EMBEDDING CONSTRUCTION METHOD OF CHEMICAL LIQUID INJECTION PIPE FOR PURIFYING POLLUTED SOIL

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PROBLEM TO BE SOLVED : To provide an embedding construction method of a chemical liquid injection pipe 2 constituted so as not only to simply embed a chemical liquid injection pipe 2 in a polluted soil bed 1 during a short construction period so as to traverse the polluted soil bed 1 but also to prevent the clogging of the chemical liquid injection pipe 2 caused by the pushing-in of earth and sand into the injection holes formed to the chemical liquid injection pipe 2. SOLUTION : After a boring hole 5 is drilled in the polluted soil bed 1 by the excavation tool 4 attached to the leading end of a casing pipe 3 in a freely drawable manner so as to traverse the polluted soil bed 1, the chemical liquid injection pipe 2 is inserted in the casing pipe 3 so that the leading end thereof reaches the excavation tool 4. Accordingly, the chemical liquid injection pipe 2 is inserted in the casing pipe 3 without being into friction contact with the inner surface of the boring hole 5 at the time of insertion and the clogging of the chemical liquid injection pipe 2 by earth and sand pushed in the injection holes is prevented. Next, the casing pipe 3 is draw out of the boring hole 5 while leaving the excavation tool 4 in the ground. COPYRIGHT : (C)2009, JPO&INPIT