Drilling construction method for uranium exploration

Abstract

The embodiment of the present invention provides a drilling construction method for uranium exploration, which is carried out in a working area, including: analyzing existing data related to the working area to determine the prospecting target layer; conducting field route geological and radioactive surveys according to the distribution characteristics of the prospecting target layer, and delineating the prospecting target area according to the results of the survey; determining the geological conditions of the ore deposit in the prospecting target area; determining the type of exploration according to the geological conditions of the ore deposit in the prospecting target area; determining the borehole spacing according to the exploration type and the exploration stage; deploying multiple boreholes in the prospecting target area according to the borehole spacing; wherein the boreholes include core drill holes and impact drill holes, and the number of core drill holes is less than the number of impact drill holes. A drilling construction method for uranium exploration provided according to the embodiment of the present application can improve the drilling construction efficiency of uranium exploration and reduce costs.

Description

Technical Field

[0001] The invention belongs to the field of uranium ore exploration, and in particular relates to a high-efficiency and low-cost drilling construction method. Background Art

[0002] Drilling is an essential part of uranium exploration. The drilling construction method directly determines the efficiency, cost and quality of exploration and evaluation. It is urgent to establish an efficient and low-cost drilling construction method. Summary of the invention

[0003] In view of the above problems, the present application is proposed to provide a drilling construction method for uranium mine exploration that overcomes the above problems or at least partially solves the above problems.

[0004] According to an embodiment of the present application, a drilling construction method for uranium exploration is provided, and the uranium exploration is carried out in a working area, including: analyzing existing data related to the working area to determine the prospecting target layer; conducting field route geological and radioactive surveys according to the distribution characteristics of the prospecting target layer, and delineating the prospecting target area according to the results of the survey; determining the geological conditions of the ore deposit in the prospecting target area; determining the exploration type according to the geological conditions of the ore deposit in the prospecting target area; determining the borehole spacing according to the exploration type and the exploration stage; deploying multiple boreholes in the prospecting target area according to the borehole spacing; wherein the boreholes include core drill holes and impact drill holes, and the number of core drill holes is less than the number of impact drill holes.

[0005] According to an embodiment of the present application, a drilling construction method for uranium mine exploration is provided, which can improve the drilling construction efficiency of uranium mine exploration and reduce the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0006] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0007] Figure 1 A schematic diagram of a drilling construction method for uranium mine exploration according to an embodiment of the present invention;

[0008] Figure 2 A schematic diagram of the relationship between the working area and the prospecting target area of ​​an embodiment of the present invention;

[0009] Figure 3 A schematic diagram of the relationship between the prospecting target layer and the outcrop according to an embodiment of the present invention;

[0010] Figure 4 A schematic diagram of a drilling deployment grid according to an embodiment of the present invention. DETAILED DESCRIPTION

[0011] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0012] Next, the present invention is further described in detail by taking the drilling construction method for the exploration of phosphorite-type uranium deposits in northern Saudi Arabia as an example. It is understandable that the method provided by the embodiment of the present invention can be applied not only to phosphorite-type uranium deposits, but also to other mineral species with similar mineralization conditions. Similarly, the method provided by the embodiment of the present invention can be applied not only to northern Saudi Arabia, but also to other regions in Saudi Arabia, Jordan, Morocco, the United States, Canada, Australia, Central Asia and my country, and the present invention is not limited to this.

[0013] According to an embodiment of the present invention, a drilling construction method for uranium ore exploration is provided, referring to Figure 1 ,include:

[0014] Step S101, the system collects and analyzes existing data to determine the target layer for prospecting.

[0015] Combination Figure 2 and Figure 3 Based on the geological, geophysical, geochemical, remote sensing, aerial radio, aeromagnetic, drilling and mineral data in the working area 21, the prospecting target layer 30 and the distribution characteristics of the prospecting target layer 30 in the working area 21 are determined. It can be understood that although Figure 2 The working area 21 is shown as a rectangular area, but in fact the working area 21 in the present invention can be of any shape, and the present invention does not limit this.

