Method for determining extension distance and buried depth of sulfide ore body in coverage area

Abstract

The invention discloses a method for determining extension distance and burial depth of a sulfide ore body in a coverage area based on deep penetration soil gas, which comprises the following steps of: acquiring existing drilling data, determining a surface position A of the sulfide ore body, and acquiring an included angle beta between the extension direction of the sulfide ore body and a vertical drill rod and an inclination direction; soil gas geochemical measurement is conducted in the horizontal projection direction of the ground in the extending direction of the sulfide ore body, and the content of SO2, H2S and CO2 above the sulfide ore body is obtained; after contrast processing is conducted on the content of each gas, gas anomaly profile maps are compiled respectively, and vertical earth surface positions B and C corresponding to the two ends of abnormal extension of the profile maps are divided according to the gas anomaly profile maps; according to the positions A, B and C and the included angle beta, a comprehensive profile map is drawn, and the extension length and the buried depth of the two ends of the sulfide wide body are calculated. According to the method, the sulfide ore body is accurately positioned by measuring the gas abnormal coverage area.

Description

Technical Field

[0001] The invention relates to the field of geological exploration, and in particular to a method for determining the extension distance and burial depth of a sulfide ore body in a covered area based on deep-penetrating soil gas. Background Art

[0002] With the improvement of exploration accuracy and technology, the number of easily identifiable sulfide deposits on the surface has gradually decreased. The prospecting and exploration work faces huge challenges and is moving towards the exploration of hidden minerals in deep and unknown areas. However, the physical property information of deep geological bodies is not direct mineralization information, and it is usually difficult to make a qualitative judgment on the mineralization of deep sulfide ore bodies.

[0003] At present, the methods for determining the extension distance and burial depth of sulfide ore bodies in the coverage area are mainly based on drilling methods, geological methods and geochemical methods. Drilling mainly involves drilling a drill rod tens to thousands of meters underground to extract cores for inspection, and then determine the burial depth of the ore body. However, the cost of drilling verification is too high. Deep drilling of thousands of meters requires an investment of millions. Therefore, it is difficult to directly use drilling methods to determine the extension distance and burial depth of sulfide ore bodies without other evidence. Geological methods mainly determine the extension direction of ore bodies by analyzing ore-controlling structures and mineralization laws. However, geological methods such as geological mapping methods are basically ineffective in coverage areas. The surface coverage area is mainly composed of sediments transported from other places, and there is no information on the original site. Therefore, it is difficult to determine the occurrence of deep buried ore bodies. Traditional geochemical methods cannot obtain sampling media in coverage areas, so they cannot locate the location of ore bodies of metal sources. Traditional geochemical methods obtain the location of deep ore bodies by obtaining metal element anomalies through chemical analysis of surface samples, but metal elements have strong horizontal migration on the surface and cannot directly indicate the extension and burial depth of deep ore bodies.

[0004] Therefore, it is urgent to develop a new and efficient mineral exploration method for the extension distance and burial depth of sulfide ore bodies in the covered area, so as to quickly achieve breakthroughs in mineral exploration in the covered area. Summary of the invention

[0005] The main purpose of the present invention is to provide a method for efficiently finding the extension distance and burial depth of a sulfide ore body.

[0006] The technical solution adopted by the present invention is:

[0007] A method for determining the extension distance and burial depth of a sulfide ore body in a covered area based on deep penetrating soil gas is provided, comprising the following steps:

[0008] Obtain existing drilling data, determine the surface position A of the sulfide ore body, and obtain the angle β and inclination direction between the extension direction of the sulfide ore body and the vertical drill pipe;

[0009] Soil gas geochemical measurements are carried out along the horizontal projection direction of the sulfide ore body to obtain the contents of SO2, H2S and CO2 gases above the sulfide ore body;

[0010] After contrast processing of the content of each gas, gas anomaly profiles are compiled respectively, and the vertical surface positions B and C corresponding to the two ends of the anomaly extension of the profile are divided according to the gas anomaly profiles;

[0011] According to positions A, B, C and the angle β, a comprehensive profile is drawn to complete the calculation of the extended length and burial depth of the two ends of the wide sulfide body. The extended length on both sides of the sulfide ore body is L = (lb + lc) / sin β, the burial depth of position B is H1 = h-lb / tan β + h1, and the burial depth of position C is H2 = h + lc / tan β + h2; among them, the drilling depth of the ore is h; the horizontal distance between position A and position B is lb, and the vertical distance is h1; the horizontal distance between position A and position C is lc, and the vertical distance is h2.

