CN117993578A - Gold mine target area prediction method, gold mine target area prediction system, computer equipment and medium - Google Patents
Gold mine target area prediction method, gold mine target area prediction system, computer equipment and medium Download PDFInfo
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- 229910052737 gold Inorganic materials 0.000 title claims abstract description 80
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000011161 development Methods 0.000 claims abstract description 28
- 238000011002 quantification Methods 0.000 claims abstract description 5
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- 229910052500 inorganic mineral Inorganic materials 0.000 claims description 20
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- 230000001939 inductive effect Effects 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 description 23
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Abstract
The invention provides a gold mine target area prediction method, a gold mine target area prediction system, computer equipment and a medium, belonging to the technical field of gold mine exploration, comprising the following steps: obtaining geological maps, geochemical anomaly maps, geophysical anomaly maps and remote sensing image anomaly maps of different scales of a target area, and overlapping the maps to obtain an overlapped map; finding a region with a plurality of regional gold ore marks in the superposition diagram as an alternative gold ore target region; calculating the development conditions, geological conditions, current resource situations and scores of potential resources of the candidate gold mine target areas; the score is the ratio of its actual condition value to its ideal condition value; different score ratios are given to development conditions, geological conditions, current resource situations and potential resource of the target area of the alternative gold mine according to actual demands, and target area quantitative total scores of the target area of the alternative gold mine are calculated according to the different score ratios; the candidate Jin Zhaokuang target with the highest target quantification total score is selected as the gold mine target. The method can effectively screen out high-quality gold mine exploration areas.
Description
Technical Field
The invention belongs to the technical field of gold mine exploration, and particularly relates to a gold mine target area prediction method, a gold mine target area prediction system, a gold mine target area prediction device and a gold mine target area prediction medium.
Background
At present, investment of mining companies on gold mines or prospecting target areas is considered to reduce cost, save energy and increase efficiency, and Jin Zhaokuang target areas with high research degree, good mineral forming conditions, large resource potential and good development prospect are required to be rapidly and accurately screened from a large number of prospecting projects on brown or green lands so as to carry out subsequent investment and acquisition and purchase work.
The mining company needs a set of more scientific and efficient method for evaluating and screening the mining target areas, so that the target areas with the most investment value can be screened out of a plurality of mining target areas, and further work can be carried out in a targeted manner. The existing target area prediction methods are numerous, such as a construction superposition corona method, a 'minimum prediction area' method, a three-dimensional quantitative ore formation prediction method, a geological information extraction method and the like.
The existing target area prediction and evaluation method needs to develop a large amount of geophysical prospecting and chemical prospecting work in the ore weight range to find the ore area, and has the defects of higher cost and longer time.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention provides a gold mine target area prediction method.
In order to achieve the above object, the present invention provides the following technical solutions:
A gold mine target area prediction method, comprising:
obtaining geological maps, geochemical anomaly maps, geophysical anomaly maps and remote sensing image anomaly maps of different scales of a target area, and overlapping the maps to obtain an overlapped map;
Finding a region with a plurality of regional gold ore marks in the superposition diagram as an alternative gold ore target region;
calculating the development condition, geological condition, current resource situation and the value of the potential of the resource of each candidate gold mine target area; the score is the ratio of its actual condition value to its ideal condition value;
Different score ratios are given to development conditions, geological conditions, current resource situations and potential resource of the target area of the alternative gold mine according to actual demands, and target area quantitative total scores of the target area of the alternative gold mine are calculated according to the different score ratios; and taking the candidate Jin Zhaokuang target area with the highest total score of target area quantification as a gold mine target area.
Further, the regional gold mark comprises:
formation markers, magma-rock markers, structural markers, mineral symbiotic combination markers, alternate alteration markers, geochemical markers, geophysical markers, and remote sensing image markers.
Further, the contrast score of geochemical anomalies = the anomaly contrast/area known gold mine best anomaly contrast x contrast condition is full.
Further, the development conditions include: natural geographic conditions, traffic conditions, infrastructure conditions, mine construction conditions, ore right conditions, and local mining policy conditions;
the geological conditions and the current state of resources comprise: stratum conditions, magma rock conditions, construction conditions, alteration and zoning conditions, ore deposit scale conditions, ore deposit dressing and smelting conditions;
the resource potential conditions include: geochemical anomaly, geophysical anomaly, remote sensing image anomaly, mineralization verification features and ore body extension trend conditions.
