CN105785466A - Leakage mineralization uranium ore finding method - Google Patents
Leakage mineralization uranium ore finding method Download PDFInfo
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- CN105785466A CN105785466A CN201511020716.9A CN201511020716A CN105785466A CN 105785466 A CN105785466 A CN 105785466A CN 201511020716 A CN201511020716 A CN 201511020716A CN 105785466 A CN105785466 A CN 105785466A
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Abstract
The invention provides a leakage mineralization uranium ore finding method. The method comprises the following steps: delineating a water-power window with geological data acquired from drilling, enabling mutual communication of underground water among an upper water-bearing stratum and a lower water-bearing stratums or a plurality of water-bearing strata. The two water-bearing strata having water pressure difference therebetween, wherein one water-bearing stratum may stably provide uranium-contained underground water to another water-bearing stratum. If the delineated part has suitable geochemical barriers and hydrological geochemical barriers, and the underground water has plentiful uranium, an industrial uranium ore body is formed in the vicinity of the water-power window. According to the invention, the method determines whether a geologic body having water-power window can form an industrial uranium ore body, accurately finds the water-power window, substantially increases efficiency in finding uranium mine, and increases precision of positioning an ore body.
Description
Technical field
The present invention relates in in-situ leachable uranium deposit more stream and become Prospecting For Uranium pattern and the application in ore deposit, be specifically related to a kind of more stream and become the Prospecting For Uranium method in ore deposit.
Background technology
North in-situ leachable uranium deposit is the emphasis of China's Prospecting For Uranium work, this type of uranium ore is based on buried blind orebody, substantially without exposure of appearing, mainly look for ore deposit means and method for probing, main ore-controlling factors is stratiform geochemical barriers, therefore, finds out that favourable geochemical barriers is to look for ore deposit crucial, the cycle finding industry uranium ore body can be shortened, improve effect of ore-prospect.More stream becomes the metallogenic factors that ore deposit is important, special to combine, its prerequisite is for being there is hydrodynamic force window, Uranium-rich ore body is often formed at hydrodynamic force window place, but not all of hydrodynamic force window all can form industry uranium ore body, also need to special geochemical barriers and hydrogeochemistry barrier, be only possible to formation industry uranium ore body.
Summary of the invention
It is an object of the invention to provide a kind of more stream and become the Prospecting For Uranium method in ore deposit, can it form industry uranium ore body for the geologic body having hydrodynamic force window and differentiate.
Realize the technical scheme of the object of the invention: a kind of more stream becomes the Prospecting For Uranium method in ore deposit, its geologic information circle obtained with probing connects hydrodynamic force window, in the scope of delineation, between two-layer or multi-layered aquifer, subsoil water is interconnected up and down, two-layer subsoil water has differential water pressures, one of them water-bearing layer stably can provide the subsoil water rich in uranium to another water-bearing layer, if circled portion has suitable geochemical barriers and hydrogeochemistry barrier, subsoil water contains again abundant uranium, then can form industry uranium ore body near hydrodynamic force window；
Described suitable geochemical barriers is: two-layer or localized loss water barrier between adjacent aquifers more than two-layer, and in major part region, bilevel one is oxidation environment, and another layer is reducing environment；Having one near hydrodynamic force window by the geochemical environment aoxidized to reduction transition, the reduction side content of organic matter drops to negative value more than oxidized zone more than 3 times, △ Eh value partially, then be favourable ore-forming setting；
Described suitable hydrogeochemistry barrier is: adjacent water-bearing layer is rich in pressure-bearing property subsoil water, near hydrodynamic force window, there is more than the differential water pressures 10m of upper and lower two, and groundwater velocity has gradual change trend, the variable component Eh in water, Fe2+/Fe3+、H2S-phase difference is relatively big, then be favourable ore-forming setting；
Containing again abundant uranium in described subsoil water is: at suitable geochemical barriers and hydrogeochemistry barrier place, if wherein uranium content > 10 in one layer of subsoil water5G/l, another layer of < 105G/l, then this place inherently forms industry uranium ore body.
A kind of more stream becomes the Prospecting For Uranium method in ore deposit, variable component Eh, the Fe in its described water as above2+/Fe3+、H2S-phase difference is relatively big, for Eh value close to zero, Fe2+/Fe3+Close to 1, H2S is more than zero.
A kind of more stream becomes the Prospecting For Uranium method in ore deposit as above, if there is notable difference at hydrodynamic force window place in its upper and lower two-layer water-bearing layer, form the geochemical environment of reduction bottom, top oxidation, redox zone is dried mushroom shape or like dried mushroom shape, the content of organic matter differs greatly, then minerogentic condition is the most favourable.
A kind of more stream becomes the Prospecting For Uranium method in ore deposit as above, and it, at the industrial uranium ore body place of prediction, adopts less engineering spacing to verify uranium ore body presence or absence and uranium ore body form.
