Positive accumulated temperature ventilation regulation and control device and method for tunnel drainage system in cold region

Abstract

The invention discloses a positive accumulated temperature ventilation regulation and control device and method for a tunnel drainage system in a cold region. The regulation and control device comprises a drainage system ventilation device and a temperature data collection and analysis system, wherein the drainage system ventilation device comprises a ventilation unit and a control unit, the temperature data collection and analysis system comprises an out-of-tunnel weather station thermometer and a temperature data processor, and the out-of-tunnel weather station thermometer is arranged outside a tunnel portal. According to the ventilation regulation and control device and method, a positive accumulated temperature principle and a ventilation regulation and control concept are creatively applied to heat preservation and freezing prevention of the cold region tunnel drainage system, high-temperature air in a tunnel is introduced into a heat preservation ditch of the drainage system through the ventilation unit, and therefore heat is stored in the drainage system and rock stratums around the drainage system to achieve the freezing prevention effect of the drainage system; the ventilation unit is adopted for conveying air into the heat preservation ditch, and the space within the clearance and outside the clearance of the tunnel can be fully utilized; and the long-term reliability and the anti-freezing effect of the device and the method are superior to those of a steam heating method and a cable heating method.

Description

technical field [0001] The invention relates to the field of prevention and control of tunnel frost damage that urgently needs to be solved in the construction of national key and difficult projects such as railways and highway traffic in high-altitude and cold regions of the plateau in the west and northeast of my country, specifically a positive accumulated temperature ventilation control device for tunnel drainage systems in cold regions and method. Background technique [0002] With the further development and construction of railway and highway traffic in the high-altitude cold areas of the western and northeastern plateaus of my country, the traffic road network urgently needs to gradually extend to cold areas with important national defense and international strategic significance. For example, the national key projects Qinghai-Tibet Expressway and Sichuan-Tibet Railway are located in the high-altitude and cold areas of the Qinghai-Tibet Plateau, and the most difficult...

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Problems solved by technology

[0004] In order to solve the freezing problem of the tunnel drainage system in the cold region under low temperature environment, overcome the applicability, long-term reliability and economic rationality of the existing drainage system heat preservation and heating technology, and provide a positive solution for the tunnel drainage system in the cold region The accumulative temperature ventilation control device and method, through the joint action of the drainage system and the control ventilation, prevent and control the freezing damage of the tunnel, which has a wider scope of application, lower costs and operating costs, and is more effective for thermal insulation and heating of the frozen section of the tunnel drainage system in cold regions

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