CN109356585B - Method for judging state of metal sulfide ore body - Google Patents
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- CN109356585B CN109356585B CN201811367396.8A CN201811367396A CN109356585B CN 109356585 B CN109356585 B CN 109356585B CN 201811367396 A CN201811367396 A CN 201811367396A CN 109356585 B CN109356585 B CN 109356585B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 229910052976 metal sulfide Inorganic materials 0.000 title claims abstract description 15
- 230000002159 abnormal effect Effects 0.000 claims abstract description 31
- 238000005553 drilling Methods 0.000 claims abstract description 7
- 238000005259 measurement Methods 0.000 claims description 26
- 230000005484 gravity Effects 0.000 claims description 19
- 230000010287 polarization Effects 0.000 claims description 16
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 6
- 230000000007 visual effect Effects 0.000 claims description 6
- 238000012937 correction Methods 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 230000002596 correlated effect Effects 0.000 claims description 2
- 230000000875 corresponding effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 239000010931 gold Substances 0.000 claims description 2
- 229910052737 gold Inorganic materials 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims description 2
- 230000000704 physical effect Effects 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 230000005284 excitation Effects 0.000 abstract description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract 1
- 239000011707 mineral Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- UXNBTDLSBQFMEH-UHFFFAOYSA-N [Cu].[Zn].[Pb] Chemical compound [Cu].[Zn].[Pb] UXNBTDLSBQFMEH-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009933 burial Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004579 marble Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/22—Methods of underground mining; Layouts therefor for ores, e.g. mining placers
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Remote Sensing (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a method for judging the occurrence of a metal sulfide ore body, which comprises the following steps: A. judging the types and the types of the metal sulfide mineral deposits which are possibly produced according to the geological background; B. inferring geophysical characteristics of the metal sulfide ore body; C. launch 1:5 thousand, 1: measuring a 2-thousand excitation combined profile, and arranging area geophysical prospecting work when necessary; D. and (4) understanding the abnormal characteristics of the combined profile in detail, and judging the occurrence of the metal sulfide ore body according to the abnormal characteristics. By using the method, the problem that the ore body of the metal sulfide in a shallow coverage area is unknown or the ore body of the metal sulfide is unknown, the ore body is determined by using the cross drilling, the exploration cost is saved, and the ore finding efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of geological exploration, and particularly relates to a method for judging the occurrence of a metal sulfide ore body.
Background
The ore body appearance is an important factor of spatial distribution of the ore body, and comprises the ore body strike, inclination, dip angle, lateral camber, dip angle and the like. The spatial position of the ore body produced in the crust of the earth. Generally comprising: production form elements of the ore body, namely the trend, the inclination, the dip angle, the lateral relief angle and the dip angle of the ore body; the burying depth of the ore body; thirdly, the relationship between the ore body and the strata, the sheet reason and the like; the spatial position of the ore body and the surrounding rock; the relationship between the ore body and the structure, etc. Understanding the nature of the ore body is closely related to the exploration and reasonable exploitation of the deposit. Generalized attitude also includes the construction location and burial conditions of the ore body production.
The problem of judging the ore body occurrence of different types and different ore species can be solved through geophysical prospecting. By the method, reverse drilling in construction can be avoided, the problem of judging the ore body occurrence can be rapidly solved by using different geophysical prospecting methods, and the production cost is reduced.
Disclosure of Invention
The invention aims to provide a method for judging the occurrence of a metal sulfide ore body.
The specific technical scheme is as follows:
a method for judging the occurrence of metal sulfide ore bodies comprises the following steps:
A. judging the characteristics of sulfide ore bodies of different types of different ore types according to the geological background;
B. with the purpose of observing the abnormal induced polarization caused by the ore body and deducing the ore body occurrence, the method comprises the following steps of 1:5 thousand, 1:2 thousand combined profile measurement, observing the change condition of the positive and negative intersection points of the view polarizability abnormal curve measured by AMN infinity and infinity MNB above the ore body part, and deducing the ore body occurrence;
C. if the ore body occurrence cannot be judged by developing the combined profile, 1:2 thousand high-precision magnetic method measurement or 1:2 thousand high-precision gravity measurement can be further developed by combining the magnetic properties or density difference characteristics of the ore body and the surrounding rock, and the ore body occurrence is judged by performing combined inversion on an abnormal curve and a two-degree half-gravity magnetic profile;
