Construction method for changing mining method tunnel into shield method single shaft origination

Abstract

The invention provides a construction method for changing mining method tunnel into shield method single shaft origination. The construction method comprises the following steps that: S1) after origination well mining construction is carried out to a designed depth, chiseling away a building enclosure structure between an origination well and an existing mined tunnel to enable the origination welland the mined tunnel to communicate; S2) adding a lengthening platform on the tail part of an original upper platform of a last segment of shield tunneling machine trolley, and lengthening a belt conveyor installed on the upper platform to the lengthening platform; S3) hoisting multiple segments of shield tunneling machine trolley and shield tunneling machine main body equipment into the origination well in sequence; S4) installing small gantry crane equipment used for transferring materials in the mined tunnel; and S5) installing multiple segments of shield tunneling machine trolley and theshield tunneling machine main body equipment, after the shield tunneling machine main body equipment is debugged, carrying out shield tunneling machine origination, and discharging muck generated by the origination mining of the shield tunneling machine through the mined tunnel. According to the construction method disclosed by the invention, the problem of shield tunneling machine underground assembling is solved, the problems of construction muck outward transportation and material transportation in an origination segment can be solved, and therefore, the shield tunneling machine is successfully originated on schedule.

Description

technical field [0001] The invention relates to the technical field of shallow-buried underground excavation tunnels, in particular to a construction method starting from a single-shaft tunnel with a shield tunneling method from a mining method. Background technique [0002] Due to the limitation of geological conditions in the tunnel construction process, it is necessary to change the tunnel construction method from the mining method to the shield tunneling method construction. A water conservancy underground excavation tunnel has been excavated at the excavated tunnel position, and the shield machine trolley of the shield machine needs to pass through The launch shaft is stored in the excavated water conservancy tunnel, and there is no slag discharge wellhead in the early stage, so it is necessary to solve the problems of difficult slag discharge and material transportation during the assembly of the shield machine down the well and construction of the start section. Cont...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a construction method for starting from a mine-based tunnel instead of a single shaft using a shield method, which solves the problem of assembling the shield machine down the shaft, and the problem of transporting construction dregs and materials in the starting section, so that the shield machine can be carried out on schedule. successful start

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