Research on Water Cooling Optimization of Temperature Control for High RCC Dam

DOI

10.2991/smont-19.2019.30How to use a DOI?

Keywords

roller compacted concrete; optimization of temperature control; anti-cracking temperature control; and simulation calculation

Abstract

In the mid- to late-stage construction of Roller Compacted Concrete (RCC) dams, once the concrete pouring breaks away from foundation constraint zone, the existing temperature control criteria and measures still have room for optimization. This paper takes a RCC dam under construction as research object and focuses on the feasibility of cancelling or simplifying water cooling measure to control concrete temperature, in order to ensure construction quality while shortening construction period and saving investment. Our temperature control tracking and simulation calculation shows that breaking away from foundation constraint zone may allow widening the gap between water cooling pipes. But because the transformation zone near the upstream and the rolled impervious layer have no separate zone for concrete temperature control, widening the gap needs such measures as control of pouring temperature and increasing water flow so that the maximum temperature can be controlled within the design specification. Therefore, to facilitate the construction control, it is not recommended to adjust the gap between the water cooling pipes. In addition, it is suggested to do well in surface protection, insulation and maintenance, and provide accurate forecast and warning of rainfalls and cold wave. By doing so, the effect of single-point rainstorm and cold wave can be minimized. Furthermore, be sure to ensure the continuous pouring for the dam sections.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Lei Zhang
AU  - Bingqi Li
AU  - Songtao Peng
AU  - Dezhi Tian
AU  - Jian Yang
PY  - 2019/04
DA  - 2019/04
TI  - Research on Water Cooling Optimization of Temperature Control for High RCC Dam
BT  - Proceedings of the 2019 International Conference on Modeling, Simulation, Optimization and Numerical Techniques (SMONT 2019)
PB  - Atlantis Press
SP  - 136
EP  - 139
SN  - 1951-6851
UR  - https://doi.org/10.2991/smont-19.2019.30
DO  - 10.2991/smont-19.2019.30
ID  - Zhang2019/04
ER  -