An indoor experimental system for tunnel temperature field in cold regions

Abstract

An indoor experiment system for the temperature field of a tunnel in a cold region, including a main controller and an experimental model, the experimental model includes a freezing room and a tunnel model, the tunnel model is set inside the freezing room, the main controller is located outside the freezing room; Electric heaters are installed in the boundary temperature control zone, surrounding rock temperature sensors are distributed in the surrounding rock, and a drainage ditch is installed in the lower part of the tunnel body, and water temperature sensors and water flow sensors are distributed in the drainage ditch; an insulated water tank is also installed in the freezing room , frequency conversion fan, air conditioning fan and room temperature sensor, the heat preservation water tank communicates with the drainage ditch through the water supply pump and water supply pipe, the frequency conversion fan is located at the entrance of the tunnel model and faces the opening; surrounding rock temperature sensor, water temperature sensor, water flow sensor, room temperature sensor , frequency conversion fan, air-conditioning fan, electric heater, water heater and water supply pump are all connected to the main controller; to realize the simulation test of the three-dimensional temperature field of the tunnel's external air temperature, underground water temperature and surrounding rock temperature in cold regions.

Description

technical field [0001] The invention relates to the field of tunnels, in particular to an indoor experiment system for the temperature field of tunnels in cold regions. Background technique [0002] my country's cold regions are widely distributed, and the demand for transportation is strong. As an effective way to cross mountains and ridges, tunnel engineering is widely used. In winter, due to the negative temperature environment, tunnel frost damage occurs from time to time. On the one hand, it manifests as icing problems such as icicles, icicles, and ice plugs. question. How to effectively and scientifically study the temperature field of tunnels in cold regions is very important. [0003] At present, the related temperature field indoor simulation technology can simulate the tunnel structure and thermal insulation structure, but it is not effective in controlling the temperature boundary in a complex environment under the influence of multiple factors, and cannot effec...

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Problems solved by technology

[0003] At present, the related temperature field indoor simulation technology can simulate the tunnel structure and thermal insulation structure, but it is not effective in controlling the temperature boundary in a complex environment under the influence of multiple factors, and cannot effectively reproduce the variable environment of the temperature field of the tunnel surrounding rock in cold regions. have a great influence on the accuracy of the experimental results

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