应力松弛作用下地下矿山采场稳定性评价

IF 1.8 Q3 MINING & MINERAL PROCESSING
A. Adoko, J. Vallejos, R. Trueman
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引用次数: 9

摘要

应力松弛在地下采场设计中起着重要的作用。本文的目的是用一种分类方法来评价与应力松弛有关的采场稳定性。明确了应力松弛的三种类型,即部分松弛、切向松弛和完全松弛。采用神经网络分类器对采场的稳定性进行评价。将分类结果与现有的应力松弛量化经验方法进行了比较。总的来说,本研究显示出较高的分类精度,特别是在考虑应力松弛的情况下。结果表明,松弛类型可以很好地预测稳定性。松弛采场(全应力松弛和切向应力松弛)情况是最关键的,因为获得的精度较低,正确分类的概率相当不稳定。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Stability assessment of underground mine stopes subjected to stress relaxation
ABSTRACT 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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CiteScore
2.20
自引率
9.10%
发文量
5
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