A kind of more stream becomes the Prospecting For Uranium method in ore deposit as above, its described hydrodynamic force window, the section that the thickness of water barrier in different directions section is at 0～0.5 meter is found out for disclosing engineering data first with deep, find out similar area in adjacent sections again, adjacent domain trap being got up on plane graph, the region of these closings had both been hydrodynamic force window.
Effect of the invention is that: the present invention provides a kind of more stream to become the Prospecting For Uranium method in ore deposit, can it form industry uranium ore body for the geologic body having hydrodynamic force window and differentiate, accurately have found hydrodynamic force window, be greatly enhanced Prospecting For Uranium work efficiency, improve orebody location precision.The present invention is widely used in looking in the process of ore deposit of Yi Li Uranium Ore Field, and the discovery of Meng Qiguer, flood trench and Wukurqi uranium deposit glass_rich cement body is served key directive function.
Accompanying drawing explanation
Fig. 1 is suitable geochemical barriers and hydrogeochemistry barrier schematic diagram；
In figure: 1. argillaceous rocks water barrier；2. sandstone aquifer；3. boring and numbering；4. oxidation environment.
Fig. 2 is southern margin of Yili Basin Meng Qiguer uranium deposit hydrodynamic force window ore_forming model figure (left side central portion bilateral ore body is hydrodynamic force window type uranium ore body).
Detailed description of the invention
The Prospecting For Uranium method in ore deposit is become to be further described a kind of more stream of the present invention below in conjunction with the drawings and specific embodiments.
As depicted in figs. 1 and 2, the application present invention is found that Jurassic system three work river group epimere (V respectively at southern margin of Yili Basin Meng Qiguer, flood trench uranium deposit2 1) and Xishanyao group epimere (VII2) hydrodynamic force window, provide hydrogeochemistry ball for U metallogeny, define and be rich in big industrial uranium ore body.
A kind of more stream of the present invention becomes the Prospecting For Uranium method in ore deposit, its geologic information circle obtained with probing connects hydrodynamic force window, in the scope of delineation, between two-layer or multi-layered aquifer, subsoil water is interconnected up and down, two-layer subsoil water has differential water pressures, one of them water-bearing layer stably can provide the subsoil water rich in uranium to another water-bearing layer, if circled portion has suitable geochemical barriers and hydrogeochemistry barrier, subsoil water contains again abundant uranium, then can form industry uranium ore body near hydrodynamic force window.
Described suitable geochemical barriers is: two-layer or localized loss water barrier between adjacent aquifers more than two-layer, and in major part region, bilevel one is oxidation environment, and another layer is reducing environment；One is had by the geochemical environment aoxidized to reduction transition near hydrodynamic force window, the reduction side content of organic matter substantially increases partially, △ Eh value is remarkably decreased (the reduction side content of organic matter drops to negative value more than oxidized zone more than 3 times, △ Eh value partially), then be favourable ore-forming setting；
Described suitable hydrogeochemistry barrier is: adjacent water-bearing layer is rich in pressure-bearing property subsoil water, near hydrodynamic force window, there is the differential water pressures of upper and lower two, and groundwater velocity has gradual change trend, the variable component pH in water, Eh, Fe2+/Fe3+、H2S-phase difference relatively big (Eh value close to zero, Fe2+/Fe3+Close to 1, H2S is more than zero), then it is favourable ore-forming setting；
Containing again abundant uranium in described subsoil water is: at suitable geochemical barriers and hydrogeochemistry barrier place, if wherein uranium content > 10 in one layer of subsoil water5G/l, another layer of < 105G/l, then this place inherently forms industry uranium ore body.
Disclosing engineering data first with deep and find out the section that the thickness of water barrier in different directions section is at 0～0.5 meter, then find out similar area in adjacent sections, adjacent domain trap got up on plane graph, the region of these closings had both been hydrodynamic force window.
Operation principle of the present invention: the Geochemical Characteristics of uranium is valence variation element, the state of oxidation easily migrates, reducing condition easily precipitates enrichment of ore-forming, utilize in-situ leachable uranium deposit to look for the Main Means in ore deposit to drill, the engineering data such as shallow well and footrill, find out hydrodynamic force window, if there are suitable geochemical barriers and hydrogeochemistry barrier in this position, subsoil water contains again abundant uranium, rich big uranium ore body will necessarily be formed.Otherwise become ore deposit unfavorable.
Become the identification of the favourable geochemical environment in ore deposit: the present invention utilizes existing geotechnical boring geologic information, the geochemical environment that section is dissected one by one divides band, if there is notable difference at hydrodynamic force window place in two-layer water-bearing layer up and down, form the geochemical environment of reduction bottom, top oxidation, redox zone is dried mushroom shape or like dried mushroom shape, the content of organic matter differs greatly, then minerogentic condition is the most favourable.
