| 摘要 |
PROBLEM TO BE SOLVED: To provide a jet grouting method for constructing a solid body without making any air lock around an inclined excavated hole. SOLUTION: An excavated hole 1 is so bored that it is equipped with an inclination a to a vertical shaft, and a pipe 2 having a nozzle 3 for jetting a jet J downward at a slightly larger angleβthan the inclinationαto a radial outside and a rotary shaft right angled surface on the front end is inserted into the excavated hole 1. While jetting grout from the nozzle 3 to a specific distance from the lower part of the excavated hole 1, and the pipe 2 is pulled out while rotating it around the axial center to construct a solid body G in the ground.
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