2024-03-28T15:59:23Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02002660
2022-02-14T21:38:51Z
1642837622505:1642837905044:1642837922297
1642838403551:1642838407312
土壌クラストの透水性
Permeability of Soil Crust
宜保, 清一
宮良, 志乃
中村, 真也
Gibo, Seiichi
Miyara, Shino
Nakamura, Shinya
土壌クラスト
動水勾配
透水係数
soil crust
hydraulic gradient
hydraulic conductivity
The clarify the permeability of a soil crust, the constant head permeability tests were carried out on the kaolinite and the red soil, and the hydraulic gradient i where Darcy's law was valid and the saturated hydraulic conductivity of crusts mainly examined. For the kaolinite crust, the flux q gradually increased with the hydraulic gradient i, and reached its peak at different hydraulic gradients ranging from 80 to 100 and ended as a down-ward curve. For consolidated crusts at 70 hydraulic gradient of valid region of Darcy's a law, the q-i relationobtained by being tested at the hydraulic gradients below 70 was expressed as a straight line which had the saturated hydraulic conductivity of k=6.80 × 10^<-5>cm/s. For the red soil crust, all experimental data points of q and i were approximately on a straight line at the hydraulic gradients below 30, and thus k=2.50 × 10^<-4>cm/s was given.
紀要論文
http://purl.org/coar/resource_type/c_6501
琉球大学農学部
VoR
http://hdl.handle.net/20.500.12000/3627
0370-4246
AN00250548
琉球大学農学部学術報告
The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus
49
163
159
jpn
open access