摘要
非饱和土与饱和土最主要的区别在于土中存在基质吸力。非饱和土中的基质吸力很容易受外界环境变化的影响,其中影响最大的是含水量的变化。而降雨可使土坡中的含水量增大,就有可能使土坡内的基质吸力减小甚至消失,这对边坡的稳定性极为不利,降雨入渗是引起非饱和土坡失稳的主要因素。
The main difference between unsaturated soils and saturated soils is suction.Suction in unsaturated soil is very susceptible to the effects of changes in the external environment,which affects the maximum water content changes.Increased rainfall can increase water content of slopes and suction within the slopes is possible to reduce or even disappear,which is extremely detrimental to the stability of the slope.The rainfall is the major factor causing the unsaturated soil slope failure.
出处
《青海大学学报（自然科学版）》
2013年第4期43-47,共5页
Journal of Qinghai University(Natural Science)
基金
青海大学中青年基金项目(2012-QGT-3)
青海大学土力学/基础工程一类课程建设项目(KC-12-1-2)
关键词
非饱和土
土坡稳定
降雨入渗
unsaturated soils
slope stability
rainfall infiltration
