Seite - 1391 - in Book of Full Papers - Symposium Hydro Engineering

COMMISSION INTERNATIONALE DES GRANDS BARRAGES ------- VINGT-SIXIÈME CONGRÈS DES GRANDS BARRAGES Autriche, juillet 2018 ------- FEATURES OF MONITORING TEMPERATURE OF AN RCC DAM DURING CONSTRUCTION BASED ON DATA MINING Jianwen PAN Assistant Professor in Department of Hydraulic Engineering, TSINGHUA UNIVERSITY CHINA Jinting WANG Professor in Department of Hydraulic Engineering, TSINGHUA UNIVERSITY CHINA 1. ABSTRACT A deep understanding of concrete temperature varying in large concrete dams is of importance for improvement of construction technology. A large number of temperature sensors are installed in the dam blocks as concrete pouring. The temperature of the dam concrete, which increases due to hydration heat in the early stage and decreases when employing water-cooling system, is measured and massive temperature data is stored. The monitoring temperature history varies as time and its changes are affected by many factors, such as the hydration heat temperature rise, the amount and velocity of water flows in the cooling system, environmental temperature, etc. Features of the monitoring temperature may provide insight into possible prevention of temperature-induced cracks in concrete dams. In this paper, the features of the monitoring temperature data of a roller compacted concrete (RCC) dam (height 203 m), under construction in Yunnan 1391