CN111159323A - Method for identifying sandstone-type uranium ore path-filling and discharging system based on multi-source geoscience information - Google Patents
Method for identifying sandstone-type uranium ore path-filling and discharging system based on multi-source geoscience information Download PDFInfo
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- 229910052770 Uranium Inorganic materials 0.000 title claims abstract description 39
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000007599 discharging Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000011435 rock Substances 0.000 claims abstract description 26
- 206010049244 Ankyloglossia congenital Diseases 0.000 claims abstract description 15
- 230000001502 supplementing effect Effects 0.000 claims abstract description 10
- 230000029142 excretion Effects 0.000 claims abstract description 6
- 238000012937 correction Methods 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000007781 pre-processing Methods 0.000 claims description 3
- 230000005855 radiation Effects 0.000 claims description 2
- 239000000126 substance Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 210000001061 forehead Anatomy 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000005442 atmospheric precipitation Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000003628 erosive effect Effects 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000010438 granite Substances 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
The invention belongs to the technical field of remote sensing geology, and particularly relates to a method for identifying a sandstone-type uranium deposit radius-supplementing drainage system based on multi-source geological information. The invention comprises the following steps: step 1, obtaining an original remote sensing image of a working area, and importing the processed remote sensing image into an ArcGIS platform; step 2, carrying out remote sensing interpretation of the structure, the vegetation zone and the water frenulum by using the remote sensing image imported in the step 1; step 3, comprehensively analyzing the interpretation results of the structure, the vegetation zone and the water frenulum, and identifying the excretion zone; step 4, identifying the rock pulp rock developing in the region by using the remote sensing image imported in the step 1, and using the rock pulp rock as an alternative replenishment region; step 5, finally confirming the distribution range of the supply area; step 6, confirming the power condition and the main flow direction of the ancient water flow by combining the ancient hydrogeological data, and determining the distribution range of the radial flow area; and 7, comprehensively analyzing, and finally confirming the regional diameter supplementing and arranging system. The method can accurately identify the path supplementing and discharging system related to the sandstone-type uranium ore.
Description
Technical Field
The invention belongs to the technical field of remote sensing geology, and particularly relates to a method for identifying a sandstone-type uranium deposit radius-supplementing drainage system based on multi-source geological information.
Background
Uranium is an important national defense strategic substance and an important energy substance, and is an important factor influencing and restricting the development of the nuclear industry. In recent years, sandstone-type uranium ores have become hot spots for geological exploration and research of current uranium ores due to the advantages of the sandstone-type uranium ores and the characteristics of small environmental pollution in mining and smelting and the like. Sandstone-type uranium ores are products of long geological evolution, and the formation of the sandstone-type uranium ores is controlled by various geological conditions, mainly including factors such as structure, uranium sources, underground water conditions, lithology of ore-bearing host rocks and the like. Sandstone-type uranium deposits are associated with oxidation in origin and are controlled by the oxidation zone. In the groundwater supply area, in the leaching water infiltration process, uranium in bedrock and loose sediments is continuously leached out to form uranium-containing water in an oxidation state, wherein the uranium mainly migrates in the form of various complexes. In the forward infiltration process, oxidation-reduction action is continuously carried out with reducing substances, a saturated state is reached in a proper place, and uranium is enriched into ore.
The sandstone-type uranium deposit is generally formed in a zone with a complete radius supplement and drainage system, and is mainly produced in a radius flow zone or a drainage zone in space. The underground water is supplied with the oxygen-enriched uranium-containing water in the erosion source area, uranium elements in the surrounding rock are continuously dissolved in the process of permeation in the radial flow area, and meanwhile dissolved oxygen is gradually consumed by the reducing substances until the dissolved oxygen is completely consumed, and the uranium elements are adsorbed, reduced and enriched into ores by the reducing substances.
