辽西黄土的物质组成与微观结构特征
摘要:黄土的物质组成和结构特征对深入研究黄土的工程地质特性和湿陷机理具有重要的意义。利用颗分试验、X射线衍射技术、化学分析技术及扫描电镜测试技术,对阜新-朝阳高速公路沿线黄土的颗粒组成、化学成分、矿物成分、易溶盐,以及原状黄土的微观结构进行了测试、分析。结果表明:①黄土的颗粒成分以粉粒为主,粉粒中又以粗粉粒为主;粘粒含量变化较大;②黄土中的碎屑矿物以石英和长石为主,粘土矿物以伊利石、伊蒙混层为主;③黄土中的易溶盐和难溶盐较其他地区偏低;④浅层黄土结构较松散,为支架大孔微胶结结构和支架大孔-镶嵌微孔半胶结结构;深层黄土结构较为密实,多为絮凝状胶结结构和凝块状胶结结构。
Abstract:Physical composition and microstructure of loess have an important significance to research further engineering geological characteristics, collapsibility and its mechanism. So the physical components such as particles, chemical composition, mineral component, soluble salines and microstructure of leoss along the line of Fuxin-Chaoyang freeway, are tested and analyzed by means of particle analysis, X radial diffract technique, chemical test and scanning electron microscope(SEM). As a result, some conclusions are drawn as follows:①Silt grain is main part in loess, and content of coarse silt is great. The content of clay grain has a larger range. ② The drossy minerals in loess are mainly comprised of quartz and feldspar. Illite and blending of montmorillonite and illite take a dominating position in clay mineral.③ The content of diffluent saline and hardy-soluble saline in loess are less than other areas in China. And ④ the structure loess is looser in shallow depth, and denser in deeper depth. There are weak-cemented structure with bracket particles and big pores and half-cemented structure with bracket particles and big pores to inlay particles and micro pores in cemented structure in deep depth. shallow depth, and flocculent-cemented structure and clotted-cemented structure in deep depth.
中文标题：
辽西黄土的物质组成与微观结构特征
Physical Components and Microstructure Characteristics of Loess in West of Liaoning
作者：
邢玉东1,2,朱浮声1,王常明3
Xing Yudong1,2,Zhu Fusheng1,Wang Changming3
作者简介:邢玉东,1963年生,男,汉族,山东五莲县人,大学本科毕业,在读博士研究生,教授级高级工程师,研究方向为工程地质和岩土工程。E-mail:xingyudong2005@126.com
通讯地址：
1. 东北大学资源与土木工程学院, 辽宁沈阳 110004; 2. 辽宁省交通勘测设计院, 辽宁沈阳 110005; 3. 吉林大学建设工程学院, 吉林长春 130026
1.CollegeofResourceandCivilEngineeringNortheastUniversity,ShenyangLiaoning110004; 2.LiaoningJiaotongInvestigationandDesignInstitute,ShenyangLiaoning110005; 3.CollegeofConstructionEngineering,JilinUniversity,ChangchunJilin130026China
中图分类号:P642.13;TU411.92
出版物：岩土工程技术
收稿日期:2008-03-21
网络出版日期:2021-07-07
关键词:辽西黄土,物质成分,微观结构,扫描电镜测试,X射线衍射技术
Key words:Liaoxi loess,physical composition,micro structure,SEM test,X radial diffract technique
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基金项目：
基金项目: 辽宁省交通科研项目《阜朝高速公路湿陷性黄土处治技术研究》(200606)
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