灰岩区地铁修建技术的设计与思考

Design and Thinking of Metro Construction Technology in Limestone Area

随着城市开发进程的推进,地铁修建将面临越来越多的复杂周边环境和地质条件的限制,而灰岩地区具有岩溶发育,地下水丰富等特性,对地铁车站基坑开挖、主体结构的施工有较大影响。本文以广州地铁八号线北延段工程某灰岩区地铁车站为例,分析了基坑围护结构设计方案以及相关风险防控措施,并通过工程监测数据验证设计方案的安全性,为类似工程提供了参考和借鉴。

With the progress of urban development,the construction of metro will face increasingly constraints of complex surroundings and geological conditions,while the limestone area has karst development,groundwater abundance and other characteristics,which have great influence on the excavation of foundation pit and construction of main structure of metro station.Taking a station in limestone area at the northern extension segment of Line 8 of Guangzhou Metro as an example,this paper analyzes the design plan of foundation pit enclosure and related risk prevention and control measures.It also provides a reference for similar projects by verifying the safety of design scheme through engineering monitoring data.