In-site disassembly method for rear supporting trailer when tunnel boring machine (TBM) is obliquely arranged

Abstract

An in-site disassembly method for a rear supporting trailer when a tunnel boring machine (TBM) is obliquely arranged comprises the following steps that (1) the TBM rear supporting trailer and a steel framework of each segment of the trailer are designed to be of detachable structures; (2) splicing type steel sleepers are arranged on the inverted arch surface and arc-shaped wall toes on the two sides of a tunnel; (3) combined lifting devices are installed on the splicing type steel sleepers; (4) the splicing type steel sleepers are placed in the position, to be jacked, of the rear supporting trailer needing to be disassembled, and then the splicing type steel sleepers are fixed; (5) a balance beam on the left side of each combined lifting device and a balance beam on the right side of each combined lifting device stretch to the position, to be jacked, of the lower portion of a bottom longitudinal beam of the trailer, and the balance beams are fixed; (6) the trailer is separated from the inverted arch surface of the tunnel by jacking; (7) the steel frames on the two sides of the trailer are moved inwards and connected in a butt joint mode; (8) the disassembled trailer is dragged and drawn out; and (9) the combined lifting devices are moved to the disassembling position of the next section of the trailer, and an operation cycle is finished. By the adoption of the method, disassembly of an in-site non-expansion underground chamber of the TBM rear supporting trailer under the limited space condition can be achieved, and no assistance of structures and large hoisting equipment is needed.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a method for in-situ dismantling of a rear matching trailer under a TBM tilted state and a composite lifting device used therefor. The method enables the TBM to perform an in-situ non-expanded chamber in a tunnel under an inclined posture. Disassemble. Background technique [0002] At present, large-scale hard rock tunnel boring machine TBM has been widely used in transportation, hydropower and other engineering fields. With the maturity and development of TBM technology, this construction technology has begun to be applied to the construction of inclined shafts in coal mines. [0003] After the TBM descends from the surface to complete the construction of the long tunnel, the TBM needs to be dismantled and transported locally due to space constraints. Due to the large weight and volume of the TBM, the operable space for in-situ dismantling is limited, a...

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Problems solved by technology

[0003] After the TBM descends from the surface to complete the construction of the long tunnel, the TBM needs to be dismantled and transported locally due to space constraints. Due to the large weight and volume of the TBM, the operable space for in-situ dismantling is limited, and it is difficult for personnel and machinery to operate, and large-scale hoisting The machinery cannot be used as an assistant at all, and the difficulty of the operation is manifested in the aspects of "small space, great difficulty, and high risk"

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