| 摘要 |
PURPOSE:To improve soft ground into a pollution-free and composite ground having a long-term stability and a high strength by injecting under pressure a mixture composed of cement, aggragate, and an inorganic soil improving agent into the soft ground in a beam-like form. CONSTITUTION:A mixture 1 of cement, an inorganic soil improving agent, and aggregate is placed on a soft ground 2 and gradually pressed by clawler into the soft ground while laying the mixture 1 by a bulldozer 4 to form a mixture layer 1a. By this work, large numbers of underground beams a and b are formed at a proper interval, and whereby water is forced to the ground's surface and a composite ground of long-term stability and an increased N value can be obtained. |
