Stable supporting device for shield tunneling machine to penetrate through large-diameter pipe network

Abstract

The utility model relates to the technical field of large-diameter pipe network protection, in particular to a stable supporting device for a shield tunneling machine to penetrate through a large-diameter pipe network, which comprises a foundation, the large-diameter pipe network is embedded in the foundation, a to-be-shield tunnel penetrates through the lower portion of the large-diameter pipe network, a plurality of arc-shaped holes are formed in the foundation, and an arc-shaped pipe is inserted in each arc-shaped hole. The two ends of the arc-shaped pipe extend out of the arc-shaped hole, and concrete grout is filled between the arc-shaped hole and the arc-shaped pipe and in the arc-shaped pipe. The large-diameter pipe network grouting device is equivalent to high-strength grouting around a large-diameter pipe network, the geological strength around the large-diameter pipe network is enhanced, on the other hand, lifting force can be generated on the large-diameter pipe network through the arc-shaped pipes, and when shield construction is carried out on a to-be-shield tunnel, the construction efficiency is improved. The disturbance of the shield tunneling machine to the geology below the large-diameter pipe network can also be isolated by the arc-shaped pipe, and the large-diameter pipe network cannot be influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation support, in particular to a stable support device for a shield machine to pass through large-diameter pipe networks. Background Technique

[0002] A tunnel is an engineering structure buried in the stratum and is a form of human utilization of underground space. Tunnels can be divided into traffic tunnels, hydraulic tunnels, municipal tunnels, mine tunnels, and military tunnels. A shield machine, full name shield tunneling machine, is a special construction machinery for tunnel excavation. Modern shield tunneling machines integrate optics, mechanics, electricity, hydraulics, sensors, and information technology, and have functions such as excavating and cutting soil bodies, transporting soil residues, assembling tunnel linings, and measuring and guiding deviation correction. It involves multiple disciplines such as geology, civil engineering, machinery, mechanics, hydraulics, electricity, control, and measurement, and needs to be "tailor-made" designed and manufactured according to different geological conditions, with extremely high reliability requirements. Shield tunneling machines have been widely used in tunnel projects such as subways, railways, highways, municipal engineering, and hydropower.

[0003] When a tunnel passes through urban areas, the underground pipe networks in the city are intricate. For example, there are large-diameter natural gas pipes, urban drainage pipes, and heating pipes. During the operation of the shield machine, a particularly large soil pressure will be generated on the surrounding soil in the radial direction of the tunnel. When the shield machine leaves, the soil around the tunnel will undergo a certain settlement deformation. If there are large-diameter pipe networks here, the settlement-deformed soil will cause the large-diameter pipe networks to deform, and it is easy for the large-diameter pipe networks to break. In the prior art, holes are usually drilled and grouted around the large-diameter pipe networks to enhance the strength of the geology around the large-diameter pipe networks. However, it is very difficult to inject the slurry under the large-diameter pipe networks by using the grouting reinforcement method. Therefore, although this method can inhibit the deformation of the large-diameter pipe networks to a certain extent, the stability is poor, and there is still a risk of overall settlement of the large-diameter pipe networks. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies existing in the prior art, and to propose a stable support device for a shield machine to pass through large-diameter pipe networks.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A stable support device for a shield machine to pass through large-diameter pipe networks, including a foundation. A large-diameter pipe network is buried in the foundation. When a shield tunnel passes under the large-diameter pipe network, a plurality of arc-shaped holes are provided on the foundation. An arc-shaped pipe is inserted in each arc-shaped hole. Both ends of the arc-shaped pipe extend out of the arc-shaped hole. Concrete slurry is filled between the arc-shaped hole and the arc-shaped pipe and inside the arc-shaped pipe.

[0007] Preferably, a plurality of through holes are provided on the pipe wall of the arc-shaped pipe.

[0008] Preferably, two reinforcement grooves are dug on the upper surface of the foundation. The two reinforcement grooves are symmetrically arranged with the axis of the large-diameter pipe network as the center. Both ends of the arc-shaped holes are located in the reinforcement grooves. Reinforcement plates are arranged in the reinforcement grooves, and each arc-shaped pipe is fixed to the reinforcement plate.

[0009] Preferably, the reinforcement grooves are also filled with concrete slurry.

