A method for locating ore body and a rapid sampling device for predicting and evaluating target area of niobium-tantalum ore

Abstract

The present application belongs to the technical field of geological prospecting and evaluation, and discloses a kind of ore body positioning method and rapid sampling device for niobium-tantalum ore target area prediction and evaluation.The present application is based on existing geological data, through the analysis of various geological bodies in 1:250,000-1:10,000 geological map and the identification of the distribution, shape, intrusive contact relationship and formation age of alkaline rock mass, the favorable metallogenic area is delineated;Through satellite and aerial image identification of linear structure, ring structure and alteration information, target area positioning is assisted;Through magnetic exploration, ore-bearing rock mass and fault structure are detected, and potential position of ore body is delineated, combined with geological data, geological properties of anomaly source are inferred;Using radioactive detection equipment, the total amount of gamma at different positions in the niobium-tantalum prediction target area is measured, and the position of niobium-tantalum ore is preliminarily judged according to the gamma anomaly result;Using rapid sampling device, target area is systematically sampled and analyzed.Through the method and device, metallogenic geological conditions and prospecting potential can be evaluated, and exploration grid is optimized.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of geological prospecting evaluation, and specifically relates to a method for positioning ore bodies in target area prediction and evaluation of niobium-tantalum mines and a rapid sampling device. BACKGROUND

[0002] The rapid sampling device and the method for positioning ore bodies in target area prediction and evaluation of niobium-tantalum mines relate to the rapid sampling and positioning of ore bodies in the process of mining niobium-tantalum mines through efficient and accurate equipment and methods to ensure the quality control of ores and the optimization of subsequent processes. It includes a sampling system and geological exploration, wherein the sampling system includes a drill bit, a drill rod and other drilling tools for penetrating the ground and contacting the niobium-tantalum ore body, and usually adopts a rotary or percussion drilling method.

[0003] When the existing sampling device samples the core in the niobium-tantalum ore body, the round shell is usually made to penetrate into the drill hole. When there are soft or unstable rock bodies in the ore bed, the round shell may move irregularly when penetrating, and even cause separation between the sampling shell and the core, thereby causing the phenomenon of shaking, which causes the sampling shell to be unable to stably wrap the core, and thus causes some samples of the core to fall off or break. In this way, the representative ore sample is affected, and the finally collected sample may not truly reflect the characteristics of the ore body. SUMMARY

[0004] To solve the problem of the shaking of the round shell in the background art, since the friction force between the round shell and the inner wall of the drill hole is unevenly distributed, the round shell may not be fixed enough. In the case of a relatively soft or irregular structure of the ore bed, different parts of the inner wall of the drill hole may be subjected to different degrees of friction, causing the round shell to shake. The present application provides a rapid sampling device and a method for positioning ore bodies in a niobium-tantalum mine target area.

[0005] To achieve the above-mentioned purpose, the present application provides the following technical solutions:

[0006] A method for positioning ore bodies in target area prediction and evaluation of niobium-tantalum mines, comprising the following steps:

[0007] Step 1: Based on existing geological data, analyze various geological bodies in 1:250,000-1:10,000 geological maps and identify the distribution, shape, intrusive contact relationship and formation age of alkali rock bodies, and delineate the favorable ore-forming area;

[0008] Step 2: Identify linear structures, ring structures and alteration information through satellite and aerial images to assist in target positioning;

[0009] Step 3: Detect ore-bearing rock bodies and fault structures through magnetic exploration, delineate the potential position of the ore body, and infer the geological properties of the anomaly source in combination with geological data;

[0010] Step four, using radioactive detection equipment, measure the total amount of gamma in different positions of niobium tantalum forecast target area, according to the gamma anomaly result to preliminary judge the location of niobium tantalum ore;

[0011] Step five, according to the analysis of step two, step three and step four, further select the target area, and then use the rapid sampling device to obtain the fresh rock sample of the coverage area, analyze the primary halo characteristics, judge the denudation degree and deep extension of the ore body, distinguish the ore anomaly and non ore anomaly, and determine the prospecting target area;

[0012] Step six, comprehensive above data, evaluate the metallogenic geological conditions and prospecting potential, and optimize the exploration grid.

