| 涂春霖,尹林虎,顾亚.云南遮放盆地粉质黏土物理力学指标相关性分析[J].矿产勘查,2021,12(9):1979-1984 |
| 云南遮放盆地粉质黏土物理力学指标相关性分析 |
| Correlation analysis on physical and mechanical indexes of the silty clay in Zhefang Basin of Yunnan Province |
| 投稿时间：2020-11-23 |
| DOI： |
| 中文关键词: 遮放盆地 粉质黏土 物理指标 力学指标 相关性 |
| 英文关键词: Zhefang Basin silty clay physical indexes mechanical indexes correlation |
| 基金项目:本文受中国地质调查局项目(DD2016008120)资助。 |
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| 中文摘要: |
| 根据遮放盆地粉质黏土的土工试验资料，运用相关关系和一元线性回归分析等方法，研究其物理力学指标及相互间的关系，建立回归方程，为该区勘察设计提供参考。结果表明:区内粉质黏土天然含水率较高、压缩性中等、抗剪强度略高；物理指标变异性较小，其中天然密度ρ、干密度ρd、比重Gs、饱和度Sr、塑性指数IP可作为常量；力学指标变异系数相对较大；WP-WL、ρd-eo高度相关，液性指数IL与压缩系数a1-2、压缩模量Es1-2、内摩擦角Φ相关性也较好，可根据粉质黏土液性指数IL估算力学指标的大小。 |
| 英文摘要: |
| Based on the testing data of the silty clay in Zhefang Basin, using the methods of correlation and unitary linear regression analysis, studying the physical and mechanical indexes and their relationship, to establish regression equations and provide reference for the survey and design of the area. The results show that the silty clay in the area has high water content, medium compressibility and slightly higher shear strength. The variability of physical indicators is small, and the natural density, dry density, speci.c gravity, saturation, and plastic index can be regarded as constants; the coe.cient of variation of mechanical indexes is relatively large. WP-WL and ρd-eo are highly correlated. The liquid index has a good correlation with compressibility, compression modulus and internal friction Angle. The mechanical index can be estimated according to the liquid index of silty clay. |
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