Citation

Zheng X, Zhou J, Chen S. China Saf. Sci. J. 2019; 29(12): 13-20.

Copyright

(Copyright © 2019, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2019.12.003

PMID

unavailable

Abstract

In order to study spatial-temporal exposure risks during cross operation in dam construction, firstly, disaster-causing situations of risk exposure were analyzed and dam construction processes were decomposed. Then, impact space of damage-energy processes and work space of hazard-affected processes were defined and a quantification model was proposed based on time distribution characteristics during cross operation and real-time location information of construction processes. Finally, with a hydropower station in southwest China as an example, simulation of construction processes in dam pouring was performed to determine duration and frequency of spatial-temporal exposure. The results show that total spatial-temporal exposure duration is 1 905 s while exposure frequency is 16. 85%, and risks are mainly from damage-energy processes, including horizontal deceleration and downward transportation with heavy-load, upward and horizontal acceleration transportation with no-load. © 2019 China Safety Science Journal. All rights reserved.

Language: zh