About the author:

China Railway Electrification Bureau Group Co., Ltd., Beijing 100036, China

Abstract:

Taking the end launching project of Louzhong Road Station of Suzhou Metro Line 8 as anexample, the freezing method is used to solve the problem of poor self⁃stability of confined water and soil,and to prevent the risk of terminal collapse,water gushing, and sand gushing. The construction processof the freezing method and the possible disaster control measures and effects under the condition offreezing initiation are analyzed in detail. In the construction, to deal with the accident and disaster,double liquid slurry is injected into the enclosure area for reinforcement so that the cumulative settlementis effectively controlled, and the maximum settlement is 11mm. In addition, the excessive soil strengthcaused by too long freezing time and the inappropriate shield tunneling parameters are the main reasonsfor the over⁃excavation at the end of Louzhong Road Station.