Soil water retention curves of hydrate-bearing sediment, frozen soil, and unsaturated soil

Samples of hydrate-bearing sediment, frozen soil, and unsaturated soil were prepared using the same host porous medium, Ningming clay, primarily composed of montmorillonite. The soil water retention curves (SWRCs) for the different samples were obtained by measuring their matric suction (Pc) and gravimetric water content (w). For frozen soil, matric suction was calculated based on temperature (T), while for hydrate-bearing sediment, it was determined using the temperature depression (Tb - T). Overall, the three porous media exhibit similar water retention capacities. The Excel file provides the data from tests and calculations.

以宁明粘土为主要成分的孔隙介质，其中富含蒙脱石，制备了含有水合物的沉积物、冻结土壤及非饱和土壤样本。通过测量不同样本的基质吸力（Pc）和重量水含量（w），获得了相应的土壤水分保持曲线（SWRCs）。对于冻结土壤，基质吸力的计算基于温度（T），而对于含有水合物的沉积物，则通过温度下降（Tb - T）来确定。总体而言，三种孔隙介质展现出相似的水分保持能力。Excel文件提供了测试和计算所得的数据。