Synchronous construction platform for tunnel group T-shaped liaison channel construction

Abstract

The utility model provides a kind of for the synchronous construction platform of tunnel group T type contact passage construction, including contact passage construction system and material transport system.Contact passage construction system is set in the position corresponding with contact passage in main tunnel, and the side, which is away from contact passage, forms traffic space between the segment of main tunnel.Material transport system includes hoisting equipment arranged in traffic space, hoisting equipment is configured to transfer material in the way of hoisting between the two sides of contact passage construction system along the length direction of main tunnel.The scheme of the utility model can make full use of the back side space of contact passage construction system, even for small diameter main tunnel, material transfer between upstream side and downstream side of contact passage construction system can be realized, synchronous construction of main tunnel and contact passage can be realized in various scenarios, which is beneficial to shorten construction period and improve construction efficiency.

Description

Technical Field

[0001] This utility model relates to the field of underground engineering technology, and more specifically, to a synchronous construction platform for the construction of T-shaped connecting passages in tunnel groups. Background Technology

[0002] The "Code for Design of Metro" (GB 50157-2013) and the "Code for Design of Disaster Prevention, Evacuation and Rescue Engineering of Railway Tunnels" (TB10020-2017) stipulate that when the continuous length of two single-track tunnels is greater than 600m, a connecting passage should be provided, and a Class A fire door with two-way opening should be provided at both ends of the passage. Traditional methods for constructing connecting passages mostly involve freezing the soil to reinforce it, followed by excavation using mining methods. However, in water-rich strata, the freezing method poses significant risks due to the quality of the freezing process. Furthermore, the freezing process is time-consuming, and mining methods are inefficient, resulting in long construction periods and substantial post-construction settlement. Therefore, to shorten the construction period and reduce construction risks, a mechanical method for constructing connecting passages, namely, using tunnel boring machines (TBMs) for excavation, has been proposed.

[0003] The tunnel connected by the connecting passage can be called the main tunnel. During construction, a main track is usually erected inside the main tunnel to transport construction materials and personnel via rail transport. However, when mechanical methods are used for connecting passage construction, the related supporting equipment is installed inside the main tunnel, occupying passage space and obstructing the passage of the track within the main tunnel. This prevents the entrance side of the main tunnel from connecting with the excavating construction side, making it difficult to transport materials and personnel within the main tunnel. This results in other connecting passages or other parts of the main tunnel construction only being able to proceed after one connecting passage is completed, preventing multiple construction processes from being carried out simultaneously and hindering further reduction in the construction cycle. In existing technologies, for large-diameter main tunnels, a dedicated passage track can be installed inside the main tunnel behind the supporting equipment for connecting passage construction and connected to the main track via a track-switching device to facilitate the transfer of materials and personnel. However, when the diameter of the main tunnel is small, the space behind the supporting equipment for connecting passage construction is often insufficient to install a passage track.

[0004] Therefore, there is a need to provide a synchronous construction platform for the construction of T-shaped connecting passages in tunnel groups to improve the above-mentioned problems. Utility Model Content

[0005] The purpose of this invention is to provide a synchronous construction platform for the construction of T-shaped connecting passages in tunnel groups, so as to improve the problem of the difficulty in transferring materials and personnel on both sides of the construction position of the connecting passage in the main tunnel (especially the small-diameter main tunnel) when using mechanical methods for connecting passage construction, thereby realizing the synchronous construction of multiple processes, improving construction efficiency, and shortening the construction period.

[0006] According to one aspect of the present invention, the connecting passage is used to connect at least one main tunnel, and the synchronous construction platform includes: A connecting passage construction system, wherein the connecting passage construction system is installed within the main tunnel at a location corresponding to the connecting passage, and the side of the connecting passage construction system facing away from the connecting passage forms a passageway between it and the segments of the main tunnel; and A material transport system, comprising hoisting equipment disposed within the passageway, the hoisting equipment being configured to transfer materials between the two sides of the connecting passageway construction system along the length of the main tunnel by hoisting.

