POLDER SYSTEM PLANNING AND ECODRAINAGE APPLICATION AS A FLOOD MANAGEMENT EFFORTS IN PADEMANGAN DISTRICT, NORTH JAKARTA
Jakarta is a developing metropolitan city as in business, industry and infrastructur fields. If natural disasters occur like floods, the financial loss effect is huge and affect the community activity in Jakarta. Due to Jakarta’s level-lowland topography, causes rainfall in that area suspended an...
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| Format: | Final Project |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/64470 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | Jakarta is a developing metropolitan city as in business, industry and
infrastructur fields. If natural disasters occur like floods, the financial loss effect is
huge and affect the community activity in Jakarta. Due to Jakarta’s level-lowland
topography, causes rainfall in that area suspended and didn’t flow to downstream,
making a farthermore non-gravitation drainage system is required. One of suitable
solution in such situation is polder system. In this essay, the planning design is to
make polder system and ecodrainage system as a solution to prevent flood at
Pademangan district, North Jakarta.
Due to analysis stormwater by SCS-CN method obatanined a 25 years return
priod flood discharge (Q25) is 154.7 m3/s. With that flood discharge, the hydraulic
analysis is then performed using Hec-RAS. Based on Hec-RAS result, it is acquired
in the Polder Pademangan area flooding of 2.525 km from downstream Sentiong
River and 1.1 km in Ancol River. According the analysis outcome, non-structural
intervention like ecodrainage and structural intervention like polder system and
normalization channel will be planned. The ecodrianage design plans are porous
pavement and green roofttop. Ecodrainage system can reduce peak discgharge by
42.4 m3/s. River normalization as Structural intervention can reduce water level
from -0.83 mPP to 1.5 mPP in Sentiong River and -1.38 mPP untl -2.69 mPP in
Kali Ancol. The Polder System planning is to install 10 pumps with capacity of 7
m3/s and 5 pumps with capacity 10 m3/s, therefore the total capacity is 120 m3/s.
With the solutions above, the structural and and non-structural plans can reduce
water level up to 1.88 m. The planned budget for the development of the
ecodrainase, river normalization, and polder system is Rp. 3,238,182,050,000.00. |
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