| 摘要 |
PROBLEM TO BE SOLVED: To provide a soil cutting improving agent for high pressure injection construction method and a high pressure injection construction method in which water mixed with a soil cutting improving agent for high pressure injection construction method is injected into a ground through an injection hole of an injection pipe inserted and installed in the ground to cut the ground and then a hardener is injected and filled or lightly injected to form a hardened body in the ground and during the construction process, sand in the cutting zone can be prevented from collapsing and the replacement ratio of fluidizing soil slurry and the hardened material can be increased and further, the hardened body having an objective diameter can be created against pressure-resistant function and favorably collect drain water in the soil and appropriately distribute water to the soil having shortage in water and further, distribute water to the soil having shortage in water and further, distribute excessive water to the drain material outlet and discharge it. SOLUTION: The soil cutting improving agent for high pressure injection construction method is constituted of a viscosity-increase agent and a flowability adjusting agent. The viscosity increase agent and the flowability adjusting agent are mixed together having a ratio of 70-98 mass prts. and 2-30 mass prts. respectively against the total 100 mass prts. to use the soil cutting improving agent for the high pressure injection construction method.
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