Pipe segment waterproof structure for pipe seam expansion and construction method

Abstract

The invention relates to a pipe segment waterproof structure for pipe seam expansion. The pipe segment waterproof structure for the pipe seam expansion comprises a pipe segment, a first waterproof sealing pad, a second waterproof sealing pad, a first water expansion water stop strip, a second water expansion water stop strip, a joint material, surface grouting holes, first pipe seam grouting holes, second pipe seam grouting holes, grouting openings, main grouting pipes, branch grouting pipes, weak current circuit wires, an indicator lamp a, an indicator lamp b and an external battery. The first water expansion water stop strip, the first waterproof sealing pad, the second water expansion water stop strip, the second waterproof sealing pad and the joint material are arranged in a peripheralabutted seam of the pipe segment in sequence from outside to inside. The pipe segment waterproof structure for the pipe seam expansion has the beneficial effects that a pipe segment grouting system is independent, and the pipe seam is repaired in a partitioned and targeted mode; multiple waterproof measures are set, and the emergency waterproof quality is ensured; the special pipe segment is prefabricated in a factory, and the quality of the pipe segment is guaranteed; a waterproof warning system is set, and the water leakage situation is grasped immediately; and multiple grouting hole channels are reserved, and quick sealing of water leakage is achieved.

Description

Technical field [0001] The invention belongs to the technical field of waterproof protection of subway segments, and in particular relates to a segment waterproof structure and a construction method aimed at the expansion of pipe joints. It is suitable for the protection and repair of water leakage between the circumferential and longitudinal joints of the pipe segments. The problem of waterproof failure caused by seam opening is particularly applicable. Background technique [0002] With the widespread promotion of subway transportation, the construction and opening of subway tunnels has brought convenience for people to travel. The tube segment structure is widely used in subway construction. Each segment has a good waterproof effect. However, the ring and longitudinal seams left behind after the segment are assembled have become the weak waterproof location of the subway tunnel, which is easy to cause leakage. Water problem. [0003] At present, the conventional method is to s...

AI Technical Summary

Problems solved by technology

However, in actual engineering, when the cross-sectional deformation of the segment or the staggered deformation occurs, the segment seams may be opened and staggered, resulting in partial or complete separation of the gasket, resulting in waterproof failure

Secondly, when the underground water pressure outside the tunnel is high, the simple waterproofing effect of the gasket may not be tightly sealed, and the high-pressure water can still enter the tunnel through the weak point of the seam waterproofing, resulting in local leakage

In addition, under long-term pressure and aging, the gasket is prone to stress relaxation or deformation, which reduces the waterproof ability of the gasket itself, increases the maintenance cost of the tunnel in the later stage, and also affects the operational safety of the tunnel.

[0004] To sum up, the existing technology generally has problems such as easy failure of waterproof measures, limited waterproof effect, single protection method, high maintenance cost in the later period, and inability to effectively block high-pressure water, etc., which urgently need to be solved by improving technology

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