CONSTRUCTION METHOD FOR UNDERGROUND WALL

PROBLEM TO BE SOLVED: To provide a construction method for an underground wall 1 capable of integrating the underground wall 1 and a structure 2 and preventing the cause of a water leak on special elements where a piping vertical shaft is located. SOLUTION: The underground wall 1 is split into a plurality of elements, and a receiving groove 11 is formed on the face of the underground wall 1 on the structure 2 side. A projection 21 is protruded from the structure 2 side toward the underground wall 1 side. Shearing resistance is obtained by the combination of the receiving groove 11 and the projection 21 to integrate the underground wall 1 and the structure 2. The underground wall 1 is formed into a flat shape without forming the receiving groove 11 on the elements at a special position where the piping shaft is installed. The lacking shearing resistance is beared by the combination of the receiving groove 11 distributed on other elements of the underground wall 1 and the projection 21 of the structure 2.