For a complete artesian basin, groundwater at the periphery of the basin and in the uplift region is runoff-drained to form a complete radius-supplementing drainage system, which is an important condition for formation of sandstone-type uranium ores. The underground water of the basin is supplied with atmospheric precipitation at the position with the skylight and is also supplied with bedrock fracture water of the peripheral uplift area. The atmospheric precipitation leaches uranium elements in granite in the erosion source area, uranium-rich oxygen-containing water can be formed, and runoff is performed from the basin edge to the basin. Supplying the bedrock fracture water laterally, and runoff from the depression edge to the middle part. The runoff zone is mainly located in the sloping zone within the depression. The drainage zone is mainly located in a low-lying area of the pot, and is represented by a vegetation zone, a fractured structure, a water system, or the like. Therefore, once the spatial distribution of the path-supplementing discharge system of the research area can be accurately determined, the ancient hydrogeological environment of the research area can be mastered macroscopically, and the general direction is indicated for the exploration of sandstone banded uranium mines.
At present, the identification of the radius supplementing row system is mostly single, and only one aspect of the radius supplementing row system is started. Such as: the traditional remote sensing method can identify the excretion area by extracting the humidity index and the vegetation index; the hydrogeological method can roughly judge hydrodynamic environment and water flow direction and identify the range of a runoff area, and the geological method mainly focuses on identifying a corrosion source area and a supply area in the area.
Disclosure of Invention
The invention solves the problems that:
the invention provides a method for identifying a sandstone-type uranium ore radius supplementing and discharging system based on multi-source geological information.
The technical scheme adopted by the invention is as follows:
a method for identifying a sandstone-type uranium ore path-filling and discharging system based on multi-source geoscience information comprises the following steps:
step 1, obtaining an original remote sensing image of a working area, and importing the processed remote sensing image into an ArcGIS platform; step 2, carrying out remote sensing interpretation of the structure, the vegetation zone and the water frenulum on the ArcGIS platform by using the remote sensing image imported in the step 1; step 3, comprehensively analyzing the interpretation results of the structure, the vegetation zone and the water frenulum, and identifying the excretion zone; step 4, identifying the rock pulp rock developing in the region by using the remote sensing image imported in the step 1, and using the rock pulp rock as an alternative replenishment region; step 5, importing the regional geological map into ArcGIS software, and finally confirming the distribution range of the supply region; step 6, confirming the power condition and the main flow direction of the ancient water flow by combining the ancient hydrogeological data, and determining the distribution range of the radial flow area; and 7, comprehensively analyzing, and finally confirming the regional diameter supplementing and arranging system.
The step 1 comprises the steps of,
step 1.1, preprocessing an original remote sensing image through ENVI software, and deriving a true color synthetic remote sensing image;
and step 1.2, importing the true color synthetic remote sensing image into ArcGIS software to establish an accurate projection coordinate system.
In step 1.1, the preprocessing includes geometric correction and radiation correction.
The step 2 comprises the following steps of carrying out structure remote sensing interpretation in ArcGIS software to obtain structure information; carrying out vegetation zone remote sensing interpretation in ArcGIS software to obtain vegetation zone distribution information; and (4) performing water frenulum remote sensing interpretation in ArcGIS software to obtain water frenulum distribution information.
And in the step 3, according to the results of the remote sensing interpretation structure, the vegetation zone and the water frenulum in the step 2, the intersection part of the three or the intersection part of any two elements is selected as a local drainage zone.
The step 4 comprises the following steps:
step 4.1, establishing a magma rock interpretation mark through the remote sensing image imported in the step 1;
and 4.2, carrying out remote sensing interpretation of the magma in ArcGIS software.
The step 5 comprises the following steps:
step 5.1, importing the regional geological map into ArcGIS software, and establishing a projection coordinate system which is the same as the remote sensing image imported in the step 1;
step 5.2, calibrating the imported geological map through the geographic registration function in the ArcGIS software to enable the geological map to have accurate geographic position information;
and 5.3, integrating the remote sensing interpretation result of the rock pulp and the rock pulp distribution condition in the geological map in ArcGIS software, and selecting the acid rock pulp as a supply area.
In the step 7, according to the ancient hydrogeological conditions analyzed in the step 6, if the runoff of the water flow direction from the replenishing area confirmed in the step 5 to the drainage zone confirmed in the step 3 is met, a complete radial compensation drainage system is formed; if not, the diameter compensating row system does not exist.
