| 摘要 |
PROBLEM TO BE SOLVED: To dissolve inconvenience of a conventional example, to smoothly embed a drainage material inside a casing together with a head just by single drilling by simultaneously erecting the casing and disposing the drainage material, to allow acceleration and cost reduction of construction, to eliminate the generation of excavation surplus soil, and to eliminate the need of disposing industrial waste as sludge by not using water in excavation/earth removal.SOLUTION: In an erection method of a drainage material, drilling is performed by inserting a casing to soil using a construction machine for casing erection, the drainage material of an appropriate length in a hollow cylindrical shape is installed inside the casing to be erected, and the drainage material is disposed in the soil by pulling out the casing thereafter. A casing 21 is an excavation casing having excavation driving force having an excavation head 27 placed at the distal end thereof, the excavation head 27 and a distal end of a drainage material 2 are connected, the casing 21 and the drainage material 2 are simultaneously erected, the excavation head 27 is left underground together with the drainage material 2 as an anchor, and the casing 21 is pulled out. |
