Quantification and evaluation method for exploration drilling mine finding information

Abstract

The invention provides an exploration drilling mine finding information quantification and evaluation method, and relates to the technical field of geological exploration. Comprising the following steps: (1) collecting exploration engineering data and constructing a drilling database; (2) projecting drilling coordinate points into a map; (3) constructing a grading database of the basic sample grading sections; (4) determining a meter hundred section / thickness rate grading division index; (5) drill hole mineralization comparison; (6) constructing a point control area; and (7) drawing a plane distribution diagram of each level of hundred sections per meter / thickness rate. According to the method, mineralization characteristics and the overall geological condition can be comprehensively and objectively reflected; the defect that the mineralization intensity is too one-sided in the existing work is avoided; the mineralization condition of the exploration project can be accurately expressed objectively and comprehensively, understanding is easy, communication is convenient, and wide applicability and standardization are achieved; objectively described ore deposit geological information and engineering control degree evaluation are combined, and industrial applications such as exploration and mining are facilitated.

Description

Technical Field

[0001] The present invention provides a method for quantifying and evaluating ore - seeing information in exploration boreholes, which relates to the technical field of geological exploration. Background Art

[0002] The formation of ore deposits is usually affected by the combined action of many ore - controlling factors, so their occurrences show a high degree of complexity. How to objectively express complex ore - deposit geological information and accurately extract mineralization characteristics, so as to guide the exploration, development and comprehensive utilization of mineral resources, is an important content that the geological community and the industrial community have long been concerned about.

[0003] Patent CN114814982B provides a method for predicting favorable ore - forming positions of uranium deposits in granite bodies. After interpreting remote - sensing image data of the exploration area, information such as geophysical structure and geological structure is obtained, and a three - dimensional geological model of the working area is constructed based on this. After identifying the granite body and its boundary buffer zone in the three - dimensional geological model, the contact zone of the rock body is delineated, and finally the ore - forming position is predicted. This technology has the following disadvantages:

[0004] (1) This scheme can locate and depth - predict the favorable ore - forming positions of uranium deposits in granite bodies in three - dimensional space, but there are inevitably errors and it is not precise enough.

[0005] (2) It is impossible to measure the mineralization degree of the ore body.

[0006] (3) It is impossible to analyze the spatial characteristics of the mineralization intensity of a certain drilling project.

[0007] Although significant progress has been made in the three - dimensional modeling technology of ore deposits, two - dimensional maps are still the most intuitive way to present the appearance of ore deposits and are also the main guiding tools used in the front - line exploration and development work. Compared with exploring ore - deposit geological information and evaluating the ore - seeing situation of projects from aspects such as remote sensing, petrology, structural geometry, geophysics and chemistry, drilling exploration information is the most direct, comprehensive and objective means in geological exploration work.

[0008] Existing methods interpret the ore - seeing situation of projects by establishing a drilling database and using the horizontal projection of the project. For example, CN114329301A provides a method for batch - calculating the horizontal projection of ore - seeing cut - through points in uranium - ore drill holes. After establishing a drilling database and calling the drilling inclination records and ore - seeing parameters, the coordinates of the ore - seeing cut - through points of the drill holes are calculated, and finally they are projected and output according to the coordinate points. This technology has the following disadvantages:

[0009] (1) Due to the limitation that the projection points of exploration projects on the plane are discretely distributed, this technology can only express two situations of ore - seeing and non - ore - seeing in engineering drill holes, and cannot accurately depict the specific ore - seeing situation of each drill hole, such as how the mineralization is graded, whether the mineralization is uniform, and what the apparent thickness of the ore body is, etc.

[0010] (2) Each drilling project is an isolated entity. Through horizontal projection, only the distribution of drill holes can be reflected, but they cannot be connected, and the overall situation of the ore body and the degree of mineralization cannot be expressed, let alone meet the work needs of geological workers. How to utilize this discrete exploration engineering information to accurately and objectively depict the characteristics of the ore deposit on a specific plane and express the mineralization information has become an urgent problem to be solved currently.

