METHOD FOR REINFORCING SOIL STRUCTURE BANK BODY

摘要

PROBLEM TO BE SOLVED: To provide a bank body reinforcing method suitable for such cases that a site cannot be assured or soil for construction is hard to be procured and capable of increasing a stability and a durability against heavy rain and earthquake. SOLUTION: A present bank body part E corresponding to a reinforcing area R is excavated. As required, filter layers SM and F are provided on the surface of the excavated bank body. Solidifying material such as cement is added to excavated bank body soil, and mixingly agitated with water to produce a large number of solidified soil lumps SS. The large number of solidified soil lumps SS are arranged on a lower flat part 12 close to each other. Packing soil PS formed of the excavated bank body soil is buried between the solidified soil lumps SS to form reinforcement soil layers D of the large number of solidified soil lumps SS and the packing soil PS. Soil covering layers PSa are built to form slopes covering the solidified soil lumps SS at positions mostly apart from a sloped part 14. After the filter layers F are constructed on the sloped part 14, and new reinforcement soil layers D are stacked in the same manner as described above to complete a reinforcement banking part G.