[0013] A kind of niobium tantalum ore target area rapid sampling device, including working frame, the top of the working frame is fixedly connected with electric telescopic rod, the inner wall of the working frame is opened with square groove on both sides, the inner wall of the square groove is slidably connected with sliding shell, the top of the sliding shell is fixedly connected in the movable end of electric telescopic rod, further including, rapid sampling mechanism, the rapid sampling mechanism includes motor fixedly connected in the top of sliding shell, the output end of the motor is fixedly connected with rotating shaft, the bottom of the rotating shaft is fixedly connected with rotating disc, the bottom of the rotating disc penetrates sliding shell and extends to the outside of sliding shell, the outer wall of the sliding shell is communicated with grouting pipe on one side, the bottom of the rotating disc is provided with sampling assembly, for sampling niobium tantalum ore, the sampling assembly includes circular shell fixedly connected in the bottom of rotating disc, the outer wall of the circular shell is fixedly connected with four spiral bent plates, for preventing the end of circular shell from swinging.

[0014] Preferably, one side of the spiral bent plate is fixedly connected with a fixed bent plate, the inner wall of the fixed bent plate is fixedly connected to the outer wall of the circular shell, and one side of the fixed bent plate is fixedly connected with a fixed rod.

[0015] Preferably, the end of the fixed rod away from the fixed bent plate is fixedly connected to the end of another spiral bent plate, and the inner wall of the circular shell is provided with four first slits.

[0016] Preferably, four lifting bars are fixedly connected with a sampling shell, and the top of the rotating disc is respectively communicated with four circular pipes, one end of the circular pipe penetrates the circular shell and extends to the inside of the circular shell.

[0017] Preferably, the bottom of the circular shell is fixedly connected with an internal thread sleeve, the outer wall of the internal thread sleeve is threadedly connected with an external thread sleeve, and the bottom of the external thread sleeve is fixedly connected with a diamond drill.

[0018] Preferably, the inner wall of the circular shell is provided with a cleaning assembly, and the cleaning assembly includes a disc fixedly connected to the top of the inner wall of the circular shell, and four rotating plates are rotatably connected to the bottom of the disc.

[0019] Preferably, the bottom end of the rotating plate is rotationally connected with a connecting block, the bottom of the connecting block is fixedly connected with a clamping position shell, one end of the clamping position shell penetrates the sampling shell and extends to the inside of the sampling shell, the inner wall of the clamping position shell is fixedly connected with a special-shaped sponge strip, and the circular shell is provided with four second strip-shaped grooves in the inner wall close to the first strip-shaped groove.

[0020] Preferably, the bottom of the clamping position shell is provided with an auxiliary assembly, the auxiliary assembly comprises a circular rod fixedly connected to the bottom of the clamping position shell, the circular rod is arranged outside the sampling shell, one end of the circular rod away from the clamping position shell is fixedly connected with an arc-shaped plate, and the inner wall of the arc-shaped plate is fixedly connected with an arc-shaped cutting piece on one side.

[0021] Compared with the prior art, the present application has the following advantages:

[0022] The present application sets up a sampling assembly, starts the electric telescopic rod and the motor at the same time, drives the circular shell in the sampling assembly to descend, and drives the diamond drill to rotate, and carries out drilling work on the niobium-tantalum ore. In this process, the slurry is injected into the inside of the sliding shell through the grouting pipe, and the slurry flows to the inside of the circular shell through the sliding shell, thereby cooling the diamond drill, preventing the diamond drill from overheating during drilling. The circular shell drives the spiral bent plate to rotate, and the spiral bent plate is threadedly engaged with the hole wall during rotation, preventing the circular shell from swinging due to drilling too deep, reducing the damage or distortion of the rock core caused by overheating or excessive rotation of the drill, and ensuring the integrity of the sampling rock core. Because the fixed bent plate and the spiral bent plate are fixedly arranged with the fixed rod, the multiple spiral bent plates can be arranged as a whole, preventing the connection between the single spiral bent plate and the circular shell from being unstable during drilling.

