东北大学学报:自然科学版 ›› 2019, Vol. 40 ›› Issue (9): 1337-1342.DOI: 10.12068/j.issn.1005-3026.2019.09.021

• 资源与土木工程 • 上一篇    下一篇

基于机器学习的钻孔数据隐式三维地质建模方法

郭甲腾, 刘寅贺, 韩英夫, 王徐磊   

  1. (东北大学 资源与土木工程学院, 辽宁 沈阳110819)
  • 收稿日期:2018-09-19 修回日期:2018-09-19 出版日期:2019-09-15 发布日期:2019-09-17
  • 通讯作者: 郭甲腾
  • 作者简介:郭甲腾(1980-),男,安徽桐城人,东北大学副教授.
  • 基金资助:
    国家自然科学基金资助项目(41671404); 国家级大学生创新创业训练计划资助项目(201810145060); 中央高校基本科研业务费专项资金资助项目(N170104019); 中国地质调查局智能地质调查支撑平台建设项目(DD20160355).

Implicit 3D Geological Modeling Method for Borehole Data Based on Machine Learning

GUO Jia-teng, LIU Yin-he, HAN Ying-fu, WANG Xu-lei   

  1. School of Resources & Civil Engineering, Northeastern University, Shenyang 110819, China.
  • Received:2018-09-19 Revised:2018-09-19 Online:2019-09-15 Published:2019-09-17
  • Contact: GUO Jia-teng
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摘要: 针对基于钻孔数据的传统显式三维地质建模方法存在过程繁琐、模型质量难以保证等缺点,本文提出了一种基于机器学习的隐式三维地质建模方法,将地层三维建模问题转换为地下空间栅格单元的属性分类问题.分别基于支持向量机、BP神经网络等分类算法,实现了钻孔数据的自动三维地质建模.实际建模结果表明,对于有限、稀疏的钻孔数据,支持向量机方法建模准确率较高,建模效率、效果优于显式建模方法.最后通过敏感性分析研究了超参数对建模结果准确率、模型形态的影响,为可控的自动三维地质建模提供了一种新的解决思路.

关键词: 机器学习, 支持向量机, 三维地质建模, 隐式建模, 钻孔数据

Abstract: Considering the complex modeling process and difficulty in guaranteeing the model quality of traditional explicit 3D modeling methods, an implicit 3D geological modeling method for borehole data based on machine learning was proposed, which transformed the strata 3D modeling problem into a process of geological attribute classification of the underground spatial grid units. Based on the classification algorithms of support vector machine and BP neural network, automatic 3D geological modeling from borehole data was realized. The results demonstrate that for sparse and limited borehole data, support vector machine can generally perform better than explicit methods. Finally, the influence of hyper-parameter on modeling accuracy and model shape is studied through sensitivity analysis, which provides a new solution for controllable 3D geological modeling.

Key words: machine learning;support vector machine, 3D geological modeling;implicit modeling, borehole data

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