Supporting device for surrounding pipelines in urban tunnel underground excavation construction

Abstract

The utility model discloses a supporting device for surrounding pipelines in urban tunnel underground excavation construction, which belongs to the technical field of construction pipeline protection and comprises a vertically arranged hydraulic telescopic rod, a top pipe support mounted at the upper end of the hydraulic telescopic rod and a base mounted at the lower end of the hydraulic telescopic rod. Oil stop valves are arranged on the two sides of the top of the hydraulic telescopic rod and used for adjusting the telescopic length of the hydraulic telescopic rod. And when supporting is needed, the oil stop valve is opened, and the oil stop valve can be pulled out to the length needed by supporting. The top pipe support is attached to a to-be-supported pipeline, the lower base is arranged on a lining, and the supporting effect on the pipeline is achieved. The utility model has the advantages of convenience in operation, simple principle and adjustable height at any time, and can be widely applied to underground construction of cities with more pipelines.

Description

Technical Field

[0001] This utility model belongs to the field of construction pipeline protection technology, specifically relating to a support device for pipelines around urban tunnel excavation. Background Technology

[0002] With the accelerating pace of global urbanization, the development and utilization of urban underground space is increasingly becoming an important way to enhance urban functions and alleviate pressure on surface space. Urban underground construction not only involves complex geotechnical engineering but is also closely related to the safe and stable operation of urban infrastructure, especially the intricate municipal pipeline system. These pipelines include water supply, drainage, gas, electricity, and communications. However, with the continuous excavation and utilization of underground space, such as the construction of subways, tunnels, and underground utility tunnels, how to effectively protect the municipal pipelines above and around the construction site while ensuring construction progress and quality, and preventing pipeline damage, leakage, or even collapse accidents caused by construction, has become a critical issue that urgently needs to be addressed in the field of urban underground construction.

[0003] Current solutions follow the principle of "underground first, above-ground second" for new pipelines, while the protection of existing pipelines mainly involves demolition and reinforcement. A certain thickness of undisturbed soil is left beneath the pipeline as a natural support layer to enhance its stability; protective steel plates are placed on both sides of the pipeline, closely attached to the undisturbed soil, to resist lateral pressure caused by construction; and the top of the pipeline is sealed with concrete to form a protective cover, further reinforcing the pipeline structure. These technologies mitigate the impact of construction on the pipeline to some extent, ensuring construction safety and the normal operation of the pipeline. Although traditional reinforcement methods have been applied to some extent in urban underground construction, they still have many shortcomings and limitations. First, the steps of leaving undisturbed soil, placing protective steel plates, and sealing with concrete are not only complex to construct, but also have high material and labor costs, increasing the overall investment of the project. Second, the applicability of these methods is limited in shallow-buried tunnel construction scenarios. Because shallow-buried tunnels are usually located in busy urban areas with limited surface space, high construction difficulty, and high sensitivity to the surrounding environment, traditional reinforcement methods may be difficult to implement or ineffective. In addition, traditional methods often lack flexibility and adjustability, making it difficult to adapt to changes in pipe materials, diameters, and burial depths.

[0004] Therefore, developing a pipeline protection device for shallow buried tunnels in cities that is both energy-efficient and reliable, and can flexibly adapt to various construction conditions and the characteristics of urban pipelines, has become a technical challenge that urgently needs to be overcome in the field of urban underground construction. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the purpose of this utility model is to provide a support device for pipelines around urban tunnel excavation, so as to solve the technical problem of lack of bottom soil support for pipelines caused by the excavation of soil below the pipeline.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] This utility model discloses a support device for pipelines around urban tunnel excavation, comprising: a vertically arranged hydraulic telescopic rod, a top pipe support installed at the upper end of the hydraulic telescopic rod, and a base installed at the lower end of the hydraulic telescopic rod.

[0008] The hydraulic telescopic rod is equipped with oil stop valves on both sides of the top. The oil stop valves are used to adjust the extension and retraction length of the hydraulic telescopic rod.

