Research on Construction Method for Prevention and Control of Water and Sand Gushing in Subway Station Foundation Pit
The underground continuous wall in subway station foundation pit has the phenomenon of water seepage and leakage,which should be treated in time to limit the occurrence of water and sand gushing and ensure the construction safety.Taking a bid section of Baiyun Station in Guangzhou as an example,this paper expounds the emergency treatment construction methods for slight and severe leakage of underground continuous wall joints,as well as two grouting construction technologies of high-pressure chemical grouting plugging construction and deep hole grouting construction to control water and sand gushing.The research results show that the construction methods and technologies for water and sand gushing treatment adopted in a bid section of Baiyun Station in Guangzhou solve the problem of water and sand gushing in time and effectively ensure the safety and progress of foundation pit construction.
subway stationsurface subsidencefoundation pit leakagewater and sand gushing
NETL
NSTL
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