Experimental study of mudrush mechanisms under different moisture contents in block caving

Mud-rush mechanisms during ore extraction have not been fully studied. In this study, a new experimental setup was created to analyse mud-rush events under controlled conditions. A block caving drawbell was scaled and filled with wet granular material to be extracted. The material drawn was then cla...

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Bibliographic Details
Published in:International journal of mining, reclamation and environment reclamation and environment, 2023-04, Vol.37 (4), p.243-254
Main Authors: Castro, R, Betancourt, F, Gómez, R, Salas, O, Zarabia, J
Format: Article
Language:English
Subjects:
Caving
Consistency
consistency index
Controlled conditions
Granular materials
Moisture effects
Mud
mud-rush
underground mining
Yield stress
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Summary:Mud-rush mechanisms during ore extraction have not been fully studied. In this study, a new experimental setup was created to analyse mud-rush events under controlled conditions. A block caving drawbell was scaled and filled with wet granular material to be extracted. The material drawn was then classified based on its consistency index. The results showed that the yield stress and the material consistency are good predictors of mud events in the experimental results. Finally, mud-rush events occurred mainly when material consistency was classified as plastic, soft, or fluid - with soft and fluid being the most significant.
ISSN:1748-0930
1748-0949
DOI:10.1080/17480930.2023.2166761