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土体的水理性质会直接对其强度和性状产生重要影响,在实际工程中,也会影响到建筑物、路堤和边坡的稳定性。通过渗透试验、湿化试验和毛细管水上升高度试验,对低液限粉土的透水性、毛细管性、崩解性等水理特性进行了研究。结果表明:对于低液限粉土,当含水率相同时,随着压实度的增大渗透系数减小,其湿化崩解速度减慢;当压实度一定时,压实粉土的渗透系数与含水率呈非线性关系,随着含水率的增大而减小,在最优含水率下,其湿化崩解速度最慢。压实的低液限粉土毛细水会随时间增加而逐渐升高,且其升高速度前期较大,中后期较小。
Soil hydraulic properties will directly affect the strength and traits of the soil. In practical engineering, the stability of buildings, embankments and slopes will also be affected. The permeability characteristics, capillary properties and disintegration of low liquid limit silts were studied by means of infiltration test, wetting test and capillary water lifting height test. The results show that for the low liquid limit silt, when the water content is the same, the permeability decreases with the increase of the compaction degree, and the wetting and disintegration rate of the silt decreases. When the compaction degree is constant, The permeability coefficient shows a nonlinear relationship with the moisture content, decreases with the increase of water content, and the slowest rate of wetting and disintegration under the optimal moisture content. Compacted low liquid limit silt capillary water will increase with time and gradually increased, and its early increase in the larger, smaller in the late.