Suck throughpreventionsmoke exhausting auxiliary device of a tunnel shaft

An auxiliary device and tunnel technology, applied in shaft equipment, mine/tunnel ventilation, mining equipment, etc., can solve problems such as the decline of the smoke exhaust effect of the shaft, and achieve the effect of improving the effect and ensuring the safety of life.

Active Publication Date: 2019-09-13
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the suction through phenomenon occurs, the cold air in the lower part of the tunnel is directly sucked into the shaft, resulting in a significant decline in the smoke exhaust effect of the shaft

Method used

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  • Suck throughpreventionsmoke exhausting auxiliary device of a tunnel shaft
  • Suck throughpreventionsmoke exhausting auxiliary device of a tunnel shaft
  • Suck throughpreventionsmoke exhausting auxiliary device of a tunnel shaft

Examples

Experimental program
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Effect test

Embodiment 1

[0026] An auxiliary device for anti-sucking and exhausting smoke in a tunnel shaft, characterized in that: the auxiliary device for preventing inhalation and exhausting the tunnel shaft includes a conical baffle, the conical baffle is arranged at the bottom opening of the tunnel shaft, and the conical baffle is formed by Two adjustment plates 4 are formed, and the two adjustment plates 4 are assembled in a "herringbone" shape, and the opening of the herringbone is arranged downward. By adding a conical baffle under the shaft, the air inhalation problem of natural smoke exhaust from the shaft can be suppressed. In terms of safety, adding a conical baffle to the tunnel ceiling for the shaft smoke exhaust will not affect the overall structure of the tunnel, and Under normal circumstances, it does not affect the normal progress of tunnel traffic; changing the angle and height of the conical plate according to the temperature ensures that the smoke exhaust efficiency of the tunnel s...

Embodiment 2

[0039] The above-mentioned auxiliary device for anti-sucking and exhausting smoke in a tunnel shaft can use the following control method: the flue gas temperature sensing probe can be arranged at the top of the conical baffle and the bottom of both sides, and the temperature threshold T can be set. c , when the temperature at the top of the conical baffle is greater than T c , the conical baffle descends until the temperature measured by the flue gas temperature sensing probe is lower than T c stop. When the temperature at the top of the conical baffle is lower than T c , the conical baffle lifts up until the temperature measured by the flue gas temperature sensing probe is higher than T c stop. When the temperature at the bottom of both sides of the conical baffle is greater than T c , the two splints of the conical baffle are closed inward, and the angle θ between the splints decreases until the temperature measured by the flue gas temperature sensing probe is lower than...

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Abstract

The invention discloses suck throughprevention smoke exhausting auxiliary device of a tunnel shaft. The suck throughprevention smoke exhausting auxiliary device of the tunnel shaft is characterized inthat the tunnel shaft suck throughprevention smoke exhausting auxiliary device comprises a conical baffle, the conical baffle is arranged at the opening of the bottom of the tunnel shaft, the conicalbaffle is composed of two adjusting plates, the two adjusting plates are assembled in aherringbone shape, and the opening ofa herringbone faces downwards. Compared with the prior art, the suck throughprevention smoke exhausting auxiliary device of the tunnel shaft has the following advantages that the air suck through problem of natural smoke exhaust of the shaft is suppressedby adding an extra angleadjustable conical baffle under the shaft, temperature of external smokeis sensed through an additional sensor, the angle of the conical baffle is adjusted in real time to ensure that the efficiency of the natural smoke exhaust of the shaft is kept at a high level at all times and further ensure life safety of internally trapped personnel and favorable development of rescue work after fire occurs.

Description

technical field [0001] The invention relates to the technical field of tunnel safety, in particular to an auxiliary device for preventing suction, penetration and exhaust of smoke in a tunnel shaft. Background technique [0002] Due to the accelerated process of urbanization in China, a large number of rural populations have flooded into cities, causing tension in urban land use and land resources, and leading to serious problems of urban traffic congestion. In this case, rational development and utilization of underground space is an effective way to alleviate this contradiction. In recent years, the emergence of urban tunnels has greatly eased the pressure on urban traffic. However, while urban tunnels bring convenience to the public, they also bring safety problems——tunnel fires. Because the space in the tunnel is narrow and long, the smoke is not suitable for diffusion, which is the main factor causing casualties. The recent occurrence of many serious and large tunnel ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D7/00E21F1/18
CPCE21D7/00E21F1/18
Inventor 陶常法刘晓平钱叶剑焦鸿溢彭鹏李韦龙柳杨青吴越
Owner HEFEI UNIV OF TECH
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