CONSTRUCTION METHOD OF WATER BOTTOM TUNNEL AND EXTRUDING YARD STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a construction method of a water bottom tunnel and an extruding yard structure capable of shortening a construction period and capable of reducing a construction cost by shortening an extruding distance of a box group. SOLUTION: A construction method of a water bottom tunnel is performed by extruding a connected box body 400 group in order to the bottom of water. In this case, a water stop wall 200 is erected in an extrusion departing side water area of a box body 400, an extruding yard 300 capable of adjusting a water level is arranged on the shore side of the water stop wall 200, and the connected box body 400 group is extruded in order to the bottom of water by penetrating through the water stop wall 200.