CN117649258A - Deep hidden sediment type phosphorite prospecting prediction model - Google Patents
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- 239000002367 phosphate rock Substances 0.000 title claims abstract description 138
- OJMIONKXNSYLSR-UHFFFAOYSA-N phosphorous acid Chemical compound OP(O)O OJMIONKXNSYLSR-UHFFFAOYSA-N 0.000 title claims description 81
- 239000013049 sediment Substances 0.000 title claims description 8
- 229910019142 PO4 Inorganic materials 0.000 claims abstract description 32
- 239000010452 phosphate Substances 0.000 claims abstract description 32
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims abstract description 30
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 17
- 239000011707 mineral Substances 0.000 claims abstract description 17
- 238000004364 calculation method Methods 0.000 claims abstract description 7
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 37
- 239000011574 phosphorus Substances 0.000 claims description 37
- 229910052698 phosphorus Inorganic materials 0.000 claims description 37
- 238000000034 method Methods 0.000 claims description 23
- 238000005065 mining Methods 0.000 claims description 15
- 241000209140 Triticum Species 0.000 claims description 10
- 235000021307 Triticum Nutrition 0.000 claims description 10
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- 238000010276 construction Methods 0.000 claims description 2
- 238000012935 Averaging Methods 0.000 claims 1
- 238000011835 investigation Methods 0.000 abstract description 16
- 239000002699 waste material Substances 0.000 abstract description 5
- 125000002467 phosphate group Chemical group [H]OP(=O)(O[H])O[*] 0.000 abstract description 2
- 229910052585 phosphate mineral Inorganic materials 0.000 abstract 1
- 230000008021 deposition Effects 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 5
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
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- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 208000010445 Chilblains Diseases 0.000 description 2
- 101100007326 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) COS10 gene Proteins 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
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- 244000117499 Colubrina elliptica Species 0.000 description 1
- 101100075837 Drosophila melanogaster Mabi gene Proteins 0.000 description 1
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- 230000033558 biomineral tissue development Effects 0.000 description 1
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Abstract
The invention relates to the technical field of mineral exploration, in particular to a deep hidden sedimentary phosphate rock prospecting prediction model, which comprises the steps of firstly determining whether a hidden phosphate mineral layer exists in the underground deep part according to stratum sequence; and then researching the thickness of the phosphate layer of the phosphate region around the planned working area, calculating the average thickness, and counting the stratum tendency and the dip angle of the surface exposure of the planned working area to simulate the development space of the blind phosphate layer. And (3) counting stratum dip angles, wherein the result of estimating the volume of the phosphate rock layer, the product of the volume and the phosphate rock density by a calculation method is the predicted potential resource quantity of the phosphate rock. According to the predicted potential resource quantity of the phosphate rock, the scale of the phosphate rock bed of the planned working area is predicted by comparing with the scale division standard of the mineral resource reserve, and according to the current market quotation, the prospecting potential and the economic value are analyzed to scientifically evaluate whether the planned working area has the value for further developing the investigation work or not. Therefore, the ore finding risk can be predicted in advance, the fund waste is avoided, and a scientific basis is provided for investment decision.
Description
Technical Field
The invention belongs to the technical field of mineral exploration, and particularly relates to a deep hidden sedimentary phosphate ore prospecting prediction model.
Background
With the depth of mineral exploration, shallow sedimentary phosphate ore beds near the surface are almost completely explored, and the rest is basically sedimentary phosphate ore beds with deep and hidden positions. The hidden sediment type phosphorite is characterized in that no phosphate layer is exposed on the surface of the planned working area, the burial depth of the phosphate layer is generally greater than 50m, the phosphate layer is formed by sediment causes and is distributed in a layered mode, and the phosphate layer is produced in a specific horizon. Geologists often learn deep blind phosphate deposits more unfamiliar, and are so-called happy with each other, which causes greater difficulty in finding ores. In order to avoid the situation that a deep phosphate ore layer does not exist, the mining risk is reduced, the fund waste is avoided, and the establishment of a deep hidden sediment type phosphate ore mining prediction model is particularly important.
