Circular water delivery tunnel wall window-by-window layered pouring system and construction method

Abstract

The invention relates to a circular water delivery tunnel wall window-by-window layered pouring system and a construction method. The circular water delivery tunnel wall window-by-window layered pouring system and the construction method are mainly suitable for circular water delivery tunnel wall pouring construction. The layered pouring system is composed of a main hopper, a main flow dividing pipe, a second-level hopper, a secondary flow dividing pipe, a third-level hopper, an upper grouting pipe, a flow dividing string barrel, a middle grouting pipe and a lower grouting pipe. The construction method mainly comprises the construction steps of construction preparation, needle beam formwork system installation, trolley walking, layered pouring system installation, flange plate and groutingassembly installation, camera installation, tunnel side wall concrete pouring, tunnel vault concrete pouring, grouting system dismounting, demolding and lining maintenance. According to the circularwater delivery tunnel wall window-by-window layered pouring system and the construction method, lining side wall concrete enters a mold layer by layer and window by window, the defects of concrete segregation, aggregate accumulation, herringbone slope cold joints and the like are effectively avoided, the entity quality and the appearance quality of lining side wall concrete pouring are improved, the side wall pouring pipe replacing procedure is reduced, the labor intensity is lowered, and the pouring time is saved.

Description

technical field [0001] The invention relates to a window-by-window layered pouring system and construction method for the wall of a circular water conveyance tunnel, which is mainly suitable for the pouring construction of the wall of a circular water conveyance tunnel. Background technique [0002] Due to the reasonable structure and good mechanical performance of circular tunnels, pressurized tunnels such as power generation diversion tunnels, flood discharge tunnels, sand washing tunnels and some irrigation diversion tunnels in water conservancy and hydropower projects all adopt circular structures. Because hydraulic tunnels have to pass through water and prevent water erosion, they have higher requirements for the quality of concrete pouring. [0003] In the traditional tunnel wall pouring process, there are often the following problems: (1) During the side wall pouring process, multiple pipe changes are required, the process is complicated, and the labor intensity is hi...

AI Technical Summary

Problems solved by technology

[0006] Aiming at the deficiencies in the prior art, the present invention provides a method that reduces the process of pouring and replacing pipes for side walls, reduces labor intensity, saves pouring time, improves the physical quality and appearance quality of concrete pouring for lining side walls, and solves the problem of the thickness of vault concrete. Insufficient and vault void problems, a circular water tunnel wall-by-window layered pouring system and construction method with good technical and economic benefits

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