CN114384600A - Method for evaluating flow capacity of water containing oxygen and uranium in sandstone-type uranium ore - Google Patents
Method for evaluating flow capacity of water containing oxygen and uranium in sandstone-type uranium ore Download PDFInfo
- Publication number
- CN114384600A CN114384600A CN202111463795.6A CN202111463795A CN114384600A CN 114384600 A CN114384600 A CN 114384600A CN 202111463795 A CN202111463795 A CN 202111463795A CN 114384600 A CN114384600 A CN 114384600A
- Authority
- CN
- China
- Prior art keywords
- uranium
- oxygen
- structural
- flow capacity
- sandstone
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
- G01V9/007—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00 by detecting gases or particles representative of underground layers at or near the surface
Landscapes
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Engineering & Computer Science (AREA)
- Remote Sensing (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention belongs to the field of uranium ore geological exploration, and particularly discloses a method for evaluating the flow capacity of water containing oxygen and uranium in sandstone-type uranium ore, which comprises the following steps: s101, recovering the structural evolution of a structural layer where a uranium reservoir is located on the basis of structural deformation characteristic analysis; s102, acquiring paleoburial depth, paleoinclination and paleomigration distance parameters of oxygen-containing uranium-containing water of the uranium reservoir in historical periods of each geological based on a planar structure diagram corresponding to each structural deformation period; s103, obtaining a Telasker sorting coefficient based on particle size analysis of a uranium reservoir; and S104, calculating the flow capacity coefficient of the oxygen-containing uranium-containing water in the uranium reservoir, and determining the flow capacity of the oxygen-containing uranium-containing water in each geological history period. The method can quantitatively evaluate the flowing capacity of the oxygen-containing uranium-containing water in the history period of uranium mineralization so as to provide important parameters for evaluating the uranium mineralization potential and favorable area prediction of sandstone-type uranium ores.
Description
Technical Field
The invention belongs to the field of uranium ore geological exploration, and particularly relates to a method for evaluating the flow capacity of water containing oxygen and uranium in sandstone-type uranium ore.
Background
Uranium resources are important strategic resources, and the demand of uranium resources is continuously increased along with the rapid development of nuclear power in China. Therefore, the enhancement of uranium mine exploration and development is necessary to guarantee and accelerate the development of nuclear power. The sandstone-type uranium ore occupies an important position in the total amount of world uranium resources, and in recent decades, with the continuous development of an in-situ leaching uranium mining technology, the advantages of low cost and low pollution of sandstone-type uranium ore development are increasingly highlighted, and the key point of uranium ore exploration in China is shifted to sandstone-type uranium ore in a large sedimentary basin and becomes one of important ore finding types in China. Sandstone-type uranium ore is taken as an aquatic mineral product, the formation of uranium ore deposit is a result of water-rock interaction, and the processes of uranium source, migration and enrichment are all independent of the participation of underground water. The aquifer provides space for enrichment and storage of uranium, the underground water circulation provides power for migration of uranium in the aquifer, and the redox environment of the underground water controls the hydrological geochemistry process of conversion between uranium of different valence states. Therefore, the formation of uranium ore is actually the process of redistributing uranium at the water-rock interface due to the change of the oxidation-reduction conditions of the groundwater in the radial direction of the oxygen-containing uranium-containing water.
Generally, in the uranium mineralization period, the larger the flow capacity coefficient of oxygen-containing uranium-containing water in a uranium reservoir is, the stronger the uranium mineralization effect is, and the greater the mineralization potential is. The area with large flow capacity coefficient of oxygen-containing uranium-containing water in the uranium reservoir in the uranium mineralization stage is often a uranium favorable area.
Therefore, for the favorable prediction of the beneficial zone of the sandstone-type uranium ore, a method for quantitatively, simply, conveniently and accurately evaluating the flow capacity of the water containing oxygen and uranium in the sandstone-type uranium ore is a technical problem which needs to be solved urgently at present.