The sedimentary phosphorite in a certain area is produced in a system wheat terrace group stratum under a chilblain system, the lithology of the rock is dark gray-gray black thin-thick lamellar sand (gravel) chip phosphorite, compact block phosphorite, stripes and strip phosphorite, and the stratum containing phosphorite is widely distributed in Sichuan Emei-Ma Bian-Rate-Jinyang zone, and the distribution is stable. The shallow phosphorite beds are almost completely surveyed, and the deep blind phosphorite beds are left. Since the phosphorus ore body is buried deeply in the ground, it is invisible to the naked eye, and the uncertainty of the mineral content is very large. In many cases in the past, deep blind phosphate deposits are often not dared to make a fixed investment decision to search for ores. This is because the accurate knowledge of the deep hidden sedimentary phosphate rock formation rule is lacking, and the scientific and effective prospecting prediction model is lacking for the deep hidden sedimentary phosphate rock. Therefore, aiming at sedimentary phosphate ores, it is important to form an efficient and scientific prospecting prediction model. According to the quick news of Chinese geological survey results, the article of 27 th period of 2018, namely, the ultra-large phosphorite is found by the cold and armed systems in the sheep farm area of the Realgar county in Yunnan province, AMT electromagnetic sounding profile measurement is deployed in the sheep farm mining area of the Zhenxiong county in Yunnan province, 2 drilling holes are deployed according to the inversion result of the AMT electromagnetic sounding profile, and thick and large blind phosphorite is found in the deep part. The method is effective in exploration of the blind phosphorite, but has the defects of high cost and multiple resolvability of an AMT electromagnetic sounding profile inversion result, and whether an uncertainty exists in a deep blind phosphorite deposit or not. According to geological and exploration 57 and 4-period article 4 New discovery of sheep farm ultra-large phosphorite deposition environment and resource potential analysis in Yunnan Zhenxiong region, the existence of a hidden phosphorite deposit is predicted by analyzing and predicting the deposition environment (namely the lithology paleogeographic) of a quasi-working area if the deposition environment is favorable for the enrichment of the deposition phosphorite into ores. However, the phosphorite in the land-level regions in Yunnan is all blind phosphorite, the single factor of the sedimentary environment is utilized, the existence of the blind phosphorite deposit is directly predicted without utilizing the ground surface of the peripheral mining area and the layer of phosphorite layer at the deep part (without predicting the thickness of the blind phosphorite layer), and the investment investigation risk is larger by utilizing the prediction result. In addition, the ninth national ore-forming theory and prospecting method academic discussion paper abstract sets 'Innovative of the phosphorite-rich ore-forming theory and great breakthrough of prospecting of the prospecting area of Guizhou's China 'one text utilizes the same method (rock phase ancient geographic/sedimentary environmental analysis method) as in the Zhenxig area of Yunnan, so that the prospecting breakthrough of the prospecting area of Guizhou's can be realized, and the defects of single prediction factor and larger risk of the prediction result are also present.
In summary, the problems of the prior art are: in the past, the deep hidden sedimentary phosphate ore has a lack of accurate knowledge on the ore formation rule, and the deep hidden sedimentary phosphate ore has a lack of scientific and effective ore finding prediction models. The real reason is that the statistical analysis of the thickness data of the phosphorite layer around the planned working area (deep blind phosphorite distribution area) is lacking, if the industrially-mined phosphorite layer exists around the planned working area, the deposition environment (lithology and ancient geography) of the planned working area is favorable for the enrichment of phosphorus into ore, and the stratum sequence of the planned working area is not analyzed and recognized, so that before decision, whether the blind phosphorite layer exists in the deep part or not and the thickness of the blind phosphorite layer cannot be determined clearly. The lack of a scientific and effective prospecting prediction model brings the following problems: whether investment is used for investigation cannot make scientific decisions; if not predicted, the actual investigation result shows that the size of the phosphorite bed in the planned working area is small or the phosphorite resource is not available, which causes the waste of funds and time.
