Abstract
Traditional machine learning models have mainly been used to study geological logging data of a single sample point, ignoring the fact that logging data has a strong spatial correlation. In this study, we use convolutional neural network to extract single-point features, structural features, and multidimensional features from logging data and compare the identification effects of lithology identification models based on the three features. The identification model based on the multidimensional feature extraction achieves 77.94% correctness in the test set, which is the best result among the identification models based on CNN and the three machine learning models. Based on this feature extraction model, the feature fusion modules in U-net and feature pyramid are added respectively to build two feature fusion models to combine the features extracted from different convolutional layers and improve the effectiveness of the model. The model also introduces attention mechanism to improve the role of useful features in the model training process. The identification accuracy of the two feature fusion models, U-CNN and P-CNN, reached 79.67% and 80.02% on the test set, respectively, which verified the effectiveness of the feature fusion models for lithology identification in the study area.
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Funding
This work was supported by: Guizhou Provincial Science and Technology Plan Project "Promotion of digital exploration and development technology for mineral resources" QianKeHeChengGuo [2022] ZD 003); Guizhou Provincial Science and Technology Plan Project "Research and demonstration on metallogenic law of phosphorus, manganese and aluminum advantageous resources and rapid, efficient and intelligent exploration technology in Guizhou " QianKeHeZhanLue [2022] ZD 003); The central government guided the local science and Technology Development Fund Project "Research and development base of deep prediction and exploration technology of manganese resources" QiankeZhongyingdi[2021]4027; Guizhou high-level Innovative Talents Project QianKeHePingTingRenCai [2020]6019); China national uranium Co. Ltd project “Digital uranium exploration system”.
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Zhang XiaLin writing original draft and experiment Validation.Sun Qing completed data curation and formal analysis.Wang ZhenJiang, Zhang LuYi and Liang Peng carried out visualization.Wen JinJun completed conceptualization, methodology design and writing review & editing.All authors reviewed the manuscript.
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Communicated by: Xiang Que
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Zhang, X., Wen, J., Sun, Q. et al. Lithology identification technology of logging data based on deep learning model. Earth Sci Inform 16, 2545–2557 (2023). https://doi.org/10.1007/s12145-023-01051-2
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DOI: https://doi.org/10.1007/s12145-023-01051-2