TY - JOUR
T1 - Stability assessment of underground mine stopes subjected to stress relaxation
AU - Adoko, Amoussou Coffi
AU - Vallejos, Javier
AU - Trueman, Robert
N1 - Publisher Copyright:
© 2020, © 2020 Institute of Materials, Minerals and Mining and The AusIMM Published by Taylor & Francis on behalf of the Institute and The AusIMM.
PY - 2020/1/2
Y1 - 2020/1/2
N2 - Stress relaxation plays an important role in the design of underground stopes. The aim of this paper is to assess the stope stability in connection with the stress relaxation using a classification approach. Three types of stress relaxation were clearly defined, namely partial relaxation, tangential relaxation and full relaxation. A neural network classifier was implemented to assess the stability of the stopes on the basis of case histories of stope performances. The results of the classification were compared to existing empirical methods of quantifying the stress relaxation. Overall, the present study shows higher classification accuracies, especially when the stress relaxation was considered. The results suggested that the relaxation type can be a good predictor of stability. Relaxed stope (full and tangential stress relaxation) cases are the most critical in the sense that lower accuracies were obtained and the probability of correct classification is rather erratic.
AB - Stress relaxation plays an important role in the design of underground stopes. The aim of this paper is to assess the stope stability in connection with the stress relaxation using a classification approach. Three types of stress relaxation were clearly defined, namely partial relaxation, tangential relaxation and full relaxation. A neural network classifier was implemented to assess the stability of the stopes on the basis of case histories of stope performances. The results of the classification were compared to existing empirical methods of quantifying the stress relaxation. Overall, the present study shows higher classification accuracies, especially when the stress relaxation was considered. The results suggested that the relaxation type can be a good predictor of stability. Relaxed stope (full and tangential stress relaxation) cases are the most critical in the sense that lower accuracies were obtained and the probability of correct classification is rather erratic.
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U2 - 10.1080/25726668.2020.1721995
DO - 10.1080/25726668.2020.1721995
M3 - Article
AN - SCOPUS:85078897652
SN - 2572-6668
VL - 129
SP - 30
EP - 39
JO - Mining Technology: Transactions of the Institute of Mining and Metallurgy
JF - Mining Technology: Transactions of the Institute of Mining and Metallurgy
IS - 1
ER -