SHALLOW OVERBUDEN TUNNEL CONSTRUCTION METHOD

摘要

The invention superficial tunnel does not allow for surface subsidence in the superficial tunnel crossing the road or rail from the bottom relates to a method, superficial tunneling method according to the present invention, the load for measuring the subsidence of the upper portion of the tunnel, the tunnel construction around the superficial Extended small meter (Rod Extensometer; 11) and the horizontal deformation of the superficial tunnel excavation of the sink Cleveland furnace meter (Inclinimeter; 12) for measuring a step (S1) to install; The furnace of Cleveland meter 12 for excavating the pilot tunnel excavation line and 21 of the central portion of the Temple of the tunnel to the lower position of the center of the left and right pilot tunnel excavation line on both sides of the pilot tunnel (21, 22, and a step (S2) to install the pilot tunnel for the pipe loop (30) in the longitudinal direction of the tunnel in the excavation line 23); Excavating the excavation line of the center and the left and right of the pilot tunnel (21, 22, 23) with ringkeot and install the band-shaped drain boards 35 at the bottom of the inside of the pipe loop (30) is already installed in the excavation line, and the strip-like Each of the excavation line of the drain boards in the lower pre-loading, but jaekking the steel ribs 40 on the inside jack 50 of the unit 35, the steel ribs 40 are the center, left and right of the pilot tunnel (21, 22, 23) laying the left and right sides of the steel ribs 41 to both sides on both sides, the step (S3) and is built by connecting the arched steel ribs 42, the preloading jack 50 via the left and right between the steel ribs 41; Constructed a pillar portion (25, 26, 27) with a base and columns on each of the right and left side walls of the center and left and right pilot tunnel (22, 23) of the pilot tunnel 21 of the center and, of the pillar portion 25 and step (S4) for grouting the upper part of Heaven; But form the main tunnel (28) is supported on both sides of the pillar portion 25 of the left and right pillars (26, 27) of the pilot tunnel (21) of the center, along the excavation line of the main tunnel 28 installed so that the beams prophet pipe loop (31) for the main tunnel in the longitudinal direction, and the pillar portion 25 and the left and right both sides of the central pilot tunnel of the pilot tunnel (21) (22, 23) of the pillar portion (26, 27, steel ribs 40 and the pilot tunnel for the pipe loop (30) in the step (S5) to the inside of the dissolution); The band-shaped installing drain boards 35 at the bottom of the inside of the tunnel for the main pipe loop (31) along the main tunnel excavation 28 in ringkeot and pipe loop for the main tunnel (31), the band-shaped drain boards 35 the lower pre-load the steel ribs 40 on the inner side of the step is characterized in that consisting of (S6) to jaekking with jack 50. ; The present invention thus constituted the road, a method mainly used for the tunnel can not be allowed to wonjiban settlement in terms of the tunnel, the upper part of the state space is limited, such as railways and, all except the ultra soft ground can be applied to the soil, and in particular, the curve can be constructed tunnels, to glass in the air with a special technique of conventional economics than the tunnel, and the shape of the tunnel arch tunnel, two arches, one arch, one does not have a pilot tunnel arch tunnel etc. can be variously constructed for.