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A method of spatio-temporal interpolation on abnormal deformation monitoring data considering point change in mine slope

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Abstract

Under the influence of various internal and external factors, the monitoring points are often damaged and abnormal data may occur in the slope deformation monitoring of open-pit mines, which may lead to the deviation of slope stability analysis and errors in slope construction scheme and the prevention and control decision. In order to improve the reliability of slope stability analysis and ensure the safe production and management of mines, it is necessary to correct the abnormal data of deformation monitoring. Taking the slope of Yuebao open-pit mine as the research object, based on the anomaly detection of slope deformation monitoring data, this paper puts forward a spatio-temporal interpolation method of slope deformation monitoring abnormal data considering the change of monitoring point position to correct and interpolate of abnormal data. The experimental results showed that the more uniform the distribution of sample points was, the higher the fitting accuracy of the coordinates of the points to be inserted was, and the Root Mean Square Error (RMSE) of distance increased from 2.56 to 2.17 mm. The uniform distribution of sample points and the change of the spatial distance between the points to be inserted and the sample points had little influence on the degree of fitting the coordinates of the points to be inserted, and the distance RMSE was basically maintained at about 2.2 mm. With the increase of the distance, the interpolation coordinates were closer to the actual values. Compared with Lagrange interpolation and inverse distance weighted interpolation method, the results were more consistent with the real values by the proposed method, and the accuracy is 4–5 times that of the other two methods, proving the feasibility and reliability of the proposed method.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (No. 42171437), Jiangxi Provincial Natural Science Foundation (No. 20212BAB204030), and the high level talents research start-up project of Jiangxi University of Science and Technology (No. jxxjbs19032). The authors would also like to thank the anonymous reviewers for their comments and suggestions.

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Correspondence to Haiping Xiao.

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The authors declare no competing interests.

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Responsible Editor: Zeynal Abiddin Erguler

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Chen, L., Xiao, H., Xia, Y. et al. A method of spatio-temporal interpolation on abnormal deformation monitoring data considering point change in mine slope. Arab J Geosci 15, 1294 (2022). https://doi.org/10.1007/s12517-022-10518-3

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  • DOI: https://doi.org/10.1007/s12517-022-10518-3

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