Further, arcGIS, mapGIS, QGIS software is utilized to overlap geological maps, geochemical anomaly maps, geophysical anomaly maps and remote sensing image anomaly maps with the dimensions of 1:100 ten thousand, 1:50 ten thousand, 1:20 ten thousand, 1:5 ten thousand and 1:1 ten thousand to obtain overlapping maps.
Further, the selecting of the regional gold mark comprises the following steps:
Inducing the mineralization characteristics of known gold deposits within the region, including formation times, spatial distribution, mineral bearing formations, magma activity, structural deformation, and altered developmental characteristics;
And selecting regional gold ore marks according to the coupling relation between the ore forming characteristics and Jin Chengkuang events.
A gold target zone prediction system, comprising:
the information acquisition module is used for acquiring geological maps, geochemical anomaly maps, geophysical anomaly maps and remote sensing image anomaly maps with different scales, and overlapping the images to obtain an overlapped map;
the alternative region selection module is used for finding out a region where the regional gold prospecting marks are combined and developed in the superposition graph according to the gold prospecting marks as an alternative Jin Zhaokuang target region;
The scoring module is used for giving different score ratios to the development conditions, geological conditions and resource current situation of the candidate Jin Zhaokuang target areas according to the actual demands of mining companies, and calculating target area quantitative total scores of the candidate Jin Zhaokuang target areas according to the different score ratios;
and the gold mine target area selection module is used for selecting an alternative Jin Zhaokuang target area with the highest target area quantification total score as a gold mine target area.
The gold mine target area prediction method provided by the invention has the following beneficial effects:
The method comprises the steps of obtaining an existing geological map, a geochemical anomaly map, a geophysical anomaly map and a remote sensing image anomaly map of a target area, overlapping the geological map, the geochemical anomaly map, the geophysical anomaly map and the remote sensing image anomaly map to obtain an overlapped map, and finding out a region with a plurality of regional gold mine marks on the overlapped map as an alternative gold mine target region; calculating the development conditions, geological conditions, current resource situation and scores of potential resources of the candidate gold mine target area on the basis; and calculating target quantitative total scores of target areas of the candidate gold ores according to different score proportions to obtain the target areas of the gold ores.
The method uses the existing geological map, geochemical anomaly map, geophysical anomaly map and remote sensing image anomaly map to perform preliminary screening on the gold mine area, and performs final screening on the target area according to each factor, so that a company is not required to perform a large amount of geophysical prospecting and chemical prospecting work to find the mine area, and the cost is low and the time is short.
Drawings
In order to more clearly illustrate the embodiments of the present invention and the design thereof, the drawings required for the embodiments will be briefly described below. The drawings in the following description are only some of the embodiments of the present invention and other drawings may be made by those skilled in the art without the exercise of inventive faculty.
FIG. 1 is a schematic diagram of a method for predicting a target zone of a gold mine according to the present invention.
Detailed Description
The present invention will be described in detail below with reference to the drawings and the embodiments, so that those skilled in the art can better understand the technical scheme of the present invention and can implement the same. The following examples are only for more clearly illustrating the technical aspects of the present invention, and are not intended to limit the scope of the present invention.
Examples
The invention provides a gold mine target area prediction method, which is specifically shown in fig. 1 and comprises the following steps:
step 1: the geological mineral data and literature of the area are comprehensively collected,
Summarizing the formation times, spatial distribution, ore-containing stratum, magma activities, structural deformation and alteration development characteristics of known gold ore deposits in the region, analyzing the coupling relation between the factors and Jin Chengkuang events, and summarizing the key control factors of gold ore formation characteristic of the region.
Step 2: the key control factors obtained in the step 1 are summarized into regional gold mining marks, including stratum marks, magma marks, construction marks, mineral symbiotic combination marks, interchange alteration marks, geochemical marks, geophysical marks, remote sensing image marks and the like. The presence of these zone gold prospecting marks facilitates delineation of the Jin Zhaokuang target area.