Disclosure of Invention
The invention aims to provide a method for evaluating the flowing capacity of water containing oxygen and uranium in sandstone-type uranium ores, which can quantitatively evaluate the flowing capacity of the water containing oxygen and uranium in history periods of uranium ore formation so as to provide important parameters for evaluating the uranium ore formation potential and favorable area prediction of the sandstone-type uranium ores.
The technical scheme for realizing the purpose of the invention is as follows:
a method for evaluating the ability of water containing oxygen and uranium to flow in a sandstone-type uranium ore, the method comprising the steps of:
s101, recovering the structural evolution of a structural layer where a uranium reservoir is located on the basis of structural deformation characteristic analysis;
s102, acquiring paleoburial depth, paleoinclination and paleomigration distance parameters of oxygen-containing uranium-containing water of the uranium reservoir in historical periods of each geological based on a planar structure diagram corresponding to each structural deformation period;
s103, obtaining a Telasker sorting coefficient based on particle size analysis of a uranium reservoir;
and S104, calculating the flow capacity coefficient of the oxygen-containing uranium-containing water in the uranium reservoir, and determining the flow capacity of the oxygen-containing uranium-containing water in each geological history period.
The step S101 includes:
step S11, identifying an unconformity surface;
step S12, dividing a structural layer;
step S13, defining a basic construction style;
step S14, determining the time of constructing deformation in the construction style;
step S15, restoring the evolution of the section structure;
step S16, the planar structure is restored.
The step S14 specifically includes: collecting a sandstone sample, sorting apatite minerals after mechanical crushing, and then selecting the apatite minerals with good crystal forms under an electron microscope; the age of the apatite fission track, which is the deformation time of the construct, was tested using LA-ICP-MS.
The step S15 specifically includes: selecting a seismic section perpendicular to the trend of the deformation structure, and under the time constraint of the deformation of the structure, performing structural recovery of the section by using 2DMove software based on the structural background of the region where the deformation structure is located, thereby obtaining a structural section diagram corresponding to the time of deformation of each structure.
The step S16 specifically includes: and imaging the structural section map of each structural deformation time recovered by the seismic section into a plane structural map by using Surfer software, namely the plane structural map corresponding to each structural deformation time.
The step S102 includes:
step S21, reading the paleoburial depth H based on the planar structural diagram of each structural deformation time periodi；
Step S22, based on the height difference and horizontal distance of the buried depth of the adjacent contour line, calculating the paleo-dip angle thetai；
Step S23, based on the planar structure diagram of each structural deformation period, obtaining the horizontal migration distance L of the oxygen-containing uranium-containing wateri。
In step S22, the height difference and horizontal distance between the burial depths of adjacent isolines are expressed as:
wherein HiTime period Tg for structural deformationiThe paleoburial depth, m, of the contour line in the plane construction diagram; hi+1Time period Tg for structural deformationiThe paleoburial depth m of adjacent contour lines in the plane construction diagram; and Delta L is the height difference of the buried depth of the adjacent isolines, m.
The step S103 includes:
step S31, sample processing and testing;
step S32, determining a first quartile Q1And a third quartile Q3；
Step S33, calculating the Telasker sorting coefficient S0。
In the step S33, a tesque sorting coefficient S is calculated0The formula is as follows:
S0＝(Q1/Q3)/2。
in the step S104, a formula for calculating the flow capacity coefficient of the oxygen-containing uranium-containing water in the uranium reservoir is as follows:
r (t) is the flow capacity coefficient of the oxygen-containing uranium-containing water at time t, and is free of dimensional quantity; rhowIs the density of water, kg/m3(ii) a g is the acceleration of gravity, 9.8m/s2(ii) a H is buried depth, km; theta is the dip angle, degree, of the uranium reservoir;
porosity,%; l is the horizontal migration distance, km, of the oxygen-containing uranium-containing water; t is geological historical time, Ma; s0Is the tesque sorting coefficient.
