| 摘要 |
PROBLEM TO BE SOLVED: To achieve grout runaway prevention effectively.SOLUTION: In a grout injection method, an alkaline liquid is filled in a clearance between a filling pipe and a natural ground when the filling pipe is installed, in a wild place and a boundary layer of a subgrade, or in a surface of neighboring underground structures in advance, then a slow setting type acidic water glass grout is injected, the acidic water glass grout and the alkaline liquid are brought into contact and mixed with each other, thereby gelated within five seconds, and thereafter runaway prevention of the acidic water glass is attempted. In this case, limes, water glass, and an alkaline liquid consisting of a mixture thereof may be filled. |