The key means for solving the technical problems is to analyze the regional ore formation geological background and determine the existence of a hidden phosphorus ore layer in the deep underground part according to the stratum sequence; counting the thickness of a phosphate rock layer of a phosphate rock region around the quasi-working region, calculating the average thickness of the phosphate rock layer, counting the stratum tendency and dip angle of the surface exposure of the quasi-working region, and analyzing the spreading space of the phosphate rock layer of the quasi-working region; calculating the potential resource quantity of the phosphate rock by adopting the product of the volume and the density of the phosphate rock; according to the calculated potential resource quantity of the phosphate rock, determining which type of large, medium and small mineral resources the mineral deposit belongs to by contrasting the scale division standard of the mineral resource reserves, and providing scientific basis for investment decision.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a deep hidden sediment type phosphorite prospecting prediction model. The method analyzes regional ore formation geological background by knowing the geological data of the region of the planned working region, and determines whether a hidden phosphorus ore layer exists in the deep underground part according to stratum sequence. And (3) researching the thickness of the phosphate layer of the phosphate region around the planned working area, calculating the average thickness, counting the stratum tendency and the dip angle of the surface exposure of the planned working area, and researching the stratum spreading space of the phosphate rock. And (3) counting the stratum inclination angle, and calculating and estimating the volume of the phosphate rock layer, wherein the product of the volume and the phosphate rock density is the predicted potential resource quantity of the phosphate rock. According to the predicted potential resource quantity of the phosphate rock, the scale of the phosphate rock bed of the planned working area is predicted by comparing with the scale division standard of the mineral resource reserves, and according to the current market quotation, the potential and economic value of prospecting are analyzed to make scientific evaluation on whether the planned working area is worth developing further investigation work. The method can solve the problems of the prior art means, so that the ore finding risk can be predicted in advance, the fund waste is avoided, and a scientific basis is provided for investment decision.
The aim of the invention is realized by the following technical scheme: a deep hidden sediment type phosphorite prospecting prediction model is characterized in that a hidden phosphorite layer is determined to exist in the deep underground part by analyzing stratum sequence, the thickness and average thickness data of the phosphorite layer in surrounding phosphorite areas are counted, stratum dip angles are counted, the volume of the phosphorite layer is calculated by utilizing a volume calculation formula, and the product of the volume and the phosphorite density is the predicted potential resource quantity of the phosphorite. So that scientific evaluation can be made as to whether the planned work area can develop further investigation work.
The method specifically comprises the following steps:
s1, determining that a hidden phosphorus ore layer exists in the deep underground part according to stratum sequence;
the specific method comprises the following steps: if one or more than one of the bamboo temple group, the cang wave paving group and the stone dragon hole group is found on the earth surface of the simulated working area, judging that a hidden phosphorus ore layer exists in the deep underground part, otherwise, the hidden phosphorus ore layer does not exist;
the stratum formed by deposition is spread according to the sequence from old to new (from bottom to top), the target stratum for the phosphorite is a phosphorus-containing stratum wheat terrace group (namely, a phosphorus ore layer is in the wheat terrace group stratum), because the stratum is formed by deposition according to a fixed sequence, and then the stratum is deposited to form a wheat terrace group, a bamboo temple group, a sea wave paving group, a Dan Longdong group, a steep temple group, a Siwang temple group, a rochanter gate group and the like in sequence, and the strata are spread in a lap tile shape according to a certain inclination angle. If one or more than 3 layers of the key bamboo temple group, the cang wave paving group and the stone dragon hole group are found on the surface of the simulated working area, the existence of the wheat terrace group in the deep underground part, namely the existence of hidden sedimentary phosphorite, can be determined.
The stratum sequence refers to stratum formed by deposition, and the stratum is spread layer by layer according to the sequence from old to new (from bottom to top).
S2, calculating the thickness of the phosphate rock layer and the stratum dip angle of the pseudo-working area;
the specific method comprises the following steps: using the average value of at least 5 phosphorus layer thickness data of phosphorus mining area with the surrounding distance of 1km or less to replace the phosphorus mining layer thickness of the planned working area, the phosphorus mining layer average thickness is recorded as H Average of The method comprises the steps of carrying out a first treatment on the surface of the Counting the exposed dip angle of the surface of the quasi-working area, replacing the dip angle of the phosphate layer of the quasi-working area, and recording the stratum dip angle of the phosphate layer as alpha; for the areas with different inclination angles, carrying out regional calculationThe sum of the volume of the phosphorite layers in each area is the volume of the phosphorite layer of the whole working area; the phosphorus ore layer spreading space of the planned working area can be analyzed.
Wherein, the stratum trend refers to: the intersection line of the inclined plane (namely a geological interface) and the horizontal plane is called a trend line, the line perpendicular to the trend line on the stratum inclined plane is called an inclined line, and the positive (vertical) projection of the inclined line on the horizontal plane is inclined along the inclined direction pointed by the lower part of the inclined plane; the stratum dip angle refers to: the angle between the inclined line on the inclined plane and its forward projection line on the horizontal plane. Based on the basic principle of sedimentary stratigraphy, the stratum tendency and the dip angle of the exposed surface are basically consistent with those of the deep blind phosphate rock, and the spreading space state of the deep blind phosphate rock can be described by knowing the stratum tendency and the dip angle of the surface.
