Ref: Barangkali dikehendaki seperti atau mirip sistem yang ada di Tokyo, jadi seperti biasa perlu kirim study banding DPR, biar mereka melancong. Untuk melihat system di Tokyo, click : http://www.youtube.com/watch?v=ieiBF5EdTy0
http://www.thejakartaglobe.com/home/jakartas-planned-deep-tunnel-to-help-alleviate-flooding-traffic/564412 Jakarta's Planned Deep Tunnel to Help Alleviate Flooding, Traffic Ronna Nirmala | January 03, 2013 he Jakarta administration will kill two birds with one stone by installing a multipurpose tunnel to help alleviate flooding as well as traffic woes, an official said on Thursday. The idea for the tunnel, also known as a deep tunnel, was floated by Governor Joko Widodo as a necessary piece of infrastructure needed to help reduce the city’s flood burden. Agus Subardono, who heads the city’s land zoning office, said that besides channeling flood water, the tunnel would also accommodate roads for traffic and utility piping. “The initial idea was to place it on the Ciliwung river [going] up to the West Flood Canal, but because it would involve too many bends, it was finally decided to be built under the road,” Agus said on the sidelines of a presentation on the project at City Hall. He added that the deep tunnel, with a diameter of 16 meters, will be built at a depth of between 40 to 60 meters and will consist of three channels. The upper two channels would be for traffic, while the last one would be used to transmit water and the utility piping. However, Agus noted that the road inside the tunnel would not go through the entire length, but only part of it. “Only about 10 kilometers of the multipurpose deep tunnel will be for roads, and the rest would be for water catchment,” he said, adding that the road portion would be from MT Haryono in East Jakarta to Slipi in West Jakarta. He revealed that the road would contain tolls, with inlets in the Gatot Subroto area to accommodate traffic coming from the Warung Buncit and Mampang areas, as well as Tomang and Slipi Jaya. Joko, meanwhile, said that while the tunnel would primarily channel flood water to the sea, it would also be used to help ease the city’s traffic congestion. “Besides lessening congestion, it will also lessen floods, and this is why it is called a multipurpose tunnel,” he said, adding that telephone, gas, electricity piping would be able to also pass through the tunnel. [Non-text portions of this message have been removed]
