BYPASS CHANNEL AS A CONTROL FOR QUANTITY AND QUALITY OF WATER THAT ENTER THE WEST COASTAL RESERVOIR IN THE NCICD/IFSP 2019 MASTERPLAN
In various master plans for Jakarta Bay flood control since NCICD in 2014 to IFSP in 2019, it is shown that the Coastal Reservoir (CR) become an important component to be built. The problem is that the CR in the master plan is a closed system, so that regardless of the volume of river water going...
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Format: | Theses |
Language: | Indonesia |
Online Access: | https://digilib.itb.ac.id/gdl/view/54429 |
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Institution: | Institut Teknologi Bandung |
Language: | Indonesia |
Summary: | In various master plans for Jakarta Bay flood control since NCICD in 2014 to IFSP
in 2019, it is shown that the Coastal Reservoir (CR) become an important
component to be built. The problem is that the CR in the master plan is a closed
system, so that regardless of the volume of river water going into the CR, it cannot
be diverted to another place by gravity. As a result, a large capacity of pump is
required to remove excess water. If the pump is damaged, even though the gate is
available, the gate connected with the roller gate and shiplock, making it
complicated to operate and the CR is vulnerable to seawater intrusion. The
condition that cannot be prevented is the quality of the incoming river water that
being polluted during an environmental disaster, then the polluted river water
flowing to the system. Learnt from the Lake Shiwa in South Korea disaster, for the
pre-design stage B of IFSP 2019, a bypass channel (BC) is recommended. By
regulating the quantity and quality of water in BC, CR water quality is more
guaranteed and the pump operating costs will not be needed because the
unnecessary water can be flowed directly to the sea. To prevent flooding that will
occur on the reclamation island at (+) 2.00 m, it will need 3 doors in BC. The
maximum water elevation of BC when the peak discharge of Cengkareng Drain and
BKB reaches (+) 0.96 m. If the CR is simulated to experience a dam break, the
maximum water elevation BC (+) is 0.80 m. |
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