Roll-shaped uranium deposit prospecting method

Abstract

The invention belongs to the field of uranium prospecting technical methods, and particularly relates to a roll-shaped uranium deposit prospecting method, which comprises the following steps of: (1) collecting basic geological information of a uranium metallogenic ground in a working area through geological survey; (2) establishing a working area deep space geologic structure by using a geophysical measurement technology method; (3) carrying out hydrogeological survey, and establishing a hydraulic connection between a surface water system and each stratum sand body; (4) establishing a uranium metallogenic basic geological condition analysis model, and predicting the uranium metallogenic potential of the working area; and (5) carrying out drilling verification, tracing and controlling the front line of the interlayer oxidation zone, and discovering and positioning the rolled uranium ore body. According to the method, the prospecting of the roll-shaped uranium ore deposit is decomposed into five links of ground survey, geophysical survey, hydrogeological survey, basic geological condition analysis and drilling verification, so that the technical problem that the existing prospecting exploration working technical method is relatively single is solved.

Description

Technical Field

[0001] This invention belongs to the field of geological work techniques and methods, specifically relating to a method for prospecting uranium deposits in the form of coils. Background Technology

[0002] Convoluted uranium deposits are crescent-shaped sandstone-type uranium deposits where the ore body occurs in a cross-section along the direction of groundwater flow (IAEA, 1996). The mineralization space of convoluted uranium deposits is located tens to thousands of meters underground, making them typical blind deposits. Traditional radiometric instruments, due to their limited penetration, cannot detect deeply buried uranium deposits. Appropriate working techniques and methods are needed to conduct mineralization prediction and verification from the surface inwards and from shallow to deep to discover deep ore bodies. Systematic exploration of sandstone-type uranium deposits in my country has only a history of about 30 years, and the techniques used in exploration are relatively simple, leaving considerable room for further exploration and development. Summary of the Invention

[0003] The purpose of this invention is to provide a method for prospecting volute uranium deposits. This method decomposes the prospecting process into five stages: surface investigation, geophysical survey, hydrogeological investigation, basic geological condition analysis, and drilling verification. During this process, geological information collection, spatial geological structure construction, groundwater recharge and drainage system establishment, mineralization prediction, and uranium orebody location are completed. Based on the fundamental theory of volute uranium deposits, this invention applies the characteristic that the uranium orebody highly coincides with the front line of the inter-layer oxidation zone to the method design. In mineralization prediction, the front line of the inter-layer oxidation zone is used as the basis for spatial location of the uranium orebody; in drilling verification, the front line of the inter-layer oxidation zone is used as a direct prospecting marker.

[0004] The technical solution adopted in this invention is a method for prospecting uranium deposits in coiled formations, comprising the following steps: Step (1): Collect basic surface geological information on uranium mineralization in the work area through geological survey; Step (2): Establish the deep spatial geological structure of the work area using geophysical measurement techniques; Step (3): Conduct hydrogeological surveys to establish the hydraulic connection between surface water systems and sand bodies in various strata; Step (4): Establish a basic geological condition analysis model for uranium mineralization and predict the uranium mineralization potential of the working area; Step (5): Conduct drilling and verification to trace the control of the interlayer oxidation zone front line and discover and locate the coiled uranium ore body.

[0005] The steps (1) mentioned above include: conducting field geological surveys, collecting information on landforms, strata, structures and distribution of radioactive elements in the work area, and studying the source and replenishment system of uranium ore-forming materials.

[0006] Step (2) as described above includes: studying the deep geological structure of the Earth's crust using geophysical methods, classifying the tectonic units of the study area; exploring the deep strata and tectonic characteristics of the work area, and establishing the spatial geological structure of the work area.

[0007] The steps (3) mentioned above include: conducting hydrogeological surveys, investigating the porosity, permeability and water-bearing characteristics of aquifers, and understanding the basic hydrogeological characteristics of aquifers; identifying the distribution of surface water systems and the distribution patterns of radioactive elements in water bodies; and establishing the hydraulic connection between aquifers in various strata and surface water systems based on stratigraphic and fault structure analysis.

[0008] Step (4) as described above includes: guided by the theory of aqueous uranium deposits, and taking into account the strata, structure and groundwater conditions of the working area, establishing a model of key basic geological conditions for uranium mineralization in the working area; taking interlayer oxidation as the main line and based on the results of geological surveys, inferring the development of deep interlayer oxidation zones and the spatial occurrence location of the interlayer oxidation zone front line; based on the characteristic that the rolled uranium ore body and the interlayer oxidation zone front line highly overlap, and combined with the geochemical characteristics of uranium elements in the sandstone body of the prospecting target layer, predicting the scale of uranium mineralization and the spatial occurrence location of uranium ore bodies.

