宜阳粉质黏土含水率Pearson分析及相关性研究

Pearson Analysis and Correlation Study of Moisture Content of Silty Clay in Yiyang Area

以横贯宜阳的新伊高速室内土工试验数据为基础,采用波尔森(Pearson)检验法,分析该地区粉质黏土的含水率等土性指标的概率分布特征,进而获得该地区粉质黏土工程地质特性。通过分析该地区粉质黏土的含水率ω与土体其他重要物理力学指标的波尔森相关系数,建立含水率ω与其他土性指标间的经验公式。结果表明,该粉质黏土的压缩性较差、抗剪强度较低;物理力学指标分布良好,但液性指数IL变异性较大。根据Pearson理论分析结果,该地区粉质黏土含水率与孔隙比和塑限为中相关程度的正相关关系,与液性指数为强相关程度的正相关关系。研究结果可供类似工程提供参考。

Based on the indoor geotechnical experimental data of Xin’an-Yichuan Expressway which crosses the Yiyang area,the Pearson test method is used to analyze the probability distribution characteristics of soil properties such as water content of silty clay in the area,and then the engineering geological characteristics of the silty clay in the area are obtained.Regression analysis is used to analyze the moisture contentωof silty clay in the region and other important physical and mechanical indicators of the soil,and establish an empirical formula for the relationship between moisture contentωand other indicators.The results show that the silty clay has poor compressibility and low shear strength;the physical and mechanical index data distribution is good,but the liquid index IL variability is large.According to Pearson correlation analysis results,the water content of silty clay in this area is medium positively correlated with void ratio and plastic limit,and the water content of silty clay in this area is great positively correlated with liquid index The results of the study can be used as a reference for similar projects.