PEMANFAATAN KOLAM RETENSI DAN SUMUR RESAPAN PADA SISTEM DRAINASE KAWASAN PADAT PENDUDUK

Doddy Yudianto, Andreas F. V. Roy

Abstract


Change of land use in high population density area, especially enlargement of impervious area, willgive direct impact to the increasing of runoff volume which at the end may result increasing of floodrisk. One of the solutions to reduce the flood risk is by applying sustainable drainage system.In the western part of Bandung City where an area of 1.5 hectare was planned to be developed as100% of impervious area for supporting the manufacture storage purposes complete with the wholerelated infrastructures. In the mean time, the surface runoff at that particular area is drained into 0.2 mx 0.2 m of rectangular channels with an outlet point at the surrounding residential drainage system. Bydeveloping the whole area to be impervious, the analysis result shows that the existing channels arenot capable to properly drain the runoff. The channels need to be enlarged to be 0.5 m x 0.4 m at theupstream part and 0.5 m x 0.7 m at the downstream part. To provide sustainable drainage, the systemis designed by combinating the application of retention pond and recharging well. The analysis resultshows that the application of 7.0 m x 20.0 m x 1.5 m of retention pond and recharging well of 1.25 ofdiameter with 10 m of depth could store 10 years period of flood and recharge the groundwater at 10m of depth of aquifer at rate of 0.007 m3/s.

Keywords: Sustainable drainage system, Retention pond, Recharging well.


References



Full Text: PDF

Refbacks

  • There are currently no refbacks.