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地下水的一般概念地球表面绝大部分(72%)被水占据着,这些水份在一定的气候条件下,可以蒸发而变为水汽,然后又由水汽变为雨、雪、雹、霜、露而降落地面。降落到地面的水,除一部分再蒸发和另一部集成水流汇入海洋外,剩余部分则沿着地层的空隙渗透到地下,积聚于岩层的孔隙与裂缝中,成为我们所说的地下水。地下水根据是否受重力的影响而分为物理结合水与重力水两种:物理结合水是地面上的水份沿地层孔隙渗透的过程中,由于受到土颗粒的分子引力作用,而被吸着于
General concept of groundwater The vast majority of the Earth’s surface (72%) is occupied by water that, under certain climatic conditions, can evaporate and become water vapor, which in turn turns from water vapor into rain, snow, hail, frost and dew And landing the ground. The water that landed on the ground, except for part of the re-evaporation and another integrated water flow into the ocean, the rest of the water penetrated into the ground along the gap of the formation, accumulated in the pores and cracks in the rock formation, and became what we call groundwater. Groundwater is divided into two types according to whether they are gravitationally combined with physical water or gravity water: physical water is the water on the ground penetrating into the pores of the formation, and is absorbed by the gravitational attraction of the soil particles