S3, predicting potential resource quantity of the phosphate rock in the working area; the result of the product of volume and phosphate ore density is a predicted potential resource amount for phosphate ore.
The prediction is performed according to the following formula: v=s Flat plate /COSα×H Average of M=v×ρ; wherein V is the volume of the phosphorite layer, S Flat plate In order to measure the projected plane area of the phosphorite layer of the pseudo working area by using MAPGIS software, alpha is the dip angle of the stratum (phosphorite layer), COS alpha is the cosine function value of the dip angle alpha, S Flat plate COS alpha is the area of the phosphorite layer inclined plane (i.e. the true area), H Average of Is the average thickness of the phosphorite layer, wherein M is the potential resource quantity of phosphorite, and ρ is the density of phosphorite.
S4, drawing a phosphorite potential resource quantity prediction estimation graph, wherein the concrete method comprises the following steps of: and (3) taking the geological map as a base map, distributing the data of the flat area, the inclination angle and the average thickness of the phosphorite layer on the base map, and putting the calculation result of the potential resource quantity on the map.
Further, the step S1 further includes: knowing the geological data of the region of the planned working area, and analyzing the mining geological background of the region; the regional geological data includes one or more of earth formation locations, strata, formations, magma, mineral data.
Further, after predicting the potential resource amount of the phosphate rock in the working area or obtaining a prediction model, the skilled person can predict the phosphate rock bed scale of the working area according to the predicted potential resource amount of the phosphate rock, the scale division standard of the mineral resource reserve, analyze the prospecting potential and the economic value according to the current market quotation, and make scientific evaluation on whether the working area is worth developing further investigation work.
The method comprises the following steps: compared with the current latest standard of scale division of mineral resources reserves (DZT 0400-2022), the method has the advantages that the rock phosphate resource quantity is more than or equal to 5000 ten thousand tons, the rock phosphate resource quantity is more than or equal to 500 ten thousand tons and less than 5000 ten thousand tons, the rock phosphate resource quantity is less than 500 ten thousand tons, the rock phosphate resource quantity is medium-sized and small-sized, if the predicted rock phosphate potential resource quantity is in the medium-sized and above-sized mineral deposit, the potential of the rock phosphate in the quasi-working area can be basically determined to be larger, the method has better economic value, the further investigation work can be worth, if the predicted rock phosphate potential resource quantity is in the small-sized mineral deposit, the potential of the rock phosphate in the quasi-working area can be determined to be small, the economic value is poor, and the further investigation work is not recommended.
The beneficial effects of the invention are as follows: according to the invention, by analyzing stratum sequence, determining that a hidden phosphorus ore layer exists in the deep underground part, counting the thickness and average thickness data of the phosphorus ore layer in the surrounding phosphorus ore area, counting stratum inclination angle, calculating the volume of the phosphorus ore layer by utilizing a volume calculation formula, wherein the product of the volume and the density of the phosphorus ore is the predicted potential resource quantity of the phosphorus ore, so that scientific evaluation can be made on whether further investigation work can be carried out in the planned work area. By applying the method in Ma Bian Yi nationality county yellow house apron phosphorite general survey projects in Sichuan Leshan, the Huang Guping phosphorite area is subjected to prospecting prediction model construction before decision making and investment investigation, 3.5 hundred million tons of detectable phosphorite is predicted, an ultra-large phosphorite bed can be found by prediction, and 3.7 hundred million tons of actual detectable phosphorite are reached by 2023, so that the predicted detectable phosphorite resource amount target is achieved. Therefore, by utilizing the method, scientific decisions are made on whether the Huang Guping phosphorite general investigation project deserves investment investigation, the prospecting risk is predicted, and the fund waste is avoided.
