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Real time thermal field analysis on Wudongde super high arch dam during construction

2019-07-12

Peng H, Lin P, Yang N, Li M, Qiao Y (2019) Real time thermal field analysis on Wudongde super high arch dam during construction. Global Energy Interconnection, 2(3): 264-269

彭浩洋，林鹏，杨宁，李明，乔雨（2019）乌东德超高坝的实时热场分析. 全球能源互联网（英文），2(3): 264-269

Authors：Haoyang Peng1，Peng Lin1，Ning Yang2，Ming Li1，Yu Qiao2

Institution：1.Department of Hydraulic Engineering, Tsinghua University, Beijing 100084, P.R. China；2.China Three Gorges Corporation, No.1 Yuyuantan South Road, Haidian District, Beijing 100038,P.R. China

Acknowledgements：This work was supported by National Basic Research Program of China (973 Program) Grant No. 2011CB013503 and China Three Gorges Corporation research project (Contract number: WDD/0490).

Biographies

Haoyang Peng

received his bachelor degree in 2013 from Sichuan University. He is currently pursuing his Ph.D. degree of Hydraulic Engineering in Tsinghua University, Beijing, China. His research interest in high dam cracking mechanism and control, the evolution law of dam thermal field.

Peng Lin

received his bachelor, master and Ph.D. in Northeastern University, in 1995, 1998 and 2002, respectively. He became a professor of Department of Hydraulic Engineering at Tsinghua University in 2014. He is a member of the editorial board “Rock mechanics and rock engineering”. His research interest in dam intelligent construction and cracking control, overall stability of dam-foundation.

Ning Yang

received his bachelor degree in 2009 from China Three Gorges University. In 2011, he received his master degree from Wuhan University. He is currently working at China Three Gorges Corporation. His research interest in dam construction and management.

Ming Li

received his bachelor degree in 2019 from Tsinghua University. He is currently pursuing his Ph.D. degree of Hydraulic Engineering in Tsinghua University. His research interest in the evolution law of dam thermal field and data mining.

Yu Qiao

received his bachelor and master in China Three Gorges University in 2014 and 2017, respectively. He is currently working at China Three Gorges Corporation. His research interest in dam construction and management.

Real time thermal field analysis on Wudongde super high arch dam during construction

乌东德超高坝的实时热场分析

Abstract

During concrete dam construction, concrete temperature monitoring and control is key to ensuring dam concrete quality and construction safety. In this study, a 2D thermal field restructuring method relating to the Kriging temperature interpolation is proposed. Based on dam site monitoring data of distributed optical fiber, the results indicated that the proposed restructuring method can be applied to effectively and quickly obtain 2D real thermal field. The evolution law of thermal field in early ages and temperature differences of concrete blocks based on the thermal field data are obtained. It also can be concluded that the proposed restructuring method could help obtain accurate and reliable restructuring monitoring data.

Keywords

2D thermal field, Restructuring method, Distributed optical fiber, Kriging, Concrete dam.

Fig.1 Typical monoliths embedded with distributed optical fiber at WDD dam

Fig.2 Schematic diagram of DTS system

Fig.3 The 2D thermal fields of the 7#-0046 concrete block during 28 d ages

Fig.4 The zones of concrete block and thermometers distribution

Fig.5 The temperature difference in the concrete block calculated based on the thermal field and thermometer data