CN117238405A - Geochemical data analysis method and device based on deep learning - Google Patents

Geochemical data analysis method and device based on deep learning Download PDF

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CN117238405A
CN117238405A CN202311219804.6A CN202311219804A CN117238405A CN 117238405 A CN117238405 A CN 117238405A CN 202311219804 A CN202311219804 A CN 202311219804A CN 117238405 A CN117238405 A CN 117238405A
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data
ore
deep learning
depth
talcum
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CN117238405B (en
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杨光树
徐晓飞
谢志鹏
陈爱兵
燕永锋
王加昇
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Kunming University of Science and Technology
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Abstract

The application provides a geochemical data analysis method and a device based on deep learning, which relate to the technical field of geochemical data analysis methods.

Description

Geochemical data analysis method and device based on deep learning
Technical Field
The application relates to the technical field of geochemical data analysis methods, in particular to a geochemical data analysis method and device based on deep learning.
Background
Geochemistry is the subject of studying geochemical composition, cyclic processes and interactions, and is widely used in geological exploration, which can provide information about geologic structures, mineral composition, deposit type, groundwater resources, etc., helping users to predict various mineral resources. With the rise of big data and artificial intelligence technology, machine learning methods such as vector machines and convolutional neural networks are also used for calculation in geochemical data analysis. Compared with the traditional manual calculation mode, the machine deep learning training device has the advantages that the machine deep learning training device can be used for analyzing and processing large-batch and high-latitude data more quickly, and when input variables are more complex, the machine deep learning training device has more obvious advantages.
Talc is a very important industrial mineral, the study of which has a great significance for geochemistry, the presence of which can provide important clues to the environment in which the deposit is formed, the formation of which generally requires specific temperature, pressure and chemical environmental conditions. By studying the trace elements, isotopic composition and crystal structure in talc, it is possible to infer the depth of crust, temperature, fluid composition and magma and deposit formation processes at deposit formation, and the formation and stable presence of talc in connection with geothermal activity and trace elements can be used as indicators to help study the characteristics and evolution processes of geothermal systems, so key information on deposit formation, geothermal activity, geological processes and fluid circulation can be obtained by studying the location, depth etc. of talc.
In the prior art, various geological conditions, geophysics, geochemistry, remote sensing data and the like are generally used as input variables to predict the position of talc ores, but the prediction results are generally only plane coordinates of predicted mineral points, the plane coordinates are converted into longitudes and latitudes to confirm the positions, the depth of the predicted mineral points is not outputted, the depth positions of the predicted mineral points in a stratum are difficult to distinguish, and the types of the talc ores are not distinguished, so that erroneous judgment on the prediction results is easy to occur in the prior art, so that it is necessary to provide an analysis method capable of predicting the depth positions of the mineral points by using deep learning and analyzing the talc ore types in an unexplored mine according to the prediction depth.
Disclosure of Invention
The application aims to provide a geochemical data analysis method and device based on deep learning, which are used for solving the problems in the background technology.
In order to achieve the above purpose, the present application provides the following technical solutions:
a geochemical data analysis method based on deep learning comprises the following steps:
acquiring data of existing talcum ores, including position information, geological structure data, lithology data, stratum data, landform topographic data and age data of the areas, forming a data set of each area, marking on geological map data, numbering the existing talcum ores, forming sample tags, and enabling the data set of each area to correspond to the sample tags of the area one by one;
a deep learning model based on a convolutional neural network is constructed, data of the existing talc ore is input into the deep learning model, the average deposition rate of the position of the existing talc ore is generated, and the depth of the talc ore is calculated according to the age data;
according to the actual depth of the existing talcum ore, an ideal confidence interval of the talcum ore depth calculated by the deep learning model is generated, then according to the talcum ore depth calculated by the deep learning model, a calculated confidence interval is generated, and the ideal confidence interval is compared with the calculated confidence interval to evaluate the deep learning model.
Preferably, the location information of the talc ore includes plane coordinates and depth of the talc ore, the geological structure data includes a structure map, a geological map, topographic data and stratum data of the area, the lithology data includes rock species distribution data of quartzite, chalcocite and rutile, the stratum data includes data of a sedimentary layer, the topographic data includes topographic line, topographic feature data showing relief of a contour line, and the age data includes age of the talc ore.