[0011] CN114266179B provides a method and device for processing and analyzing drilling information of ore deposits based on finite elements, which mentions the idea of ore deposit grade division. Processing the drilling information of ore deposits according to the mineralization classification can achieve information visualization. This technology has the following disadvantages: This method is not sufficient to support the comparison of the changing trends of mineralization characteristics between drill holes with different footage, and lacks a systematic grade division method to depict the planar characteristics of ore body mineralization. Summary of the Invention

[0012] The development purpose of the present invention is to establish a method for expressing the spatial mineralization characteristics of natural mineralized sections based on exploration engineering to evaluate the ore - seeing situation of the project. The results of this method can objectively depict the mineralization effect reflected by the geological exploration information of the ore deposit with discrete sampling as much as possible. In the exploration stage of mineral resources, the resulting maps can indicate the metallogenic potential and exploration direction of the ore deposit; while in the exploration stage of the ore deposit, the resulting maps can provide ideas for the design of mining plans.

[0013] Through this solution, the following problems are intended to be solved:

[0014] (1) Construct a systematic mineralization classification scheme, which can not only solve the problem of only one - sidedly expounding the mineralization intensity in existing work, but also avoid the drawback of the ratio of elemental mineralization grade to mineralization apparent thickness being too absolute;

[0015] (2) Affected by the terrain, the opening positions of drill holes are different. According to the exploration situation, the footage of drill holes is different, resulting in different elevation ranges of the underground space exposed by each drill hole. Therefore, it is difficult to compare. The meter - percentage classification technology involved in this solution helps the drill hole projects with different footage to be expressed and compared on a two - dimensional plane, and can show the mineralization characteristics and changing trends;

[0016] (3) The technology of this solution is convenient for indicating the activity center of ore - forming processes in the enriched parts of the ore body, providing research ideas for geological scholars and workers.

[0017] The specific technical solution is as follows:

[0018] A method for quantifying and evaluating the ore - seeing information of exploration drill holes, comprising the following steps:

[0019] (1) Collection of exploration engineering data and construction of a drill hole database:

[0020] Collect exploration projects such as boreholes within the working area, and organize the geospatial information of the projects, including the opening location and total footage (depth); comprehensively organize the geological information obtained from exploration projects, including the observation / sampling location, lithology, mineralization grade, and analysis sample data, to form an exploration project borehole database (DBS: Database - space). The exploration project borehole database includes engineering geospatial information, construction parameter information, and geological information. The basic structure of the engineering borehole database DBS is as follows:

[0021]

[0022] Among them, X n , Y n , Dept n are respectively the X - axis coordinate, Y - axis coordinate, and total footage of project n; Dep n1 is the footage where the observation / sampling point n1 is located, and Cu n1 etc. are geological information such as copper grade, and so on for points n1, n2 to nm.

[0023] (2) Projection mapping of borehole coordinate points:

[0024] Project the borehole coordinate points of the exploration deposit onto a plane, conduct spatial analysis on each borehole point one by one with a radius of 200 meters, and draw two - dimensional maps. This projection plane is called the engineering projection plane. After traversing all exploration projects, a connected and closed polygon, that is, the projection map of the borehole center points, is finally formed.

[0025] (3) Construction of the base - fraction sample - level - segment classification database:

[0026] Based on the base - fraction whole - sample mineralization classification results, taking exploration projects as the basic unit, merge the basic analysis whole - samples according to the principles of the same mineralization grade and spatial adjacency into a natural mineralization segment, including the A - grade mineralization segment, B - grade mineralization segment, and C - grade mineralization segment of the single - level mineralization segment, and the X + - grade mineralization segment, A + - grade mineralization segment, B + - grade mineralization segment of the upper - capacity - level mineralization segment. In addition, it also includes the W - grade intercalated rock segment. Based on the exploration industrial standards of the main exploited ore type, copper ore, merge them into natural mineralization segments of different levels, and divide different segment - thickness classes according to the apparent thickness of each level of ore segment.

[0027] Finally, form the base - fraction sample - level - segment classification database (DBH: Database - hiberarchy), and the basic element structure of its database is as follows:

[0028] DBH = {X k , Y k , Dept k , Hk , α k , β k …}

[0029] Among them, X k , Y k is the spatial coordinate of drilling point k, Dept k is the total footage, H k is the drilling stage classification result, α k , β k etc. are the corresponding geological information.

