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Structure for reducing tunnel micro pressure wave including air pipe

A micro-pressure wave and ventilation pipe technology, which is applied in the ventilation of mines/tunnels, tunnels, tunnel systems, etc., and can solve problems such as increased impulse noise/vibration

Active Publication Date: 2015-04-29
KOREA RAILROAD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the impulsive noise / vibration caused by micro-pressure waves at the exit of the tunnel increases significantly in small-section tunnels with slab tracks

Method used

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  • Structure for reducing tunnel micro pressure wave including air pipe
  • Structure for reducing tunnel micro pressure wave including air pipe
  • Structure for reducing tunnel micro pressure wave including air pipe

Examples

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Embodiment Construction

[0018] Example embodiments will be described in detail below with reference to the accompanying drawings so that the inventive concept can be easily implemented by those skilled in the art. It should be noted, however, that the present disclosure is not limited to the example embodiments and can be implemented in any other method. In the drawings, some parts not directly related to the description are omitted to enhance the clarity of the drawings, and like reference numerals denote like parts throughout the document.

[0019] Throughout this document, the term "connected to" or "coupled to" is used to designate the connection or coupling of one element to another element, and includes cases where an element is "directly connected or coupled to" another element as well as an element through Yet another element is "electronically connected or coupled to" another element.

[0020] Throughout this document, the term "on" is used to designate the position of one element relative ...

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Abstract

A structure for reducing a tunnel micro pressure wave is provided. The structure includes a hood structure formed in front of an entry of a railroad tunnel; and an air pipe section in which at least one air pipe is provided along the circumference of the hood structure, wherein the air pipe comprises a horizontal introduction section formed to be extended from an internal side of the hood structure toward a longitudinal direction of the hood structure, an outlet section formed on an external side of the hood structure, and an intermediate section connecting the horizontal introduction section and the outlet section through each other.

Description

[0001] Cross References to Related Applications [0002] This application claims the priority of Korean Patent Application No. 10-2013-0125215 filed on October 21, 2013, and the present invention fully refers to all disclosed technical features of the above application. technical field [0003] Embodiments described herein generally relate to structures including vent tubes for reducing tunnel micro-pressure waves. Background technique [0004] Typically, a pressure wave forms when a rail vehicle enters a rail tunnel. This pressure wave is propagated into the tunnel and is emitted outward through the tunnel exit in the form of a micro-pressure wave. Since micro-pressure waves cause impulsive noise and low-frequency vibrations to surrounding private houses, it is very important to reduce micro-pressure waves in designing railway tunnels. [0005] Therefore, in order to reduce micro-pressure waves, a buffer hood having an arched cross-section is generally arranged at the ent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/14
CPCE21D9/14E21F17/00B61B13/10E21F1/003
Inventor 金东贤
Owner KOREA RAILROAD RES INST