Preferably, the data of the rock species distribution of the quartzite, the chalcocite and the rutile comprise the content and the distribution sequence of the quartzite, the chalcocite and the rutile, and the data of the deposition layer comprise the number of layers and the thickness of the deposition layer and the ages corresponding to different depths.
Preferably, the sampling mode of the existing smooth rock ore is that the sampling is longitudinally performed at the central position of the plane coordinate of the existing smooth rock ore, the number of layers of the deposited layers and the thickness of each deposited layer are obtained, n sampling points are arranged in each deposited layer, the interval distances of the n sampling points in the same deposited layer are equal, and the age of each sampling point and the depth relative to the ground surface are measured.
Preferably, the logic for calculating the depth of the talc ore from the age data is:
calibrating the data acquired by the sampling points, numbering the direction from the earth surface to the deposition layers, and calibrating the thickness of each deposition layer as D i Age of each sampling point is calibrated asThe depth of each sampling point relative to the ground surface is calibrated to be +.>i represents the number of layers of the deposited layer, i=1, 2,3 … … N, i is a positive integer, j represents the number of sampling points, j=1, 2,3 … … N, j is a positive integer;
according to the age of sampling point in certain sediment layerAnd a depth calibration relative to the ground surface of +.>Calculating the average deposition rate of the deposited layer and calibrating the average deposition rate as +.>The calculation formula is as follows:
according to the thickness D of different deposited layers i The duty ratio in the total thickness of all the deposition layers is fitted by adopting a logarithmic function to generate the weight coefficient f of different deposition layers i Generating a weight coefficient f i The formula is as follows:
wherein alpha represents a weighting coefficient, and alpha is more than 0, and is used for adjusting the deep learning model;
according to the average deposition rate of different deposition layersAnd a weight coefficient f i Calculating the average deposition rate +.>The calculation formula is as follows:
the age of the existing talc ore is marked as Th, and Th and the average deposition rate of the talc ore are based on the age of the talc oreGenerating a talcum ore depth Lh' calculated by a deep learning model, wherein the calculation formula is as follows:
lh' represents the depth of the talc ore calculated and generated by the deep learning model according to the position information, geological structure data, lithology data, stratum data, geomorphic topographic data, age data of the area where the talc ore is located and data acquired by the sampling points.
Preferably, the determining logic for determining whether the deep learning model meets the requirements is:
dividing data of all talcum ore depths generated by the deep learning model after multiple times of calculation into x data sets according to time sequence, and calibrating the data as W x X is a positive integer, for data set W x The data in the data are numbered and marked as Lh y ' y is a positive integer, each dataset W x There are p data, W x ={Lh 1 ′,Lh 2 ′,Lh 3 ′……Lh p ' p is a positive integer, dataset W x The data in the system approximately obeys Gaussian distribution, the 95% confidence level is obtained, the actual depth of the existing talcum ore is marked as Lh, and the actual depth of the existing talcum ore is taken as a data set W x The ideal mean value of (a), the data set W x Is calibrated as S x The calculation formula is as follows:
according to the ideal standard deviation S x Generating a dataset W x The ideal confidence interval is as follows:
the t value can be found in the t value distribution table according to the confidence level and p;
will data set W x The calculated average value is calibrated asThe calculation formula is as follows:
will data set W x The calculated standard deviation is calibrated as S x ' the calculation formula is:
from calculating standard deviation S x ' generate data set W x The calculated confidence interval is as follows:
will data set W x Comparing the ideal confidence interval with the calculated confidence interval, calculating an average value if and only if the calculated confidence interval falls within the ideal confidence intervalThe actual depth Lh of the ore closer to the talcum powder is calculated more accurately, and the calculation is considered to be qualified at the moment, and the judgment formula is as follows:
when q data sets W are consecutive x When the calculation is qualified, the deep learning model is proved to meet the requirement, the verified deep learning model can be output, otherwise, the deep learning model is judged according to the errorThe weighting coefficients and parameters of the model are adjusted by back propagation and optimization algorithms.