[0023] The application sets the cooperation of the sampling assembly and the cleaning assembly. When the round shell descends and rotates, the lifting strip drives the sampling shell to move in the same way. When the sampling shell descends and rotates, the cone-shaped blade at the bottom of the sampling shell can make the drilled rock core enter the inside of the sampling shell, thereby performing the sampling work. During the slurry flow process, the slurry overflowed from the bottom of the diamond drilling tool mixes with the rock powder and is discharged upward. Due to the spiral arrangement of the multiple spiral bending plates, the radius inside the hole is expanded, which helps to improve the efficiency of slurry and rock powder discharge, reduces the friction between the drilling tool and the hole wall, and reduces the resistance during drilling, thereby improving the drilling efficiency. When the rock core enters the inside of the sampling shell, the generated thrust force makes the sampling shell vertically ascend, and the rotating plate rotates around the disc. The multiple rotating plates drive the special-shaped sponge strips in the cleaning assembly to move away from each other, so that the rock core smoothly enters the inside of the sampling shell. When the round shell rotates, the special-shaped sponge strips in the cleaning assembly rotate, and the special-shaped sponge strips contact the stationary rock core outer wall during the rotating process, thereby cleaning the rock core outer wall. During the slurry flow process, the slurry contacts the special-shaped sponge strips outside the sampling shell, the special-shaped sponge strips can filter the impurities in the slurry, the water in the slurry can wet the special-shaped sponge strips, the wet special-shaped sponge strips clean the rock core outer wall, and the integrity and accuracy of the rock core are ensured, and the quality of the sample is prevented from being affected by the unclean outer wall.

[0024] The application sets the cooperation of the sampling assembly, the cleaning assembly and the auxiliary assembly. When the rock core sampling is completed, the electric telescopic rod is reversely started to slightly ascend, the sampling shell and the disc gradually move away from each other due to the gravity of the sampling assembly itself, the multiple connecting blocks indirectly drive the clamping shells to move close to the inside of the sampling shell, and the multiple clamping shells drive the special-shaped sponge strips to move, thereby clamping the rock core, effectively preventing the rock core from being broken due to uneven external force or friction. This is crucial for ensuring the integrity of the rock core and improving the sampling quality, especially for the work of analyzing the complete rock core sample. When the multiple clamping shells move close to each other, the clamping shells drive the round rods to move, the round rods drive the arc-shaped plates and the arc-shaped cutting pieces to move, and the arc-shaped cutting pieces rotate with the cleaning assembly, thereby cutting the bottom end of the rock core, and facilitating the sampling shell to drive the rock core to ascend. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall top view structure of the application;

[0026] Figure 2 It is a schematic diagram of the bottom view structure of the grouting pipe of the application;

[0027] Figure 3 It is a schematic diagram of the cross-sectional structure of the sliding shell of the application;

[0028] Figure 4Enlarged view of A in the present application Figure 3 Enlarged view of A in the present application

[0029] Figure 5 Schematic view of the side structure of the spiral bent plate of the present application

[0030] Figure 6 Schematic view of the cross-sectional structure of the round shell of the present application

[0031] Figure 7 Enlarged view of B in the present application Figure 6 Enlarged view of B in the present application

[0032] Figure 8 Schematic view of the cross-sectional structure of the special-shaped sponge strip of the present application

[0033] Figure 9 Schematic view of the bottom structure of the arc-shaped cutting member of the present application

[0034] In the figure: 1, workbench; 2, electric telescopic rod; 3, square groove; 4, sliding shell; 5, rapid sampling mechanism; 51, motor; 52, rotating shaft; 53, grouting pipe; 54, rotating disc; 55, sampling assembly; 56, cleaning assembly; 57, auxiliary assembly; 551, round shell; 552, round pipe; 553, first slot; 554, lifting bar; 555, sampling shell; 556, spiral bent plate; 557, fixed bent plate; 558, fixed rod; 559, internal threaded sleeve; 5510, external threaded sleeve; 5511, diamond drill; 561, disc; 562, rotating plate; 563, connecting block; 564, clamping shell; 565, special-shaped sponge strip; 566, second slot; 571, round rod; 572, arc-shaped plate; 573, arc-shaped cutting member. DETAILED DESCRIPTION

[0035] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0036] As Figures 1 to 9 shown, the present application provides a method for ore body positioning for prediction and evaluation of niobium-tantalum ore target area, comprising the following steps:

[0037] Step one: based on existing geological data, through analysis of various geological bodies in 1:250,000-1:10,000 geological maps and identification of the distribution, shape, intrusive contact relationship and formation age of alkaline rock bodies, the favorable mineralization area is delineated;

[0038] Step two, identify linear structures, ring structures and alteration information through satellite and aerial images to assist target area positioning;

[0039] Step three, detect ore-bearing rock mass and fault structure through magnetic exploration to delineate potential location of ore body, and infer geological properties of abnormal source in combination with geological data;

[0040] Step four, measure total gamma of different positions in niobium-tantalum prediction target area by using radioactive detection equipment, and preliminarily judge the location of niobium-tantalum mine according to gamma anomaly results;

[0041] Step five, further select target area according to the analysis of steps two, three and four, then use a quick sampling device to obtain fresh rock samples in the coverage area, analyze primary halo characteristics, judge the denudation degree and deep extension of the ore body, distinguish between ore-induced anomalies and non-ore anomalies, and determine the prospecting target area;

[0042] Step six, evaluate the metallogenic geological conditions and prospecting potential based on the above data, and optimize the exploration grid.

[0043] The embodiment provides a quick sampling device for a niobium-tantalum mine target area, which comprises a working frame 1, a motorized telescopic rod 2 fixedly connected to the top of the working frame 1, square grooves 3 formed in the inner walls of the working frame 1, and a sliding shell 4 slidably connected to the inner walls of the square grooves 3.

[0044] The quick sampling mechanism 5 comprises a motor 51 fixedly connected to the top of the sliding shell 4, a rotating shaft 52 fixedly connected to the output end of the motor 51, a rotating disc 54 fixedly connected to the bottom of the rotating shaft 52, a grouting pipe 53 communicated with one side of the outer wall of the sliding shell 4, and a sampling assembly 55 arranged at the bottom of the rotating disc 54 and used for sampling the niobium-tantalum mine.

[0045] The above scheme is adopted: the helical bent plates 556 are threadedly engaged with the hole wall during rotation, preventing the circular shell 551 from swinging due to excessive drilling depth, and reducing the damage or distortion of the rock core caused by overheating or excessive rotation of the drilling tool, thereby ensuring the integrity of the sampling rock core.

[0046] One side of the helical bent plate 556 is fixedly connected with a fixed bent plate 557, the inner wall of the fixed bent plate 557 is fixedly connected to the outer wall of the circular shell 551, and one side of the fixed bent plate 557 is fixedly connected with a fixed rod 558.

[0047] Adopting the above scheme: because the fixed bending plate 557 and the spiral bending plate 556 are fixedly arranged with the fixed rod 558, the plurality of spiral bending plates 556 can be arranged as a whole, and the unstable connection of the single spiral bending plate 556 with the circular shell 551 during drilling is prevented.

[0048] The end of the fixed rod 558 away from the fixed bending plate 557 is fixedly connected to one end of another spiral bending plate 556, and the inner wall of the circular shell 551 is provided with four first slits 553, and the inner wall bottom of the first slit 553 is slidably connected with a lifting strip 554.

[0049] The four lifting strips 554 are fixedly connected with a sampling shell 555, the top of the rotating disc 54 is communicated with four circular pipes 552, and one end of the circular pipe 552 penetrates through the circular shell 551 and extends to the inside of the circular shell 551.

[0050] The bottom of the circular shell 551 is fixedly connected with an internal thread sleeve 559, the outer wall of the internal thread sleeve 559 is threadedly connected with an external thread sleeve 5510, and the bottom of the external thread sleeve 5510 is fixedly connected with a diamond drilling tool 5511.

[0051] Adopting the above scheme: the motor 51 drives the rotating shaft 52 and the rotating disc 54 to rotate, the rotating disc 54 drives the circular shell 551 and the internal thread sleeve 559 to rotate, and the internal thread sleeve 559 drives the external thread sleeve 5510 and the diamond drilling tool 5511 to rotate, so as to drill the niobium tantalum ore.

[0052] As shown in Figures 1 to 9 The inner wall of the circular shell 551 is provided with a cleaning assembly 56, the cleaning assembly 56 comprises a disc 561 fixedly connected to the inner wall top of the circular shell 551, and the bottom of the disc 561 is rotatably connected with four rotating plates 562.

