Distribution type multi-parameter deep electromagnetic section imaging system and measuring method thereof

Abstract

The invention relates to a distribution type multi-parameter deep electromagnetic section imaging system and a measuring method thereof. The system consists of a main control station and N numbered acquisition stations, and the main control station and the N numbered acquisition stations are in bus type network connection by multi-core multiplexing cables; and each multi-core multiplexing cable comprises a communication bus, an induced polarization (IP power supply wire and a measuring electrode lead. The main control station integrates functions of main control center and acquisition, ensures that man-machine interaction is carried out by a liquid crystal screen and a keyboard, and controls the acquisition stations to perform parameter setting, data acquisition and data postback. When in measurement, the system ensures that IP and controlled source audio-frequency magnetotelluric (CSAMT) measurements can be carried out in sequence on a same measuring line without need of changing the positions of a transmitting system and a receiving system, thus one instrument has two functions, and multiple points are distributed at a time and synchronously received; the main control station measures signals of an electric field and a magnetic field, and the acquisition stations only measure the signals of the electric field, therefore, various parameters of a geologic body are obtained; and parameters obtained by different measuring methods can be verified mutually, so the accuracy, efficiency and reliability of measurement are improved, and the equipment investment and the field working cost are reduced.

Description

Technical field: [0001] The invention relates to a geophysical exploration equipment and a detection method, in particular to a geophysical exploration equipment and a detection method which combine the induced polarization method and the controllable source audio frequency magnetotelluric method. Background technique: [0002] Induced Polarization Method (Induced Polarization Method, abbreviated as IP) is the most effective geophysical prospecting method for finding mineral resources, especially for the unreliable prospecting effect of magnetic and other electrical methods. Magnetic or weakly magnetic ferrous metal ores and sulfide polymetallic ores with a disseminated structure have obvious effects. Compared with resistivity methods, their superiority is as follows: only electronic conductors can cause obvious induced abnormalities, topography or non-polarization The inhomogeneity of the rock will not cause IP anomalies. Since the electrode device of the induced polarizat...

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Problems solved by technology

The disadvantage is that the acquisition of multi-channel analog signals in substations needs to enter the public digital quantization part through multiplexers in turn, which is difficult to meet the needs of accurate phase measurement

When measuring with m

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