[0009] Preferably, the hydraulic telescopic rod has a double-layer cylindrical structure, with the inner layer being the main chamber and the outer layer being the side chamber, and hydraulic oil is transferred between the main chamber and the side chamber.

[0010] More preferably, the main chamber and the side chamber are connected by a connecting hole, and the oil stop valve is used to control the opening and closing of the connecting hole; a sealing limiter is provided between the main chamber and the side chamber.

[0011] More preferably, the hydraulic telescopic rod includes a telescopic piston and a stationary piston, and the cavity between the telescopic piston and the stationary piston is used to hold hydraulic oil, which is transferred between the side chamber and the cavity through a connecting hole.

[0012] Preferably, the top pipe support is made of rigid polyurethane adhesive; the cross-section of the top pipe support is arched, and the pipe to be supported is placed above the top pipe support and in direct contact with the top pipe support.

[0013] Preferably, the top tube support is connected to the upper end of the hydraulic telescopic rod by fasteners.

[0014] Preferably, a connecting spring is installed between the top tube support and the hydraulic telescopic rod.

[0015] Preferably, the base is placed on the tunnel lining and connected to the lower end of the hydraulic telescopic rod by fasteners.

[0016] Preferably, the base is made of oak wood, and a rubber pad layer is spliced ​​under the base.

[0017] Preferably, the oil stop valve includes a valve and a sealing plug, which are connected by bolts.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This utility model discloses a support device for pipelines surrounding urban tunnel excavation. It utilizes a hydraulic telescopic rod for telescopic movement, adapting to support needs at different elevations, making the support device more flexible and practical. The hydraulic system design allows for rapid adjustment of the support height on-site, improving construction efficiency and adaptability. The top pipe support provides both rigid support for the pipeline and allows for a certain amount of strain space, making the support system more rational and complete. It helps absorb and disperse stress during construction, protecting the pipeline from damage. The hydraulic system can evenly distribute the force received at any point in contact with the liquid, maximizing the use of material strength and improving the safety and reliability of the support device. The base provides anti-slip and cushioning effects, protecting the tunnel lining from rigid damage. The device is reusable; with gradual backfilling, only a few units are needed to complete the entire support task, reducing material and energy consumption. The device is easy to operate, simple in principle, and easy to install and disassemble, reducing the complexity and time cost of construction. The device has a compact design, occupies a small area, and will not significantly affect construction progress, making it particularly suitable for urban underground construction environments with limited space. This support device is installed between the bottom of the pipeline and the lining, distributed longitudinally along the tunnel. Once installed, the support device provides hydraulic support for the pipeline. Compared to existing underground pipeline protection methods, it is easier to operate, adaptable to different elevations, energy-efficient and environmentally friendly, requires less space, is reusable, and reduces pipeline maintenance costs. Furthermore, it provides strain space while achieving rigid support, making the support device more rational and reliable.

[0020] Furthermore, the hydraulic telescopic rod has a double-layered cylindrical structure, with the inner layer being the main chamber and the outer layer being the side chambers, allowing hydraulic oil to be transferred between the main chamber and the side chambers. This double-layered cylindrical structure provides the hydraulic telescopic rod with better stability and load-bearing capacity. The transfer of hydraulic oil between the main chamber and the side chambers enables the telescopic rod to extend and retract, allowing for flexible adjustment of the extension length to adapt to different support needs and improving the adaptability and practicality of the device.

[0021] Furthermore, the main chamber and side chamber are connected via a connecting hole, and a check valve controls the opening and closing of the connecting hole; a sealing limiter is installed between the main chamber and side chamber. The design of the connecting hole allows hydraulic oil to flow freely between the main chamber and side chamber, while the control of the check valve enables precise control of the hydraulic oil flow, thereby controlling the extension and retraction of the telescopic rod. The sealing limiter ensures the sealing of the hydraulic oil during the transfer process, preventing hydraulic oil leakage, while also limiting the extension and retraction range of the telescopic rod, improving the safety and reliability of the device.