[0053] The bottom end of the rotating plate 562 is rotatably connected with a connecting block 563, the bottom of the connecting block 563 is fixedly connected with a clamping shell 564, one end of the clamping shell 564 penetrates through the sampling shell 555 and extends to the inside of the sampling shell 555, the inner wall of the clamping shell 564 is fixedly connected with a special-shaped sponge strip 565, and the inner wall of the circular shell 551 close to the first slit 553 is provided with four second slits 566.

[0054] Adopting the above scheme: the slurry flow will contact the special-shaped sponge strip 565 outside the sampling shell 555, the special-shaped sponge strip 565 can filter the impurities in the slurry, the moisture in the slurry can wet the special-shaped sponge strip 565 itself, the wet special-shaped sponge strip 565 can clean the outer wall of the rock core, and the integrity and accuracy of the rock core are ensured, and the influence of the unclean outer wall on the quality of the sample is avoided.

[0055] The bottom of the clamping shell 564 is provided with an auxiliary assembly 57, which includes a round rod 571 fixedly connected to the bottom of the clamping shell 564, the round rod 571 is arranged outside the sampling shell 555, and the end of the round rod 571 away from the clamping shell 564 is fixedly connected with an arc-shaped plate 572, and the inner wall of the arc-shaped plate 572 is fixedly connected with an arc-shaped cutting piece 573.

[0056] By adopting the above scheme: when multiple clamping shells 564 are close to each other, they drive the round rod 571 to move through linkage, and then the round rod 571 pushes the arc-shaped plate 572 and the arc-shaped cutting piece 573 to move correspondingly. With the rotation of the cleaning assembly 56, the arc-shaped cutting piece 573 can accurately cut the bottom end of the rock core. This cutting process not only ensures the neat cutting of the bottom end of the rock core, avoiding inaccurate or difficult sampling due to irregular bottom end, but also provides better cooperation for the subsequent lifting of the rock core by the sampling shell 555. Through this design, the sampling work of the rock core becomes more smooth and efficient, and the cutting and lifting processes can be seamlessly connected, ensuring that the rock core can be smoothly taken out and kept intact, facilitating subsequent analysis and research.

[0057] The working principle and use process of the present application are as follows:

[0058] Start the electric telescopic rod 2 and the motor 51 at the same time, the electric telescopic rod 2 drives the sliding shell 4 to vertically descend along the inner wall of the square groove 3, the sliding shell 4 drives the motor 51 and the rotating shaft 52 to descend, the rotating shaft 52 drives the rotating disc 54 and the circular shell 551 to descend, and the motor 51 drives the rotating shaft 52 and the rotating disc 54 to rotate, the rotating disc 54 drives the circular shell 551 and the inner threaded sleeve 559 to rotate, and the inner threaded sleeve 559 drives the outer threaded sleeve 5510 and the diamond drill 5511 to rotate, for drilling work on the niobium-tantalum ore. In this process, the slurry is injected into the inside of the sliding shell 4 through the grouting pipe 53, the slurry enters the inside of the rotating disc 54 through the sliding shell 4, and the slurry enters the inside of the circular shell 551 through the rotating disc 54, thereby cooling the diamond drill 5511 to prevent overheating of the diamond drill 5511 during drilling. The circular shell 551 drives the spiral bent plate 556 to rotate, and the spiral bent plate 556 will be threadedly engaged with the hole wall during rotation to prevent the circular shell 551 from swinging due to drilling too deep, thereby reducing the damage or distortion of the rock core caused by overheating or excessive rotation of the drill, thereby ensuring the integrity of the sampled rock core. Because the fixed bent plate 557 and the spiral bent plate 556 are fixedly arranged with the fixed rod 558, the plurality of spiral bent plates 556 can be arranged as a whole, preventing the connection between a single spiral bent plate 556 and the circular shell 551 from being unstable during drilling.