Preferably, the data analysis logic for the unexplored mine is:
setting m sampling points at the same depth of talcum ore, measuring element content of each sampling point, wherein the silicon content is respectivelySulfur content is->The iron content is->Wherein->The content values of silicon, sulfur and iron at the r point are respectively represented, and the content values of silicon, sulfur and iron are subjected to the extremely-bad treatment, and the calculation formula is as follows:
in the middle ofExtremely bad data of silicon, sulfur, iron, respectively, < >>Respectively represent the maximum value of the silicon, sulfur and iron contents in the sampling points, +.>Respectively representing the minimum values of silicon, sulfur and iron contents in the sampling points;
calculating a range average value according to range data of silicon, sulfur and iron, and calculating a judgment coefficient according to the range average value, wherein the calculation formula of the judgment coefficient is as follows:
in the middle ofThe extremely poor average values of silicon, sulfur and iron are respectively shown;
according to the determination coefficient theta 1 、θ 2 、θ 3 To judge the type of talcum ore and the possible accompanying ore, the judging method is as follows:
the smooth ore is rich in silicon, and the possible associated ore is quartz rock;
the smooth ore is sulfur-rich, and the possible associated ore is chalcocite;
the talc ore is rich in iron and the associated ore may be rutile.
The application also provides a geochemical data analysis device based on deep learning, which is used for realizing the geochemical data analysis method, and comprises the following steps:
the sample construction module is used for acquiring the data of the existing talcum ores, including the position information, geological structure data, lithology data, stratum data, landform topographic data and age data of the area, forming a data set of each area, marking the geological map data, numbering the existing talcum ores, forming sample tags, and enabling the data set of each area to correspond to the sample tags of the area one by one;
the deep learning module is used for constructing a deep learning model based on a convolutional neural network, inputting the data of the existing smooth ore into the deep learning model, generating the average deposition rate of the position of the existing smooth ore, and calculating the depth of the smooth ore according to the age data;
the interval prediction module is used for generating an ideal confidence interval of the talc ore depth calculated by the deep learning model according to the actual depth of the existing talc ore, generating a calculated confidence interval according to the talc ore depth calculated by the deep learning model, and comparing the ideal confidence interval with the calculated confidence interval to evaluate the deep learning model;
and the type prediction module is used for carrying out field sampling on the unexplored mine according to the calculated talcum ore depth to obtain element content data of sampling points, analyzing the element content data, judging the type of the talcum ore at the sampling points and predicting associated ores possibly existing at the sampling points.
Compared with the prior art, the application has the beneficial effects that:
according to the method, the deep learning model is built through the position information, the geological structure data, the lithology data, the stratum data, the landform topographic data and the age data of the existing area where the talcum ore is located, the average deposition rate of the geology of the talcum ore point can be calculated, so that the depth of the geology where the talcum ore is located is deduced according to the age of a small amount of collected talcum samples, and meanwhile, the depth of the talcum ore calculated by the deep learning model can be more approximate to the actual depth of the talcum ore through updating and iterating the parameters of the deep learning model, so that the prediction result of the deep learning model is more accurate.
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FIG. 1 is a schematic flow chart of the method of the present application.
Detailed Description
The present application will be further described in detail with reference to specific embodiments in order to make the objects, technical solutions and advantages of the present application more apparent.
It is to be noted that unless otherwise defined, technical or scientific terms used herein should be taken in a general sense as understood by one of ordinary skill in the art to which the present application belongs. The terms "first," "second," and the like, as used herein, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "up", "down", "left", "right" and the like are used only to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed accordingly.
Examples:
referring to fig. 1, the present application provides a technical solution:
a geochemical data analysis method based on deep learning specifically comprises the following steps:
the method comprises the steps of obtaining position information, geological structure data, lithology data, stratum data, geomorphic topographic data and age data of an area where the existing talcum ore is located, forming a data set of each area, marking the geological map data, numbering the existing talcum ore, forming a sample label, and enabling the data set of each area to correspond to the sample label of the area one by one.
