感潮河段滨岸基坑地下水渗流特征试验研究  

Experimental Research on Groundwater Seepage Characteristics of Shore Foundation Excavation in Tidal Reach

作　　者：陈昭安 李忠周 CHEN Zhaoan;LI Zhongzhou(CCCC Road&Bridge East China Engineering Co.,Ltd.,Shanghai201210,China)

机构地区：[1]中交路桥华东工程有限公司,上海201210

出　　处：《施工技术（中英文）》2024年第8期122-125,共4页Construction Technology

摘　　要：索塔基础中的深基坑工程,因邻近大型河流修建,基坑降水是保障工程安全的一个重要环节。以感潮河段大型桥梁索塔基坑工程为研究对象,在基础完成降水点和围护桩施工后,开展试抽水试验。通过对抽水井抽水量及观测井水位变化的监测,发现由于现场支护施工且锁扣钢管桩周边存在渗流补给等,观测井水位波动不明显,给试验数据分析和处理造成了较大干扰。开展数值模拟分析,验证了该区域受潮流和地下水补给共同影响的推断。The deep foundation excavation project in the cable tower foundation,because it is built near large rivers,foundation excavation dewatering is an important link to ensure the safety of the project.Taking the foundation excavation project of large bridge cable tower close to the tidal reach as the object,the trial pumping test is carried out after the foundation dewatering point and retaining pile construction are completed.Through the monitoring of the water extraction of the dewatering well and the water level changing of the observation well,it is found that due to the on-site support construction and the seepage supply around the locking steel pipe pile,the water level fluctuation of the observation well is not obvious,which has caused great interference to the analysis and processing of the experimental data.The numerical simulation is carried out,the inference that the area is jointly affected by tidal current and groundwater recharge is verified.

关 键 词：基坑 抽水 试验 渗流 水位 监测 

分 类 号：TU753[建筑科学—建筑技术科学]