[0059] When the round shell 551 is lowered and rotated, the lifting bar 554 drives the sampling shell 555 to perform the same movement, and when the sampling shell 555 is lowered and rotated, the drilled rock core can enter the inside of the sampling shell 555 due to the tapered blade at the bottom of the sampling shell 555, thereby performing the sampling work. During the slurry flow process, the mixed rock powder is discharged outward from the bottom of the diamond drill 5511 and upward due to the spiral arrangement of the plurality of spiral bending plates 556, which expands the radius inside the hole, helps to improve the efficiency of slurry and rock powder discharge, and reduces the friction between the drill and the hole wall, thereby reducing the resistance during drilling and improving the efficiency of drilling. When the rock core enters the inside of the sampling shell 555, the generated thrust force causes the sampling shell 555 to vertically ascend, and the rotating plate 562 rotates around the disc 561, and the plurality of rotating plates 562 drive the connecting block 563 and the clamping shell 564 to move away from each other along the inner wall of the sampling shell 555, and the clamping shell 564 drives the special sponge strip 565 to move away from each other, so that the rock core smoothly enters the inside of the sampling shell 555, and when the round shell 551 rotates, the disc 561 and the rotating plate 562 rotate, the rotating plate 562 drives the connecting block 563 and the clamping shell 564 to rotate, the clamping shell 564 drives the special sponge strip 565 and the sampling shell 555 to rotate, and the special sponge strip 565 rotates and contacts the stationary rock core outer wall to clean the rock core outer wall. During the slurry flow process, the special sponge strip 565 located outside the sampling shell 555 is contacted by the slurry, and the special sponge strip 565 can filter impurities in the slurry, so that the water in the slurry can wet the special sponge strip 565 itself. The wetted special sponge strip 565 cleans the rock core outer wall to ensure the integrity and accuracy of the rock core and avoid the influence of the unclean outer wall on the quality of the sample.

[0060] When the rock core sampling is completed, the electric telescopic rod 2 is reversely started to slightly ascend, and the sampling assembly 55 is subjected to its own gravity, so that the sampling shell 555 and the disc 561 gradually move away from each other, indirectly causing the plurality of connecting blocks 563 to drive the clamping shells 564 to move towards the inside of the sampling shell 555, and the plurality of clamping shells 564 drive the special sponge strips 565 to move during the movement to clamp the rock core, effectively preventing the rock core from being broken due to uneven external force or friction. This is crucial to ensure the integrity of the rock core and improve the sampling quality, especially for subsequent analysis of complete rock core samples. At the same time, when the plurality of clamping shells 564 move close to each other, the clamping shells 564 drive the round rod 571 to move, the round rod 571 drives the arc-shaped plate 572 and the arc-shaped cutting member 573 to move, and the arc-shaped cutting member 573 rotates with the cleaning assembly 56 to cut the bottom end of the rock core, thereby facilitating the sampling shell 555 to drive the rock core to ascend.

[0061] Nb-Ta deposit has the characteristics of large scale, multiple genetic types, low ore grade, fine and dispersed dissemination, difficult to identify in the field, associated with rare earth and other metals, difficult to mine, low recovery rate, and less development and utilization. So far, only small and medium scale geological survey and stream sediment survey have been carried out, and the mineral exploration is weak. Large scale geophysical and geochemical exploration is carried out with sporadic mineral exploration, and the scope is limited. The previous stream sediment analysis project lacks rare and rare earth elements, and the overall research degree is low. The prospecting criteria are not systematic, especially for high-grade Nb-Ta ore.

[0062] In some mining areas, Nb-Ta resources are particularly rich, at least five types of contact metasomatic type, alkaline magmatic rock type, alkaline pegmatite type, volcanic rock type and sedimentary type. The device and method provided by the embodiment are mainly aimed at the contact metasomatic type, alkaline magmatic rock type and alkaline pegmatite type Nb-Ta deposit.

[0063] Nb-Ta ore bodies mainly occur in the contact zone between alkaline granite and Triassic metamorphic clastic rocks, with the most developed inner contact zone, universal Nb-Ta mineralization, and sometimes with Nb-Ta mineralization in the outer contact zone. The mineralization range of the inner contact zone is different, which may be related to the occurrence of the contact zone (mineralization occurs in the hanging wall of the contact zone).

[0064] On the basis of systematic collection and comprehensive analysis of existing geophysical and geochemical data in the invention area, taking Nb-Ta as the main target mineral, geological survey, geophysical exploration, geochemical exploration and other exploration methods are used to find, check, verify and trace mineralization clues, and preliminarily delineate favorable metallogenic areas or Nb-Ta ore (mineralized) bodies. Through sparse drilling engineering, a limited number of shallow sampling engineering and testing, preliminary geological characteristics of strata, structures, magmatic rocks and other ore bodies (beds) are determined, as well as the shape, occurrence, scale, quantity, ore composition and quality of the ore body (layer). Nb-Ta prospecting target area is submitted.

