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Railway tunnel for buffering aerodynamics effects of high-speed train in tunnel

An aerodynamic, high-speed train technology, applied in tunnels, mining equipment, earthwork drilling, etc., can solve problems such as increased energy consumption of locomotives, heat accumulation in tunnels, increased air resistance, etc., to reduce fatigue damage, reduce pressure, The effect of reducing dynamic frictional resistance

Active Publication Date: 2015-06-24
江苏汉象建设集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The increase of air resistance not only increases the energy consumption of locomotives, but also leads to heat accumulation and temperature rise in the tunnel, causing various safety hazards

Method used

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  • Railway tunnel for buffering aerodynamics effects of high-speed train in tunnel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1 A railway tunnel that alleviates the aerodynamic effect of high-speed trains in the tunnel, wherein the railway tunnel includes a rock mass 1, a tunnel lining 2 supporting the rock mass, and a ballastless track 3, on the top or both sides of the tunnel lining 2 A first wellhead 4 is provided; a second wellhead 5 is provided in the middle of the ballastless track 3; a ventilation duct 6 is provided between the rock mass 1 and the tunnel lining 2, and one end of the ventilation duct 6 communicates with the first wellhead 4, and the other end communicates with the first wellhead 4; The second wellhead 5 is connected, the first wellhead 4, the second wellhead 5 and the air duct 6 can be in the same longitudinal section in the tunnel, and the first wellhead 4, the second wellhead 5 and the air duct 6 constitute an air circulation structure; along the tunnel length direction An air circulation structure is provided at intervals. The distance between adjacent air ...

Embodiment 2

[0014] Embodiment 2 On the basis of Embodiment 1, the air circulation structure close to the tunnel entrance is 10-30m away from the tunnel entrance.

Embodiment 3

[0015] Embodiment 3 On the basis of Embodiment 1 or 2, the cross section of the first wellhead 4 is circular, and the diameter gradually decreases from the opening toward the inside.

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Abstract

The invention discloses a railway tunnel for buffering the aerodynamics effects of a high-speed train in the tunnel. First well mouths are formed at the top or two sides of a tunnel lining; second well mouths are formed in the middle of a ballastless track; a vent pipeline is arranged between rock and the tunnel lining, one end of the vent pipeline is communicated with the first well mouths, the other end of the vent pipeline is communicated with the second well mouths, and ventilation structural bodies are formed by the first well mouths, the second well mouths and the vent pipeline; the ventilation structural bodies are arranged on the tunnel in the length direction at intervals. The various aerodynamics effects including transient pressure in a hole, the hole opening micropressure wave effect, pneumatic loads in the tunnel and locomotive resistance are buffered.

Description

technical field [0001] The invention relates to the field of high-speed railway tunnels, in particular to a railway tunnel for alleviating the aerodynamic effect of high-speed trains in the tunnel. Background technique [0002] When a high-speed train passes through a tunnel, a series of aerodynamic effects will occur, including: the pressure in the tunnel suddenly rises, causing a transient pressure in the locomotive, and the transient pressure will generate a pressure difference in the eardrum of the human body, causing the passenger's eardrum Discomfort, even dizziness and vomiting, seriously affect the comfort and health of passengers. The locomotive, tunnel lining structure and auxiliary facilities in the tunnel (such as lighting fixtures, etc.) are subjected to repeated aerodynamic loads, causing fatigue damage to the car body structure, auxiliary facilities in the tunnel and tunnel lining, and reducing the durability of auxiliary facilities in the tunnel and tunnel li...

Claims

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Application Information

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IPC IPC(8): E21D9/14
CPCE21D9/14
Inventor 不公告发明人
Owner 江苏汉象建设集团有限公司
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