安庆市某地区液化场地判别研究

Identification of liquefaction site in an area of Anqing

为探明安庆市部分地区的液化情况,以现有的区域工程地质调查资料为依据,依照中国目前国家规范的液化判别方法,对安庆市的宜秀区、迎江区、大观区和怀宁县超820 km2区域地表至20 m深度内的饱和砂土层、粉砂层和粉土层等土层进行液化判别。结果表明:27个工程钻孔中,有10个判别结果为液化;15个静力触探孔中,有14个判别结果为液化。实际工程中应对砂土液化可能造成的地基液化沉陷进行相应的处理。

Based on the existing regional engineering geological survey data and according to the current national standard identification method of liquefaction in China,the liquefaction situation of the saturated sand layer,silty sand layer and silty soil layer at 20 m below the surface is checked and identified in order to find out the liquefaction situation in some areas of Anqing.The project covers the Yixiu District,Yingjiang District,Daguan District and Huaining County of Anqing,with a total area of 820 square kilometers.The results show that 10 out of 27 engineering boreholes are identified as being liquefied,and 14 out of 15 static cone penetration boreholes are liquefied.In practical engineering projects,the liquefaction and subsidence of foundation caused by sand liquefaction should be treated properly.