Shield segment with sump

Abstract

The utility model belongs to the field of subway shield tunnel construction, and particularly relates to a shield segment with a sump, which comprises a standard block segment, the sump is pre-buried in the standard block segment, the sump comprises a trapezoidal peripheral steel plate and a trapezoidal bottom steel plate, a water stop plate is welded in the middle of the sump, and anchoring steel bars are welded at two ends of the sump. The water collecting pit embedded part is additionally arranged, when shield construction reaches the lowest point, the standard shield segment with the water collecting pit is installed, a sewage pump can be placed in the water collecting pit and does not interfere with a chassis of a construction transport vehicle, and tunnel sewage can be discharged to the maximum extent.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of subway shield tunnel construction, especially relates to a shield segment with a water collecting pit. BACKGROUND

[0002] In the subway shield construction, sewage will be collected to the lowest point of the tunnel when washing the tunnel, sewage pump is used to pump out the sewage, and the sewage is transported to the outside of the tunnel through the pipeline. The sewage pump is used to form negative pressure by rotating the blade at high speed to pump out the sewage. The conventional shield segment does not have a water collecting pit, so that the sewage cannot be completely discharged, and the remaining sewage needs to be cleaned manually again, which increases the construction amount. In addition, the sewage pump is placed on the segment, and the height cannot be higher than the chassis of the transportation vehicle during tunnel construction, otherwise the running track of the transportation vehicle needs to be raised or other solutions need to be adopted for modification to avoid the interference between the sewage pump and the chassis of the transportation vehicle and the safety accidents caused by the interference. SUMMARY

[0003] The present application solves the problem of overcoming the deficiencies of the prior art and provides a shield segment with a water collecting pit.

[0004] The present application is achieved by the following technical solutions:

[0005] A shield segment with a water collecting pit, comprising a standard block segment, a water collecting pit is embedded in the standard block segment, a water stop plate is welded around the middle position of the water collecting pit, anchor steel bars are welded on the upper and lower parts of the water collecting pit, and the anchor steel bars are fixedly connected with the steel bars in the standard block segment.

[0006] Preferably, the water collecting pit is a ladder-shaped pit.

[0007] Preferably, the water collecting pit is surrounded by a steel plate around and a bottom steel plate.

[0008] The present application considers the structure of the shield segment itself, increases the embedded water collecting pit in the standard block segment, has simple structure and low cost, installs the shield segment with the water collecting pit when the shield tunnel construction reaches the lowest point, the sewage can be collected in the water collecting pit during the tunnel construction, the sewage pump placed in the water collecting pit can discharge the sewage at the lowest point of the tunnel to the maximum extent, manual cleaning is not needed again, the running track of the transportation vehicle does not need to be raised or other modification is not needed, the construction amount is reduced, the construction efficiency is improved, and the unsafe factors are avoided. BRIEF DESCRIPTION OF DRAWINGS

[0009] Figure 1 It is a structure schematic view used in the embodiment;

[0010] Figure 2 It is a structure schematic view of the standard block segment of the embodiment;

[0011] Figure 3 For the embodiment of the present application Figure 2 A-A cross-sectional structure schematic diagram.

[0012] In the figure, 1 standard block pipe piece, 2 top sealing block pipe piece, 3 adjacent block pipe piece, 5 water collecting pit, 7 anchoring steel bar, 8 water stop plate, 9 peripheral steel plate, 10 bottom steel plate. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical scheme and advantages of the embodiment of the present application more clear, the technical scheme in the embodiment of the present application will be clearly and completely described below in combination with the drawings in the embodiment of the present application. Obviously, the described embodiment is a part of the embodiments of the present application, rather than all the embodiments of the present application.

[0014] At present, a ring shield pipe piece is composed of six pieces, as shown in the attached Figure 1 The figure shows that it includes three standard block pipe pieces 1 (A type) at the lower part, top sealing block pipe pieces 2 (K type) at the top part and adjacent block pipe pieces 3 (B type) at both sides of the top sealing block pipe pieces 2, and each piece of pipe piece is connected to form a ring. The standard block pipe piece 1 at the bottom part is transformed into a pipe piece with a water collecting pit 5 in the present application, which is installed at the lowest point of the shield tunnel. During the tunnel construction, sewage can be collected into the water collecting pit, and the sewage at the lowest point of the tunnel can be discharged to the maximum extent through the sewage pump placed in the water collecting pit 5. In the later stage of the tunnel construction, when the track is paved and the bed is poured, the water collecting pit 5 can be filled with concrete, and a stable whole structure is formed after the concrete is solidified.

[0015] The above-mentioned water collecting pit 5 is pre-buried in the standard block pipe piece 1, and the pre-buried water collecting pit 5 is composed of 20mm thick steel plates which are welded together, and the steel plates are subjected to rust-proof treatment, including the following components: peripheral steel plate 9, bottom steel plate 10, water stop plate 8 and anchoring steel bar 7. In the embodiment, the water collecting pit 5 is preferably a ladder-shaped pit, wherein the peripheral steel plate 9 is in a ladder shape, and the peripheral steel plate 9 and the bottom rectangular bottom steel plate 10 are welded together to form the water collecting pit 5, and the welding is full welding according to the specification. A water stop plate 8 is welded on the outer periphery of the water collecting pit 5 at the middle position, and the water stop plate 8 is a steel plate, the root of which is full welded with the peripheral steel plate 9 of the water collecting pit 5, so as to ensure that the pre-buried water collecting pit 5 forms a water stop structure in the concrete structure of the standard block pipe piece 1. The anchoring steel bars 7 are welded on the upper part and the lower part of the water collecting pit 5 according to the specification, and the anchoring steel bars 7 are firmly connected with the steel bars in the standard block pipe piece 1.

[0016] During the construction, when the shield construction reaches the lowest point, the standard block pipe piece 1 with the water collecting pit 5 of the present application is installed, the sewage pump can be placed in the water collecting pit 5 without interfering with the chassis of the construction and transportation vehicle, the sewage in the tunnel can be discharged to the maximum extent, and the water collecting pit 5 can be filled with concrete in the later stage.

[0017] It should be noted that the above examples are only used to illustrate the technical solutions of the present application, and are not intended to limit the same. Those skilled in the art should understand that the technical solutions recorded in the above examples can still be modified, or some technical features can be replaced by equivalent features. Such modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A shield segment with a water sump, comprising a standard block segment (1), characterized in that: The standard block pipe piece (1) is embedded with a water collecting pit (5), a water stop plate (8) is welded on the outer periphery of the middle position of the water collecting pit (5), and anchor steels (7) are welded on the upper and lower parts of the water collecting pit (5), and the anchor steels (7) are fixedly connected with the steels in the standard block pipe piece (1).

2. The shield segment with sump according to claim 1, characterized in that: The water collecting pit (5) is a ladder-shaped pit.

3. The trench segment with sump of claim 1, wherein: The water collecting pit (5) is surrounded by a steel plate (9) around and a bottom steel plate (10).

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