[0022] Furthermore, the hydraulic telescopic rod includes a telescopic piston and a stationary piston. A cavity between the telescopic and stationary pistons holds hydraulic oil, which transfers between the side chamber and the cavity through a connecting hole. The design of the telescopic and stationary pistons gives the hydraulic telescopic rod better telescopic performance and stability. The cavity holds the hydraulic oil, ensuring an ample supply. The transfer of hydraulic oil between the side chamber and the cavity through the connecting hole enables the telescopic rod's telescopic function, making the telescopic process smoother and more reliable.

[0023] Furthermore, the top pipe support is made of rigid polyurethane adhesive; the cross-section of the top pipe support is arched, and the pipe to be supported is placed above the top pipe support and in direct contact with it. Rigid polyurethane adhesive has advantages such as light weight, hardness, and good toughness, providing sufficient support for the pipe while absorbing and dispersing stress, protecting the pipe from damage. The arched cross-section design allows the top pipe support to better constrain the horizontal displacement of the pipe, improving the stability and reliability of the support device.

[0024] Furthermore, the top pipe support is connected to the upper end of the hydraulic telescopic rod via fasteners. This fastener connection makes the connection between the top pipe support and the hydraulic telescopic rod more secure and reliable, preventing the top pipe support from falling off or loosening during support operations, and improving the safety and stability of the device.

[0025] Furthermore, a connecting spring is installed between the top pipe support and the hydraulic telescopic rod. The design of the connecting spring allows the top pipe support to better conform to the pipe surface. Even if there are some unevenness or deformation on the pipe surface, the connecting spring can ensure a tight contact between the top pipe support and the pipe, thus improving the support effect.

[0026] Furthermore, the base is placed on the tunnel lining and connected to the hydraulic telescopic rod via fasteners, making the entire support device more stable and reliable. This prevents the support device from moving or tilting during the support process, improving the safety and stability of the device.

[0027] Furthermore, the base is made of oak planks, with a rubber pad layer attached underneath. Oak planks are lightweight and strong, making the base both lightweight and sturdy. The rubber pad layer provides anti-slip and cushioning properties, protecting the tunnel lining from rigid damage while reducing equipment maintenance costs.

[0028] Furthermore, the check valve comprises a valve and a sealing plug, which are connected by bolts. The design of the valve and sealing plug provides the check valve with better sealing performance and controllability. The bolted connection makes the connection between the valve and the sealing plug more robust and reliable, preventing hydraulic oil leakage or check valve failure, and improving the safety and reliability of the device. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural diagram of the on-site layout of a support device for pipelines surrounding urban tunnel excavation, as disclosed in this utility model.

[0030] Figure 2 This is a two-dimensional structural diagram of the support device for pipelines around urban tunnel excavation disclosed in this utility model.

[0031] Figure 3 This is a two-dimensional schematic diagram of the connection hole of the support device for pipelines around urban tunnel excavation disclosed in this utility model.

[0032] Figure 4 This is a schematic diagram of the base of a support device for pipelines surrounding urban tunnel excavation, as disclosed in this utility model.

[0033] The components include: 1. Pipe to be supported; 2. Hydraulic telescopic rod; 3. Top pipe support; 4. Base; 5. Lining; 6. Oil stop valve; 7. Hydraulic oil; 8. Sealing limiter; 9. Telescopic piston; 10. Stationary piston; 11. Connecting spring; 12. Valve; 13. Bolt; 14. Sealing plug; 15. Side chamber; 16. Main chamber; 17. Connecting hole; 18. Oak base; 19. Rubber pad. Detailed Implementation

[0034] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0035] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0036] The present invention will now be described in further detail with reference to the accompanying drawings:

[0037] Figure 1 This is a three-dimensional structural diagram of the on-site layout of a support device for pipelines surrounding urban tunnel excavation, as disclosed in this utility model. Figure 2 This is a schematic diagram of the overall two-dimensional structure of the support device for pipelines around urban tunnel excavation disclosed in this utility model. Figure 3 This is a two-dimensional schematic diagram of the connection hole of the support device for pipelines around urban tunnel excavation disclosed in this utility model. Figure 4 This is a schematic diagram of the base of a support device for pipelines surrounding urban tunnel excavation, disclosed in this utility model. As shown in the diagram, the pipeline to be supported (1) is the object requiring support during construction, typically a drainage or sewage pipe. The hydraulic telescopic rod (2) has oil-stop valves (6) on both sides at the top to control its extension length. The oil-stop valves (6) include a valve (12) and a sealing plug (14), connected by bolts (13). The top pipe support (3) has an arched cross-section and a certain thickness, responsible for supporting the pipeline and constraining its horizontal displacement. The base (4) is a square oak base (18) with a certain thickness and a rubber pad (19) at the bottom. During on-site installation, the base (4) is placed on the lining (5), the oil-stop valves (6) on both sides are opened, the hydraulic telescopic rod (2) is pushed to the required support length, and the oil-stop valves (6) are closed. At this point, the system is locked under pressure. The top pipe support (3) is pressed down to fit against the pipe wall and then released. The connecting spring (11) ensures the top pipe support (3) fits tightly against the pipe wall, thus completing the installation. The installed support device provides vertical support and horizontal constraint for pipelines above the tunnel. The extension and retraction of the hydraulic telescopic rod 2 is achieved by the transfer of hydraulic oil 7 in the main chamber 16 and the side chamber 15. A sealing limiter 8 is provided between the main chamber 16 and the side chamber 15. Initially, most of the hydraulic oil 7 is located in the side chamber 15. Turning the valve 12 can open the sealing plug 14, pull down the telescopic piston 9, and keep the stationary piston 10 stationary. During this process, the hydraulic oil 7 located in the side chamber 15 is drawn into the main chamber 16 through the connecting hole 17. After the length is sufficient, turning the valve 12 in the opposite direction will close the connecting hole 17. At this time, the system is locked and cannot be extended or retracted.

[0038] Example 1

[0039] A support device for underground pipelines surrounding urban tunnel excavation, comprising:

[0040] The hydraulic telescopic rod 2 is set vertically, the top tube support 3 is installed at the upper end of the hydraulic telescopic rod 2, and the base 4 is installed at the lower end of the hydraulic telescopic rod 2. Oil stop valves 6 are provided on both sides of the top of the hydraulic telescopic rod 2. The oil stop valves 6 are used to adjust the telescopic length of the hydraulic telescopic rod 2.

[0041] The hydraulic telescopic rod 2, as the core component of the support device, has a strong telescopic capacity, enabling flexible adjustment of the support height according to the progress of tunnel excavation and the actual location of underground pipelines. This not only improves the adaptability of the support device but also ensures safety and stability during construction.

[0042] The top pipe support 3 is installed on the upper end of the hydraulic telescopic rod 2, directly supporting and securing the underground pipeline. Its design takes into account the pipeline's load-bearing and stability requirements, effectively distributing pressure on the pipeline and preventing displacement or damage due to construction activities. Furthermore, the material and shape of the top pipe support 3 can be customized according to the actual pipeline characteristics to provide better support.

[0043] The base 4 is installed at the lower end of the hydraulic telescopic rod 2, providing stable support for the entire support device. Its design takes into account the load-bearing capacity of the tunnel lining 5 and the complexity of the construction environment, ensuring the stability of the support device during tunnel excavation. The material and structure of the base 4 can be adjusted according to actual construction needs to provide better support and anti-slip performance.

[0044] Oil check valves 6 are located on both sides of the top of the hydraulic telescopic rod 2, used to precisely adjust the extension and retraction length of the hydraulic telescopic rod 2. By controlling the flow of hydraulic oil 7, oil check valves 6 enable the rapid and stable extension and retraction of the hydraulic telescopic rod 2, improving the flexibility and controllability of the support device. At the same time, the design of oil check valves 6 takes into account sealing and durability requirements, ensuring that the hydraulic telescopic rod 2 maintains good performance during long-term use.

