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Plane measurement method and apparatus for total field magnetometer measuring rock and magnetic parameter of ore specimen

A magnetometer and magnetic parameter technology, which is used in the flat measurement of the magnetic parameters of ore specimens, and uses the total field magnetometer to measure the field of rock, which can solve the problems of device movement, complex structure, and inaccurate measurement.

Active Publication Date: 2011-10-19
中色杰泰地球物理科技(北京)有限公司
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Problems solved by technology

Due to the complex structure and the test of flipping the specimen on an inclined plane, it is easy to cause the device to move
However, the magnetic field strength has an inverse relationship with the third power of the distance, even a small displacement will make the measurement inaccurate

Method used

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  • Plane measurement method and apparatus for total field magnetometer measuring rock and magnetic parameter of ore specimen
  • Plane measurement method and apparatus for total field magnetometer measuring rock and magnetic parameter of ore specimen
  • Plane measurement method and apparatus for total field magnetometer measuring rock and magnetic parameter of ore specimen

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Embodiment Construction

[0050] Below in conjunction with accompanying drawing, the method for measuring the magnetic parameters of rock and ore specimens of the present invention and the device thereof will be further described in detail.

[0051] The horizontal measurement method of the present invention is to use the normal total geomagnetic field (T 0 ) is decomposed into vertical component magnetic field (Z 0 ) and the horizontal component magnetic field (H 0 ),which is

[0052] Z 0 =T 0 sinI (1)

[0053] h 0 =T 0 cosI (2)

[0054] Vertical component magnetic field Z 0 and the horizontal component magnetic field H 0 Act on the specimen at the same time.

[0055] The induced magnetism produced by the specimen and the original residual magnetism are measured by the total field magnetometer (the total field magnetometer in the present invention can adopt proton magnetometer, optical pump magnetometer or superconducting magnetometer, etc.) positioned at the second position of Gauss to, cal...

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Abstract

The invention relates to a plane measurement method and an apparatus for a total field magnetometer measuring rock and a magnetic parameter of ore specimen. The employed plane measurement apparatus comprises a total field magnetometer, a specimen box with specimen in the box, a flat and flat supports. The total field magnetometer includes probes and probe supports. According to the invention, parameters measured by the total field magnetometer are inserted into formulas so as to obtain a magnetic susceptibility K and a residual magnetization Mr of specimen parameters. According to an appendix C of Technical Regulations on Ground High-precision Magnetic Survey in China, an apparatus of the total field magnetometer measuring rock and the magnetic parameter of the ore specimen is an oblique measurement apparatus. According to the invention, the oblique measurement is modified into plane measurement. Therefore, with utilization of the plane measurement apparatus, errors caused by inaccurate slope adjustment can be avoided. Moreover, with utilization of the oblique measurement apparatus, the rock and ore specimens are overturned and vibrated on the oblique surface, so that inclined displacement is caused and thus a maximum error of deviation in range is caused; however, the above-mentioned problem can be solved according to the invention. the plane measurement apparatus provided in the invention has advantages of simple structure and firmness; besides, the precision of the magnetic parameter measurement of the rock and ore specimens can be improved.

Description

technical field [0001] The invention belongs to the field of magnetic parameter exploration of rock and ore specimens by geophysical magnetic methods, and in particular relates to a method and a device for measuring the magnetic parameters of rock and ore specimens using a total field magnetometer. Background technique [0002] Since the free proton magnetometer replaced the traditional mechanical magnetic scale in our country's ground magnetic measuring instrument, the accuracy of ground magnetic survey has been greatly improved. Because the proton magnetometer measures the value of the total geomagnetic field (T), the device and calculation formula used to measure the magnetic parameters of rock (ore) specimens have also been changed accordingly. "Appendix C of "Gives the calculation formula of the measured magnetic parameters: [0003] Gaussian second position: [0004] magnetic susceptibility: K = 10 r ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R33/12G01R33/16G01V3/40
Inventor 王庆乙蒋彬徐立忠
Owner 中色杰泰地球物理科技(北京)有限公司
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