Connection branch pipe of built shield pipeline

Abstract

The utility model discloses a built shield pipeline access branch pipe which comprises a construction land, sleeve valve pipes are symmetrically arranged in the construction land, a steel grating is arranged on the lower surface of a foundation pit inspection well, a shield pipeline is arranged on the lower surface of the steel grating, a steel support is arranged on the inner side of the steel grating, and a riding well pipeline is arranged on the other side of the steel support. And the lower surface of the riding well pipeline is connected with the upper surface of the shield pipeline. By means of the construction measures in the mode, the problem that dirty rainwater of a newly-built pipeline converges into a built shield pipeline can be solved; the situation that the whole access point position is reconstructed, and large manpower and material resources are consumed can be avoided; the construction period of the access point position can be shortened; the main pipeline can properly work with water according to conditions, and strict dry work is not needed; the damage to the surrounding road surface can be reduced, the settlement risk of the surrounding road surface is avoided, the measure can achieve multiple purposes, the construction cost is reduced, and higher economic benefits are created.

Description

Technical Field

[0001] The utility model relates to the technical field of municipal engineering, and specifically relates to a branch pipe access to a built shield pipeline. Background Art

[0002] The holes opened above the shield pipe segments are all based on the planning that has been done during the design. Reinforced segments are prepared in advance where holes are needed. After the shield segments are formed, holes are opened at the reinforced segments. If no reinforcement structure is set up, the overall line will be affected when the holes are opened. Since the segment structure will be damaged to a certain extent when the holes are opened, the stability of the segment structure may be reduced, resulting in the safety of the line being affected. Improper operation may cause damage to the surrounding environment and even cause safety accidents, requiring later repairs or replacements, increasing maintenance costs. During the hole opening construction process, the integrity of the shield pipe itself is disturbed, and the soil above is disturbed, affecting the use of the road surface above. Therefore, we propose a branch pipe for accessing an existing shield pipe. Utility Model Content

[0003] The utility model aims to provide a built shield pipeline access branch pipe to solve the problems raised in the above background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a built shield pipeline access branch pipe, including construction land, sleeve valve pipes are symmetrically arranged inside the construction land, a foundation pit inspection well is opened at the center of the upper surface of the construction land, a steel grille is arranged on the lower surface of the foundation pit inspection well, a shield pipeline is arranged on the lower surface of the steel grille, a steel support is arranged on the inner side of the steel grille, a riding well pipe is arranged on the other side of the steel support, and the lower surface of the riding well pipe is connected to the upper surface of the shield pipeline.

[0005] Preferably, the inner wall of the foundation pit inspection well is provided with a positioning structure, and the positioning structure includes an inner plate, and the two sides of the inner plate are fixedly connected to the inner wall of the foundation pit inspection well, and the upper surface of the inner plate is buckled with a concave plate, and the inner cavity of the concave plate is provided with bolts, and the concave plate is threadedly connected to the inner plate through the bolts, and the lower surface of the concave plate is in contact with the upper surface of the riding well pipe.

[0006] Preferably, the number of the bolts is three, and they are vertically arranged in sequence.

[0007] Compared with the prior art, the beneficial effects of the utility model are as follows: grouting reinforcement is carried out through sleeve valve pipes in the construction land, and the injection slurry adopts cement-water-glass double slurry or cement slurry to ensure the grouting effect and the unconfined compressive strength of the slurry grouting body. At the same time, the steel grilles are reinforced by steel supports to play the role of the connection interface between the riding well pipe and the shield pipe. Through this type of construction measures, the problem of sewage and rainwater from the newly built pipes merging into the existing shield pipeline can be solved; the overall re-construction of this access point can be avoided, which consumes a lot of manpower and material resources; the construction period of this access point can be shortened; the main line can be operated with water appropriately according to the situation, and there is no need for strict dry operation; the damage to the surrounding road surface can be reduced, and the risk of settlement of the surrounding road surface can be avoided. This measure can achieve multiple goals at one stroke, reduce construction costs, and create higher economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 It is a structural schematic diagram of the utility model;

[0009] Figure 2 for Figure 1 A partial enlarged view of the positioning structure;

[0010] Figure 3 for Figure 1 A structural stereogram of the central positioning structure;

[0011] In the figure: 1. Construction land; 2. Foundation pit inspection well; 3. Steel grille; 4. Steel support; 5. Riding well pipe; 6. Shield pipe; 7. Sleeve valve pipe; 8. Positioning structure; 81. Inner plate; 82. Concave plate; 83. Bolts. DETAILED DESCRIPTION

