PURPOSE: To shorten the construction time and improvement the operating accuracy at the time of making a digging hole for a succeeding wall body and cutting the end surface of a preceding wall body.
CONSTITUTION: In a continuous wall constructed in the underground, digging holes 1 for preceding wall bodies are made at fixed spaces, and a cutting plate A easy to dig is interposed at least in the upper end portion of the cutting end surface in the direction of jointing of successive pores in the interior of the digging hole. Concrete is placed in the rear to form a preceding wall body, and while the cutting plate A is cut, the digging hole 1 is made in the space from the preceding wall body. Concrete 3 is placed in the digging hole to form a succeeding wall body connected to the preceding wall body. Thus, a continuous wall is constructed.
ONOZAWA SHO
ARAI MASAO
