Method for rapidly assembling starting construction equipment outside double-hole double-TBM tunnel by adopting continuous belt conveyor for deslagging in limited site

Abstract

The invention discloses a method for quickly assembling starting construction equipment outside a double-hole double-TBM tunnel by adopting a continuous belt conveyor for deslagging in a limited site, which comprises the following steps of: planning the construction length of a preparation hole of the tunnel, assembling TBM equipment at a section far away from a hole opening and then matching with an auxiliary part trailer while excavating and supporting construction of the preparation hole; each section of trailer is assembled and then stored in an idle position of a site, one month before preparation of a hole is completed, a vehicle and equipment access channel is arranged at a hole opening section, assembly of a TBM main machine part is started under the condition that construction of the preparation hole is not affected, and finally the target of fastest starting stepping of TBM assembly is achieved. According to the invention, the inside-hole and outside-hole flexible arrangement mode is adopted for the belt storage bin of the belt conveyor, so that the outside-hole site can be effectively saved, the space of the assembly site does not need to be expanded by additionally arranging a temporary bridge and the like, and remarkable social and economic benefits are achieved for saving land use and reducing cost input.

Description

technical field [0001] The invention relates to the technical field of tunnel construction constructed by a double-hole single-line TBM method, in particular to a method for quickly assembling starting construction equipment outside a double-hole double-TBM tunnel using a continuous belt conveyor to discharge slag in a limited site. Background technique [0002] Tunnel engineering using hard rock tunnel boring machine (TBM) construction, TBM equipment is mainly composed of main engine, equipment bridge, supporting trailer and other parts, TBM equipment switchboard generally has a length ranging from 200m to 300m according to the diameter of the cutter head For a complex equipment system, each component is transported from the factory to the construction site for assembly, and sufficient assembly space is required. In the case of an open site, the TBM host, equipment bridge, and supporting equipment are arranged in sequence, and assembled in their respective areas. Connected ...

AI Technical Summary

Problems solved by technology

1. Drilling and blasting method is used to construct the tunnel preparation hole first to provide space for TBM segmental assembly. During the excavation and support construction of the preparation hole, vehicle transportation and other operations occupy the site outside the tunnel. After the re-construction, the assembly work will start. The construction of the preparation hole and the assembly of the TBM cannot be carried out in parallel. After the start of the tunnel, the excavation of the preparation hole and the assembly of the TBM will be carried out in sequence.

[0005]2. There are many TBM parts, and they are all transported from the manufacturing plant to the site by car. The on-site assembly needs to be delivered to the site in advance, and the site is small. Parts are stored scattered, and they need to be transported twice during assembly, which affects the assembly progress

[0006]3. In addition to the existing narrow site outside the cave, the assembly site space needs to be expanded by adding military convenience bridges, etc., and ancillary projects such as bridge piers and abutments need to be constructed separately. will be extended and the construction cost will increase

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