A Quantitative Evaluation Method for Smoke Exhaust Performance of Underwater Interval Tunnel Smoke Exhaust System
A technology of interval tunnel and smoke exhaust system, which is applied in measurement devices, testing of machine/structural components, instruments, etc., can solve the problem that the research on ventilation and smoke exhaust system of underwater interval tunnel is not systematic, and the power source of ventilation and smoke exhaust system has not yet been established. , flow parameters, the quantification method of smoke exhaust performance has not yet been formed, etc., to achieve the effect of optimizing the design scheme, operating energy saving, and simple calculation process
Active Publication Date: 2022-04-01
青岛市地铁八号线有限公司 +2
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Problems solved by technology
[0004] At present, in terms of the performance of the key smoke exhaust system, Jiang Yaqiang et al. have disclosed a test device and test method for the centralized smoke exhaust performance of the tunnel smoke exhaust outlet, which quantitatively analyzes the centralized smoke exhaust performance of the tunnel smoke exhaust outlet from the perspective of exhaust heat; however, by The smoke exhaust performance characterized by this test method has not yet established the relationship between the power source and flow parameters in the ventilation and smoke exhaust system
Therefore, judging from the above conclusions and the methods involved, the research on the ventilation and smoke exhaust system of underwater interval tunnels is still not systematic. method not yet formed
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Embodiment 1
[0030] Such as figure 1 As shown, the underwater interval tunnel described in the present embodiment 1 includes a carriageway 6, a left carriageway 1, a right carriageway 2, a smoke exhaust passage 7, a left smoke exhaust passage 3, a right smoke exhaust passage 4, Concentrated smoke exhaust port 5, the lower bottom surface of the left / right exhaust duct. Wherein, the centralized smoke exhaust outlet 5 is arranged in the middle of the tunnel, and connects the left traffic lane 1 and the right traffic lane 2 with the left smoke exhaust duct 3 and the right smoke exhaust duct 4 . The driveway 6 and the exhaust duct 7 are in the same cave body, and the bottom surface of the left / right exhaust duct divides the cave body into two, the upper structure is the exhaust duct 7, the lower structure is the lane 6, and the lane 6 It is divided into the left traffic lane 1 and the right traffic lane 2 centered on the centralized smoke exhaust outlet 5, and the smoke exhaust duct 7 is also ...
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The present invention relates to the field of tunnel ventilation and smoke exhaust, in particular to a method for effectively evaluating and quantitatively analyzing the smoke exhaust performance of an underwater interval tunnel smoke exhaust system with a single centralized smoke exhaust port. The method includes the following steps: (S1) Calculating water The sum Q of the total air flow input by the press-in fan in the bottom lane of the tunnel in the lower section p ; (S2) Calculate the sum Q of the total air volume output in the smoke exhaust duct at the top of the tunnel in the underwater section e (S3) calculate system error; (S4) calculate the smoke exhaust performance coefficient H of the underwater interval tunnel smoke exhaust system VSES , H VSES The lower the value, the better the smoke extraction performance of the smoke extraction system.
Description
technical field [0001] The invention relates to the field of tunnel ventilation and smoke exhaust, in particular to a method for effectively evaluating and analyzing the smoke exhaust performance of an underwater section tunnel smoke exhaust system provided with a single centralized smoke exhaust port. Background technique [0002] Compared with ordinary subway tunnels, the probability of accidents or disasters in the underwater section tunnels that are extra long and have many passengers is greater. Also, in fires, 85% of the victims were caused by suffocation or smoke. Therefore, the ventilation and smoke exhaust system is still an important support for disaster prevention and mitigation of underwater tunnels. The key to disaster prevention and mitigation is to improve the tunnel's ventilation and exhaust capabilities. [0003] At present, the methods for studying tunnel ventilation and smoke exhaust systems mainly include engineering analogy, numerical simulation and the...
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IPC IPC(8): G01M99/00
CPCG01M99/008G01M99/005
Inventor 朱祝龙程学友赵淑云赵亚平贺维国金若翃田峰吕青松姜林月张宇
Owner 青岛市地铁八号线有限公司