D. and (5) verifying by drilling to determine the ore body attitude.
Further, the ratio of 1:5 thousand to 1: the 2 thousand combined profile measurement includes the following aspects: the method adopts a point distance of 10 meters or 5 meters to utilize dual-frequency RTK positioning, an infinite pole can use a handheld GPS to carry out positioning, an advanced WDJS-3 induced polarization instrument is used for measuring apparent resistivity and apparent polarization rate parameters, and technical parameters of field construction are determined by the test result of a known exploration line section. And (4) separating abnormal information showing different occurrence statuses through a reasonable data processing technology and a physical property parameter result, and extracting and summarizing the qualitatively deduced occurrence statuses.
Further, the ratio of 1:5 thousand to 1: the analysis of the 2 thousand joint profile measurement maps comprises: apparent polarizability etaAS、ηBSThe shape of the polarizer is judged by the area between the two sides of the curve intersection point, the side with larger area is the extending direction of the polarizer, and the polarization rate can be seen by different AO and BO polar distancesηAS、ηBSJudging the occurrence and depth of the polarizer by curve intersection point position connection method, and observing the polarizability eta with the increase of AO and BO distanceAS、ηBSAnd moving the intersection point of the curves to a large-size point of the section, and judging that the polarizer inclines to the north, otherwise, the polarizer inclines to the south. If the visual polarization rate eta is increased along with the increase of AO and BO distancesAS、ηBSThe intersections of the curves alternately appear etaAS、ηBSThe area between the two sides of the curve intersection point is sharply reduced, which shows that the depth of the polarizer is limited, and the deep ore exploration space is limited.
Further, the 1:2 thousand high-precision magnetic measurement in the step C comprises the following steps: the target magnetic anomaly is measured by a high-precision magnetic method at a point distance of 5 meters, a magnetic inversion graph is compiled, 1:2 thousand high-precision gravity measurement can be further carried out, and the ore body occurrence can be accurately judged by carrying out 3 combination methods above inversion work C.
Further, the 1:2 thousand high-precision magnetic measurement in the step C comprises the following steps: the method comprises the steps of performing high-precision magnetic measurement by using a double-frequency RTK positioning device at a point distance of 5m and an WCZ-1 proton magnetometer, calculating an abnormal value through various corrections, combining magnetic material data, and comprehensively deducing spatial distribution characteristics of an ore body by using steepness degrees on two sides of an abnormal curve peak value and an inversion result of inversion software GeoExpl and a tangent method to determine the attitude.
Further, the 1:2 thousand high-precision magnetic measurement in the step C comprises the following steps: two sides of the peak value of the magnetic anomaly curve, one side of the slow anomaly curve is the extending direction of the magnetic body, and the average value point position between the maximum value delta T and the minimum value delta T of the magnetic anomaly is the central earth surface projection position of the hidden magnetic body.
Further, the 1:2 thousand high-precision gravity measurement in the step C comprises the following steps: the method comprises the steps of performing high-precision gravity measurement by using a dual-frequency RTK positioning at a point distance of 5m and a CG-5 type gravimeter, calculating a Bragg gravity abnormal value and a residual gravity abnormal value through various corrections, combining physical density characteristics, and performing inversion by using gravity abnormal curve characteristics and inversion software RGIS (proportion of absolute difference of absolute values of gravity) to display the vertical ore body abnormal state as corresponding to two sides of a peak shape, deducing spatial distribution characteristics of the ore body and determining the shape of the ore body, wherein the vertical ore body abnormal state is characterized in that the inclination extension of the ore body is positively correlated with the gravity amplitude.
Furthermore, the process of forming the ore body is complex and changeable, the ore species are various, multiple methods are cooperated in the exploration process to search for gravity, electricity and electricity homologous abnormality, and the geological comprehensive analysis can obtain the breakthrough of finding the ore.
Further, the sulfide ore body is a vein-like or lamellar-like sulfide ore body of gold ore, copper ore and lead-zinc ore.
Compared with the prior art, the invention has the beneficial effects that:
the method can overcome the defect that the attitude of the ore body of the metal sulfide is not clear in a shallow coverage area or the attitude of the ore body of the metal sulfide is determined by using the cross drilling, the exploration cost is saved, the method is economic and effective, and the success rate of finding the ore can be improved.