The area where the talcum ore adopted in the embodiment is located is the talcum ore which is mined and excavated in China, the position information of the point comprises the plane coordinates and depth of the talcum ore, the geological structure data comprise the structure diagram, the geological diagram, the topographic data and the stratum data of the area, the lithology data comprise the rock species distribution data of quartz rock, chalcocite and rutile, the stratum data comprise the data of a sedimentary layer, the topographic data comprise topographic feature data of topographic lines and contour lines showing relief, and the age data comprise the age of the talcum ore.
Further, the rock species distribution data of the quartz rock, the chalcocite and the rutile comprise the content and the distribution sequence of the quartz rock, the chalcocite and the rutile, the quartz rock, the chalcocite and the rutile are common associated ores of the talc ores, the type of the talc ores can be predicted through the content and the distribution sequence of the quartz rock, the chalcocite and the rutile, and the data of the deposit layer comprise the layer number and the thickness of the deposit layer and the ages corresponding to different depths.
The sampling mode of the existing smooth rock ore is that the central position of the plane coordinate of the existing smooth rock ore is longitudinally sampled, the number of layers of the deposited layers and the thickness of each deposited layer are obtained, n sampling points are arranged in each deposited layer, the interval distances of the n sampling points in the same deposited layer are equal, and the age of each sampling point and the depth relative to the ground surface are measured.
The method comprises the steps of constructing a deep learning model based on a convolutional neural network, inputting position information, geological structure data, lithology data, stratum data, geomorphic topographic data and age data of an area where the existing talcum ore is located into the deep learning model, generating an average deposition rate of the position where the existing talcum ore is located, and calculating the depth of the talcum ore according to the age data.
Calibrating the data acquired by the sampling points, numbering the direction from the earth surface to the deposition layers, and calibrating the thickness of each deposition layer as D i Age of each sampling point is calibrated asThe depth of each sampling point relative to the ground surface is calibrated to be +.>i denotes the number of layers of the deposited layer, i=1, 2,3 … … N, i is a positive integer, j denotes the number of sampling points, j=1, 2,3 … … N, j is a positive integer.
According to the age of sampling point in certain sediment layerAnd a depth calibration relative to the ground surface of +.>Calculating the average deposition rate of the deposited layer and calibrating the average deposition rate as +.>The calculation formula is as follows:
according to the thickness D of different deposited layers i The duty ratio in the total thickness of all the deposition layers is fitted by adopting a logarithmic function to generate the weight coefficient f of different deposition layers i Generating a weight coefficient f i The formula is as follows:
wherein alpha represents a weighting coefficient, alpha > 0, and is used for adjusting the depth model.
According to the average deposition rate of different deposition layersAnd a weight coefficient f i Calculating the average deposition rate +.>The calculation formula is as follows:
the age of the existing talc ore is marked as Th, and Th and the average deposition rate of the talc ore are based on the age of the talc oreGenerating a talcum ore depth Lh' calculated by a deep learning model, wherein the calculation formula is as follows:
lh' represents the depth of the talc ore calculated and generated by the deep learning model according to the position information, geological structure data, lithology data, stratum data, geomorphic topographic data, age data of the area where the talc ore is located and data acquired by the sampling points.
According to the actual depth of the existing talcum ore, an ideal confidence interval of the talcum ore depth calculated by the deep learning model is generated, then according to the talcum ore depth calculated by the deep learning model, a calculated confidence interval is generated, if and only if the calculated confidence interval falls in the ideal confidence interval, the condition is met, the deep learning model is proved to meet the requirement, the verified deep learning model can be output, and otherwise, the weighting coefficient and the parameter of the model are adjusted through the counter-propagation and optimization algorithm according to the error.
Dividing data of all talcum ore depths generated by the deep learning model after multiple times of calculation into x data sets according to time sequence, and calibrating the data as W x X is a positive integer, for data set W x The data in the data are numbered and marked as Lh y ' y is a positive integer, each dataset W x There are p data, W x ={Lh 1 ′,Lh 2 ′,Lh 3 ′……Lh p ' p is a positive integer, dataset W x The data in the system approximately obeys Gaussian distribution, the 95% confidence level is obtained, the actual depth of the existing talcum ore is marked as Lh, and the actual depth of the existing talcum ore is taken as a data set W x The ideal mean value of (a), the data set W x Is calibrated as S x The calculation formula is as follows:
regenerating data set W x The ideal confidence interval is as follows:
the t value can be found from the t value distribution table based on the confidence level and p.
