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    • 2. 发明专利
    • WASTE DISPOSAL PLACE
    • JPH0368485A
    • 1991-03-25
    • JP20495589
    • 1989-08-08
    • KAJIMA CORP
    • YASUNAGA MASAMICHIKUBOTA MUNETAKAOGUMA YOSHIYUKIFUJIMURA HISAO
    • B09B1/00
    • PURPOSE:To obtain the waste disposal place having a large volume as compared with the site area, capable of being constructed at a low cost and without causing environmental deterioration by making the water level in a waste dumping space surrounded by the underground continuous wall extending to the impermeable layer slightly below the groundwater level. CONSTITUTION:Waste 10 is dumped in the space 5 filled with water 6, and the water level 7 rises. Accordingly, the water in the space is pumped up by a pump provided, and the level is kept slightly below the groundwater level 8 outside. Since the water pressure in the space is lower than the outside water pressure, sewage in the space does not flow out to the outside. The force acting on the continuous wall when in operation is low, the outside and inside groundwater levels under construction are the same, and strong force is not exerted. Consequently, the continuous wall can be built at a low cost, a water stopping work at the bottom is dispensed with, and the dumping space can be dug close to the lowermost end of the continuous wall.
    • 5. 发明专利
    • CUT-OFF CONSTRUCTION FOR UNDERGROUND STRUCTURE
    • JPS61286413A
    • 1986-12-17
    • JP12572685
    • 1985-06-10
    • KAJIMA CORP
    • OGUMA YOSHIYUKIYAGI KENICHIROTAKEUCHI HITOSHI
    • E02D5/02
    • PURPOSE:To obtain perfect cut-off effect and to enable drains to be easily set, by providing the construction side with joints and cut-off steel sheets for connecting the side surfaces of steel pipe sheet piles together via slight spaces, and by casting concrete outside the steel sheets. CONSTITUTION:Steel pipes 1 are connected together in order, and the side wall surfaces are combined with cut-off steel sheets 5, and the steel sheets 5 are welded in parallel with joints 2, 3 with some space between the sheets and the joints. After that, drains 6 are used for the space formed between the joints 2, 3 and the steel sheets 5, and at the lower ends of the drains, headrace channels 7 for infiltration facilities filled up with gravels 8 are formed. After the cut-off construction is formed, concrete 9 forming the frames of the underground structures of the side walls of underground tanks or the like is cast outside the steel pipes 1 and the cut-off steel sheets 5. As the result, by the cut-off construction of the underground structures, drains are easily formed, and stable construction and exact cut-off can be realized.