摘要
红色黏土在黏土化过程中,经历了铁、铝质矿物的累积与盐基成分的淋失,表现出高液限、高含水率、高塑性、分散性等特殊物理力学性质。对三峡库区不同深度、高程点、风化程度的红色黏土开展了物理、力学性质实验,并采用X-衍射实验、化学全分析、环境扫描电镜等微观实验手段,分析了红色黏土的物相结构特征,探讨了巴东组残积红色黏土的宏观、微观物性特征及其规律。研究结果表明,红色黏土的物理、力学性质沿水平与深度方向均表现出规律性,其母岩类型、风化程度、矿物组成及结构、粒度特征是影响这一规律的主要因素。
In the whole process of laterization, red clay shows some mechanical properties such as high liq- uid limit, high moisture content, high plasticity, dispersion, and other special physical mechanical proper- ties through the accumulation of iron and aluminum minerals and leaching of base composition. The physi- cal and mechanical properties of the red clay are carried out in different depths, elevation points and weath- ering degree of the Three Gorges Reservoir area by the X-diffraction experiment, complete chemical analy- sis, environmental scanning electronic microscope and other means of micro-test. The red clay is analyzed the phase structure and Badong Formation of residual red clay slope deposits of macroscopic and microscop- ic physical properties and laws are approached. The results show that the red clay^s physical and mechanical properties along the horizontal and the depth direction have its regularity, the style of bed rocks, weathering de- gree, mineral composition and structure and grain size characteristics are the main factors of this law.
出处
《地质科技情报》
CAS
CSCD
北大核心
2013年第1期186-190,共5页
Geological Science and Technology Information
基金
湖北省交通运输厅科技项目“巴东组软岩边坡变形破坏机理及处置技术研究”
关键词
巴东软岩
红色黏土
物理力学性质
微观物性特征
物相结构特征
水敏感性
Badong soft rock
red clay
physical and mechanical properties
microscopic physical property
phase structure characteristics
water sensitivity
