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Reinforcing method for long-distance tunnel inner wall

A long-distance, in-tunnel technology, used in tunnels, tunnel linings, earth-moving drilling, etc., can solve problems such as jamming, boulders falling easily, ground collapse, etc., to ensure stability, eliminate longitudinal impact, and ensure resistance to impact effect

Inactive Publication Date: 2021-07-13
江西中昌工程咨询监理有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in actual construction, it is often encountered that the shield tunnels under the existing buildings and hangs boulders in the interval. If the boulders in the interval are not effectively reinforced, due to the front and top of the tunnel face during shield tunneling, Unloading, the boulder is easy to fall, causing the machine to jam, and in serious cases, there will be a ground subsidence accident

Method used

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  • Reinforcing method for long-distance tunnel inner wall
  • Reinforcing method for long-distance tunnel inner wall
  • Reinforcing method for long-distance tunnel inner wall

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for strengthening the inner wall of a long-distance tunnel, which is characterized in that: it includes the following steps, step A: first grouting the reinforcement layer, which is a cylindrical structure obtained by construction on the surrounding rock excavation surface of the fault fracture zone; the grouting reinforcement layer also includes Several anchor rods are seamless steel pipes. The energy-dissipating and shock-absorbing layer covers the bottom of the grouting reinforcement layer; the material of the energy-dissipating and shock-absorbing layer is rubber material, the thickness of which is 10-30cm. become.

[0026] Step B: Use the steel arch again and set it above the prefabricated tunnel lining structure. distance.

[0027] Step C: Install a monitoring reinforcement instrument on the inner wall of the grouting reinforcement layer, the monitoring reinforcement instrument includes a monitoring device and a nozzle, the monitoring device is installe...

Embodiment 2

[0029] see Figure 1-6 , a long-distance tunnel inner wall reinforcement mechanism, including a tunnel inner wall 1 and a tunnel inner arch bridge 2, a tunnel load-bearing block 3 is fixedly installed on the inner wall of the tunnel inner wall 1, and a force-bearing block 4 is fixedly installed inside the tunnel load-bearing block 3, and the force-bearing block The inner side of 4 is movably connected with a lower pressing block 5, and the inner side of the lower pressing block 5 is fixedly equipped with a stressed axis 6, and the outer side of the stressed axis 6 is movably installed with a shaft rod 7, and the inner side of the shaft rod 7 is movably installed with an adapter The axis 8 and the top of the shaft 7 are movably connected with a centripetal disk 9; when the tunnel inner wall 1 is impacted longitudinally, the impact force compresses the tunnel load-bearing block 3, and the tunnel load-bearing block 3 deforms, pressing the force-bearing block 4 downward , the forc...

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Abstract

The invention relates to the technical field of buildings, and discloses a reinforcing mechanism for a long-distance tunnel inner wall. The reinforcing mechanism comprises the tunnel inner wall and an arch bridge in a tunnel; a tunnel bearing block is fixedly mounted on the inner wall of the tunnel inner wall; a stress block is fixedly mounted in the tunnel bearing block; a lower pressing block is movably connected with the inner side of the stress block; and a stress axis is fixedly mounted on the inner side of the lower pressing block. According to the reinforcing mechanism for the long-distance tunnel inner wall, when the tunnel inner wall is subjected to longitudinal impact, impact force compresses the tunnel bearing block, the tunnel bearing block deforms and presses the stress block downwards, then the stress block presses the lower pressing block downwards, the stress axis is fixedly installed in the lower pressing block, then the stress axis drives a shaft rod to be bent, then the shaft rod drives a switching axis to rotate, and a centripetal force disc connected with the top end of a shaft rod body rotates immediately, so that longitudinal impact on the tunnel inner wall is eliminated, and meanwhile, the overall stability of the tunnel inner wall is guaranteed.

Description

technical field [0001] The invention relates to the technical field of construction, in particular to a method for reinforcing the inner wall of a long-distance tunnel. Background technique [0002] With the continuous development of society, more and more cities are undergoing large-scale rail transit construction. During the construction process, they will encounter more complex engineering geological conditions, and will also face more and more difficult engineering geological problems. Granites of the Yanshanian period are widely distributed in the Guangzhou area. Under the control and influence of geological structural conditions, magma composition and surrounding rock material composition, it is easy to develop unweathered or slightly weathered hard spheroids during the weathering process, that is, "solitary rocks" . Shield construction is automated and highly informatized, and has become the main method of subway tunnel construction in my country. The existence of bo...

Claims

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Application Information

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IPC IPC(8): E21D11/10E21D11/12E21D11/18E21F17/18E21F17/00
CPCE21D11/10E21D11/12E21D11/18E21F17/00E21F17/18
Inventor 徐然姚海波曾建文
Owner 江西中昌工程咨询监理有限公司
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