In order to find out the evolvement regularity of surface cracks in soil due to drying shrinkage, an analysis system of crack’s parameters was developed by using MATLAB. Through binarization, crack restoration, noise reduction and skeleton extraction, the morphological parameters of cracks, such as crack rate, length, width, width grading and fractal dimension, were computed by further recognition methods. Through this system, the non-destructive, continuous and dynamic recognition of cracks, as well as the rapid and accurate quantitative analysis of morphological parameters were achieved. Moreover, this system offered a reliable basis for the analysis of dynamic evolvement of cracks. It can be used in slope stability analysis, environmental pollution-control and many other areas.
Key words
crack /
morphological parameter /
binarization /
image recognition /
crack width grading
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References
[1] 袁俊平, 殷宗泽. 考虑裂隙非饱和膨胀土边坡入渗模型与数值模拟[J]. 岩土力学, 2004, 25(10): 1581-1586.(YUAN Jun-ping, YIN Zong-ze. Numerical Model and Simulation of Expansive Soils Slope Infiltration Considering Fissures[J]. Rock and Soil Mechanics, 2004, 25(10): 1581-1586.(in Chinese))
[2] 薛 强, 梁 冰, 刘建军. 裂隙岩体中污染物运移过程的数值模拟[J].岩土力学, 2003, 24(增刊):35-38(XUE Qiang, LIANG Bing, LIU Jian-jun. Numerical Simulation of Contaminant Transport in Jointed Rockmass[J]. Rock and Soil Mechanics, 2003, 24(Sup.): 35-38. (in Chinese))
[3] SMALING E M A, BOUMA J. Bypass Flow and Leaching of Nitrogen in a Kenyan Vertisol at the Onset of Growing Season [J]. Soil Use and Management, 1992, 8(1): 44-47.
[4] 姚海林, 郑少河, 陈守义. 考虑裂隙及雨水渗入影响的膨胀土坡稳定性分析[J]. 岩土工程学报, 2001, 23(5): 606-609. (YAO Hai-lin, ZHENG Shao-he, CHEN Shou-yi. Analysis on the Slope Stability of Expansive Soils Considering Cracks and Infiltration of Rain [J]. Chinese Journal of Geotechnical Engineering, 2001, 23(5): 606-609. (in Chinese))
[5] INOUE H. Lateral Water Flow in a Clayey Agricultural Field with Cracks[J].Geoderma, 1993, 59(1-4):311-325.
[6] VOGEL H, HOFFMANN H, ROTH K. Studies of Crack Dynamics in Clay Soil. I. Experimental Methods, Results, and Morphological Quantification[J]. Geoderma, 2005, 125(3/4): 203-211.
[7] 裴银鸽, 徐则民, 张家明. 土体干缩裂缝研究进展[J]. 应用生态学, 2012 , 23(4): 1137-1144. (PEI Yin-ge, XU Ze-min, ZHANG Jia-ming. Desiccation Cracking of Soil Body: A Review [J]. Chinese Journal of Applied Ecology, 2012, 23(4): 1137-1144. (in Chinese))
[8] 杨更社. 岩体损伤及检测 [M]. 西安 : 陕西科学出版社 , 1998.(YANG Geng-she. Damage and Detection of Rock Mass [M]. Xi’an: Shaanxi Science Press, 1998. (in Chinese))
[9] 袁俊平, 殷宗泽.膨胀土裂隙的量化指标与强度研究[J], 水利学报, 2004, (6):108-113.(YUAN Jun-ping, YIN Zong-ze. Quantitative Index of Fissure and Strength Characteristics of Fissured Expansive Soils [J]. Journal of Hydraulic Engineering, 2004, (6):108-113. (in Chinese))
[10]唐朝生, 崔玉军, TANG A M, 等. 膨胀土收缩开裂过程及其温度效应[J], 岩土工程学报, 2012, 34(12):2181-2187.(TANG Chao-sheng, CUI Yu-jun, TANG A M, et al. Shrinkage and Desiccation Cracking Process of Expansive Soil and Its Temperature-dependent Behavior [J]. Chinese Journal of Geotechnical Engineering, 2012, 34(12): 2181-2187.(in Chinese))
[11]王金安, 谢和平, 田晓燕, 等. 岩石断裂表面分形测量的尺度效应[J]. 岩石力学与工程学报, 2000, 19(1): 11-17. (WANG Jin-an, XIE He-ping, TIAN Xiao-yan, et al. Scale Effect on Fractal Measurement of Rock Fracture Surfaces [J]. Journal of Rock Mechanics and Engineering, 2000, 19(1): 11-17.(in Chinese))
[12]刘 春, 王宝军, 施 斌, 等.基于数字图像识别的岩土体裂隙形态参数分析方法[J], 岩土工程学报, 2008, 30(9):1384-1388.(LIU Chun, WANG Bao-jun, SHI Bin, et al. Analytic Method of Morphological Parameters of Cracks for Rock and Soil Based on Image Processing and Recognition [J]. Chinese Journal of Geotechnical Engineering, 2008, 30(9): 1384-1388.(in Chinese))
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