[0007] In some embodiments, the hoisting equipment includes: A support frame is provided on the upstream and downstream sides of the main tunnel along the length of the connecting passage construction system; The hoisting beam, which is supported by the support frame; and A crane connected to the hoisting beam is capable of moving along the hoisting beam between the upstream and downstream sides of the connecting passage construction system along the length of the main tunnel.

[0008] In some embodiments, the hoisting equipment includes at least two cranes arranged in parallel on the hoisting beam.

[0009] In some embodiments, the hoisting mechanism is a chain-driven electric hoist, a wheeled electric hoist, a single-beam electric hoist, a double-beam electric hoist, a hydraulically driven hoist, or a chain-driven hoist.

[0010] In some embodiments, a traveling mechanism is provided at the bottom of the support frame, and the support frame is movably mounted on a support surface within the main tunnel via the traveling mechanism. The support frame is also provided with a braking mechanism for fixing the traveling mechanism.

[0011] In some embodiments, at least one of the upstream and downstream sides of the connecting passage construction system is provided with a plurality of support frames spaced apart along the length of the main tunnel.

[0012] In some embodiments, the material transport system further includes ground transport equipment configured to move across the passageway on a support surface within the main tunnel to transfer materials between the two sides of the connecting passage construction system along the length of the main tunnel.

[0013] In some embodiments, the material transport system further includes material transport vehicles located upstream and / or downstream of the main tunnel along the length of the connecting passage construction system, the material transport vehicles being used to provide materials to be transferred and / or receive materials that have already been transferred.

[0014] In some embodiments, the communication channel construction system includes at least one of the following: A jacking system is installed in the main tunnel corresponding to the starting end of the connecting passage, and is used to support the tunneling equipment in the tunneling operation of the connecting passage; A receiving end sleeve, wherein the receiving end sleeve is disposed within the main tunnel corresponding to the receiving end of the communication channel, and is used to receive the tunneling equipment of the communication channel; and A trolley is installed in the main tunnel corresponding to the starting end and / or receiving end of the communication channel, and serves as an auxiliary device for the jacking system or the receiving end sleeve.

[0015] In some embodiments, the jacking system further includes an earthmoving device, at least a portion of which is disposed in the space below the hoisting equipment. The earthmoving device is used to transport the earthwork generated by the tunneling equipment to a predetermined location outside the construction site.

[0016] The synchronous construction platform of this utility model can achieve the following beneficial effects: Using the synchronous construction platform according to this utility model for mechanical connection tunnel construction can make full use of the space on the back side of the connection tunnel construction system. Even for small-diameter main tunnels, materials can be transferred between the upstream and downstream sides of the connection tunnel construction system. This enables synchronous construction of the main tunnel and the connection tunnel in various scenarios, which helps to shorten the construction period and improve construction efficiency. Attached Figure Description

[0017] To better understand the above and other objects, features, advantages, and functions of this utility model, reference can be made to the preferred embodiments shown in the accompanying drawings. The same reference numerals in the drawings refer to the same parts. Those skilled in the art should understand that the drawings are intended to schematically illustrate the preferred embodiments of this utility model and do not limit the scope of this utility model in any way; the parts in the drawings are not drawn to scale. Figure 1This is a schematic diagram of a synchronous construction platform according to a preferred embodiment of the present invention, viewed along the length of the main tunnel. Figure 2 for Figure 1 The diagram shown illustrates the synchronous construction platform viewed along the length of the connecting passage. Figure 3 for Figure 1 A schematic diagram showing the top view of the synchronous construction platform; and Figure 4 This is a schematic diagram of the synchronous construction platform according to another preferred embodiment of the present invention, viewed along the length of the main tunnel, showing two sets of cranes. Detailed Implementation

[0018] Now, with reference to the accompanying drawings, specific embodiments of the present invention will be described in detail. The embodiments described herein are merely preferred embodiments of the present invention; those skilled in the art can conceive of other ways to implement the present invention based on these preferred embodiments, and such other ways also fall within the scope of the present invention.

