土体物理力学性质相关性分析——以云南省德宏州遮放盆地土体为例  

CORRELATION ANALYSIS OF SOIL MASS PHYSICAL AND MECHANICAL PROPERTIES——TAKE THE SOIL MASS OF ZHEFANG BASIN AS THE EXAMPLE IN DEHONG STATE,YUNNAN PROVINCE

作　　者：缪宇[1] 何茂源 MIAO Yu;HE Mao-yuan(Armed Police Gold Forces Tenth Detachment,Kunming 650001,China)

机构地区：[1]武警黄金第十支队,昆明650001

出　　处：《地质灾害与环境保护》2018年第3期67-72,共6页Journal of Geological Hazards and Environment Preservation

摘　　要：云南省德宏州芒市遮放盆地是连接中缅边境的重要的交通枢纽,前人对该区域研究程度较高,但仅局限于区域地质调查和工程地质调查,对盆地内出露面积最大的土体研究程度较低。土体物理力学参数显示研究区内土体力学性质与土体颗粒度、骨架颗粒含量、粘粒含量及孔隙度密切相关,呈现出由粉质黏土-中粗砂土逐渐递减的趋势;承载力Fa与塑性指数IP关系最为密切,与比重Gs次之,具明显的正相关关系;通过聚类分析和因子分析,基本可以把研究区内物理力学参数分为两类:一类为与承载力呈正相关或中等相关关系的物理力学参数;另一类为与承载力呈负相关或弱相关关系的物理力学参数。Zhefang basin of Dehong state in Yunnan province is an important transport hub connecting China and Myanmar,the predecessors have a high degree of research in this area,but it is limited to regional geological and engineering geological surver,the degree of research on the soil mass with the largest exposed area in the basin is relatively low.The physical and mechanical parameters of soil mass show that the mechanical properties of soil mass are closely relatied to the granularity,the content of skeleton particles,the content of clay and the porosity,show a trend of decline from silty clay to middle coarse sand.The relationship between the bearing capacity and the plastic index is most closely related,the specific gravity of the second,with a clear positive correlation.Cluster analysis and factor analysis show that the physical and mechanical parameters can be divided into two categories：one type is the physical and mechanical parameters that are positively or moderately related to the bearing capacity;anther type is the weakly or negatively related to the bearing capacity.

关 键 词：遮放盆地 土体物理力学参数 承载力 多元统计分析 因子分析 

分 类 号：P642[天文地球—工程地质学] P642.15[天文地球—地质矿产勘探]