Self-air curtain system with platforms for reducing air invasion amount of horseshoe-shaped tunnel

A horseshoe-shaped and air curtain technology, which is applied in mine/tunnel ventilation, special data processing applications, design optimization/simulation, etc. It can solve problems such as high-load operation of tunnel insulation systems, deterioration of the environment in tunnels, and high energy consumption.

Active Publication Date: 2020-10-16
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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  • Self-air curtain system with platforms for reducing air invasion amount of horseshoe-shaped tunnel
  • Self-air curtain system with platforms for reducing air invasion amount of horseshoe-shaped tunnel
  • Self-air curtain system with platforms for reducing air invasion amount of horseshoe-shaped tunnel

Examples

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Effect test

Embodiment 1

[0208] This embodiment discloses a tunnel top air curtain system that uses natural ventilation to reduce cold wind intrusion at the entrance of a horseshoe-shaped road tunnel in cold regions. The system includes an air inlet plate 1, a bottom arc structure of the air duct main body 2, and a top arc surface of the air duct main body Structure 3. Curved surface leading out wind panel 4;

[0209] Among them, the air inlet plate is connected with the arc structure at the bottom of the main body of the air duct in order to form an integral structure. In addition, the air inlet plate is connected with the tunnel wall to close the entrance area; the air inlet plate is a kind of inlet edge and the radial air plate. The exit edge is a curve, and the transverse wind panel body is a three-dimensional curved surface with a certain slope and a straight surface, and the arc surface structure of the bottom of the air duct is a curved surface convex;

[0210] The arc surface structure on the top o...

Embodiment 2

[0223] This embodiment discloses an air curtain system at the top of the tunnel that uses natural ventilation to reduce the intrusion of cold wind at the entrance of a horseshoe-shaped road tunnel in cold regions. 3. The arc surface leads the wind board 4;

[0224] The air inlet plate 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 air inlet plate is connected with the original tunnel platform to form the entrance area; the air inlet plate is a kind of entrance edge and The exit edge is a curve, and the transverse wind panel body is a three-dimensional curved surface with a specific slope and flat surface. See the specific form figure 2 , The slope of the transverse wind panel body is 2. The arc surface structure at the bottom of the air duct is a convex curved surface;

[0225] The arc surface structure on the top of the air duct body and the arc surface leading-out wind plate are an int...

Embodiment 3

[0250] This embodiment discloses an air curtain system at the top of the tunnel at the entrance of a horseshoe-shaped road tunnel in cold regions that uses natural ventilation to reduce the intrusion of cold wind. The main body of the system is composed of some curved air ducts with specific curved forms (the air ducts are composed of curved surfaces. The top space of the tunnel is based on these curved surfaces with specific curves to form the main space of the air duct. The material adopts the concrete structure consistent with the tunnel lining. When safety and reliability are required, the construction method can be further refined), mainly including the introduction of wind panels 1. Curved surface structure at the bottom of the main body of the air duct 2. Curved surface structure at the top of the main body of the air duct 3. Lead-out wind plate 4. Each curved surface constituting the air duct has a specific curved form, which is optimized by these specific curved forms T...

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Abstract

The invention relates to a self-air curtain system with platforms for reducing the air invasion amount of a horseshoe-shaped tunnel. The self-air curtain system comprises an air guide-in plate, an airduct body bottom cambered surface structure, an air duct body top cambered surface structure and a cambered surface air guide-out plate. The two sides in the tunnel extend inwards to form the platforms. The two ends of the system are connected to the platforms in the tunnel. The air guide-in plate and the air duct body bottom cambered surface structure are sequentially connected to form a lower integrated structure. The air duct body top cambered surface structure and the cambered surface air guide-out plate are sequentially connected to form an upper integrated structure. According to the self-air curtain system, each cambered surface forming an air duct has a specific curve form, and through the specific cambered surface air ducts, the air ducts can change the direction of air enteringfrom the air guide-in plate with low resistance, and a directional air curtain which is opposite to the air inlet direction of the tunnel and has a certain inclination angle is formed. The self-air curtain system is simple in structure and extremely high in reliability, external input energy is not needed, meanwhile, the high-load operation of a tunnel heat preservation system is avoided, and thechance of accidental dangers is reduced.

Description

Technical field [0001] The invention belongs to the field of tunnels and underground engineering ventilation engineering, and in particular relates to a self-air curtain system for a horseshoe tunnel with a platform to reduce air intrusion. Background technique [0002] There are two types of problems in tunnels and underground engineering ventilation projects: First, how to use reasonable air organization to quickly and efficiently discharge harmful substances such as dust particles and fire smoke generated by human activities or accidents in the tunnel out of the tunnel; second, How to make the outdoor air that is not conducive to the environment in the tunnel invade the tunnel as little as possible through reasonable air organization. For tunnels in cold regions such as northeast and northwest of my country, cold air intrusion into the tunnel causes freezing cracks in the tunnel lining and freezing of equipment and facilities, which make the tunnel unusable. Therefore, organiz...

Claims

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Application Information

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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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