[0016] Systematically collect geological, geophysical, geochemical, remote sensing, aerial radio, aeromagnetic, drilling, phosphorite reports and existing uranium mineralization points and abnormal point information in the Saniyat area in northern Saudi Arabia, especially large-scale geological data and previous surveys, evaluations and exploration reports on phosphate and uranium mines. Comprehensively analyze the regional geological background and the geological background of the work area 21, sedimentary-tectonic evolution and its relationship with uranium-phosphorus enrichment. Determine the Saniyat phosphorite section 30 as the prospecting target layer, and find out the distribution characteristics of the Saniyat phosphorite section.

[0017] The existing data may include data related to the work area 21. It may be data on geology, remote sensing, geophysical exploration, aerial radiography, aeromagnetic, drilling, phosphorite reports, existing uranium mineralization points, abnormal point information, etc. of the work area 21, especially large-scale geological data and previous survey and exploration evaluation reports on phosphate and uranium mines. By comprehensively analyzing the above data related to the work area 21, the regional geological background and the geological background of the work area 21, the sedimentary-tectonic evolution and its relationship with uranium-phosphorus enrichment, etc. are determined.

[0018] Based on the analysis results of the existing data, we have a preliminary understanding of the distribution characteristics, geology and radioactive characteristics of the phosphorite in the work area 21. The Senyat phosphorite section is determined to be the prospecting target layer 30. The surface of the Senyat phosphorite section is exposed along the Senyat cliff, extending northward, with a nearly horizontal occurrence and a dip angle of about 0.5° to 3°.

[0019] Step S102, conduct field route geological and radioactive surveys according to the distribution characteristics of the prospecting target layer, and delineate the prospecting target area based on the survey results.

[0020] See also Figure 3 , A is the side of the stratum exposed on the surface, and B is the side of the stratum buried underground. The prospecting target layer 30 has an outcrop 31, which refers to the part of the prospecting target layer 30 exposed on the surface. The number of outcrops 31 may be multiple, that is, the prospecting target layer 30 may have multiple parts exposed on the surface. The outcrop 31 may be a natural outcrop formed naturally, or it may be an artificial outcrop revealed by various projects.

[0021] According to the characteristics of the strata and lithology exposed in the work area and the distribution characteristics of the prospecting target layer, the field measurement route is planned. The strata in the Senyat area are nearly horizontal and extend diagonally to the north. The prospecting target layer of the Senyat phosphorite section is exposed along the east-west Senyat cliff. According to the above characteristics, the field measurement route 22 can be planned with a route spacing of 1 to 2 km, and geological and radioactive surveys can be carried out on the outcrop 31 and the upper and lower surrounding rocks in a direction perpendicular to the strata.

[0022] According to the above-planned field measurement route 22, geological and radioactive surveys are carried out at different lithology changes to obtain the results of geological and radioactive surveys. In this embodiment, the scale range of geological and radioactive surveys is 1:10000~1:5000. Of course, other scales with suitable values ​​can also be used, and the present invention does not limit this. In addition, regional sections that pass through the strata are selected to carry out 1:10000~1:5000 gamma spectrum measurement, soil radon gas measurement, and audio frequency magnetotelluric measurement to identify the deep mineralization environment. In this embodiment, in addition to analyzing the results of geological surveys and radioactive surveys of the outcrop 31 of the prospecting target layer 30, 1:10000~1:5000 gamma spectrum measurements, soil radon gas measurements, and audio-frequency magnetotelluric measurements are carried out along the north-south regional profile to identify the deep mineralization environment. The distribution characteristics of the prospecting target layer 30 are determined by combining the geological data, drilling data, and mineral data collected in step S101, and the lithofacies paleogeography and ore-controlling factors are analyzed. For example, based on the results of the geological and radioactive surveys at the outcrop 31, the morphology, occurrence, scale, thickness, and grade of the uranium mineralization body at the outcrop 31 of the prospecting target layer 30 can be identified. After obtaining the geological and radioactive survey results of multiple outcrops, combined with the geological data, drilling data, mineral data collected in step S101, and the above-mentioned gamma spectrum measurement, soil radon gas measurement, and audio-frequency magnetotelluric measurement results, the extension stability, grade continuity, etc. can be ascertained, and then combined with the analysis of lithofacies paleogeography and ore-controlling factors to determine the distribution of the prospecting target layer 30, the distribution of uranium mineralization bodies in the prospecting target layer 30 can be roughly determined.

