| 摘要 |
PURPOSE:To shorten a term of works and to reduce a cost, by a method wherein hydraulic jacks are located in a gap between a landslide protection wall and a temporary structure, pressurization is effected by pressing-in fluid through a pouring port, and the landslide protection wall is corrected and held by means of a reaction force of the temporaty structure. CONSTITUTION:A temporary structure of a waling beam 2, a cut beam 3, and an angle brace beam 4 is built across a landslide protection wall 1. Hydraulic jacks 5, serving as the landslide protection wall, are suspended in places in all gaps between the waling beams 2 through the medium of a pouring port 6, and fluid is pressed in as it is regulated. An excavating work is conducted, pressure is reduced for contraction through discharge of liquid by opening a discharge ports 7 of the hydraulic jacks 5, and the hydraulic jacks 5 are removed from the waling beam 2 to disassemble the structure. This enables correction of bending of the landslide protection wall and provision of a holding state, and permits migration of a work to a following process simultaneously with completion of the charging work of the hydraulic jack. |
