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根据陕北地区某一大厚度湿陷性黄土场地勘察资料,对比了现场浸水试验与室内土工试验两种条件下的自重湿陷量,结果表明,现场实测值远小于室内试验计算值,尤其场地的自重湿陷特性与传统的认识差别较大。经调查研究所在区域其他相关试验资料,也出现类似的情况。该文从试验条件、黄土成因、地质时代等多方面对陕北大厚度黄土地区的湿陷性进行了分析和总结,并提出了建议。
According to the survey data of a large thickness of collapsible loess in northern Shaanxi, the weight of self-contained collapsible under two conditions of in-situ immersion test and indoor geotechnical test is compared. The results show that the measured values in the field are far less than the calculated values in the laboratory, The weight of collapsing characteristics and the traditional understanding of the larger differences. A similar situation has also appeared in other relevant test data of the region under investigation. This paper analyzes and summarizes the collapsibility of large-thickness loess areas in northern Shaanxi from experimental conditions, loess origin, geological age and so on, and puts forward some suggestions.