CN102221680A - Plane measurement method and apparatus for total field magnetometer measuring rock and magnetic parameter of ore specimen - Google Patents

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

The resultant field magnetometer is measured the flat survey method and the device thereof of rock, specimen of ore magnetic parameter

Technical field

The invention belongs to the geophysics magnetic method and reconnoitre rock, specimen of ore magnetic parameter field, particularly a kind of flat survey method and device thereof that utilizes the resultant field magnetometer to measure rock, specimen of ore magnetic parameter.

Background technology

After magnetic survey instrument in the ground of China substituted traditional mechanical magnetic by the free proton magnetometer and claims, the precision that the ground magnetic method is reconnoitred was greatly enhanced.Because what proton magnetometer was measured is the value of geomagnetic total field (T), also make corresponding change so measure the device and the computing formula of rock (ore) sample magnetic parameter with it, in the appendix C of " ground high-precision magnetic survey technical manual " by name, provided the computing formula of measuring magnetic parameter:

Gauss's second place:

Magnetic susceptibility: $K=\frac{{10r}^3}{{3T}_0}\·\frac{1}{V}[(n_0-\frac{n_1+n_2}{2})+(n_0-\frac{n_3+n_4}{2})+(n_0-\frac{n_5+n_6}{2})]\·{10}^{-6}\×4\mathrm{\π}\·\mathrm{SI}$

The remanent magnetization rate: $I_r=5r^3\·\frac{1}{V}\·\sqrt{{(n_2-n_1)}^2+{(n_4-n_3)}^2+{(n_6-n_5)}^2}\·{10}^{-3}A/m$

Magnetic declination: $\mathrm{\φ}={\tan }^{-1}\frac{n_2-n_1}{n_4-n_3}$

Magnetic dip: $\mathrm{\θ}={\tan }^{-1}\frac{n_6-n_5}{\sqrt{{(n_2-n_1)}^2+{(n_4-n_3)}^2}}$

Each positive and negative direction reads four numbers (Riker mount is read a number along the every half-twist of T direction), promptly averages, for example:

Above various in, r is the distance between sample center and following probe; T ₀Be normal geomagnetic total field; V is the volume of Riker mount; n ₀Be the reading value of terrestrial magnetic field, n ₁～n ₆Magnetic field reading value for six faces of Riker mount.

The oblique survey device that is used for measuring magnetic parameter as shown in Figure 1, comprise resultant field magnetometer probe 11, be used for supporting probe pole 12, Riker mount 13, the adjustable inclination angle of probe swash plate 14, select r (distance between sample center and center probe) and fixed preparation box movable latch 15, fixing and regulate the inclination angle screw rod 16, can do the flat board 17 and the tripod 18 that horizontally rotate.

The central axis of the tested sample of this oblique survey matching requirements is with local earth's magnetic dip angle (I ₀) gradient, aim at the center of resultant field magnetometer probe.In view of the above, this device will have regulates sample plate mechanism of tilting and the clinometer rule that reaches when earth's magnetic dip angle, in order to prevent the downslide of sample on the inclined-plane, the anti-skidding baffle plate of energy adjustable range will be arranged also, and these devices are wanted the no magnetic material of strict employing, prevent magnetic interference.Because structure is comparatively complicated, stirs sample test on the inclined-plane in addition, is easy to make device to produce and moves.And magnetic field intensity has three cubed inverse relation with distance, owes accurate even micro displacement also makes to measure.

Summary of the invention

In order to overcome the defective that existing measuring method and device exist, the objective of the invention is to propose a kind of magnetic parameter that can improve and measure the rock of precision, the flat survey method and the device thereof of specimen of ore magnetic parameter.

A kind of resultant field magnetometer is measured rock, the flat survey device of specimen of ore magnetic parameter, this device comprises the resultant field magnetometer, Riker mount, flat board and pallet, rock sample or specimen of ore are housed in the described Riker mount, described resultant field magnetometer comprises probe, following probe and probe bracket, it is characterized in that: described flat board supports and places stably magnetic field normally by pallet, and make to be positioned at and aim at magnetic north with the perpendicular vertical line of dull and stereotyped major axis on the flat board, described resultant field magnetometer is positioned over a side of dull and stereotyped major axis, described flat board is provided with chute, the Riker mount that is built-in with sample is placed on the dull and stereotyped enterprising line slip of chute, keeps the following center probe of described resultant field magnetometer and Riker mount center contour.