[0023] In this embodiment, based on the results of geological and radioactive surveys, combined with the study of mineralization laws, the middle section of the southern area of ​​Seyyat is delineated as the prospecting target area 23. It can be understood that although Figure 2 The prospecting target area 23 in the figure is a rectangular area, but in fact the prospecting target area 23 in the present invention can be of any shape, and the present invention does not limit this.

[0024] Step S103, selecting a representative profile in the prospecting target area for measurement to obtain the geological conditions of the ore deposit.

[0025] The representative profile is a profile in which the prospecting target layer 30 in the prospecting target area 23 has a complete structure, a clear top plate and a clear bottom plate, and is completely exposed to the surface. The structural integrity here means that the contact surface between the prospecting target layer 30 and the upper and lower surrounding rocks is relatively clear and complete, so that the data at the profile has a high reference value.

[0026] Representative sections were selected to carry out geological and radioactive measurements and sampling work. The lithology, color, structure, texture, occurrence, mineral composition and radioactive content of the Senyat phosphate rock section and its upper and lower surrounding rocks of each representative section were observed and recorded in detail. The thickness of different lithologies, P2O5 content and uranium content of the Senyat phosphate rock section of each representative section were counted, the relationship between different lithologies and uranium mineralization was analyzed, and the horizontal and vertical sections of each representative section were compared to determine the geological conditions of the ore deposits within the prospecting target area 23 in the Senyat area.

[0027] In this embodiment, the scale used for conducting geological and radioactive measurements is greater than the scale used for conducting geological and radioactive surveys. In this embodiment, the scale range of geological and radioactive measurements can be 1:500 to 1:100, and of course, other scales with suitable values ​​can also be used, and the present invention does not limit this.

[0028] The geological conditions of the ore deposits in the prospecting target area 23 include: length, width, ore body shape, thickness variation coefficient, grade variation coefficient, etc. Through the geological conditions of the ore deposits in the prospecting target area, the distribution law of the prospecting target layer is revealed, and the mineralization mechanism of the Sainiat area is preliminarily studied in combination with the analysis of lithofacies paleogeography and ore-controlling factors.

[0029] Step S104, determining the exploration type according to the geological conditions of the ore deposit.

[0030] The division of exploration types is mainly determined by geological factors such as the scale of phosphorite-type uranium mineralization bodies (strike length and dip width of the ore body), morphological complexity, thickness stability and grade variation. According to the geological conditions of the ore deposit, the exploration type is divided into three levels, namely the first exploration type, the second exploration type and the third exploration type.

[0031] If the geological conditions of the ore deposit in the prospecting target area meet the following conditions, it will be determined as the first exploration type: the length of the uranium mineralization body is ≥500 m, the width is ≥250 m, the ore body is layered, quasi-layered, or large vein-like in shape, the thickness variation coefficient is less than 50%, and the grade variation coefficient is less than 60%.

[0032] If the geological conditions of the ore deposit in the target area meet the following conditions, it will be determined as the second exploration type: the uranium mineralization body is 200 m to 500 m long and 100 m to 250 m wide, the ore body is layered, stratified, lens-shaped, or cylindrical in shape, the main ore body is basically continuous, the main ore body occurrence is relatively stable, the thickness variation coefficient is 50%≤<180%, and the grade variation coefficient is 60%≤<120%.

