DISASSEMBLING SYSTEM FOR THOROUGHFARE TUNNEL Russian patent published in 2005 - IPC

FIELD: building, particularly disassembling means.

SUBSTANCE: system comprises disassembling cavity formed by cut-and-cover method and including a tray, transversal end solid walls including rear and front ones and longitudinal side solid walls. End walls have windows. Side walls have outer metal isolation formed of dividers and matched panels. Dividers form anti-filtering screen and have interlocks. Matched panels are conjoined with tray waterproofing means with forming watertight shell. Walls consist of monolithic inner reinforced concrete part, anti-filtering screen and outer protective concrete layer in wall thickness. All above components form a single structure. Outer protective layer fills depressions in dividers and matched panels. Each matched panel includes at least two elongated members having closed cross-section outline and connected one to another with at least one part secured in air-tight manner to members to be connected. The part extends along medium longitudinal panel plane or is parallel thereto and is continuous in length. Fixedly secured to members to be connected are additional connectors intermittently extending along panel length and located in longitudinal planes parallel to medium longitudinal panel plane and displaced in both directions from above plane for 0.1R - 1.0R distance, where R is distance from medium longitudinal panel plane to outermost point on panel surface measured in panel cross-section. Rear transversal wall of disassembling chamber is arranged in area of closed tunnel part abutment to chamber. Tunnel end part abutting disassembling chamber is located in concrete body previously built in ground. Concrete body has strength of 15-35% of that of end tunnel part lining. Concrete body length is not less than 1/3 of disassembling chamber length.

EFFECT: increased structure strength by cooperation of disassembling system and closed tunnel part built into soft ground including watered ground, possibility of optimal material distribution in correspondence with load on tunnel parts, increased strength in tunnel end part, providing of tunneling machine accurate and stable position in disassembling tunnel chamber, prevention of deformation in above tunnel part and as result prevention of deformation of buildings and installations located near tunnel building site.

22 cl, 24 dwg