Options
Free discharge of subsurface drainage effluent : an alternate design of the surface drain system in Pakistan
Citation Link: https://doi.org/10.15480/882.3428
Publikationstyp
Journal Article
Publikationsdatum
2021-04-01
Sprache
English
TORE-URI
Enthalten in
Volume
13
Issue
7
Article Number
4080
Citation
Sustainability 13 (7): 4080 (2021-04-01)
Publisher DOI
Scopus ID
Publisher
Multidisciplinary Digital Publishing Institute
In Pakistan, many subsurface (SS) drainage projects were launched by the Salinity Control and Reclamation Project (SCARP) to deal with twin problems (waterlogging and salinity). In some cases, sump pumps were installed for the disposal of SS effluent into surface drainage channels. Presently, sump pumps have become dysfunctional due to social and financial constraints. This study evaluates the alternate design of the Paharang drainage system that could permit the discharge of the SS drainage system in the response of gravity. The proposed design was completed after many successive trials in terms of lowering the bed level and decreasing the channel bed slope. Interconnected MS-Excel worksheets were developed to design the L-section and X-section. Design continuity of the drainage system was achieved by ensuring the bed and water levels of the receiving drain were lower than the outfalling drain. The drain cross-section was set within the present row with a few changes on the service roadside. The channel side slope was taken as 1:1.5 and the spoil bank inner and outer slopes were kept as 1:2 for the entire design. The earthwork was calculated in terms of excavation for lowering the bed level and increasing the drain section to place the excavated materials in a specific manner. The study showed that modification in the design of the Paharang drainage system is technically admissible and allows for the continuous discharge of SS drainage effluent from the area.
Schlagworte
surface drain system
design
drainage effluent
Pakistan
DDC Class
600: Technik
620: Ingenieurwissenschaften
710: Landschaftsgestaltung, Raumplanung
Publication version
publishedVersion
Loading...
Name
sustainability-13-04080-v3.pdf
Size
4.67 MB
Format
Adobe PDF