Becoming the favourable hydro-geochemical environment identification in ore deposit: first at advantageously Geochemistry near sites, the hydrogeological hole data of contrast upstream and downstream construction, if uranium content enriches and Eh, pH value, groundwater level, H in water2S、Fe2+/Fe3+Etc. there is larger difference, then to form the probability of rich gulf very big at this place.
More stream Cheng Kuang Favorable Areas borehole engineering verification, in the Favorable Areas of prediction, will adopt less engineering spacing to verify uranium ore body presence or absence, and uranium ore body form, reaches to control the purpose of uranium ore body.
Claims (5)
1. one kind more stream become the Prospecting For Uranium method in ore deposit, it is characterized in that: the geologic information circle obtained with probing connects hydrodynamic force window, in the scope of delineation, between two-layer or multi-layered aquifer, subsoil water is interconnected up and down, two-layer subsoil water has differential water pressures, one of them water-bearing layer stably can provide the subsoil water rich in uranium to another water-bearing layer, if circled portion has suitable geochemical barriers and hydrogeochemistry barrier, subsoil water contains again abundant uranium, then can form industry uranium ore body near hydrodynamic force window；
Described suitable geochemical barriers is: two-layer or localized loss water barrier between adjacent aquifers more than two-layer, and in major part region, bilevel one is oxidation environment, and another layer is reducing environment；Having one near hydrodynamic force window by the geochemical environment aoxidized to reduction transition, the reduction side content of organic matter drops to negative value more than oxidized zone more than 3 times, △ Eh value partially, then be favourable ore-forming setting；
Described suitable hydrogeochemistry barrier is: adjacent water-bearing layer is rich in pressure-bearing property subsoil water, near hydrodynamic force window, there is more than the differential water pressures 10m of upper and lower two, and groundwater velocity has gradual change trend, the variable component Eh in water, Fe2+/Fe3+、H2S-phase difference is relatively big, then be favourable ore-forming setting；
Containing again abundant uranium in described subsoil water is: at suitable geochemical barriers and hydrogeochemistry barrier place, if wherein uranium content > 10 in one layer of subsoil water5G/l, another layer of < 105G/l, then this place inherently forms industry uranium ore body.
2. a kind of more stream according to claim 1 becomes the Prospecting For Uranium method in ore deposit, it is characterised in that: the variable component Eh in described water, Fe2+/Fe3+、H2S-phase difference is relatively big, for Eh value close to zero, Fe2+/Fe3+Close to 1, H2S is more than zero.
3. a kind of more stream according to claim 1 becomes the Prospecting For Uranium method in ore deposit, it is characterized in that: if upper and lower two-layer water-bearing layer exists notable difference at hydrodynamic force window place, form the geochemical environment of reduction bottom, top oxidation, redox zone is dried mushroom shape or like dried mushroom shape, the content of organic matter differs greatly, then minerogentic condition is the most favourable.
4. a kind of more stream according to claim 1 becomes the Prospecting For Uranium method in ore deposit, it is characterised in that: at the industrial uranium ore body place of prediction, adopt less engineering spacing to verify uranium ore body presence or absence and uranium ore body form.
5. a kind of more stream according to claim 1 becomes the Prospecting For Uranium method in ore deposit, it is characterized in that: described hydrodynamic force window, the section that the thickness of water barrier in different directions section is at 0～0.5 meter is found out for disclosing engineering data first with deep, find out similar area in adjacent sections again, adjacent domain trap being got up on plane graph, the region of these closings had both been hydrodynamic force window.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112489160A (en) * | 2019-09-11 | 2021-03-12 | 核工业二一六大队 | Uranium ore pumping test duration curve drawing method |
| CN113534283A (en) * | 2021-06-10 | 2021-10-22 | 核工业北京地质研究院 | Quantitative evaluation method for ore formation element characteristics of sandstone-type uranium ore |
| CN117328860A (en) * | 2023-08-30 | 2024-01-02 | 核工业二0三研究所 | Positioning method for grey uranium-rich reduced geologic body in red clastic rock construction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112489160A (en) * | 2019-09-11 | 2021-03-12 | 核工业二一六大队 | Uranium ore pumping test duration curve drawing method |
| CN113534283A (en) * | 2021-06-10 | 2021-10-22 | 核工业北京地质研究院 | Quantitative evaluation method for ore formation element characteristics of sandstone-type uranium ore |
| CN113534283B (en) * | 2021-06-10 | 2024-03-19 | 核工业北京地质研究院 | Quantitative evaluation method for ore-forming element characteristics of sandstone-type uranium ores |
| CN117328860A (en) * | 2023-08-30 | 2024-01-02 | 核工业二0三研究所 | Positioning method for grey uranium-rich reduced geologic body in red clastic rock construction |
| CN117328860B (en) * | 2023-08-30 | 2024-04-16 | 核工业二0三研究所 | Positioning method for grey uranium-rich reduced geologic body in red clastic rock construction |
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