Step 3: by integrating regional geological mineral data, carrying out earth-object-chemical-remote information integrated analysis, overlapping geological maps, geochemical anomaly maps, geophysical anomaly maps and remote sensing image anomaly maps with different scales of 1:100 ten thousand, 1:50 ten thousand, 1:20 ten thousand, 1:5 ten thousand and even 1:1 ten thousand by utilizing ArcGIS, mapGIS, QGIS and other software, and carrying out standard and other reprocessing on the existing geochemistry, geophysical and remote sensing data according to actual requirements;
On the basis, the gold-finding target area is provided in the region where the gold-finding marks of the circled area develop in a combined way, particularly in the region where the superposition degree of a plurality of the gold-finding marks is high. (regions where the collected patterns are superimposed and the combined development of the gold-finding marks is carried out after the superposition)
Step 4: based on the step 3, the conditions of each Jin Zhaokuang target area are comprehensively known and ascertained through data and information collection and combination of necessary field investigation.
Summarized are 3 aspects of development conditions, geological conditions and resource status and resource potential.
The development conditions include: natural geographic conditions, traffic conditions, infrastructure conditions, mine construction conditions, ore right conditions, local mining policy conditions;
the geological conditions and the current state of resources comprise: stratum conditions, magma rock conditions, construction conditions, alteration and zoning conditions, ore deposit scale conditions, ore deposit dressing and smelting conditions;
the resource potential conditions include: geochemical anomaly, geophysical anomaly, remote sensing image anomaly, mineralization verification features and ore body extension trend conditions. And comprehensively mastering all information required to be known for target area investment.
And 5, sorting all the conditions counted in the step 4, giving different score ratios to different conditions according to actual demands of mining companies, and establishing a target area quantitative scoring system in a percentage form, wherein the score of a certain condition is determined by the ratio of actual conditions to optimal conditions, such as the contrast score of geochemistry abnormality = the optimal abnormal contrast of gold mine per area x the full score of the contrast condition. And obtaining target area quantitative total score after accumulating the scores of all conditions, and then screening high-quality target areas from a plurality of gold-finding target areas according to the ranking condition of the total score and submitting the high-quality target areas to mining companies.
The following are specific embodiments of the present invention:
the method is used for regional prospecting prediction projects of A mining companies.
The gold ore formation type and the ore formation geological characteristics of the region are summarized through the rule of the research region Jin Chengkuang, and key control factors for ore formation are summarized as initial enrichment of crust, structural deformation activation and magma hot liquid superposition, so that regional ore finding mark combination is provided as carbonaceous fine dust rock, brittle toughness deformation zone and sea western end rock mass. Then, a plurality of gold mining target areas are provided in the key areas of combined development of the mining marks of the areas by integrating mass geological mineral data in the areas, and integrated mining, nesting and secondary development of ground-object-chemical-remote multi-information are further developed. On the basis, the scoring standard is established by combining natural geography, traffic conditions, infrastructure and mine construction conditions, ore right conditions, development policies, regional and ore deposit geological conditions, resource current situation, dressing and smelting conditions, comprehensively considering the resource potential of mining projects from the aspects of ground-object-chemical-remote and the like, summarizing the conditions of the development conditions, geological conditions, resource current situation and resource potential 3 aspects, and establishing the scoring standard as follows:
1. Development conditions (30 minutes)
Including natural geography and traffic conditions, infrastructure, mine construction conditions, ore right conditions, development policies, and the like.
(1) Natural geography and traffic conditions (full 10 points): scoring is carried out according to the influence of geographical climate, altitude, terrain and other conditions on exploitation and the traffic condition of a target area.
(2) Infrastructure and mine construction conditions (10 points in full): and comprehensively scoring according to water, electricity, material supply and infrastructure conditions in the target area and combining the conditions of mine construction.
(3) Ore right case and development policy (full 10): and analyzing the investment environment and the feasibility of project achievement according to the current ore right progress and the conditions of the company with the ore right in combination with the local policy conditions, and comprehensively scoring.
2. Geological conditions and current resource status (full 45)
Scoring is mainly referred to the following aspects:
(1) Stratum (full 8 points): scoring is based on exposure and distribution of favorable mineral formations, particularly carbonaceous finely divided rock.
