A Electrical Resistivity Tomography Survey refers to the DC high density resistivity method, but because of the development of dc excitation polarization method, so referred to as the electrical resistivity tomography method. The resistivity tomography method is actually a method of array exploration. In field measurement, only all electrodes (dozens to hundreds) are placed on the measuring point, and then data acquisition can be realized quickly and automatically by using program-controlled electrode switch and microcomputer engineering electrical measuring instrument. After the measurement results are sent into the computer, the data can be processed and the results of physical interpretation of geoelectric cross section distribution can be given. Obviously, the application and development of high-density resistivity exploration technology has greatly advanced the intellectualization degree of electrical exploration. Exploration Features:
1, electrode layout is completed at one time, which not only reduces the failure and interference caused by electrode setting, but also lays a foundation for fast and automatic measurement of field data.
2. It can effectively carry out scanning measurement of various electrode arrays, so it can obtain rich geological information about the structural characteristics of geoelectric section.
3. The field data collection is automated or semi-automated, which not only has a fast acquisition speed (about 2~5s per measuring point), but also avoids errors caused by manual operation.
4, it can preprocess the data and display the profile curve shape. After offline processing, it can also automatically draw and print all kinds of results.
5. Compared with the traditional resistivity method, it has the advantages of low cost, high efficiency, rich information, convenient interpretation and significantly improved exploration ability.
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