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    • 6. 发明专利
    • CONNECTION ENGINEERING OF TUNNEL AND SEGMENT FOR TUNNEL CONNECTION
    • JPH07259476A
    • 1995-10-09
    • JP7950694
    • 1994-03-25
    • TODA CONSTRUCTION
    • TADA KOJITANIGUCHI TORUNAKAGAWA MASAHIROTACHIKAWA YUJIUKEKAWA MAKOTO
    • E02D3/12E02D17/04E21D9/00E21D9/01E21D9/06E21D11/04E21D11/14
    • PURPOSE:To carry out digging of a natural ground between tunnels while performing an earth pressure countermeasure and a water stop countermeasure by restraining machinery weight and segment weight, easily adapting to a contruction environment in a big city such as acquisition of a site for vertical shafts, etc., minimizing earth covering, easily coping with setting of facilities such as expansion, contraction, branching, confluence, etc., of tunnel sections and setting of an emergency parking belt, etc., for each constant interval and without making a shielding machine excessively large against a tunnel of about hundreds meters. CONSTITUTION:Tunnels are connected to each other by digging a natural ground between the tunnels dug adjacent to each other with an interval. Land slide protection is carried out by covering the natural ground between the tunnels by way of press fitting land slide protection plates 14 in the natural ground from a segment main body 12 constituting at least one of the tunnels. A timbering material 32 is inserted into another segment main body 12 from one of the segment main bodies 12 on the inside of the land slide protection plate 14 and fixed. The tunnels are widened by digging the natural ground is surrounded by the land slide protection plates 14. The land slide protection plates 14 are supported by setting connection members 36 between the timbering material 32 and the land slide protection plates 14.