[0045] This support device for underground pipelines surrounding urban tunnel excavation effectively supports these pipelines through the coordinated action of components such as the hydraulic telescopic rod 2, top pipe support 3, base 4, and oil stop valve 6. This ensures the safety, stability, and adaptability of the support device, providing strong support for urban tunnel excavation.

[0046] Example 2

[0047] A support device for underground pipelines surrounding urban tunnel excavation, comprising:

[0048] The hydraulic telescopic rod 2 is vertically installed, with a top support 3 mounted on its upper end and a base 4 mounted on its lower end. Oil stop valves 6 are installed on both sides of the top of the hydraulic telescopic rod 2. These oil stop valves 6 are used to adjust the extension length of the hydraulic telescopic rod 2. Each oil stop valve 6 includes a valve 12 and a sealing plug 14, which are connected by bolts 13 to ensure sealing and reliability, preventing hydraulic oil leakage and ensuring the stability and safety of the support device during long-term use. The design of the oil stop valve 6 allows for precise adjustment of the extension length of the hydraulic telescopic rod 2.

[0049] The hydraulic telescopic rod 2 has a double-layer cylindrical structure, with an inner main chamber 16 and an outer side chamber 15. Hydraulic oil 7 is transferred between the main chamber 16 and the side chamber 15. This enhances the load-bearing capacity and stability of the hydraulic telescopic rod 2. The telescopic function is achieved through the transfer of hydraulic oil 7, allowing the support device to flexibly adjust its height according to construction needs, thus improving the adaptability and flexibility of the support. The main chamber 16 and the side chamber 15 are connected through a connecting hole 17, enabling the transfer of hydraulic oil 7. A stop valve 6 controls the opening and closing of the connecting hole 17; a sealing limiter 8 is installed between the main chamber 16 and the side chamber 15. The sealing limiter 8 ensures the sealing of the hydraulic oil 7 during the transfer process and limits the telescopic range of the hydraulic telescopic rod 2, preventing excessive extension or contraction that could damage the device or pose a construction safety hazard.

[0050] The hydraulic telescopic rod 2 includes a telescopic piston 9 and a stationary piston 10. The cavity between the telescopic piston 9 and the stationary piston 10 is used to hold hydraulic oil 7. The hydraulic oil 7 is transferred between the side chamber 15 and the cavity through the connecting hole 17, making the telescopic process smoother and more reliable.

[0051] The top pipe support 3 is made of rigid polyurethane, which is both lightweight and sturdy, providing sufficient support for the pipeline. The top pipe support 3 has an arched cross-section, allowing it to better constrain the horizontal displacement of the pipeline. The pipeline 1 to be supported is placed above the top pipe support 3 and in direct contact with it. The top pipe support 3 is connected to the upper end of the hydraulic telescopic rod 2 via fasteners. A connecting spring 11 is installed between the top pipe support 3 and the hydraulic telescopic rod 2, allowing the top pipe support 3 to better conform to the pipeline surface and improve the support effect.

[0052] The base 4 is placed on the tunnel lining 5 and connected to the lower end of the hydraulic telescopic rod 2 by fasteners, making the entire support device more stable and reliable. The base 4 is made of oak wood, which has the advantages of being lightweight and high-strength. A rubber pad 19 is spliced ​​under the base 4. The splicing of the rubber pad 19 provides anti-slip and cushioning effects, protecting the tunnel lining 5 from rigid damage.

