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Horseshoe tunnel with platform reduces air intrusion using air curtain system

A horseshoe-shaped, air curtain technology, which is used in mine/tunnel ventilation, special data processing applications, design optimization/simulation, etc. The effect of reducing air intrusion, reducing energy consumption, and low cost

Active Publication Date: 2022-07-15
CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alleviate the risk of freezing damage caused by the large intrusion of outdoor cold air at the tunnel entrance section in cold regions, solve the problems of high-load operation of the tunnel insulation system, huge energy consumption and fire caused by high-load operation, and solve the problem of traditional air curtain systems that are effective but extremely low cost performance and high-speed airflow Rolling up a lot of dust makes the environment in the tunnel worse

Method used

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  • Horseshoe tunnel with platform reduces air intrusion using air curtain system
  • Horseshoe tunnel with platform reduces air intrusion using air curtain system
  • Horseshoe tunnel with platform reduces air intrusion using air curtain system

Examples

Experimental program
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Effect test

Embodiment 1

[0197] This embodiment discloses a tunnel top air curtain system that utilizes natural ventilation to reduce the intrusion of cold air at the entrance of a horseshoe-shaped highway tunnel in a cold region. Structure 3. Arc surface exporting wind panel 4;

[0198] Among them, the lead-in wind panel is connected with the arc structure at the bottom of the main body of the air duct in turn to form an integrated structure. In addition, the lead-in wind panel is connected with the tunnel wall to close the entrance area; the lead-in wind panel is a kind of inlet edge and The edge of the outlet is a curve, and the horizontal air plate body is a three-dimensional curved surface with a specific slope and a straight surface, and the cambered surface structure at the bottom of the main body of the air duct is a curved curved surface;

[0199] The camber structure at the top of the main body of the air duct and the camber outlet air plate are integrated; the camber structure at the top of...

Embodiment 2

[0213] This embodiment discloses a tunnel top air curtain system that utilizes natural ventilation to reduce the intrusion of cold air at the entrance of a horseshoe-shaped highway tunnel in cold regions. 3. Arc surface export air plate 4;

[0214] The lead-in wind panel is connected with the arc surface structure at the bottom of the main body of the air duct in turn to form an integrated structure; in addition, the lead-in wind panel is connected with the original tunnel platform to form the entrance area; the lead-in wind panel is a kind of inlet edge and The exit edge is a curve, and the lateral wind panel body is a three-dimensional curved surface with a specific slope and a flat surface. For the specific form, see figure 2 , the slope of the transverse wind panel body is 2. The arc structure at the bottom of the main body of the air duct is a curved curved surface;

[0215] The camber structure at the top of the main body of the air duct and the camber outlet air plat...

Embodiment 3

[0238] This embodiment discloses a tunnel top air curtain system that uses natural ventilation to reduce the intrusion of cold air at the entrance of a horseshoe-shaped highway tunnel in cold regions. The top space of the tunnel is based on these curved surfaces with specific curves to form the main space of the air duct, and the material adopts the same concrete structure as the tunnel lining. When safety and reliability are required, the construction method can be further refined), mainly including the introduction of wind panels 1. The cambered surface structure at the bottom of the main body of the air duct 2. The cambered surface structure at the top of the air duct body 3. The outlet air plate 4. Each cambered surface that constitutes the air duct has a specific curved and curved form, which is optimized by these specific curved and curved forms. The arc surface of the air duct enables the air duct to change the direction of the air entering from the air inlet panel with ...

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Abstract

The invention relates to a self-air curtain system for a horseshoe-shaped tunnel with a platform to reduce the amount of air intrusion. The platform extends from the inside, and the two ends of the system are connected to the platform in the tunnel; the inlet wind panel and the camber structure at the bottom of the main body of the air duct are connected in sequence, which is a lower integrated structure; For the upper integrated structure. In the present invention, each cambered surface constituting the air duct has a specific curve form, and through these specific cambered air ducts, the air duct can change the direction of the air entering from the air inlet panel with low resistance, forming a shape that is connected to the tunnel inlet. A directional air curtain with opposite wind direction but with a certain angle of inclination. The system of the invention has simple structure, high reliability, does not need external input energy, avoids the high-load operation of the tunnel thermal insulation system, and reduces the probability of accidental danger.

Description

technical field [0001] The invention belongs to the field of tunnel and underground engineering ventilation engineering, and in particular relates to a self-air curtain system for a horseshoe-shaped tunnel with a platform to reduce air intrusion. Background technique [0002] There are two types of problems in tunnel and underground engineering ventilation projects: first, how to quickly and efficiently discharge dust particles, fire smoke and other harmful substances generated in the tunnel due to human activities or accidents through reasonable air organization; second, How to make the outdoor air unfavorable to the tunnel environment intrude into the tunnel as little as possible through reasonable air organization. For tunnels located in cold regions such as the northeast and northwest of my country, it is not uncommon for cold air to invade into the tunnel, causing freezing cracks in the tunnel lining and freezing of equipment and facilities, which makes the tunnel unabl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F1/00E21F1/04E21F1/18G06F30/20
CPCE21F1/003E21F1/04E21F1/18G06F30/20
Inventor 杜五一马江燕邓保顺江晶晶高然张思凯
Owner CHINA RAILWAY FIRST SURVEY & DESIGN INST GRP
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