Development of an Ensemble Intelligent Model for Assessing the Strength of Cemented Paste Backfill

Cemented paste backfill (CPB) is an eco-friendly composite containing mine waste or tailings and has been widely used as construction materials in underground stopes. In the field, the uniaxial compressive strength (UCS) of CPB is critical as it is closely related to the stability of stopes. Predict...

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Bibliographic Details
Published in:Advances in civil engineering 2020, Vol.2020 (2020), p.1-6
Main Authors: Sun, Junbo, Zhang, Junfei, Li, Guichen, Sun, Yuantian, Xu, Jiahui
Format: Article
Language:English
Subjects:
Algorithms
Artificial intelligence
Backfill
Cement
Cementing
Civil engineering
Compressive strength
Construction materials
Correlation coefficients
Datasets
Expected values
Machine learning
Mathematical models
Mine wastes
Optimization
Support vector machines
Underground construction
Variables
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Summary:Cemented paste backfill (CPB) is an eco-friendly composite containing mine waste or tailings and has been widely used as construction materials in underground stopes. In the field, the uniaxial compressive strength (UCS) of CPB is critical as it is closely related to the stability of stopes. Predicting the UCS of CPB using traditional mathematical models is far from being satisfactory due to the highly nonlinear relationships between the UCS and a large number of influencing variables. To solve this problem, this study uses a support vector machine (SVM) to predict the UCS of CPB. The hyperparameters of the SVM model are tuned using the beetle antennae search (BAS) algorithm; then, the model is called BSVM. The BSVM is then trained on a dataset collected from the experimental results. To explain the importance of each input variable on the UCS of CPB, the variable importance is obtained using a sensitivity study with the BSVM as the objective function. The results show that the proposed BSVM has high prediction accuracy on the test set with a high correlation coefficient (0.97) and low root-mean-square error (0.27 MPa). The proposed model can guide the design of CPB during mining.
ISSN:1687-8086
1687-8094
DOI:10.1155/2020/1643529