LANDSLIDE PROTECTION WALL TIMBERING MATERIAL

PURPOSE: To conduct the assembly of a length-adjusting member mainly on the ground, to remove high-place operation and improve safety, to economize jack hire because a Jack is removed and a hydraulic jack can be diverted on its midway even when the hydraulic jack is used as a pre-load jack, to utilize the jack as one having large stroke width by previously combining the jack and an adjusting material and to introduce sufficient pre-load. CONSTITUTION: A landslide protection wall timbering material consists of an outer box material 11 and an extension material 12 inserted into the outer box material 11 from an end section as an expansion member previously bonded with a landslide protection wall timbering main material on the ground, and an opening 17 is formed to the top face of the end section in the outer box 11. A hydraulic jack 20, which is taken in and out freely from the opening 17, and adjusting materials 21a-21c are disposed in a clearance between the end of the extension material 12 and another end of the opening 17 in the outer box material 11, and the extension material 12 after movement by the hydraulic jack 20 and the outer box material 11 are fixed by temporary assembling bolts 23.