Deep seated

摘要

A pair of remote-controlled underwater jacking frames, an exceptionally deep level jack-up barge with pinpoint GPS aggregate placing , and a mini-submarine marine access vehicle, are among the innovative tools being used on the complex and difficult Busan-Geoje fixed link project currently under construction in South Korea.rnThe developments are a step forward for modern immersed tube tunnel techniques such as those used for the spectacular Oresund crossing between Denmark and Sweden in recent years. They build on that international experience to allow completion of an even more difficult project. Casting of the tunnel elements is also more complex, as undersea conditions are more difficult.