Abstract
In order to improve the saline and water logged soils caused due to groundwater table rise, installation of subsurface drainage system is considered as one of the best remedies. However, the design of the drainage system has to be accurate so that the field performance results conform to the designed results. In this investigation, the field performance of subsurface tube drainage system installed at the study area was evaluated. The performance was evaluated on the basis of comparison of the designed value of water table drop as 30 cm after 2 days of drainage and predicted and field measured hydraulic heads for a consecutive drainage period of 14 days. The investigation revealed that the actual drop of water table after 2 days of drainage was 25 cm, about 17 % less than the designed value of 30 cm after 2 days of drainage. The comparison of hydraulic heads predicted by Van Schilfgaarde equation of unsteady drainage with the field-measured hydraulic heads showed that the deviation of predicted hydraulic heads varied within a range of ±8 % indicating high acceptability of Van Schlifgaarde equation for designing subsurface drainage system in saline and water logged soils resembling to that of the study area.
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Acknowledgments
The author is thankful to Haryana Land Development Corporation, Chandigarh, India for providing the necessary data of subsurface tube drainage system installed at the study area and extending facilities to carry out this study.
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Pali, A.K. Performance of Subsurface Tube Drainage System in Saline Soils: A Case Study. J. Inst. Eng. India Ser. A 96, 169–175 (2015). https://doi.org/10.1007/s40030-015-0109-z
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DOI: https://doi.org/10.1007/s40030-015-0109-z