Drawings
FIG. 1 is a flow chart for determining ore body attitude;
fig. 2 is an example diagram of determining ore body occurrence according to a 1:5 thousand joint profile in a treler highler area in an embodiment of the present invention, for example, fig. 2A is a combined profile method visual polarization rate anomaly curve graph (AO ═ BO ═ 150m), fig. 2B is a combined profile method visual polarization rate anomaly curve graph (AO ═ BO ═ 300m), fig. 2C is a high-precision magnetic measurement Δ T anomaly curve graph, and fig. 2D is a v ore zone 7 exploration line profile curve.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and examples.
Referring to fig. 1-2, the section has two distinct groups of abnormal segments, specifically interpreted as follows:
148-164 points abnormal section
1. Abnormal characteristics: medium and high polarization
2. Intersection position: point 148
3. Area enclosed by curves at two sides of intersection point: the north side area is larger than the south side area
4. The relation between the abnormal peak value of the visual polarization rate and the polar distance is as follows: with the increase of the polar distance, the north area of the intersection point is slightly larger than the south area
The polaribody causing the excitation abnormity inclines to the north, the yield trend is steep along with the increase of the depth, ZKV-703 drilling verification shows that three layers of iron polymetallic ore bodies with the accumulated thickness of 10.25 meters are produced in the silicalite zone at the edge of the silicalite and the marble, the ore bodies incline to the north, and the yield in the deep part is steep.
(II) 178-196 points abnormal section
1. Abnormal characteristics: medium and high polarization
2. Intersection position: point 188 (point)
3. Area enclosed by curves at two sides of intersection point: the south side area is larger than the north side area
4. The relation between the abnormal peak value of the visual polarization rate and the polar distance is as follows: as the pole pitch increases, the intersection point moves to the south
The polarizer causing the induced polarization abnormity inclines to the south, the occurrence trend is steep along with the increase of the depth, ZKV-702 drilling verification shows that a layer of lead-zinc ore body with the grade of Pb1.19 percent and the thickness of Zn2.46 percent and 3.64 meters is found in a place with the vertical depth of 100 meters, and the ore body inclines to the south.
The shape of the polarizer is judged with higher reliability through the size of the area clamped by two sides of the intersection point and the intersection point positions of different polar distances, the polar distances are determined through experiments of a field known section, and the effect is better when AO and BO are 150m and 300m, MN is 10m and 20m, the power supply period is 32s, and the power-off delay is 200 ms.
Description of the drawings: the device of the combined section method is AMN infinity MNB, infinite pole power supply points are fixed when data are collected, A, B power supply point transformation is carried out, AO is the distance between a power supply point A and the midpoint 0 of MN, BO is the distance between the power supply point B and the midpoint 0 of MN, generally, AO is three groups of pole distances selected for BO, and the device is determined according to actual effects in field construction engineering.
Two groups of productions of the copper-lead-zinc ore body of the Taylor high-Lele iron are accurately judged according to the method.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and any simple modifications or equivalent substitutions of the technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present invention are within the scope of the present invention.