The invention has the beneficial technical effects that:
1. the method for evaluating the flow capacity of the oxygen-containing uranium-containing water in the sandstone-type uranium ore calculates the flow capacity coefficient of the oxygen-containing uranium-containing water according to the paleo-parameters and the Telaske sorting coefficient of the oxygen-containing uranium-containing water on the basis of structural evolution recovery, quantitatively evaluates the flow capacity of the oxygen-containing uranium-containing water at each part and each period of a sandstone-type uranium ore reservoir, namely can quantitatively reveal the flow capacity of the oxygen-containing uranium-containing water at the main ore formation period of the sandstone-type uranium ore only according to the flow capacity coefficient of the oxygen-containing uranium-containing water, so as to provide important parameters for evaluating the uranium ore formation potential and favorable area prediction of the sandstone-type uranium ore.
2. The method for evaluating the flow capacity of the water containing oxygen and uranium in the sandstone-type uranium ore is applicable to all sandstone-type uranium ores, is not limited by a multi-phase structure evolution background, and is applicable to an early uranium ore exploration area and a late exploration mature development area.
3. The method breaks through the conventional qualitative evaluation of the flow capacity of the oxygen-containing uranium-containing water based on the ancient structural background, and can quantitatively represent the flow capacity of the oxygen-containing uranium-containing water in the uranium reservoir, so that the accuracy is higher.
Drawings
Fig. 1 is a schematic flow chart of a method for evaluating the flow capacity of water containing oxygen and uranium in sandstone-type uranium ores, provided by the invention;
FIG. 2 is a schematic diagram of the structure evolution recovery result (ancient buried depth map) provided by the present invention;
fig. 3 is a schematic diagram of the paleo-dip distribution of a uranium reservoir provided by the present invention.
Fig. 4 is a schematic diagram of the distribution of ancient horizontal migration distances of oxygen-containing uranium-containing water in a uranium reservoir provided by the invention.
Fig. 5 is a graph of the cumulative distribution of particle size composition of a sandstone sample in a uranium reservoir according to the present invention.
Fig. 6 is a schematic diagram of the distribution of the tesque sorting coefficient of the uranium reservoir provided by the present invention.
Fig. 7 is a schematic diagram of the distribution of the flow capacity coefficient of the oxygen-containing uranium-containing water in the uranium reservoir provided by the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
As shown in fig. 1, the present embodiment provides a method for evaluating the flow capacity of water containing oxygen and uranium in sandstone-type uranium ores, which specifically includes the following steps:
and S101, recovering the structural evolution of the structural layer where the uranium reservoir is on the basis of structural deformation characteristic analysis.
Step S101 may specifically include the following steps:
step S11, identifying an unconformity: on the basis of field geological survey, combining earthquake and well drilling and logging information, and mainly identifying an unconformity surface of an area, namely an interface which is discontinuously distributed on an earthquake section and a stratum in the well drilling and logging information;
step S12, dividing the structural layer: the number of the area unconformities can be 1 to several, the stratum between two area unconformities is divided into structural layers, and the number of the structural layers can be 1 to several;
step S13, specifying a basic configuration style: on the seismic section, explaining folds and faults in each structural layer by combining a field geological section, wherein each structural layer can have 0 to a plurality of folds and faults, and the forms and the stacking relationship of the folds and the faults in each structural layer and between the structural layers are basic structural patterns;
step S14, determining the time of constructing the deformation in the construction style: selective crossing structure1-2 sandstone samples in a structural layer are collected, the mass of the samples is 2 kg-3 kg, the samples are mechanically crushed to 40 meshes-60 meshes, apatite minerals are sorted by a gravity magnetic and heavy liquid method, and then the apatite minerals with good crystal forms are selected under a ZEISS AXIO imager.A1m electron microscope; testing the age t of the apatite fission track by using LA-ICP-MS, wherein the age t is the deformation time of the structure, the fold and fault of each structure layer have a corresponding formation time, and quantitatively determining the time sequence of the structure deformation according to the formation time of the fold and fault in and between each structure layer, wherein the structure deformation can have 1 stage to multiple stages, and each stage corresponds to a time Tgi；
Step S15, evolution and recovery of the section structure: selecting a seismic section perpendicular to the course of the deformed structure (fold and fault), at the time Tg of the deformation of the structureiUnder the constraint, based on the structural background of the region where the deformation structure is located, 2DMove software is used for structural recovery of the section, and the time Tg of deformation of each structureiCorresponding to a tectonic profile, i.e. each seismic section running perpendicular to the deformed tectonic profile has its corresponding time TgiThe profile of the structure recovery of (1);
step S16, planar structure recovery: selecting 15-20 seismic sections at equal intervals in the longitudinal direction and the transverse direction of a research area for section structure recovery, and enabling the seismic sections to be subjected to Tg at each timeiThe recovered construct profile was imaged using Surfer software to generate a planar construct map, i.e., the time period Tg for each construct deformationiThere is a corresponding plan construction view.