The invention has the beneficial effects that:
the method for identifying the sandstone-type uranium deposit radius compensation and drainage system based on the multi-source geoscience information provided by the invention has the advantages that the radius compensation and drainage system is used as a complete system for analysis, comprehensive analysis and comparison of the remote sensing interpretation radius compensation and drainage system and geological, hydrogeological and other information are carried out by utilizing an ArcGIS platform, mutual verification is carried out by utilizing the multi-source geoscience information, and compared with the traditional radius compensation and drainage identification method, the method is simpler in operation and more accurate in identification result.
Drawings
Fig. 1 is a flowchart of a method for identifying a sandstone-type uranium ore path-filling and discharging system based on multi-source geoscience information, provided by the invention;
FIG. 2 is a remote sensing interpretation of the Gentle region of the forehead, Tenglanzhen.
Detailed Description
The method for identifying the sandstone-type uranium ore radius and discharge supplementing system based on multi-source geoscience information provided by the invention is further described in detail with reference to the accompanying drawings and the embodiment.
Taking a two-link basin forehead-core-and-glaze-type recess as an example, as shown in fig. 1, the method for identifying the sandstone-type uranium ore diameter-filling and discharging system based on multi-source geoscience information, provided by the invention, comprises the following steps:
step 1, obtaining a remote sensing image of a working area, which is an ETM image of a working area range in the embodiment. The step comprises the following substeps:
step 1.1, processing the ETM image by utilizing ENVI software, and then outputting a true color synthetic image, wherein an output file is named as RS.
And step 1.2, importing the RS.GIF file into ArcGIS software to establish an accurate projection coordinate system.
Step 2, carrying out remote sensing interpretation of the structure, the vegetation zone and the water frenulum on an ArcGIS platform, wherein the step comprises the following substeps:
and 2.1, newly creating a shp line file in ArcGIS software, namely RS structure.
And 2.2, newly creating a shp line file named as RS vegetation.
And 2.3, creating a shp line file named as RS hydrological image in ArcGIS software, performing remote sensing interpretation of the water system band, and obtaining water system band distribution information of the Fangwen region.
And 3, comprehensively analyzing the remote sensing interpretation results of the structure, the vegetation zone and the water frenulum, and identifying the excretion zone.
According to the results of the remote sensing interpretation structure, the vegetation zone and the water frenulum in the region of the forehead, the Carlo region, the intersection part of the three or the intersection part of any two elements is selected as a local drainage zone. This time, the intersection of the northeast orientation of the forehead, dong, vegetation zone, water lace, etc. was selected as the drainage zone.
And 4, identifying the rock pulp rock developing in the region by using the remote sensing image imported in the step 1 as an alternative supply region, wherein the step comprises the following substeps:
and 4.1, establishing a magma rock interpretation mark through the RS.GIF remote sensing image imported in the step 1.
And 4.2, creating a shp face file in ArcGIS software, namely RS magmatite.
Step 5, importing the geological map of the working area into ArcGIS software, and finally confirming the distribution range of the supply area, wherein the step comprises the following substeps:
and 5.1, importing the geological map of the region of the forehead, the knewen, into ArcGIS software, and establishing a projection coordinate system which is the same as the RS.
And 5.2, calibrating the imported geological map through the geographic registration function in the ArcGIS software to enable the geological map to have accurate spatial position information.
And 5.3, creating a shp face file named as RS recharge in ArcGIS software, and integrating the remote sensing interpretation result of the rock pulp and the rock pulp distribution situation in the geological map of the Fangronglar region, preferably taking an acid rock pulp distribution area as a supply area, and storing the result in the RS recharge.
And 6, confirming the power condition and the main flow direction of the ancient water flow by combining the ancient hydrogeological data, and determining the distribution range of the radial flow area.
And 7, comprehensively analyzing, and finally confirming the working area path supplementing and arranging system.
According to the ancient hydrogeological conditions in the step 6, if the ancient water flow direction meets the drainage zone confirmed in the step 3 from the runoff of the replenishment area confirmed in the step 5, a complete runoff replenishment drainage system is formed; if not, the diameter compensating row system does not exist.
