Groundwater pollution source space comprehensive recognition method applying numerical simulation

A numerical simulation and identification method technology, applied in CAD numerical modeling, special data processing applications, electrical digital data processing, etc.

Active Publication Date: 2021-08-10
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

[0006] The present invention provides a comprehensive identification method of groundwater pollution source space using numerical simulation, which is used to solve the problem of combining numerical simulation to trace groundwater pollution sources, combining water flow traces and the clearance of ground pollution sources to accurately determine pollution source generation points, and to more accurately characterize different periods and technical issues such as the change process of pollution sources under the geology

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  • Groundwater pollution source space comprehensive recognition method applying numerical simulation
  • Groundwater pollution source space comprehensive recognition method applying numerical simulation
  • Groundwater pollution source space comprehensive recognition method applying numerical simulation

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Embodiment Construction

[0050] Taking a certain area in the north as an example, the research area is located in the Yanghe River Basin, and the simulated area is about 120km 2 . The groundwater flow in the study area mainly moves horizontally, and the movement conforms to Darcy's law at normal temperature and pressure. The study area belongs to the intermountain basin hydrogeological area, and the main sources of groundwater recharge in the Yanghe Basin are the Yanghe River runoff recharge, atmospheric precipitation, piedmont runoff recharge, and irrigation reinfiltration. According to relevant data analysis, the vertical infiltration recharge of atmospheric precipitation accounts for about 15% of the atmospheric precipitation. As for the lateral recharge of the basin margin mountains, according to the regional hydrogeological census report, the surrounding mountains in Wanquan area recharge the plain groundwater in the form of subsurface flow up to 11.45m 3 / h.

[0051] combine Figure 1 to Fig...

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Abstract

The invention discloses an underground water pollution source space comprehensive recognition method applying numerical simulation. The method comprises the steps of 1, boundary generalization; 2, performing interpolation to obtain an initial water head and a bottom plate elevation; 3, determining a source sink item; 4, carrying out permeability coefficient partitioning on the aquifer; 5, establishing an underground water flow model; 6, carrying out model calibration; 7, inverting an underground water flow trace; and 8, recognizing the exact pollution source of the underground water in space. Through application of simulation software, flowing of groundwater flow related to groundwater pollution sources can be represented in a more representative mode, and targeted regionalization research on groundwater pollution sources is facilitated; according to the invention, by tracking the underground water flow trace, the flow trace of underground water with underground water pollution is reversely studied, and the traceability work can be accurately and visually carried out; spatial accurate analysis is carried out through the division of underground running water traces and scenes such as pollution source types, land types and geological conditions on the ground.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a method for spatially comprehensive identification of groundwater pollution sources using numerical simulation. Background technique [0002] Due to its wide distribution, groundwater is used for domestic water, agricultural irrigation, and industrial production. Due to the application of agricultural chemical fertilizers and improper treatment of domestic and industrial wastewater, nitrates enter the groundwater and cause pollution. The problem of nitrate pollution in groundwater has been the main pollution of groundwater in many countries and regions, and has received widespread attention. The pollution level is still on the rise. [0003] Once the groundwater is polluted, the treatment cost is very high. In particular, nitrate pollution in groundwater is very complicated. It is difficult to trace the discharge location of groundwater pollution sour...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/23G06F30/28G06F111/10G06F113/08G06F119/14
CPCG06F30/23G06F30/28G06F2111/10G06F2113/08G06F2119/14
Inventor 郑明霞苏婧傅雪梅张田孙源媛席北斗
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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