[0012] According to the above technical solution, if the sulfide ore body is a vein-like ore body with a small thickness, the measurement point distance setting range is 15m-20m; and if it is a rock tube-like ore body with a large thickness, the measurement point line distance setting range is 200m-400m and the point distance setting range is 40m-80m.

[0013] Following the above technical solution, a portable multi-component gas rapid analyzer is specifically used to obtain the contents of SO2, H2S and CO2 gases above the sulfide ore body.

[0014] Following the above technical solution, a handheld GPS is used to navigate and locate each measuring point, and the point line number, coordinates and elevation are recorded.

[0015] Following the above technical solution, the starting point and end point of the measurement are marked and the point line numbers are indicated, and marks are made on the drill pipe every other section.

[0016] Following the above technical solution, when conducting soil gas geochemical measurements, first drill a hole, then connect the sampler, extract the gas through the air pump, and the gas enters the portable multi-component gas analyzer through the sampler. Record the maximum value of the analyzer as the corresponding measurement value.

[0017] Following the above technical solution, when conducting soil gas geochemical measurements, relevant information is recorded simultaneously, including sampling depth, loose sediment characteristics, vegetation conditions, weather conditions and temperature.

[0018] Following the above technical solution, after contrast processing, mineralization-related anomalies are highlighted in high background areas, and weak anomalies are enhanced in low background areas.

[0019] According to the above technical solution, the sulfide ore body is a magmatic hydrothermal ore body or a porphyry metal ore body.

[0020] According to the above technical solution, the sulfide ore body is a polymetallic ore body of tectonic hydrothermal type, metamorphic hydrothermal type, and composite hydrothermal type.

[0021] Following the above technical solution, the contrast processing is specifically as follows: the average value of all data of each gas in the mining area is used as the contrast value, the contrast value is subtracted from each measured value, and the abnormal point is analyzed based on the difference.

[0022] The beneficial effects of the present invention are as follows: the present invention is based on soil gas geochemical measurement and drilling, and collects gas data above the ore body through soil gas geochemical measurement, combines the drilling data to obtain the extension direction and angle parameters of the ore body, and combines mathematical methods to ultimately achieve accurate prediction of the burial depth of the ore body. It can be seen that the method of the present invention for accurately judging the extension distance and burial depth of the two ends of the sulfide ore body in the coverage area has achieved a theoretical and practical breakthrough in the precise positioning of the ore body in the coverage area, making up for the vacancy of traditional prospecting methods in this regard, and can better calculate the economic value of the ore deposit. It is an economical and efficient new method for ore body exploration.

[0023] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 is a flow chart of a method for determining the extension distance and burial depth of a sulfide ore body in a covered area based on deep-penetrating soil gas according to an embodiment of the present invention;

[0026] Figure 2 Schematic diagram of gas geochemical measurement profile of skarn body according to an embodiment of the present invention;

[0027] Figure 3 It is a schematic diagram of the location and burial depth prediction of a certain sulfide ore body according to an embodiment of the present invention. DETAILED DESCRIPTION

[0028] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0029] It should be noted that the illustrations provided in the embodiments of the present invention are only used to illustrate the basic concept of the present invention in a schematic manner. Therefore, the drawings only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout type may also be more complicated.

