Tong Fuk sea earth cables, Lantau
Laying and burying sea earth cables for the Tong Fuk international telecommunications station.
- Year
- 2009
- Location
- Tong Fuk, Lantau Island
- Status
- Founder's project experience
- Category
- Underwater & marine
Founder's project experience. Our founder took part in the construction design and site work on this project. It was carried out as part of another company's team, not under the Yan & Partners name.
Submarine cable stations need sea earths: cables running from the station out onto the seabed. At Tong Fuk the team laid two earth cables and a cable junction from the beach manhole, through ducts and a landing point, out to two sea-earth positions on the seabed.
Every point, from the beach manhole to the end of each earth, was set out in HK Grid and WGS-84 coordinates. Burial depth was recorded along the route in the completion report.
From the drawings
The cables belong to Segment S1 of the Asia-America Gateway (AAG) network. The route from the beach manhole through AC1 to AC4 to the two concrete sea-earth boxes is about 412 m. About 600 m of articulated-pipe protection went on (1,200 sets), and about 480 m was buried 0.5–1.0 m deep by water jet and airlift. A daily log from July 2009 records 10 to 37 m buried per day at −9 to −10.9 PD in sandy mud.
Drawings
