Regional concealed pipe layout and water and salt drainage numerical simulation method and device

Abstract

The invention provides a regional concealed conduit layout and water and salt drainage numerical simulation method and device. Reasonable concealed conduit parameters and the water and salt dynamic state under the condition of large-range concealed conduit layout can be determined. The method provided by the invention comprises the following steps: step 1, collecting basic data of a research area;step 2, based on the basic data collected in the step 1, establishing an underground water flow and solute mathematical model of the research area; step 3, establishing an underground water flow andsolute numerical model of the research area in combination with the basic data, performing time and space discretization, defining a model boundary, and inputting an initial underground water level and mineralization degree, geological parameters and an upper boundary source sink; step 4, calibrating the verification model; step 5, refining grids in the concealed drainage area, and determining concealed conduit layout parameters based on concealed conduit layout historical data; step 6, simulating the regional water-salt dynamic state under the concealed conduit drainage condition, outputtingthe drainage and salt elimination amount, and adjusting the concealed conduit layout parameters and the concealed conduit layout mode according to the design target and the regional actual situation so as to achieve the concealed conduit system design target.

Description

technical field [0001] The invention belongs to the technical field of simulated concealed pipe layout for agricultural drainage and salt discharge, and in particular relates to a large-scale concealed pipe layout in saline-alkali areas and a numerical simulation method and device for drainage and salt discharge. Background technique [0002] Soil salinization is a worldwide resource problem and ecological problem, and it is one of the main reasons for the shortage of cultivated land resources and the deterioration of the ecological environment. The underground pipe has a very obvious effect on the improvement of soil salinization, which can effectively reduce the salt content of the soil and improve the physical and chemical properties of the saline-alkali land. The key point in the study of underground pipe drainage and salt discharge is the engineering layout of the underground pipe. The determination of the buried depth, spacing and radius of the underground pipe is the ...

AI Technical Summary

Problems solved by technology

However, this method is only for specific situations, such as fixed crops and specific regions, and the test period is long, the cost is high, and the index determination is complicated.

Most of the current computer simulation programs cannot reflect the groundwater level and water quality of the entire area under the condition of large-scale underground pipe layout, and cannot determine the drainage and salt discharge effect of the entire area's underground pipe system

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