[0019] To achieve interconnectivity in underground space networks, numerous T-shaped connecting tunnels are required. Examples include: connecting passages between subway and highway sections, subway entrances and ventilation shafts, municipal utility tunnel maintenance shafts, intermediate ventilation shafts in long tunnels, and waterworks tunnel connections. This invention provides a synchronous construction platform suitable for mechanical construction of T-shaped connecting passages in tunnel groups. The connecting passage can be a prefabricated connecting passage composed of assembled units such as tunnel segments or sections. This connecting passage can be used to connect one or two main subway tunnels or other types of main tunnels.

[0020] like Figures 1 to 3As shown, within the completed section of the main tunnel 1, equipment for the mechanical method of connecting tunnel construction is installed, positioned corresponding to the connecting tunnel 2 to be excavated. This equipment for the mechanical method of connecting tunnel construction can be referred to as the connecting tunnel construction system. In some embodiments, the connecting tunnel construction system may include a jacking system 20, a trolley 21, and a receiving end sleeve (not shown). The jacking system 20 is installed within the main tunnel corresponding to the starting end of the connecting tunnel, and may include, for example, a reaction frame, a force transmission component, and a launching vehicle. The reaction frame provides support for the tunneling equipment used in the mechanical method of connecting tunnel construction to advance forward. The force transmission component connects the reaction frame to the main tunnel segments on the same side or opposite side of the connecting tunnel, ultimately transmitting the supporting force of the reaction frame to the main tunnel segments by bearing tensile or supporting forces. The launching vehicle provides vertical support for components such as the reaction frame. The receiving end sleeve is installed within the main tunnel corresponding to the receiving end of the connecting tunnel and is used to receive the tunneling equipment that has completed its excavation work. The trolley 21 can be used as a supporting device for the jacking system 20 or the receiving end sleeve, for example, it can be set on one or both sides of the starting trolley (or receiving end sleeve) along the length of the main tunnel 1, for storing materials related to the construction of the mechanical connecting passage, such as connecting passage segments.

[0021] Taking the jacking system 20 as an example, the tunneling equipment and other supporting equipment used for the mechanical method of connecting passage construction are usually installed on the side of the reaction frame facing the connecting passage. A certain passage space can be formed between the reaction frame and the main tunnel segments on the side away from the connecting passage. According to the present invention, the synchronous construction platform further includes a material transport system 10 associated with this passage space. In this way, materials (such as main tunnel segments used for the construction of the main tunnel 1) can be transferred between the upstream and downstream sides of the jacking system 20 along the length direction of the main tunnel 1 using this passage space. Even while ensuring personnel safety, the passage space can also be used for personnel transfer. Therefore, the present invention enables synchronous construction of the main tunnel and the connecting passage, which is beneficial for further shortening the construction period and greatly improving construction efficiency. Of course, it is understood that the most basic function of the material transport system 10 is to first ensure the smooth transfer of materials.

[0022] Furthermore, the aforementioned passageway can also be formed between the jacking trolley 21, the receiving end sleeve, and the main tunnel segments on the side opposite to the connecting passageway. Therefore, a corresponding material transport system can also be installed for the passageway formed by the jacking trolley 21 and the receiving end sleeve. The material transport system will be described in detail below using the jacking system 20 as an example. It is understood that the following description of the material transport system also applies when the connecting passageway construction system exists in the form of the jacking trolley 21 and / or the receiving end sleeve.

[0023] Referring again to the accompanying drawings, according to a preferred embodiment of the present invention, the material transport system 10 includes hoisting equipment disposed within the passageway. For example... Figure 1 As shown, materials to be transferred (e.g., main tunnel segment 101) can be hooked onto hoisting equipment and transported through the passageway by hoisting. This hoisting method eliminates the need for laying tracks or installing transport vehicles on the ground (e.g., the support surface inside the main tunnel 1), thus requiring less ground space. Even for small-diameter main tunnels, where the width of the passageway is limited, materials can be smoothly transferred using this simple device, making it widely applicable.

