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A self-air curtain system for reducing air intrusion in a dome and square-bottom tunnel

An air curtain and tunnel technology, which is applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc., can solve the problems of high-load operation of the tunnel insulation system, deterioration of the environment in the tunnel, and low cost performance, so as to reduce air intrusion Quantity, reduced energy consumption, low cost effect

Active Publication Date: 2022-04-19
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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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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  • A self-air curtain system for reducing air intrusion in a dome and square-bottom tunnel
  • A self-air curtain system for reducing air intrusion in a dome and square-bottom tunnel
  • A self-air curtain system for reducing air intrusion in a dome and square-bottom tunnel

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Effect test

Embodiment 1

[0080] The present embodiment discloses a cold area dome square bottom tunnel mouth section using natural ventilation to reduce the intrusion of cold air tunnel top air curtain system, the system comprising the introduction of air plate 1; the bottom arc structure of the air duct body 2; the top arc structure of the air duct body 3; the arc surface export air plate 4;

[0081] Among them, the imported air plate and the bottom arc structure of the main air duct are connected in turn, which is an integrated structure, and the import air plate is connected with the wall surfaces on both sides of the original tunnel, forming a four-sided closed area at the entrance to guide the air flow into the main air duct; the import air plate is a straight line with a specific slope as the starting line, and the plate formed by the original tunnel top curve as the guiding line is a three-dimensional curved surface with a specific slope and a flat surface, and the arc structure at the bottom of th...

Embodiment 2

[0094] The present embodiment discloses a tunnel top air curtain system that uses natural ventilation to reduce the intrusion of cold air in the tunnel section of the tunnel with a dome square bottom highway in the cold zone, mainly including the introduction of air plate 1; the bottom arc structure of the main body of the air duct 2; the top arc structure of the main body of the air duct 3; the arc surface export air plate 4;

[0095] Among them, the imported air plate and the bottom arc structure of the main air duct are connected in turn, which is an integrated structure, and the import air plate is connected with the wall surfaces on both sides of the original tunnel, forming a four-sided closed area at the entrance to guide the air flow into the main air duct; the import air plate is a straight line with a specific slope as the starting line, and the plate formed by the original tunnel top curve as the guiding line is a three-dimensional curved surface with a specific slope a...

Embodiment 3

[0111] The present embodiment discloses a cold area dome square bottom highway tunnel tunnel mouth section using natural ventilation to reduce the intrusion of cold air into the tunnel top air curtain system, the system body by a number of arc surface air ducts having a specific curve form, in the original tunnel top space based on these curved surfaces with specific curves constitute the main space of the air duct, the material is consistent with the tunnel lining concrete structure, need to meet the safety, reliability, the construction method can be further refined. Mainly including the introduction of the air plate 1; the bottom arc structure of the main body of the air duct 2; the top arc structure of the main body of the air duct 3; the arc surface of the export of the air plate 4, each arc surface that constitutes the air duct has a specific curve bending form, through these specific curve bending forms to optimize the arc surface of the air duct, so that the air duct can c...

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Abstract

The present invention proposes a self-air curtain system for reducing air intrusion in a tunnel with a dome and a square bottom, which consists of a curved air duct with a specific curved form, mainly including an air guide plate, an arc surface at the top of the main body of the air duct, and an arc surface at the bottom of the main body of the air duct 1. Outlet air plate, each arc surface that constitutes the air duct has a specific curved form, through these specific arc air ducts, the air duct can change the direction of the air entering from the air guide plate with low resistance, forming a tunnel A directional air curtain with the opposite wind direction but with a certain angle of inclination. The system of the invention has simple structure, extremely high reliability, does not require external energy input, avoids high-load operation of the tunnel thermal insulation system, and reduces the probability of accidental danger.

Description

Technical field [0001] The present invention belongs to the field of tunnel and underground engineering ventilation engineering, specifically a cold area dome square bottom tunnel opening section using natural ventilation to reduce the intrusion of cold air in the tunnel top air curtain system. Background [0002] There are two types of problems in the tunnel and underground engineering ventilation engineering: first, how to quickly and efficiently discharge the dust particles, fire fumes and other harmful substances generated by human activities or accidents in the tunnel through reasonable air organization; second, how to make the outdoor air that is not conducive to the environment in the tunnel as little as possible through reasonable air organization. For tunnels in the cold areas of northeast and northwest China, it is not uncommon for cold air to invade the tunnel and cause the tunnel lining to freeze crack, equipment and facilities to freeze and make the tunnel cannot be...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21F1/14
CPCE21F1/14E21F1/003
Inventor 高然张思凯杨长青郭纬周航王萌杜五一
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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