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为研究大厚度自重湿陷性黄土湿陷变形规律,对自重湿陷土层36.5m的场地,进行直径40m的浸水试验。通过试验发现:浸水试验昼夜耗水量的变化规律基本上呈现先大、后缓、再稳定的趋势;场地中的地表沉降观测点的总湿陷量及沉降速率变化规律与深层沉降观测点的总湿陷量及沉降速率规律几近相同;大厚度自重湿陷性黄土场地湿陷变形规律呈现浸水期四个变化阶段和停水期两个变化阶段。
In order to study the deformation law of collapsible loess with large thickness, the immersion test of 40m in diameter was carried out on the site of self-weight collapsible soil layer of 36.5m. The experiment shows that the law of daily and diurnal water consumption in the immersion test basically shows the trend of first large, then slow, and then steady. The variation law of the total collapse amount and sedimentation rate of the surface subsidence observation points in the field and the total subsidence point The law of collapse amount and settlement rate are almost the same. The deformation law of the collapsible area with large thickness and self-weight collapsible loess shows two changing stages during the flooding period and two periods during the water-stopping period.