Safe drinking water area determination method for three-dimensional dynamic groundwater pollution simulation based on Modflow model

Abstract

The invention relates to a safe drinking water area determination method for three-dimensional dynamic groundwater pollution simulation based on a Modflow model, and the method comprises the steps: S1, determining a research area, and obtaining the data information related to the Modflow model in the research area; s2, based on the data obtained in the S1, establishing a conceptual model according to a research area boundary; s3, establishing a three-dimensional grid model; s4, operating a Modflow model on the three-dimensional grid to establish a three-dimensional underground water static model; s5, operating the Modflow model to obtain a three-dimensional groundwater dynamic model; s6, inputting the data information obtained in the step S1 into a solute transport (MT3DMS) module in the Modflow model, and performing three-dimensional groundwater solute transport dynamic simulation; and S7, determining a safe drinking water area of the research area on the basis of a simulation result in the step S6 and in combination with a human health risk threshold.

Description

technical field [0001] The invention belongs to the field of groundwater numerical simulation, and in particular relates to a method for determining a safe drinking water area based on a three-dimensional dynamic groundwater pollution simulation based on a Modflow model. Background technique [0002] Groundwater is a water resource with stable reserves and clean water quality, and is one of the main sources of domestic water in most cities in my country. However, human activities often lead to the pollution of groundwater systems by various pollutants, which seriously threatens the urban water supply. Point source, line source and non-point source pollution that cause groundwater pollution. Point source pollution refers to the release of pollutants from pollution sources in the form of points, such as engineering wastewater, landfills, mine waste slag piles, etc.; line source pollution refers to pollution sources where the release of pollutants is linear, such as rivers and...

AI Technical Summary

Problems solved by technology

Moreover, most of the harm caused by pollution leakage to the human body and the environment is based on the pollution that can be monitored on the surface, while groundwater pollution is difficult to monitor, and the harm caused by human exposure to polluted groundwater is even more difficult to assess

[0003] At present, there have been some studies on groundwater pollution simulation to overcome the hidden, long-term and difficult-to-monitor characteristics of groundwater pollution.

However, these studies have shortcomings such as poor real-time performance, poor visibility, and poor accuracy, which lead to the lack of corresponding human safety exposure assessment and health risk assessment (drinking water safety assessment) related to groundwater pollution.

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