@article{oai:omu.repo.nii.ac.jp:00009378,
 author = {TEJIMA, Sanji and OGINO, Yoshihiko and YABE, Katsuhiko and MURASHIMA, Kazuo},
 journal = {Bulletin of the University of Osaka Prefecture. Ser. B, Agriculture and biology},
 month = {Mar},
 note = {application/pdf, The previous paper presented the negative pressure drainage method. This method is to such and drain the soil water forcibily through porous materials by using the negative pressure of the water. In the present paper, experiments of a one dimensional vertical soil column and of a small scale model at the experimental field were carried out and the transmission and redistribution of the pressure in the coil were discussed. The following were made clear.(1) In vertical system, the negative pressure drainage given the pressure head Hp, negative, at the height χ has the same effects as the water table is lowered and kept at the height χ+Hp in the gravity drainage.(2) The lower the permeability of the porous material is, compared to that of the soil, the less the efficiency of the pressure transmission and drainage discharged are. From two dimensional steady-state drainage analyses, the maximum discharge is obtained employing the relation between hydraulic conductivity and anti-air permeability of the porous material.(3) For a full scale project of this drainage method on farms, technical problems of the construction and maintenance still remain to be solved., Bulletin of the University of Osaka Prefecture. Ser. B, Agriculture and biology. 1982, 34, p.15-23},
 pages = {15--23},
 title = {Transmission and Redistribution of the Negative Pressure in Soil : Experimental studies on the New Subsurface Drainage Method by the Use of Negative Pressure II},
 volume = {34},
 year = {1982}
}