[0065] Specifically:

[0066] ①. Based on the existing 1:50,000~1:250,000 regional geology and regional mineral resources data, the distribution, shape, contact relationship and formation age of alkaline rock mass are comprehensively analyzed to delineate the favorable metallogenic area;

[0067] ②. 1:10,000 geological sketch survey is carried out to roughly understand the lithology-lithofacies, contact relationship and fault structure of the strata, magmatic rocks in the exploration area, and the material composition, structural deformation, geometry, kinematics characteristics, as well as the mineralization alteration, occurrence state and enrichment regularity of each rock or each lithological unit. The distribution range of the contact zone between alkaline complex and other types of geological bodies is reasonably divided, and 1:2000 geological sketch survey area is delineated to preliminarily determine the metallogenic geological conditions of the exploration area;

[0068] ③.Using radioactive detection equipment, measure the total amount of gamma rays at different positions in the predicted target area of niobium-tantalum ore, delineate the gamma anomaly area; carry out soil geochemical measurement, trace and delineate the total amount of gamma anomaly area, soil geochemical anomaly area, carry out anomaly sorting, dissection of anomaly; use comprehensive information method for metallogenic prognosis, determine the trenching and drilling position and depth. According to the radioactive characteristics of niobium-tantalum ore and the measurement results, the niobium-tantalum ore body or the favorable area of niobium-tantalum ore mineralization is located.

[0069] ④. According to the determined drilling position and depth, the ore body is controlled, and the mountain engineering control is used to estimate the ore resources.

[0070] Through the device and method provided by the embodiment, the sampling analysis of niobium-tantalum ore can be quickly and efficiently carried out, and the ore body positioning can be quickly carried out, the efficiency of the mining area exploration operation is improved, and the operation cost is reduced.

[0071] It should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0072] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A method for orebody location in niobium-tantalum ore target area prediction and evaluation, characterized in that, Includes the following steps: Step 1: Based on existing geological data, analyze various geological bodies on geological maps at scales of 1:250,000 to 1:10,000 and identify the distribution, morphology, intrusive contact relationships, and formation age of alkaline rock bodies to delineate favorable mineralization areas. Step two: Identify linear structures, toroidal structures, and alteration information using satellite and aerial imagery to assist in target area localization; Step 3: Magnetic exploration is used to detect ore-bearing rock masses and fault structures, delineate potential ore bodies, and infer the geological properties of anomaly sources by combining geological data. Step 4: Using radioactive detection equipment, measure the total gamma at different locations within the niobium-tantalum prediction target area, and make a preliminary judgment on the location of the niobium-tantalum ore based on the gamma anomaly results. Step 5: Based on the analysis in Steps 2, 3 and 4, further select target areas, and then use a rapid sampling device to obtain fresh rock samples from the covered area, analyze the characteristics of the primary halo, determine the degree of ore body erosion and deep extension, distinguish between mineral-induced anomalies and non-mineral-induced anomalies, and determine the prospecting target area. Step 6: Evaluate the metallogenic geological conditions and prospecting prospects, and optimize the exploration network density; The rapid sampling device includes a working frame, an electric telescopic rod fixedly connected to the top of the working frame, square grooves on both sides of the inner wall of the working frame, a sliding shell slidably connected to the inner wall of the square groove, the top of the sliding shell fixedly connected to the movable end of the electric telescopic rod, and a rapid sampling mechanism. The rapid sampling mechanism includes a motor fixedly connected to the top of the sliding shell, a rotating shaft fixedly connected to the output end of the motor, a rotating disk fixedly connected to the bottom of the rotating shaft, the bottom end of the rotating disk penetrating the sliding shell and extending to the outside of the sliding shell, and a grouting pipe connected to one side of the outer wall of the sliding shell. The bottom of the rotating disk is equipped with a sampling component for sampling niobium-tantalum ore. The sampling component includes a circular shell fixedly connected to the bottom of the rotating disk. Four spiral bending plates are fixedly connected to the outer wall of the circular shell to prevent the middle of the circular shell from swinging. An internal threaded sleeve is fixedly connected to the bottom of the circular shell, and an external threaded sleeve is threadedly connected to the outer wall of the internal threaded sleeve. A diamond drill bit is fixedly connected to the bottom of the external threaded sleeve. A cleaning assembly is provided on the inner wall of the circular shell. The cleaning assembly includes a disc fixedly connected to the top of the inner wall of the circular shell, and four rotating plates are rotatably connected to the bottom of the disc. The bottom end of the rotating plate is rotatably connected to a connecting block, and the bottom of the connecting block is fixedly connected to a positioning shell. One end of the positioning shell passes through the sampling shell and extends into the interior of the sampling shell. An irregularly shaped sponge strip is fixedly connected to the inner wall of the positioning shell. Four second strip grooves are opened on the inner wall of the round shell near the first strip groove.

