Pressure pipe jacking well structure

Abstract

The utility model relates to a pipe-jacking well structure of a pressure pipe. The pipe-jacking well structure comprises a pipe-jacking well and an exhaust valve well arranged at the top of the pipe-jacking well, a pipe-jacking steel pipe, a buried steel pipe, a vertical steel pipe, a bottom tee joint and a top tee joint are arranged in the pipe-jacking well, the pipe-jacking steel pipe is horizontally arranged at the bottom of one side of the pipe-jacking well, and the buried steel pipe is horizontally arranged at the top of one side of the pipe-jacking well; the bottom tee joint is connected with the bottom end of the vertical steel pipe and the top pipe steel pipe; the top tee joint is connected with the top of the vertical steel pipe and the buried steel pipe; the top of the top tee joint extends into the exhaust valve well, the top of the top tee joint is detachably connected with a top blind plate, and an exhaust gate valve is arranged at the top of the blind plate; according to the pressure pipe jacking well structure, backfilling can be carried out on the interior of a jacking well, precious urban underground space is saved, meanwhile, the top blind plate can be opened, a user can enter a pipeline for overhauling, and overhauling is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of pipe jacking wells, in particular to a pressure pipe pipe jacking well structure. Background Art

[0002] In urban construction, pressure pipes are often used in the transportation of raw water and clean water, as well as sewage discharge. When excavating restricted areas or crossing special obstacles, pipe jacking is a common construction technology. In order to meet the requirements of pipe jacking technology, pipe jacking wells are generally set up at the starting point and end of the pipe jacking.

[0003] There are currently two conventional treatment methods for the pipe jacking wells at both ends. The first method is to backfill directly after the pipe jacking is completed. This method generally requires an additional exhaust valve to be installed in the straight section outside the pipe jacking well, and the pipe jacking pipeline cannot be inspected and repaired at a later time. The other treatment method is to retain and utilize the pipe jacking well and use it directly as a maintenance well. In this method, the pipe jacking well needs to be designed as a permanent well, which has a high construction cost. In addition, due to the large space of the pipe jacking well, it occupies valuable urban underground space, which is not conducive to the long-term underground space development and pipeline laying. Utility Model Content

[0004] Based on the above description, the utility model provides a pressure pipe jacking shaft structure, which can backfill the jacking shaft to save valuable urban underground space, and also can open the top blind plate to enter the pipeline for maintenance, which is convenient for maintenance.

[0005] The utility model provides a technical solution to the above technical problems as follows: a pressure pipe jacking well structure, comprising a jacking well and an exhaust valve well arranged at the top of the jacking well;

[0006] The jacking well is provided with a jacking steel pipe, a buried steel pipe, a vertical steel pipe, a bottom tee and a top tee. The jacking steel pipe is horizontally arranged at the bottom of one side of the jacking well, and the buried steel pipe is horizontally arranged at the top of one side of the jacking well; the bottom tee connects the bottom end of the vertical steel pipe and the jacking steel pipe; the top tee connects the top of the vertical steel pipe and the buried steel pipe;

[0007] The top of the top tee extends into the exhaust valve well, and the top of the top tee is detachably connected with a top blind plate, and the top of the blind plate is provided with an exhaust valve.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, a cushion layer is provided on the top of the jacking pipe well, and the bottom of the exhaust valve well is connected to the cushion layer.

[0010] Furthermore, the exhaust valve well is a reinforced concrete well.

[0011] Furthermore, a water stop wing ring is provided at the connection between the top tee and the exhaust valve well.

[0012] Furthermore, the jacking pipe well is filled with coarse sand.

[0013] Furthermore, the bottom seal of the bottom tee is provided with a bottom blind plate.

[0014] Furthermore, a buttress is provided at the bottom of the jacking pipe shaft, and the buttress covers the bottom tee.

[0015] Furthermore, one side of the pier is connected to the inner wall of the jacking shaft away from the jacking steel pipe.

[0016] Furthermore, a flange is provided at the top of the top tee, and the top blind plate is bolted to the flange.