[0030] Most metal deposits exist mainly in the form of sulfides, such as porphyry-skarn copper, molybdenum, gold deposits and medium-high temperature magmatic hydrothermal deposits of tungsten, tin, copper, rare elements, etc., and tectonic hydrothermal, metamorphic hydrothermal, composite hydrothermal, copper, lead, zinc, gold, iron, scattered elements and other polymetallic deposits. These sulfides can form gases such as SO2, H2S and CO2 during their formation or later oxidation. Since these gases have strong penetrability and can migrate over a distance of more than a kilometer, obvious SO2, H2S and CO2 gas anomalies are formed above the ore body. These continuously generated gases can migrate upward and be bounded by the soil cover layer, eventually forming obvious gas geochemical anomaly zones above both ends of the ore body. The present invention can determine the boundary of the ore body by measuring the deep-penetrating gas anomaly, and calculate the extension length and burial depth of the ore body by mathematical methods in combination with the location and occurrence of the existing ore body, so as to achieve the accurate positioning prediction of the sulfide ore body in the coverage area, and create a precedent for combining geological exploration results with gas geochemical methods to locate the location of sulfide ore bodies. This method integrates the geological basic results with the deep-penetrating gas geochemical anomaly results and transforms them into practical new results for locking sulfide ore bodies, providing a basis for prospecting in new and old mines. And the low cost, quick effect, green and environmental protection, high precision and strong applicability of this method are the application basis of this method.

[0031] like Figure 1 , 2 As shown, the method for determining the extension distance and burial depth of a sulfide ore body in a covered area based on deep penetrating soil gas in an embodiment of the present invention comprises the following steps:

[0032] S1. Obtain existing drilling data, determine the surface position A of the sulfide ore body, and obtain the angle β and the inclination direction between the extension direction of the sulfide ore body and the vertical drill pipe;

[0033] S2. Conduct soil gas geochemical measurements along the horizontal projection direction of the sulfide ore body to obtain the contents of SO2, H2S and CO2 gases above the sulfide ore body;

[0034] S3. After contrast processing of each element content, gas anomaly profiles are compiled respectively, and vertical surface positions B and C corresponding to the two ends of the anomaly extension of the profile are divided according to the gas anomaly profiles;

[0035] S4. Draw a comprehensive profile based on positions A, B, C and the angle β, and complete the inference of the extended length and burial depth of the two ends of the wide sulfide body. The extended length on both sides of the sulfide ore body is L = (lb + lc) / sin β, the burial depth of position B is H1 = h-lb / tan β + h1, and the burial depth of position C is H2 = h + lc / tan β + h2; among them, the drilling depth of the ore is h; the horizontal distance between position A and position B is lb, and the vertical distance is h1; the horizontal distance between position A and position C is lc, and the vertical distance is h2.

[0036] In step S2, the contents of gases such as SO2, H2S and CO2 can be obtained by active gas extraction in the field through a portable multi-component gas rapid analyzer (PMGRA). It only takes 5-10 days to complete the gas geochemical measurement of one square kilometer, and real-time analysis results can be obtained, which is unmatched by other methods. The operation process is also very simple, and general technicians can complete the experiment. It has important guiding and promotion significance for the rapid evaluation of the prospecting potential, target area screening, and exploration engineering deployment outside the existing ore deposit. In addition, the present invention combines drilling engineering and applies mathematical methods to greatly save work costs, improve prospecting efficiency, and overcome the high risk problem of drilling methods, the complexity of geological and geochemical methods, and the multi-solution and inefficiency problems of geophysical exploration.

[0037] In step S3, the contrast processing is specifically as follows: the average value of all data of each gas in the mining area is used as the contrast value, the contrast value is subtracted from each measurement value, and the abnormal point position is analyzed according to the difference value. For example, whether the measuring point is an abnormal measuring point is determined according to the preset difference threshold, and finally the end point position of the ore body extending to both ends is determined according to the starting position of all abnormal points (mainly the measuring points with higher corresponding gas content).

[0038] Specifically, another embodiment of the present invention has the same principle as the above embodiment, but provides a more specific and practical method, which is as follows:

[0039] Step 1: Based on various field geological feature surveys and existing geological data, comprehensively analyze the key information of mineralization, select abnormal areas with further work value for sulfide deposits, and combine geochemical exploration, geophysical exploration and other methods to determine the most likely location of the ore body. Combine the mineralization geological body, mineralization structure and mineralization structural surface characteristics, mineralization alteration halo, mineralization model and ore type to determine the type of deposit. If it is a sulfide deposit, this method can be used to carry out ore body location prediction.

[0040] Step 2: Based on the previous data or existing drilling data, determine the location A of the sulfide ore body and obtain the angle β and inclination direction between the ore body and the vertical drill pipe, such as Figure 2 shown.