[0030] (4) Determination of the index for grading and dividing the meter section / thickness ratio:

[0031] In the basic sample level segment classification database, the segment thickness class and the length of the mine are counted based on the segment level to obtain the segment frequency and segment cumulative thickness. According to the formulas of meter-per-hundred segment rate and meter-per-hundred thickness rate, the meter-per-hundred segment rate and meter-per-hundred thickness rate corresponding to different segment levels of each drill hole are obtained. Finally, according to the classification standards of meter-per-hundred segment rate and meter-per-hundred thickness rate, the two are classified and divided, so as to investigate the complexity of mineralization of each exploration project, comprehensively compare the different situations of natural mineralization sections of each exploration project, and obtain the distribution characteristics of mineralization plane.

[0032] (5) Drilling mineralization comparison;

[0033] (6) Construction of point control areas;

[0034] A borehole element is a unit in space that is centered on the drilling point of the exploration project and has a radius of r, and is composed of a closed curve / broken line. On a two-dimensional map, a borehole element is represented as a two-dimensional block centered on the engineering drilling point. The point control area is formed by the intersection and expansion of each borehole element. The basic steps for constructing a point control area are as follows:

[0035] (6.1) Based on the drilling point, the initial point control area / drilling element is expanded outward with a radius of half the exploration project spacing (r = 200m), forming a perfect circular area with the engineering drilling point as the center.

[0036] (6.2) Perform spatial analysis on all initial point control areas within a certain level of exploration engineering spacing (2r). If the distance between two points (d-distance) is less than the exploration engineering spacing of this level (d < 2r), then there must be two intersection points based on the connecting line between the two points.

[0037] (6.3) Search for a distance of r outward from the engineering drilling point, and the search direction must completely cover 360°. If there is another intersection line generated by the connection line referring to this engineering drilling point in this direction, then use this intersection line as the boundary of the point control area. If there are multiple eligible intersection lines, use the intersection line closest to the engineering drilling point as the boundary of the point control area. If there is no eligible intersection line, use the connection line as the boundary of the point control area. The area enclosed by these boundaries is the scope of the point control area.

[0038] (6.4) According to the grading database of the base sampling level section, assign the meter-percentage / thickness rate data corresponding to this engineering drilling point to the entire point control area.

[0039] (6.5) Color the point control area according to the meter-percentage / thickness rate data of different levels.

[0040] (7) Draw the plane distribution maps of the meter-percentage / thickness rate at each level;

[0041] After the construction of the point control area is completed, make the distribution maps of the meter-percentage / thickness rate of different mineralization levels, including the plane distribution map of the single-level meter-percentage rate, the plane distribution map of the upper-capacity level meter-percentage rate, the plane distribution map of the single-level meter-thickness rate, and the plane distribution map of the upper-capacity level meter-thickness rate.

[0042] The present invention is a method system based on exploration engineering to quantify the ore-seeing situation of this project and reflect the spatial variation characteristics of natural mineralized sections. Compared with the existing solutions, this solution can (1) avoid the defect that it is difficult to compare due to the uneven footage of each project affected by terrain, divide each project into independent and interrelated units on the two-dimensional plane, and can comprehensively and objectively reflect the mineralization characteristics and the overall geological situation; (2) establish a systematic mineralization grading scheme to avoid the drawback of too one-sided description of mineralization intensity in the existing work; (3) use two-dimensional drawings as the direct carrier, can objectively and comprehensively express the mineralization situation of exploration engineering accurately, is easy to understand and convenient for communication, and has wide applicability and standardization; (4) The ore body enrichment part indicates the activity center of mineralization, combines the objectively described deposit geological information and the evaluation of engineering control degree, and facilitates industrial applications such as exploration and mining. Brief Description of the Drawings

[0043] Figure 1 is the flow chart of the present invention;

[0044] Figure 2 is the schematic diagram of the x-level mineralized section of a certain drilling hole in the embodiment;

[0045] Figure 3 is the engineering space analysis and drilling point B in the embodiment + schematic diagram of the construction of the upper-capacity level section distribution;

[0046] Figure 4 is the drilling hole No. 1 B in the embodiment+ Variation diagram of the percentage of hundred-meter segments and the thickness rate of hundred-meter segments of rice;

[0047] Figure 5 For borehole No. 2B of the embodiment + Variation diagram of the percentage of hundred-meter segments and the thickness rate of hundred-meter segments of rice;

