A method for propulsion of a shield machine through a shallow-buried underground excavation tunnel

A shield machine and underground excavation technology, applied in tunnels, roads, tracks, etc., can solve the problems of shield machine dismantling and hoisting.

Active Publication Date: 2021-09-10
中铁二十局集团第五工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After excavating 104m, the shield machine enters a 150m-long underground excavation tunnel. The width of the underground excavation section is 7.5m, the height is 7.65m, and the buried depth of the tunnel is about 18m. Due to the existence of underground excavation tunnels in the entire section, the shield machine cannot be powered by segments Complete the travel in the entire section, and because the shield machine cannot be disassembled and hoisted in the confined space, a method of advancing the shield machine through the shallow buried tunnel is needed to solve the problem of shield tunneling in the tunnel. The problem of institutional progress

Method used

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  • A method for propulsion of a shield machine through a shallow-buried underground excavation tunnel
  • A method for propulsion of a shield machine through a shallow-buried underground excavation tunnel
  • A method for propulsion of a shield machine through a shallow-buried underground excavation tunnel

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Embodiment Construction

[0049] Such as figure 1 Shown is a method for propulsing a shield machine through a shallow-buried underground excavation tunnel. The shield machine includes a shield body 9 and a trolley structure. The trolley structure is composed of a trolley 6 and a connecting bridge 5. The concealed Tunnel digging 1 includes a propulsion section 1-1 connected to the exit opening of the last shield section 14 and a transition section 1-2 connected to the entry opening of the next shield section 18. The propulsion section 1-1 is provided with The mark 21 of the small mileage end of the reaction force frame, the mark 21 of the small mileage end of the reaction force frame is set on the side close to the transition section 1-2, and the propulsion method includes the following steps:

[0050] Such as figure 2 As shown, step 1, pouring the concrete guide platform: pouring the concrete guide platform 2 on the second lining at the bottom of the underground excavation tunnel 1, using the concret...

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Abstract

The invention discloses a method for advancing a shield machine through a shallow-buried tunnel. The method includes: 1. pouring a concrete guide platform; 2. laying a shield walking guide rail; 3. supporting a connecting bridge; 4. disassembling the shield machine ; 5. Propel the shield body; 6. Lay the battery car guide rail and the trolley guide rail; 7. Install the reaction frame; 8. Push the trolley structure; The present invention separates the shield body of the shield machine from the trolley structure, and then advances them separately, which can safely and quickly push through the underground excavation tunnel. At the same time, the concrete guide platform is used as the support base of the shield body, which is convenient for the later maintenance of the shield body. The propulsion of the shield body and the trolley structure shortens the construction period; the use of the on-rail weight pusher to propel the shield body requires less mechanical equipment, which simplifies the propulsion work of the shield body and makes the shield body When the body loses its forward moving power in the underground tunnel, it can quickly pass through the underground tunnel, so that the shield body is safe and free from damage during the advancement process.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and in particular relates to a method for advancing a shield machine through shallow buried tunnels. Background technique [0002] When the shield machine is moving, the segment needs to be used as the supporting power. When the shield machine goes out of the hole and enters the underground excavation section, it cannot be disassembled and hoisted in the confined space. Losing the segment support cannot provide the shield machine with forward movement power. Under such circumstances, the shield machine will not be able to move forward independently. In order to ensure that the shield machine enters the end of the next section smoothly, safely and quickly, it is necessary to push the shield machine through the underground excavation section to ensure the construction of the next section. . During the construction of Xi'an Metro Line 4, the total length of the shield section from Daming...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/06E01B23/00E01B23/10E01B2/00
CPCE01B2/003E01B23/00E01B23/10E21D9/06E21D9/0621
Inventor 豆旭东张云飞魏辉梁缄鑫宁振国李朝成曹佳斌万昌盛刘炜龙刘晓宁
Owner 中铁二十局集团第五工程有限公司
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