A repairable drainage tunnel, construction method and repair method
A technology for drainage tunnels and tunnels, which is applied in water conservancy projects, tunnels, earthwork drilling and mining, etc. It can solve the problems of inconvenient maintenance of drainage tunnels, high maintenance efficiency, and short time consumption, so as to reduce construction difficulty, reduce safety production accidents, The effect of improving maintenance efficiency
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[0038] For the convenience of description, if the words "up", "down", "left" and "right" appear in the present invention, they only mean that they are consistent with the directions of up, down, left and right of the drawings themselves, and do not limit the structure.
[0039] This embodiment mainly solves the problem that the construction personnel cannot escape when a landslide accident occurs during the construction period of the drainage tunnel of the slag yard and the problem that the drainage tunnel cannot be repaired during the operation period. construction steps. The drainage tunnel excavation section, lining section, anchor shotcrete parameters and the size of the round culvert pipe described in the present invention can be adjusted according to hydrological characteristics and geological conditions.
[0040] The construction steps of the repairable drainage tunnel construction period are as follows:
[0041] (1) Excavate the city gate tunnel with a section of 5.00...
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