地铁上盖土方开挖施工及水位动态控制技术  

EXCAVATION CONSTRUCTION AND WATER LEVEL DYNAMIC CONTROL TECHNOLOGY FOR SUBWAY COVER EARTHWORK

作　　者：桂智乐 邓世林 李靖 Gui Zhi-le;Deng Shi-lin;Li Jing

机构地区：[1]中建二局第三建筑工程有限公司,北京100070

出　　处：《建筑技术开发》2025年第2期105-108,共4页Building Technology Development

基　　金：中建二局三公司课题-既有地铁隧道上基坑土方开挖过程中水位及荷载动态平衡控制技术(CSCEC2b3 c-2024ZC088)。

摘　　要：某工程地铁上盖结构施工,研究通过降水井降水试验,分析了该既有地铁上部结构施工区域现有地下水位、渗漏系数、降水影响半径等参数;进而确定了现场降水井直径以及降水井与降水井之间设置间距要求,施工过程中的水位标高动态控制要求等,分析了上盖结构土方开挖施工过程中的要点和重点施工保护措施,形成了一套完整的分析方法和控制措施,以实现提高质量、降本增效的目标。The construction of the upper structure of a certain subway project was studied,and the existing parameters such as groundwater level,leakage coefficient,and precipitation influence radius in the construction area of the upper structure of the existing subway were analyzed through precipitation well precipitation tests;Furthermore,the diameter of the on-site dewatering well,the spacing requirements between dewatering wells,and the dynamic control requirements for water level elevation during the construction process were determined.The key points and key construction protection measures during the excavation of the overlying structure were analyzed,and a complete set of analysis methods and control measures were formed to achieve the goal of improving quality,reducing costs,and increasing efficiency.

关 键 词：自平衡试桩法 桩基承载力 优势分析 

分 类 号：TU74[建筑科学—建筑技术科学]