Abstract Aiming at the effect of flowing water in tunnel on freezing effect of cross passage during freezing process,
it analyzes the effect of flowing water in tunnel on the temperature of the junction between segment and soil mass and the temperature of soil mass through the data measurement and numerical simulation by taking the construction of certain cross passage of Guangzhou metro as an example. The results show that there is almost no change of the temperature of the junction between the upper segment and soil mass but the temperature of the junction between lower segment and soil mass rises obviously and the closer to the tunnel bottom the larger of the difference of average temperature under the condition of flowing water in tunnel; average temperature of the junction between segment and soil mass in the upper reaches is obviously larger than that of lower reaches under the same depth of flowing water; when the flow velocity turns larger, the average temperature of the junction between segment and soil mass rises and the effect of flow velocity on the average temperature in the lower reaches is obviously larger than that of the upper reaches; the flowing water has effect on the temperature of soil mass within 2 m depth at the back of segment in the course of freezing.
Abstract：
Aiming at the effect of flowing water in tunnel on freezing effect of cross passage during freezing process,
it analyzes the effect of flowing water in tunnel on the temperature of the junction between segment and soil mass and the temperature of soil mass through the data measurement and numerical simulation by taking the construction of certain cross passage of Guangzhou metro as an example. The results show that there is almost no change of the temperature of the junction between the upper segment and soil mass but the temperature of the junction between lower segment and soil mass rises obviously and the closer to the tunnel bottom the larger of the difference of average temperature under the condition of flowing water in tunnel; average temperature of the junction between segment and soil mass in the upper reaches is obviously larger than that of lower reaches under the same depth of flowing water; when the flow velocity turns larger, the average temperature of the junction between segment and soil mass rises and the effect of flow velocity on the average temperature in the lower reaches is obviously larger than that of the upper reaches; the flowing water has effect on the temperature of soil mass within 2 m depth at the back of segment in the course of freezing.
WANG Chengjing ZHANG Yong ZHU Chengshan HAN Xiang
.Analysis of Influence of Flowing Water in Tunnel on Freezing Effect of Cross Passage[J] MODERN TUNNELLING TECHNOLOGY, 2020,V57(4): 113-118
2020, Vol. 57 