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Alternative TitleQuantitative Characterization of Microstructure of Yunnan Typical Purple Mudstone
张丹1; 陈安强2; 苏友波1; 段红平1; 刘刚才3
Corresponding Author刘刚才
Source Publication土壤通报
Abstract通过扫描电子显微镜(SEM)对云南楚雄地区马头山组(K_2m)、禄丰组(J_1l)、妥甸组(J_3t)紫色泥岩的微观结构进行观测,并用Matlab软件处理SEM照片,提取泥岩的颗粒孔隙量化结构信息,以定量表达泥岩颗粒和孔隙的结构特征。结果表明:禄丰组、马头山组和妥甸组泥岩的微结构分别呈蜂窝状、花瓣状和团粒状结构,团粒状(J_3t)结构强度明显低于花瓣状(K_2m)、蜂窝状(J_1l)。三种泥岩的颗粒和孔隙大小不一,颗粒的均匀程度和孔隙的似圆性较差;三种泥岩颗粒分维数大小依次为J_1l(1.74)> K_2m(1.64)> J_3t(1.34),说明J_1l小粒径的颗粒较多,而大粒径的颗粒少,J_3t大粒径的颗粒多,小粒径颗粒少。而孔隙分维数大小为J_3t(1.88)> K_2m(1.58)> J_1l(1.35),说明妥甸组孔隙的联通性好,孔隙较均匀。
Other Abstract

To quantitatively express the particle and pore structures of purple mudstone, the microstructures of purple mudstone of the Matoushan group (K_2m), Lufeng group (J_1l) and Tuodian group (J_3t) in Chuxiong region, Yunnan Province were observed by the scanning electron microscope (SEM). The quantified structure information of particle and pore of mudstone was gained from the SEM image by Matlab software. The results showed that the microstructures of the Lufeng group, Matoushan group and Tuodian group were orderly expressed as honeycomb, petal shaped and granular aggregate. Structural strength of granular aggregate (J_3t) was significantly lower than petal shaped (K_2m) and honeycomb (J_1l). The sizes of particle and pore of three types of mudstone were not uniform. Uniformity of particle and pore circularity were poorer. The particle fractal dimensions of three types of mudstone followed the order of J_1l (1.74) > K_2m (1.64) > J_3t (1.34). The particle fractal dimensions showed that the small sizes of particles of J_1l were more abundant, and the big sizes of particles were less, but on the contrary, J_3t contained larger amount of big size particles and less small ones. The pore fractal dimensions followed the order of J_3t (1.88) > K_2m (1.58) > J_1l (1.35). The pore fractal dimensions showed that connectivity and uniformity of pore were better than the other two types of mudstone.

Keyword紫色泥岩 Sem图像处理 微观结构 分形维数
Subject AreaS152.4
Indexed ByCSCD ; 北大中文核心
Funding Organization国家自然科学基金项目(40971168)资助
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Recommended Citation
GB/T 7714
张丹,陈安强,苏友波,等. 云南典型紫色泥岩微观结构的定量特征[J]. 土壤通报,2014,45(2):321-328.
APA 张丹,陈安强,苏友波,段红平,&刘刚才.(2014).云南典型紫色泥岩微观结构的定量特征.土壤通报,45(2),321-328.
MLA 张丹,et al."云南典型紫色泥岩微观结构的定量特征".土壤通报 45.2(2014):321-328.
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