Novel tunnel construction ventilation system based on high-pressure air supply and ventilation method thereof

A ventilation system and high-pressure air technology, applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc., can solve problems such as lagging construction progress and insufficient air supply, and achieve smooth inner walls, reduced land occupation, and durability strong effect

Active Publication Date: 2021-08-06
CHINA RAILWAY 23RD CONSTR BUREAU LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above technical problems, the purpose of the present invention is to provide a new tunnel construction ventilation system based on high-pressure air supply, aiming at solving the problem of the existing tunnel construction ventilation system. Insufficient wind, lagging construction progress and other problems, the new tunnel construction ventilation system is suitable for long-distance air supply to small-section tunnels, which can effectively guarantee the construction progress and safety of small-section long-distance tunnels, and the new tunnel construction ventilation system has ventilation High efficiency, low wind loss, and strong durability can effectively reduce equipment operation and maintenance costs

Method used

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  • Novel tunnel construction ventilation system based on high-pressure air supply and ventilation method thereof
  • Novel tunnel construction ventilation system based on high-pressure air supply and ventilation method thereof
  • Novel tunnel construction ventilation system based on high-pressure air supply and ventilation method thereof

Examples

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Embodiment 1

[0052] Combine Figure 1 to 3 As shown, this embodiment provides a new tunnel construction ventilation system based on high pressure air supply, which is applied to small section tunnels, including tunnel right-line forward hole inlet 8, auxiliary transverse passage 10 and through auxiliary cross channel 10 The tunnel left-line positive or parallel guiding hole of the tunnel right-line front hole inlet 8 is connected, and the present embodiment is an example; in particular, the ventilation system of the present embodiment includes a power supply power system and a gas stream delivery system for supply The wind power system is disposed at the entrance of the tunnel. The air supply power system is disposed at the inlet of parallel guiding cavity 7, and the airflow power system is used to form a high-speed airflow; the airflow delivery system is disposed within the tunnel hole and can be transported in network transportation The form extends to the tunnel inlet and the supply power sy...

Embodiment 2

[0065] Embodiment 2 is the same as that of the examples, and the difference is: bonding Figure 1 to 3 As shown, the present embodiment also provides a new tunnel construction ventilation system based on high pressure air supply wind, on the basis of the first example, the ventilation system of the present embodiment includes a secondary pressurization system, a secondary pressurization system The air booster pump three 3c disposed in the first high pressure transport section 4a and the air boost pump disposed in the second high pressure transport section 4b, the air boost pump three 3C is used to the first high pressure transport section 4A The high pressure new wind 14 is again pressurized, and the air boost pump four 3D is used to increase the high-pressure new wind 14 in the second high pressure transport section 4b, whereby the secondary pressurization system is used to enter the airflow delivery system. The airflow is used for twice or more. To avoid the high frequency arrang...

Embodiment 3

[0113] Example III is basically the same as in Example 2, and the difference is: binding Figure 1 to 3 as well as Figure 5 As shown, this embodiment provides a new tunnel construction ventilation system based on high pressure air supply wind, on the basis of the second embodiment, the airflow diffusion section of the ventilation system of the present embodiment is arranged in the air flow diffusion section of the present embodiment. The vent hole 25, in the illustrated embodiment, the outer profile surface of the gradient diameter high pressure hard duct A and the gradient diameter high pressure rigid duct B is uniformly arranged with a vent hole 25 for carrying out high pressure gases of the end. Diversion processing;

[0114] Combine Figure 1 to 3 as well as Figure 5 As shown, the present invention also provides a ventilation method using the new type of tunnel construction ventilation system based on high pressure air supply wind, including the following steps:

[0115] S1, ana...

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Abstract

The invention discloses a novel tunnel construction ventilation system based on high-pressure air supply and a ventilation method thereof, and relates to the technical field of tunnel construction ventilation. The ventilation system comprises an air supply power system and an airflow conveying system, wherein the air supply power system is arranged at a tunnel inlet to form high-speed airflow; the airflow conveying system is arranged in a tunnel hole, can extend to the tunnel inlet to be connected with the air supply power system and is used for conveying high-pressure airflow into a tunnel; the airflow conveying system comprises a high-pressure conveying section and an airflow diffusion section; and high-speed airflow formed by the air supply power system can sequentially pass through the high-pressure conveying section and the airflow diffusion section to enter the position near the tunnel face and form diffuse type airflow. By implementing the technical scheme, the problems that an existing tunnel construction ventilation system is insufficient in air supply, lags behind the construction progress and the like are solved, the construction progress and safety of a small-section long-distance tunnel can be effectively guaranteed, the ventilation efficiency is high, air loss is small, durability is high, and the operation and maintenance cost of equipment can be effectively reduced.

Description

Technical field [0001] The present invention relates to the field of tunnel construction ventilation technology, and in particular, there is a new tunnel construction ventilation system suitable for use in a small-scale long distance tracing tunnel, a high-pressure air supply wind and its ventilation method. Background technique [0002] With the continuous development of the construction technology of my country's infrastructure project, the tunnel project of small-circuit long tunnel features is increasing. This type of tunnel has a small opening section, the construction environment characteristics of the tunnel deep, with the increase in the tunnel, and the construction of the tunnel The layout is gradually complex, dust, CO and other pollutants are difficult to exclude, resulting in gradually deteriorating in the cave, whereby the construction ventilation has become a highlighter problem that affects the safety and quality of the long-range tunnel. [0003] According to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21F1/08E21F1/04E21F17/02E21F17/18E21F17/00
CPCE21F1/08E21F1/085E21F1/04E21F17/02E21F17/18E21F17/00Y02E10/72Y02B10/30
Inventor 田宝华张彪刘延龙赵永明陈文萍余龙文谢高英刘咏梅
Owner CHINA RAILWAY 23RD CONSTR BUREAU LTD
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