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本文根据山西省地形地貌特点将山西省分为东部山地、西部高原、中部盆地等3个区域,从颗粒组成、液塑限2个方面研究了3个区域粉土物理力学性质的变化规律研究结果表明:山西东部山地区和西部高原区的粉土粒径组成较为稳定,中部盆地区的粉土粒径组成变化较大,分布区域由北向南变化时粉粒含量逐步增多,砂粒含量逐步减小,粘粒含量未发生较大变化;东部山地区和西部高原区的液限值比、塑限值和塑性指数比较稳定,中部盆地区随着地势的降低,液限值在增大,每经过一个盆地液限值约增长1%,塑性指数基本都小于10。
In this paper, Shanxi Province is divided into three parts: eastern mountain, western plateau and central basin according to the topographical features of Shanxi Province. The results of the study on the change laws of physical and mechanical properties of three regions of silt are studied from two aspects of particle composition and liquid-plastic limit The results show that the composition of silt in the eastern mountainous area of Shanxi and the western plateau is relatively stable. The composition of silt in the central basin varies greatly. The content of silt changes gradually from north to south and the content of sand decreases gradually , The clay content did not change greatly; the liquid limit ratio, plastic limit value and plasticity index in the eastern mountainous area and the western plateau area were relatively stable. As the terrain decreased and the liquid limit increased, The liquid limit of a basin increased by about 1% and the plasticity index was less than 10%.