LANDSLIDE PREVENTION PILING AND INSTALLATION METHOD FOR LANDSLIDE PREVENTION PILING

摘要

This landslide prevention piling (1) is buried through a mobile layer (11), located on the surface layer side, and a immobile layer (12), located on the lower layer side, of the ground (10) with a sliding face (5) as the boundary, and comprises: an anchor portion (21) and a pressure-bearing portion (26) made from a tubular member and centered on an axial line (P1); a first blade portion (22) provided in the peripheral face (21c) of the anchor portion (21), forming a helix centered on the axial line (P1), and disposed in the immobile layer (12); and a second blade portion (28) provided in the peripheral face (26c) of the pressure-bearing portion (26), forming a helix centered on the axial line (P1), and disposed in the mobile layer (11).