[0012] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0013] See also Figure 1-3 The utility model provides a built shield pipeline access branch pipe, including construction land 1, sleeve valve pipes 7 are symmetrically arranged inside the construction land 1, a foundation pit inspection well 2 is opened at the center of the upper surface of the construction land 1, a steel grille 3 is arranged on the lower surface of the foundation pit inspection well 2, a shield pipeline 6 is arranged on the lower surface of the steel grille 3, a steel support 4 is arranged on the inner side of the steel grille 3, and a riding well pipeline 5 is arranged on the other side of the steel support 4, and the lower surface of the riding well pipeline 5 is connected to the upper surface of the shield pipeline 6.

[0014] Before trenching construction, first determine the location of the construction land 1, first perform grouting reinforcement above the shield pipe 6 and around the pipelines that need to be protected according to actual conditions, perform grouting reinforcement through the sleeve valve pipe 7 in the construction land 1, and use cement-water-glass double slurry or cement slurry for injection to ensure the grouting effect and the unconfined compressive strength of the slurry grouting body. When the construction land 1 meets the strength requirements, excavate the foundation pit inspection well 2 by hanging the well wall invertedly. In the foundation pit inspection well 2, according to the position of the shield pipe 6 segments, the shield pipe 6 is composed of multiple shield segments, and the entire segment is dismantled. At the same time, steel gratings 3 are constructed in the same plane of the shield segments, and the steel gratings 3 are reinforced by steel supports 4, which serve as the connection interface between the riding well pipe 5 and the shield pipe 6. Water operations can be carried out appropriately according to the situation, and strict dry operations are not required. This can reduce damage to the surrounding road surface and avoid the risk of settlement of the surrounding road surface.

[0015] The inner wall of the foundation pit inspection well 2 is provided with a positioning structure 8, and the positioning structure 8 includes an inner plate 81, and both sides of the inner plate 81 are fixedly connected to the inner wall of the foundation pit inspection well 2. A concave plate 82 is buckled on the upper surface of the inner plate 81, and a bolt 83 is provided in the inner cavity of the concave plate 82. The concave plate 82 is threadedly connected to the inner plate 81 through the bolt 83, and the lower surface of the concave plate 82 is in contact with the upper surface of the riding well pipe 5. After the riding well pipe 5 is placed, the inner plate 81 is placed inside the foundation pit inspection well 2, and both sides are screwed and fixedly connected to fix the inner plate 81, and then the concave plate 82 is buckled with the inner plate 81, and the protruding parts on both sides of the concave plate 82 contact the inner plate 81 to keep the concave plate 82 stable. At the same time, the top is fixed by bolts 83, and the bottom of the concave plate 82 supports the top of the riding well pipe 5, so that the riding well pipe 5 is placed in the foundation pit inspection well 2 More stable and firm, and at the same time, it has a disassembly function, which is convenient for subsequent processing links.

[0016] The number of the bolts 83 is three, and they are vertically arranged in sequence.

[0017] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shield pipeline connected to a branch pipe, characterized in that: The invention comprises a construction land (1), wherein sleeve valve pipes (7) are symmetrically arranged inside the construction land (1), a foundation pit inspection well (2) is opened at the center of the upper surface of the construction land (1), a steel grille (3) is arranged on the lower surface of the foundation pit inspection well (2), a shield pipe (6) is arranged on the lower surface of the steel grille (3), a steel support (4) is arranged on the inner side of the steel grille (3), a riding well pipe (5) is arranged on the other side of the steel support (4), and the lower surface of the riding well pipe (5) is connected to the upper surface of the shield pipe (6).

2. The existing shield pipeline access branch pipe according to claim 1, characterized in that: The inner wall of the foundation pit inspection well (2) is provided with a positioning structure (8), and the positioning structure (8) includes an inner plate (81), and the two sides of the inner plate (81) are fixedly connected to the inner wall of the foundation pit inspection well (2), and the upper surface of the inner plate (81) is buckled with a concave plate (82), and the inner cavity of the concave plate (82) is provided with bolts (83), and the concave plate (82) is threadedly connected to the inner plate (81) through the bolts (83), and the lower surface of the concave plate (82) is in contact with the upper surface of the riding well pipe (5).

3. The existing shield pipeline access branch pipe according to claim 2, characterized in that: The number of the bolts (83) is three, and they are vertically arranged in sequence.

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