Hydraulics Observations of Sub-surface Drainage

암반배수의 수리에 관한 고찰

This paper is primarily aimed at helping those engineers understand the hydraulics of sub-surface drainage, who are concerned to drainage engineering in agricultural lands. This consists or five sections. the first section-introduction, the second-hydraulics of tile drai nage, the third-determination of tile spacing, the fourth-dekrmination of tile capacity and the fifth-conclusion with a list of references which this paper has been referred to. In the third section several methods of determining tile spacing are presented which are exactly based upon the same theory and an emphasis is especially put on Massland's integrated analysis. All computations are facilitated by plotted curves provided with here in and also exampHfied in the third and fourth sections purposedly leading to the better understanding of readers in application of the methods presented.