Single-track railway tunnel full cross-section excavation rack and construction method thereof
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A single-track railway, full-section technology, used in tunnels, tunnel linings, drilling equipment and methods, etc., can solve the problems of humanization, safety, low practicability, rough and simple processing, etc., and achieve convenient manual operation. Effect
Pending Publication Date: 2019-08-16
ERCHU CO LTD OF CHINA RAILWAY TUNNEL GRP
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At present, domestic excavation work benches generally use section steel tailor wel...
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Embodiment 1
[0041] as attached figure 1 with 2 As shown, a full-section excavation bench of a single-track railway tunnel includes a bottom beam 1, a column 2, a side working platform 3, a middle turning working platform 4, a side telescopic sleeve 5, a distribution box 6, and a lower door beam 7. Guardrail 8, upper door beam 9, climbing ladder 10, upper working platform 11, middle working platform 12, front telescopic sleeve 13, escape rod 14. The above-mentioned components should be processed with steel materials, and the components should be connected in the form of bolts and flanges, and the necessary stiffness and stability calculations should be carried out.
[0042] There are two bottom beams 1, which are arranged parallel to each other. The bottom beams are designed as a ship-shaped structure to reduce the frictional resistance between the bottom beams and the ground when the platform is moved, and the two bottom beams 1 are equidistant along the length of the bottom beams. Ther...
Embodiment 2
[0049] Such as image 3 Shown, specify construction method of the present invention:
[0050] Step 1. Construction preparation: carefully check the drilling equipment, wind, water, electricity and other pipelines before construction.
[0051] Step 2. Measure and set out the center line: before excavating the borehole, the surveyor should measure and set out the section, center line and elevation of the tunnel excavation.
[0052] Step 3, the excavation bench is in place: place the excavation bench at an appropriate position, extend all the side telescopic sleeves 5 and the front telescopic sleeve 13 to a suitable position on the rock surface of the tunnel and lay a metal expansion net, The middle part turning operation platform 4 is turned over, so that follow-up manual hole drawing, drilling and charge operation.
[0053] Step 4. Draw blastholes, drill holes, and charge: according to the measurement and setting out, draw the excavation positions of peripheral holes, bottom ...
Embodiment 3
[0058] Further, a power distribution box 6 is also arranged on the excavation platform, which is installed on any side working platform.
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Abstract
The invention discloses a single-track railway tunnel full cross-section excavation rack. The single-track railway tunnel full cross-section excavation rack includes bottom beams, stand columns, lateral fixing platforms, lateral extensible sleeve pipes, upper part working platforms, middle part working platforms, front part extensible sleeve pipes, middle part turnover working platforms, upper door beams, lower door beams, a crawling ladder, and an escaping rod, wherein the stand columns are mounted on the upper parts of the bottom beams, an door-shaped integral structure is formed by the stand columns, the upper door beams and the lower door beams, the lateral working platforms are mounted on the laterals of the stand columns, the upper part working platforms are mounted on the upper doorbeams, and the middle part working platforms are mounted on the lower door beams; the front extensible sleeve pipes are mounted on the lower door beams and the lateral working platform; the middle part turnover working platforms are mounted inside the stand columns; the crawling ladder is mounted on the rack, and the escaping rod is mounted between the upper part working platform and the ground;and guardrails are mounted on the upper part working platforms, people can be prevented from falling, and safety of working personnel is ensured. The single-track railway tunnel full cross-section excavation rack is reasonable in structure, humanized in design, high in fracture surface applicability, and good in safety protection measure, and the maximum operating space for other processes of tunnel excavation is ensured.
Description
technical field [0001] The invention relates to the technical field of construction of a single-track railway tunnel, in particular to a full-section excavation platform for a single-track railway tunnel and a construction method thereof. Background technique [0002] The full-face excavation method is a common excavation method for drilling and blasting construction of single-track railway tunnels. It has the characteristics of one-time drilling and blasting, one-time excavation and forming, and comprehensive advancement. The excavation workbench is a common tool in the process of excavation and drilling. At present, domestic excavation work benches generally use section steel tailor welding, which is crude and simple in processing, and is not high in humanization, safety, and practicability. Therefore, it is of great value and significance to re-innovate the research and innovation of the full-section excavation bench for single-track railway tunnels. Contents of the in...
Claims
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