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Shield tunnel initial sealing device and use method thereof

A technology for sealing devices and shield tunnels, applied in tunnels, earthwork drilling, mining equipment, etc., can solve problems such as high costs, achieve the effects of reducing construction costs, avoiding sand gushing, and being easy to use

Inactive Publication Date: 2017-08-22
NINGBO UNIV +4
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the soil on the side of the shield needs to be reinforced to avoid soil gushing out to ensure the safety of the tunnel’s departure. There are two main reinforcement methods, one is the freezing method, and the other is the chemical method. The grout reinforcement method, although these two methods can ensure the safety of the shield tunneling, but the cost is high, and a large construction site needs to be provided

Method used

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  • Shield tunnel initial sealing device and use method thereof
  • Shield tunnel initial sealing device and use method thereof
  • Shield tunnel initial sealing device and use method thereof

Examples

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Effect test

specific Embodiment 1

[0026] A shield tunnel starting sealing device includes the following components: starting sealing barrel 1, highly elastic tail brush 2, air bag 3, grease pipeline 4, inflation pipeline 5, support frame 6, retractable support system 7 and retractable wheels to 8.

[0027] Such as figure 1 , figure 2 As shown, the inner wall of the originating sealed barrel 1 is respectively provided with at least 2 annular high-elastic tail brushes 2 and at least 1 annular air bag 3, and the wall of the originating sealed barrel 1 is respectively provided with a grease pipeline 4 and Inflatable pipeline 5, the gap formed between two adjacent highly elastic tail brushes 2 communicates with grease pipeline 4, air bag 3 communicates with inflatable pipeline 5, and the lower part of the outer wall of the originating sealed bucket 1 is provided with a support frame 6, and the support frame 6 The bottom is provided with a telescopic support system 7 and a telescopic wheel set 8.

[0028] Such a...

specific Embodiment 2

[0032] The method for using the shield tunnel originating sealing device shown in the above specific embodiment 1 comprises the following steps:

[0033] Step 1: Positioning and installation of the shield starting sealing device. Such as figure 2 and image 3 As shown in Fig. 1, move the initial sealing device of the shield tunnel to the designated position through the telescopic wheel set 8, extend the telescopic support system 7, retract the telescopic wheel set 8, and fix the initial sealing device of the shield tunnel on the bottom support 11, further fix the originating sealed barrel 1 on the embedded part 10 of the originating end structure 9 by welding.

[0034] Step 2: Seal the gap between the shield machine 12 and the originating sealing device. Such as Figure 4 As shown, the shield machine 12 is placed in the starting sealing barrel 1, and the shield tail grease 15 is injected between the high elastic tail brush 2 through the grease pipe 4 to ensure that the sh...

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Abstract

The invention discloses a shield tunnel initial sealing device and a use method thereof. The shield tunnel initial sealing device is characterized by comprising an initial sealing bucket; at least two annular high-elasticity tail brushes and at least one annular airbag are arranged on the inner wall of the initial sealing bucket; a grease pipeline and an inflation pipeline are arranged inside the wall of the initial sealing bucket; a gap formed between every two adjacent high-elasticity tail brushes communicates with the grease pipeline; the airbag communicates with the inflation pipeline; a supporting frame is arranged on the lower portion of the outer wall of the initial sealing bucket; and an extendable supporting system and a telescopic wheel pair are arranged at the bottom of the supporting frame. The use method of the shield tunnel initial sealing device comprises the steps of positioning and installation of the shield tunnel initial sealing device, interval sealing of a shield tunneling machine and the initial sealing device, and interval sealing of a lining segment and the initial sealing device. The shield tunnel initial sealing device and the use method thereof have the advantages that end mud sand can be effectively sealed under the initial condition that a shield tunnel is not reinforced, initial safety is ensured, the device is easy to use and recyclable, the shield initial expense can be greatly reduced, and the shield initial duration can be greatly shortened.

Description

technical field [0001] The invention belongs to the field of underground engineering, and in particular relates to a shield tunnel starting sealing device and a using method thereof. Background technique [0002] With the acceleration of urbanization, the utilization of underground space has become a hot spot, among which the excavation by shield method has been widely used because of its advantages of not affecting ground traffic and having little impact on the environment. Generally, the soil on the side of the shield needs to be reinforced to avoid soil gushing out to ensure the safety of the tunnel’s departure. There are two main reinforcement methods, one is the freezing method, and the other is the chemical method. The grout reinforcement method, although these two methods can ensure the safety of the shield tunneling, but the cost is high, and a large construction site needs to be provided. Contents of the invention [0003] The technical problem to be solved by th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06
CPCE21D9/0635E21D9/06
Inventor 朱瑶宏
Owner NINGBO UNIV
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