The effect of pipe collectors in reducing the drainage coefficient rate
A high groundwater table and soil salinity, especially in arid regions, often cause serious problems for agriculture. In irrigated areas the subsurface drainage can be an effective technique to lower the depth of the groundwater table and reduce soil salinity. In drainage systems, lateral pipes are...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IWA Publishing
2015
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| Online Access: | http://psasir.upm.edu.my/id/eprint/46563/1/The%20effect%20of%20pipe%20collectors%20in%20reducing%20the%20drainage%20coefficient%20rate.pdf |
| _version_ | 1825929709072941056 |
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| author | Ghorbani, Karim Wayayok, Aimrun Abbaszadeh, Masumeh Abdullah, Ahmad Fikri |
| author_facet | Ghorbani, Karim Wayayok, Aimrun Abbaszadeh, Masumeh Abdullah, Ahmad Fikri |
| author_sort | Ghorbani, Karim |
| collection | UPM |
| description | A high groundwater table and soil salinity, especially in arid regions, often cause serious problems for agriculture. In irrigated areas the subsurface drainage can be an effective technique to lower the depth of the groundwater table and reduce soil salinity. In drainage systems, lateral pipes are designed to collect the free water from soil and convey it into collectors. In other words, collectors are commonly designed to convey drainage water from laterals downstream, while the laterals play an additional role in removing excess water from irrigated land. The present research was conducted to investigate the effects of collectors in discharging excess water from soil using a laboratory-tank model. The results indicated that on average 24% of drainage water was directly discharged through the collector pipe when the hydraulic gradient of the flow was sloped toward the collector pipe. Hence, it was concluded that, with proper monitoring, collectors were capable of reducing the drainage coefficient from an average of 32.5 to 24.5 mm/day, while drain spacing of the laterals can increase the results by about 15% in comparison with the present situation. |
| first_indexed | 2024-03-06T09:00:41Z |
| format | Article |
| id | upm.eprints-46563 |
| institution | Universiti Putra Malaysia |
| language | English |
| last_indexed | 2024-03-06T09:00:41Z |
| publishDate | 2015 |
| publisher | IWA Publishing |
| record_format | dspace |
| spelling | upm.eprints-465632018-03-29T02:31:45Z http://psasir.upm.edu.my/id/eprint/46563/ The effect of pipe collectors in reducing the drainage coefficient rate Ghorbani, Karim Wayayok, Aimrun Abbaszadeh, Masumeh Abdullah, Ahmad Fikri A high groundwater table and soil salinity, especially in arid regions, often cause serious problems for agriculture. In irrigated areas the subsurface drainage can be an effective technique to lower the depth of the groundwater table and reduce soil salinity. In drainage systems, lateral pipes are designed to collect the free water from soil and convey it into collectors. In other words, collectors are commonly designed to convey drainage water from laterals downstream, while the laterals play an additional role in removing excess water from irrigated land. The present research was conducted to investigate the effects of collectors in discharging excess water from soil using a laboratory-tank model. The results indicated that on average 24% of drainage water was directly discharged through the collector pipe when the hydraulic gradient of the flow was sloped toward the collector pipe. Hence, it was concluded that, with proper monitoring, collectors were capable of reducing the drainage coefficient from an average of 32.5 to 24.5 mm/day, while drain spacing of the laterals can increase the results by about 15% in comparison with the present situation. IWA Publishing 2015-07 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/46563/1/The%20effect%20of%20pipe%20collectors%20in%20reducing%20the%20drainage%20coefficient%20rate.pdf Ghorbani, Karim and Wayayok, Aimrun and Abbaszadeh, Masumeh and Abdullah, Ahmad Fikri (2015) The effect of pipe collectors in reducing the drainage coefficient rate. Water Science and Technology: Water Supply, 15 (4). pp. 675-682. ISSN 1606-9749; ESSN: 1607-0798 http://ws.iwaponline.com/ 10.2166/ws.2015.014 |
| spellingShingle | Ghorbani, Karim Wayayok, Aimrun Abbaszadeh, Masumeh Abdullah, Ahmad Fikri The effect of pipe collectors in reducing the drainage coefficient rate |
| title | The effect of pipe collectors in reducing the drainage coefficient rate |
| title_full | The effect of pipe collectors in reducing the drainage coefficient rate |
| title_fullStr | The effect of pipe collectors in reducing the drainage coefficient rate |
| title_full_unstemmed | The effect of pipe collectors in reducing the drainage coefficient rate |
| title_short | The effect of pipe collectors in reducing the drainage coefficient rate |
| title_sort | effect of pipe collectors in reducing the drainage coefficient rate |
| url | http://psasir.upm.edu.my/id/eprint/46563/1/The%20effect%20of%20pipe%20collectors%20in%20reducing%20the%20drainage%20coefficient%20rate.pdf |
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