| 摘要 |
PROBLEM TO BE SOLVED: To provide a filling method for a void capable of securely filling a filling material without leakage of the filling material from a gap even when there is a gap communicating with the void or even under the conditions of underground water or flowing water. SOLUTION: Cement milk (A-liquid) including cement and water, or cement, water, and air bubbles and bentonite milk (B-liquid) including bentonite and water, or bentonite, water, and air bubbles are mixed together as a plastic material for a first injection material. The first injection material is filled (ST1) into a specified zone in a void. Subsequently, a second injection material prepared as a flowable substance composed of the cement milk (A-liquid) including cement and water, or cement, water, and air bubbles is filled (ST2) in the remaining filling zone of the void. In this way, the first injection material and the second injection material are placed one after the other to fill the void. |