[0048] Figure 6 For borehole No. 3B of the embodiment + Variation diagram of the percentage of hundred-meter segments and the thickness rate of hundred-meter segments of rice;

[0049] Figure 7 For borehole No. 4B of the embodiment + Variation diagram of the percentage of hundred-meter segments and the thickness rate of hundred-meter segments of rice;

[0050] Figure 8 For boreholes No. 1 and 4B of the embodiment + Comparison diagram of grades;

[0051] Figure 9 For boreholes No. 2 and 3B of the embodiment + Comparison diagram of grades. Specific implementation manner

[0052] The specific technical solution of the present invention will be described in combination with the embodiments.

[0053] A method for quantifying and evaluating the ore-seeing information of exploration boreholes, as Figure 1 shown, includes the following steps:

[0054] (1) Collection of exploration engineering data and construction of borehole database:

[0055] Fully collect exploration engineering such as boreholes within the working area, and sort out the geospatial information of the engineering, including but not limited to the opening position, total footage (depth), etc. Comprehensively sort out the geological information obtained from the exploration engineering, including but not limited to the observation / sampling position, lithology, mineralization grade, analysis sample data, etc., to form an exploration engineering borehole database (DBS: Database - space). The exploration engineering borehole database includes engineering geospatial information, construction parameter information, and geological information. Taking a certain ore section of a copper metal deposit in a certain place in China as an example, comprehensively sort out the exploration engineering data of this deposit, collect the exploration data of 324 boreholes, and construct an engineering borehole database DBS based on this. Its basic structure is as follows:

[0056]

[0057] Among them, X n , Y n , Dept n are respectively the X - axis coordinate, Y - axis coordinate, and total footage of engineering n; Dep n1 is the footage where the observation / sampling point n1 is located, Cun1 Such as copper grade and other geological information, and so on from points n1, n2 to nm.

[0058] (2) Projection mapping of borehole coordinate points:

[0059] Project the 324 borehole coordinate points of the explored deposit onto a plane, conduct spatial analysis on each borehole point one by one with a radius of 200 meters, and draw two-dimensional maps. This projection plane is called the engineering projection plane. After traversing all exploration projects, finally form a connected and closed polygon, that is, the projection map of the borehole center points.

[0060] (3) Construction of the base sample grade section classification database:

[0061] Based on the base sample whole ore mineralization classification results, taking exploration projects as the basic units, merge the basic analysis whole samples according to the principles of the same mineralization grade and spatial adjacency into a natural mineralization section. As shown in Figure 1 , it includes the A-grade mineralization section, B-grade mineralization section, and C-grade mineralization section of the single-level ore section, and the X + -grade mineralization section, A + -grade mineralization section, B + -grade mineralization section of the upper-level ore section. In addition, it also includes the W-grade intercalated rock section. Based on the exploration industrial standards of the main exploited ore type, copper ore, merge them into natural mineralization sections of different levels, as shown in Table 1. According to the apparent thickness conditions of each ore section, divide different section thickness grade classes (taking the minimum mining thickness Hm = 4m of the copper ore type in the explored deposit as an example, as shown in Table 2 and Figure 3 .

[0062] Finally, form the base sample grade section classification database (DBH: Database-hiberarchy), and its basic element structure of the database is as follows:

[0063] DBH = {X k , Y k , Dept k , H k , α k , β k …}

[0064] Among them, X k , Y k are the spatial coordinates of borehole point k, Dept k is the total footage, H k is the borehole section classification result, and α k , β k etc. are the corresponding geological information.

[0065] Table 1

[0066]

[0067] Table 2

[0068]

[0069] (4) Determination of the classification criteria for the rice - hundred - segment / thickness ratio:

[0070] In the classification database of the basic sample - level segments, taking the segment level as the benchmark, the segment - thickness classes and the mine managers are respectively counted to obtain the segment frequency and the cumulative segment thickness. According to the formulas for the rice - hundred - segment rate and the rice - hundred - thickness rate, the rice - hundred - segment rates and the rice - hundred - thickness rates corresponding to different segment levels of each borehole are obtained. Finally, according to the classification criteria for the rice - hundred - segment rate and the rice - hundred - thickness rate, as shown in Table 3 and Table 4, the two are classified and divided, so as to investigate the mineralization complexity of each exploration project, comprehensively compare the different situations of the natural mineralized segments of each exploration project, and obtain the planar distribution characteristics of mineralization.

