CLEANING CONSTRUCTION METHOD FOR CONTAMINATED GROUND AND WATER CIRCULATOR USED FOR THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a cleaning construction method for contaminated ground capable of cleaning the entire part of the contaminated ground by uniformly circulating water in the contaminated ground, and a water circulator used for this construction method. SOLUTION: Outer pipes 1 provided with a plurality of expandable packers 2, inflow ports 3 for admitting fluid into the packers 2, and a plurality of water flow ports 10 for injecting or sucking water into or from the ground G are respectively inserted into injection wells IW and draw wells DW. The packers 2 are expanded to compartmentalize the contaminated ground G to multiple stages in the depth direction and thereafter inner pipes 13 having a plurality of independent hoses 14 which are flow passages for the water injected or sucked to or from the plurality of the ports 10 are inserted into the wells IW. The water cleaned by a pollution treatment apparatus 16 is injected through hoses 14 of the injection wells IW into the ground G from the ports 10 and the water in the ground G is sucked from the ports 10 of the draw wells DW and is sent through the hoses 14 to the apparatus 16, by which the water is circulated in the routes independently by each of the ground stages G compartmentalized to the multiple stages and the contaminated ground G is cleaned. COPYRIGHT: (C)2004,JPO