沉埋隧道是水下隧道的一种,它是由沉埋段(水下部分)、地上段及换气部分(竖井)组成。沉埋隧道施工方法是水下隧道施工方法之一。沉埋隧道的施工顺序大致如下:①沉埋预制场内在不防碍隧道体的制作、拖航、沉放等作业的前提下,沿隧道纵轴线方向将隧道体分割成适当的长度。各段称作沉埋隧道的管节。 Submerged tunnel is a kind of underwater tunnel, which is composed of submerged section (underwater part), above ground and ventilation part (shaft). Submerged tunnel construction method is one of the underwater tunnel construction methods. The sequence of construction of the buried tunnel is as follows: ① The tunnel body is divided into appropriate lengths along the longitudinal axis of the tunnel without prejudice to the operation of making, towing, sinking and tunneling of the tunnel body in the prefabricated submerged ground. Each section is called the pipe section of a buried tunnel.