Device and method for observing three-dimensional DC electrical-method simulation experiment

Abstract

The invention discloses a simulation experiment observation instrument by three-dimensional DC electrical-method and an observation method for simulation experiment teaching. The observation instrument consists of a microcomputer, a DC power supply source and a 256-channel data acquisition instrument. The observation instrument can carry out area observation, two-dimensional observation, four-pole observation and high-density observation. The observation instrument not only retains the measuring function of conventional electrical-method instruments, but also can complete single-electrode power supply and multi-electrode area receiving due to a multi-channel parallel-type receiving mode of the observation instrument. The observation method has the advantages of improving observation efficiency by hundreds of times than the conventional electrical-method instruments, along with simplicity, easy operation, short measuring time, high automation degree and high data resolution, so the observation method is true and reliable in obtained data. The invention can complete study on a special method for multi-electrode power supply and multi-electrode receiving according to different experimental purposes. The observation instrument not only can be used as three-dimensional electrical-method physical-model teaching experiment, but also can be used as a field observation instrument for three-dimensional electrical-method exploration.

Description

technical field [0001] The invention relates to a direct current method geophysical exploration equipment and an observation method, in particular to a simulation experiment teaching instrument for collecting three-dimensional direct current electric field potential difference signals and the observation method. Background technique [0002] The current electrical instruments have shortcomings when completing three-dimensional electrical physical simulation experiments. For example, traditional DDC32 and other instruments can only measure the potential of one physical point after each power supply. It takes several hours to collect the potential difference of the reference electrode. On the one hand, human resources are wasted. On the other hand, during the long-term power supply process, changes in factors such as the stability of the power supply system and electrode coupling will affect the physical simulation experiment. As a result, adverse effects are caused; high-dens...

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Problems solved by technology

CN1616987A discloses a "distributed parallel smart electrode potential difference signal acquisition method and system" is composed of several smart electrodes, each smart electrode has 8 working electrodes, which realizes parallel acquisition, but can only measure one field or two Potential difference in the secondary field

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