① The carbonaceous fine-grained rock is the ore-containing stratum of the known ore deposit, is subjected to regional shallow deterioration, and is exposed in a large area in the range of a target area for 6-8 minutes;
② Carbonaceous finely divided rock is not a mineral bearing formation of known deposits, but is exposed in the target area; the mineral bearing strata of the deposit are known to be exposed within the target zone; the target area is exposed with obvious ore-forming favorable stratum, and the ore-forming favorable stratum is counted for 3-5 minutes according to the exposure, layer thickness and distance conditions and the relation with ore formation;
③ The mining area does not expose the fine clastic rock containing carbon, but is distributed on the area; the mineral bearing strata of a deposit are known to be exposed in the target area, and are rated for 0-2 minutes, depending on their exposure, layer thickness and distance conditions and their relation to the formation of minerals.
(2) Magma rock (8 minutes full): scoring is performed according to characteristics and distribution of favorable ore-forming magma rocks (especially granite in the western stage).
① The target area and the adjacent area thereof develop in the sea and western end stage granite invasive body, are closely related to the ore formation, and are used as ore holding rock for counting 6-8 minutes;
② The target area and the adjacent area thereof have certain development of the granite invasive body at the end of the sea and the west, have certain relation with the ore formation, but are not used as ore holding rock, and count for 3-5 minutes;
③ The target area and the adjacent areas have less magma activity development, but the ore-forming effect of the target area and the adjacent areas are unknown with the known ore deposit, and the ore-forming effect is counted for 0-2 minutes.
(3) Structure (full 8 points): and comprehensively scoring according to the development and distribution of the deformation zone of the brittle-tough structure and the influence of the combined structure on the formation and damage of the ore deposit.
① The brittle and tough structure in the mining area has stronger deformation development and larger range, and is used as the mine control structure of the known ore body for counting 6-8 minutes;
② The brittle and tough structure in the mining area deforms and develops normally, but has the characteristic of a certain mine control structure, and the score is 3-5;
③ The deformation of the brittle and tough structure in the mining area or region is less developed and is not clear in relation to the mineralization, and the mining area or region accounts for 0-2 minutes.
(4) Alteration and banding (full 7 min): scoring was performed according to the intensity, scale, and banding characteristics of the alteration associated with the ore formation.
① The changes of yellow iron mineralization, potassium long petrifaction, green mud petrifaction, sericite, brown iron mineralization, jarosite and the like are more, the development is strong, and the obvious banding situation exists, and the scale is 6-7 minutes;
② The alteration type is general, the scale intensity is general, the banding characteristic is not obvious, and the scale is 3-5 minutes;
③ The alteration type is single, the scale strength is poor, the obvious zoning characteristic is not possessed, and the scale is 0-2 minutes.
(5) Deposit size (10 minutes full):
Large-ultra large (8-10 min), medium (6-7 min), small (3-5 min), and mine (1-2 min);
(6) Dressing and smelting conditions (full division 4): scoring is carried out according to the type of the ore and the difficulty degree of dressing and smelting, and the construction conditions of ore deposit exploitation.
① Taking high-grade ore as a main material, and selecting 3-4 minutes under good conditions;
② The ore grade is lower, the picking condition is general or worse, and the ore grade is 1-2 minutes.
3. Potential resource (full 25)
(1) Ground-substance-chemical-remote comprehensive abnormal condition (18 minutes full)
A. Geochemical anomaly characteristics (full 7 points): the abnormal chemical detection has good indication on gold mineralization, and a series of gold deposits in the region are mostly discovered by working on the basis of the abnormal chemical detection. It has been found that deposits generally have a stronger Au element anomaly and have a certain anomaly element combination. The scoring mainly refers to a sampling method and a scale, and Au element abnormal strength, scale and abnormal element combination, and comprises indexes such as an abnormal average value, an abnormal contrast, an abnormal extremely high value, the comparability of abnormal element combination characteristics and known ore deposits and the like.
