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本文应用长春地区两处观测场所得的部分野外观测资料,对粘性土水分状态对冻胀的影响作初步分析。 一、观测场布置及成果分析 观测场地分别在长春地区的榆树县向阳水库及长春市郊区西新水库库岸缓坡上。造成四种不同地下水位的观测点,试坑平面尺寸为2×2m。各点观测项目包括冻深、地温、冻胀、地下水位,冻深以冻胀后的地面起算,其土质性质如表1。从1979年至1984年先后在向阳水库的泄洪渠和榆树县的松前灌区一干渠,以及向阳与西新观测场进行了观测,现将结果分析如下。
In this paper, we use the field observation data obtained from two observation sites in Changchun region to make a preliminary analysis of the effect of the state of moisture on the frost heave of the clay soil. I. Observation Field Arrangement and Results Analysis The observation sites were on the gentle slope of Xiangyang Reservoir in Yushu County and Xixin Reservoir Bank in the suburbs of Changchun City. Causes four different groundwater level observation points, the test pit plane size is 2 × 2m. The observation items at each site include the depth of freezing, ground temperature, frost heave, and groundwater level. The frost depth is calculated from the ground after frost heaving. The soil properties are shown in Table 1. From 1979 to 1984, the discharge channels of Xiangyang Reservoir and the trunk canal of Songqian Irrigation District in Xiangshu County, as well as observation stations in Xiangyang and Xixin were observed. The results are analyzed as follows.