Ventilation and heating system and ventilation and heating construction method for tunnels in high-altitude and cold regions

Abstract

The invention discloses a ventilation and heating system and a ventilation and heating construction method for tunnels in high-altitude and cold regions. The pipe is installed on the air pipe and it includes a circular heating pipe, an air outlet and an air inlet. The circular heating pipe includes an outer steel pipe, an inner steel pipe and a ventilation heating device installed in the inner steel pipe; the ventilation and heating construction method includes steps: 1. 1. Axial flow fan installation; 2. Tunnel excavation and heating ventilation construction: During the tunnel excavation construction process, the axial flow fan is used for press-in ventilation, and the ventilation heating tube is used to control the air flow through the axial flow fan. Incoming cold air for heating. The invention has reasonable design, convenient construction and good use effect, and can solve the problems existing in the existing tunnel environment heating method that the tunnel construction is easily affected by collision, the heating effect is poor, and the heating demand in the low temperature environment cannot be met.

Description

Technical field [0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a tunnel ventilation and heating system and a ventilation heating construction method in high altitude and cold areas. Background technique [0002] During the construction of tunnels in low-temperature areas or high-altitude and cold areas with an average altitude of 2600 meters or more (also called plateau alpine areas), the construction impact caused by low temperature is more significant, directly affecting construction safety, quality and progress. Among them, the alpine region refers to an area with high altitude, low temperature and permafrost. At present, there are mainly three methods for heating tunnel environment commonly used in the process of tunnel construction: First, boiler heating air heating technology, the principle is to use boiler heating to provide heat source (steam or hot water), manufacturers purchase SRL or SRZ air The heater (the pri...

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a ventilation and heating system for tunnels in high-altitude and high-cold regions, which has a simple structure, reasonable design, easy installation, layout, use and operation, and good use effect. There are problems in the tunnel environment heating method that are easy to be affected by collisions, tunnel construction, heating effect is poor, and cannot meet the heating demand in low temperature environments, etc.

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