Claims (8)
1. A method for identifying a sandstone-type uranium ore path-filling and discharging system based on multi-source geoscience information is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps of (1) obtaining an original remote sensing image of a working area, and importing the processed remote sensing image into an ArcGIS platform; step (2), carrying out remote sensing interpretation of structures, vegetation zones and water frenulum on the ArcGIS platform by using the remote sensing image imported in the step (1); step (3), comprehensively analyzing the interpretation results of the structure, the vegetation zone and the water frenulum, and identifying the excretion zone; step (4), identifying the rock pulp rock developing in the region as an alternative replenishment region by using the remote sensing image imported in the step (1); step (5), importing the regional geological map into ArcGIS software, and finally confirming the distribution range of the supply region; step (6), confirming the power condition and the main flow direction of the ancient water flow by combining the ancient hydrogeological data, and determining the distribution range of the radial flow area; and (7) comprehensively analyzing, and finally confirming the regional diameter supplementing and arranging system.
2. The method for identifying the sandstone-type uranium deposit radius-supplementing and discharging system based on the multi-source geoscience information according to claim 1, wherein the method comprises the following steps: the step (1) comprises the steps of,
step (1.1), preprocessing an original remote sensing image through ENVI software, and deriving a true color synthetic remote sensing image;
and (1.2) importing the true color synthetic remote sensing image into ArcGIS software to establish an accurate projection coordinate system.
3. The method for identifying the sandstone-type uranium deposit radius-supplementing and discharging system based on the multi-source geoscience information according to claim 2, wherein the method comprises the following steps: in the step (1.1), the pretreatment comprises geometric correction and radiation correction.
4. The method for identifying the sandstone-type uranium deposit radius-supplementing and discharging system based on the multi-source geoscience information according to claim 2, wherein the method comprises the following steps: the step (2) comprises the following steps of performing structure remote sensing interpretation in ArcGIS software to obtain structure information; carrying out vegetation zone remote sensing interpretation in ArcGIS software to obtain vegetation zone distribution information; and (4) performing water frenulum remote sensing interpretation in ArcGIS software to obtain water frenulum distribution information.
5. The method for identifying the sandstone-type uranium deposit radius-supplementing and discharging system based on the multi-source geoscience information according to claim 4, wherein the method comprises the following steps: in the step (3), according to the results of the remote sensing interpretation structure, the vegetation zone and the water frenulum in the step (2), the intersection part of the three or the intersection part of some two elements is selected as the local excretion zone.
6. The method for identifying the sandstone-type uranium deposit radius-supplementing and discharging system based on the multi-source geoscience information according to claim 5, wherein the method comprises the following steps: the step (4) comprises the following steps:
step (4.1), establishing a magma rock interpretation mark through the remote sensing image imported in the step (1);
and (4.2) carrying out remote sensing interpretation on the magma in ArcGIS software.
7. The method for identifying the sandstone-type uranium deposit radius-supplementing and discharging system based on the multi-source geoscience information according to claim 6, wherein the method comprises the following steps: the step (5) comprises the following steps:
step (5.1), importing the regional geological map into ArcGIS software, and establishing a projection coordinate system which is the same as the remote sensing image imported in the step (1);
step (5.2), calibrating the imported geological map through the geographic registration function in the ArcGIS software to enable the geological map to have accurate geographic position information;
and (5.3) integrating the remote sensing interpretation result of the rock pulp and the rock pulp distribution condition in the geological map in ArcGIS software, and selecting the acid rock pulp as a supply area.
8. The method for identifying the sandstone-type uranium deposit radius-supplementing and discharging system based on the multi-source geoscience information according to claim 7, wherein the method comprises the following steps: in the step (7), according to the ancient hydrogeological conditions analyzed in the step (6), if the water flow direction is satisfied, the water flows from the replenishing area confirmed in the step (5) to the drainage zone confirmed in the step (3), a complete diameter supplementing drainage system is formed; if not, the diameter compensating row system does not exist.
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| CN112731549A (en) * | 2020-12-07 | 2021-04-30 | 核工业北京地质研究院 | Method for predicting sandstone-type uranium mineralization scenic spot based on multi-source geological information |
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