岩土力学2026，Vol.47Issue(1)：267-280,14.DOI:10.16285/j.rsm.2025.0095
基于边界字典-随机森林模型的三维岩土地层重构方法
Three-dimensional geotechnical stratigraphy reconstruction method based on boundary dictionary-random forest model
摘要
Abstract
Prior to geotechnical design and construction,it is quite necessary to thoroughly understand the geological conditions of the project site to ensure the safe operation of the project during subsequent stages.Reconstructing the three-dimensional geotechnical stratigraphy provides an effective approach for accurately understanding the geological conditions of the project site.Due to the complexity of geological structure spatial characteristics and the sparsity of site exploration data,it is difficult for traditional methods to reveal the boundary patterns and spatial distribution characteristics between different strata based on a small amount of site exploration data.Reconstruction of the three-dimensional stratigraphy based on limited site exploration data still faces considerable challenges.To address this problem,a series of three-dimensional distance field features is used to characterize the potential boundary characteristics between strata.This paper introduces the feature selection process of the distance field and proposes a three-dimensional stratigraphic reconstruction method based on a boundary dictionary-random forest(BD-RF)model.The effectiveness of the proposed method is validated through two engineering cases.The results indicate that the proposed method,by employing a series of three-dimensional distance field features,can effectively capture the stratigraphic distribution patterns revealed by drilling data.Compared with other methods,the proposed method has significant advantages in predicting the boundary characteristics between different strata,providing an effective analytical tool for reconstructing three-dimensional geotechnical models based on limited drilling data in practical engineering applications.关键词
三维地层重构/地层边界/距离场特征/随机森林/边界字典Key words
three-dimensional stratigraphy reconstruction/stratigraphic boundary/distance field feature/random forest/boundary dictionary分类
建筑与水利引用本文复制引用
蒋水华,钟越,谢佳伟,吕胜才,周安楠,黄劲松..基于边界字典-随机森林模型的三维岩土地层重构方法[J].岩土力学,2026,47(1):267-280,14.基金项目
国家自然科学基金项目(No.52579103,No.52222905,No.42272326) （No.52579103,No.52222905,No.42272326）
江西省自然科学基金项目(No.20253BDH410009,No.20252BCG330025,No.20242BAB24001). This work was supported by the National Natural Science Foundation of China(52579103,52222905,42272326)and Jiangxi Provincial Natural Science Foundation(20253BDH410009,20252BCG330025,20242BAB24001). （No.20253BDH410009,No.20252BCG330025,No.20242BAB24001）
