Experimental apparatus and method for simulating influence of underground water level of coastal reclamation area on water-salt movement

Abstract

The invention discloses an experimental apparatus and method for simulating the influence of the underground water level of a coastal reclamation area on water-salt movement. A transparent cuboid soil box is placed into a transparent underground water level control box; a moisture sensor installing hole, a salinity sensor installing hole, a temperature sensor installing hole and a sampling hole are formed in the side wall of the soil box along a direction parallel to the center line of a column body at different radial heights; a filter layer is formed at the bottom of soil in the cuboid soil box, and is wrapped with non-woven cloth; a water flow hole is formed in a side wall which is at the same height as the filter layer; a detachable grid movable plate is arranged on the side wall of the cuboid soil box; an infrared lamp or an incandescent lamp is arranged above the cuboid soil box; a water pipe and a water valve are arranged at positions, which are close to the bottom, on the underground water level control box. By adopting the experimental apparatus and method, soil water-salt movement under the condition of rising of the underground water level due to seawater intrusion in the coastal reclamation area can be simulated, real-time dynamic monitoring can be performed, and the soil water-salt movement rule can be researched by changing different experimental conditions such as different water qualities and water levels in the underground water level control box.

Description

technical field [0001] The invention belongs to the field of farmland water conservancy engineering, and relates to an experimental device and method for simulating the movement of water and salt affected by underground water levels in coastal reclamation areas. Background technique [0002] With the rapid development of social economy, the contradiction of shortage of land resources has become more and more prominent. Many coastal areas have proposed land reclamation plans, and the long-term reclamation and development of tidal flat resources is facing the problem of soil salinization. The water-soluble salt in the saline-alkali land in the coastal reclamation area moves with the seepage of soil water, which is the so-called "salt comes with water, and salt goes with water". The salinity of groundwater in coastal reclamation areas is relatively high, especially in newly reclamated coastal reclamation areas, where groundwater levels are closely connected with seawater. When...

AI Technical Summary

Problems solved by technology

The existing soil column simulation experiment devices mainly carry out soil infiltration experiments and evaporation experiments, and seldom involve the study of the movement process and law of soil water and salt under the influence of different groundwater levels. Lack of reasonable experimental research methods and devices for the effect of salt movement

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