| 摘要 |
PURPOSE:To completely prevent the occurrence of muddling of water by a method in which a soil composition formed by mixing soil with a binder with or without a hardener is discharged from a tube into water and also a coagulant is jetted to near the end of the discharge tube. CONSTITUTION:A soil composition 3 containing a binder giving caking power to soil particles and sand grains and also to ensure a given fluidity or a hardener to harden and solidify the soil particles with the binder is supplied by a pump into a discharge tube 1 and discharged from the discharge end 1a to deposit the layer of the composition 3 on the bottom ground (l) under water. Although a suspension layer 4 is formed on the periphery of the discharged position when the grain size of soil is smaller or the discharge speed is high, the suspension layer 4 is coagulated by a coagulant jetted from the end 2a of a coagulant sending pipe 2 and sedimented on the soil composition 3 so deposited to prevent the occurrence of muddling. The prevention measure against muddling when charging the soil composition can be taken at low cost.
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