| 摘要 |
PROBLEM TO BE SOLVED: To effectively purify ground water in a pollution range unfavorable in water permeability in a construction method for purifying ground water in the pollution range by passing water through the pollution range of a ground. ! SOLUTION: A construction method for purifying ground water in a pollution range A, B by passing water through the pollution range A, B of a ground comprises: a process of constructing a water feeding drain 30 for feeding water into the pollution range A, B; a process of constructing a water pumping well 20 for pumping water from a region deeper than the pollution range A, B by subjecting the inside to a minus pressure (vacuum); a process of constructing a suction drain 40 for letting the ground water in the pollution range A, B descend to deeper than the pollution range A, B by sucking the ground water in the pollution range A, B with a suction power generated from a minus pressure of the water pumping well 20; and a process of discharging the ground water in the |