[0024] refer to Figure 2 and Figure 3 In some embodiments, the hoisting equipment includes a support frame 11, a hoisting beam 12, and a crane 13. The support frame 11 is positioned on the upstream and downstream sides of the jacking system 20 along the length of the main tunnel 1 to provide support. The support frame 11 can be constructed, for example, in the form of a gantry. Preferably, multiple support frames 11 can be arranged on one or both sides at intervals to provide stable support. Preferably, a traveling mechanism 111, such as rollers, can also be provided on the support frame 11. This traveling mechanism 111 allows the support frame 11 to be easily moved on the support surface within the main tunnel 1 for fine-tuning of its position. Furthermore, after the completion of a connecting passage, the support frame 11 can be moved to a new working position via the traveling mechanism 111. The support frame 11 can also be equipped with a braking mechanism (not shown) to fix the traveling mechanism 111, ensuring stability of the support frame 11 during support provision.

[0025] The hoisting beam 12 is mounted on the support frame 11 and supported in the air by the support frame 11. The crane 13 is mounted on the hoisting beam 12 and can reciprocate along the hoisting beam between the upstream and downstream sides of the jacking system 20 along the length of the main tunnel 1. In some embodiments, the crane 13 may specifically be a chain-driven electric hoist, a wheeled electric hoist, a single-beam electric hoist, a double-beam electric hoist, a hydraulically driven crane, or a chain-driven crane, etc. The crane 13 and the hoisting beam 12 have small lateral dimensions, thus requiring less space. Even in spaces with limited width for conventional transportation equipment, the crane 13 and the hoisting beam 12 can be easily arranged and pass smoothly. The crane 13 is supported in the air by the hoisting beam 12 and the support frame 11, ensuring that the material being transferred is located at the lateral diameter of the main tunnel segment during hoisting, i.e., at the maximum width of the passage space, thus minimizing the restriction of the passage space on the size of the transferred material.

[0026] refer to Figure 4In another preferred embodiment, at least two cranes 13 can be arranged in parallel on the lifting beam 12. For materials with large weight and / or large size, two or more cranes 13 arranged in parallel can be used to lift them simultaneously to improve safety. In addition, when transferring materials with small weight and / or small size, the transfer efficiency can be improved by using multiple cranes 13 arranged in parallel to transport them individually.

[0027] Preferably, in another preferred embodiment, when the width of the passageway is less restricted, the material transport system 10 may further include ground transport equipment. This ground transport equipment may be, for example, a transport vehicle, which can move across the passageway on the support surface within the main tunnel 1 to transfer materials between the two sides of the jacking system 20 along the length of the main tunnel 1. According to this scheme, the material transport system 10 includes compound material transfer methods such as ground transport and aerial hoisting. Ground transport or aerial hoisting can be selectively chosen based on the characteristics of the materials, or both methods can be used simultaneously to improve material transfer efficiency. Of course, when the width of the passageway is significantly restricted (e.g., the diameter of the main tunnel 1 is small), the ground transport equipment can be omitted, and only the hoisting equipment can be retained.

[0028] In addition, such as Figure 3 As shown, the material transport system 10 may further include a material transport vehicle 14, which is located on the upstream and / or downstream side of the jacking system 20 along the length of the main tunnel 1. The material transport vehicle 14 may be a powered transport vehicle (battery-powered vehicle, diesel locomotive, etc.) or a train consisting of unpowered transport vehicles towed by a powered transport vehicle. The material transport vehicle 14 is capable of moving along the length of the main tunnel 1 on the support surface or track within the main tunnel 1, for transferring materials (e.g., main tunnel segments 101) from the storage location to the hoisting equipment for transfer via the passageway, or for receiving transferred materials from the hoisting equipment and transporting them to the next transfer point or construction location.

[0029] Preferably, to make full use of the passage space, an earthmoving device for the jacking system 20 can also be installed below the hoisting equipment of the material transport system 10. For earth pressure balance tunneling equipment, the earthmoving device can be, for example, a belt conveyor. For slurry balance tunneling equipment, the earthmoving device can be, for example, a conveying pipeline. At least a portion of the belt conveyor or conveying pipeline can be installed below the hoisting equipment to transport the excavated soil generated during tunneling to a predetermined location outside the construction site of the connecting passage.

[0030] The present invention has been described above with reference to the accompanying drawings. Using the synchronous construction platform according to the present invention for mechanical construction of connecting passages allows for full utilization of the space behind the supporting equipment for connecting passage construction. Even for small-diameter main tunnels, materials can be transferred between the upstream and downstream sides of the supporting equipment for connecting passage construction using hoisting equipment. This enables synchronous construction of the main tunnel and connecting passages in various scenarios, which helps to shorten the construction period and improve construction efficiency.

