| 摘要 |
PROBLEM TO BE SOLVED: To smoothly perform work for recovering and separating a surplus solidifier solution, by reducing the quantity of the surplus solidifier solution to be disposed of or mixed soil thereof, in a soil cement mixing method, and to obtain a homogeneous underground wall with good cut-off properties by facilitating work for erecting a stress material in the construction of a wall body. SOLUTION: In a recycling method for the surplus solidifier solution, the surplus solidifier solution, which is separated from surplus mixed soil of in-situ soil and a solidifier solution, is injected into excavated soil with a new solidifier solution; when the in-situ soil is cohesive soil, the solidifier solution composed of the surplus solidifier solution and the new solidifier solution is injected in such a manner that the quantity of the injected solidifier solution is set at 1,000-1,500 liters per 1,000 liters (1 m<SP>3</SP>) of the excavated soil of the in-situ soil; when the in-situ soil is sandy soil, the quantity of the injected solidifier solution is set at 1,000-1,200 liters; and when the in-situ soil is gravel soil, the quantity of the injected solidifier solution is set at 800-1,000 liters. COPYRIGHT: (C)2004,JPO
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