As shown in fig. 2, a schematic diagram of the structure evolution recovery result (paleoburial depth map) of the present embodiment is provided.
Step S102, deformation period Tg based on each structureiObtaining the ancient burial depth H of the uranium reservoir in the historical period of each geological feature according to the corresponding plane structure diagramiAngle of dip thetaiAnd an oxygen-containing uranium-containing water ancient migration distance parameter LiAnd therefore, the ancient parameter evolution history of the uranium reservoir in each geological history period is recovered.
The history of the evolution of the paleo-parameters may represent the paleo-parameters of uranium reservoirs at different times in a contour or similar manner. Step S102 may specifically include the following steps:
step S21, reading the ancient buried depth Hi: time period Tg based on deformation of each configurationiReading the time Tg of the uranium reservoir during the deformation period of each constructioniOld buried depth Hi；
In FIG. 2, the ancient buried depths H of different structural deformation periods can be directly readi. I.e. the middle region has a greater burial depth, generally greater than 500m, and the north and south-east portions have a lesser burial depth, generally less than 200 m.
Step S22, obtaining a paleo-tilt angle thetai: the time Tg of each structural deformation on the contour line is obtained according to the formula (1) based on the height difference and the horizontal distance of the buried depth of the adjacent contour linesiAngle of paleo-dip thetai：
Wherein HiTime period Tg for structural deformationiThe paleoburial depth, m, of the contour line in the plane construction diagram; hi+1Time period Tg for structural deformationiThe paleoburial depth m of adjacent contour lines in the plane construction diagram; and Delta L is the height difference of the buried depth of the adjacent isolines, m.
The paleo-dip angle theta of the uranium reservoir calculated by the embodimentiDistribution, as shown in fig. 3. Paleodip theta for uranium reservoirs in western regionsiGenerally larger, typically greater than 20 °, and the paleodip angle θ of the north and south-east uranium reservoirsiAnd generally smaller, typically less than 10.
Step S23, obtaining the ancient horizontal migration distance L of the oxygen-containing uranium-containing wateri: directly determining the erosion area of the study area by field investigation and reading the previous data, Tg, at the time of deformation of each structureiThe horizontal distance L between the erosion source region and each point in the plan view is measuredi。
The ancient horizontal migration distance L of the oxygen-containing uranium-containing water in the uranium reservoir obtained in the embodimentiDistribution, as shown in fig. 4. The ancient horizontal distance from the middle part of the research area to the erosion source area is larger and is generally larger than 20km,the ancient horizontal distance from the edge area to the erosion source area is small and is generally less than 10 m.
