Permeability of Soil Crust
| Autor: | Gibo, Seiichi, Miyara, Shino, Nakamura, Shinya |
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| Jazyk: | japonština |
| Rok vydání: | 2002 |
| Předmět: | |
| Zdroj: | 琉球大学農学部学術報告 = The Science Bulletin of the Faculty of Agriculture. University of the Ryukyus. 49:159-163 |
| ISSN: | 0370-4246 |
| Popis: | 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^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^cm/s was given. 紀要論文 |
| Databáze: | OpenAIRE |
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