1986 Volume 1 Pages 95-100,a11
The sand mat is one of the most effective drain filters and is often used for soil improvement works practically. Recently, however, it becomes in hard to get the good sand materials and thus the permeability of sand mat used at many construction sites is so small that it is impossible to apply practically for the drain filters. Therefore, the development of the artificial drain materials like as geotextiles is requested.
In this paper, the drainage effect of the new type “Band-shape Drain Material”, which is made of the PVC and nonwoven fabric, is examined by laboratory test and numerical analysis and its design method for practical application is introduced.