2. A rapid sampling device for niobium-tantalum ore target areas, characterized in that, The device includes a work frame, with an electric telescopic rod fixedly connected to the top of the work frame. Square grooves are provided on both sides of the inner wall of the work frame, and a sliding shell is slidably connected to the inner wall of the square groove. The top of the sliding shell is fixedly connected to the movable end of the electric telescopic rod. The device also includes: A rapid sampling mechanism includes a motor fixedly connected to the top of the sliding shell, a rotating shaft fixedly connected to the output end of the motor, a rotating disk fixedly connected to the bottom of the rotating shaft, the bottom end of the rotating disk penetrating the sliding shell and extending to the outside of the sliding shell, and a grouting pipe connected to one side of the outer wall of the sliding shell. The bottom of the rotating disk is equipped with a sampling component for sampling niobium-tantalum ore. The sampling component includes a circular shell fixedly connected to the bottom of the rotating disk. Four spiral bending plates are fixedly connected to the outer wall of the circular shell to prevent the middle of the circular shell from swinging. An internal threaded sleeve is fixedly connected to the bottom of the circular shell, and an external threaded sleeve is threadedly connected to the outer wall of the internal threaded sleeve. A diamond drill bit is fixedly connected to the bottom of the external threaded sleeve. A cleaning assembly is provided on the inner wall of the circular shell. The cleaning assembly includes a disc fixedly connected to the top of the inner wall of the circular shell, and four rotating plates are rotatably connected to the bottom of the disc. The bottom end of the rotating plate is rotatably connected to a connecting block, and the bottom of the connecting block is fixedly connected to a positioning shell. One end of the positioning shell passes through the sampling shell and extends into the interior of the sampling shell. An irregularly shaped sponge strip is fixedly connected to the inner wall of the positioning shell. Four second strip grooves are opened on the inner wall of the round shell near the first strip groove.

3. The rapid sampling device for niobium-tantalum ore target areas according to claim 2, characterized in that: A fixed bending plate is fixedly connected to one side of the spiral bending plate, the inner wall of the fixed bending plate is fixedly connected to the outer wall of the circular shell, and a fixed rod is fixedly connected to one side of the fixed bending plate.

4. The rapid sampling device for niobium-tantalum ore target areas according to claim 3, characterized in that: The end of the fixed rod away from the fixed bending plate is fixedly connected to the end of another spiral bending plate. The inner wall of the circular shell is provided with four first strip grooves, and the bottom of the inner wall of the first strip groove is slidably connected with a lifting bar.

5. The rapid sampling device for niobium-tantalum ore target areas according to claim 4, characterized in that: A sampling shell is fixedly connected between the four lifting bars, and four circular tubes are respectively connected to the top of the rotating disk. One end of each circular tube passes through the circular shell and extends into the interior of the circular shell.

6. The rapid sampling device for niobium-tantalum ore target areas according to claim 5, characterized in that: The bottom of the locking housing is provided with an auxiliary component, which includes a round rod fixedly connected to the bottom of the locking housing.

7. The rapid sampling device for niobium-tantalum ore target areas according to claim 6, characterized in that: The round rod is disposed outside the sampling shell, and an arc-shaped plate is fixedly connected to the end of the round rod away from the positioning shell. An arc-shaped cutting piece is fixedly connected to one side of the inner wall of the arc-shaped plate.

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