Indoor simulation device for seawater invasion

Abstract

The invention provides an indoor simulation device for seawater invasion. The device comprises a coast aquiclude simulation device, a groundwater mining simulation device and a reclaimed water recharge simulation device. The coast aquiclude simulation device at least comprises an acrylic box body, a liftable threaded rod, an overflow box, a fresh water tank, a seawater tank, a water tank, a waterpump and an iron frame; the groundwater mining simulation device at least comprises an acrylic pipe, a water pump and a water tank; the reclaimed water recharge simulation device at least comprises acopper-made valve, a water pump, a water tank and a stainless steel frame. By controlling the liftable threaded rod, the position of the fresh water overflow box can be controlled, and the initial water heads of fresh water and seawater in a simulated aquiclude are adjusted. By means of the device, under different hydrodynamic conditions, the influence of the groundwater lifting and lowering process on seawater invasion can be accurately reflected, and an experiment result can provide a data basis for building a seawater invasion model.

Description

technical field [0001] The invention relates to an indoor simulation device for seawater intrusion. Background technique [0002] Under natural conditions, most groundwater is discharged into the ocean as surface runoff or subsurface runoff. In coastal aquifers, brackish and fresh water form an obvious transition zone under the action of hydrodynamic dispersion. Usually, the dynamic balance between brackish and fresh water keeps the brackish and fresh water transition zone in a relatively stable position. However, when the groundwater is exploited in excess of the standard, the seepage of freshwater to seawater will gradually weaken or even disappear, resulting in a gradual increase in the salinity of the freshwater, which will eventually cause a series of ecological and environmental problems, such as water quality deterioration and land salinization. [0003] The core issues of seawater intrusion research are the shape of the interface between saltwater and freshwater and...

AI Technical Summary

Problems solved by technology

At present, scholars at home and abroad mostly use numerical calculation methods to construct models of seawater intrusion. However, due to the complexity and variety of factors, most models are difficult to accurately restore the hydrogeological parameters and hydrodynamic parameters of the actual aquifer. In addition, the process is cumbersome and the accuracy of the calculation results Difficult to guarantee; the field observation method is also subject to many restrictions due to various man-made and natural factors

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