A Groundwater Vulnerability Assessment Method Based on Resistivity Prospecting Method

Abstract

The invention discloses a resistivity exploration method-based groundwater vulnerability assessment method. The method includes the following steps that: step one, one-dimensional and two-dimensional resistivity measurement schemes are formulated according to the terrain features of a region to be assessed; step two, the one-dimensional and two-dimensional resistivity data of the region to be assessed are acquired according to the measurement schemes; step three, inversion calculation is performed on the acquired data, so that the real resistivity distribution and two-dimensional resistivity imaging result of the region to be assessed can be obtained; step four, key parameters required by vulnerability assessment of the region to be assessed are extracted according to the above result; step five, IEC values of the region to be assessed are calculated according to an IEC calculation formula and based on the extracted parameters; and step six, an groundwater vulnerability level map is formulated according to the IEC values and the radiation ranges of measuring points. The resistivity exploration method-based groundwater vulnerability assessment method provided by the invention has the advantages of high resolution, non invasion, low cost and so on.

Description

technical field [0001] The invention relates to a groundwater vulnerability assessment method, in particular to a groundwater vulnerability assessment method based on a resistivity exploration method. Background technique [0002] Groundwater is one of the most important water sources on the earth, and it is an indispensable and important resource for maintaining human life and ecological environment. In recent years, the overexploitation of groundwater resources and groundwater pollution have become a limiting factor for the sustainable development of human beings. Groundwater pollution is also one of the most common environmental problems at present. Groundwater is susceptible to potential pollution caused by human activities such as industry, agriculture, and life. , especially in areas where large amounts of chemical fertilizers and pesticides are used. Therefore, avoiding groundwater overexploitation and protecting groundwater resources from pollution are very importan...

AI Technical Summary

Problems solved by technology

[0004] However, because the Aquifer Vulnerability Index (AVI) is an evaluation method based on borehole data in the study area, the main data comes from borehole and core data in the study area, which makes this technology have high human and financial costs , and has a certain degree of destructiveness to the research area. In addition, the borehole data are often point-to-surface. In the heterogeneous sedimentary layer with large anisotropy, the accuracy of the evaluation results is low, and the application value is greatly reduced.

Images