CONSTRUCTION METHOD OF TRENCH UNDERWATER

摘要

Disclosed is a method of constructing a trench underwater. The method of constructing a trench underwater includes: (a) a step of arranging a guide structure forming a straight band area by having a plurality of holes formed on one side of a barge ship continuously in a line to be overlap with each other at a position corresponding a trench construction intended spot; and (b) a step of forming a straight band-shaped trench corresponding to the straight band area by performing ground excavation with an excavation unit of excavation equipment inserted into the holes.