[0017] Furthermore, an exhaust gate valve is provided at the bottom of the exhaust valve, and the exhaust gate valve is connected to the top blind plate through an exhaust short pipe.

[0018] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0019] 1. The utility model provides a pressure pipe jacking well structure, which can backfill the jacking well to save valuable urban underground space. At the same time, the top blind plate can be opened to enter the pipeline for maintenance, which is convenient for maintenance;

[0020] 2. By setting the bottom tee, it can be used as a sludge well to ensure the operation of the pipeline, and it can also be used as a sump during maintenance to facilitate the emptying of the pipeline;

[0021] 3. After setting up the exhaust valve well, the jacking well can be designed and constructed as a temporary facility while ensuring its functionality, greatly reducing project investment. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic structural diagram of a pressure pipe jacking well structure provided by an embodiment of the utility model;

[0023] Figure 2 for Figure 1 A structural diagram from another perspective;

[0024] Figure 3 This is a schematic diagram of the structure of the exhaust valve well in the embodiment of the utility model;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Pipe jacking shaft; 11. Buttress; 12. Coarse sand; 2. Exhaust valve shaft; 21. Water stop wing ring; 3. Pipe jacking steel pipe; 4. Buried steel pipe; 5. Vertical steel pipe; 6. Bottom tee; 7. Bottom blind plate; 8. Top tee; 81. Flange; 9. Top blind plate; 91. Exhaust short pipe; 92. Exhaust gate valve; 93. Exhaust valve. DETAILED DESCRIPTION

[0027] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0029] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0030] A pressure pipe jacking well 1 structure includes a jacking well 1 and an exhaust valve well 2 arranged at the top of the jacking well 1. The jacking steel pipe 3, the buried steel pipe 4, the vertical steel pipe 5, the bottom tee 6 and the top tee 8 are arranged in the jacking well 1. The jacking steel pipe 3 is horizontally arranged at the bottom of one side of the jacking well 1, and the buried steel pipe 4 is horizontally arranged at the top of one side of the jacking well 1. The bottom tee 6 connects the bottom end of the vertical steel pipe 5 and the jacking steel pipe 3, and the bottom of the bottom tee 6 is sealed with a bottom blind plate 7. The top tee 8 connects the top of the vertical steel pipe 5 and the buried steel pipe 4. The top of the top tee 8 extends into the exhaust valve well 2, and the top of the top tee 8 is detachably connected to the top blind plate 9, and the top of the blind plate is provided with an exhaust valve 93. In this embodiment, an exhaust gate valve 92 is provided at the bottom of the exhaust valve 93, and the exhaust gate valve 92 is connected to the top blind plate 9 through an exhaust short pipe 91.

[0031] In this embodiment, the jacking well 1 is filled with coarse sand 12, and precious urban underground space is saved by backfilling the jacking well 1. In addition, by setting the bottom tee 6, it can be used as a sludge well to ensure the operation of the pipeline, and can also be used as a sump during maintenance to facilitate the pipeline emptying operation.

[0032] A pier 11 is also provided at the bottom of the jacking shaft 1. The pier 11 is made of plain concrete and covers the bottom tee 6. One side of the pier 11 is connected to the inner wall of the jacking shaft 1 away from the jacking steel pipe 3, so that the pressure on the bottom tee 6 is transmitted to the inner wall of the jacking shaft 1 along the direction of water flow, thereby stably supporting the bottom tee 6.

[0033] In this embodiment, a steel flange 81 is provided at the top of the top tee 8, and the top blind plate 9 is bolted to the flange 81. By opening the top blind plate 9, the pipeline can be entered for maintenance, which is convenient for maintenance.

[0034] In addition, a cushion layer is arranged on the top of the pipe jacking shaft 1. In this embodiment, the cushion layer is a plain concrete cushion layer, the exhaust valve shaft 2 is a reinforced concrete shaft, and the bottom of the exhaust valve shaft 2 is connected to the cushion layer. After the exhaust valve shaft 2 is arranged, the pipe jacking shaft 1 can be designed and constructed as a temporary facility under the premise of ensuring the function, which greatly reduces the project investment.

