Citation

Wu X, Liu J. China Saf. Sci. J. 2020; 30(2): 127-132.

Copyright

(Copyright © 2020, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2020.02.020

PMID

unavailable

Abstract

In order to solve the problem that grade and importance of dams are not considered in monitoring index of dam deformation, firstly, finite element strength reduction method was used to establish relationship between anti-sliding safety coefficient and stream and downstream water levels of face rockfill dams. The latter were obtained based on safety factor of dam slope which was determined by dam grade and importance, and hydraulic pressure displacement of dams was calculated. Secondly, three-parameter rheological model of rockfill material was used to calculate time-dependent displacement of dams according to construction process, water storage and operation plan. Finally, with a face rockfill dam as an example, first-level monitoring index for dam deformation was drawn up. The results show that the proposed method based on safety factor can make up for defects of conventional analysis method which lacks consideration of dam grade and importance, and it can improve theory and practical method for drawing up monitoring index for deformation of earth-rock dams. © 2020 China Safety Science Journal. All rights reserved.

Language: zh