Ground improvement method for organic soil

摘要

The present invention removes organic soil in the first perforated hole formed in the organic soil layer located in the upper part of the ground, and then constructs a point foundation consisting of a tail portion formed in the lower soil layer and a head portion having an enlarged diameter in the upper organic soil layer, The present invention relates to an organic soil layer ground improvement method capable of securing the solidification strength of the point foundation and the bearing capacity of the head part, and controlling the amount of settlement by the tail part. The method for improving the organic soil layer of the present invention is to improve the soft ground in which the organic soil layer is formed on the upper part of the lower soil layer. Punching to form a first perforated hole, rotating the auger screw in place in a forward direction to remove part of the organic soil in the first perforated hole by discharging it to the outside, and lifting the auger screw to the ground to remove it; And (b) a tail portion is formed by injecting a solidified material into the second perforated hole formed by perforating the lower portion of the first perforated hole and mixing with soil, while the upper part of the first perforated hole is expanded and perforated to have a diameter than the second perforated hole. Forming a head portion by injecting a solidified material into the largely formed third perforated hole and mixing it with soil; It characterized in that it is configured to include.