| 摘要 |
PURPOSE:To prevent the occurrence of landslide by forming a netted pile structure by a method in which a pipe whose lower end is opened is inserted into an excavated pit, iron bars are sent, and then cement mortar is poured, the pipe is drawn out, and then the supply of high-pressure air and cement mortar is repeatedly made. CONSTITUTION:A pipe 10 whose lower end is opened is inserted into an excavated pit, iron bars 15 are set, and then cement mortar 14 is poured into the pit. Then, the pipe 10 is pulled out by a given length and high-pressure air 20 is supplied from the hole 12 of a head 11 to form an expanded portion 18. When the level of the cement mortar 14 placed is lowered, the mortar is further supplied from the hole 12 of the head 11. Furthermore, the pipe 10 is drawn out by a given length and said processes are repeated to form a pile 3. |
