CN108680965B - Rapid ore finding method suitable for shallow coverage area of Gobi desert - Google Patents
Rapid ore finding method suitable for shallow coverage area of Gobi desert Download PDFInfo
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- CN108680965B CN108680965B CN201810330421.9A CN201810330421A CN108680965B CN 108680965 B CN108680965 B CN 108680965B CN 201810330421 A CN201810330421 A CN 201810330421A CN 108680965 B CN108680965 B CN 108680965B
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Abstract
The invention discloses a rapid prospecting method suitable for a shallow coverage area of a Gobi desert, which comprises the following steps: a: selecting a favorable ore-forming area; b: compiling a surface geological map; c: compiling 1: 1 ten thousand high-precision magnetic measurement deduces the structure and explains the picture; d: compiling 1: 1 ten thousand soil measurement abnormal graph and an inferred structure interpretation graph; e: compiling 1: 1, measuring a visual polarizability contour map, a visual resistivity contour map and an inferred structure interpretation map by using a ladder in the universal excitation; f: compiling 1: 1 ten thousand pit gamma energy spectrum measurement uranium, thorium, potassium, main track isoline plan and inference structure interpretation chart; g: compiling a geological structure lithology graph of bedrock in a mining area; h: tracing a mineralization and alteration zone on the earth surface; i: determining the position of a surface groove exploration project; j: determining a theoretical coordinate value of the position of the drill hole; k: installing a core drilling machine; l: obtaining a rock core in a whole hole; m: and (4) sampling and analyzing by splitting to obtain grade and spatial position data. The method can comprehensively collect the geological data of the ground, comprehensively research the mineralizing geological conditions and improve the efficiency.
Description
Technical Field
The invention belongs to the technical field of prospecting, and particularly relates to a rapid prospecting method suitable for a shallow desert coverage area of Gobi in northern China.
Background
With the improvement of the exploration degree, the ore exploration in the shallow coverage area gradually becomes a key part for breakthrough of the ore exploration. The shallow coverage area of the gobi desert is characterized by serious coverage of the fourth system of the earth surface, dry climate and large evaporation capacity, and a calcareous layer is often formed on the surface layer, thereby providing a challenge for an ore searching method taking chemical exploration as a main means. In the prior art, geological conditions are found out through surface map filling, chemical exploration anomalies are obtained through chemical exploration sampling, the anomalies are sequenced, and anomaly detection is started. In the process, the high-full exception is often taken as the main exception, and the weak-small exception is ignored. The working method is single, the geological data of the ground can not be comprehensively collected, the geological condition of the mine can be comprehensively researched, and the mine finding effect is general.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides a method for quickly finding the mineral in the shallow coverage area of the Gobi desert, and beneficial mineral-forming zones are defined by screening from mineral-forming geological conditions and extracting geophysical prospecting, chemical prospecting and remote sensing alteration information.
In order to achieve the purpose, the invention adopts the technical scheme that:
a: selecting an advantageous mineralization area, selecting an area containing an ore layer position, an external rock mass contact zone and a structural development part, and combining area geophysical prospecting remote sensing alteration information to serve as a powerful mineralization area;
b: compiling a surface geological map, and developing a strong mineralization area selected in the step A by the following steps of 1: 1 ten thousand geological measurements are carried out, a structural lithology graph is filled, and a spectrum or chemical analysis sample is collected at a position which can be identified by naked eyes or has strong alteration;
c: compiling 1: 1 ten thousand high-precision magnetic survey deducing structure interpretation maps, designing a survey line for the powerful ore forming area selected in the step A through Beidou or GPS navigation software, laying the high-precision magnetic survey line perpendicular to the trend of the main ore forming zone, carrying out various kinds of measurement along the survey line, obtaining various kinds of measurement data, carrying out computer data processing, forming a high-precision magnetic survey delta T isoline plane map, a high-precision magnetic survey delta T polar isoline plane map and a high-precision polar delta T azimuth derivative map, deducing the approximate position and the occurrence of an ore control fracture according to the characteristics of a magnetic field and magnetic anomaly, and compiling a high-precision magnetic survey geological structure deducing interpretation map of an ore area;
