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Multi-ramp municipal and highway tunnel ventilation volume distribution calculation method

A technology of road tunnel and distribution calculation, which is applied in mine/tunnel ventilation, earthwork drilling, mining equipment, etc.

Pending Publication Date: 2021-05-18
CHINA RAILWAY LIUYUAN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In domestic patents, there is no research on the ventilation volume algorithm of multi-ramp tunnels

Method used

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  • Multi-ramp municipal and highway tunnel ventilation volume distribution calculation method
  • Multi-ramp municipal and highway tunnel ventilation volume distribution calculation method
  • Multi-ramp municipal and highway tunnel ventilation volume distribution calculation method

Examples

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Embodiment 2

[0045] see figure 2 , this embodiment takes CO as an example, which is applicable to a merged tunnel, and its calculation steps are the same as those in the first embodiment above.

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Abstract

The invention discloses a multi-ramp municipal and highway tunnel ventilation volume distribution calculation method, and relates to the technical field of municipal and highway tunnel ventilation. According to the method, a simplified pollutant discharge amount formula is adopted to calculate the pollutant discharge amount of each branch pipe of a multi-ramp tunnel; the fresh air volume of each branch pipe is calculated through a concentration dilution formula; the fresh air volume is the fresh air volume required for diluting the solubility of pollutants in the tunnel to a design value, the calculated branch pipes comprise ramp branch pipes and tunnel main branch pipes which are adjacent to each node, and the total required air volume of the multi-ramp tunnel is calculated; and the air volume required by each branch pipe of the multi-ramp tunnel is calculated by adopting an iterative method. According to the method, a foundation is laid for the technical field of tunnel ventilation, and a theoretical basis is provided for practical engineering.

Description

technical field [0001] The invention relates to the technical field of municipal and highway tunnel ventilation, in particular to a calculation method for air volume distribution of multi-ramp municipal and highway tunnel ventilation. Background technique [0002] Municipal and highway tunnels are semi-enclosed spaces, and ventilation issues have attracted the attention of relevant technical personnel and scholars. With the increase of traffic flow inside the tunnel, the CO and NO emitted by cars X Due to the poor or insufficient ventilation of the tunnel, the pollutant solubility in the tunnel is prone to be too high, especially the complex wind network structure in the multi-ramp tunnel. The reasonable distribution of air volume directly affects the air in the tunnel. Quality and physical health of personnel. Therefore, solving the problem of ventilation air volume distribution in multi-ramp tunnels has important guiding significance in the field of tunnel ventilation. ...

Claims

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Application Information

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IPC IPC(8): E21F1/00E21F17/00
CPCE21F1/00E21F17/00
Inventor 谢朝军梁艳陈宏杨志伟张美琴唐上明唐化程黄强邵振强魏雪何潇剑魏志华徐美智赖永进孙卫东张圣昊张玲霞刘艺高菊英胡建国
Owner CHINA RAILWAY LIUYUAN GRP CO LTD
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