A kind of resultant field magnetometer is measured the flat survey method of rock, specimen of ore magnetic parameter, it is characterized in that: the device that this method adopts comprises the resultant field magnetometer with upper and lower probe, the Riker mount that is built-in with sample and by the flat board that pallet supports, comprises the steps:

A) select geomagnetic normal field stably, pallet is settled firmly, adopt compass with dull and stereotyped leveling, and make to be positioned at and aim at magnetic north with the perpendicular vertical line of dull and stereotyped major axis on the flat board, the resultant field magnetometer is placed in a dull and stereotyped side, make between resultant field magnetometer and the flat board and leave spacing, make the following center probe of resultant field magnetometer and Riker mount center contour, measure to constitute Gauss's second place;

B) read normal geomagnetic total field T by the resultant field magnetometer ₀, the Riker mount that is built-in with sample is placed in the dull and stereotyped chute, the slip Riker mount makes the reading of resultant field magnetometer obviously depart from magnetic field value T normally ₀, the distance R between the following center probe of measurement Riker mount center and resultant field magnetometer;

C) keep one of Riker mount to face up, horizontally rotate Riker mount, make four side Chao Nan of Riker mount successively, and record 4 magnetic field values of position, sample four directions of living in by the resultant field magnetometer respectively; The turned upside down Riker mount, make its another side up, record 4 magnetic field values of sample four directions position of living in once more by the resultant field magnetometer respectively, up and till 24 magnetic field values of four sides during, pass through T successively towards south until six difference that the resultant field magnetometer records Riker mount respectively _IjWrite down this 24 magnetic field values respectively;

D) the volume V of measurement Riker mount;

E) with the T that records in the steps A ₀, the R that records among the step B, 24 magnetic field values that record among V that records among the step D and the step C substitution following formula respectively draw the magnetic susceptibility K and the remanent magnetization Mr of sample:

Draw magnetic susceptibility K by following formula (1):

$K=(K_x+K_y+K_z)/3=\frac{R^3}{T_{0}V}(T_0-\frac{1}{24}\underset{1}{\overset{24}{\mathrm{\Σ}}}{T}_{\mathrm{ij}})\·{10}^{-6}\×4\mathrm{\π}\·\mathrm{SI}---\left(7\right)$

K in the formula _z, K _y, K _xBe respectively sample three axial magnetic susceptibility;

T _IjFor sample is under the different conditions, by the actual measurement magnetic field value that the resultant field magnetometer records respectively, tens i is the end face of Riker mount; Units j is the southern side face of Riker mount;

R is the vertical range between Riker mount and the following center probe; V is the volume of Riker mount; T ₀Be normal geomagnetic total field;

Draw remanent magnetization Mr by following formula (2):

$M_r=\sqrt{M_{\mathrm{rx}}^2+M_{\mathrm{ry}}^2+M_{\mathrm{rz}}^2}\·{10}^{-3}A/m---\left(8\right)$

Wherein:

$M_{\mathrm{rx}}=\frac{R^3}{8(\sin I+\cos I)}[({\mathrm{<figure-callout\; id="13"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{13}+{\mathrm{<figure-callout\; id="14"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{14}+{\mathrm{<figure-callout\; id="15"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{15}+{\mathrm{<figure-callout\; id="16"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{16}+T_{31}+T_{41}+T_{51}+T_{61})----\left(9\right)$

$({\mathrm{<figure-callout\; id="23"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{23}+{\mathrm{<figure-callout\; id="24"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{24}+{\mathrm{<figure-callout\; id="25"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{25}+T_{32}+T_{42}+T_{52}+T_{62})]$

$M_{\mathrm{ry}}=\frac{R^3}{8(\sin I+\cos I)}[(T_{31}+T_{32}+T_{35}+T_{36}+{\mathrm{<figure-callout\; id="13"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{13}+{\mathrm{<figure-callout\; id="23"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{23}+T_{53}+T_{63})----\left(10\right)$

$(T_{41}+T_{42}+T_{45}+T_{46}+{\mathrm{<figure-callout\; id="14"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{14}+{\mathrm{<figure-callout\; id="24"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{24}+T_{54}+T_{64})]$

