摘要
真空预压法在处理深厚软弱黏土方面有着独特的优势,根据真空预压排水固结机理分析,地下水位的定义是静水压力为零的液面,与超静孔隙水压力无关。真空预压地下水位测量结果排除真空预压超静水压力对地下水位的影响,才能得到真正的地下水位。针对敞口式地下水位测量方法的不足,介绍了"一种防止地表水沿水位管外空隙下渗的装置"专利,并比较分析了3种密闭式地下水位测量方法。各真空预压地下水位测量方法需要解决不同土层通过水位管相互连通问题,而且需要排除残留水膜导电对于地下水位测量的干扰。
Vacuum preloading method hasa unique advantage especially in treatment of deep soft clay. According to theanalysis of consolidation mechanism of vacuum preloading, ground water level is defined to be the zero hydrostatic pressurelevel and has nothing to do with the excess pore water pressure. In order to get the true ground water level, the effect of superhydrostatic pressure in vacuum preloading on ground water level must be removed in the ground water level survey. Toovercome the shortcomings of the open type ground water level measuring method, a patent named a device to prevent surfacewater infiltration through the outer space of the pipe is introduced, and three kinds of closed ground water level measuringmethods are compared and analyzed. The ground water level measuring methods in vacuum preloading need to solve theproblem of interconnecting of different layers through water level tubes, and also need to remove the interference of residualwater conductivity to ground water level measuring.
出处
《中国港湾建设》
2016年第9期37-41,共5页
China Harbour Engineering
关键词
真空预压
地下水位
测量装置
负压
静水压力
vacuum preloading
underground water level
measuring device
negative pressure
hydrostatic pressure
