| 摘要 |
PURPOSE:To enable implanting of an amending agent through a hose and to enable to perform a safe and efficient work, by a method wherein a casing consists of a plural number of partial rods, and the partial rods are inserted into a ground together with the hose, previously inserted into the rods, for connection of the rods to each other. CONSTITUTION:A large number of partial rods 2, whereinto a hose 12 is previously inserted, is connected in turn to form a casing rod A. The casing rod is inserted as a ground 1 is cut with the casing rod turned by an inserting device B. In the case of the insertion, water in a water tank 21 is brought to high- pressure state by a pump 22 to feed it into the hose 12 or 18 to progress excavation with a jet of water through a lower end of a forward end cylinder 5. After the casing rod A is inserted to a given depth, the hoses 12 and 18 are separated from the pump 22, and are connected to a coupling part 24 connected to an implanting device 23 on a ground. If an amending agent is of a two-liquid type, an A-liquid and a B-liquid are separately implanted into the hoses 12 and 18 through hoses 25 and 26. |