$M_{\mathrm{rz}}=\frac{R^3}{8(\sin I+\cos I)}[(T_{51}+T_{52}+T_{53}+T_{54}+{\mathrm{<figure-callout\; id="15"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{15}+{\mathrm{<figure-callout\; id="25"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{25}+T_{35}+T_{45})----\left(11\right)$

$(T_{61}+T_{62}+T_{63}+T_{64}+{\mathrm{<figure-callout\; id="16"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{16}+{\mathrm{<figure-callout\; id="26"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{26}+T_{36}+T_{46})]$

M in the formula _Rz, M _Ry, M _RxBe respectively sample three axial remanent magnetizations;

I is magnetic dip normally;

T ₁₃, T ₁₄, T ₁₅, T ₁₆The end face that is respectively Riker mount is 1, its south was respectively 3,4,5,6 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₂₃, T ₂₄, T ₂₅, T ₂₆The end face that is respectively Riker mount is 2, its south was respectively 3,4,5,6 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₃₁, T ₃₂, T ₃₅, T ₃₆The end face that is respectively Riker mount is 3, its south was respectively 1,2,5,6 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₄₁, T ₄₂, T ₄₅, T ₄₆The end face that is respectively Riker mount is 4, its south was respectively 1,2,5,6 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₅₁, T ₅₂, T ₅₃, T ₅₄The end face that is respectively Riker mount is 5, its south was respectively 1,2,3,4 o'clock, four actual measurement magnetic field values that total sound magnetometer is measured;

T ₆₁, T ₆₂, T ₆₃, T ₆₄The end face that is respectively Riker mount is 6, its south was respectively 1,2,3,4 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

F) with gained M in the step e _Rx, M _Ry, M _RzObtain the magnetic declination ф and the magnetic dip I of the remanent magnetization vector of oriented specimen in the substitution following formula ₀:

$\mathrm{\&phi;}={\mathrm{tg}}^{-1}\frac{M_{\mathrm{rx}}}{M_{\mathrm{ry}}}---\left(12\right)$

$I_0={\mathrm{tg}}^{-1}\frac{M_{\mathrm{rz}}}{\sqrt{M_{\mathrm{rx}}^2+M_{\mathrm{ry}}^2}}---\left(13\right).$

Beneficial effect of the present invention is:

Flat survey method of the present invention and device have not only saved the labyrinth of tiltedly surveying device in the prior art, the oblique process of accent and the tiltedly inaccurate error of being brought of accent in different latitude area have also been removed from, because Riker mount upset vibrations of tens times on the dip plane, be easy to make the distance between sample center and following center probe to change to some extent, cause big error to occur; The one-piece construction of flat survey device is simple, firm, is easy to the Riker mount that overturns, and can not produce variable in distance, can improve the precision that magnetic parameter is measured.

Description of drawings

Fig. 1 is the oblique structural representation of this device of mark in the prior art, 11-probe wherein, the 12-pole of popping one's head in, 13-Riker mount, 14-swash plate, 15-movable latch, 16-screw rod, 17-flat board, 18-tripod;

Fig. 2 is the structural representation of flat this device of mark of adopting in the flat survey method of the present invention, 21-resultant field magnetometer wherein, and the 22-Riker mount, the 23-flat board, the 24-pallet, 25-is probe down, 26-probe bracket, the last probe of 27-;

Fig. 3 is the signature of Riker mount face.

Embodiment

Be further described in detail below in conjunction with the flat survey method and the device thereof of accompanying drawing rock of the present invention, specimen of ore magnetic parameter.

Flat survey method of the present invention is with normal geomagnetic total field (T ₀) be decomposed into vertical component magnetic field (Z by magnetic dip (I) ₀) and horizontal component magnetic field (H ₀), promptly

Z ₀＝T ₀sinI (1)

H ₀＝T ₀cosI (2)

Vertical component magnetic field Z ₀With the horizontal component magnetic field H ₀Act on sample simultaneously.

Sense magnetic and original remanent magnetism that sample produces, the resultant field magnetometer (the resultant field magnetometer among the present invention can adopt proton magnetometer, optically pumped magnetometer or superconductive magnetometer etc.) that is positioned at Gauss's second place measures, and is called the unusual Δ T in total magnetic field, has

ΔT＝ΔZsinI+ΔHcosI (3)

Δ Z and Δ H are respectively Z in the formula ₀And H ₀Sample produces under the effect vertical magnetic field and horizontal magnetic field are unusual.