[0009] The steps (5) mentioned above include: based on the uranium mineralization prediction results, carrying out deep drilling to expose the mineralization, arranging boreholes at the predicted uranium ore body production locations, verifying the mineralization prediction results; arranging subsequent boreholes according to the geological exposure of the benchmark exploration line, gradually controlling the interlayer oxidation zone front line, and exposing and locating the uranium ore body.

[0010] The key basic geological conditions for uranium mineralization in step (4) as described above should include, but are not limited to: ① having a stable stratigraphic structure with alternating layers of mud (coal)-sand-mud, and the ore-bearing sand bodies having high C and S content and having undergone pre-enrichment of U elements; ② the favorable mineralization location being the relatively stable tectonic limbs of monoclinics and anticlines; ③ having a complete groundwater recharge, runoff and discharge system, and the mineralization period being an infiltration-type hydrogeological environment.

[0011] The beneficial effects of this invention are as follows: Based on the fundamental mineralization theory of sandstone-type (volute) uranium deposits in interlayered oxidized zones, and referencing the exploration experience and lessons learned from volute uranium deposits in my country, this invention summarizes and combines various geological working methods applied in the prospecting and exploration of volute uranium deposits. This combination of techniques is characterized by high effectiveness and strong applicability. Its significant meaning lies in integrating prospecting techniques based on the mineralization characteristics and theories of volute uranium deposits, ensuring the integrity of the basic working methods for volute uranium deposits, improving the efficiency of prospecting and exploration, and possessing significant potential for widespread application. This invention has been comprehensively applied in the prospecting and exploration of volute uranium deposits on the southern margin of the Ili Basin, achieving outstanding prospecting and exploration results. Attached Figure Description

[0012] Figure 1 This is a flowchart of the method for prospecting for coiled uranium deposits according to the present invention.

[0013] Figure 2 This is a borehole layout diagram of the Wukuerqi uranium deposit in the first application embodiment of the present invention.

[0014] Among them are: 1. Thrust faults; 2. Boreholes and their numbers; 3. Exploration lines and their numbers; 4. Interlayer oxidation zone front line; 5. Industrial uranium ore bodies. Detailed Implementation

[0015] Theoretically, in sandstone-type uranium deposits, only coiled uranium ore bodies spatially coincide with the front line of the inter-layer oxidation zone, generally located within tens of meters before and after this front line. This invention, targeting this characteristic of coiled uranium ore bodies, locates them by controlling the spatial distribution of the inter-layer oxidation zone front line through drilling, based on ground surveys, geophysical measurements, and prediction of uranium mineralization potential. Practical application in mineral exploration demonstrates that this invention has a sound theoretical basis, a reasonable method design, and achieves efficient and accurate exploration results.

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments: like Figure 1 As shown, the method for prospecting for coiled uranium deposits provided by this invention includes the following steps: Step (1) Conduct field geological surveys and collect basic surface geological information on uranium mineralization in the work area.

[0017] Geological survey scale selection: 1:100,000–1:50,000 is mainly selected for the regional evaluation stage, 1:25,000–1:10,000 for the general survey stage, and 1:5,000–1:2,000 for the detailed survey stage.

[0018] Using profile measurement, mapping, and route geological surveys as the main methods, the distribution of strata (rock masses), rock types, and sedimentary formation characteristics are investigated; incidental ground gamma or gamma spectroscopy measurements are selected to obtain information on the content, distribution, and migration of radioactive elements in strata (rock masses); structural characteristics are investigated, information useful for inferring the deep structural pattern is collected, and a basic structural framework for the work area is established to provide a basis for the work deployment to identify deep structures.

[0019] Step (2) Use geophysical measurement techniques to establish the deep spatial geological structure of the work area.

[0020] Within the basin or first-order tectonic unit, select areas for remote sensing satellite image interpretation, airborne gravity and magnetic measurements, and radioactive field measurements, or the above data collection work, to gain a general understanding of the regional geological structure characteristics and the attribution of tectonic units, to roughly understand the regional distribution characteristics of radioactive elements, and to carry out roughing work in favorable metallogenic areas of coiled uranium deposits.

