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    基于构造恢复理论的含复杂断层三维地质建模方法

    花卫华 曾新灵 郭丹阳 宿紫莹 张文 段剑超

    花卫华, 曾新灵, 郭丹阳, 宿紫莹, 张文, 段剑超, 2024. 基于构造恢复理论的含复杂断层三维地质建模方法. 地球科学, 49(4): 1411-1420. doi: 10.3799/dqkx.2022.452
    引用本文: 花卫华, 曾新灵, 郭丹阳, 宿紫莹, 张文, 段剑超, 2024. 基于构造恢复理论的含复杂断层三维地质建模方法. 地球科学, 49(4): 1411-1420. doi: 10.3799/dqkx.2022.452
    Hua Weihua, Zeng Xinling, Guo Danyang, Su Ziying, Zhang Wen, Duan Jianchao, 2024. 3D Geological Modeling Method Based on Tectonic Restoration Theory. Earth Science, 49(4): 1411-1420. doi: 10.3799/dqkx.2022.452
    Citation: Hua Weihua, Zeng Xinling, Guo Danyang, Su Ziying, Zhang Wen, Duan Jianchao, 2024. 3D Geological Modeling Method Based on Tectonic Restoration Theory. Earth Science, 49(4): 1411-1420. doi: 10.3799/dqkx.2022.452

    基于构造恢复理论的含复杂断层三维地质建模方法

    doi: 10.3799/dqkx.2022.452
    基金项目: 

    国家重点研发计划课题 2019YFC0605102

    国家自然科学基金项目 41972307

    详细信息
      作者简介:

      花卫华,副教授,博士,主要从事多约束下复杂地质模型快速构建与定量分析研究. ORCID:0000-0002-2255-7411. E-mail:huaweihua@cug.edu.cn

      通讯作者:

      曾新灵,硕士研究生,主要从事三维地质建模和机器学习研究. E-mail: 3094473992@qq.com

    • 中图分类号: P628

    3D Geological Modeling Method Based on Tectonic Restoration Theory

    • 摘要: 在三维地质建模中,许多工作集中于断层本身的模拟,而忽略了断层时序性对地层构造的影响,然而考虑断层构造时序性及其导致的变形是十分必要和关键的.针对此问题,基于断裂恢复与演化影响域理论,提出了断裂矢量场建模方法用于含复杂断裂网络的三维地质建模,先使用断裂矢量场位移算子以断裂构造演化逆序恢复影响域范围内的地层和断层数据,再以演化正序逐步计算受断层影响后的地层和断层数据,获得含复杂断层网络的三维地质模型.通过建模实验和对比实验,验证了方法对数据具有更高的利用率以及在处理断裂接触时的能力,并且在建模过程会自动计算断裂导致的一切位移,提高了建模合理性和效率.方法充分考虑了断层构造时序性的影响,更适用于解决具有复杂接触关系的断裂网络模型构建问题.

       

    • 图  1  断裂构造期次

      Fig.  1.  Fault structure stage

      图  2  建模数据

      a.地层采样点和产状点;b.断层采样点和产状点

      Fig.  2.  Modeling data

      图  3  断裂网络应用实例

      Fig.  3.  Example of a fractured network application

      图  4  多断裂作用下的位移变形

      a.多断裂下地层的一致变形;b.断裂接触关系

      Fig.  4.  Displacement deformation under the action of multiple fractures

      图  5  断裂建模方法对比

      a.VFSD方法;b.断裂矢量场建模方法

      Fig.  5.  Comparison of fracture modeling methods

      表  1  断裂构造恢复

      Table  1.   Restoration of fault structures

      断裂构造恢复:按照断裂构造演化逆序恢复断裂和地层数据
      For每一条断裂i
      计算断裂面的标量场插值函数及矢量场位移函数
      For每一条断裂j(不包含比断裂i新的断裂)
      For断裂j的观测点
      If观测点位于断裂i的椭球体矢量场范围
      If观测点位于断裂i上盘
      利用GSL求解断裂i的上盘矢量场位移,对断裂j的观测点进行恢复
      Else
      利用GSL求解断裂i的下盘矢量场位移,对断裂j的观测点进行恢复
      End If
      End If
      End For
      End For
      For每一个地层点
      If地层点位于断裂i的椭球体矢量场范围
      If地层点位于断裂i上盘
      利用GSL求解断裂i的上盘矢量场位移,对该地层点进行恢复
      Else
      利用GSL求解断裂i的下盘矢量场位移,对该地层点进行恢复
      End If
      End If
      End For
      End For
      下载: 导出CSV

      表  2  沉积地层

      Table  2.   Sedimentary strata

      地层面名称 沉积序列 颜色
      Cretaceous 1 粉红
      Yarragadee 2 浅黄
      Permian 3 深红
      Lesueur 4 深黄
      下载: 导出CSV

      表  3  断裂构造时序

      Table  3.   Time series of fault structures

      断裂构造名称 构造时序 倾角(o) 倾向(o) 走向(o)
      fault_Urella_South 1 50.172 150 258.453 840 168.453 884
      fault_Darling 2 61.379 678 262.886 991 172.886 991
      fault_Urella_North 3 45.884 855 258.491 356 168.491 356
      fault_Hypo_fault_E 4 66.705 447 252.583 876 162.583 876
      fault_Hypo_fault_W 5 64.573 130 72.583 876 342.583 876
      fault_Eneabba_South 6 40.562 225 258.462 867 168.462 867
      fault_Coomallo 7 56.597 000 78.277 337 348.277 337
      fault_Abrolhos_Transfer 8 89.473 746 216.987 277 126.987 277
      下载: 导出CSV
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    出版历程
    • 收稿日期:  2022-08-14
    • 网络出版日期:  2024-04-30
    • 刊出日期:  2024-04-25

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