[0041] Step 3: Carry out soil gas geochemical measurement in the horizontal projection direction of the ground along the extension direction of the ore body. For the deposit types with smaller ore body thickness, such as the hydrothermal vein type and skarn type with vein-like output, the point spacing is set to about 15-20m; and for the deposit types with larger ore body thickness, such as the porphyry type with rock tube-like output, the line spacing is set to about 200-400m, and the point spacing is set to about 40-80m. Use a portable multi-component gas rapid analyzer to obtain the content of SO2, H2S, and CO2 gases above the sulfide ore body.

[0042] Specifically, in step 3, the theoretical coordinates of all measuring points are recorded, and then the handheld GPS is used to navigate and locate each measuring point, and the point line number, coordinates and elevation are recorded. Then, the starting point and the end point are marked with stakes and the point line number is indicated. Every section is marked with a spray-painted bamboo pole or stake. Each sampling point is punched with a steel chisel with a diameter of about 2 cm, and the hole depth is 70-100 cm. After the steel chisel is pulled out, the spiral sampler is quickly screwed in until it is completely immersed in the covering layer. During this period, the sealing and smoothness of the sampler need to be ensured. After the instrument is started and calibrated, it is quickly connected to the sampler. After the gas is extracted by the air pump, it passes through the 6 small holes at the bottom of the sampler, the connected silicone hose, the three-way valve, the filter and the drying tube, etc., and enters the portable multi-component gas analyzer. The pumping speed is 1L / min, and the readings of SO2, H2S, and CO2 on the display screen will gradually increase. After reaching the highest value, the reading will gradually decrease. The total measurement time is generally 30-45s. The maximum value automatically marked by the instrument needs to be read and recorded on site as the measurement value of the point. At the same time, the sampling depth, loose sediment characteristics, vegetation conditions, weather conditions, temperature and other conditions should also be recorded in detail during the gas measurement process to facilitate the later summary of rules. Traditional gas analysis methods mainly collect gas passively, separate gas collection (field) and test analysis (laboratory), that is, gas collection and test analysis are completed in two steps. It is inevitable that the amount of gas collected, contamination and escape will occur, affecting the test efficiency and accuracy. The portable multi-component gas rapid analyzer (PMGRA) developed by this method carries an active suction device, which realizes the integration of gas collection-analysis-statistics at the field construction site, thereby improving the test accuracy and efficiency.

[0043] Step 4: Perform contrast processing on the content of each element obtained from the gas geochemical measurement, and then compile gas anomaly H2S, SO2, and CO2 profiles respectively. Useful gas anomalies are affected by factors such as terrain. They can be eliminated by sliding average filtering, median filtering, plane distance weighted sliding average filtering, plane distance weighted median filtering, elevation weighted sliding average filtering, elevation weighted median filtering, plane distance derivative transformation, elevation distance derivative transformation, background subtraction operation and other methods to eliminate the influence of factors such as terrain, structure and cover thickness. Mineralization-related anomalies can be highlighted in high backgrounds, and weak anomalies can be enhanced in low background areas. According to the final anomaly map, the positions B and C where the profile anomalies extend can be divided (such as Figure 2 shown).

[0044] Step 5: Based on the positions A, B, C and ∠β obtained above, draw a comprehensive profile to complete the inference of the extended length and burial depth of the two ends of the sulfide wide body.

[0045] Specifically, as shown in the example figure: the drilling depth of the ore is h, the horizontal distance between the drilling position A and the boundary B is lb, and the vertical distance is h1. The horizontal distance between the drilling position A and the boundary C is lc, and the vertical distance is h2.

[0046] Then the extension length on both sides of the ore body is L = (lb + lc) / sinβ;

[0047] The burial depth of end B of the ore body boundary is H1 = h-lb / tanβ+h1;

[0048] The burial depth of end C of the ore body boundary is H2=h+lc / tanβ+h2.

[0049] Through the above calculations, key information can be provided for sulfide ore body exploration, which has strong guiding value for sulfide ore body exploration.