Sample dress is stood in the cubical Riker mount, and box has three axles, makes x axle forward refer to east by left-hand rule, and y axle forward refers to north, and z axle forward is downward, if decided direction during collection of specimens, then the oriented specimen direction should be consistent with y axle forward.3 axial forward box faces are marked with 2,4,6 respectively, and negative sense box face is marked with 1,3,5 respectively.Riker mount is flat on the specimen holder, x axle forward refers to east (being to point to identical box face with the x axle on the Riker mount to be labeled as 2), y axle forward refers to north (being to point to identical box face with the y axle on the Riker mount to be labeled as 4), z axle forward refers to down (being to point to identical box face with the z axle on the Riker mount to be labeled as 6), at this moment, at vertical component magnetic field Z ₀With the horizontal component magnetic field H ₀Effect under, vertical magnetic field Δ Z and horizontal magnetic field Δ H that sample produces are respectively:

$\mathrm{\&Delta;Z}=\frac{m_z}{R^3}=\frac{(K_z{Z}_0+M_{\mathrm{rz}})V}{R^3}---\left(4\right)$

$\mathrm{\&Delta;}{H}_y=\frac{m_y}{R^3}=\frac{(K_y{H}_0+M_{\mathrm{ry}})V}{R^3}---\left(5\right)$

Sample is horizontally rotated 90 ° counterclockwise, the vertical magnetic field Δ Z cotype (4) that sample produces, the horizontal magnetic field Δ H of generation _xFor:

$\mathrm{\&Delta;}{H}_x=\frac{m_x}{R^3}=\frac{(K_x{H}_0+M_{\mathrm{rx}})V}{R^3}---\left(6\right)$

Above in three formulas, m _z, m _y, m _xK _z, K _y, K _xAnd M _Rz, M _Ry, M _RxBe respectively sample three axial magnetic moments, magnetic susceptibility and remanent magnetization, K _zZ ₀Be the axial induced magnetization of z, V is the volume of sample, and R is the distance between sample and the resultant field magnetometer center probe.

By the upper and lower inversion of sample with horizontally rotate 180 °, can get the induced magnetization situation identical or opposite with the remanent magnetization direction, promptly the plus sige in (4), (5), (6) formula changes minus sign into, the magnetic susceptibility K of sample is promptly tried to achieve in (4)～(6) the formula addition that then top (4)～(6) formula and plus sige is changed into minus sign, and (4)～(6) formula that changes top (4)～(6) formula and plus sige into minus sign is subtracted each other and promptly tried to achieve remanent magnetization Mr.Thus, magnetic parameter of the present invention is to try to achieve by the plus and minus calculation between the following formula.

$K=(K_x+K_y+K_z)/3=\frac{R^3}{T_{0}V}(T_0-\frac{1}{24}\underset{1}{\overset{24}{\mathrm{\&Sigma;}}}{T}_{\mathrm{ij}})\&CenterDot;{10}^{-6}\&times;4\mathrm{\&pi;}\&CenterDot;\mathrm{SI}---\left(7\right)$

$M_r=\sqrt{M_{\mathrm{rx}}^2+M_{\mathrm{ry}}^2+M_{\mathrm{rz}}^2}\&CenterDot;{10}^{-3}A/m---\left(8\right)$

As shown in Figure 2, flat survey device of the present invention comprises resultant field magnetometer 21, Riker mount 22, flat board 23 and pallet 24, rock sample or specimen of ore are housed in the Riker mount 22, resultant field magnetometer 21 comprises probe 27, pops one's head in 25 and probe bracket 26 down, between the upper and lower probe and down is connected support by probe bracket 26 respectively between probe and the ground.Dull and stereotyped 23 support and place stably magnetic field normally by pallet 24, and make to be positioned at and aim at magnetic north with the perpendicular vertical line of dull and stereotyped major axis on the flat board, resultant field magnetometer 21 is positioned over the west side or the east side of dull and stereotyped 23 major axis center lines, and and leave the spacing of 1-2mm between the flat board, dull and stereotyped 23 are provided with chute, the cube Riker mount 22 that is built-in with sample is placed on dull and stereotyped 23 the enterprising line slip of chute, keeps following probe 25 centers and Riker mount 22 centers of resultant field magnetometer contour.

