摘要
分析真空预压中地下水位变化的研究现状,指出目前研究存在的问题。在土水势概念的基础上,以工程应用为目的,定义了地下水位。从真空预压加固地基的机理出发,分析了不同水流边界和不同渗透性的地基土在真空预压处理中地下水位变化的可能情况。通过分析指出,真空预压过程中,地下水位不可能下降,地下水位不变和上升是可能的;认为真空预压兼有降水预压的双重效果是不合理的。在此基础上进一步总结了真空预压法的加固机理。最后探讨了真空预压中地下水位的量测方法。
The current study on groundwater level in vacuum preloading is analyzed, and some problems are listed. To serve for engineering, ground water level in vacuum preloading is defined on the basis of conception of soil water potential. According to the mechanism of vacuum preloading, groundwater level under different water current boundary and different penetrability conditions is analyzed, based on which, it is pointed out that it is possible to keep or increase groundwater level while impossible to decrease during vacuum preloading, and it is unreasonable to consider that vacuum preloading contributes to dewatering. Then, the mechanism of vacuum preloading is concluded, and the measurement method of groundwater level in vacuum preloading is discussed.
出处
《水运工程》
北大核心
2005年第1期1-6,共6页
Port & Waterway Engineering
基金
国家自然科学基金资助项目(58800024)。
关键词
真空预压
地下水位
土水势
加固机理
量测
vacuum preloading
groundwater level
soil water potential
mechanism of consolidation
measurement