[0010] The beneficial effects of the present utility model: The stable support device for a shield machine to pass through a large-diameter pipe network provided by the present utility model is equivalent to performing high-strength grouting around the large-diameter pipe network, enhancing the geological strength around the large-diameter pipe network. On the other hand, it can also generate a lifting force on the large-diameter pipe network through multiple arc-shaped pipes. When shield tunneling is carried out for the shield tunnel, the disturbance caused by the shield machine to the geology under the large-diameter pipe network will also be isolated by the arc-shaped pipes and will not affect the large-diameter pipe network. Even if the geology under the arc-shaped pipes undergoes settlement deformation, the large-diameter pipe network will not undergo settlement deformation under the lifting force of the arc-shaped pipes on the large-diameter pipe network. Description of the Drawings

[0011] Figure 1 is the basic structure diagram of a stable support device for a shield machine to pass through a large-diameter pipe network provided by the present utility model;

[0012] Figure 2 is Figure 1 the partial enlarged view of part A of

[0013] Figure 3 is Figure 1 the top view of Detailed Embodiment

[0014] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Embodiment

[0015] As Figures 1-3 shown, a stable support device for a shield machine to pass through a large-diameter pipe network in this embodiment includes a foundation 1. A large-diameter pipe network 11 is buried in the foundation 1, and a shield tunnel 12 is to pass under the large-diameter pipe network 11.

[0016] There are multiple arc-shaped holes 2 provided on the foundation 1. The arc-shaped holes 2 are drilled by a specific drilling device or by directional drilling, which is prior art and will not be elaborated here. An arc-shaped pipe 3 is inserted into each arc-shaped hole 2. The way of inserting the arc-shaped pipe 3 into the arc-shaped hole 2 is prior art and will not be described here either. Both ends of the arc-shaped pipe 3 extend out of the arc-shaped hole 2. A number of through holes are provided on the pipe wall of the arc-shaped pipe 3. Concrete slurry is filled between the arc-shaped hole 2 and the arc-shaped pipe 3 and inside the arc-shaped pipe 3. After the concrete slurry is cured and gains strength, the arc-shaped pipe 3 is firmly connected to the surrounding geology inside the arc-shaped hole 2. By setting a number of through holes, the connection between the arc-shaped pipe 3 and the surrounding geology inside the arc-shaped hole 2 can be further stabilized, enhancing the connection strength. After such a design, it is equivalent to carrying out high-strength grouting around the large-diameter pipe network 11, enhancing the geological strength around the large-diameter pipe network 11. On the other hand, a lifting force can also be generated on the large-diameter pipe network 11 by multiple arc-shaped pipes 3. When shield tunneling is carried out for the shield tunnel 12, the disturbance caused by the shield machine to the geology below the large-diameter pipe network 11 will be isolated by the arc-shaped pipes 3 and will not affect the large-diameter pipe network 11. Even if the geology below the arc-shaped pipe 3 undergoes settlement deformation, the large-diameter pipe network 11 will not undergo settlement deformation under the lifting force of the arc-shaped pipe 3 on the large-diameter pipe network 11.

[0017] As a special form of this embodiment, two reinforcement grooves 51 are dug on the upper surface of the foundation 1. The two reinforcement grooves 51 are symmetrically arranged with the axis of the large-diameter pipe network 11 as the center. Both ends of the arc-shaped hole 2 are respectively located in the reinforcement grooves 51. A reinforcement plate 4 is arranged in the reinforcement grooves 51. Each arc-shaped pipe 3 is fixed to the reinforcement plate 4. The reinforcement grooves 51 are also filled with concrete slurry. In this way, both ends of the arc-shaped pipe 3 are reinforced by the reinforcement plate 4, so that the bearing capacity of the arc-shaped pipe 3 can be greatly increased, further protecting the large-diameter pipe network 11 and eliminating the adverse effects on the large-diameter pipe network when the shield machine passes under the large-diameter pipe network.

Claims

1. A stable support device for a shield machine passing through a large-diameter pipe network, comprising a foundation (1), a large-diameter pipe network (11) being buried in the foundation (1), and a shield tunnel (12) passing through the bottom of the large-diameter pipe network (11), characterized in that: The foundation (1) is provided with a plurality of arc-shaped holes (2), each of the arc-shaped holes (2) having an arc-shaped tube (3) inserted therein, both ends of the arc-shaped tube (3) extending outside the arc-shaped hole (2), and concrete slurry is filled between the arc-shaped hole (2) and the arc-shaped tube (3) and inside the arc-shaped tube (3).

2. A stable support device for a shield machine passing through a large diameter pipe network according to claim 1, characterized in that: A plurality of through holes are provided on the wall of the arc-shaped tube (3).

3. A stable support device for a shield machine passing through a large diameter pipe network according to claim 1, characterized in that: Two reinforcement grooves (51) are dug on the upper surface of the foundation (1), and the two reinforcement grooves (51) are symmetrically arranged with the axis of the large-diameter pipe network (11) as the center. The two ends of the arc-shaped hole (2) are respectively located in the reinforcement grooves (51). A reinforcement plate (4) is arranged in the reinforcement groove (51), and each of the arc-shaped pipes (3) is fixed to the reinforcement plate (4).

4. A stable support device for a shield machine passing through a large diameter pipe network according to claim 3, characterized in that: The reinforcement groove (51) is also filled with concrete slurry.

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