[0050] The method of the present invention is based on soil gas geochemical measurement and drilling to accurately judge the extension distance and burial depth of the two ends of the sulfide ore body in the coverage area, which achieves a theoretical breakthrough in the accurate positioning of the ore body in the coverage area, and fills the gap in the traditional mineral prospecting method in this aspect. Through soil gas geochemical measurement, gas data is collected above the ore body, and the extension direction and angle parameters of the ore body are obtained by combining the drilling data, and combined with mathematical methods, the accurate prediction of the burial depth of the ore body is finally achieved, and the economic value of the ore deposit is better calculated. This is an economical and efficient new method for ore body exploration.

[0051] The present invention also provides a third embodiment, which is the application of the above method in a certain sulfide lead-zinc deposit. Specifically, it includes the following steps:

[0052] (1) Select a skarn lead-zinc deposit and conduct drilling on the mineralization discovered in the previous work. During the drilling verification, record the following information in detail:

[0053]

[0054] (2) Points were set up every 40 meters along the 183° strike, and a portable multi-component gas rapid analyzer was used to obtain geogas information data above the deep skarn ore body.

[0055] (3) The test data was exported, and the average value of all data of each gas in the mining area was used as the background value. The abnormal point was calculated by subtracting the background value (Table 1).

[0056] Table 1 Abnormal soil gas data above the No. 3 ore body of a skarn lead-zinc mine (background value: CO2: 1278; H2S: 0.63; SO2: 1.13)

[0057] Serial number <![CDATA[CO2]]> Abnormal data <![CDATA[H2S]]> Abnormal data <![CDATA[SO2]]> Abnormal data 1 1325 47 0.14 -0.49 0.80 -0.33 2 1402 124 0.38 -0.25 1.38 0.25 3 1523 245 0.24 -0.39 1.14 0.01 4 1596 318 0.32 -0.31 1.56 0.43 5 4683 3405 1.24 0.61 3.46 2.33 6 5788 4510 1.76 1.13 4.85 3.72 7 4469 3191 2.56 1.93 6.33 5.2 8 2665 1387 0.76 0.13 3.60 2.47 9 3794 2516 2.18 1.55 4.47 3.34 10 2894 1616 1.81 1.18 2.92 1.79 11 2865 1587 1.68 1.05 4.28 3.15 12 3095 1817 1.80 1.17 2.60 1.47 13 2548 1270 1.19 0.56 2.57 1.44 14 1874 596 1.66 1.03 3.09 1.96 15 2345 1067 1.86 1.23 2.13 1 16 5987 4709 1.15 0.52 3.00 1.87 17 6774 5496 2.45 1.82 4.85 3.72 18 6884 5606 3.27 2.64 6.47 5.34 19 4467 3189 3.15 2.52 4.79 3.66 20 4673 3395 2.87 2.24 4.77 3.64 21 3976 2698 2.44 1.81 3.68 2.55 22 2378 1100 0.81 0.18 1.36 0.23 23 1556 278 0.35 -0.28 1.01 -0.12 24 1335 57 0.27 -0.36 0.51 -0.62 25 1223 -55 0.17 -0.46 0.68 -0.45

[0058] (4) Plot the obtained data and find the two ends of the obvious anomaly, such as Figure 3 As shown, 1 and 2 are confirmed to be the abnormal boundaries of sulfide ore body No. 3, and the boundary points H1 and H2 are 178 and 282, respectively. The distances from borehole ZK003 are 384m and 212m, and the comprehensive calculation shows that the buried depth of the ore body at point 1 is: 175-120+146+384 / tan78=282.6m; the buried depth of the ore body at point 2 is: 282-120+146-212 / tan78=263m.

[0059] Subsequently, corresponding drill holes were drilled at points 1 and 2, and ore bodies were discovered, verifying the reliability of the calculation.

[0060] In summary, the method of the present invention overcomes the international problem that sulfide ore bodies cannot be accurately located in covered areas, and establishes a new method and workflow suitable for the extension distance and burial depth of sulfide ore bodies in covered areas; traditional prospecting methods are basically ineffective in covered areas, while hydrogen sulfide and sulfur dioxide in this method are direct indicative gases or markers of sulfide ore bodies, which can detect depths of more than 1000m, and are direct reactions of ore-forming materials, overcoming the problems of multiple solutions and uncertainty in the prospecting process of traditional methods; and this method is an economical, green and efficient new prospecting method suitable for sulfide deposits, which can play a huge role not only in prospecting in new areas but also in prospecting in new and old mines.

