Transmitting-receiving antenna separation type nuclear magnetic resonance water exploring device and water exploring method

Abstract

The invention relates to a transmitting-receiving antenna separation type nuclear magnetic resonance water exploring device and water exploring method. A computer is connected with a high power supply, a transmitting and control unit, a current collecting unit, a frequency-selecting amplifying unit and a signal collecting unit through serial ports, wherein a control bus is connected with a harmony matching capacitor, a transmitting coil and a diode through an H bridge circuit to form the transmitting and control unit. The water exploring device and water exploring method provided by the invention enable a transmitting antenna and a receiving antenna to be separated, thus a transmitting system and a receiving system can be mutually independent. The water exploring device and water exploring method provided by the invention have the advantages that the high and low voltage separation of transmitting and receiving is realized, thus the reliability of the systems is enhanced; the multiple aspects such as the turn number, dimension, wire diameter, laying type and the like of the transmitting antenna and the receiving antenna are not mutually restricted, thus the amplitude of receiving signals is enhanced, the detecting depth is increased and the detecting speed is enhanced; the far-end reference can cancel interference to enhance the signal-to-noise ratio; and the more comprehensive underground water distribution information can be obtained through three-component measurement, thus the detecting efficiency, accuracy and horizontal resolution are enhanced.

Description

technical field [0001] The invention relates to a geophysical exploration equipment and method, in particular to a nuclear magnetic resonance water finding device and a field working method in which a transceiver antenna and a nuclear magnetic resonance water finding device are separated. Background technique [0002] NMR method (Surface Nuclear Magnetic Resonance Method, referred to as SNMR method). [0003] CN201051151 discloses a nuclear magnetic resonance water finding instrument, which consists of three parts: a transmitting system, a signal receiving system, a microcomputer control and a recording system, one end of the DC / DC converter is connected to a battery, and the other end is connected to a super-strong energy storage device; the super-strong energy storage The high-power AC square wave generator is connected with a high-power AC square wave generator, with a switch K1 in the middle, and the high-power AC square wave generator is also connected with the resonanc...

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Problems solved by technology

[0004] The nuclear magnetic resonance instrument of above-mentioned invention and method thereof have higher measurement precision, and single-point measurement is accurate, but has a shortcoming, and that is exactly whether there is water (for example 100m*100m coil) in a very large range that can be obtained by measuring a point The test area is 10,000 square meters), it is difficult to accurately locate the water body

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