Flat survey device solves of the present invention geomagnetic total intensity T0 under magnetization, form after the method by Gauss's second place calculating sample magnetic parameter, flat survey method to concrete sample magnetic parameter describes below, and this method is applicable to the whole world, is not subjected to region or environmental limit.Its concrete steps are as follows:

A) select geomagnetic normal field stably, pallet is settled firmly, adopt compass with dull and stereotyped leveling, and make to be positioned at and aim at magnetic north with the perpendicular vertical line of dull and stereotyped major axis on the flat board, the resultant field magnetometer is placed in the west side or the east side of the center line of dull and stereotyped major axis, resultant field magnetometer and dull and stereotyped spacing are 1-2mm, make the following center probe of resultant field magnetometer and Riker mount center contour, measure to constitute Gauss's second place.

B) read normal geomagnetic total field T by the resultant field magnetometer ₀, the cube Riker mount that is built-in with sample is placed in the dull and stereotyped chute, the slip Riker mount makes the reading of resultant field magnetometer obviously depart from magnetic field value T normally ₀, the distance R between the following center probe of measurement Riker mount center and resultant field magnetometer.

C) keep one of Riker mount to face up, horizontally rotate Riker mount, make four side Chao Nan of Riker mount successively, and record 4 magnetic field values of position, sample four directions of living in by the resultant field magnetometer respectively; The turned upside down Riker mount, make its another side up, record 4 magnetic field values of sample four directions position of living in once more by the resultant field magnetometer respectively, up and till 24 magnetic field values of four sides during, pass through T successively towards south until six difference that the resultant field magnetometer records Riker mount respectively _IjWrite down this 24 magnetic field values respectively, tens i be Riker mount towards top reference numerals, units j is the reference numerals of Riker mount southern side face, six faces are respectively with digital 1-6 sign; For example: actual measurement sample magnetic field T64, the last end face that makes Riker mount is 6, the southern side face is 4, as shown in Figure 3, if want to continue to survey sample magnetic field T61, goes up then that end face is constant, horizontally rotating Riker mount, to make its southern side face be 1, can record.

D) try to achieve the volume V of Riker mount by the length of measuring Riker mount.

E) with the T that records in the steps A ₀, the R that records among the step B, 24 magnetic field values that record among V that records among the step D and the step C substitution following formula respectively draw the magnetic susceptibility K and the remanent magnetization Mr of specimen of ore:

Draw magnetic susceptibility K by following formula (1):

$K=(K_x+K_y+K_z)/3=\frac{R^3}{T_{0}V}(T_0-\frac{1}{24}\underset{1}{\overset{24}{\mathrm{\&Sigma;}}}{T}_{\mathrm{ij}})\&CenterDot;{10}^{-6}\&times;4\mathrm{\&pi;}\&CenterDot;\mathrm{SI}---\left(7\right)$

K in the formula _z, K _y, K _xBe respectively sample three axial magnetic susceptibility;

T _IjFor sample is under the different conditions, the actual measurement magnetic field value that records respectively by the resultant field magnetometer;

I is the end face of Riker mount, and its span is 1-6; J is the southern side face of Riker mount, and its span is 1-6, and its span is four numerical value among the units i;

R is the vertical range between Riker mount and the following center probe; V is the volume of Riker mount; T ₀Be normal geomagnetic total field;

Draw remanent magnetization Mr by following formula (2):

$M_r=\sqrt{M_{\mathrm{rx}}^2+M_{\mathrm{ry}}^2+M_{\mathrm{rz}}^2}\&CenterDot;{10}^{-3}A/m---\left(8\right)$

Wherein:

$M_{\mathrm{rx}}=\frac{R^3}{8(\sin I+\cos I)}[({\mathrm{<figure-callout\; id="13"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{13}+{\mathrm{<figure-callout\; id="14"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{14}+{\mathrm{<figure-callout\; id="15"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{15}+{\mathrm{<figure-callout\; id="16"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{16}+T_{31}+T_{41}+T_{51}+T_{61})----\left(9\right)$