Drawings
FIG. 1 is a flow chart illustrating the operation of the method for predicting prospecting according to the present invention;
FIG. 2 is a geological sketch of a phosphate rock region of Huangjia lawn in Ma-Bian county;
FIG. 3 is a histogram of stratum sequence of phosphate rock region of Huangjia at Ma-Bian county
FIG. 4 is a cross-sectional view of a predicted spatial morphology of a phosphorus ore layer spread in a yellow apron mining area in Ma-Bian county;
FIG. 5 is a predicted estimation chart of the potential resource amount of phosphate ore in the mining area of Huangjia province in Ma-bian county;
fig. 6 is a graph showing the result of verifying the amount of phosphate ore resources in the mining area of Huanghua at Mabi county.
Detailed Description
The technical solution of the present invention will be described in further detail with reference to the accompanying drawings, but the scope of the present invention is not limited to the following description.
1. Mineral background
Phosphorite in the area of the MABIANXIAN county in Leshan City is produced in the wheat terrace group (middle part of the wheat terrace group) of the lower system of the chilblain. The ore lithology is dark gray-gray black phosphate rock containing gravel and sand scraps, dark gray-gray black striped phosphate rock and gray black compact phosphate rock. The phosphate layer is produced in a layered manner. According to the research, the stratum formed by the deposition of the Huang Guping phosphorite area is spread according to the sequence from old to new (from bottom to top), the target layer for investigation is a phosphorus-containing stratum wheat terrace group, and the stratum exposed in the mining area is sequentially from old to new: the qiongqiong temple group, the canang temple group, the Dan Longdong group, the clique temple group, the West temple group, the royale temple group and the like.
2. Detailed description of the preferred embodiments
1) Knowing Huang Guping phosphorite zone area geological data, analyzing area mineralization geological background, and sequentially: the method comprises the steps of (1) a qianqianzhu temple group, a cang wave paving group, a Dan Longdong group, a clique temple group, a West temple group, a roqueen temple group and other strata, wherein a phosphorus-containing stratum wheat terrace group is arranged below the qianzhu temple group, a qianzhu temple group and a Dan Longdong group are found in the exposed stratum in a mining area, and a hidden phosphorus ore layer is determined to exist in the deep underground part according to the stratum sequence;
2) The thickness data of the first ore block of Ha Luoluo ore segments of 4 projects (WTC 2.83 m, WTC 3.71 m, ZK 24-4.92 m, ZK 26-4.12.50 m, ZK 28-4.18 m) and the thickness data of the second ore block of Ha Luoluo ore segments of 3 projects (TC 358 9.27m, ZK 01.07 m and ZK 29-1.11.68 m) are counted, the projects are separated from the Huang Guping region by 70-1000 m, the average thickness of the phosphorus ore layer is calculated by using the 7 thickness data, the average thickness of the phosphorus ore layer of the surrounding phosphorus ore region represents the average thickness of the phosphorus ore layer of the Huang Guping phosphorus ore region, and the calculated result shows that the average thickness of the phosphorus ore layer can reach 11.52m; and then counting the exposed dip angle of the surface of the phosphorite area of the yellow house and calculating an average dip angle (7 representative dip angle values are selected from 16 degrees, 11 degrees, 7 degrees, 6 degrees, 12 degrees and 12 degrees, and average 10 degrees), wherein the exposed dip angle of the surface of the phosphorite layer is basically consistent with the dip angle of the deep blind phosphorite layer based on the basic principle of sedimentary stratigraphy, so that the phosphorite layer spreading space of the phosphorite area Huang Guping can be analyzed.
3) Using the volumetric calculation formula (v=s Flat plate /COSα×H Average of ) The product of the volume of the phosphorite layer, the volume (V) and the phosphorite Dan Midu (rho) is calculated to obtain the predicted potential resource quantity of the phosphorite, and a phosphorite potential resource quantity prediction estimation chart is manufactured on the basis of the predicted potential resource quantity of the phosphorite, so that a phosphorite area prospecting prediction model of the yellow house is established. The calculation process comprises the following steps: the phosphorite is taken as a layered ore body for prediction, and is divided into 2 block sections, the number of the 1 st block section is inferred to be-1, and the projected plane area of the phosphorite layer (S Flat plate ) 7036015m 2 Tilt angle (α) 10 °, average thickness 11.52m, volume (V) = 7036015m 2 /COS10°×11.52m=82305295.17m 3 According to the past test results, the density (ρ) of the phosphate rock was known to be 2.80t/m 3 Then deducing the potential resource quantity (D 1 ）=V×ρ=82305295.17m 3 ×2.80t/m 3 10000= 23045.5 ten thousand tons; the number of the 2 nd block is inferred-2, the projected plane area of the phosphorite layer (S Flat plate ) 3758555m 2 Tilt angle (α) 10 °, average thickness 11.52m, volume (V) = 3758555m 2 /COS10°×11.52m=43966503.58m 3 According to the past test results, the density (ρ) of the phosphate rock was known to be 2.80t/m 3 Deducing potential resource of-1 block segment phosphate ore（D 2 ）=V×ρ=43966503.58m 3 ×2.80t/m 3 10000= 12310.6 kilotons, 2 blocks of potential resources of phosphorus ore (D) =d 1 +D 2 = 23045.5 ten thousand tons+ 12310.6 ten thousand tons= 35356.1 ten thousand tons. Through prediction, 3.5 hundred million tons of phosphate ore can be detected, and an ultra-large phosphate ore deposit can be found through prediction.
