典型流域河流相粉质黏土层物理力学指标相关性分析  

CORRELATION ANALYSIS OF PHYSICAL AND MECHANICAL INDEXES OF FLUVIAL SILTY CLAY LAYER IN TYPICAL RIVER BASINS

作　　者：史敬涛 颜翔锦 田野 王末 王江玉龙 姜禹戈 孙欢 SHI Jing-tao;YAN Xiang-jin;TIAN Ye;WANG Mo;WANG Jiang-yu-long;JIANG Yu-ge;SUN Huan(Langfang Natural Resources Survey Center,CGS,Langfang 065000,Hebei Province,China;Mudanjang Natural Resources Survey Center,CGS,Mudanjiang 157021,Heilongjiang Province,China)

机构地区：[1]中国地质调查局廊坊自然资源综合调查中心,河北廊坊065000 [2]中国地质调查局牡丹江自然资源综合调查中心,黑龙江牡丹江157021

出　　处：《地质与资源》2024年第2期246-253,195,共9页Geology and Resources

基　　金：中国地质调查局项目“辽阳市多要素城市地质调查”(DD20191025);“滦河流域中上游生态修复支撑调查”(ZD20220204).

摘　　要：基于辽宁省辽阳市平原区不同地点、不同深度粉质黏土的土工试验结果,采用一元线性回归分析,对粉质黏土16种物理力学指标的变异性及相互间关系进行数理统计.研究结果表明:1)不同深度、不同地点的土质类型主要是粉质黏土,其含水率较高,且多呈湿、可塑状态;2)粉质黏土湿密度、天然重度、土粒比重、饱和度、孔隙率、液限、塑限7种物理指标的变异系数均较小,压缩系数、压缩模量、黏聚力、内摩擦角4种力学指标的变异系数较大;3)粉质黏土湿密度与天然重度、液限与塑性指数具有良好的线性关系.Based on the soil test results of silty clay at different sites and depths in the plain area of Liaoyang City,Liaoning Province,the variability and correlation of 16 physical and mechanical indexes of silty clay are analyzed by unitary linear regression analysis.The results show that the soil types at different depths and locations are dominated by silty clay,with high water content,mostly in wet and plastic state.The variation coefficients of 7 physical indexes of silty clay including wet density,natural gravity,specific gravity of soil particles,saturation,porosity,liquid limit and plastic limit are small,while the variation coefficients of 4 mechanical indexes such as compression coefficient,compression modulus,cohesion and internal friction angle are large.There is a good linear relation between wet density and natural weight-specific density,and between liquid limit and plastic index of silty clay.

关 键 词：平原区 粉质黏土 土工试验 物理力学指标 回归分析 辽宁省 

分 类 号：P642.1[天文地球—工程地质学]