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地质体中的孔隙、裂隙、空洞等含水介质空间,为向较低基准面运动的水体提供了运移活动的空间,是许多水文地质现象得以发生的必要条件。 受地质条件控制,孔隙、裂隙、空洞的不同组合,形成特定的含水岩层。地下水有时充满含水层;有时部份地充满而保留一部份含水介质空间;有时由于人为或自然的因素排出含水层而遗留下曾经充满过水的含水介质空间。在近年来水文地质工作的实践中,认识到在特定的水文地质条件下,当地下水以急剧运移形式补给含水层时,含水介质空间将产生正(气)压现象;当地下水以急剧运移形式排出含水层肘,含水介质空间将产生负(气)压现象。
The space of aquifer such as pores, fissures and voids in the geological body provides the space for migration to the water body moving to the lower datum. It is a necessary condition for many hydrogeological phenomena to happen. Under the control of geological conditions, different combinations of pores, fractures, and voids form specific aquifer rocks. Groundwater is sometimes filled with aquifers; sometimes it is partially filled while retaining some of the aqueous media space; man-made or natural discharge of aquifers is sometimes left behind leaving an aqueous media space that was once flooded with water. In the practice of hydrogeology in recent years, it is recognized that under certain hydrogeological conditions, positive (gas) pressure will be generated in the aqueous medium space when the local sewer recharges aquifers in the form of drastic migration; and the local water drains rapidly The form of discharge aquifer elbow, aqueous medium space will produce negative (gas) pressure phenomenon.