高拱坝, 谷幅变形, 激光自动测距

Valley amplitude and chord deformation monitoring is an important means of dam safety monitoring. In view of the current situation of valley amplitude and chord monitoring, combined with the particularity of application scenarios with high altitude and large temperature difference, a full-automatic and all-weather valley amplitude and chord monitoring system is developed by integrating laser ranging and Internet of Things. It has been applied to the Longyangxia and Lijiaxia dams in the upper reaches of Yellow River. At the same time, the main influencing factors of laser ranging accuracy are analyzed based on the monitoring data, and the calculation method of laser distance influenced by air temperature and pressure is established. Through observation data and system stability calculation, the stability and adaptability of the system are verified.

high arch dam, valley amplitude deformation, automatic laser ranging