[0053] Example 3

[0054] A support device for underground pipelines surrounding urban tunnel excavation mainly comprises three parts: a top pipe support 3, a hydraulic telescopic rod 2, and a base 4. The hydraulic telescopic rod 2 is a double-layered cylindrical structure, with a main chamber 16 in the middle and a side chamber 15 in the outer chamber, both filled with hydraulic oil 7. The main chamber 16 and the side chamber 15 are connected by a connecting hole 17 to transfer the hydraulic oil 7. An external oil stop valve 6 controls the opening and closing of the connecting hole 17. Initially, the oil stop valve 6 is closed, and the device is in a retracted state. After opening the two oil stop valves 6, the stationary piston 10 in the main chamber 16 is pulled downwards. Due to atmospheric pressure, the hydraulic oil 7 in the side chamber 15 enters the main chamber 16 through the connecting hole 17. Once the required support length is reached, the two oil stop valves 6 are closed. At this point, the hydraulic telescopic rod 2 is locked by pressure and no longer extends, achieving the desired support effect after installation.

[0055] The top pipe support 3 is made of rigid polyurethane adhesive, which is lightweight, hard, and has good toughness. It not only provides support for the pipe but also provides some strain space, and its cost is more economical than that of traditional steel top pipe supports 3. The base 4 is made of oak board, which is strong enough while reducing the overall weight, making it easier to transport. The rubber pad layer 19 is spliced ​​under the base 4, which is not only non-slip but also has a cushioning effect, preventing rigid damage to the concrete lining 5 due to the hardness of the material, reducing equipment maintenance costs and improving its economic applicability.

[0056] The complex underground pipelines and tunnels with constantly changing elevations increase the difficulty of support. A retractable underground construction pipeline support device that can be adjusted in length as needed can effectively solve this problem. At the same time, this support device is lightweight, occupies a small area, and will not significantly affect the construction process.

[0057] This utility model discloses a support device for pipelines surrounding urban tunnel excavation, including a top pipe support 3, a hydraulic telescopic rod 2, an oil stop valve 6, and a base 4. Initially, it is in a retracted state for easy transport. When support is needed, the oil stop valve 6 is opened, allowing it to be extended to the required length. The top pipe support 3 is then attached to the pipeline 1 to be supported, and the lower base 4 is placed on the lining 5 to provide support for the pipeline. This utility model is easy to operate, simple in principle, and its height can be adjusted at any time, making it widely applicable to urban underground construction with numerous pipelines.

[0058] Example 4

[0059] A support device for underground pipelines surrounding urban tunnel excavation, comprising:

[0060] The hydraulic telescopic rod 2, as the core component of the support device, is vertically installed, with its upper end connected to the top pipe support 3 and its lower end connected to the base 4. The hydraulic telescopic rod 2 has a double-layered cylindrical structure, consisting of an inner main chamber 16 and an outer side chamber 15, connected by a connecting hole 17. Oil stop valves 6 are located on both sides of the top of the hydraulic telescopic rod 2, controlling the opening and closing of the connecting hole 17. By controlling the flow of hydraulic oil 7, the extension and locking of the hydraulic telescopic rod 2 are achieved, thus adapting to the support requirements at different elevations.

[0061] The top pipe support 3 is located at the top of the hydraulic telescopic rod 2 and directly contacts the pipe 1 to be supported. It is connected to the hydraulic telescopic rod 2 via a connecting spring 11 to ensure a tight fit. Made of rigid polyurethane adhesive, it provides support for the pipe and allows for some strain space while reducing costs.

[0062] The base 4 is located at the bottom of the hydraulic telescopic rod 2 and rests on the lining 5. It is connected to the hydraulic telescopic rod 2 by fasteners such as bolts 13, and a rubber pad 19 is provided at the bottom. It is made of oak wood to reduce weight and enhance anti-slip and cushioning effects, protecting the lining 5 from rigid damage.

[0063] Oil stop valves 6 are located on both sides of the hydraulic telescopic rod 2, controlling the opening and closing of the connection hole 17. They are connected to the main chamber 16 and side chamber 15 of the hydraulic telescopic rod 2. The flow of hydraulic oil 7 is controlled by a switch, enabling the extension and locking of the hydraulic telescopic rod. Hydraulic oil 7 fills the side chamber 15 of the hydraulic telescopic rod 2. It flows between the main chamber 16 and side chamber 15 through the connection hole 17. Serving as the medium for hydraulic transmission, it enables the telescopic rod's extension and retraction function.