[0071] Table 3

[0072]

[0073]

[0074] Table 4

[0075]

[0076] (5) Comparison of borehole mineralization:

[0077] From the sample borehole data, it can be obtained that:

[0078] The changing trends of the rice - hundred - segment rate and the rice - hundred - thickness rate of Borehole No. 1 in the upper, middle, and lower segments are shown in the figure, as Figure 4 . The rice - hundred - segment rate and the rice - hundred - thickness rate respectively show a downward and an upward trend in the borehole, indicating that the mineralization in the upper part of the ore segment is more dispersed and the mineralization degree is not as good as that in the lower part. Therefore, Borehole No. 1 still has the potential for further exploration.

[0079] The changing trends of the rice - hundred - segment rate and the rice - hundred - thickness rate of Borehole No. 2 in the upper, middle, and lower segments are shown in the figure, as Figure 5 . The rice - hundred - segment rate and the rice - hundred - thickness rate respectively show a trend of first decreasing and then increasing and first increasing and then decreasing in the borehole, indicating that the mineralization in the lower part of the borehole is more dispersed and the mineralization degree is not as good as that in the upper part. Therefore, it is not very meaningful to continue exploring deeper in Borehole No. 2.

[0080] The changing trends of the rice - hundred - segment rate and the rice - hundred - thickness rate of Borehole No. 3 in the upper, middle, and lower segments are shown in the figure, as Figure 6。The percentage of mibai and the thickness rate of mibai show an upward trend and a trend of first decreasing and then increasing respectively in the drill hole, indicating that the middle and lower parts of the ore section are more fragmented and the mineralization is dispersed. The mineralization degree in the upper part is better than that in the lower part. However, due to the upward trend of the thickness rate of mibai in the lower part, it shows that there is still potential for further exploration in Drill Hole 3.

[0081] The changing trends of the percentage of mibai and the thickness rate of mibai in the upper, middle, and lower sections of Drill Hole 4 are shown in the figure, as Figure 7 。Both the percentage of mibai and the thickness rate of mibai show an upward trend in the drill hole, indicating that there is no mineralization in the upper part of the ore section. Although the mineralization in the lower part is dispersed, the mineralization degree is better. Therefore, there is still potential for further exploration in Drill Hole 4.

[0082] Table 5

[0083]

[0084] Table 6

[0085]

[0086] For the two drill holes numbered 1 and 4, as Figure 8 , the cumulative thickness of the B + -level mineralized section in Drill Hole 1 is 250.13 meters, and the cumulative thickness of the B + -level mineralized section in Drill Hole 4 is 251.67 meters. The thicknesses of the B + -level mineralized sections of the two are approximately equal; the footage of Drill Hole 1 is 501.26 meters, and the footage of Drill Hole 4 is 1193.01 meters. Obviously, the footage of Drill Hole 1 is much smaller than that of Drill Hole 4; according to the formula for the thickness rate of mibai , the thickness rate of mibai in Drill Hole 1 is 49.9 meters per 100 meters, and the thickness rate of mibai in Drill Hole 4 is 21.1 meters per 100 meters. Obviously, the thickness rate of mibai in Drill Hole 1 is greater than that in Drill Hole 4. Therefore, compared with Drill Hole 4, the mineralization in Drill Hole 1 is better. It can be obtained that when the thickness of the mineralized section in the drill hole project is the same, the thickness rate of mibai decreases with the increase of the footage, and the mineralization intensity also decreases accordingly.