① The large scale (1:1 ten thousand or more) is abnormal mainly of Au, the intensity is high (the Au content is more than 30 multiplied by 10 < -9 > or the lining degree is more than or equal to 3), the scale is large (more than 0.4 km2), the multi-element abnormal sleeve is good and basically consistent with the known ore deposit, and the number of the multi-element abnormal sleeve is 6 to 7 minutes;
② The medium scale (1:5 ten thousand or more) is mainly Au-based abnormality, has higher strength (the Au content is 15-30 multiplied by 10-9 or the lining degree is more than or equal to 2), has larger scale (0.3-0.4 km2), has certain multielement abnormality nesting and has comparability with the known deposit, and counts 3-5 minutes;
③ Small scale (1:20 ten thousand or more) is abnormal mainly of Au, the intensity is general (Au content is 5-15 multiplied by 10 < -9 > or contrast is more than or equal to 1.5), the scale is general (0.1-0.3 km2), the element combination is single, the nesting is general, and the score is 0-2.
B. Geophysical anomaly characteristics (full 7 points): the electrical method of geophysical prospecting has better indication significance for gold prospecting, and the known ore body has low resistance and high polarization characteristics due to abnormal excitation. Scoring is mainly based on indexes such as geophysical prospecting method, scale, abnormal strength, scale, possibility of mineral abnormality and the like.
① Large scale (1:1 ten thousand or more) electrical method, magnetic method, etc., high strength, large scale, high possibility of mineral anomaly, such as low resistivity-high polarization anomaly of electrical method; strong-weak magnetic contact band and magnetic difference by magnetic method
Constant gradient bands, etc.; a medium-high density body of gravity, etc., and counting for 6-7 minutes;
② Single anomalies such as an electric method or a magnetic method with a medium scale (1:5 ten thousand or more) have higher intensity, larger scale and higher possibility of mineral anomalies, and count for 3-5 minutes;
③ The single anomalies of the electric method, the magnetic method, the gravity and the like with a small scale (1:20 ten thousand or more) are generally not concentrated enough in strength, and the possibility of mineral anomalies is generally counted to be 0-2 minutes.
C. Remote sensing anomalies (full score 4): the distribution of the alteration band can be well indicated by the abnormality such as iron staining, hydroxyl and the like of the remote sensing image, and the remote sensing image is indirectly guided Jin Zhaokuang. Scoring mainly refers to indexes such as a scale, abnormal strength, scale and the like of the remote sensing image.
① The iron staining and the hydroxyl abnormality of the target area and the vicinity with large scale are strong and large in scale, and the characteristics of the target area and the vicinity are consistent with those of the known ore deposit, so that the possibility of mineral abnormality is high, and the probability is 3-4 minutes;
② The target area or region has iron staining with a medium scale and abnormal hydroxyl, has a certain scale, is similar to the characteristics of the known ore deposit, and can be abnormal due to ore, and the scale is 2-3 minutes;
③ The target area or region has small scale iron staining and abnormal hydroxyl group, and the abnormal iron staining and hydroxyl group has multiple resolvability and accounts for 0-2 minutes similar to the characteristics of the known ore deposit.
(2) Mineralization check and ore body extension trend (full 7)
The mineral lead tracing, abnormal checking, surveying and engineering disclosure can further determine the direction of prospecting, and verify the reliability of prospecting potential. Scoring mainly refers to checking means, and checks indexes such as the mineralization grade and scale, the extending trend of ore bodies and the like.
Through drilling and tank sounding verification, the industrial ore body is found to be large in scale and stable in extension, and the scale is counted for 6-7 minutes;
The mineralized body is found through the groove detection or the stepping investigation, has large scale and stable extension, and counts 3-5 minutes;
③ Through the stepping, the mineralization alteration zone is found to be larger in scale and obvious in extending trend, and 0-2 minutes are counted.
If a certain work of going through the ground, objects, chemical and remote is not carried out in the mining project or target area, the indicated prospecting potential can be assigned according to a certain abnormal strength and scale according to the actual situation.
The above embodiments are merely preferred embodiments of the present invention, the protection scope of the present invention is not limited thereto, and any simple changes or equivalent substitutions of technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present invention disclosed in the present invention belong to the protection scope of the present invention.
