的累积入渗水量、水平湿润范围及速度、点源下渗速度等。结果表明，膜孔点源累积入渗水量符合考斯加可夫模型，并且得出了膜孔直径与入渗系数、入渗指数的关系。膜孔直径与湿润深度及膜孔直径与湿润半径间的关系。

Experimental research on infiltration through membrane-hole irrigation single hole

The water of the membrane-hole irrigation is infiltrated intosoil through the membrane-hole. The form of infiltration is drop infiltration. The experiment was performed for four membrane holes of different diameters and for a vertical one using the heavy silt clay in the laboratory. Observation was made on the infiltrated water quantity, level bound clouding rate and drop-infiltration degree of the membrane-hole drop-infiltration. The result indicated that drop-infiltration degree of the membrane-hole accords with the Kostiakov model. And the relationship between the diameter of the membrane-hole and the infiltration coefficient and the exponential of infiltration and the relationship between the diameter of membrane-hole and the depth of the wetness and the diameter of the wetness were worked out.