Resistivity method annular observation system and method for refuse landfill percolation channel

Abstract

The invention discloses a resistivity method annular observation system and method for a refuse landfill percolation channel, in the system, each annular monitoring unit comprises n electrodes, the n electrodes are uniformly buried in a rock-soil layer around a refuse landfill, and every two electrodes are connected through a power supply cable to form an annular shape of which the head and tail electrodes are not connected; the tail end electrode on each ring is connected with the first electrode on the external adjacent ring through a power supply cable; a visual data processing unit comprises a data converter, a data processing host and a computer; through cooperation of the annular monitoring unit and the visual data processing unit, inversion imaging processing is carried out on detection data, comprehensive comparative analysis is carried out on the detection data and a three-dimensional geologic model, and the position and the range of a refuse landfill percolation channel are delineated. According to the invention, the technical problems that the top electrode of the refuse landfill is difficult to arrange and the monitoring error of a conventional observation system is large are solved.

Description

technical field [0001] The invention relates to the technical field of urban geophysics and garbage percolation channel monitoring, and more specifically relates to a resistivity method annular observation system and method for percolation channels of garbage landfill sites. Background technique [0002] Landfills are widely used at home and abroad because of their low construction cost and good sanitary conditions. However, once the leachate of the landfill leaks, it will cause serious pollution to groundwater and the surrounding environment. In recent years, with the continuous increase in the amount of urban domestic waste landfills in my country, the leakage of urban waste landfills has also increased. Accurately locating the seepage channels of waste landfills is essential for effective control of leachate pollution in landfills. very important. [0003] At present, the high-density resistivity method is applied to the monitoring of the seepage channel of the landfill, ...

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Problems solved by technology

[0003] At present, the high-density resistivity method is applied to the monitoring of the seepage channel of the landfill, but the electrode layout of the observation system is distributed above the landfill, and is in the form of a straight line or a rectangular network. The linear section resistivity measurement principle is carried out. Due to the poor grounding conditions and harsh environmental conditions when the electrodes are laid above the landfill, and the anti-seepage layer at the bottom of the landfill is a high-resistivity layer, high-resistance shielding will occur. As a result, the observation system above the landfill cannot accurately determine the percolation channel below the landfill. Therefore, there are large errors in the monitoring of the linear or rectangular mesh observation system above the landfill, and it is difficult to meet the detection accuracy. Require

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