[0061] The order of execution of each step in the above embodiment does not mean the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application.

[0062] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the appended claims of the present invention.

Claims

1. A method for determining the extension distance and burial depth of sulfide ore bodies in a covered area based on deep penetrating soil gas, characterized in that: The following steps are involved: Obtain existing drilling data, determine the surface position A of the sulfide ore body, and obtain the angle β and inclination direction between the extension direction of the sulfide ore body and the vertical drill pipe; Soil gas geochemical measurements are carried out along the horizontal projection direction of the sulfide ore body to obtain the contents of SO2, H2S and CO2 gases above the sulfide ore body; After contrast processing of the content of each gas, gas anomaly profiles are compiled respectively, and the vertical surface positions B and C corresponding to the two ends of the anomaly extension of the profile are divided according to the gas anomaly profiles; According to positions A, B, C and the angle β, a comprehensive profile is drawn to complete the calculation of the extended length and burial depth of the two ends of the wide sulfide body. The extended length on both sides of the sulfide ore body is L = (lb + lc) / sin β, the burial depth of position B is H1 = h-lb / tan β + h1, and the burial depth of position C is H2 = h + lc / tan β + h2; among them, the drilling depth of the ore is h; the horizontal distance between position A and position B is lb, and the vertical distance is h1; the horizontal distance between position A and position C is lc, and the vertical distance is h2.

2. The method for determining the extension distance and burial depth of sulfide ore bodies in the coverage area based on deep penetrating soil gas according to claim 1, characterized in that: If the sulfide ore body is a vein-like ore body with a small thickness, the measurement point distance setting range is 15m-20m; if it is a rock pipe-like ore body with a large thickness, the measurement point line distance setting range is 200m-400m and the point distance setting range is 40m-80m.

3. The method for determining the extension distance and burial depth of sulfide ore bodies in the coverage area based on deep penetrating soil gas according to claim 1, characterized in that: Specifically, a portable multi-component gas rapid analyzer is used to obtain the content of SO2, H2S, and CO2 gases above the sulfide ore body.

4. The method for determining the extension distance and burial depth of sulfide ore bodies in the coverage area based on deep penetrating soil gas according to claim 1, characterized in that: Specifically, use handheld GPS to navigate and locate each measuring point, and record the point line number, coordinates and elevation.

5. The method for determining the extension distance and burial depth of sulfide ore bodies in the coverage area based on deep penetrating soil gas according to claim 1, characterized in that: Mark the starting point and end point of the measurement and indicate the point and line numbers, and mark the drill pipe every other section.

6. The method for determining the extension distance and burial depth of sulfide ore bodies in the coverage area based on deep penetrating soil gas according to claim 1, characterized in that: When conducting soil gas geochemical measurements, first drill a hole, then connect the sampler, extract the gas through an air pump, and the gas enters the portable multi-component gas analyzer through the sampler. Record the maximum value of the analyzer as the corresponding measurement value.

7. The method for determining the extension distance and burial depth of sulfide ore bodies in the covered area based on deep penetrating soil gas according to claim 1, characterized in that: While making soil gas geochemical measurements, relevant information is recorded simultaneously, including sampling depth, unconsolidated sediment characteristics, vegetation conditions, weather conditions and temperature.

8. The method for determining the extension distance and burial depth of sulfide ore bodies in the coverage area based on deep penetrating soil gas according to claim 1, characterized in that: After contrast processing, mineralization-related anomalies are highlighted in high background areas, and weak anomalies are enhanced in low background areas.

9. The method for determining the extension distance and burial depth of sulfide ore bodies in a covered area based on deep penetrating soil gas according to any one of claims 1 to 8, characterized in that: The sulfide ore body is a magmatic hydrothermal ore body or a porphyry metal ore body, or a polymetallic ore body of tectonic hydrothermal, metamorphic hydrothermal, or composite hydrothermal type.

10. The method for determining the extension distance and burial depth of sulfide ore bodies in a covered area based on deep penetrating soil gas according to any one of claims 1 to 8, characterized in that: The specific contrast processing is as follows: the average value of all data of each gas in the mining area is used as the contrast value, the contrast value is subtracted from each measured value, and the abnormal points are analyzed based on the difference.

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