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http://dx.doi.org/10.12989/gae.2022.30.2.107

Decision support system for underground coal pillar stability using unsupervised and supervised machine learning approaches  

Kamran, Muhammad (Bandung Institute of Technology)
Shahani, Niaz Muhammad (School of Mines, China University of Mining and Technology)
Armaghani, Danial Jahed (Department of Urban Planning, Engineering Networks and Systems, Institute of Architecture and Construction, South Ural State University)
Publication Information
Geomechanics and Engineering / v.30, no.2, 2022 , pp. 107-121 More about this Journal
Abstract
Coal pillar assessment is of broad importance to underground engineering structure, as the pillar failure can lead to enormous disasters. Because of the highly non-linear correlation between the pillar failure and its influential attributes, conventional forecasting techniques cannot generate accurate outcomes. To approximate the complex behavior of coal pillar, this paper elucidates a new idea to forecast the underground coal pillar stability using combined unsupervised-supervised learning. In order to build a database of the study, a total of 90 patterns of pillar cases were collected from authentic engineering structures. A state-of-the art feature depletion method, t-distribution symmetric neighbor embedding (t-SNE) has been employed to reduce significance of actual data features. Consequently, an unsupervised machine learning technique K-mean clustering was followed to reassign the t-SNE dimensionality reduced data in order to compute the relative class of coal pillar cases. Following that, the reassign dataset was divided into two parts: 70 percent for training dataset and 30 percent for testing dataset, respectively. The accuracy of the predicted data was then examined using support vector classifier (SVC) model performance measures such as precision, recall, and f1-score. As a result, the proposed model can be employed for properly predicting the pillar failure class in a variety of underground rock engineering projects.
Keywords
coal pillar; K-mean clustering; SVC; t-SNE; underground structures;
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Times Cited By KSCI : 5  (Citation Analysis)
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