Cyclic Variability in Chemical Composition and Swelling-Shrinkage Properties of the Xiashu Loess Stratum near Nanjing, China

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Cyclic Variability in Chemical Composition and Swelling-Shrinkage Properties of the Xiashu Loess Stratum near Nanjing, China

机译：南京附近下蜀黄土层化学成分的循环变化和溶胀-收缩特性

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Xiashu loess strata are widely distributed along the middle-lower reaches of the Yangtze River in East China with the stratum near Nanjing, Jiangsu Province being typical. The cyclic variability of the stratum was investigated through comparison of geological features, chemical composition, and swelling-shrinkage properties between the loess and the paleosol layers. Based on the investigation of such a cyclic variability, soil behavior associated with the unsaturated state of the Xiashu loess stratum and its usefulness for geotechnical design and construction in the Nanjing area was analyzed.The stratum consisted of two types of cyclically alternating soil layers, namely the loess and the paleosol layers, which was the major cause for its cyclic variability. The loess and the paleosol layers were formed in different sedimentary environments. In order to avoid detrimental results from the differential engineering properties between them, this study suggested for the practitioners the importance of inspecting the variation of water content and controlling the downward net fluxes during geotechnical construction in the Nanjing area.

机译：下蜀黄土地层广泛分布在华东长江中下游地区，典型地层为江苏南京附近。通过比较黄土和古土壤层之间的地质特征，化学成分和溶胀-收缩性质，研究了地层的周期性变化。在研究此类周期性变化的基础上，分析了与下蜀黄土层的不饱和状态有关的土壤行为及其对南京地区岩土工程设计和施工的实用性。该层由两种类型的周期性交替土层组成：黄土和古土壤层，这是其周期性变化的主要原因。黄土和古土壤层形成于不同的沉积环境中。为了避免因它们之间的工程特性差异而产生不利的结果，本研究建议从业人员在南京地区的岩土工程施工过程中，检查水含量的变化并控制向下的净通量的重要性。

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《土壤圈（英文版）》 |2007年第5期|666-672|共7页
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Institute of Geotechnical Engineering, Nanjing University of Technology, Nanjing 210009,China;

Institute of Geotechnical Engineering, Nanjing University of Technology, Nanjing 210009,China;

Institute of Geotechnical Engineering, Nanjing University of Technology, Nanjing 210009,China;

Institute of Geotechnical Engineering, Nanjing University of Technology, Nanjing 210009,China;

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类农业基础科学;
关键词
chemical composition, cyclic variability, swelling-shrinkage properties, unsaturated state, Xiashu loess stratum;

机译：化学成分;循环变异性;溶胀收缩特性;不饱和状态;下蜀黄土地层;
入库时间 2022-08-19 04:04:16

Cyclic Variability in Chemical Composition and Swelling-Shrinkage Properties of the Xiashu Loess Stratum near Nanjing, China

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