基于试验视频图像的花岗岩细观组分运动过程研究

doi:10.13722/j.cnki.jrme.2015.1066

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摘要单轴压缩条件下花岗岩中不同细观组分的运动过程对花岗岩变形破坏过程分析具有重要意义，可以使用视频图像处理技术进行研究。根据花岗岩试件室内常规单轴压缩试验时摄取的试验视频，在提取单帧图像、进行灰度化和二值化处理基础上，得到试样中石英、长石、黑云母的实际分布，用Fourier变换指数评价这些细观组分的形状特征及其随时间的变化过程，使用粒子图像测速技术得到不同时刻、不同细观组分的位移情况，研究细观组分的运动方向、破坏顺序及其与岩石变形破坏过程的关系。结果表明，Fourier变换指数可以用于定量评价花岗岩细观组分的形状特征和细观组分形状的改变过程；在单轴受压过程中，不同细观组分发生明显变形的先后顺序是黑云母、长石、石英；细观组分的运动方向主要是垂直于加荷方向。本文研究成果对于分析岩石变形破坏机理具有一定的参考价值。

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	刘芳1
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	徐金明1

关键词 ：岩石力学, 花岗岩, 视频图像, 细观组分, 运动, Fourier变换

Abstract：The analysis of the movements of various meso-compositions of granite specimen is of great significance in exploring the deformation/failure process of rock material and can be performed using the video image processing techniques. In the current study，the video images were photographed during the laboratory axial compression test. The frame images were extracted from the original video recordings and transformed into the grayscale and binary ones. The actual distributions of the quartz，feldspar，and biotite existed on the specimen were pin-pointed according to the image features of the corresponding compositions. The Fourier transform based shape indices were then used to describe the geometry features and to examine the changes of the indices with time. The particle image velocimetry technique was thereafter used to compute the displacements of various meso-compositions at different times. The relations between the deformation/failure of the specimen and the movement directions/sequences of the meso-compositions were also explored. It shows that Fourier indices may effectively quantify the shape characteristics and their changes of meso-materials on the granite specimen. During the axial compression，the failure of the meso-compositions in the granite specimen were in sequence of biotite，feldspar，and quartz. The components perpendicular to the axial load were the principal parts of the displacements in these minerals.

Key words： rock mechanics granite video image meso-composition movement Fourier transform

引用本文:

刘芳1，2，徐金明1. 基于试验视频图像的花岗岩细观组分运动过程研究[J]. 岩石力学与工程学报, 2016, 35(8): 1602-1608.
LIU Fang1，2，XU Jinming1. An investigation on movements of meso-compositions of granite specimen using video image processing. , 2016, 35(8): 1602-1608.

链接本文:

http://www.rockmech.org/CN/10.13722/j.cnki.jrme.2015.1066 或 http://www.rockmech.org/CN/Y2016/V35/I8/1602