[0035] A water-stop wing ring 21 is also provided at the connection between the top tee 8 and the exhaust valve well 2 to prevent rainwater from entering the top pipe well 1 and causing settlement.

[0036] The construction method of this embodiment is as follows:

[0037] (1) After the jacking is completed, the jacking steel pipe 3 is welded to the bottom tee 6, and the bottom blind plate 7 is welded to the bottom of the bottom tee 6 to ensure that the inner bottom of the bottom blind plate 7 is 50 cm lower than the inner bottom of the jacking steel pipe 3 to meet the needs of mud settling and drainage.

[0038] (2) Implement the buttress 11. The buttress 11 should meet the relevant structural force requirements. The buttress 11 in this embodiment wraps the bottom tee 6 to the inner wall of the jacking well 1 along the water flow direction to meet the force transmission requirements.

[0039] (3) Connect the vertical steel pipe 5 to the bottom tee 6, connect the top tee 8 to the vertical steel pipe 5, and backfill the coarse sand 12 in the jacking well 1 to the chest area of ​​the jacking well 1 and tamp it into place.

[0040] (4) Connect the top tee 8 to the buried steel pipe 4, continue to backfill the coarse sand 12 until it is flush with the top of the buried steel pipe 4, and implement the cushion layer with a thickness of 100 mm.

[0041] (5) Weld the water stop wing ring 21 and the flange 81 to the top tee 8, connect the top blind plate 9 and the flange 81, and weld the exhaust short pipe 91 for installing the exhaust gate valve 92 on the top of the top blind plate 9.

[0042] (6) Implement the exhaust valve well 2. The bottom of the exhaust valve well 2 falls on the cushion layer. The clearance between the bottom of the well and the flange 81 is not less than 300mm. The exhaust valve well 2 should not be less than 150mm above the designed ground.

[0043] (7) Install the exhaust gate valve 92 and the exhaust valve 93. After installation, the height of the exhaust valve 93 from the top plate of the exhaust valve well 2 should not be less than 150 mm.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A pressure pipe jacking well structure, characterized in that: It includes a pipe jacking well and an exhaust valve well arranged on the top of the pipe jacking well; The jacking well is provided with a jacking steel pipe, a buried steel pipe, a vertical steel pipe, a bottom tee and a top tee. The jacking steel pipe is horizontally arranged at the bottom of one side of the jacking well, and the buried steel pipe is horizontally arranged at the top of one side of the jacking well; the bottom tee connects the bottom end of the vertical steel pipe and the jacking steel pipe; the top tee connects the top of the vertical steel pipe and the buried steel pipe; The top of the top tee extends into the exhaust valve well, and the top of the top tee is detachably connected with a top blind plate, and the top of the blind plate is provided with an exhaust valve.

2. A pressure pipe jacking well structure according to claim 1, characterized in that: A cushion layer is arranged on the top of the jacking pipe well, and the bottom of the exhaust valve well is connected to the cushion layer.

3. A pressure pipe jacking well structure according to claim 2, characterized in that: The exhaust valve well is a reinforced concrete well.

4. A pressure pipe jacking well structure according to claim 3, characterized in that: A water stop wing ring is provided at the connection between the top tee and the exhaust valve well.

5. The pressure pipe jacking well structure according to claim 1, characterized in that: The jacking pipe well is filled with coarse sand.

6. The pressure pipe jacking well structure according to claim 1, characterized in that: The bottom seal of the bottom tee is provided with a bottom blind plate.

7. The pressure pipe jacking well structure according to claim 1, characterized in that: A buttress is arranged at the bottom of the jacking pipe well, and the buttress covers the bottom tee.

8. A pressure pipe jacking well structure according to claim 7, characterized in that: One side of the pier is connected to the inner wall of the jacking well away from the jacking steel pipe.

9. The pressure pipe jacking well structure according to claim 1, characterized in that: A flange is provided at the top of the top tee, and the top blind plate is bolted to the flange.

10. The pressure pipe jacking well structure according to claim 1, characterized in that: An exhaust gate valve is arranged at the bottom of the exhaust valve, and the exhaust gate valve is connected to the top blind plate through an exhaust short pipe.

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