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依据大量岩土工程勘察实测资料,分析了徐州市第四系新地层的特点及地质成因,重点阐述了新地层与徐州城的地质历史关系,认为新地层是先有汴水、泗水泛滥,后有黄河冲积形成,具有“新”、“软”、“杂”、“变”等特点,并出现城叠城的现象;在分析地质成因的基础上,概括地总结了第四系新地层的工程地质特征及勘察过程中应注意的问题,特别是对老城填杂区提出了岩土工程勘察的一般工作方法,对岩土工程勘察实践具有指导意义。
Based on a large number of geotechnical survey data, the characteristics and geologic origin of the Quaternary new strata in Xuzhou City are analyzed. The geological history of the new strata and Xuzhou City is emphatically elaborated. The new strata are prehistoric, Surabaya flooding, The formation of the alluviation of the Yellow River, with “new ”, “soft ”, “miscellaneous ”, “change ” and other characteristics, and the phenomenon of city overlying the city; on the basis of analysis of geological causes, The engineering geological characteristics of Quaternary new strata and the problems that should be paid attention to during the survey are summarized. The general working methods of geotechnical engineering investigation are put forward especially for the filling area of old city, which is of guiding significance to the geotechnical investigation.