4) According to the predicted potential resource quantity of the phosphate rock, the scale of the phosphate rock bed of the planned working area is predicted by comparing with the scale division standard of the mineral resource reserves, and according to the current market quotation, the potential and economic value of prospecting are analyzed to make scientific evaluation on whether the planned working area is worth developing further investigation work. By 7 months of 2023, the general investigation of the first stage is completed, and the Huang Guping phosphate rock area actually detects 3.7 hundred million tons of phosphate rock, so that the predicted detectable phosphate rock resource amount target is reached.
The foregoing is merely a preferred embodiment of the invention, and it is to be understood that the invention is not limited to the form disclosed herein but is not to be construed as excluding other embodiments, but is capable of numerous other combinations, modifications and environments and is capable of modifications within the scope of the inventive concept, either as taught or as a matter of routine skill or knowledge in the relevant art. And that modifications and variations which do not depart from the spirit and scope of the invention are intended to be within the scope of the appended claims.
Claims (2)
1. The deep hidden sediment type phosphorite prospecting prediction model is characterized in that the construction method of the prediction model comprises the following steps:
s1, determining whether a hidden phosphorus ore layer exists in the deep underground part;
the specific method comprises the following steps: if one or more than one of a music mosque group, a cang wave paving group and a stone dragon hole group on the surface of the phosphorus-containing stratum wheat terrace group is found on the surface of the planned working area, judging that a hidden phosphorus ore layer exists in the deep underground part, otherwise, the hidden phosphorus ore layer does not exist;
s2, calculating the thickness of the phosphate rock layer and the stratum dip angle of the pseudo-working area;
the specific method comprises the following steps: averaging of at least 5 phosphorus layer thickness data using phosphorus mining areas within 1km of each otherThe value, instead of the thickness of the phosphate layer in the working area, is recorded as H Average of The method comprises the steps of carrying out a first treatment on the surface of the Counting the exposed dip angle of the surface of the quasi-working area, replacing the dip angle of the phosphate layer of the quasi-working area, and recording the stratum dip angle of the phosphate layer as alpha; aiming at the areas with different dip angles, calculating the volume of the phosphate rock layer in the areas, wherein the sum of the volume of the phosphate rock layer in each area is the volume of the phosphate rock layer in the whole working area;
s3, predicting potential resource quantity of the phosphate rock in the working area;
the prediction is performed according to the following formula: v=s Flat plate /COSα×H Average of M=v×ρ; wherein V is the volume of the phosphorite layer, S Flat plate In order to measure the projected plane area of the phosphorite layer of the pseudo working area by using MAPGIS software, alpha is the stratum inclination angle, COS alpha is the cosine function value of the inclination angle alpha, S Flat plate COS alpha is the area of the phosphorite layer inclined plane, H Average of The average thickness of the phosphate rock layer is represented by M, wherein M is the potential resource amount of phosphate rock, and ρ is the density of the phosphate rock;
s4, drawing a phosphorite potential resource quantity prediction estimation graph;
the specific method comprises the following steps: and taking the geological map as a base map, distributing projected plane area, inclination angle and average thickness data of the phosphorite layer on the base map, and putting a potential resource quantity calculation result table on the map.
2. The deep blind sedimentary phosphate rock prospecting prediction model of claim 1, wherein said step S1 further comprises: knowing the geological data of the region of the planned working area, and analyzing the mining geological background of the region; the regional geological data includes one or more of earth formation locations, strata, formations, magma, mineral data.
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