And then the data set W x The calculated average value is calibrated asThe calculation formula is as follows:
data set W x The calculated standard deviation is calibrated as S x ' the calculation formula is:
regenerating data set W x The ideal confidence interval is as follows:
data set W x Comparing the ideal confidence interval with the calculated confidence interval, calculating an average value if and only if the calculated confidence interval falls within the ideal confidence intervalThe actual depth Lh of the ore closer to the talcum powder is calculated more accurately, and the calculation is considered to be qualified at the moment, and the judgment formula is as follows:
when q data sets W are consecutive x Balance meterAnd when the calculation is qualified, proving that the deep learning model meets the requirement, outputting the verified deep learning model, otherwise, adjusting the weighting coefficient and the parameter of the model through a counter-propagation and optimization algorithm according to the error.
According to the calculated talcum ore depth, the non-mined ore field is sampled to obtain element content data of sampling points, the element content data is analyzed, the type of the talcum ore at the position is judged, accompanying ores possibly existing at the position are predicted, and the judgment logic is as follows:
setting m sampling points at the same depth of talcum ore, measuring element content of each sampling point, wherein the silicon content is respectivelySulfur content is->The iron content is->Wherein->The content values of silicon, sulfur and iron at the r point are respectively represented, and the content values of silicon, sulfur and iron are subjected to the extremely-bad treatment, and the calculation formula is as follows:
in the middle ofExtremely bad data of silicon, sulfur, iron, respectively, < >>Respectively represent the maximum value of the silicon, sulfur and iron contents in the sampling points, +.>Respectively represent the minimum values of silicon, sulfur and iron contents in the sampling points.
And calculating a range average value according to the range data of the silicon, the sulfur and the iron, and calculating a judgment coefficient according to the range average value, wherein the calculation formula of the judgment coefficient is as follows:
in the middle ofThe very poor averages of silicon, sulfur, and iron are shown, respectively.
Under normal conditions, the distribution of silicon, sulfur and iron in a plurality of sampling points is relatively uniform, and the difference value of the content values among samples is relatively small, namely the extremely poor data of the silicon, the sulfur and the ironThe fluctuations are also small and are all approximately equal to 1, the calculated range mean +.>Are all about equal to 1, at this time, the judgment coefficient theta 1 、θ 2 、θ 3 All are at zero positions, when silicon element enrichment occurs in a sampling area, the difference value of the silicon element in the sampling point is increased, and the range data of the silicon element is +.>At [0,1]Internally fluctuating, extremely bad mean +.>Reduced to less than 1, while the data of sulfur and iron elements are unchanged, at this time theta 1 <0,θ 2 =0,θ 3 > 0, the smooth ore is considered to be rich in silicon, the associated ore possibly existing is quartz rock, and similarly, when sulfur element enrichment occurs in a sampling area, theta 1 >0,θ 2 <0,θ 3 =0, the talc ore is sulfur-rich, the associated ore which may be present is chalcocite, and when iron element enrichment occurs in the sampling area, θ 1 =0,θ 2 >0,θ 3 And < 0, wherein the smooth ore is rich in iron, and the possible associated ore is rutile.
The application also provides a geochemical data analysis device based on deep learning, which is used for realizing the geochemical data analysis method, and comprises the following steps:
the sample construction module is used for acquiring the data of the existing talcum ores, including the position information, geological structure data, lithology data, stratum data, landform topographic data and age data of the area, forming a data set of each area, marking the geological map data, numbering the existing talcum ores, forming sample tags, and enabling the data set of each area to correspond to the sample tags of the area one by one;
the deep learning module is used for constructing a deep learning model based on a convolutional neural network, inputting the data of the existing smooth ore into the deep learning model, generating the average deposition rate of the position of the existing smooth ore, and calculating the depth of the smooth ore according to the age data;
the interval prediction module is used for generating an ideal confidence interval of the talc ore depth calculated by the deep learning model according to the actual depth of the existing talc ore, generating a calculated confidence interval according to the talc ore depth calculated by the deep learning model, and comparing the ideal confidence interval with the calculated confidence interval to evaluate the deep learning model;
and the type prediction module is used for carrying out field sampling on the unexplored mine according to the calculated talcum ore depth to obtain element content data of sampling points, analyzing the element content data, judging the type of the talcum ore at the sampling points and predicting associated ores possibly existing at the sampling points.