[0087] For the two drill holes numbered 2 and 3, as Figure 9 , the cumulative thickness of the B + -level mineralized section in Drill Hole 2 is 1008.11 meters, and the cumulative thickness of the B + -level mineralized section in Drill Hole 3 is 1010.41 meters. The thicknesses of the B + -level mineralized sections of the two are approximately equal; the footage of Drill Hole 2 is 1241.14 meters, and the footage of Drill Hole 3 is 1238.11 meters. The engineering footages of the two can be regarded as approximately equal; the thickness rate of mibai in Drill Hole 2 is 81.2 meters per 100 meters, and the thickness rate of mibai in Drill Hole 3 The B of the two boreholes is 81.6 m / 100 m. + The thickness ratio of each grade is also approximately the same. + The frequency of the mineralized section is 15 sections, and the B + The frequency of the mineralized section is 51, and the B + The frequency of the mineralized section is less than that of the B in No. 3 drilling hole. + The frequency of the mineralization section is given by the formula of meter-per-hundred section rate. The meter-per-hundred-section rate of borehole No. 2 is obtained. The rate of 100-meter sections in borehole No. 3 is 1.2 sections / 100 meters. The value is 4.1 sections / 100 meters. Obviously, the B + The grade per meter is less than that of No. 3 borehole B + Therefore, compared with No. 3 borehole, No. 2 borehole has better mineralization. It can be concluded that when the thickness of the mineralized section and the footage of the drilling project are the same, the per-hundred-meter thickness ratio is also the same. At this time, the per-hundred-meter ratio increases with the increase of the mineralized section frequency, and the mineralization degree of the drilling project is inversely proportional to it. The higher the per-hundred-meter ratio, the more dispersed the engineering mineralization, and the lower the mineralization degree.

[0088] (6) Construction of point control areas;

[0089] A borehole element is a unit in space that is centered on the drilling point of the exploration project and has a radius of r, and is composed of a closed curve / broken line. On a two-dimensional map, a borehole element is represented as a two-dimensional block centered on the engineering drilling point. The point control area is formed by the intersection and expansion of each borehole element. The basic steps for constructing a point control area are as follows:

[0090] ① Based on the drilling point, expand outward with a radius of half the exploration project spacing (r = 200m) to form an initial point control area / drilling element, that is, a perfect circle area centered on the engineering drilling point.

[0091] ② Perform spatial analysis on all initial point control areas within a certain level of exploration engineering spacing (2r). If the distance between two points (d-distance) is less than the exploration engineering spacing of this level (d < 2r), then there must be two intersection points based on the connecting line between the two points.

[0092] ③ Search the distance r from the engineering drilling point outward, and the search direction must fully cover 360°. If there is another intersection line generated by the connecting line of the engineering drilling point in this direction, the intersection line is used as the boundary of the point control area. If there are multiple intersection lines that meet the conditions, the intersection line closest to the engineering drilling point is used as the boundary of the point control area. If there is no intersection line that meets the conditions, the connecting line is used as the boundary of the point control area. The area enclosed by each boundary is the scope of the point control area.

[0093] ④ According to the basic sampling grade and grading database, the meter-per-hundred-section / thickness ratio data corresponding to the drilling point of the project is assigned to the entire point control area.

[0094] ⑤ Color the point control area according to the data of the meter-percentage / thickness rate at different levels.

[0095] (7) Draw the plane distribution maps of the meter-percentage / thickness rate at each level;

[0096] After the construction of the point control area, draw the distribution maps of the meter-percentage / thickness rate at different mineralization levels, including the plane distribution map of the meter-percentage rate of a single level, the plane distribution map of the meter-percentage rate of the upper-level, the plane distribution map of the meter-thickness rate of a single level, and the plane distribution map of the meter-thickness rate of the upper-level.

