Citation

Feng G, Xia Y, Wang Z, Yan M. China Saf. Sci. J. 2022; 32(3): 116-122.

Copyright

(Copyright © 2022, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2022.03.016

PMID

unavailable

Abstract

In order to effectively use information of multiple measurement points for early-warning and monitoring of slope safety in open-pit mines, considering the importance of displacement monitoring and its variation along with time of measuring points setting and slope height during mining, a dynamic warning method using integrated displacement information was proposed. Firstly, with monitoring profile as a unit, dynamic grading early warning threshold for displacement of each profile was determined through numerical simulation. Secondly, federated Kalman filter was used to integrate monitoring information of different measuring points from the same profile and obtain integrated displacement value representing timely stable state of each profile. Finally, by comparing integrated value with early warning threshold, real-time early-warning for steady state of each profile was realized. Application of the method in a limestone open-pit mine slope, located in Zhongxian county of Chongqing, shows that it can not only fully utilize information of multiple measurement points to send early warning in different regions in real-time, but also predict stability of slopes during mining process. © 2022 China Safety Science Journal. All rights reserved.

Language: zh