And S103, obtaining a Telasker sorting coefficient based on uranium reservoir particle size analysis. Step S103 may specifically include the following steps:
step S31, sample processing and testing: taking 100 g-200 g of sandstone sample, crushing the sample into single rock particles by using a grinder, and sequentially adding excessive 6% hydrogen peroxide and 15% hydrochloric acid solution to respectively remove organic matters and cement;
adding deionized water to repeatedly wash the argillaceous matter and the acid liquor until the sandstone particles are clean and the PH paper shows neutral, putting the sample into a thermostat with the temperature of 105 ℃ until the sample is dried, naturally cooling the sample, and taking out the sample;
weighing 100g of the treated sample, putting the sample into a standard sieve, vibrating the sieve for 15min, weighing the mass of the sample in each standard sieve (each size fraction), and calculating the mass percentage of the sample in each size fraction.
Step S32, determining a first quartile Q1And a third quartile Q3: drawing the mass percentage data of each size fraction sample into a particle size composition cumulative distribution curve, and respectively taking the particle size values of 25% and 75% in the curve as a first quartile Q1And a third quartile Q3. The particle size composition cumulative distribution curve of a sandstone sample in a uranium reservoir obtained in this example is shown in fig. 5, where the first quartile Q is1And a third quartile Q30.22mm and 0.15mm respectively.
Step S33, calculating the Telasker sorting coefficient S0：
According to Q1、Q3Calculating the Telaske sorting coefficient S of the uranium reservoir by using a formula related to the Telaske sorting coefficient, namely formula (2)0
S0＝(Q1/Q3)/2 (2)
Telasker sorting coefficient S through 50 samples on a plane0The tesque sorting coefficient S of the uranium reservoir in the research area can be obtained through calculation0Planar contour map. The tesque sorting coefficient S of the sandstone sample in the uranium reservoir obtained in this example0Distribution, as shown in FIG. 6, the eastern Triaske sorting coefficient S in the study area0The size is small, namely the sorting property of the sandstone is good, and pores develop; and North and West Telasck sorting coefficients S0Larger, i.e. poorer sorting of the sandstone, less developed pores.
And S104, combining the formation water density and the gravity acceleration, calculating the flow capacity coefficient of the oxygen-containing uranium-containing water in the uranium reservoir by using a layer calculation module of Trinity software through the paleo-buried depth, the paleo-dip angle, the paleo-horizontal migration distance of the oxygen-containing uranium-containing water and the Telasck sorting coefficient, determining the flow capacity of the oxygen-containing uranium-containing water in each geological history period, and rebuilding the evolution history of the flow capacity of the oxygen-containing uranium-containing water in the sandstone-type uranium ore.
The flow capacity of the oxygen-containing uranium-containing water is in direct proportion to the component of gravity in the bedding direction and the porosity of the reservoir, and in inverse proportion to the horizontal migration distance. Therefore, the flow ability coefficient can be used for evaluating the flow ability of the uranium-bearing water containing oxygen in the sandstone-type uranium ore reservoir. And (3) calculating the flow capacity coefficient of the oxygen-containing uranium-containing water in the sandstone layer according to a formula (3) by combining the water density and the gravity acceleration of the stratum, the paleoburial depth, the paleotilt angle, the paleo-level migration distance of the oxygen-containing uranium-containing water, the Telasck sorting coefficient and the like, and quantitatively representing the flow capacity of each uranium reservoir in the oxygen-containing uranium-containing water in each geological history period so as to rebuild the flow capacity evolution history of the oxygen-containing uranium-containing water in the uranium reservoir. The calculation formula of the flow capacity coefficient of the oxygen-containing uranium-containing water in the uranium reservoir is as follows:
wherein R (t) is the flow capacity coefficient of the oxygen-containing uranium-containing water at time t, and has no dimension; rhowIs the density of water, kg/m3(ii) a g is the acceleration of gravity, 9.8m/s2(ii) a H is buried depth, km; theta is the dip angle, degree, of the uranium reservoir;
porosity,%; l is the horizontal migration distance, km, of the oxygen-containing uranium-containing water; t is geological historical time, Ma; s0Is the tesque sorting coefficient.
