| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an auxiliary method which is used as the auxiliary for a soft ground improvement method and a ground decontamination method based on promotion of vacuumization and which can encourage improvement effects and decontamination in an improvement area as a whole uniformly and at an early stage. <P>SOLUTION: Two wells 1 and 2 are placed in the ground at a prescribed interval, and water and air are pressure-pumped into the ground from one well 1 through a lower strainer 10 while water and air in the ground are sucked from the other well 2 through a lower strainer 20. Specifically water supply by a water supply pump 12 and air supply by a compressor 15 are performed to one well 1 while water lifting by a lifting pump 21 and air intake by a vacuum pump 25 are performed from the other well 2. Then, pressure-pumping of water and air into the ground from one well 1 and suction of water and air in the ground from the other well 2 are performed repeatedly. <P>COPYRIGHT: (C)2013,JPO&INPIT |
