| 黄土湿陷性与土体物性指标的相关性研究 |
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| 引用本文： | 郭倩怡,王友林,谢婉丽,石卫.黄土湿陷性与土体物性指标的相关性研究[J].西北地质,2021(1). |
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| 作者姓名： | 郭倩怡 王友林 谢婉丽 石卫 |
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| 作者单位： | 陕西省水工环地质调查中心;西北大学地质学系/大陆动力学重点实验室 |
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| 基金项目： | 陕西省公益性地质调查专项“咸阳城市地质调查”(20160302);陕西省公益性地质调查专项“关中平原城市群地下空间可持续利用研究”(20180303)。 |
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| 摘 要： | 为充分应用现有的试验资料,构建出一套快速准确的预测评价黄土湿陷性的新方法。笔者基于咸阳黄土塬区多年积累的岩土勘查数据资料,采用因子分析理论同偏最小二乘法及回归分析法相结合的研究方法,深入挖掘试验数据,应用黄土湿陷机理理论基础分析土体物性指标与黄土湿陷系数相关性及主要影响指标,分别构建了基于PLS方法及LogisticCum函数的黄土湿陷系数预测模型。结果表明,采用LogisticCum函数所构建的黄土湿陷系数与饱和度、孔隙比的三维曲面方程在预测黄土湿陷性方面是可靠的,模拟结果更加接近实际,可以满足工程应用的需要。
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| 关 键 词： | 黄土湿陷 物理力学指标 因子分析 偏最小二乘法 预测模型 |
Study on Correlation between Loess Collapsibility and Soil Physical Property Index |
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| GUO Qianyi,WANG Youlin,XIE Wanli,SHI Wei.Study on Correlation between Loess Collapsibility and Soil Physical Property Index[J].Northwestern Geology,2021(1). |
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| Authors: | GUO Qianyi WANG Youlin XIE Wanli SHI Wei |
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| Institution: | (Shaanxi Hydrological Engineering Geology and Environmental Geological Survey Center,Xi'an 710068,Shaanxi,China;State Key Laboratory of Continental Dynamics,Department of Geology,Northwest University,Xi'an 710069,Shaanxi,China) |
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| Abstract: | The authors aimed to use the existed laboratory test data to establish a set of rapid and accurate new method for predicting and evaluating the loess collapsibility.On the basis of the results from laboratory test conducted in Xianyang Loess Plateau,the factor analysis theory,the partial least squares method and the regression analysis method was used.This paper analyzed the correlation between soil physical property index and loess collapsibility coefficient with loess collapsibility mechanism,thus constructing a prediction model of loess collapsibility based on PLS method and LogisticCum function. |
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| Keywords: | loess collapsibility physical and mechanical index factor analysis partial least squares method prediction model |
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