[0033] If the geological conditions of the ore deposit in the prospecting target area meet the following conditions, it will be determined as the third exploration type: the length of the uranium mineralization body is less than 200 m, the width is less than 100 m, the ore body shape is irregular vein, net vein, lens, columnar, barrel, cystic, the thickness variation coefficient is ≥180%, and the grade variation coefficient is ≥120%.

[0034] According to the investigation results of the geological conditions of the ore deposit, combined with the analysis of lithofacies paleogeography and previous drilling data, it was found that the strike length of the phosphorite-type uranium mineralization body in the designated prospecting target area 23 is greater than 8 km, the dip extension width is greater than 6 km, the ore body is layered or quasi-layered in shape, the thickness changes steadily (the thickness variation coefficient is less than 50%), and the uranium mineralization is relatively uniform (the grade variation coefficient is less than 60%), which is determined to be the first exploration type.

[0035] If the geological conditions of the ore deposit do not fully meet all the conditions of a certain exploration type, it will be identified as the next exploration type. For example, when the geological conditions of the ore deposit do not fully meet the first exploration type, it will be identified as the second exploration type; when the geological conditions of the ore deposit do not fully meet the second exploration type, it will be identified as the third exploration type.

[0036] Step S105, determining the drilling spacing according to the survey type and survey stage.

[0037] The exploration stage includes the survey stage, detailed investigation stage and prospecting stage, etc. Different exploration stages have different borehole spacing requirements, which are interconnected and interrelated. In this embodiment, the survey stage is carried out, the purpose of which is to submit inferred resource volume and determine the borehole spacing.

[0038] The borehole spacing depends on the survey type and survey stage. When the borehole spacing is determined based on the survey type and survey stage, for the same survey stage, the borehole spacing corresponding to the first survey type, the second survey type and the third survey type decreases in sequence; for the same survey type, the borehole spacing corresponding to the survey stage, the detailed survey stage and the exploration stage decreases in sequence.

[0039] Step S106, deploying multiple core drills and impact drills according to the drilling spacing.

[0040] Combination Figure 4 The drilling spacing is determined based on the exploration type and exploration stage, and multiple boreholes are deployed in the prospecting target area. The boreholes include core drill holes 41 and impact drill holes 42, and the number of core drill holes 41 is less than the number of impact drill holes 42.

[0041] In this embodiment, a core drill (DC drill) is used to perform drilling construction in the core drill hole 41, and an impact drill is used to perform drilling construction in the impact drill hole 42, and the number of the impact drill holes 42 is much greater than the number of the core drill holes 42. The impact drill can be an air reverse circulation impact drill (RC drill) or other types of impact drills, such as a liquid circulation impact drill.

[0042] See also Figure 4 In this embodiment, since it is the first survey type and is in the survey stage, the borehole spacing can be designed to be 400m. According to the borehole spacing, the borehole deployment grid is determined.

[0043] In such Figure 4 The drilling deployment grid shown has a plurality of cells. The side length of each cell corresponds to the drilling spacing, and this correspondence can be a scale of a predetermined value. The drilling deployment grid has a plurality of intersections formed by horizontal and vertical lines, and each intersection corresponds to the actual position of the drilling deployment.

[0044] According to the drilling deployment grid, multiple boreholes distributed in a grid are deployed. It should be noted that, in the present invention, according to the drilling deployment grid, multiple boreholes distributed in a grid are deployed, which means that the actual position of each drilling deployment is deployed with reference to the position corresponding to the intersection in the drilling deployment grid. In actual construction, due to the influence of construction conditions, there may be a situation where the drilling holes cannot be deployed strictly according to the positions corresponding to the intersections in the drilling deployment grid. At this time, the actual position closest to the intersection that is suitable for deploying the drilling holes should be selected for deployment. Therefore, the grid formed by the multiple boreholes actually deployed may not be exactly the same as the drilling deployment grid, but even so, each borehole is deployed with reference to the drilling deployment grid.

