SHAFT CONSTRUCTION METHOD

摘要

A method of constructing shafts and continuous walls quickly and efficiently. The construction process consists of one step in which air and a ground hardener are injected by a jetting pipe element to form a column-shaped region of soil mixed with hardener; and another step in which a hardening inhibitor is injected into the soil-hardener mixture region by the jetting element, the shaft then being formed by excavating the portion of the ground that has not been hardened because of the presence of the inhibitor.