The larger the flow capacity coefficient of the oxygen-containing uranium-containing water of the uranium reservoir in the uranium mineralization stage is, the stronger the uranium mineralization effect is, and the greater the mineralization potential is. The flow capacity of the oxygen-containing uranium-containing water can be evaluated according to the flow capacity coefficient R (t) of the oxygen-containing uranium-containing water in the uranium reservoir:
when R (t) is more than or equal to 10, the flow capacity of the oxygen-containing uranium-containing water is strong;
when R is more than or equal to 5 and (t) is less than 10, the flow capacity of the oxygen-containing uranium-containing water is medium;
and when R is more than or equal to 0 and R (t) is less than 5, the flow capacity of the oxygen-containing uranium-containing water is poor.
As shown in fig. 7, a schematic diagram of the distribution of the flow capacity coefficient r (t) of the uranium-containing water containing oxygen in the uranium reservoir of this embodiment is shown.
In fig. 7, when the east slope region in the research region is in the main mineralization stage (20 Ma up to date), the flow capacity coefficient of oxygen-containing uranium-containing water in the uranium reservoir is relatively large, generally greater than 12, the conditions of supply and drainage of groundwater in the uranium mineralization stage are kept stable, the permeability of the aquifer is better, the flow capacity of receiving oxygen-containing uranium-containing water is high, and the uranium mineralization effect is high and the mineralization potential is high. The coefficient of the flow capacity of oxygen-containing uranium-containing water in the west and north uranium reservoirs in the research area is small, generally less than 8, the conditions of supply and drainage of underground water in the uranium mineralization stage are weak, the permeability of an aquifer is poor, the flow capacity of receiving the oxygen-containing uranium-containing water is weak, the uranium mineralization function is weak, and the mineralization potential is small.
Through above-mentioned technical scheme, through recovering the structure evolution history on uranium reservoir place tectonic layer obtains obtaining from ancient structure recovery the ancient parameter evolution history of oxygen-bearing uranium-bearing water calculates the tera-k sorting coefficient who obtains the uranium reservoir, combines formation water density and acceleration of gravity at last, through ancient buried depth, ancient inclination and oxygen-bearing uranium-bearing water ancient horizontal migration distance and tera sorting coefficient etc. calculate the flow capacity coefficient of oxygen-bearing uranium-bearing water among the uranium reservoir rebuilds the flow capacity evolution history of the oxygen-bearing uranium-bearing water of uranium reservoir. Therefore, the flowing capacity of oxygen-containing uranium-containing water in the main mineralization period of the sandstone-type uranium ore can be quantitatively revealed so as to guide the prediction of the beneficial area of the sandstone-type uranium ore:
when R (t) is more than or equal to 10, the flow capacity of the oxygen-containing uranium-containing water is strong;
when R is more than or equal to 5 and (t) is less than 10, the flow capacity of the oxygen-containing uranium-containing water is medium;
③ R is more than or equal to 0 and less than 5, the flow capacity of the oxygen-containing uranium-containing water is poor;
according to the specific implementation steps of the embodiment of the invention, the flow capacity of the oxygen-containing uranium-containing water can be quantitatively evaluated at different positions and different periods on the same sandstone-type uranium reservoir plane, so that the evolution history of the flow capacity of the oxygen-containing uranium-containing water in the uranium reservoir is rebuilt.
The present invention has been described in detail with reference to the drawings and examples, but the present invention is not limited to the examples, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention. The prior art can be adopted in the content which is not described in detail in the invention.
Claims (10)
1. A method for evaluating the ability of water containing oxygen and uranium to flow in sandstone-type uranium ores, the method comprising the steps of:
s101, recovering the structural evolution of a structural layer where a uranium reservoir is located on the basis of structural deformation characteristic analysis;
s102, acquiring paleoburial depth, paleoinclination and paleomigration distance parameters of oxygen-containing uranium-containing water of the uranium reservoir in historical periods of each geological based on a planar structure diagram corresponding to each structural deformation period;
s103, obtaining a Telasker sorting coefficient based on particle size analysis of a uranium reservoir;
and S104, calculating the flow capacity coefficient of the oxygen-containing uranium-containing water in the uranium reservoir, and determining the flow capacity of the oxygen-containing uranium-containing water in each geological history period.