[0045] In the prospecting target area, according to Figure 2 The drilling deployment grid shown deploys multiple boreholes distributed in a grid shape. The core drill holes 41 distributed in a grid shape are deployed with a preset multiple of the drilling spacing as the spacing. The preset multiple is a positive integer greater than or equal to 2. The specific value of the preset multiple is determined by the thickness variation coefficient and the grade variation coefficient in the prospecting target area 23. Under the condition that the thickness variation coefficient is less than 50% and the grade variation coefficient is less than 60%, the preset multiple can be appropriately increased. In this embodiment, the drilling spacing is designed to be 400m, and the preset multiple can be twice, that is, twice the drilling spacing, that is, 800m. According to the drilling deployment grid, the core drill holes 41 distributed in a grid shape are deployed with a drilling spacing of 800m. According to the position where the core drill holes 41 are not deployed in the drilling deployment grid, the impact drill holes 42 are deployed, that is, the intersection of the core drill holes 41 not deployed in the drilling deployment grid corresponds to the actual position, and is determined as the position where the impact drill holes 42 are deployed.

[0046] When the exploration stage is the detailed investigation stage, the borehole spacing can be doubled compared with the borehole spacing of the same exploration type in the survey stage, that is, it is reduced to half of the borehole spacing of the same exploration type in the survey stage; when the exploration stage is the prospecting stage, the borehole spacing can be doubled compared with the borehole spacing of the same exploration type in the detailed investigation stage, that is, it is reduced to half of the borehole spacing of the same exploration type in the detailed investigation stage.

[0047] In addition, in specific construction, analogy methods can be used when there are similar mineralization conditions. In areas with fewer exploration projects, different drilling spacings can be compared, and statistical methods can be used to determine the optimal project spacing.

[0048] After the borehole spacing is determined, the number of core drill holes 41 and impact drill holes 42 can be determined according to the size of the prospecting target area 23. The following description assumes that the shape of the prospecting target area 23 is a rectangle.

[0049] The length of the prospecting target area 23 is L km, the width of the prospecting target area 23 is W km, the borehole spacing is X km, and the preset multiple is N. A grid is deployed according to the borehole spacing, and then core drill holes 41 distributed in a grid are deployed with a spacing of NX km, and impact drill holes 42 are deployed according to positions in the borehole deployment grid where core drill holes 41 are not deployed.

[0050] The total number of deployed boreholes T can be expressed as:

[0051]

[0052] The number D of core drill holes 41 can be expressed as:

[0053]

[0054] The number R of holes 42 drilled by the impact drill can be expressed as:

[0055]

[0056] During calculation, when L and W are not integer multiples of X or NX, the quotient obtained after dividing L or W by X or NX is rounded down.

[0057] When the preset multiple is 2, and L and W are large enough, the core drill holes 41 account for about 25%, the impact drill holes 42 account for about 75%, and the ratio of the number D of core drill holes 41 to the number R of impact drill holes 42 is 1:3. For example, the Senyat prospecting target area is 8 km long and 6 km wide, with a drilling spacing of 400 m. A drilling deployment grid with a cell side length of 400 m is determined, and the preset multiple is 2. According to the drilling deployment grid, core drill holes 41 are deployed at a drilling spacing of 800 m, and impact drill holes 42 are deployed in the remaining locations.

[0058] The total number of deployed boreholes T = (8 / 0.4+1) × (6 / 0.4+1) = 21 × 16 = 336;

[0059] The number of core drill holes 41 D = (8 / 0.8+1) × (6 / 0.8+1) = 11 × 8 = 88;

[0060] The number of holes 42 drilled by the impact drill is R=336-88=248;

[0061] The proportion of core drills is 88 / 336=26%, and the proportion of impact drills is (336-88) / 336=74%.

