坝顶实测水平位移, 混凝土重力坝, 调研, 监测资料分析

The measured horizontal displacement of the dam crest is an important monitoring item for the concrete gravity dam, which reflects the actual operation behavior of the dam most intuitively. The author studies the main concrete gravity dams in domestic power industry, then analyzes the magnitude, the general variation and distribution laws and the main influence factors of the measured horizontal displacement of each dam crest. Besides, the proportion of water pressure component and temperature component in the measured horizontal displacement of dam crest has been studied. The results show that for low dams and medium dams, the temperature influence usually dominates, and as regards high dams, the water pressure usually dominates. This study can provide some reference for monitoring data analysis and safety evaluation of concrete gravity dams.

measured horizontal displacement of dam crest, concrete gravity dam, investigation, monitoring data analysis