$({\mathrm{<figure-callout\; id="23"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{23}+{\mathrm{<figure-callout\; id="24"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{24}+{\mathrm{<figure-callout\; id="25"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{25}+T_{32}+T_{42}+T_{52}+T_{62})]$

$M_{\mathrm{ry}}=\frac{R^3}{8(\sin I+\cos I)}[(T_{31}+T_{32}+T_{35}+T_{36}+{\mathrm{<figure-callout\; id="13"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{13}+{\mathrm{<figure-callout\; id="23"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{23}+T_{53}+T_{63})----\left(10\right)$

$(T_{41}+T_{42}+T_{45}+T_{46}+{\mathrm{<figure-callout\; id="14"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{14}+{\mathrm{<figure-callout\; id="24"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{24}+T_{54}+T_{64})]$

$M_{\mathrm{rz}}=\frac{R^3}{8(\sin I+\cos I)}[(T_{51}+T_{52}+T_{53}+T_{54}+{\mathrm{<figure-callout\; id="15"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{15}+{\mathrm{<figure-callout\; id="25"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{25}+T_{35}+T_{45})----\left(11\right)$

$(T_{61}+T_{62}+T_{63}+T_{64}+{\mathrm{<figure-callout\; id="16"\; label="T"\; filenames="HSA00000465992300011.png"\; state="\{\{state\}\}">T</figure-callout>}}_{16}+{\mathrm{<figure-callout\; id="26"\; label="T"\; filenames="HSA00000465992300012.png"\; state="\{\{state\}\}">T</figure-callout>}}_{26}+T_{36}+T_{46})]$

M in the formula _Rz, M _Ry, M _RxBe respectively sample three axial remanent magnetizations;

I is magnetic dip normally;

T ₁₃, T ₁₄, T ₁₅, T ₁₆The end face that is respectively Riker mount is 1, its south was respectively 3,4,5,6 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₂₃, T ₂₄, T ₂₅, T ₂₆The end face that is respectively Riker mount is 2, its south was respectively 3,4,5,6 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₃₁, T ₃₂, T ₃₅, T ₃₆The end face that is respectively Riker mount is 3, its south was respectively 1,2,5,6 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₄₁, T ₄₂, T ₄₅, T ₄₆The end face that is respectively Riker mount is 4, its south was respectively 1,2,5,6 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₅₁, T ₅₂, T ₅₃, T ₅₄The end face that is respectively Riker mount is 5, its south was respectively 1,2,3,4 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₆₁, T ₆₂, T ₆₃, T ₆₄The end face that is respectively Riker mount is 6, its south was respectively 1,2,3,4 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured.

F) with gained M in the step e _Rx, M _Ry, M _RzObtain the magnetic declination ф and the magnetic dip I of the remanent magnetization vector of oriented specimen in the substitution following formula ₀:

$\mathrm{\&phi;}={\mathrm{tg}}^{-1}\frac{M_{\mathrm{rx}}}{M_{\mathrm{ry}}}---\left(12\right)$

$I_0={\mathrm{tg}}^{-1}\frac{M_{\mathrm{rz}}}{\sqrt{M_{\mathrm{rx}}^2+M_{\mathrm{ry}}^2}}---\left(13\right).$

Be connected with a computing machine on the resultant field magnetometer 21, each formula in step e and the step F carries out computing by computing machine, thereby obtains magnetic susceptibility K, the remanent magnetization Mr of sample and the magnetic declination ф and the magnetic dip I of remanent magnetization vector ₀The T that records in the steps A ₀Pass to computing machine with 24 magnetic field values that record among the step C by the resultant field magnetometer, the V people who records among R that records among the step B and the step D is for being input in the computing machine.

When the resultant field magnetometer among the present invention is applied in flat survey method and the flat survey device, adopt proton magnetometer usually, also can select other resultant field magnetometers such as optically pumped magnetometer or superconductive magnetometer as required for use.

Points for attention in the flat mark basis:

(1) the general requirement of test specimen should be handled by " ground high-precision magnetic survey technical tutorial " appendix requirement.

(2) flat this device of mark of the present invention is the determinator of the north orientation Gauss second place.As shown in Figure 2, between resultant field magnetometer and the sample flat board very little distance should be arranged, the vibrations of avoiding sample to stir the resultant field magnetometer is brought are disturbed.

(3) employing Riker mount face mark as shown in Figure 3.

