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A tunnel subsidence protection device and its construction method

A protective device and tunnel settlement technology, which is applied in tunnels, earthwork drilling, infrastructure engineering, etc., can solve problems such as the inability to effectively control the differential settlement of tunnel operations in weak soil areas, and achieve long-term settlement, strengthen bearing capacity, and reduce maintenance The effect of fees

Inactive Publication Date: 2016-02-24
黄俊文
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  • Abstract
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Problems solved by technology

[0009] Existing technologies are still unable to effectively control the differential settlement of tunnels in soft soil areas; if a method can be fundamentally proposed to solve the differential settlement of tunnels, it can also improve the bearing capacity of soft and weak soil layers and reduce the impact of ground loads on the tunnel above the tunnel. influence is of great significance

Method used

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  • A tunnel subsidence protection device and its construction method
  • A tunnel subsidence protection device and its construction method
  • A tunnel subsidence protection device and its construction method

Examples

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Embodiment 1

[0047] A tunnel subsidence protection device, see figure 1 , figure 2 as well as image 3 , specifically including a plurality of independent protection units, the distance between two adjacent protection units is 10-500 meters, which can ensure the overall stability of the tunnel. It is also possible to choose a single protective unit or at least two protective units that are connected in series or in other ways according to the actual situation, so as to meet different needs and have strong practicability.

[0048] The protective unit includes a pile foundation 11, a support beam 12, a traction device 13 and a support member 14, and the overall structure is simplified, see figure 1 , the traction device 13 adopts a single or multiple steel strands with a diameter of 10-50 centimeters, the parts are easy to obtain, and the load-bearing effect is good; the support beam 12 is a prefabricated support beam, and the existing When pouring reinforced concrete support beams, the ...

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Abstract

The invention provides a tunnel settlement protecting device. The protecting device comprises protection single pieces. The protection single pieces comprise pile foundations, supporting beams, traction devices and supporting components. The supporting components are matched with the inner wall of a tunnel lining structure in shape. The pile foundations comprise first single pieces and second single pieces, wherein the first single pieces and the second single pieces are arranged on the two sides of the tunnel lining structure. The two ends of each supporting beam are arranged on the corresponding first single piece and the corresponding second single piece respectively. The minimum perpendicular distance between the first single pieces and the tunnel lining structure and the minimum perpendicular distance between the second single pieces and the tunnel lining structure are 1 m-10 m. The upper ends of the traction devices are fixed to the supporting beams, and the lower ends of the traction devices are throughout the tunnel lining structure and then are fixed to the supporting components. The overall structure is simplified, overall stability of the tunnel lining structure in the processes of holing and follow-up operation can be guaranteed, the problem that a tunnel settles for a long time on a soft soil layer is solved effectively, and maintaining cost is reduced. The invention further provides a construction method of the tunnel settlement protecting device, construction is convenient, and practicability is high.

Description

technical field [0001] The invention relates to the technical field of underground engineering, in particular to a tunnel settlement protection device and a construction method thereof. Background technique [0002] With the continuous development of technology, tunnel engineering is becoming more and more common in real life, especially with the rise of subways in recent years, more and more large cities use subways as their core transportation. [0003] Most of the current tunnels in our country are built in soft soil areas. In recent years, the settlement phenomenon of soft soil subway tunnels during operation has attracted more and more attention. In terms of operation, tunnel settlement will affect the smoothness of the track, driving safety and riding comfort, and the differential settlement of the tunnel will seriously affect the driving safety of trains. Taking the Shanghai Metro Line I built on the soft soil foundation as an example, since it was officially complet...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D27/12E21D9/00
Inventor 黄俊文黄易平姚庚明陈智敏易琛张亮蔡龙
Owner 黄俊文
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