Abstract：The anti-freezing design of tunnel in cold region is controlled by the surrounding temperature field, and the thermal parameters of tunnel surrounding rock have a direct influence on the distribution of temperature field. In this paper, based on a cold highway operation tunnel, the distribution of temperature field of tunnel in cold region and the sensitivity of thermal parameters of surrounding rock are systematically studied by three methods of field measurement, numerical simulation and theoretical deduction. Firstly, the accuracy of finite element analysis is verified by comparing the results of finite element calculation and field monitoring data. Then, based on the sensitivity analysis method, the sensitivity of the three factors of the thermal conductivity, the specific heat capacity and the occurrence temperature of the surrounding rock to the temperature field in the cold region tunnel is analyzed by using the finite element method. The results show that the sensitivity of the three factors is obviously different, and the occurrence temperature is the most sensitive parameter affecting the temperature field of the tunnel. The results of research can provide reference for site selection of tunnel in cold region and anti-freezing design of similar engineering.
李思 孙克国 仇文革 许炜萍 李利平. #br#
寒区隧道温度场的围岩热学参数影响及敏感性分析[J]. 土木工程学报, 2017, 50(S1): 117-122.
Li Si Sun Keguo Qiu Wenge Xu Weiping Li Liping. Influence and sensitivity analysis of surrounding rock thermal parameters on temperature field of cold region tunnel. 土木工程学报, 2017, 50(S1): 117-122.
