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Total field magnetometer 4-direction determining method and device for magnetic parameters of rock and ore samples

A magnetometer and magnetic parameter technology, which is applied in the field of magnetic parameter measurement of rock and ore specimens in geophysical magnetic exploration, and can solve the problems of uncertain factors in the measurement results of magnetic parameters, lack of geomagnetic dip angle, errors, etc.

Active Publication Date: 2014-07-09
CHINA METALLURGICAL GEOLOGY BUREAU GEOLOGICAL EXPLORATION INST OF SHANDONG ZHENGYUAN
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Problems solved by technology

Since most geophysical exploration units do not have the ability to measure the geomagnetic dip in the field at present, they can only rely on geomagnetic maps or theoretical calculations to estimate the geomagnetic dip, which often has a large error with the actual geomagnetic dip. This difficult-to-control geomagnetic dip Errors lead to large uncertainties in the measurement results of magnetic parameters

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  • Total field magnetometer 4-direction determining method and device for magnetic parameters of rock and ore samples
  • Total field magnetometer 4-direction determining method and device for magnetic parameters of rock and ore samples
  • Total field magnetometer 4-direction determining method and device for magnetic parameters of rock and ore samples

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Embodiment Construction

[0039] Below in conjunction with accompanying drawing, the method for measuring the 4 orientations of the magnetic parameters of the rock ore specimen of the present invention and its device are described in further detail.

[0040] 4 orientation measuring method steps of the present invention are:

[0041] 1. Select a stable geomagnetic normal field, adjust the specimen box seat plate (33) vertically with a plumb line, and make the specimen box seat plate surface on the plane formed by the vertical line and the magnetic north direction, and place the bracket (34) Firm, at this time, the specimen box seat plate can rotate flexibly in the plane formed by the vertical line and the magnetic north direction. For the convenience of recording, the north, bottom, south, and top positions of the specimen box relative to the rotation axis are represented by position numbers 1, 2, 3, and 4, respectively;

[0042] 2. The measuring probe (37) of the total field magnetometer is placed in ...

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Abstract

The invention relates to a total field magnetometer 4-direction determining method and device for magnetic parameters of rock and ore samples. The device comprises total field magnetometers (31, 35 and 37), a sample box (32), a sample box seat plate (33) and a bracket (34). A method for measuring magnetic parameters of rock and ore samples by using a total field magnetometer provided in the Ground High-Precision Magnetic Measurement Technical Regulations of China is an oblique measuring method based on geomagnetic inclination. In the determining method disclosed by the invention, a geomagnetic inclination value is not used, so that errors caused by inaccurate geomagnetic inclination estimation and inaccurate obliqueness adjustment of an oblique plate can be avoided; and a sample position which is approximate to a Gauss first position is adopted, and a sample magnetic field is 1.5-2 times the strength of a Gauss section position at the position of a measuring probe, so that the measurement of a weakly-magnetic sample is facilitated. The determining device disclosed by the invention is provided with a concentric sample box which is easy to overturn, so that distance variation is avoided in the overturning process of the sample, and the accuracy of magnetic parameter measurement can be increased.

Description

technical field [0001] The invention belongs to the field of measuring magnetic parameters of rock ore specimens by geophysical magnetic method, and in particular relates to a four-direction measuring method and a device thereof for measuring the magnetic parameters of rock ore specimens by using a total field magnetometer. Background technique [0002] The determination of rock ore magnetic parameters is a basic work of geophysical magnetic prospecting. Using the total field magnetometer to measure the magnetic parameters of rock ore specimens has always used the oblique measurement method and its device based on the geomagnetic inclination angle. Flip and place on a consistent slope. The calculation formula for measuring magnetic parameters is given in appendix c of my country's current industry standard "Technical Regulations for Ground High-precision Magnetic Measurement" (Dz / T0071-93): [0003] Gaussian first position: [0004] Magnetic susceptibility: [0005] ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R33/12
Inventor 高建东
Owner CHINA METALLURGICAL GEOLOGY BUREAU GEOLOGICAL EXPLORATION INST OF SHANDONG ZHENGYUAN
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