When a small amount of scattered talcum ore is found out in a certain place, a researcher samples and analyzes geological structure data, lithology data and landform topographic data of the place, if the geological structure data, the lithology data and the landform topographic data are in accordance with the aggregation conditions of the talcum ore, a large amount of aggregated talcum ore veins can be judged to exist in the place, a mine field can be established, a small amount of the collected talcum ore is detected to obtain age data, the age data are input into a deep learning model, and therefore the depth of the talcum ore is calculated, and subsequent mining work is facilitated.
The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The foregoing is merely illustrative of the present application, and the present application is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present application.

Claims (8)

1. The geochemical data analysis method based on deep learning is characterized by comprising the following steps:
acquiring data of existing talcum ores, including position information, geological structure data, lithology data, stratum data, landform topographic data and age data of the areas, forming a data set of each area, marking on geological map data, numbering the existing talcum ores, forming sample tags, and enabling the data set of each area to correspond to the sample tags of the area one by one;
a deep learning model based on a convolutional neural network is constructed, data of the existing talc ore is input into the deep learning model, the average deposition rate of the position of the existing talc ore is generated, and the depth of the talc ore is calculated according to the age data;
according to the actual depth of the existing talcum ore, generating an ideal confidence interval of the talcum ore depth calculated by a deep learning model, then according to the talcum ore depth calculated by the deep learning model, generating a calculated confidence interval, and comparing the ideal confidence interval with the calculated confidence interval to evaluate the deep learning model;
and (3) carrying out field sampling on the unexplored mine field according to the calculated talcum ore depth to obtain element content data of sampling points, analyzing the element content data, judging the type of the talcum ore at the sampling points, and predicting the possible accompanying ores at the sampling points.
2. The method for analyzing geochemical data based on deep learning according to claim 1, wherein: the position information of the smooth stone ore comprises plane coordinates and depth of the smooth stone ore, the geological structure data comprise a structure diagram, a geological diagram, topographic data and stratum data of the area, the lithology data comprise rock species distribution data of quartz rock, chalcocite and rutile, the stratum data comprise data of a sedimentary layer, the topographic data comprise topographic feature data of topographic lines and contour lines for showing relief, and the age data comprise ages of the smooth stone ore.
3. The method for analyzing geochemical data based on deep learning according to claim 2, wherein: the rock species distribution data of quartzite, chalcocite and rutile comprise the content and distribution sequence of the quartzite, chalcocite and rutile, and the data of the deposition layer comprise the number of layers and the thickness of the deposition layer and the ages corresponding to different depths.
4. The method for analyzing geochemical data based on deep learning according to claim 1, wherein: the sampling mode of the existing smooth rock ore is that the central position of the plane coordinate of the existing smooth rock ore is longitudinally sampled, the number of layers of the deposited layers and the thickness of each deposited layer are obtained, n sampling points are arranged in each deposited layer, the interval distances of the n sampling points in the same deposited layer are equal, and the age of each sampling point and the depth relative to the ground surface are measured.
5. The method for analyzing geochemical data based on deep learning according to claim 1, wherein: logic for calculating the depth of the talc ore based on the age data is:
calibrating the data acquired by the sampling points, numbering the direction from the earth surface to the deposition layers, and calibrating the thickness of each deposition layer as D i Age of each sampling point is calibrated asThe depth of each sampling point relative to the ground surface is calibrated asi represents the number of layers of the deposited layer, i=1, 2,3 … … N, i is a positive integer, j represents the number of sampling points, j=1, 2,3 … … N, j is a positive integer;
according to the age of sampling point in certain sediment layerAnd a depth calibration relative to the ground surface of +.>Calculating the average deposition rate of the deposited layer and calibrating the average deposition rate as +.>The calculation formula is as follows:
according to the thickness D of different deposited layers i The duty ratio in the total thickness of all the deposition layers is fitted by adopting a logarithmic function to generate the weight coefficient f of different deposition layers i Generating a weight coefficient f i The formula is as follows:
wherein alpha represents a weighting coefficient, and alpha is more than 0, and is used for adjusting the deep learning model;
according to the average deposition rate of different deposition layersAnd a weight coefficient f i Calculating the average deposition rate +.>The calculation formula is as follows:
the age of the existing talc ore is marked as Th, and Th and the average deposition rate of the talc ore are based on the age of the talc oreGenerating a talcum ore depth Lh' calculated by a deep learning model, wherein the calculation formula is as follows:
lh' represents the depth of the talc ore calculated and generated by the deep learning model according to the position information, geological structure data, lithology data, stratum data, geomorphic topographic data, age data of the area where the talc ore is located and data acquired by the sampling points.