[0021] Within the scope of favorable mineralization areas (usually secondary or tertiary tectonic units of a basin), geophysical methods such as audio-frequency magnetotelluric sounding and shallow seismic surveys are selected to investigate the deep strata and tectonic characteristics, construct the spatial geological structure of the work area, and deduce the possibility of the formation of the basin-mountain hydrodynamic system and its control by strata and tectonics.

[0022] Step (3) Conduct hydrogeological surveys and establish hydraulic connections between surface water systems and sand bodies in various strata.

[0023] The study focuses on Mesozoic and Cenozoic strata, investigating their exposure and sedimentary structure characteristics. Using porosity, permeability, and water-bearing capacity as indicators, the study aims to identify the basic hydrogeological characteristics of mineralized strata that are thick, have coarse-grained rocks, and have undergone oxidation.

[0024] The investigation will cover the distribution of water systems and the content of radioactive elements in the water in the work area, understand the replenishment of groundwater by surface water systems, conduct long-term observations of major rivers, and obtain groundwater replenishment data.

[0025] Based on the analysis of deep spatial geological structure and combined with the results of hydrogeological surveys, the groundwater recharge, runoff and drainage system is deduced, and the hydraulic connection between surface water system and Quaternary groundwater and groundwater is established.

[0026] Step (4) Establish a basic geological condition analysis model for uranium mineralization and predict the uranium mineralization potential of the working area.

[0027] Analyze the mineralized lithology and lithofacies conditions of the working area, focusing on whether the strata have interbedded sand and mud sedimentary structures, the thickness and uranium content of the primary gray sandstone, and whether they have dual uranium sources, and screen strata that meet the basic conditions as favorable strata for mineral exploration.

[0028] Analyze the metallogenic tectonic conditions in the working area, whether the tectonic occurrence characteristics are suitable for uranium mineralization, whether the tectonic tilting is appropriate, and whether the destruction of favorable strata affects the integrity and continuity of the ore-bearing sand bodies. Overall, evaluate whether the structure possesses the conditions for uranium mineralization.

[0029] The recharge, runoff, and discharge conditions of mineralized groundwater in the working area were analyzed. Based on the results of tectonic, stratigraphic, and hydrogeological surveys, the recharge, runoff, and discharge paths of oxygen- and uranium-bearing water in the working area were deduced, and the integrity and smoothness of the recharge, runoff, and discharge system were evaluated.

[0030] By comprehensively considering the metallogenic strata, structure, and groundwater conditions of the conical uranium deposit, a three-dimensional model of the key basic geological conditions for uranium mineralization in the working area is established to comprehensively evaluate the basic geological conditions for mineralization in the working area.

[0031] Based on the principles of groundwater hydrodynamics and using groundwater runoff route analysis as a means, combined with the geochemical conditions of favorable mineral exploration strata, the development direction and scale of inter-stratum oxidation are analyzed and deduced, and the spatial distribution location of the inter-stratum oxidation zone front is inferred. This leads to the inference of the spatial occurrence location of coiled uranium ore bodies.

[0032] Step (5) Conduct drilling and verification to trace the control of the interlayer oxidation zone front line and discover and locate the uranium ore body.

[0033] Deploy uranium resource survey, evaluation and exploration projects, use drilling to trace and control the front line of the inter-layer oxide zone, verify its mineralization, verify and revise uranium mineralization prediction results, until the location and control of all uranium ore bodies are completed.

[0034] When laying out the project, a baseline exploration line should be set perpendicular to the strike of the inferred uranium ore zone, and this line should vary according to the strike of the inferred uranium ore zone. The baseline borehole is placed at the position of the inferred interlayer oxide zone front line on the baseline exploration line. If the baseline borehole exposes the interlayer oxide zone, exploration should proceed forward along the development direction of the interlayer oxide zone; if the baseline borehole does not expose the interlayer oxide zone, exploration should proceed backward until the interlayer oxide zone front line is controlled within a reasonable range of 200-400m. The subsequent layout of exploration lines and boreholes should be adjusted based on the results of the baseline exploration line construction.

[0035] After drilling, gamma logging is used to determine the grade, thickness, and spatial location of the uranium ore body; apparent resistivity and density logging are used to delineate strata and identify lithology to confirm the permeability of the ore and complete the spatial location of the sandstone-type uranium ore body.

[0036] Example 1: The following section uses the exploration and prospecting of the Wukurqi uranium deposit on the southern edge of the Ili Basin as an example to further illustrate this patent.

