Citation

Li J, Hu B, Liu Y, Cui A. China Saf. Sci. J. 2021; 31(3): 60-65.

Copyright

(Copyright © 2021, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2021.03.009

PMID

unavailable

Abstract

In order to determine comprehensively bolt support effect of mining roadway under influence of various factors,an improved catastrophe progression method was proposed to evaluate supporting effect of bolts in mining roadway. Firstly, based on multi-layer decomposition of factors affecting roadway bolt support effect, index importance ranking problem in catastrophe progression method was improved by dispersion maximization method. Then, evaluation model of bolt support effect based on improved mutation progression method was constructed, and evaluation series of roadway bolt support effect was calculated. Finally, feasibility and reliability of model were confirmed by evaluating effect of roadway bolt support on 20 samples and verifying by numerical simulation. The results show that improved catastrophe progression method considers relative importance of each index. Evaluation results are accurate, which provides a new method for evaluation of bolt support effect. © 2021 China Safety Science Journal

Language: zh