王甫洲水利枢纽砂基强夯处理试验研究

针对王甫洲水利枢纽老河道两岸围堤地基中细砂层应用强夯法进行处理的施工问题，为了选择合理的施工参数和施工工艺，进行了强夯处理试验研究。经强夯试验证实，中细砂层的各项物理力学性质指标得到改善，提高了抗震动液化的能力。试验还为强夯施工提出了施工参数、施工质量控制标准及施工质量检测方法。后期施工表明，强夯处理该砂基的经济指标和施工功效等与其它的施工方法相比是较好的。

Strong-tamping treatment to sand foundation of Wangfuzhou Hydro-junction

In order to solve the treatment problems on medium fine sand layers under the cofferdam foundation located in the two banks of old river bed and to choose suitable construction parameters and technics,a strong tamping test was performed.It was verified through the strong tamping test that for the medium fine sand layers,the physical mechanical properties were improved,and the capacity of vibration proof and liquefaction resistance was enhanced.The costruction parameters,the quality control standards and the quality examination methods for the strong tamping constuction were provided by the test.Later construction has proved that the strong tamping treatment is better than other methods in economic indexes and construction efficiency etc.