[0037] (1) Conducted field geological surveys in the southern margin of the Ili Basin, collected information on geomorphology, structure, lithology-lithofacies, distribution of radioactive elements and uranium source replenishment, and preliminarily collected basic geological information on uranium mineralization in the work area.

[0038] Depending on the complexity of the geological conditions on the southern edge of the Ili Basin and the different stages of the work, different working scales were selected for geological and surface radiometric measurements. Specifically, a 1:50,000 working scale was primarily used during the regional uranium resource survey and evaluation phase; subsequently, during the mineral exploration in the Wukurqi prospective area, ground surveys and mapping were conducted at scales ranging from 1:10,000 to 1:5,000, with a 1:2,000 working scale used in some outcrop areas.

[0039] The survey indicates that the Mesozoic and Cenozoic strata are discontinuously exposed at the basin margin. The Jurassic strata consist of fluvial sedimentary dark coal-bearing clastic rocks with an interbedded mud (coal)-sand-mud sedimentary structure. The gray primary sandstone has an average uranium content of 4.2%. 10 -6 The ancient uranium content in the volcanic rocks and granites of the southern erosion source area is 15.5%. 10 -6 It has a high uranium source background value.

[0040] The investigation has uncovered surface evidence of major faults, including the basin-controlling fault (F1), the Honghaigou fault (F2), the Zajistan fault (F3), the Ukurchi River fault (FW), and the Kurustai fault (F5). It has also established a preliminary tectonic surface feature characterized by the interweaving of east-west and north-south fault groups, providing a basis for the deployment of deep tectonic investigation work.

[0041] (2) By analyzing and utilizing the results of airborne gravity, magnetic and radioactive field measurements in the Ili Basin, we gained a general understanding of the deep geological structure and distribution characteristics of radioactive elements in the region, and screened out the favorable uranium mineralization structure in Wukuerqi. Through audio magnetotelluric sounding and shallow seismic measurements, we roughly determined the deep strata and structural characteristics of the Wukuerqi area and established the spatial geological structure.

[0042] Airborne gravity measurements along the southern margin of the basin reveal a broad and gentle gravity gradient zone, higher in the south and lower in the north, indicating that the Miocene cover strata are generally a gently dipping monocline structure. The airborne magnetic field across the basin is characterized by a large-area distribution of positive magnetic fields, and anomalies along the southern margin indicate the distribution of folds. The Wukuerqi area exhibits favorable mineralization structures characterized by alternating broad and gentle uplifts and depressions in the Mesozoic and Cenozoic strata, generally dipping northward.

[0043] The anomalous field of airborne radioactivity is distributed in a north-south strip from the foot of the mountain into the basin, and in a beaded pattern along the Ili River, indicating that radioactive elements migrate and accumulate under the influence of the river.

[0044] Various geophysical methods have been employed along the southern margin of the Ili Basin. Among them, audio-frequency magnetotelluric sounding is the most common, while shallow seismic surveys cover the largest area. Shallow seismic survey results show that the Ukurchi region is bounded by the Ukurchi River fault to the east and the Zagestan River to the west. Its overall structural morphology is a primary micro-uplift. The axis of the uplift lies between lines 397 and 445, trending north-northwest, with a width of approximately 1.8 km. The dip angle of the Mesozoic and Cenozoic strata in the axis is 4°–6°. The flanks of the uplift dip east and west at angles of 3°–7°. The deep geological structure characteristics determine the groundwater recharge-drainage system in this region, influencing the occurrence, development, and spatial location of uranium mineralization.

[0045] (3) A hydrogeological survey was conducted on the southern margin of the Ili Basin, focusing on the hydrogeological characteristics of the surface water system and the Mesozoic and Cenozoic aquifers in the Wukuerqi area, and establishing the hydraulic connection between the surface water system and the Jurassic sand bodies.

[0046] The Mesozoic and Cenozoic aquifer outcrops on the southern margin of the basin exhibit sedimentary characteristics of interbedded mud and sand. Among them, the Jurassic strata, which is the key target for mineral exploration, can be divided into more than 20 layers of aquifer sand bodies in the Wukuerqi area, with an average thickness of 0.50 to 48.10 m. The main lithologies are sandstone and gravelly sandstone, which have good permeability and water-bearing capacity.