[0031] The above description of various embodiments of this utility model is provided for the purpose of description to a person of ordinary skill in the art. It is not intended to exclude or limit the utility model to a single disclosed embodiment. As stated above, a person of ordinary skill in the art will understand that various alternatives and variations of this utility model exist. Therefore, although some alternative embodiments have been specifically described, a person of ordinary skill in the art will understand or relatively easily develop other embodiments. This utility model is intended to include all alternatives, modifications, and variations of the utility model described herein, as well as other embodiments falling within the spirit and scope of the utility model described above.

Claims

1. A synchronous construction platform for constructing a T-shaped connecting passage in a tunnel group, wherein the connecting passage connects at least one main tunnel (1), characterized in that, The synchronous construction platform includes: A connecting passage construction system is installed within the main tunnel (1) at a location corresponding to the connecting passage. The side of the connecting passage construction system facing away from the connecting passage forms a passageway between it and the segments of the main tunnel (1). Material transport system (10), the material transport system (10) includes hoisting equipment disposed in the passage space, the hoisting equipment being configured to transfer materials by hoisting between the two sides of the main tunnel (1) along the length direction of the connecting passage construction system.

2. The synchronous construction platform according to claim 1, characterized in that, The hoisting equipment includes: Support frame (11) is provided on the upstream and downstream sides of the connecting passage construction system along the length direction of the main tunnel (1); The hoisting beam (12) is supported by the support frame (11); and A crane (13) is connected to the hoisting beam (12) and is capable of moving along the hoisting beam (12) between the upstream and downstream sides of the connecting passage construction system along the length of the main tunnel (1).

3. The synchronous construction platform according to claim 2, characterized in that, The hoisting equipment includes at least two sets of cranes (13), which are arranged in parallel on the hoisting beam (12).

4. The synchronous construction platform according to claim 2, characterized in that, The crane (13) is constructed as a chain-type electric hoist, a wheel-type electric hoist, a single-beam electric hoist, a double-beam electric hoist, a hydraulically driven crane, or a chain-driven crane.

5. The synchronous construction platform according to claim 2, characterized in that, The bottom of the support frame (11) is provided with a walking mechanism (111) and a braking mechanism. The support frame (11) is movably mounted on the support surface inside the main tunnel (1) via the walking mechanism (111). The braking mechanism is used to fix the walking mechanism (111).

6. The synchronous construction platform according to claim 2, characterized in that, At least one of the upstream and downstream sides of the connecting passage construction system is provided with a plurality of support frames (11) spaced apart along the length direction of the main tunnel (1).

7. The synchronous construction platform according to claim 1, characterized in that, The material transport system (10) also includes ground transport equipment configured to move across the passageway on a support surface within the main tunnel (1) to transfer materials between the two sides of the connecting passage construction system along the length of the main tunnel (1).

8. The synchronous construction platform according to claim 1, characterized in that, The material transport system (10) also includes a material transport vehicle (14), which is located on the upstream and / or downstream side of the connecting passage construction system along the length of the main tunnel (1) for providing materials to be transferred and / or receiving materials that have already been transferred.

9. The synchronous construction platform according to claim 1, characterized in that, The communication channel construction system includes at least one of the following: A jacking system is installed in the main tunnel corresponding to the starting end of the connecting passage, and is used to support the tunneling equipment in the tunneling operation of the connecting passage; A receiving end sleeve is installed in the main tunnel corresponding to the receiving end of the communication channel, and is used to receive the tunneling equipment of the communication channel; and A trolley is installed in the main tunnel corresponding to the starting end and / or receiving end of the communication channel, and serves as an auxiliary device for the jacking system or the receiving end sleeve.

10. The synchronous construction platform according to claim 9, characterized in that, The jacking system (20) also includes an earthmoving device, at least a portion of which is located in the space below the hoisting equipment. The earthmoving device is used to transport the earthwork generated by the tunneling equipment to a predetermined location outside the construction site.

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