通过自行设计的崩解试验和饱和前后的无侧限抗压强度试验,对宝兰客运专线强湿陷性黄土水稳性进行试验研究,试验结果表明：宝兰强湿陷性黄土遇水前后抗压强度衰减显著,水稳性很差。压实度在100%的试样崩解时间仅为35~40 min；相同时间下,压实度提高可以降低毛细水的上升高度,减缓其崩解速度,有效提高其抗渗性。饱和前后土样的应力应变关系均呈应变软化型变化规律；饱和前后土样的无侧限抗压强度差值达到295.0 kPa,强度衰减约77.1%。%The water stability of Collapsible Loess in Baoji-Lanzhou Passenger-dedicated Line is studied with disintegration test and unconfined compressive strength test. The results show that the compressive strength of Collapsible Loess in Baoji-Lanzhou Passenger-dedicated line is declined rapidly with poor water stability. When the compactness of soil samples is about 100%, the time of disintegration is only 35~40min, meanwhile, with the increasing of the compaction, the height of capillary water is increased which accelerates the rate of disintegration and improves the permeating-resisting performance. The stress-strain curve of the soil samples before and after saturation demonstrates strain softening. The difference of the unconfined compressive strength of the soil samples before and after saturation reaches 295. 0 kPa, and the strength attenuates about 77. 1%.
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