| 摘要 |
PROBLEM TO BE SOLVED: To solve the problems wherein the tip opening of a long impregnation pipe is blocked up with sediment to disable chemical discharge, the chemicals flow down to the discharge opening side, press-in balance to the natural ground is bad, the insert work for the long impregnation pipe is difficult, and the quantity of unnecessary residual chemicals is increased to be uneconomical. SOLUTION: In this device for natural ground consolidation process, a unit pipe (a) is formed by penetrating a plurality of small-diameter impregnation passages 12-1 to 12-6 at equal spaces in a thick peripheral wall 11 surrounding a large-diameter through hole 10. A plurality of thus constructed unit pipes (a) are connected to obtain a required length by connectors (b), (j), and a plurality of serial impregnation conduits d1 to d6 are formed by the small-diameter impregnation passages 12-1 to 12-6 of the respective unit pipes (a) by such connection. Discharge openings e1 to e6 are formed in the midway of required one of the impregnation conduits d1 to d6, and the conduits are inserted in a long lining pipe (i) having a pierced long hole c' of the natural ground (c) or a through-hole i' fitted thereto. COPYRIGHT: (C)2004,JPO
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