| contributor author | Walter J. Bentley | |
| contributor author | R. W. Skaggs | |
| date accessioned | 2017-05-08T20:47:48Z | |
| date available | 2017-05-08T20:47:48Z | |
| date copyright | May 1993 | |
| date issued | 1993 | |
| identifier other | %28asce%290733-9437%281993%29119%3A3%28584%29.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/27458 | |
| description abstract | This study was conducted to examine the entrance resistance and head losses in the immediate vicinity of subsurface drains and to measure the change with time just after drain installation. Laboratory experiments were conducted on drain tubes and sandy loam soil excavated from the drain depth. Tubes were tested both with and without a thin fabric envelope. Theoretical and approximate methods of quantifying entrance resistance and head losses were compared to measured results. Changes in hydraulic conductivity, head loss, and entrance resistance in the immediate vicinity of the drains were examined using laboratory soil tanks. The hydraulic conductivity decreased over time. The effective radius, | |
| publisher | American Society of Civil Engineers | |
| title | Changes in Entrance Resistance of Subsurface Drains | |
| type | Journal Paper | |
| journal volume | 119 | |
| journal issue | 3 | |
| journal title | Journal of Irrigation and Drainage Engineering | |
| identifier doi | 10.1061/(ASCE)0733-9437(1993)119:3(584) | |
| tree | Journal of Irrigation and Drainage Engineering:;1993:;Volume ( 119 ):;issue: 003 | |
| contenttype | Fulltext | |
