Groundwater Model Simulation Based On Geometric And Attribute Constraint Changes

Groundwater,as one of the basic elements of the environment,is a very valuable resource,whose research is related to the correct evaluation and rational utilization of water resources.The groundwater numerical model is an effective tool and commonly used means to depict,characterize and reproduce the groundwater system.What's more,it can simulate the characteristics of groundwater system and solve the problem of groundwater resource evaluation under the conditions of complex hydrogeological conditions and groundwater exploitation and utilization.In the simulation of groundwater model,the study area aquifer is usually discrete as a grid unit,and the mesh generation is usually only taken into account the spatial geometry,but the attribute data is not considered.Secondly,the simulated external conditions are changed,while the spatial discrete grid in the model simulation is invariable.Therefore,the initial grid can not reflect the change characteristics of attribute data very well,which will affect the accuracy of model simulation.In view of the above problems,based on the geometric and attribute characteristics constraints,this paper studies the mesh generation algorithm,and carries out the simulation experiments of groundwater model under different space discrete grid conditions,thus verifying the applicability of the mesh generation algorithm.With regard to the change of the external conditions,this paper comprehensively considers the geometric spatial characteristics of the hydrogeological model and the dynamic changes of the internal attribute data,and then carries out the groundwater model simulation study based on the change of the feature constraint set.The main contents and results of this paper are as follows:(1)Research on triangulation algorithm based on geometric and attribute constraintsThe mesh generation is usually only taken into account the spatial geometry,but the spatial distribution characteristics of attribute data is not considered.Therefore,in this paper,the attribute feature constraint conditions are introduced to construct the size control field and the triangulation algorithm,which is based on the geometric and attribute constraints is constructed.(2)Case analysis of groundwater model simulation based on geometric and attribute constraintsWith the mesh generation algorithm based on geometric and attribute constraints and the scheme of groundwater model grid configuration,the groundwater model simulation experiments with different constraints are carried out in this paper.Besides,the influence of the grid of different characteristic constraints on the simulation accuracy of groundwater model is explored,and the applicability of the triangular mesh generation algorithm based on geometric and attribute constraints is verified in the groundwater model simulation.(3)Simulation of groundwater model based on dynamic changes of constraint setsIn the simulation of groundwater model,the simulated external conditions often change,so the initial discrete grid is difficult to satisfy the accuracy of simulation.Therefore,in view of the changes of external conditions and attribute characteristics,the groundwater model simulation experiment under the change of geometric and attribute constraint sets is carried out in this paper.