[0062] When the preset multiple is 3, the core drilling hole 41 accounts for a lower proportion. Taking the Senyat prospecting target area as an example,

[0063] The total number of deployed boreholes T = (8 / 0.4+1) × (6 / 0.4+1) = 21 × 16 = 336;

[0064] The number of core drill holes 41 D = (8 / 1.2+1) × (6 / 1.2+1) = 7 × 6 = 42;

[0065] The number of holes 42 drilled by the impact drill is R=336-42=294;

[0066] The proportion of core drills is 42 / 336=12.5%, and the proportion of impact drills is (336-42) / 336=87.5%.

[0067] The drilling construction method for uranium ore exploration provided by the embodiment of the present invention is a drilling combination construction method that mainly uses impact drilling and supplemented by core drilling area control. Taking the northern area of ​​Saudi Arabia as an example, the unit price of core drilling is 100 US dollars / meter, and the average daily drilling is 20-40 meters. The unit price of air reverse circulation drilling is 50 US dollars / meter, and the average daily drilling is 100-200 meters. It greatly saves costs and improves efficiency and quality, thereby providing reliable guarantees for the exploration and evaluation of phosphorite-type uranium deposits and resource estimation.

[0068] The drilling construction method provided by the embodiment of the present invention deploys core drill holes distributed in a grid shape with a preset multiple of the drilling spacing as the spacing, and deploys impact drill holes at other locations where core drill holes are not deployed. First, such a drilling deployment method can make full use of the impact drill, give full play to the characteristics of impact drills such as high efficiency, low cost, easy construction, and high quality in carbonate rocks or complex lithology, reduce the proportion of core drills, and at the same time, the samples can meet the exploration requirements and resource estimation requirements; second, the uniformly distributed core drills can achieve a macroscopic grasp of the strata, structure, magmatic rock, alteration characteristics and uranium mineralization characteristics, which is convenient for geological personnel to observe, study, and construct while reasonably adjusting and deploying drilling, and maximize the use of workload. Third, the cores obtained by core drilling can accurately identify the distribution range, occurrence, scale, and continuity of the target layer for prospecting, record the color, structure, and structure of the ore in detail, study the material composition and quality of the ore indoors, carry out horizontal and vertical stratigraphic structure comparisons, and analyze lithology, facies, ore-controlling factors, and mineralization mechanisms.

[0069] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A drilling construction method for uranium ore exploration, wherein the uranium ore exploration is carried out in a working area, the method comprising: Analyze the existing data related to the work area and determine the target layer for prospecting; Conduct field route geological and radioactive surveys based on the distribution characteristics of the prospecting target layer, and delineate the prospecting target area based on the results of the survey; Determine the geological conditions of the ore deposits within the prospecting target area; Determine the exploration type according to the geological conditions of the ore deposits in the prospecting target area; Determine the spacing of the boreholes according to the type of survey and the stage of survey; According to the borehole spacing, a plurality of boreholes are deployed in the prospecting target area; wherein the boreholes include core drill holes and impact drill holes, and the number of the core drill holes is less than the number of the impact drill holes; Wherein, deploying a plurality of boreholes in the prospecting target area according to the borehole spacing includes: Determining a drilling deployment grid according to the drilling spacing; Deploy a plurality of boreholes distributed in a grid shape according to the borehole deployment grid; Wherein, according to the borehole deployment grid, deploying a plurality of boreholes distributed in a grid shape includes: According to the drilling deployment grid, the core drill holes distributed in a grid are deployed with a preset multiple of the drilling spacing as the spacing, wherein the preset multiple is a positive integer greater than or equal to 2; The impact drill is deployed according to the position where the core drill is not deployed in the drilling deployment grid.

2. The method according to claim 1, wherein: According to the borehole deployment grid, deploying a plurality of boreholes distributed in a grid shape further comprises: The total number of deployed boreholes, the number of core drill holes, and the number of impact drill holes are determined based on the borehole spacing and the size of the prospecting target area.

3. The method according to claim 2, wherein: Determining the total number of deployed boreholes, the number of core drill holes, and the number of impact drill holes according to the borehole spacing and the size of the prospecting target area includes: When the prospecting target area is a rectangle: Total number of boreholes deployed The number of holes drilled by the core drill The number of holes drilled by the impact drill R=TD; Among them, N is the preset multiple, L is the length of the prospecting target area, W is the width of the prospecting target area, and X is the drilling distance.

