Thin-wall concrete pouring device and method for small-diameter tunnel long-segment second lining inverted arch

Abstract

The invention discloses a thin-wall concrete pouring device for a small-diameter tunnel long-segment second lining inverted arch. The device comprises an accommodating tank, chutes and a transport trolley, wherein a pump pipe fixing buckle is arranged at the upper part of the accommodating tank, multiple discharge ports and rotary gates are arranged on two sides respectively, and the chutes on twosides are detachable and can be folded; before pouring, a long-segment inverted arch is divided into multiple short segments according to length, pouring for the short segments is completed from farto near, when a single short segment is poured, a pump pipe is firstly mounted at the starting point of the segment, the transport trolley loads the accommodating tank to reach the pouring position after the accommodating tank is filled with concrete, then the gates on the two sides are opened for symmetrical unloading, the transport trolley returns to the pump pipe to be charged again after unloading until the pouring of the short segment is finished, and after the pouring of the short segment is completed, the excessive pump pipe is dismounted, and the pouring for the next short segment is carried out until pouring for all inverted arches is finished. The device is simple to operate, can prevent the pump pipe from switching on left and right sides during pouring, greatly reduces dismounting and connecting times of the pump pipe, effectively improves pouring efficiency and shortens the pouring construction period.

Description

technical field [0001] The invention relates to the technical field of tunnel concrete pouring, in particular to a small-diameter tunnel long segment two-lined inverted arch thin-walled concrete pouring device and a pouring method. Background technique [0002] When pouring thin-walled concrete for the second-lined inverted arch in the long section of a small-diameter tunnel, due to the narrow tunnel section, the long pouring length of the inverted arch, the long distance between the pouring points, and the space occupied by the steel pipe supports used to reinforce the formwork on both sides of the inverted arch, the conventional The pouring device is limited by space and distance and cannot be used. Generally, the method of manually moving the end of the pump pipe to the pouring port after long-distance pumping of concrete is adopted. During pouring, the pouring on both sides of the inverted arch section is uniform. , the pump pipe needs to be switched frequently on the le...

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the technical defects of the prior art that the pouring of thin-walled concrete in the long section of the small-diameter tunnel with the second-lined inverted arch easily causes waste of concrete and pollution to the formwork of the inverted arch, the present invention provides a second-lined inverted arch with the long section of the small-diameter tunnel Arch thin-wall concrete pouring device and pouring method solve the above technical problems

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