d: compiling 1: 1 ten thousand soil measurement abnormal graphs and inferred structure interpretation graphs, and the same measurement line in the same range as the step C, developing 1: 1 ten thousand soil measurements, resulting in a 1: 1 ten thousand soil measurement single element abnormal graph, comprehensive abnormal graph and structure inference interpretation graph;
e: compiling 1: 1, taking a contour map of apparent polarizability, a contour map of apparent resistivity and an inferred structure interpretation map of the gradient measurement in the universal excitation, taking the same measuring line in the same range as the step C, and compiling 1: 1, measuring a visual polarizability contour map, a visual resistivity contour map and an inferred structure interpretation map by using a ladder in the universal excitation;
f: compiling 1: 1, measuring a uranium, thorium, potassium and main track isoline plan and deducing a structure interpretation chart by using a gamma energy spectrum in a ten thousand pits, and compiling 1: 1, measuring a visual polarizability contour map, a visual resistivity contour map and an inferred structure interpretation map by using a ladder in the universal excitation;
g: compiling a geological structure-lithology diagram of the bedrock in the mining area, comprehensively analyzing high-precision magnetic measurement, soil measurement, power-exciting elevator measurement and in-pit gamma energy spectrum measurement result graphs, determining a more accurate ore control fracture position by combining surface alteration information, compiling the geological structure-lithology diagram of the bedrock in the mining area and determining an optimal ore forming section;
h: tracing a surface mineralization alteration zone, mainly inspecting high-value points with the physicochemical detection abnormity high-value points as guidance, wherein Au is more than 10ppb, W is more than 30ppm, Sb is more than 240ppm and U is more than 10ppm, carefully performing mineralization observation within the range of the high-value points of 100m, collecting chemical analysis samples for mineralization clues, and analyzing the chemical analysis samples into mineral elements;
i: determining the position of the surface channel sounding engineering, and laying a surface channel sounding engineering control mineralization zone according to the optimal mineralization section determined in the step G and combining surface mineralization clues;
j: determining a theoretical coordinate value of the position of the drill hole, and determining the theoretical coordinate value of the position of the drill hole for the mineralization zone determined in the step I;
k: installing a core drilling machine, and determining the position of the drill hole by using a measuring instrument for positioning according to the theoretical coordinate value of the position of the drill hole determined in the step J to finish the installation of the core drilling machine;
l: acquiring a rock core in a full hole, using the rock core drilling machine in the step K, adopting a small-caliber rock core drilling machine to perform drilling construction, drilling through the ore control fracture and an ore body existing in the ore control fracture, acquiring the rock core in the full hole, and sealing the full hole after the hole is finished;
m: and D, performing core splitting sampling on the rock core obtained in the step L to obtain the spatial position of the ore body and the grade change data of the ore body.
The invention has the following beneficial effects: according to the invention, by screening from the mineralizing geological conditions and extracting geophysical prospecting, chemical prospecting and remote sensing alteration information, the beneficial mineralizing zone is defined, the geological data can be comprehensively collected, the mineralizing geological conditions can be comprehensively researched, and the mineral prospecting efficiency can be improved; aiming at special geological conditions in the gobi desert area, comprehensive methods such as geology, geophysical prospecting and chemical prospecting are adopted for prospecting, particularly, the comprehensive abnormal detection is mainly used under the common condition, and the abnormal weakening under the special conditions of the gobi is ignored; meanwhile, the deep fracture and the abnormal display of geologic bodies can be further enhanced by adopting the gamma energy spectrum measurement in the pit, and the gamma measurement method for the traditional metal mineral products is firstly proposed to mainly provide support for the fracture of the formed ore or the inference of important interfaces and the occurrence states, provide more sufficient geophysical prospecting information for comprehensively constructing the lithologic diagram, and the method is suitable for the traditional metal mineral and radioactive mineral products in the Gobi desert area.
