Groundwater is one of the most active and exquisite elements in city geological environment inscapes,and also the most important geological construction power.Long time water-soil interaction not only has influence on the components of both water and soil but also on their properties.The impact of groundwater on soil mainly includes four kinds of function, namely : pHysical function , chemical action , mechanics function , biological function ,which is called the impact of four fields of groundwater variation.Water-soil interaction means micro-mini scale structure of soil has variation on effect of four fields variation of groundwater and then has influence on the macroscopical mechanics property of soil,which produce a series of geological calamities and environmental effects.Some problems in nature and project can be resolved by this research.The essence of the water-soil interaction is at inner relations among groundwater environment-structure-strength.Former do much research in this field,but only are localization at macroscopical pHenomenon or engineering instance analysis and lay particular...
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