地铁侧深大基坑的深井降水对地铁及周围环境的安全至关重要,为提供基坑围护设计所需要的真实水文参数,合理优化围护设计方案及确保方案可靠安全,设计并组织实施了单井的承压水抽水试验。介绍了试验井的布设方法、观测方案、抽水试验和水文地质参数计算等,可提供围护设计参考使用。 The deep well dewatering of the deep foundation pit on the subway side is crucial to the safety of the subway and the surrounding environment. In order to provide the real hydrological parameters required for the design of the foundation pit envelope, rationalize the envelope design and ensure the reliability and safety of the project, design and organize the implementation Single-well pressure water pumping test. Introduced the test well layout method, observation program, pumping test and calculation of hydrogeological parameters, etc., can provide reference for the use of enclosure design.