Claims (2)
1. A method for judging the occurrence of a metal sulfide ore body is characterized by comprising the following steps:
A. judging sulfide ore body points of different types of ores according to geological backgrounds;
B. with the purpose of observing the abnormal induced polarization caused by the ore body and deducing the ore body occurrence, the method comprises the following steps of 1:5 thousand, 1:2 thousand combined profile measurement, observing the change condition of the positive and negative intersection points of the view polarizability abnormal curve measured by AMN infinity and infinity MNB above the ore body part, and deducing the ore body occurrence;
C. if the ore body occurrence cannot be judged by developing the combined profile, further performing 1:2 thousand high-precision magnetic method measurement or 1:2 thousand high-precision gravity measurement by combining the magnetic properties or density difference characteristics of the ore body and the surrounding rock, and judging the ore body occurrence by performing combined inversion on an abnormal curve and a two-degree half-gravity magnetic profile;
D. verifying and determining the ore body attitude by utilizing drilling;
1:5 thousand in the step B, 1: the 2 thousand combined profile measurement includes the following aspects: the method comprises the steps of positioning by using a dual-frequency RTK (real-time kinematic) at a point distance of 10 meters or 5 meters, positioning by using a handheld GPS (global positioning system) at an infinite distance, measuring apparent resistivity and apparent polarization rate parameters by using an advanced WDJS-3 induced polarization instrument, separating abnormal information displaying different occurrence forms through a reasonable data processing technology and a physical property parameter result, and extracting and summarizing the qualitatively inferred occurrence forms;
1:5 thousand in the step B, 1: the analysis of the 2 thousand joint profile measurement maps comprises: apparent polarizability etaAS、ηBSDetermining the occurrence of the polarizer by the area between two sides of the curve intersection point, wherein the side with larger area is the extending direction of the polarizer, or the apparent polarizability eta is determined by the polar distances of different AO and BOAS、ηBSJudging the occurrence and depth of the polarizer by curve intersection point position connection method, and observing the polarizability eta with the increase of AO and BO distanceAS、ηBSMoving the curve intersection point to a section large-size point, and judging that the polarizer inclines to the north, otherwise, the polarizer inclines to the south; if the visual polarization rate eta is increased along with the increase of AO and BO distancesAS、ηBSThe intersections of the curves alternately appear etaAS、ηBSThe area between the two sides of the curve intersection point is sharply reduced, which shows that the buried depth of the polarizer is limitedThe deep prospecting space is limited;
the 1:2 thousand high-precision magnetic measurement in the step C comprises the following steps: high-precision magnetic method measurement is carried out by adopting a point distance of 5 meters aiming at target magnetic anomaly, a magnetic method inversion graph is compiled, 1:2 thousand high-precision gravity measurement can be further carried out, inversion work is carried out, and the occurrence of ore bodies is judged;
the 1:2 thousand high-precision magnetic measurement in the step C comprises the following steps: performing high-precision magnetic measurement by using a double-frequency RTK positioning and WCZ-1 proton magnetometer at a point distance of 5m, calculating an abnormal value through various corrections, combining magnetic material data, and comprehensively deducing spatial distribution characteristics of an ore body by using steepness degrees at two sides of an abnormal curve peak value and an inversion result of inversion software GeoExpl and a tangent method to determine the shape of the ore body;
the 1:2 thousand high-precision magnetic measurement in the step C comprises the following steps: two sides of the peak value of the magnetic anomaly curve, wherein one side of the slow anomaly curve is the extending direction of the magnetic body, and the average value point position between the maximum value delta T and the minimum value delta T of the magnetic anomaly is the central earth surface projection position of the concealed magnetic body;
the 1:2 thousand high-precision gravity measurement in the step C comprises the following steps: the method comprises the steps of performing high-precision gravity measurement by using a dual-frequency RTK positioning at a point distance of 5m and a CG-5 type gravimeter, calculating a Bragg gravity abnormal value and a residual gravity abnormal value through various corrections, combining physical density characteristics, and performing inversion by using gravity abnormal curve characteristics and inversion software RGIS (proportion of absolute difference of absolute values of gravity) to display the vertical ore body abnormal state as corresponding to two sides of a peak shape, deducing spatial distribution characteristics of the ore body and determining the shape of the ore body, wherein the vertical ore body abnormal state is characterized in that the inclination extension of the ore body is positively correlated with the gravity amplitude.
2. The method of determining the pay of a metal sulfide ore body according to claim 1, wherein the sulfide ore body is a vein-like or lamellar-like sulfide ore body of gold ore, copper ore, lead-zinc ore.
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| CN110208867A (en) * | 2019-05-10 | 2019-09-06 | 中南大学 | A kind of three-dimensional electrical prospecting method based on composite profile |
| CN110208868A (en) * | 2019-05-10 | 2019-09-06 | 中南大学 | A kind of two-dimentional electrical prospecting method based on composite profile |
| CN110609331A (en) * | 2019-09-24 | 2019-12-24 | 中国地质调查局西安地质调查中心 | Hidden deposition type manganese-rich ore identification method |
| CN110674606B (en) * | 2019-10-10 | 2022-10-14 | 长沙有色冶金设计研究院有限公司 | Method for calculating ore body attitude |
| CN117911402B (en) * | 2024-03-15 | 2024-05-31 | 宝鸡铭扬泵业有限公司 | Water pump impeller appearance defect detection method and system |
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