2. The method for evaluating the flow capacity of uranium-bearing water in sandstone-type uranium ores according to claim 1, wherein the step S101 comprises:
step S11, identifying an unconformity surface;
step S12, dividing a structural layer;
step S13, defining a basic construction style;
step S14, determining the time of constructing deformation in the construction style;
step S15, restoring the evolution of the section structure;
step S16, the planar structure is restored.
3. The method for evaluating the flow capacity of the uranium-bearing water in sandstone-type uranium ore according to claim 2, wherein the step S14 is specifically: collecting a sandstone sample, sorting apatite minerals after mechanical crushing, and then selecting the apatite minerals with good crystal forms under an electron microscope; the age of the apatite fission track, which is the deformation time of the construct, was tested using LA-ICP-MS.
4. The method for evaluating the flow capacity of the uranium-bearing water in sandstone-type uranium ore according to claim 2, wherein the step S15 is specifically: selecting a seismic section perpendicular to the trend of a deformation structure, and under the constraint of the deformation time of the structure, performing structural recovery of the section by using 2DMove software based on the structural background of the region where the deformation structure is located, thereby obtaining a structural section diagram corresponding to each structural deformation time.
5. The method for evaluating the flow capacity of the uranium-bearing water in sandstone-type uranium ore according to claim 2, wherein the step S16 is specifically: and imaging the structural section map of each structural deformation time recovered by the seismic section into a plane structural map by using Surfer software, namely the plane structural map corresponding to each structural deformation time.
6. The method for evaluating the flow capacity of uranium-bearing water in sandstone-type uranium ores according to claim 1, wherein the step S102 comprises:
step S21, reading the paleoburial depth H based on the planar structural diagram of each structural deformation time periodi；
Step S22, based on the height difference and horizontal distance of the buried depth of the adjacent contour line, calculating the paleo-dip angle thetai；
Step S23, based on the planar structure diagram of each structural deformation period, obtaining the horizontal migration distance L of the oxygen-containing uranium-containing wateri。
7. The method for evaluating the flow capacity of the uranium-bearing water in sandstone-type uranium ore according to claim 6, wherein in the step S22, the height difference and horizontal distance of the burial depth of the adjacent isolines are expressed by the following formula:
wherein HiTime period Tg for structural deformationiThe paleoburial depth, m, of the contour line in the plane construction diagram; hi+1The ancient burial depth m of adjacent contour lines in a Tgi plane structural diagram in the period of structural deformation; and Delta L is the height difference of the buried depth of the adjacent isolines, m.
8. The method for evaluating the flow capacity of uranium-bearing water in sandstone-type uranium ores according to claim 1, wherein the step S103 comprises:
step S31, sample processing and testing;
step S32, determining a first quartile Q1And a third quartile Q3；
Step S33, calculating the Telasker sorting coefficient S0。
9. The method for evaluating the flow ability of uranium-bearing water in sandstone-type uranium ore according to claim 8, wherein in step S33, a tesque sorting coefficient S is calculated0The formula is as follows:
S0＝(Q1/Q3)/2。
10. the method for evaluating the flow capacity of the water containing oxygen and uranium in the sandstone-type uranium ore according to claim 9, wherein in the step S104, the formula for calculating the flow capacity coefficient of the water containing oxygen and uranium in the uranium reservoir is as follows:
r (t) is the flow capacity coefficient of the oxygen-containing uranium-containing water at time t, and is free of dimensional quantity; rhowIs the density of water, kg/m3(ii) a g is the acceleration of gravity, 9.8m/s2(ii) a H is buried depth, km; theta is the dip angle, degree, of the uranium reservoir;