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FIG. 1 is a flow chart of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
a quick prospecting method suitable for a shallow coverage area of a Gobi desert comprises the following steps:
a: selecting an advantageous mineralization area, selecting an area containing an ore layer position, an external rock mass contact zone and a structural development part, and combining area geophysical prospecting remote sensing alteration information to serve as a powerful mineralization area;
b: compiling a surface geological map, and developing a strong mineralization area selected in the step A by the following steps of 1: 1 ten thousand geological measurements are carried out, a structural lithology graph is filled, and a spectrum or chemical analysis sample is collected at a position which can be identified by naked eyes or has strong alteration;
c: compiling 1: 1 ten thousand high-precision magnetic survey deducing structure interpretation maps, designing a survey line for the powerful ore forming area selected in the step A through Beidou or GPS navigation software, laying the high-precision magnetic survey line perpendicular to the trend of the main ore forming zone, carrying out various kinds of measurement along the survey line, obtaining various kinds of measurement data, carrying out computer data processing, forming a high-precision magnetic survey delta T isoline plane map, a high-precision magnetic survey delta T polar isoline plane map and a high-precision polar delta T azimuth derivative map, deducing the approximate position and the occurrence of an ore control fracture according to the characteristics of a magnetic field and magnetic anomaly, and compiling a high-precision magnetic survey geological structure deducing interpretation map of an ore area;
d: compiling 1: 1 ten thousand soil measurement abnormal graphs and inferred structure interpretation graphs, and the same measurement line in the same range as the step C, developing 1: 1 ten thousand soil measurements, resulting in a 1: 1 ten thousand soil measurement single element abnormal graph, comprehensive abnormal graph and structure inference interpretation graph;
e: compiling 1: 1, taking a contour map of apparent polarizability, a contour map of apparent resistivity and an inferred structure interpretation map of the gradient measurement in the universal excitation, taking the same measuring line in the same range as the step C, and compiling 1: 1, measuring a visual polarizability contour map, a visual resistivity contour map and an inferred structure interpretation map by using a ladder in the universal excitation;
f: compiling 1: 1, measuring a uranium, thorium, potassium and main track isoline plan and deducing a structure interpretation chart by using a gamma energy spectrum in a ten thousand pits, and compiling 1: 1, measuring a visual polarizability contour map, a visual resistivity contour map and an inferred structure interpretation map by using a ladder in the universal excitation;
g: compiling a geological structure-lithology diagram of the bedrock in the mining area, comprehensively analyzing high-precision magnetic measurement, soil measurement, power-exciting elevator measurement and in-pit gamma energy spectrum measurement result graphs, determining a more accurate ore control fracture position by combining surface alteration information, compiling the geological structure-lithology diagram of the bedrock in the mining area and determining an optimal ore forming section;
h: tracing a surface mineralization alteration zone, mainly inspecting high-value points with the physicochemical detection abnormity high-value points as guidance, wherein Au is more than 10ppb, W is more than 30ppm, Sb is more than 240ppm and U is more than 10ppm, carefully performing mineralization observation within the range of the high-value points of 100m, collecting chemical analysis samples for mineralization clues, and analyzing the chemical analysis samples into mineral elements;
i: determining the position of the surface channel sounding engineering, and laying a surface channel sounding engineering control mineralization zone according to the optimal mineralization section determined in the step G and combining surface mineralization clues;
j: determining a theoretical coordinate value of the position of the drill hole, and determining the theoretical coordinate value of the position of the drill hole for the mineralization zone determined in the step I;
k: installing a core drilling machine, and determining the position of the drill hole by using a measuring instrument for positioning according to the theoretical coordinate value of the position of the drill hole determined in the step J to finish the installation of the core drilling machine;
l: acquiring a rock core in a full hole, using the rock core drilling machine in the step K, adopting a small-caliber rock core drilling machine to perform drilling construction, drilling through the ore control fracture and an ore body existing in the ore control fracture, acquiring the rock core in the full hole, and sealing the full hole after the hole is finished;
m: and D, performing core splitting sampling on the rock core obtained in the step L to obtain the spatial position of the ore body and the grade change data of the ore body.
