Sealing and water stopping structure for high-water-pressure jacking pipe entering and exiting hole
By using high-pressure top pipe inlet and outlet holes with components such as concrete seats, steel rings and airbags to seal the water stop structure during the top pipe construction, the water leakage problem of inlet and outlet holes is solved, and effective water stop effect is achieved, ensuring construction safety and efficiency.
Patent Information
- Application Number
- CN202422400205.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-30
- Publication Date
- 2025-07-29
- Estimated Expiration
- 2034-09-30
AI Technical Summary
During the construction of pipe top pipes, the pipes in and out of the holes are prone to sink, causing the gaps in the pipe interface to open, causing mud leakage, and even causing the pipe top to be damaged and soil collapse. The existing water stop treatment is not effective enough, affecting the construction progress and safety.
A high-pressure top pipe inlet and outlet hole sealed water stop structure is adopted, including a concrete seat, a pressurized steel ring, a rubber ring, an airbag and an airbag, by installing a rubber ring and an airbag in the work well, the rubber ring is extruded by airbag expansion, so as to achieve a close connection with the tool head shell and effective water stop.
It enhances the water and sand leakage capability of the hole, ensures construction safety, avoids soil collapse and building damage, and improves construction efficiency.
Smart Images
Figure CN223164544U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to a water stop structure, in particular to a high-water-pressure pipe jacking in-and-out hole sealing water stop structure. Background Technique
[0002] Pipe jacking is a non-excavation construction method for underground pipelines. Its characteristic is to change the open trenching laying of pipelines to trenchless tunneling. This is very important for urban areas with heavy traffic, dense population, numerous ground buildings, and complex underground structures and pipelines. Laying new underground pipelines such as gas, heat, electricity, water supply, and drainage, as well as underground passages, has become increasingly difficult and even impossible to implement using the previous open trenching method. In order to reduce the interference with traffic and the normal activities of citizens, reduce unnecessary demolitions, and reduce the impact on the city appearance and environmental hygiene, pipe jacking has become the best choice in municipal infrastructure projects.
[0003] The correctness of the in-and-out hole scheme of pipe jacking is crucial for the smooth progress of pipe jacking construction. When selecting the in-and-out hole scheme, reinforcement measures are generally considered to avoid collapse during the opening of the hole. Even if the soil body in the out-of-hole section is self-supporting clay, although it is safe during the process of opening the hole door, during the pipe jacking process, due to the relatively low strength of this section of soil body, and continuous friction between the pipe and the soil body during pipe jacking, the pipes in the in-and-out hole section are very likely to sink. Then, as the pipe jacking distance increases, the situation of pipe sinking will gradually deteriorate, and the opening amount of the pipe joint gap under the pipe in the sinking section increases, which will further cause mud leakage at the pipe joint and even damage the pipes. For the reinforcement of the deeply buried in-and-out hole section, high-pressure jet grouting piles are generally directly used for reinforcement.
[0004] When the pipe joints enter and exit the pipe jacking working well / receiving well, a certain gap must be left between the pipe joints and the hole. If the water stop treatment is not carried out for this gap, groundwater and sediment will flow into the working well from this gap, which will affect the normal operation in the working well, and seriously cause the collapse of the soil body above the hole, and even affect the safety of surrounding buildings and underground pipelines. Therefore, the hole water stop in pipe jacking engineering is very important. The water stop device is set at the hole to prevent soil and water loss when the pipe jacking machine enters the hole and cause a large amount of collapse. Content of the Utility Model
[0005] In view of the above situation, in order to overcome the defects of the prior art, the utility model provides a high-water-pressure pipe jacking in-and-out hole sealing water stop structure, which effectively solves the problems mentioned in the above background technique.
