Model test device and test method for determining anti-freezing length of tunnel in cold region

• Main Authors: MA QINGUO, PENG GUIBIN, YANG XIAOGUANG, CAI ZHENGYU, SHI WENZHE, WU YUANJIN, MA GUODONG, CAO GUICAI, LUO ZHANFU, ZHAO XIWANG, ZHAO JUNXI, ZHOU CHUANCHUAN, WANG DONG, GAO HUAYONG
• Format: Patent
• Language: Chinese; English
• Published: 22.08.2023
• Subjects: INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES; MEASURING; PHYSICS; TESTING; TESTING STATIC OR DYNAMIC BALANCE OF MACHINES ORSTRUCTURES; TESTING STRUCTURES OR APPARATUS NOT OTHERWISE PROVIDED FOR

The invention discloses a model test device and method for determining the anti-freezing length of a tunnel in a cold region. The model test device comprises a temperature control chamber and a tunnel model box placed in the temperature control chamber. The front end and the rear end of the tunnel model box are open, surrounding rocks are filled in the box body, an arched concrete lining is arranged in the surrounding rocks and located in the middle of the surrounding rocks, and the concrete lining penetrates through the surrounding rocks front and back to form a tunnel with the front end and the rear end communicated; air draft type jet fans are installed in the temperature control chamber and located at inlets of the front end and the rear end of the tunnel. An air temperature monitoring element is arranged on the jet fan and is used for monitoring the temperature of supplied air entering the tunnel; a plurality of surrounding rock temperature monitoring elements are arranged in the surrounding rock and sur