[2]	WENG M C，TUNG S H，SHIH M H. Microscopic characteristics of problematic tertiary sandstone as revealed by grain-wide local deformation[J]. International Journal of Rock Mechanics and Mining Sciences，2009，18(7)：1 243-1 251. " target="_blank">
[7]	陈中一，徐金明，刘芳. 花岗岩中多条裂隙的萌生扩展过程研究[J]. 水文地质工程地质，2015，42(5)：96-101.(CHEN Zhongyi，XU Jinming，LIU Fang. Investigation of the initiation and propagation of multi-cracks in granite[J]. Hydrogeology and Engineering Geology，2015，42(5)：96-101.(in Chinese)) " target="_blank">
[5]	朱泽奇，肖培伟，盛谦，等. 基于数字图像处理的非均质岩石材料破坏过程模拟[J]. 岩土力学，2011，32(12)：3 780-3 786.(ZHU Zeqi，XIAO Peiwei，SHENG Qian，et al. Nummerical simulation of fracture propagation of heterogeneous rock material based on digital image processing[J]. Rock and Soil Mechanics，2011，32(12)：3 780- 3 786.(in Chinese)) " target="_blank">
[9]	陈沙，岳中琦，谭国焕. 基于数字图像的非均质岩土工程材料的数值分析方法[J]. 岩土工程学报，2005，27(8)：956-964.(CHEN Sha，YUE Zhongqi，TAN Guohuan. Digital image based numerical modeling method for heterogeneous geomaterials[J]. Chinese Journal of Geotechnical Engineering，2005，27(8)：956-964.(in Chinese))
[10]	XU J M，CHENG C H，LU H P，et al. Strain field investigation of limestone specimen under uniaxial compression loads using particle image velocimetry[J]. Journal of Central South University of Technology，2011，18(5)：1 619-1 625. " target="_blank">
[12]	NGUYEN T L，HALL S A，VACHER P，et al. Fracture mechanisms in soft rock. Identification and quantification of evolving displacement discontinuities by extended digital image correlation[J]. Tectonophysics，2011，503(1/2)：117-128. " target="_blank">
[15]	MACSLEYNE J P，SIMMONS J P，GRAEF M D. On the use of 2D moment invariants for the automated classification of particle shapes[J]. Acta Materialia，2008，56(3)：427-437.
[17]	章志勇，潘志庚，张明敏，等. 基于多尺度通用傅里叶描述子的灰度图像检索[J]. 中国图象图形学报，2005，10(5)：611-615.(ZHANG Zhiyong，PAN Zhigeng，ZHANG Mingmin，et al. Multiscale generic Fourier descriptor for gray image retrieval[J]. Journal of Image and Graphics，2005，10(5)：611-615.(in Chinese))
[19]	马少鹏，刘善军，赵永红. 数字图像灰度相关性用以描述岩石试件损伤演化的研究[J]. 岩石力学与工程学报，2006，25(3)：590-595.(MA Shaopeng，LIU Shanjun，ZHAO Yonghong. Gray correlantion of digital images from loaded rock specimen surface to evaluate its damage evolution[J]. Chinese Journal of Rock Mechanics and Engineering，2006，25(3)：590-595.(in Chinese))
[3]	温世亿，李静，苏霞，等. 复杂应力条件下围岩破坏的细观特征研究[J]. 岩土力学，2010，31(8)：2 399-2 406.(WEN Shiyi，LI Jing，SU Xia，et al. Studies of mesomechanical structure characters of surrounding rock failure under complex stress state[J]. Rock and Soil Mechanics，2010，31(8)：2 399-2 406.(in Chinese)) " target="_blank">
[13]	GRASEMANN B，EXNER U，TSCHEG G. Displacement-length scaling of brittle faults in ductile shear[J]. Journal of Structural Geology，2011，33(11)：1 650-1 661. " target="_blank">
[1]	XU W J，YUE Z Q，HU R L. Study on the mesostructure and mesomechanical characteristics of the soil-rock mixture using digital image processing based finite element method[J]. International Journal of Rock Mechanics and Mining Sciences，2008，45(5)：749-762.
[11]	CHARLES J J，KUNCHEVA L I，WELLS B，et al，Stability of Kerogen classification with regard to image segmentation[J]. Mathematical Geosciences，2009，41(4)：475-486. " target="_blank">
[8]	于庆磊，杨天鸿，郑超，等. 岩石细观结构对其变形强度影响的数值分析[J]. 岩土力学，2011，32(11)：3 468-3 472.(YU Qinglei，YANG Tianhong，ZHENG Chao，et al. Numerical analysis of influence of rock mesostructure on its deformation and strength[J]. Rock and Soil Mechanics，2011，32(11)：3 468-3 472.(in Chinese)) " target="_blank">
[18]	安晨昊，徐金明，孙皓，等. 单轴压缩条件下花岗岩中不同矿物的形状变化[J]. 岩土力学，2015，36(增1)：471-475.(AN Chenhao，XU Jinming，SUN Hao，et al. Shape changes of various minerals on granite surface during uniaxial compression test[J]. Rock and Soil Mechanics，2005，36(Supp.1)：471-475.(in Chinese)) " target="_blank">
[4]	刘招伟，李元海. 含孔洞岩石单轴压缩下变形破裂规律的实验研究[J]. 工程力学，2010，27(8)：133-139.(LIU Zhaowei，LI Yuanhai. Experimental investigation on the deformation and crack behavior of rock specimen with a hole under going uniaxial compressive load[J]. Engineering Mechanics，2010，27(8)：133-139.(in Chinese))
[6]	徐金明，韩娜娜，李岩松. 石灰岩局部化变形的图像特征[J]. 岩石力学与工程学报，2010，29(10)：2 110-2 115.(XU Jinming，HAN Nana，LI Yansong. Image features of localized deformation of limestone[J]. Chinese Journal of Rock Mechanics and Engineering，2010，29(10)：2 110-2 115.(in Chinese)) " target="_blank">
[14]	WETTIMUNY R，PENUMADU D. Application of Fourier analysis to digital imaging for particle shape analysis[J]. Journal of Computing in Civil Engineering，2004，18(1)：2-9. " target="_blank">
[16]	WANG L B，WANG X R，MOHAMMAD L，et al. Unified method to quantify aggregate shape angularity and texture using fourier analysis[J]. Journal of Materials in Civil Engineering，2005，17(5)：498-504. " target="_blank">