[0006] To achieve the above purpose, the utility model provides the following technical solution: The utility model includes a concrete seat formed by pouring, a pressing steel ring installed on the concrete seat through expansion bolts, and a convex ring arranged inside the pressing steel ring. It also includes an auxiliary mechanism and an installation hole. An auxiliary mechanism is press-fitted between the pressing steel ring and the concrete seat;
[0007] The auxiliary mechanism includes a rubber ring, a through hole, an extension ring, a protective ring, an airbag cavity, an airbag and an air inlet / outlet. A through hole is formed in the middle of the rubber ring. An extension ring is arranged at the bottom edge of the rubber ring. A protective ring is arranged on the outer side of the top of the rubber ring. An airbag cavity is arranged between the protective ring and the extension ring. An airbag is installed in the airbag cavity. An air inlet / outlet is arranged on one side of the airbag.
[0008] Preferably, an installation hole is formed in the pressing steel ring corresponding to the position of the expansion bolt.
[0009] Preferably, the extension ring is located between the pressing steel ring and the concrete seat.
[0010] Preferably, the air inlet / outlet penetrates through the convex ring and extends out.
[0011] Preferably, the expansion bolts and the installation holes are equal in number and are in one-to-one correspondence in position.
[0012] Preferably, the outer edge of the protective ring abuts against the convex ring.
[0013] Beneficial effects: The structure of the utility model is novel, ingeniously conceived and simple. The cast-in-place concrete seat in the working well can facilitate the installation of the pressing steel ring and play a role in strengthening the working well. When the pipe jacking exits the hole, when the tool head is pushed into the reserved hole, the airbag is inflated through the air inlet / outlet, and the inflated airbag extrudes the rubber ring, and the rubber ring will tightly hold the outer shell of the tool head, realizing a tight connection with the hole, effectively preventing water leakage, and enhancing the ability of the hole to prevent water and sand leakage. Description of the Drawings
[0014] The drawings are used to provide a further understanding of the utility model, and constitute a part of the specification. Together with the embodiments of the utility model, they are used to explain the utility model, and do not constitute a limitation to the utility model. In the drawings:
[0015] Figure 1 is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 is a sectional view of the rubber ring of the utility model;
[0017] Figure 3 is a top view of the rubber ring of the utility model;
[0018] Figure 4 is a top view of the pressing steel ring of the utility model;
[0019] Reference numerals in the drawings: 1, concrete seat; 2, pressing steel ring; 3, expansion bolt; 4, convex ring; 5, auxiliary mechanism; 6, rubber ring; 7, through hole; 8, extension ring; 9, protective ring; 10, airbag cavity; 11, airbag; 12, air inlet / outlet; 13, installation hole. Specific embodiments
[0020] The following will further elaborate on the specific embodiments of the present utility model in conjunction with the Figures 1-4 accompanying drawings.
[0021] Embodiment 1 is given by Figures 1-4 The present utility model provides a high - water - pressure pipe - jacking in - and - out - hole sealing and water - stopping structure, including a concrete seat 1 formed by casting, a pressing steel ring 2 installed on the concrete seat 1 through expansion bolts 3, and a convex ring 4 arranged inside the pressing steel ring 2. It also includes an auxiliary mechanism 5 and an installation hole 13. An auxiliary mechanism 5 is press - fitted between the pressing steel ring 2 and the concrete seat 1;
[0022] The auxiliary mechanism 5 includes a rubber ring 6, a through - hole 7, an extension ring 8, a protective ring 9, an air - bag cavity 10, an air - bag 11, and an air charging and discharging port 12. A through - hole 7 is opened in the middle of the rubber ring 6. An extension ring 8 is arranged at the bottom edge of the rubber ring 6. A protective ring 9 is arranged on the outer side of the top of the rubber ring 6. An air - bag cavity 10 is arranged between the protective ring 9 and the extension ring 8. An air - bag 11 is installed in the air - bag cavity 10. An air charging and discharging port 12 is arranged on one side of the air - bag 11.
[0023] Installation holes 13 are opened at the positions of the pressing steel ring 2 corresponding to the expansion bolts 3, facilitating the installation and fixation of the expansion bolts 3.
[0024] The extension ring 8 is located between the pressing steel ring 2 and the concrete seat 1, facilitating the fixation of the extension ring 8.
[0025] The air charging and discharging port 12 penetrates through the convex ring 4 and extends out, facilitating the installation and use of the air charging and discharging port 12.
[0026] The number of the expansion bolts 3 and the installation holes 13 is the same, and their positions correspond one by one, facilitating the combined installation and use.