High-intensity magnetic field (n * 10 during (four) for fear of resultant field magnetometer survey magnetic ⁴A/m) polarization is to the magnetized lingering effect of sample, and the resultant field magnetometer sampling time of should extending is carried out the collection of magnetic field data.

(5) method of avoiding negative magnetic susceptibility to occur:

1) select uniform rock of quality or ore to make sample, sample shape need rule is avoided the inhomogeneous and out-of-shape of magnetic as far as possible and is caused that sample turns upside down, remanent magnetism can not be offset, produce the drawback that the magnetic susceptibility negative value occurs;

2) keep the distance between sample and the probe enough far away, making sample is dipole magnetic field.

Should be noted that at last: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present invention.

Claims (6)

1. a resultant field magnetometer is measured rock, the flat survey device of specimen of ore magnetic parameter, this device comprises resultant field magnetometer (21), Riker mount (22), dull and stereotyped (23) and pallet (24), described Riker mount is equipped with rock sample or specimen of ore in (22), described resultant field magnetometer (21) comprises probe (27), following probe (25) and probe bracket (26), it is characterized in that: described flat board (23) supports and places stably magnetic field normally by pallet (24), and make to be positioned at and aim at magnetic north with the perpendicular vertical line of dull and stereotyped major axis on the flat board, described resultant field magnetometer (21) is positioned over a side of flat board (23) major axis, described flat board (23) is provided with chute, the Riker mount (22) that is built-in with sample is placed on the enterprising line slip of chute of flat board (23), keeps following probe (25) center of described resultant field magnetometer and Riker mount (22) center contour.

2. resultant field magnetometer as claimed in claim 1 is measured the flat survey device of rock, specimen of ore magnetic parameter, and it is characterized in that: described resultant field magnetometer (21) is positioned over the west side or the east side of dull and stereotyped major axis center line, and and flat board between leave the spacing of 1-2mm.

3. resultant field magnetometer as claimed in claim 1 or 2 is measured the flat survey device of rock, specimen of ore magnetic parameter, and it is characterized in that: described sample is contained in the cube Riker mount (22), and six box faces of Riker mount (22) are used digital 1-6 mark respectively.

4. a resultant field magnetometer is measured the flat survey method of rock, specimen of ore magnetic parameter, it is characterized in that: the device that this method adopts comprise have upper and lower probe (27,25) resultant field magnetometer (21), be built-in with the Riker mount (22) of sample and, comprise the steps: by the flat board (23) that pallet (24) supports

A) select geomagnetic normal field stably, pallet (24) is settled firmly, adopt compass with flat board (23) leveling, and make to be positioned at and aim at magnetic north with the perpendicular vertical line of dull and stereotyped major axis on the flat board, resultant field magnetometer (21) is placed in a side of flat board (23), make between resultant field magnetometer and the flat board and leave spacing, make following probe (25) center of resultant field magnetometer and Riker mount (22) center contour, measure to constitute Gauss's second place;

B) read normal geomagnetic total field T by the resultant field magnetometer ₀, the Riker mount that is built-in with sample is placed in the dull and stereotyped chute, the slip Riker mount makes the reading of resultant field magnetometer obviously depart from magnetic field value T normally ₀, measure distance R in the heart in the following probe (25) of Riker mount (22) center and resultant field magnetometer;

C) keep one of Riker mount to face up, horizontally rotate Riker mount (22), make four side Chao Nan of Riker mount successively, and record 4 magnetic field values of position, sample four directions of living in by the resultant field magnetometer respectively; The turned upside down Riker mount, make its another side up, record 4 magnetic field values of sample four directions position of living in once more by the resultant field magnetometer respectively, up and till 24 magnetic field values of four sides during, pass through T successively towards south until six difference that the resultant field magnetometer records Riker mount respectively _IjWrite down this 24 magnetic field values respectively;

D) the volume V of measurement Riker mount (22);

E) with the T that records in the steps A ₀, the R that records among the step B, 24 magnetic field values that record among V that records among the step D and the step C substitution following formula respectively draw the magnetic susceptibility K and the remanent magnetization Mr of sample:

Draw magnetic susceptibility K by following formula (1):

