泥质页岩与黄土复配土壤物理特性研究

Study on the Physical Properties of Argillaceous Shale and Loess Compounded Soils

研究通过开展泥质页岩与黄土复配野外试验,测定了复配土壤颗粒级配和土壤水分特征曲线,研究了泥质页岩含量对复配土壤物理特性的影响,并得到以下结论:复配土壤中泥质页岩含量越高,土壤中的粉黏粒含量越低;复配土壤中泥质页岩含量越多,土壤的孔隙度会越大,透气性会增加,而持水能力下降;随着土壤中泥质页岩含量的增加,土壤供水能力逐渐减小;不同复配比例土壤田间持水量(FC)、凋萎系数(WP)、土壤有效含水量(TAW)均具有明显差异,随着土壤中泥质页岩含量增加,土壤的有效含水量逐渐减小。结果可为土石混合山区土地整治工程提供科学参考。

In this study,the field test of argillaceous shale and loess was carried out to determine the particle size distribution and soil water characteristic curve of argillaceous shale,and the influence of argillaceous shale content on the physical characteristics of argillaceous soil was studied.The following conclusions were drawn:The higher the content of argillaceous shale in argillaceous soil,the lower the content of silt particles in the soil;The more argillaceous shale content in the mixed soil,the greater the porosit of the soil and the increase in air permeability.Water capacity decreases;With the increase of shale content in soil,the water supply capacity of soil decreases gradually.The field water capacity(FC),withering coefficient(WP)and available soil water content(TAW)of soil with different compound ratios were significantly different.With the increase of shale content in the soil,the available soil water content gradually decreased.The research results are expected to provide scientific reference for land improvement projects in mountainous areas with mixed soil and stone.