[0047] The survey revealed several major river systems, including the Honghaigou, Kujiertaigou, Wukuerqi, Zajistan, and Almalgou. These river basins generally exhibit three-tiered terrace topography, with riverbeds infiltrating and recharging groundwater. Flow observations of the Wukuerqi River indicate an average daily recharge of approximately 8670 m³ to the Mesozoic and Cenozoic strata. 3 / d, in addition, the Mesozoic and Cenozoic strata in the basin margin outcrop area receive infiltration from surface water and Quaternary unconfined water, which together constitute the source of groundwater recharge in the Wukurqi area.

[0048] (4) Based on the results of geological surveys, geophysical measurements and hydrogeological work in the Wukuerqi area, and using strata, structure and groundwater as basic parameters, establish a three-in-one basic geological condition analysis model for uranium mineralization to predict the uranium mineralization potential of the work area.

[0049] Analysis of mineralization lithology and lithofacies. The main prospecting target layer, the Lower Jurassic Shuixigou Group, is a dark coal-bearing clastic rock formation formed by braided river delta sediments. It has an interbedded mud (coal)-sand-mud sedimentary structure that is complete and continuously distributed at depth. -6 The uranium loss rate is greater than 20%, and the uranium loss rate in the volcanic rocks and granites in the erosion source area is generally over 60%, while the uranium leaching rate is 20%, indicating that the uranium mineralization in the Wukuerqi area has favorable conditions of dual uranium sources. Among them, the sand bodies in the outcrop area of ​​the Xishanyao Formation of the Shuixigou Group have an average thickness of 11.80-32.15m and have undergone strong oxidation, showing good mineralization conditions.

[0050] Analysis of mineralization tectonic conditions. The overall tectonic activity in the working area is moderate, with strata exposed at the basin margin or covered by thin layers of Quaternary strata, occurring at low angles within the basin; the strata are well preserved, and the Xishanyao Formation ore-bearing aquifers occur continuously and stably on shallow seismic profiles; the working area is located in the area sandwiched between the Ukurqi River Fault and the Zajistan River Fault, possessing a relatively independent hydrogeological unit, which in turn forms a relatively stable metallogenic geological unit, providing favorable conditions for uranium mineralization.

[0051] Analysis of Groundwater Recharge, Drainage, and Convection Conditions in the Ore-forming Area. Based on the spatial geological structure constituted by tectonics and stratigraphy, it is deduced that the groundwater in the Xishanyao Formation ore deposit in the working area mainly originates from the erosion source area in the southern part of the basin and is recharged by the Ukurqi River. Under the influence of gravity, oxygen- and uranium-bearing groundwater flows roughly along the dip of the strata and along the sand bodies of the Xishanyao Formation, with mineralization occurring during the runoff process. Remote sensing and seismic data show that there is a near-east-west trending concealed fault in the northern part of the Ukurqi area, which serves as a local discharge source for groundwater in the working area. The swampy areas distributed along the Ili River constitute the discharge area for all groundwater, including the working area. The groundwater recharge, drainage, and convection system in the working area is complete and unobstructed. Analysis of the basic geological conditions for uranium mineralization indicates that the Ukurqi area possesses favorable basic geological conditions for the formation of coiled uranium deposits.

[0052] (5) Deploy boreholes to conduct deep exploration, using the interlayer oxidation zone front line as a mineral exploration marker, gradually discover and control the interlayer oxidation zone front line, and accurately locate the uranium ore body.

[0053] Based on the basic theory of volute uranium deposit mineralization, it is predicted that the interlayer oxidation in the Xishanyao Formation of the working area generally advances in a planar manner from south to north. The interlayer oxidation zone is limited to the area between the Wukuerqi River Fault and the Zajistan River Fault, with a length of about 18 km. The width of the interlayer oxidation zone in different sections is about 3000-5000 m. That is, it is inferred that the volute uranium ore body is located in space within a range of about 3000-5000 m north of the Xishanyao Formation sand body outcrop.

[0054] Drilling was conducted to verify the estimated spatial location of the coiled uranium ore body, such as... Figure 2 The project selected the central area of ​​the prediction zone and laid out exploration line 411 along the 0° exploration line direction. Benchmark borehole 41159 was located at the inferred uranium ore body position. After drilling, the interlayer oxidation zone of the Xishanyao Formation was exposed, suggesting the coiled uranium ore body moved north to borehole 41181. After drilling borehole 41181, the target layer sand body was exposed as primary gray and without uranium mineralization. Therefore, the coiled uranium ore body was inferred to have moved south to borehole 41173. After drilling borehole 41173, the interlayer oxidation zone was again exposed, suggesting the uranium ore body moved to borehole 41177. Finally, borehole 41177 exposed the industrial uranium ore body.