In the embodiment, beneficial mineralization zones are defined by screening the mineralogical conditions and extracting geophysical prospecting, chemical prospecting and remote sensing alteration information, geological data can be comprehensively collected, the mineralogical conditions can be comprehensively researched, and the mineral prospecting efficiency can be improved.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (1)
1. A quick prospecting method suitable for a shallow coverage area of a Gobi desert is characterized by comprising the following steps:
a: selecting an advantageous mineralization area, selecting an area containing an ore layer position, an external rock mass contact zone and a structural development part, and combining area geophysical prospecting, chemical prospecting and remote sensing alteration information to serve as a powerful mineralization area;
b: compiling a surface geological map, and developing a strong mineralization area selected in the step A by the following steps of 1: 1 ten thousand geological measurements are carried out, a structural lithology graph is filled, and a spectrum or chemical analysis sample is collected at a position which can be identified by naked eyes or has strong alteration;
c: compiling 1: 1 ten thousand high-precision magnetic survey deducing structure interpretation maps, designing a survey line for the powerful ore forming area selected in the step A through Beidou or GPS navigation software, laying the high-precision magnetic survey line perpendicular to the trend of the main ore forming zone, carrying out various kinds of measurement along the survey line, obtaining various kinds of measurement data, carrying out computer data processing, forming a high-precision magnetic survey delta T isoline plane map, a high-precision magnetic survey delta T polar isoline plane map and a high-precision polar delta T azimuth derivative map, deducing the approximate position and the occurrence of an ore control fracture according to the characteristics of a magnetic field and magnetic anomaly, and compiling a high-precision magnetic survey geological structure deducing interpretation map of an ore area;
d: compiling 1: 1 ten thousand soil measurement abnormal graphs and inferred structure interpretation graphs, and the same measurement line in the same range as the step C, developing 1: 1 ten thousand soil measurements, resulting in a 1: 1 ten thousand soil measurement single element abnormal graph, comprehensive abnormal graph and structure inference interpretation graph;
e: compiling 1: 1, taking a contour map of apparent polarizability, a contour map of apparent resistivity and an inferred structure interpretation map of the gradient measurement in the universal excitation, taking the same measuring line in the same range as the step C, and compiling 1: 1, measuring a visual polarizability contour map, a visual resistivity contour map and an inferred structure interpretation map by using a ladder in the universal excitation;
f: compiling 1: 1, measuring a uranium, thorium, potassium and main track isoline plan and deducing a structure interpretation chart by using a gamma energy spectrum in a ten thousand pits, and compiling 1: 1, measuring a visual polarizability contour map, a visual resistivity contour map and an inferred structure interpretation map by using a ladder in the universal excitation;
g: compiling a geological structure-lithology diagram of the bedrock in the mining area, comprehensively analyzing high-precision magnetic measurement, soil measurement, power-exciting elevator measurement and in-pit gamma energy spectrum measurement result graphs, determining a more accurate ore control fracture position by combining surface alteration information, compiling the geological structure-lithology diagram of the bedrock in the mining area and determining an optimal ore forming section;
h: tracing a surface mineralization alteration zone, mainly inspecting high-value points with the physicochemical detection abnormity high-value points as guidance, wherein Au is more than 10ppb, W is more than 30ppm, Sb is more than 240ppm and U is more than 10ppm, carefully performing mineralization observation within the range of the high-value points of 100m, collecting chemical analysis samples for mineralization clues, and analyzing the chemical analysis samples into mineral elements;
i: determining the position of the surface channel sounding engineering, and laying a surface channel sounding engineering control mineralization zone according to the optimal mineralization section determined in the step G and combining surface mineralization clues;
j: determining a theoretical coordinate value of the position of the drill hole, and determining the theoretical coordinate value of the position of the drill hole for the mineralization zone determined in the step I;
k: installing a core drilling machine, and determining the position of the drill hole by using a measuring instrument for positioning according to the theoretical coordinate value of the position of the drill hole determined in the step J to finish the installation of the core drilling machine;
l: acquiring a rock core in a full hole, using the rock core drilling machine in the step K, adopting a small-caliber rock core drilling machine to perform drilling construction, drilling through the ore control fracture and an ore body existing in the ore control fracture, acquiring the rock core in the full hole, and sealing the full hole after the hole is finished;
m: and D, performing core splitting sampling on the rock core obtained in the step L to obtain the spatial position of the ore body and the grade change data of the ore body.
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| CN112444423B (en) * | 2020-11-20 | 2022-12-20 | 核工业北京地质研究院 | Uranium polymetallic associated ore deposit core sampling method |
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