冲海积粉土吹填施工工艺试验研究

Experimental Study on Filling Techniques of Alluvial Marine Sedimentation Silt

选用钱塘江下游慈溪市郑徐水库坝体吹填所用的冲海积粉土为研究对象,采用现场对比试验,对施工过程中2个区块采用不同施工工艺下的孔隙水压力和地下水位进行实时监测和分析,并通过载荷板试验确定地基承载力。结果表明,采用挖掘机振捣处理,可有效提高粉土地基的承载力。

With the alluvial marine sedimentation silt used to fill the Zhengxu Reservoir dams at Cixi, downstream of Qiantang River as the subject, the study conducted comparative tests on two blocks using different techniques, and had realtime monitoring and analysis on their pore water pressure and groundwater level respectively. Bearing capacity of foundation was determined through load plate tests. Results show that the vibration treatment of excavators can effectively increase the bearing capacity of silt foundation.