Tunnel cold-proof and freezing-proof system in alpine regions

A technology for alpine regions and tunnels, applied in tunnels, tunnel linings, underground chambers, etc., it can solve the problems of unsustainable and stable energy supply, difficult to obtain, etc.

Inactive Publication Date: 2020-07-03
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This energy is not easy to obtain, and cannot g

Method used

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  • Tunnel cold-proof and freezing-proof system in alpine regions
  • Tunnel cold-proof and freezing-proof system in alpine regions
  • Tunnel cold-proof and freezing-proof system in alpine regions

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0068] Example 1

[0069] See figure 1 . The embodiment of the present invention provides a cold-proof and frost-resistant system for a tunnel 8 in an alpine region, which includes a fan 6, a generator 5, an anti-freezing layer 3, and an electric heating element.

[0070] Wherein, the fan 6 is arranged in the tunnel 8, the generator 5 is connected to the fan 6, and the antifreeze layer 3 is arranged between the initial support 2 and the secondary lining 4 of the tunnel 8.

[0071] The electric heating element is electrically connected to the generator 5, and the electric heating element is arranged in the drainage system of the tunnel 8 and / or in the antifreeze layer 3, and the drainage system includes a central trench 11 and a side trench 10. That is, the electric heating element can be arranged only in the drainage system of the tunnel 8, or only in the anti-freezing layer 3, or the electric heating element can be arranged in the drainage system of the tunnel 8 and the anti-freezi...

Example Embodiment

[0088] Example 2

[0089] See figure 2 . The embodiment of the present invention provides a cold-proof and frost-resistant system for a tunnel 8 in an alpine region. The difference from Embodiment 1 is that: in this embodiment, the frost-resistant layer 3 is disposed on the secondary lining 4 near the center of the tunnel 8. side.

Example Embodiment

[0090] Example 3

[0091] See image 3 This embodiment provides a method for calculating the heat energy of the cold-proof and frost-resistant system of the tunnel 8 in the high-cold area, which is used to calculate the heat energy that the cold-proof and frost-resistant system of the tunnel 8 in the high-cold area can generate when the wind passes through the tunnel 8. , The thermal energy calculation method includes the following steps:

[0092] S1. Collect or calculate the first wind speed of the piston wind or natural wind before passing the fan 6, the second wind speed after passing the fan 6, and the instantaneous wind speed when passing the fan 6;

[0093] Specifically, the first wind speed can be obtained by measurement or calculation.

[0094] When the train passes through the tunnel 8, the first wind speed of the piston wind before the fan 6 can be calculated in the following way:

[0095] When calculating by constant flow:

[0096]

[0097] When calculating by constant flow: ...

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Abstract

The invention relates to the field of tunnel engineering, in particular to a tunnel cold-proof and freezing-proof system in alpine regions. The tunnel cold-proof and freezing-proof system comprises afan, a generator, a freezing-proof layer and an electric heating element, wherein the fan is arranged in a tunnel; the generator is connected with the fan; the freezing-proof layer is arranged betweena primary support and a secondary lining of the tunnel or arranged on the side, close to the center of the tunnel, of the secondary lining; and the electric heating element is electrically connectedwith the generator, and the electric heating element is arranged in a drainage system and/or the freezing-proof layer of the tunnel. The tunnel cold-proof and freezing-proof method and the heat energycalculation method are based on the system. According to the tunnel cold-proof and freezing-proof system, clean energy wind energy generated in the tunnel is utilized, extra manual energy applicationis not needed, freezing damage is avoided, and meanwhile the beneficial effects of being capable of saving energy, free of pollution and high in working frequency are achieved.

Description

technical field [0001] The invention relates to the field of tunnel engineering, in particular to a cold and frost-proof system for tunnels in alpine regions. Background technique [0002] Tunnel projects in alpine regions often face the problem of freezing damage, which will have serious adverse effects on the construction and operation of tunnel projects. Long-term freeze-thaw cycles can easily cause thermal-thaw slumps at the entrance of the cave, threatening the safety of the cave entrance, and at the same time intensify the intensity of frost heave year by year. The secondary lining of the tunnel entrance section in cold regions is prone to various freeze-thaw related cracks, which directly affects the self-waterproofing of the structure, and becomes the main part of the structure for water leakage and ice hanging. After the concrete structure cracks, it is more likely to fall off, threatening the safety of driving. The drainage system of the tunnel is mainly composed ...

Claims

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Application Information

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IPC IPC(8): E21D11/38F03D9/11F03D9/46G06F30/20H05B1/02
CPCE21D11/38F03D9/11F03D9/46H05B1/0202Y02B10/30Y02E10/72Y02E10/728Y02E70/30
Inventor 范雲鹤郑长青陶伟明曹彧匡亮周路军辜英晗余刚唐思聪吴林粟威黎旭袁志刚徐浩迪刘泽勇张莹秋
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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