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构造弱变形区自动有限应变测量-以石英砂岩为例

崔敏 蔡佳

崔敏, 蔡佳, 2014. 构造弱变形区自动有限应变测量-以石英砂岩为例. 地质力学学报, 20 (2): 159-164.
引用本文: 崔敏, 蔡佳, 2014. 构造弱变形区自动有限应变测量-以石英砂岩为例. 地质力学学报, 20 (2): 159-164.
CUI Min, CAI Jia, 2014. AUTOMATIC FINITE STRAIN DETERMINATION OF QUARTZ SANDSTONE IN WEAK STRUCTURAL DEFORMATION REGION. Journal of Geomechanics, 20 (2): 159-164.
Citation: CUI Min, CAI Jia, 2014. AUTOMATIC FINITE STRAIN DETERMINATION OF QUARTZ SANDSTONE IN WEAK STRUCTURAL DEFORMATION REGION. Journal of Geomechanics, 20 (2): 159-164.

构造弱变形区自动有限应变测量-以石英砂岩为例

基金项目: 

国家科技重大专项项目 2011ZX05023-001

详细信息
    作者简介:

    崔敏(1981-),男,山东青岛人,工程师,现从事构造地质研究工作。E-mail:cuimin800@163.com

  • 中图分类号: P551

AUTOMATIC FINITE STRAIN DETERMINATION OF QUARTZ SANDSTONE IN WEAK STRUCTURAL DEFORMATION REGION

  • 摘要: 有限应变测量是研究岩石变形特征的重要研究内容。为了提高岩石有限应变测量的精度与速度,改变手工测量岩石有限应变耗时、枯燥的状况,应用多重图像限制的自动种子区域生长算法,以大青山地区为例,对如变形区内的石英砂岩有限应变进行了自动测量。该算法综合多个图像、利用色彩信息,不需要特殊设备即可对颗粒进行自动识别。算法还在叠加后的图像中,应用了修改的Canny边缘检测算法增强颗粒边界与内部的对比度。识别结果与手工测量的颗粒,在质心坐标、面积、长轴、短轴、有限应变测量方面具有很大的相似性。

     

  • 图  1  原始图像

    Figure  1.  The original image

    图  2  经过多重图像叠加边缘增强后图像

    Figure  2.  The image after superposition and boundary enforced

    图  3  颗粒自动识别与手工描图结果对比

    Figure  3.  Contrast of results between automatic identified and handcrafted

    图  4  自动识别与手工描图几何参数的对比

    Figure  4.  The contrast of geometric parameter between MICASRG and hand crafted

    图  5  自动识别颗粒长轴长、短轴长频数统计直方图

    Figure  5.  Histogram of length of the major axis and axis by MICASRG

    表  1  两组数据的Rf/ $\varphi $ 法岩石应变测量结果

    Table  1.   Results of finite strain estimates (Rf/ $\varphi $ ) based on two sets of data

    参数手工描图自动识别
    Rs1.341.37
    长轴方向14.256.84
    Ri1.661.73
    注:Rs为应变椭圆轴率,Ri为初始椭圆轴率
    下载: 导出CSV
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出版历程
  • 收稿日期:  2014-02-21
  • 刊出日期:  2014-06-28

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