[0064] The sealing limiter 8, telescopic piston 9, stationary piston 10, valve 12, sealing plug 14, and other components together constitute the complete structure of the hydraulic system, ensuring the stable operation and precise control of the hydraulic telescopic rod 2. The oak base 18 and rubber pad 19 are used to enhance the stability and anti-slip performance of the base 4.

[0065] This utility model's support device utilizes the telescopic function of the hydraulic telescopic rod 2, combined with the supporting role of the top pipe support 3 and the anti-slip buffering effect of the base 4, to effectively support pipelines surrounding urban tunnel excavation. The device is easy to operate, highly adaptable, height adjustable, energy-saving and environmentally friendly, occupies a small area, and is reusable, significantly reducing pipeline maintenance costs, improving the reliability and rationality of support, and enhancing construction safety and efficiency.

[0066] Example 5

[0067] A support device for underground pipelines surrounding urban tunnel excavation, comprising:

[0068] The hydraulic telescopic rod 2, as the core component of the support device, is vertically installed, with its upper end connected to the top pipe support 3 and its lower end connected to the base 4. The hydraulic telescopic rod 2 has a double-layered cylindrical structure, with the inner layer being the main chamber 16 and the outer layer being the side chamber 15, connected by a connecting hole 17. Oil check valves 6 are located on both sides of the top of the hydraulic telescopic rod 2 to control the opening and closing of the connecting hole 17. By controlling the opening and closing of the oil check valves 6, hydraulic oil 7 is transferred between the main chamber 16 and the side chamber 15, thereby adjusting the extension and retraction length of the hydraulic telescopic rod 2 to achieve the required support height.

[0069] The top pipe support 3 is located at the upper end of the hydraulic telescopic rod 2 and directly contacts the pipe 1 to be supported. It is connected to the upper end of the hydraulic telescopic rod 2 by bolts 13 or other fasteners. Made of rigid polyurethane adhesive, it provides support for the pipe and has a certain degree of toughness to provide strain space. Its arched cross-section design helps to restrain the horizontal displacement of the pipe.

[0070] The base 4 is located at the lower end of the hydraulic telescopic rod 2 and rests on the tunnel lining 5. It is connected to the lower end of the hydraulic telescopic rod 2 by bolts 13 or other fasteners. A rubber pad 19 is spliced ​​under the base 4. It is made of oak wood to reduce the overall weight while ensuring sufficient strength. The rubber pad 19 provides anti-slip and cushioning functions, protecting the tunnel lining 5 from rigid damage.

[0071] Oil stop valves 6 are located on both sides of the top of the hydraulic telescopic rod 2. They are connected to the connection holes 17 between the side chambers 15 and the main chamber 16 of the hydraulic telescopic rod 2. Controlling the opening and closing of the connection holes 17 controls the flow of hydraulic oil 7, thereby achieving the extension and locking of the hydraulic telescopic rod 2. Hydraulic oil 7 fills the side chambers 15 of the hydraulic telescopic rod 2, and its transfer enables the extension and retraction function. The sealing limiter 8, the telescopic piston 9, the stationary piston 10, the connecting spring 11, the valve 12, and the sealing plug 14 are all internal components of the hydraulic telescopic rod 2, working together to achieve the hydraulic extension and retraction function. The oak base 18, which is the main body of the base 4, provides stable support. The rubber pad layer 19 is located below the base 4, providing anti-slip and cushioning effects.

[0072] This invention utilizes the telescopic function of the hydraulic telescopic rod 2, combined with the supporting role of the top pipe support 3 and the stabilizing role of the base 4, to effectively support pipelines surrounding urban tunnel excavation. The device is easy to operate, height adjustable, energy-saving and environmentally friendly, occupies a small area, and is reusable, reducing pipeline maintenance costs and improving the reliability and rationality of support.

