发明名称 IMPROVEMENT WORK FOR SOFT GROUND
摘要 PROBLEM TO BE SOLVED: To achieve consolidation by efficiently draining water from soft ground with excellent workability and omitting the use of large-scale construction machinery by driving paper pipes internally filled with sand into soft ground almost in a vertical state and using it as drain pipes. SOLUTION: A paper pipe 21 is wound spirally with stripes of old corrugated boards or woody paper, and a plurality of spiral pipe bodies are laminated in inner and outer directions. Moreover, paper stripes constituting each spiral pipe body are mutually intersected, spiral direction of the paper stripes of each spiral body is made in reverse direction each other, thereby giving a high strength to the paper pipe 21 produced. Then, the paper pipe 21 is closed with a metal cap 23 attached to the bottom end portion of the paper pipe 21 and is filled up with sand 22. In this way, a casing pipe 14 provided in the upper end portion by a boring excavator 13 is connected in a concentric state, and the paper pipe 21 is inserted by the pipe 14 into soft ground 11. In this way, the paper pipe 21 is directly inserted to the soft ground 11 thereby forming a drain pipe 20, improving the workability and shortening the period of time required for improving the soft ground 11.
申请公布号 JP2000178959(A) 申请公布日期 2000.06.27
申请号 JP19980352515 申请日期 1998.12.11
申请人 MIZUFUJI HIDEKATSU;NIPPON SHINKO KK 发明人 MIZUFUJI HIDEKATSU
分类号 E02D3/10;(IPC1-7):E02D3/10 主分类号 E02D3/10
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