porosity,%; l is the horizontal migration distance, km, of the oxygen-containing uranium-containing water; t is geological historical time, Ma; s0Is the tesque sorting coefficient.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111463795.6A CN114384600A (en) | 2021-12-03 | 2021-12-03 | Method for evaluating flow capacity of water containing oxygen and uranium in sandstone-type uranium ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111463795.6A CN114384600A (en) | 2021-12-03 | 2021-12-03 | Method for evaluating flow capacity of water containing oxygen and uranium in sandstone-type uranium ore |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114384600A true CN114384600A (en) | 2022-04-22 |
Family
ID=81196783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111463795.6A Pending CN114384600A (en) | 2021-12-03 | 2021-12-03 | Method for evaluating flow capacity of water containing oxygen and uranium in sandstone-type uranium ore |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114384600A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2021
- 2021-12-03 CN CN202111463795.6A patent/CN114384600A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Li et al. | Three-dimensional mineral prospectivity modeling for targeting of concealed mineralization within the Zhonggu iron orefield, Ningwu Basin, China | |
| CN109270589B (en) | Method for positioning sandstone-type uranium ore favorable ore-forming rock facies zone | |
| Irvine et al. | Geophysical exploration for epithermal gold deposits | |
| CN111967631A (en) | Method for predicting prospect area of early mineralization of sandstone-type uranium deposit exploration | |
| CN110727034A (en) | Sandstone-type uranium ore mapping method | |
| Hu et al. | Sequence and sedimentary characteristics of upper Cretaceous Sifangtai Formation in northern Songliao Baisn, northeast China: Implications for sandstone-type uranium mineralization | |
| CN114384600A (en) | Method for evaluating flow capacity of water containing oxygen and uranium in sandstone-type uranium ore | |
| Li et al. | Reservoir architecture and fracture characterization of low-permeability sandstone reservoir: a case study of Biandong oilfield, Jinhu depression, northern Jiangsu Basin, China | |
| Liu et al. | Sequence Stratigraphy of the Lower Cretaceous Uraniferous Measures and Mineralization of the Sandstone‐hosted Tamusu Large Uranium Deposit, North China | |
| CN113534284A (en) | Method for estimating development characteristics of sand oxidation zone by using water quality parameters | |
| Hahn et al. | Geology of the Lisbon Valley sandstone-hosted disseminated copper deposits, San Juan County, Utah | |
| Yang et al. | The Ordos Basin: Sedimentological Research for Hydrocarbons Exploration | |
| CN113960288B (en) | Quantitative evaluation method for source-sink system | |
| CN115861551A (en) | Digital well construction method for in-situ leaching uranium mining | |
| Shang et al. | Sedimentary system and sand bodies distribution of the second member of the Xujiahe Formation in the Xinchang area, Western Sichuan Depression, China | |
| Haas et al. | Integrated stratigraphic, sedimentological and petrographical evaluation for CERN’s Future Circular Collider subsurface infrastructure (Geneva Basin, Switzerland-France) | |
| Creason et al. | Towards A Geo-Data Science Method for Assessing Rare Earth Element and Critical Mineral Occurrences in Coal and Other Sedimentary Systems | |
| Parnell | Introduction: Approaches to dating and duration of fluid flow and fluid-rock interaction | |
| CN117372745A (en) | Identification method of sedimentary stratum ancient river course | |
| CN113009591B (en) | Ancient landform restoration method | |
| 蒋函 et al. | Zhang Xintao, Zhang Li, Liu Xiaojian | |
| Helvoort | Complex confining layers: a physical and geochemical characterization of heterogeneous unconsolidated fluvial deposits using a facies-based approach | |
| 蒋函 et al. | Sun Jinggui, Liu Yang, Xu Zhikai, Xu Zhitao, Chu Xiaolei, Gu Alei | |
| CN117114158A (en) | Screening and predicting method suitable for basin peripheral sandstone type uranium deposit ore-forming remote scenic spot | |
| Gongwen et al. | RESOURCE-ENVIRONMENT JOINT FORECASTING USING BIG DATA MINING AND 3D/4D MODELING IN LUANCHUAN MINING DISTRICT, CHINA |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |