常德市城区工程地质特征

常德市城区包括武陵区、武陵镇、德山,它位于洞庭湖淤积平原上,工程地质条件复杂,为多土层结构,软土层发育。常德为7度地震区。据土层特征,标准贯入,动、静三轴试验结果,在武陵区、武陵镇一带,轻亚粘土31.1％有液化,淤泥质轻亚粘土55.4％有液化,粉砂—细砂层60.5％有液化。据此对常德市城区的工程勘察、地基基础类型提出了一些具体看法和建议。

ENGI NEERI NG GEOLOGIC FEATURE OF THE URBAN AREA OF CHANGDE CITY

The urban area of Changde city includes Wuling district, Wuling town and Deshan. They are situated in the silt plain of Dongting lake. Their engineering geologic Condition is rather complicated, with multilayered soil structure and well-developed soft soil bed. Changdeis a seismic zone of 7 degrees in seismic scale. According to the characteristics of the soil beds, standard penetration test and dynamic and static three-axis tests, in the areas of Wuling district and Wuling town, 31.1% of the light loam, 55.4% of the silty light loam and 60.5% of the silt-fine sand bed are liquefied. Accordingly, some concrete opinions and suggestions are proposed for the engineering reconaissance and ground foundation classifica-tion in the urban areas of Changde city.