Asia

1. Japan

(1) underground street

The top 5 underground streets of total construction area in Japan in 2005

No.	underground street	location	area (2005)	commercial area (2005)	commercial area/construction area
1	Crystal Nagahori	Central District of Osaka	81765	9500	12%
2	Yaesu Underground Street	Chuo-ku, Tokyo	73253	13787	19%
3	Kawasaki azalea	Kawasaki Ward，Kawasaki，Kanagawa Prefecture	56704	24648	43%
4	Central Park Underground Street	Nagoya, Aichi Prefecture	56370	10250	18%
5	Osaka Media Center (Osaka Station Diamond Underground Street)	North of Osaka	42977	8000	19%

Crystal Nagahori underground street

Nagahori underground street,with a total length of 730 meters, with a total area of 81,765 square meters (including underground parking), is most wide underground street in Japan, known as “Crystal Nagahori.” Four bridges connecting the subway station, Shinsaibashi station, Nagahoribashi station, the traffic is very convenient, one-third of the ground in the region has skylight, there is sunlight into the ground, combined with groundwater to show its features.

plan of Crystal Nagahori
internal layout of Crystal Nagahori
location map of underground parking of Crystal Nagahori
underground parking entrance map of Crystal Nagahori		motorcycle and non-motorized vehicles figure of Crystal Nagahori

（2）common ditch

Common ditch construction is very large scale in Japan, 49 cities build underground utility tunnel with a total length of over 300 kilometers, Japan plans to reach more than 500 kilometers at the beginning of the 21st century.

common ditch construction data sheet

common name	location	length (m)	construction year	reception facilities
Takanawa	Minato-ku & Shinagawa,Tokyo	1999	1965-1966	T，E，N
Aoto, Katsushika	Katsushika， Tokyo	2300	1971-1975	T，E，G，N
Nerima	Nerima，Tokyo	2299	1973-1977	T，E，G，W，N
Kameido	Sumida，Tokyo	2039	1981-1989	T，E，N
Kawasaki	Kawasaki Ward，Kawasaki &Tsurumi-ku, Yokohama	2723	1976-1983	T，E，G，W，N
East Terao	Kanagawa & Tsurumi-ku, Yokohama	4561	1979-1988	T，E，W，N
Yoshino-cho, roller	Roller District & Southern District，Yokohama	2600	1990-	T，E，G，W，S，N
KARASUMA	Under Bunkyo，Kyoto	520	1976-1979	T，E，W
Five	Under Bunkyo，Kyoto	1514	1979-1985	T，E
Second Amagasaki	Amagasaki,Hyogo	2476	1980-1988	T，E，G
Kobe	Chuo-ku & Hyogo,Kobe	3280	1987-	T，E，G，S
Fukushima	Fukushima & North, Osaka	2369	1982-	T，E，G，W
Lake-ku	Fukushima District & West Yodogawa,Osaka	3708	1988-	T，E，G，W
PS：T-Telegraph and Telephone  G-Gas   W-Waterworks  S-Sewer   E-Electric power   N-Tokyo Communication Network

Hibiya common ditch-（www.notbad.cn）

Hibiya common ditch tectonics from Humen paragraph 1 until Chiyoda under Yurakucho State Route 1 until 1 segment, Humen work well as a departure point, via Sakurada work well, Sunday Hibiya work well, with a length of 1423m shield tunnel (tunnel inner diameter φ6,700mm), is constructed by slurry shield machine, the tunnel overburden is 35m at the originating part; 23m at the destination part .

Azabu Hibiya common ditch plan
Geological profile view
Humen work well plan on the ground floor	Humen work well plan under pavement floor	Slurry shield machine (φ7470mm)

（3）underground road

Yokohama ring North line-（radiate.jp）

Yokohama ring North line connects the third Keihin Road Kohoku IC (Port North Interchange) and Metropolitan Expressway Yokohane line Namamugi JCT (Namamugi crossing) highway, the total length is 8.2 kilometers.

Yokohama ring North line location map	Yokohama ring North line interior photo (1)	Yokohama ring North line interior photo (2)
Yokohama ring North line interior photo (3)	Yokohama ring North line interior photo (4)	Yokohama ring North line interior photo (5)

（4） Capital peripheral drainage system (Capital Juan bulwarks drainage channel)-（ktr.mlit.go.jp）

Beginning construction in 1992,the metropolitan periphery drainage system established by series of concrete pits, each of which has a 65-meter-high concrete pit stand (about 22 floors high), 32 meters wide, at 50 meters deep, picked up by the 6.3 km-long tunnel, in addition, there is a huge surge tank: 25.4 meters tall (about eight floors), 177 meters long, 78 meters wide, there are 59 concrete pillars inside, with a total storage capacity of 670,000 cubic meters, maximum displacement of 200 cubic meters per second by 14,000 horsepower turbine, until the completion of 2006, known as the world’s most advanced sewer drainage system, the drainage standard is “a case of five to ten years,” constituted by series of concrete pit stand, the depth of underground river is 60 meters.

2.Singapore

（1）Jurong rock cavern

It is the first underground petroleum and petrochemical products storage facilities in Southeast Asia.

Jurong Rock Cave – underground oil storage (1) Photographer: Bryan van der Beek / Bloomberg	Jurong Rock Cave – underground oil storage tanks (2) Photographer: Bryan van der Beek / Bloomberg
Jurong Rock Cave – underground oil storage tanks (3) -Photo JTC	Jurong Rock Cave – underground oil storage tanks (4) -Photo JTC

（2）deep cable tunnel-（singaporepower.com）

Depth of 60m, totaling 35 km, constructed by drilling and blasting, and a combination of the TBM. North-South tunnel is from Gambas to May Road, totaling 18.5 km; East-West tunnel is from Ayer Rajah to Paya Labar, totaling 16.5 kilometers. We expected to be completed by the end of 2018.

Alignments plan	Interior photos (1) – (sovereignsingapore.com)
Interior photos (2) – (sovereignsingapore.com)	Interior photos (3) – (sovereignsingapore.com)
Interior photos (4) – (sovereignsingapore.com)	Interior photos (5) – (sovereignsingapore.com)