A method for reinforcing flimsy ground using pack anchor for decreasing excess pore water pressure of flimsy ground

摘要

The present invention relates to a pack anchor, which is a pack anchor including a free ledge and a fusing part, the fusing part being enclosed with a protective pack, wherein the pack anchor is a longitudinal member provided on an outer surface of the protective pack in a longitudinal direction, A pack anchor for guiding the pore water pressure dissipation of the disturbed settlement ground comprising at least one drainage material for discharging excessive pore water in contact with the ground in the direction of the free ledge " and " (A) inserting a pack anchor for excavating a ground by a water cutting method to form a perforation and for inducing dissipation of the pore pressure of the perturbed settlement ground on the perforation; (b) performing primary grouting on the perforations in which the pack anchors for leading to the pore pressure dissipation of the disturbed settlement ground are inserted; (c) performing secondary grouting by inflating cement milk into the protection pack; And (d) draining excessive pore water around the fixing unit after the secondary grouting through the at least one drainage material in the free length direction.