Construction method of underground pipe gallery passing through underground concrete water pipe

Abstract

The invention provides a construction method of an underground pipe gallery through an underground concrete water pipeline. The construction method comprises the following steps that a foundation pit is excavated around the concrete water pipeline by adopting a sloping construction method; the external two sides of a slope are each provided with a conversion pool, a steel pipe is arranged between the two conversion pools, and the two ends of the steel pipe extend into the two conversion pools correspondingly; the portions, in the two conversion pools, of the concrete water pipeline are provided with a water inlet and a water outlet correspondingly; the concrete water pipeline is cut off between the two conversion pools, and cut-off openings are blocked; pipe gallery construction is conducted; and after pipe gallery construction, backfilling is conducted to the position below the concrete water pipeline by a set distance, a concrete plate belt with the thickness being the preset distance is arranged between the two conversion pools, the concrete water pipeline is recovered, the first conversion pool and the second conversion pool are dismounted, backfilling is conducted to a roadbed, and the road surface is constructed. According to the construction method, the steel pipe is adopted, after excavation of the pipe gallery is completed, the concrete water pipeline is recovered, and it is ensured that corrosion prevention and sludge removing of the concrete water pipeline after construction do not need to make a detour.

Description

technical field [0001] The invention relates to the technical field of underground pipe gallery construction, and more specifically, relates to a construction method for an underground pipe gallery passing through underground concrete water pipes. Background technique [0002] The construction of underground comprehensive pipe gallery, especially in the old urban area, will inevitably encounter various obstacles. In particular, when the pre-laid underground pipe gallery encounters underground concrete water pipes, the traditional method is to reroute the concrete water pipes, that is, to arrange another one first. The concrete water pipes are tripped to avoid the excavation range of the underground pipe gallery, and the excavation is organized after another concrete water pipe is connected to the original underground concrete water pipe. Because the underground pipe gallery is a linear project, if the line is changed, the concrete water pipe needs to detour for hundreds or e...

AI Technical Summary

Problems solved by technology

Because the underground pipe gallery is a linear project, if the route is changed, the concrete water pipe needs to detour for hundreds or even thousands of meters. Not only the amount of work is large, the cost is high, the construction period will also be affected, and the detour pipeline will also affect the smooth discharge of sewage

[0003] In addition, when the pre-laid underground pipe gallery crosses the underground concrete water pipe, the concrete water pipe cannot be cut off, otherwise it will not be able to drain water, and the pre-laid underground pipe gallery has no site diversion, so the laying of the underground pipe gallery cannot be realized

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