$K=(K_x+K_y+K_z)/3=\frac{R^3}{T_{0}V}(T_0-\frac{1}{24}\underset{1}{\overset{24}{\mathrm{\&Sigma;}}}{T}_{\mathrm{ij}})\&CenterDot;{10}^{-6}\&times;4\mathrm{\&pi;}\&CenterDot;\mathrm{SI}---\left(7\right)$

K in the formula _z, K _y, K _xBe respectively sample three axial magnetic susceptibility;

T _IjFor sample is under the different conditions, by the actual measurement magnetic field value that the resultant field magnetometer records respectively, tens i is the end face of Riker mount; Units j is the southern side face of Riker mount;

R is the vertical range between Riker mount and the following center probe; V is the volume of Riker mount; T ₀Be normal geomagnetic total field;

Draw remanent magnetization Mr by following formula (2):

$M_r=\sqrt{M_{\mathrm{rx}}^2+M_{\mathrm{ry}}^2+M_{\mathrm{rz}}^2}\&CenterDot;{10}^{-3}A/m---\left(8\right)$

Wherein:

$M_{\mathrm{rx}}=\frac{R^3}{8(\sin I+\cos I)}[(T_{13}+T_{14}+T_{15}+T_{16}+T_{31}+T_{41}+T_{51}+T_{61})----\left(9\right)$

$(T_{23}+T_{24}+T_{25}+T_{32}+T_{42}+T_{52}+T_{62})]$

$M_{\mathrm{ry}}=\frac{R^3}{8(\sin I+\cos I)}[(T_{31}+T_{32}+T_{35}+T_{36}+T_{13}+T_{23}+T_{53}+T_{63})----\left(10\right)$

$(T_{41}+T_{42}+T_{45}+T_{46}+T_{14}+T_{24}+T_{54}+T_{64})]$

$M_{\mathrm{rz}}=\frac{R^3}{8(\sin I+\cos I)}[(T_{51}+T_{52}+T_{53}+T_{54}+T_{15}+T_{25}+T_{35}+T_{45})----\left(11\right)$

$(T_{61}+T_{62}+T_{63}+T_{64}+T_{16}+T_{26}+T_{36}+T_{46})]$

M in the formula _Rz, M _Ry, M _RxBe respectively sample three axial remanent magnetizations;

I is magnetic dip normally;

T ₁₃, T ₁₄, T ₁₅, T ₁₆The end face that is respectively Riker mount is 1, its south was respectively 3,4,5,6 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₂₃, T ₂₄, T ₂₅, T ₂₆The end face that is respectively Riker mount is 2, its south was respectively 3,4,5,6 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₃₁, T ₃₂, T ₃₅, T ₃₆The end face that is respectively Riker mount is 3, its south was respectively 1,2,5,6 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₄₁, T ₄₂, T ₄₅, T ₄₆The end face that is respectively Riker mount is 4, its south was respectively 1,2,5,6 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₅₁, T ₅₂, T ₅₃, T ₅₄The end face that is respectively Riker mount is 5, its south was respectively 1,2,3,4 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

T ₆₁, T ₆₂, T ₆₃, T ₆₄The end face that is respectively Riker mount is 6, its south was respectively 1,2,3,4 o'clock, four actual measurement magnetic field values that the resultant field magnetometer is measured;

F) with gained M in the step e _Rx, M _Ry, M _RzObtain the magnetic declination ф and the magnetic dip I of the remanent magnetization vector of oriented specimen in the substitution following formula ₀:

$\mathrm{\&phi;}={\mathrm{tg}}^{-1}\frac{M_{\mathrm{rx}}}{M_{\mathrm{ry}}}---\left(12\right)$

$I_0={\mathrm{tg}}^{-1}\frac{M_{\mathrm{rz}}}{\sqrt{M_{\mathrm{rx}}^2+M_{\mathrm{ry}}^2}}---\left(13\right)$

5. resultant field magnetometer as claimed in claim 4 is measured the flat survey method of rock, specimen of ore magnetic parameter, and it is characterized in that: described resultant field magnetometer (21) is positioned over the west side or the east side of dull and stereotyped major axis center line, and and flat board between leave the spacing of 1-2mm.

6. measure the flat survey method of rocks, specimen of ore magnetic parameter as claim 4 or 5 described resultant field magnetometers, it is characterized in that: described sample is contained in the cube Riker mount (22), and six box faces of Riker mount (22) are used digital 1-6 mark respectively.

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