| 摘要 |
PROBLEM TO BE SOLVED: To provide a ground reinforcing method using multipoint underground simultaneous injection, injecting plastic filler into a plurality of places at the same time, and confining and compacting the soil in a predetermined area utilizing enlargement with time of the plastic filler to thereby heighten the density of soil and reinforce the ground. SOLUTION: This method uses a plurality of filling pipes 1 for injecting the plastic filler into the ground at the respective filling spots, a plurality of unit pumps U1-6 for delivering the plastic filler to the respective filling spots and injecting the plastic filler into the respective filling spots, a flow rate-pressure measuring device 7 for measuring the flow rate and/or pressure of the plastic filler at the respective filling spots, and a centralized control device 6 for batch controlling the plurality of unit pumps U1-6. According to the method, the unit pumps U1-6 are operated and while the operation of the unit pumps U1-6 is controlled based on the information from the flow rate-pressure measuring device 7 by the centralized control device 6, the plastic filler is simultaneously injected into the plurality of spots provided to surround the predetermined area. Thus, the soil in the predetermined area is confined and compacted by the plastic filler gradually enlarged within the ground at the plurality of filling spots. COPYRIGHT: (C)2009,JPO&INPIT
|