[0073] This utility model discloses a support device for pipelines surrounding urban tunnel excavation, which not only provides rigid support for the pipeline but also allows for strain space, making the support system more rational and complete. From an energy-saving perspective, this support device for pipelines surrounding urban tunnel excavation can adapt to the support needs at different elevations and can be reused. As excavation and backfilling progress, only two to three cycles of this device are needed to complete the entire support task. From a safety perspective, the hydraulic system can evenly distribute the force received onto any part in contact with the liquid, maximizing the utilization of material strength.

[0074] From an economic perspective, this utility model's support device for pipelines surrounding urban tunnel excavation, while providing safety and energy conservation, is made from relatively common and inexpensive materials. The main costs are for hydraulic oil and stainless steel. Market research indicates that these two materials are relatively expensive. However, considering the low demand and recyclable nature of the device, the economic benefits of its application in tunnel operation for maintaining pipeline safety far outweigh its cost.

[0075] The above content is only for illustrating the technical concept of this utility model and should not be construed as limiting the scope of protection of this utility model. Any modifications made to the technical solution based on the technical concept proposed in this utility model shall fall within the scope of protection of the claims of this utility model.

Claims

1. A supporting device for surrounding pipe of urban tunneling construction, characterized in that, include: A vertically installed hydraulic telescopic rod (2), a top tube support (3) installed at the upper end of the hydraulic telescopic rod (2), and a base (4) installed at the lower end of the hydraulic telescopic rod (2). The hydraulic telescopic rod (2) is provided with oil stop valves (6) on both sides of the top, and the oil stop valves (6) are used to adjust the extension length of the hydraulic telescopic rod (2).

2. The support device for urban tunneling construction surrounding pipes according to claim 1, characterized in that, The hydraulic telescopic rod (2) is a double-layer cylindrical structure, with the inner layer being the main chamber (16) and the outer layer being the side chamber (15), and the hydraulic oil (7) is transferred between the main chamber (16) and the side chamber (15).

3. The support device for urban tunneling construction surrounding pipes according to claim 2, characterized in that, The main chamber (16) and the side chamber (15) are connected through a connecting hole (17), and the oil stop valve (6) is used to control the opening and closing of the connecting hole (17); a sealing limiter (8) is provided between the main chamber (16) and the side chamber (15).

4. The support device for urban tunneling construction surrounding pipes according to claim 3, characterized in that, The hydraulic telescopic rod (2) includes a telescopic piston (9) and a stationary piston (10). The cavity between the telescopic piston (9) and the stationary piston (10) is used to hold hydraulic oil (7). The hydraulic oil (7) is transferred between the side chamber (15) and the cavity through the connecting hole (17).

5. The support device for urban tunneling construction surrounding pipes according to claim 1, characterized in that, The top pipe support (3) is made of rigid polyurethane adhesive; the cross-section of the top pipe support (3) is arched, and the pipe to be supported (1) is placed above the top pipe support (3) and directly contacts the top pipe support (3).

6. The supporting device for urban tunneling construction surrounding pipes according to claim 1, characterized in that, The top tube support (3) is connected to the upper end of the hydraulic telescopic rod (2) by fasteners.

7. The supporting device for urban tunneling construction surrounding pipes according to claim 1, characterized in that, A connecting spring (11) is installed between the top tube support (3) and the hydraulic telescopic rod (2).

8. The support device for pipelines surrounding urban tunnel excavation as described in claim 1, characterized in that, The base (4) is placed on the tunnel lining (5) and connected to the lower end of the hydraulic telescopic rod (2) by fasteners.

9. The supporting device for urban tunneling construction surrounding pipes according to claim 1, characterized in that, The base (4) is made of oak wood, and a rubber pad (19) is spliced ​​under the base (4).

10. The supporting device for urban tunneling construction surrounding pipes according to claim 1, characterized in that, The oil stop valve (6) includes a valve (12) and a sealing plug (14), which are connected by bolts (13).

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