Comprehensive stability evaluation of tailing dam based on factor space

doi:10.16265/j.cnki.issn1003-3033.2019.12.005

Abstract

Abstract: Considering that stability of tailing dam is affected by many factors which contain unascertained information, a comprehensive stability evaluation model is proposed based on factor space. Firstly, factor space for comprehensive evaluation was constructed, and unascertained mathematical theory was introduced to establish a factor space-unascertained measurement model. Then, variable combined weights were assigned to influencing factors, and dimensionality reduction of factor space was accomplished through factor synthesis. Finally, with a tailing dam as an example, its stability was evaluated by using confidence criterion, and feasibility and applicability of proposed model were verified. The research shows that evaluation results of this model are consistent with that of field survey, and moreover risk degree ranking of influencing factors is accomplished, which can not only improve evaluation accuracy, but also provide reference for scientific stability evaluation of tailing dam.

Key words: factor space, unascertained measurement, variable weight, dimensionality reduction, confidence criterion, stability of tailing dam

CLC Number:

X936

LI Hui, YI Fu, ZHANG Jia. Comprehensive stability evaluation of tailing dam based on factor space[J]. China Safety Science Journal, 2019, 29(12): 28-34.

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