[0027] The outer edge of the protective ring 9 abuts against the convex ring 4, facilitating the combined installation and use.
[0028] Working principle: When the present utility model is installed, the concrete seat 1 is cast in the working well. Then, the rubber ring 6 is placed inside the pressing steel ring 2, and the extension ring 8 at the bottom of the rubber ring 6 is located at the bottom of the pressing steel ring 2. Then, the pressing steel ring 2 is fixed on the concrete seat 1 through the expansion bolts 3. Then, the air - bag 11 is fixed inside the air - bag cavity 10, and the overall installation and fixation can be completed. When in use, when the pipe - jacking enters and exits the hole, when the tool head is pushed into the reserved hole, at this time, the air - bag 11 is inflated through the air charging and discharging port 12. The inflated air - bag 11 squeezes the rubber ring 6, and the rubber ring 6 will tightly hold the outer shell of the tool head, realizing a tight connection with the hole, effectively stopping water, enhancing the ability of the hole to prevent water leakage and sand leakage, and being beneficial for use.
[0029] Beneficial effects: The structure of the present utility model is novel, ingeniously conceived, and simple. The cast-in-place concrete seat 1 in the working well can not only facilitate the installation of the pressing steel ring 2 but also play a role in strengthening the working well. When the pipe jacking exits the hole, when the tool head is pushed into the reserved hole, the airbag 11 is inflated through the air charging and discharging port 12. The airbag 11 expands and squeezes the rubber ring 6, and the rubber ring 6 will tightly hold the outer shell of the tool head, realizing a tight connection with the hole, effectively preventing water leakage, and enhancing the ability of the hole to prevent water and sand leakage.
[0030] For those skilled in the art, all the electrical components in this case are connected to their adapted power supplies through wires, and appropriate controllers and encoders should be selected according to the actual situation to meet the control requirements. For the specific connection and control sequence, reference should be made to the sequence of the electrical components working successively in the following working principle to complete the electrical connection. The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and no further description of the electrical control will be made.
[0031] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A sealing and water-stopping structure for the entry and exit of high-water-pressure pipe jacking, comprising a cast concrete seat (1), a pressing steel ring (2) installed on the concrete seat (1) through expansion bolts (3), and a convex ring (4) arranged inside the pressing steel ring (2), characterized in that: It further includes an auxiliary mechanism (5) and a mounting hole (13), and an auxiliary mechanism (5) is press-fitted between the steel pressing ring (2) and the concrete base (1); The auxiliary mechanism (5) includes a rubber ring (6), a through hole (7), an extension ring (8), a protective ring (9), an airbag cavity (10), an airbag (11) and an air charging / discharging port (12). A through hole (7) is formed in the middle of the rubber ring (6). An extension ring (8) is arranged at the bottom edge of the rubber ring (6). A protective ring (9) is arranged on the outer side of the top of the rubber ring (6). An airbag cavity (10) is arranged between the protective ring (9) and the extension ring (8). An airbag (11) is installed in the airbag cavity (10). An air charging / discharging port (12) is arranged on one side of the airbag (11).
2. The high-water-pressure pipe jacking in and out of the hole sealing and water stop structure according to claim 1, characterized in that: A mounting hole (13) is formed in the steel pressing ring (2) corresponding to the position of the expansion bolt (3).
3. The water-stop structure for sealing the entry and exit of a high-water-pressure pipe jacking according to claim 1, characterized in that: The extension ring (8) is located between the steel pressing ring (2) and the concrete base (1).
4. A high - water - pressure pipe - jacking in - and - out - hole sealing and water - stopping structure according to claim 1, characterized in that: The air charging / discharging port (12) penetrates through the convex ring (4) and extends out.
5. The high - water - pressure pipe - jacking in - and - out - hole sealing and water - stopping structure according to claim 2, characterized in that: The number of the expansion bolts (3) is the same as that of the mounting holes (13), and their positions correspond one by one.
6. The high - water - pressure pipe - jacking in - and - out - hole sealing and water - stopping structure according to claim 1, characterized in that: The outer edge of the protective ring (9) abuts against the convex ring (4).