Spatial-temporal exposure risk during cross operation in dam construction

doi:10.16265/j.cnki.issn1003-3033.2019.12.003

Abstract

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.

Key words: dam construction, cross operation, spatial-temporal exposure, real-time location, damage-energy process, hazard-affected process

CLC Number:

X948

ZHENG Xiazhong, ZHOU Jiali, CHEN Shu. Spatial-temporal exposure risk during cross operation in dam construction[J]. China Safety Science Journal, 2019, 29(12): 13-20.

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