Claims (9)
1. A method for predicting a target zone of a gold mine, comprising:
obtaining geological maps, geochemical anomaly maps, geophysical anomaly maps and remote sensing image anomaly maps of different scales of a target area, and overlapping the maps to obtain an overlapped map;
Finding a region with a plurality of regional gold ore marks in the superposition diagram as an alternative gold ore target region;
calculating the development condition, geological condition, current resource situation and the value of the potential of the resource of each candidate gold mine target area; the score is the ratio of its actual condition value to its ideal condition value;
Different score ratios are given to development conditions, geological conditions, current resource situations and potential resource of the target area of the alternative gold mine according to actual demands, and target area quantitative total scores of the target area of the alternative gold mine are calculated according to the different score ratios; and taking the candidate Jin Zhaokuang target area with the highest total score of target area quantification as a gold mine target area.
2. The method of claim 1, wherein the regional gold mark comprises:
formation markers, magma-rock markers, structural markers, mineral symbiotic combination markers, alternate alteration markers, geochemical markers, geophysical markers, and remote sensing image markers.
3. A method of predicting a target area of gold as claimed in claim 1, wherein the score of the contrast of the geochemical anomaly = the optimal contrast of the gold known to the region x the contrast condition is full.
4. The gold target zone prediction method according to claim 1, wherein the development conditions include: natural geographic conditions, traffic conditions, infrastructure conditions, mine construction conditions, ore right conditions, and local mining policy conditions;
the geological conditions and the current state of resources comprise: stratum conditions, magma rock conditions, construction conditions, alteration and zoning conditions, ore deposit scale conditions, ore deposit dressing and smelting conditions;
the resource potential conditions include: geochemical anomaly, geophysical anomaly, remote sensing image anomaly, mineralization verification features and ore body extension trend conditions.
5. The gold target area prediction method according to claim 1, wherein ArcGIS, mapGIS, QGIS software is used for overlapping geological maps, geochemical anomaly maps, geophysical anomaly maps and remote sensing image anomaly maps with dimensions of 1:100 ten thousand, 1:50 ten thousand, 1:20 ten thousand, 1:5 ten thousand and 1:1 ten thousand to obtain an overlapped map.
6. The method for predicting a gold target area according to claim 1, wherein the selecting of the regional gold mark comprises:
Inducing the mineralization characteristics of known gold deposits within the region, including formation times, spatial distribution, mineral bearing formations, magma activity, structural deformation, and altered developmental characteristics;
And selecting regional gold ore marks according to the coupling relation between the ore forming characteristics and Jin Chengkuang events.
7. A gold target zone prediction system, comprising:
the information acquisition module is used for acquiring geological maps, geochemical anomaly maps, geophysical anomaly maps and remote sensing image anomaly maps with different scales, and overlapping the images to obtain an overlapped map;
the alternative region selection module is used for finding out a region where the regional gold prospecting marks are combined and developed in the superposition graph according to the gold prospecting marks as an alternative Jin Zhaokuang target region;
The scoring module is used for giving different score ratios to the development conditions, geological conditions and resource current situation of the candidate Jin Zhaokuang target areas according to the actual demands of mining companies, and calculating target area quantitative total scores of the candidate Jin Zhaokuang target areas according to the different score ratios;
and the gold mine target area selection module is used for selecting an alternative Jin Zhaokuang target area with the highest target area quantification total score as a gold mine target area.
8. A computer device, comprising:
at least one processor; and a memory communicatively coupled to the at least one processor; wherein,
The memory stores instructions executable by the at least one processor to enable the at least one processor to perform the gold target zone prediction method of any one of claims 1 to 6.
9. A non-transitory computer-readable storage medium storing computer instructions for causing the computer to perform the gold target zone prediction method of any one of claims 1 to 6.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108573206A (en) * | 2017-10-11 | 2018-09-25 | 成都理工大学 | Metallogenic prognosis method based on analytic hierarchy process (AHP) |
| CN116359998A (en) * | 2023-02-28 | 2023-06-30 | 青海省柴达木综合地质矿产勘查院(青海省盐湖地质调查院) | Ore finding method for controlling gold ore in breaking structure of high-cold frozen soil coverage area |
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| CN108573206A (en) * | 2017-10-11 | 2018-09-25 | 成都理工大学 | Metallogenic prognosis method based on analytic hierarchy process (AHP) |
| CN116359998A (en) * | 2023-02-28 | 2023-06-30 | 青海省柴达木综合地质矿产勘查院(青海省盐湖地质调查院) | Ore finding method for controlling gold ore in breaking structure of high-cold frozen soil coverage area |
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