4. The method according to claim 1, wherein: According to the distribution characteristics of the prospecting target layer, a field route geological and radioactive survey is carried out. According to the results of the survey, the prospecting target area is delineated to include: Plan the field survey route according to the strata and lithology outcrop characteristics of the work area and the distribution characteristics of the prospecting target layer; Carry out geological and radiological surveys on outcrops where lithology changes according to the field survey route; Based on the results of the geological and radioactive surveys, combined with the study of mineralization laws, the prospecting target area is delineated.

5. The method according to claim 4, wherein: Determination of the geological conditions of the ore deposits within the prospecting target area includes: Select representative sections within the prospecting target area, conduct geological and radioactive measurements on the representative sections, and determine the geological conditions of the ore deposits within the prospecting target area.

6. The method according to claim 5, wherein: The representative profile is a profile in which the top and bottom plates of the prospecting target layer in the prospecting target area are clear, the structure is complete and the profile is completely exposed to the surface.

7. The method according to claim 5, wherein: Select representative sections in the prospecting target area, conduct geological and radioactive measurements on the representative sections, and determine the geological conditions of the ore deposits in the prospecting target area, including: According to the geological and radioactive measurements and sample analysis test results of the representative sections, the lithology, color, structure, texture, occurrence, mineral composition and radioactive content of each representative section shall be ascertained; Counting the thickness of each lithology and the uranium content of each representative section to determine the relationship between different lithologies and uranium mineralization; The statistical results of multiple representative profiles are compared horizontally and vertically to determine the geological conditions of the ore deposits in the prospecting target area.

8. The method according to claim 1, wherein: The existing data include geological, geophysical, geochemical, remote sensing, drilling and mineral information related to the work area.

9. The method according to any one of claims 1 to 8, wherein: The geological conditions of the ore deposits in the prospecting target area include: The length, width, ore body shape, thickness variation coefficient and grade variation coefficient of the uranium mineralization body in the prospecting target area.

10. The method according to claim 9, wherein: The types of exploration determined according to the geological conditions of the deposit include: If the geological conditions of the ore deposit in the prospecting target area meet the following conditions, it is determined to be the first exploration type: the length of the uranium mineralization body is ≥500m, the width is ≥250m, the ore body is layered, quasi-layered, or large vein-like, the thickness variation coefficient is less than 50%, and the grade variation coefficient is less than 60%; If the geological conditions of the ore deposit in the target area meet the following conditions, it is determined to be the second exploration type: the length of the uranium mineralization body is 200m to 500m, the width is 100m to 250m, the ore body shape is layered, layered, lens-shaped, cylindrical, the main ore body is basically continuous, the main ore body occurrence is relatively stable, 50%≤thickness variation coefficient <180%, 60%≤grade variation coefficient <120%; If the geological conditions of the ore deposit in the prospecting target area meet the following conditions, it will be determined as the third exploration type: the length of the uranium mineralization body is less than 200m, the width is less than 100m, the ore body shape is irregular vein, network vein, lens, columnar, barrel, sac-shaped, the thickness variation coefficient is ≥180%, and the grade variation coefficient is ≥120%.

11. The method according to claim 10, wherein: The survey stage includes the general survey stage, detailed survey stage and exploration stage.

12. The method according to claim 11, wherein: When the borehole spacing is determined based on the survey type and the survey stage, for the same survey stage, the borehole spacing corresponding to the first survey type, the second survey type and the third survey type decreases in sequence.

13. The method according to claim 12, wherein: When determining the borehole spacing based on the survey type and survey stage, for the same survey type, the borehole spacing corresponding to the general survey stage, detailed survey stage and exploration stage decreases successively.

14. The method according to claim 1, wherein: The percussion drill drilling is air reverse circulation percussion drill drilling.

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