Claims

1. A method for quantifying and evaluating ore information from prospecting drilling holes, characterized in that: The following steps are involved: (1) Collection of exploration engineering data and construction of drilling database: Collect drilling exploration projects within the working area and organize the geospatial information of the projects, including the location of the drilling holes and the total footage; comprehensively organize the geological information obtained from the exploration projects, including the observation / sampling location, lithology, mineralization grade, and analysis sample data to form the exploration project drilling database DBS; (2) Projection of drilling coordinate points into a graph: Project the coordinate points of the drilling holes in the exploration deposit onto a plane, conduct spatial analysis on the drilling points one by one with a radius of 200 meters, and draw a two-dimensional map. This projection plane is called the engineering projection plane. After traversing all the exploration projects, a connected closed polygon is finally formed, which is the projection map of the drilling center point. (3) Construction of base sample segmentation and classification database: Based on the mineralization classification results of the basic analysis samples, with the exploration project as the basic unit, the basic analysis samples are merged into a natural mineralization section according to the principle of the same mineralization grade and spatial proximity, including the A-level mineralization section, B-level mineralization section, and C-level mineralization section of the single-level mineral section, and the X-level mineralization section of the upper-level mineral section. + Grade A mineralized section + Grade B mineralization section + Grade 1 mineralized section, in addition to Grade W intercalated stone section; based on the exploration industry standard of copper ore, which is the main mineral species, it is grouped into natural mineralized sections of different grades, and divided into different thickness grades according to the apparent thickness of each grade of ore section; Finally, a base sample segment classification database DBH is formed; (4) Determination of the index for grading and dividing the meter section / thickness ratio: In the basic sample level segment classification database, with the segment level as the benchmark, the segment thickness class and the ore length are counted to obtain the segment frequency and segment cumulative thickness; according to the formula of meter-per-hundred segment rate and meter-per-hundred thickness rate, the meter-per-hundred segment rate and meter-per-hundred thickness rate corresponding to different segment levels of each drill hole are obtained, and finally, according to the classification standards of meter-per-hundred segment rate and meter-per-hundred thickness rate, the two are classified and divided, so as to investigate the complexity of mineralization of each exploration project, comprehensively compare the different situations of natural mineralization sections of each exploration project, and obtain the plane distribution characteristics of mineralization; (5) Drilling mineralization comparison; (6) Construction of point control areas; (7) Drawing of the plane distribution map of each level of meter section / thickness ratio; After the point control area is constructed, meter-per-hundred-section / thickness rate distribution maps of different mineralization levels are made, including single-level meter-per-hundred-section rate plane distribution map, upper-capacity level meter-per-hundred-section rate plane distribution map, single-level meter-per-hundred-thickness rate plane distribution map, and upper-capacity level meter-per-hundred-thickness rate plane distribution map.

2. A method for quantifying and evaluating ore-seeking information in exploration drilling holes according to claim 1, characterized in that: The exploration engineering borehole database in step (1) includes engineering geospatial information, construction parameter information and geological information; the exploration engineering borehole database DBS has the following basic structure: Among them, X n ,Y n ,Dept n They are respectively the X-axis coordinate, Y-axis coordinate, and total footage of project n; Dep n1 is the footage of observation / sampling point n1, Cu n1 It is the geological information of copper grade, from n1, n2 to nm points and so on.

3. A method for quantifying and evaluating ore-seeking information in exploration drilling holes according to claim 1, characterized in that: The basic element structure of the base sampling level classification database DBH in step (3) is as follows: DBH={X k ,Y k ,Dept. k ,H k ,a k ,b k …} Among them, X k , Y k is the spatial coordinate of drilling point k, Dept k is the total footage, H k is the drilling stage classification result, α k , β k The corresponding geological information.

4. A method for quantifying and evaluating ore-seeking information in exploration drilling holes according to claim 1, characterized in that: In step (6), the borehole element is a unit consisting of a closed curve / broken line with the exploration engineering drilling point as the center and r as the radius in space; on the two-dimensional map, the borehole element is expressed as a two-dimensional block with the engineering drilling point as the center; the point control area is formed by the intersection and expansion of each borehole element; The basic steps for constructing a point control area are as follows: (6.1) Based on the drilling point, expand outward with a radius r of half the exploration project spacing to form an initial point control area / drilling element, that is, a perfect circular area centered on the engineering drilling point; (6.2) Perform spatial analysis on all initial point control areas within a certain level of exploration project spacing 2r; if the spacing d between two points is less than the spacing of the exploration project at that level, that is, d < 2r, then there must be two intersection points based on the connecting line between the two points; (6.3) Search the distance r from the engineering drilling point outward, and the search direction must fully cover 360°; if there is another intersection line generated by the connecting line of the engineering drilling point in this direction, then the intersection line is used as the boundary of the point control area; if there are multiple intersection lines that meet the conditions, the intersection line closest to the engineering drilling point is used as the boundary of the point control area; if there is no intersection line that meets the conditions, then the connecting line is used as the boundary of the point control area; the area enclosed by all boundaries is the scope of the point control area; (6.4) According to the basic sampling and grading database, the meter-per-hundred-meter section / thickness ratio data corresponding to the drilling point of the project is assigned to the entire point control area; (6.5) Assign colors to the point control areas according to different levels of meter section / thickness rate data.

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