Displacement monitoring and analysis of Taipingwan dam based on vacuum laser collimation system

Yongjin Cheng; Pingzhi Chen; Aiwu Cao; Gaofeng Lv

doi:10.1117/12.3019431

23 January 2024 Displacement monitoring and analysis of Taipingwan dam based on vacuum laser collimation system

Yongjin Cheng, Pingzhi Chen, Aiwu Cao, Gaofeng Lv

Proceedings Volume 12978, Fourth International Conference on Geology, Mapping, and Remote Sensing (ICGMRS 2023); 1297810 (2024) https://doi.org/10.1117/12.3019431
Event: 2023 4th International Conference on Geology, Mapping and Remote Sensing (ICGMRS 2023), 2023, wuhan, China

Abstract

The stability and safety of a concrete dam are important for hydropower projects. Before analyzing the stability of the dam, it is crucial to collect monitoring data like dam stress, uplifting pressure and dam displacement. In Taipingwan hydropower dam, the vacuum laser collimation system has been applied to monitor the vertical and horizontal displacement on the dam top respectively. According to the displacement monitoring results collected from last 10 years, several conclusions are drawn: there have been no abnormal deformations on the dam body. The long series of measured results show that the vertical and horizontal displacement of the dam changes regularly and periodically. In general, the vertical displacement change of the overflow dam section was basically synchronized with the air temperature. The right bank of the 0# dam section is connected to the mountain, and the displacement change is very small with the annual variation for several years less than 0.7mm. The suggestion for the fifth regular safety assessment is that detailed numerical simulation might be needed to find how the high uplifting pressure influencing the dam stability.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Yongjin Cheng, Pingzhi Chen, Aiwu Cao, and Gaofeng Lv "Displacement monitoring and analysis of Taipingwan dam based on vacuum laser collimation system", Proc. SPIE 12978, Fourth International Conference on Geology, Mapping, and Remote Sensing (ICGMRS 2023), 1297810 (23 January 2024); https://doi.org/10.1117/12.3019431

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