Experiment device for simulating accumulation and migration of solutes of river valley plain zones and method

Abstract

The invention discloses an experiment device for simulating accumulation and migration of solutes of valley plain zones and a method. The experiment device comprises an aeration zone and aquifer medium simulating box body, a water flow and solute supply system, a permeating, water collecting and draining system and a spraying simulating device. The experiment device is capable of achieving the processes of simulating lateral permeation of river to an aquifer, simulating infiltration and vertical supply of rainfall and river, simulating migration and accumulation of soil medium solutes, and thelike, is also capable of simulating drawing of water flow fields and solute concentration fields of different positions, and is further capable of carrying out back calculation for soil or other medium parameters through water flow transportation or solute migration experiment. The experiment device and the method are applied to scientific research and teaching guidance in aspects such as hydrogeology, edaphology and environtology.

Description

technical field [0001] The invention belongs to the experimental research fields of hydrogeology, soil science, environmental science and the like, in particular to a simulated experimental device and method for studying solute accumulation and migration in valley plains. It can be used to study the spatial variation of soil water content in soil hydrodynamics, infiltration and recharge of aerated zone precipitation in farmland hydraulics, groundwater flow movement and pollutant migration in hydrogeology, etc. Basic research or teaching guidance, etc. Background technique [0002] Groundwater is the most important water supply source for agricultural production, life and ecology in northern my country. With the rapid development of society and economy, the increase in water demand has led to a decrease in groundwater level and thickening of the vadose zone, which has a greater impact on the water environmental capacity of soil and aquifers. By simulating the water movement an...

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Problems solved by technology

[0005] Due to the lack of precipitation in the farming-pastoral ecotone and the ecologically fragile grasslands in northern my country, the development, utilization and protection of groundwater are equally important. However, due to the limitations of various subjective and objective technical conditions, it will take a long time and a lot of time to build a complete monitoring network in the field. However, most of the existing simulation devices are limited to one experimental purpose, and it is difficult to reflect the change law of the water flow field and solute concentration field in the valley plain aeration zone and aquifer under the complex water supply and drainage conditions, and cannot guide the practice of production and environmental conditions. Protect

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