抽水试验在大型跨江海悬索桥锚碇勘察中的应用  

Application of Pumping Test in Anchorage Investigation of Large-scale Suspension Bridge Across Riversand Seas

作　　者：陈文龙 陈进锋 CHEN Wen-long;CHEN Jin-feng(CCCC Highway Consultants Co.,Ltd.,Beijing 100010,China)

机构地区：[1]中交公路规划设计院有限公司,北京100010

出　　处：《价值工程》2024年第19期108-110,共3页Value Engineering

摘　　要：大型跨江海通道等超大规模工程中深大基坑降水问题是目前工程建设中的重难点,文章结合大型跨江海悬索桥锚碇区潜水层、承压水层两层含水层特点,分别布设观测线开展抽水试验,正式抽水前通过观测潮汐作用下地下水位、长江水位,分析两者之间的关系,从而选取合理的静止水位正式开展抽水试验,最后通过本次抽水试验计算出的水文地质参数进行分析,从而为锚碇基坑降水方案设计提供安全可靠的水文地质参数。Dewatering of deep and large foundation pits in super-large-scale projects,such as large-scale river-crossing channels,is a major and difficult problem in current engineering construction.Based on the characteristics of two aquifers in the anchorage area of large-scale river-crossing suspension bridge,observation lines are respectively laid to carry out pumping tests.Before formal pumping,the relationship between them is analyzed by observing the groundwater level and the Yangtze River level under the action of tides,so as to select a reasonable static water level to formally carry out pumping tests.Finally,the hydrogeological parameters calculated by this pumping test are analyzed,so as to serve as anchors.

关 键 词：抽水试验 锚碇 稳定流 非稳定流 潮汐 

分 类 号：U442.2[建筑科学—桥梁与隧道工程]