[0055] Based on the findings from borehole 411, and following the principle of starting with sparser areas and gradually increasing density, exploration lines 445 (800m spacing), 429 (400m spacing), 421 (200m spacing), and 437 (200m spacing) were subsequently constructed, completing the delineation and control of the uranium ore bodies between exploration lines 411 and 445. The same principle was applied to borehole layout in other areas of the mining area, gradually completing the exposure and control of all ore bodies within the mining area.

[0056] After drilling is completed, borehole gamma logging is carried out to determine the grade, thickness and spatial location of the uranium ore body; geophysical logging is carried out to identify the lithology of the strata, determine the permeability of the ore, and complete the precise spatial location of the coiled uranium ore body.

[0057] The foregoing has provided a detailed description of the implementation of the present invention. However, the present invention is not limited to the above examples. Within the scope of knowledge possessed by those skilled in the art, various modifications can be made without departing from the spirit of the present invention. Any content not described in detail in this invention can be derived from existing technologies.

Claims

1. A method for prospecting uranium deposits in coiled formations, characterized in that, Includes the following steps: Step (1): Collect basic surface geological information on uranium mineralization in the work area through geological survey; Step (2): Establish the deep spatial geological structure of the work area using geophysical measurement techniques; Step (3): Conduct hydrogeological surveys and establish hydraulic connections between surface water systems and sand bodies in various strata; Step (4): Establish a basic geological condition analysis model for uranium mineralization and predict the uranium mineralization potential of the working area; Step (5): Conduct drilling and verification to trace the control of the interlayer oxidation zone front line and discover and locate the coiled uranium ore body.

2. The method for prospecting coiled uranium deposits as described in claim 1, characterized in that... Step (1) includes: conducting field geological surveys, collecting information on landforms, strata, structures and distribution of radioactive elements in the work area, and studying the source and replenishment system of uranium ore-forming materials.

3. The method for prospecting coiled uranium deposits as described in claim 1, characterized in that... Step (2) includes: studying the deep geological structure of the Earth's crust using geophysical methods, classifying the tectonic units of the study area, exploring the deep strata and tectonic characteristics of the work area, and establishing the spatial geological structure of the work area.

4. The method for prospecting coiled uranium deposits as described in claim 1, characterized in that... Step (3) includes: conducting hydrogeological surveys, investigating the porosity, permeability and water-bearing characteristics of aquifers, and understanding the basic hydrogeological characteristics of aquifers; identifying the distribution of surface water systems and the distribution patterns of radioactive elements in water bodies; and establishing the hydraulic connection between aquifers in each stratum and surface water system based on stratigraphic and fault structure analysis.

5. The method for prospecting coiled uranium deposits as described in claim 1, characterized in that... Step (4) includes: guided by the theory of aqueous uranium deposits, and taking into account the strata, structure and groundwater conditions of the working area, establishing a model of key basic geological conditions for uranium mineralization in the working area; taking interlayer oxidation as the main line and based on the results of geological surveys, inferring the development of deep interlayer oxidation zones and the spatial occurrence location of the interlayer oxidation zone front; based on the characteristic that the coiled uranium ore body and the interlayer oxidation zone front highly coincide, and combined with the geochemical characteristics of uranium elements in the sandstone body of the prospecting target layer, predicting the scale of uranium mineralization and the spatial occurrence location of uranium ore bodies.

6. The method for prospecting coiled uranium deposits as described in claim 5, characterized in that, The key geological conditions for uranium mineralization include: ① a stable stratigraphic structure with alternating layers of mud (coal)-sand-mud (coal), and ore-bearing sand bodies with high organic carbon and sulfide content and pre-enriched with uranium; ② favorable mineralization sites are the relatively tectonically stable monoclinic and anticline limbs; ③ a complete groundwater recharge, runoff, and discharge system, and an infiltration-type hydrogeological environment during mineralization.

7. The method for prospecting for coiled uranium deposits as described in any one of claims 1 to 6, characterized in that... Step (5) includes: based on the uranium mineralization prediction results, carrying out deep drilling to expose the mineralization, arranging boreholes at the predicted uranium ore body production locations, verifying the mineralization prediction results; arranging subsequent boreholes according to the geological exposure of the benchmark exploration line, gradually controlling the interlayer oxide zone front line, and exposing and locating the uranium ore body.

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