Polluted soil detection method based on three-dimensional high-density electrical resistivity method
A high-density resistivity and detection method technology, which is applied in the field of contaminated soil detection based on the three-dimensional high-density resistivity method, can solve problems such as inconsistent measurement conditions, and achieve reliable detection results, low input costs, and short acquisition cycles.
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Embodiment 1
[0019] Embodiment 1: as figure 1 As shown, this embodiment specifically relates to a method for detecting contaminated soil based on a three-dimensional high-density resistivity method, the method comprising the following steps:
[0020] Such as figure 1 As shown, the planar detection unit area 2 is arranged in the pollution area 1, and the measuring line 3 is arranged in the planar detection unit area 2; in this embodiment, the pollution area 1 ( figure 1 The number of planar detection unit areas 2 within the middle dotted circle) is one, and the coverage of planar detection unit area 2 includes the polluted area 1 and the uncontaminated area 4 outside the polluted area 1 ( figure 1 outside the dotted circle).
[0021] In this embodiment, the measuring line 3 includes detection electrodes 5 distributed in the area 2 of the planar detection unit in an equidistant lattice form and a single detection cable 6 sequentially connected to each detection electrode; the detection cab...
Embodiment 2
[0026] Embodiment 2: as figure 2 As shown, the main difference between this embodiment and embodiment 1 lies in the arrangement of the detection cable 6 in the measuring line 3; in this embodiment, the detection cable 6 is arranged inside the area 2 of the planar detection unit in a zigzag manner; The detection cables 6 are distributed in a rectangular spiral form gradually from the edge of the planar detection unit area 2 to the center.
Embodiment 3
[0027] Embodiment 3: as image 3 As shown, the main difference between this embodiment and Embodiment 1 and Embodiment 2 lies in the number of planar detection unit regions 2 . From the above content, it can be known that the longer the length of the measuring line 3 in one direction of the high-density resistivity method, the greater the detection depth, but the lower the accuracy; therefore, for the polluted area 1 with a huge area, it is impossible to use a single planar detection unit area 2 to cover.
[0028] In this embodiment, the contaminated area 1 is covered by four planar detection unit areas 2; in order to obtain the comparison value, the coverage of the planar detection unit area 2 in this embodiment includes the contaminated area 1 and the area outside the contaminated area 1. Uncontaminated area 4. A measuring line 3 of a high-density resistivity method is arranged inside each planar detection unit area 2; the measuring line 3 can adopt the bow-shaped wiring i...
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