Method for positioning constructed wetland blocked area on basis of two-dimensional resistivity imaging technology

The invention discloses a method for positioning a constructed wetland blocked area on the basis of the two-dimensional resistivity imaging technology. The method includes the steps of firstly, conducting a two-dimensional apparent resistivity section survey through the high-intensity resistivity method and three-pole rectangular AMN and MNB devices by reasonably arranging survey lines and setting collection parameters on the premise of the resistivity difference between the blocked packing area and the non-blocked packing area and on the basis of collecting and analyzing existing constructed wetland resources; secondly, conducting two-dimensional inversion on the two three-pole apparent resistivity sections obtained through measurement, converting apparent resistivity data into resistivity data, drawing the contour map of the resistivity sections, and achieving constructed wetland two-dimensional resistivity imaging; thirdly, achieving the aim of positioning the constructed wetland blocked area according to the two-dimensional resistivity imaging characteristics and the resistivity difference analysis. The method is economical and easy to conduct and can fill in the technical gaps in the constructed wetland blocked area two-dimensional positioning, and the powerful technical guarantees are provided for continuous and efficient running of constructed wetlands.