Abstract: Double- metal marks were usually used as the base point of vertical displacement measurement of dam. This article discussed the factors that affect its running, such as design and installation, and then put forward some methods for improvement and advice on structure, worthy reference to designer, construction company and equipment company.

摘要： 双金属标常作为大坝垂直位移监测的基点。文章从双金属标的设计、安装等方面分析了影响其正常工作的各个因素, 并提出了相应的完善方法, 对现有的结构提出了一些改进建议, 可供有关设计、施工单位及设备厂家参考。