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

长堀地下街地下停车出入口分布图underground parking entrance map of Crystal Nagahori 长堀地下街摩托车和非机动车停车图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-(

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

虎门工作井地面上平面布置图Humen work well plan on the ground floor 虎门工作井路面下平面布置图Humen work well plan under pavement floor 泥水式盾构机(φ7470mm)Slurry shield machine (φ7470mm)

(3)underground road

Yokohama ring North line-(

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.

横浜環状北線位置图Yokohama ring North line location map 横浜環状北線内景照片(1)Yokohama ring North line interior photo (1) 横浜環状北線内景照片(2)Yokohama ring North line interior photo (2)
横浜環状北線内景照片(3)Yokohama ring North line interior photo (3) 横浜環状北線内景照片(4)Yokohama ring North line interior photo (4) 横浜環状北線内景照片(5)Yokohama ring North line interior photo (5)

(4) Capital peripheral drainage system (Capital Juan bulwarks drainage channel)-(

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.


(1)Jurong rock cavern

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

裕廊岩石洞穴-地下储油库(1)Jurong Rock Cave – underground oil storage (1) Photographer: Bryan van der Beek / Bloomberg 裕廊岩石洞穴-地下储油库(2)Jurong Rock Cave – underground oil storage tanks (2) Photographer: Bryan van der Beek / Bloomberg
裕廊岩石洞穴-地下储油库(3)Jurong Rock Cave – underground oil storage tanks (3) -Photo JTC 裕廊岩石洞穴-地下储油库(4)Jurong Rock Cave – underground oil storage tanks (4) -Photo JTC

(2)deep cable tunnel-(

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.

线路走向平面图Alignments plan 内景照片(1)-( photos (1) – (
内景照片(2)-( photos (2) – ( 内景照片(3)-( photos (3) – (
内景照片(4)-( photos (4) – ( 内景照片(5)-( photos (5) – (