论文部分内容阅读
在利用压力板仪测定非饱和土的土-水特征曲线时,常用的取样称量法、溢出水称量法分别存在实测试样质量与实际试样质量不相等、实测排水量与实际排水量不相等等问题,从而造成试验结果失真。为此,溢出水校正称量法被引入用来消除取样称量法及溢出水称量法中存在的问题。通过取样称量法、溢出水称量法、溢出水校正称量法的对比研究发现,在同一基质吸力作用下,由取样称量法、溢出水称量法确定的试样饱和度均小于由溢出水校正称量法确定的试样饱和度,并对该现象进行了解释。随后,对取样称量法、溢出水称量法、溢出水校正称量法的适用范围进行了探讨。
When using pressure plate to measure soil-water characteristic curve of unsaturated soil, the commonly used sampling weighing method and overflowing water weighing method respectively exist that the measured sample mass is not equal to the actual sample mass, and the measured displacement is not equal to the actual displacement And other issues, resulting in distortion of the test results. To this end, the overflow water corrected weighing method was introduced to eliminate sampling weighing method and the problem of overflow water weighing method. By sampling weighing method, the overflow water weighing method, overflow water correction weighing comparison study found that under the same substrate suction, by the sampling method, overflow water weighing method to determine the sample saturation are less than Overflow of water calibration method to determine the saturation of the sample, and explain the phenomenon. Subsequently, the sampling weighing method, overflow water weighing method, overflow water correction weighing method is discussed.