PROBLEM TO BE SOLVED: To provide a water stopping material injection method and a levee body, efficiently and economically performing water stopping injection by a simple piping method in cement milk injection requiring water-tightness.
SOLUTION: With a grout pipe 33 set in a grout hole 13 formed in a hydraulic iron pipe 3, filling concrete 17 is placed between the hydraulic iron pipe 3 and the levee body concrete 17, and the inside of the grout pipe 33 is drilled. Subsequently, a forked pipe 39 is connected to the grout pipe 33, and an evacuate pipe 59 is set in the grout pipe 33 and the forked pipe 39. While air and water 57 are extracted from the evacuation pipe 59, the space between the filling concrete 17 and the levee body concrete 1 is filled with a water stopping material 63. After the end of filling the water stopping material, the end of the evacuation pipe 59 is blocked up by caulking 65, and the forked pipe 39 is removed. Further, the evacuation pipe 59 is cut at the position of the hydraulic iron pipe 3, and a lid 67 is set in the grout hole 13.
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