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Shock wave attenuation structure of protective door of railway tunnel

A protective door and shock wave technology, applied in the field of protective doors, can solve problems such as failure to meet the requirements of railway tunnel protective doors and human injury, and achieve the effects of simple structure, reduced shock wave pressure, and convenient implementation

Inactive Publication Date: 2014-10-15
CHINA RAILWAY ERYUAN ENG GRP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the relationship between the casualty level and overpressure provided by "Human Safety Distance Under the Action of Air Shock Wave", the minimum threshold of shock wave overpressure for human damage is 13.73kPa, which shows that the shock wave peak pressure penetrates from the lower door gap to the back of the door Will cause some damage to the human body
Therefore, the existing anti-blast doors and fire doors cannot meet the requirements of railway tunnel protective doors.

Method used

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  • Shock wave attenuation structure of protective door of railway tunnel
  • Shock wave attenuation structure of protective door of railway tunnel
  • Shock wave attenuation structure of protective door of railway tunnel

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] refer to figure 1 with Figure 4 , the shock wave attenuation structure of the railway tunnel protection door of the present invention includes a door leaf 10, and at least one groove 21 is provided on the bottom surface of the door leaf 10 along its thickness direction. Due to the strong divergence of the explosion shock wave, when the shock wave enters the groove 21 through the lower door slit, the shock wave will diffuse into the groove 21, and part of the shock wave will further penetrate into the next-level groove 21 through the lower door slit, thus finally A small number of shock waves reach the groove 21 of the last stage. In addition, after the shock wave inside the groove 21 is reflected, part of the shock wave will reach the groove 21 of the next stage, but the peak pressure has been greatly reduced, and the action time of the peak p...

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Abstract

The invention discloses a shock wave attenuation structure of a protective door of a railway tunnel. The protective door comprises a door leaf. At least one groove is formed in the bottom of the door leaf along the thickness direction of the door leaf and continuously or intermittently extends along the width direction of the door leaf. Porous material filling layers are fixedly arranged on the inner walls of the grooves. The shock wave attenuation structure has the advantages that shock wave pressures which are transmitted to the back of the door leaf from lower door slots can be effectively reduced, and accordingly the safety of personnel behind the door leaf can be guaranteed.

Description

technical field [0001] The invention relates to a protective door, in particular to a shock wave attenuation structure for a protective door used in emergency rescue stations, cross passages, emergency exits or refuges in railway tunnels. Background technique [0002] In recent years, a large number of extra-long railway tunnels have emerged in the western mountainous area. When the length of the tunnel is greater than 20km, it is necessary to set up emergency rescue stations, cross passages, emergency exits or shelters in the tunnel body. In order to isolate the fire source, smoke, explosion shock wave, etc., protective doors should be set up, and the protective doors should have certain anti-explosion and fireproof performance. [0003] The relevant provisions of "Code for Fire Protection in Design of Railway Engineering" (TB10063-2007) and "Code for Design of Railway Tunnel Disaster Prevention and Rescue Evacuation Engineering" (TB10020-2012) include: Protective doors wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F11/00E21F17/103
Inventor 张峻领李二平余艳丽张致恒王珣欧毅姚小军王志强
Owner CHINA RAILWAY ERYUAN ENG GRP CO LTD
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