沈ちん埋まい工こう法ほう

noun

immersed tube method; sunk box culvert construction

A civil engineering method for building underwater tunnels by sinking prefabricated box culverts into a trench and joining them together.

• 東とう京きょう湾わんアクアラインのトンネル部ぶ分ぶんは沈ちん埋まい工こう法ほうで建けん設せつされた。

  The tunnel section of the Tokyo Bay Aqua-Line was built using the immersed tube method.