Method and apparatus for the bottom-up construction of vertical risers from underground passes through the soil, using a pipe jacking equipment

System for the bottom-up construction of vertical riser pipes from underground tunnels to an upper waterbody through the soil, wherein the system comprises:

• one or more vertical riser pipes comprising at least three riser pipe segments;
• a pipe jacking equipment which is configured to install said one or more vertical riser pipes by pushing said at least three riser pipe segments into soil formations in the upward direction, from an underground tunnel to an upper level, a load distribution system, configured to transfer thrust force to a tunnel structure during installation of said one or more vertical riser pipes, and a displacement head configured to perform excavation and removal of soil, wherein said displacement head is equipped with a hydro-demolition system and a soil discharge line;
• wherein said displacement head is fastened, by means of removable connection elements, to a keystone launching segment equipped with a sealing system configured to connect, with a watertight connection, each riser and the tunnel to allow underwater applications, and wherein said sealing system comprises lip gaskets and additional emergency seals, and is configured to ensure the water tightness between each of the vertical riser pipes or the displacement head, and the keystone launching segment.