Electrical detection method and device for leakage of refuse landfill

Abstract

The invention discloses an electrical detection method and device for leakage of a refuse landfill. The electrical detection method is as follows: arranging upper-layer conducting wires in a clay layer at the upper part of a geomembrane in the landfill; arranging lower-layer conducting wires in a clay layer at the lower part of the geomembrane in the landfill; forming a power supply circuit and a measuring circuit with a power supply electrode and a remote electrode; judging whether holes exist on the geomembrane by utilizing whether current exists in the power supply circuit; and determining the specific respective positions of the holes by detecting potential data of the measuring circuit when the holes exists. A line current source is formed by the conducting wires arranged on the landfill, and leakage detection is carried out by utilizing the space distribution characteristic of the line circuit source, therefore, the problem that the existing detection method has the defects of low resolution ratio, complex wire distribution, high detection cost and the like can be effectively solved.

Description

technical field [0001] The invention relates to detection technology in the electrical field, in particular to an electrical detection method and a detection device for detecting seepage points in landfills. Background technique [0002] The leachate produced by garbage in the landfill is a typical polluted liquid. If there is a leak in the anti-seepage system of the landfill, the leachate will be discharged into the surrounding soil and groundwater to cause pollution. At present, the general materials of anti-seepage layer system adopted at home and abroad are clay and high density polyethylene (High Density Polyethylene, HDPE for short) film as geomembrane. Due to construction reasons, quality problems of the HDPE membrane itself, and changes in external factors during the use of the landfill, the anti-seepage layer of the landfill often leaks. In order to prevent the occurrence of pollution, it is very important and necessary to find out the location of the leakage point...

AI Technical Summary

Problems solved by technology

[0004] One of the objects of the present invention is to provide an electrical detection method for landfill leakage, by setting a conductive wire in the landfill to form a line current source, and using the spatial distribution characteristics of the line current source to perform leakage detection, to solve the existing problems. The detection method has problems such as low resolution, complex wiring, and high detection cost

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