6. The method for analyzing geochemical data based on deep learning according to claim 1, wherein: the decision logic for determining whether the deep learning model meets the requirements is:
dividing data of all talcum ore depths generated by the deep learning model after multiple times of calculation into x data sets according to time sequence, and calibrating the data as W x X is a positive integer, for data set W x The data in the data are numbered and marked as Lh y ' y is a positive integer, each dataset W x There are p data, W x ={Lh 1 ′,Lh 2 ′,Lh 3 ′……Lh p ' p is a positive integer, dataset W x The data in the system approximately obeys Gaussian distribution, the 95% confidence level is obtained, the actual depth of the existing talcum ore is marked as Lh, and the actual depth of the existing talcum ore is taken as a data set W x The ideal mean value of (a), the data set W x Is calibrated as S x The calculation formula is as follows:
according to the ideal standard deviation S x Generating a dataset W x The ideal confidence interval is as follows:
the t value can be found in the t value distribution table according to the confidence level and p;
will data set W x The calculated average value is calibrated asThe calculation formula is as follows:
will data set W x The calculated standard deviation is calibrated as S x ' the calculation formula is:
from calculating standard deviation S x ' generate data set W x The calculated confidence interval is as follows:
will data set W x Comparing the ideal confidence interval with the calculated confidence interval, calculating an average value if and only if the calculated confidence interval falls within the ideal confidence intervalThe actual depth Lh of the ore closer to the talcum powder is calculated more accurately, and the calculation is considered to be qualified at the moment, and the judgment formula is as follows:
when q data sets W are consecutive x And when the calculation is qualified, proving that the deep learning model meets the requirement, outputting the verified deep learning model, otherwise, adjusting the weighting coefficient and the parameter of the model through a counter-propagation and optimization algorithm according to the error.
7. The method for analyzing geochemical data based on deep learning according to claim 1, wherein: the data analysis logic for the unexplored mine is:
setting m sampling points at the same depth of talcum ore, measuring element content of each sampling point, wherein the silicon content is respectivelySulfur content is->The iron content is->Wherein->The content values of silicon, sulfur and iron at the r point are respectively represented, and the content values of silicon, sulfur and iron are subjected to the extremely-bad treatment, and the calculation formula is as follows:
in the middle ofExtremely bad data of silicon, sulfur, iron, respectively, < >>Respectively represent the maximum value of the silicon, sulfur and iron contents in the sampling points, +.>Respectively representing the minimum values of silicon, sulfur and iron contents in the sampling points;
calculating a range average value according to range data of silicon, sulfur and iron, and calculating a judgment coefficient according to the range average value, wherein the calculation formula of the judgment coefficient is as follows:
in the middle ofThe extremely poor average values of silicon, sulfur and iron are respectively shown;
according to the determination coefficient theta 1 、θ 2 、θ 3 To judge the type of talcum ore and the possible accompanying ore, the judging method is as follows:
the smooth ore is rich in silicon, and the possible associated ore is quartz rock;
the smooth ore is sulfur-rich, and the possible associated ore is chalcocite;
the talc ore is rich in iron and the associated ore may be rutile.
8. A geochemical data analysis device based on deep learning, characterized in that: the data analysis device is used for realizing the geochemical data analysis method according to any one of claims 1 to 7, and comprises:
the sample construction module is used for acquiring the data of the existing talcum ores, including the position information, geological structure data, lithology data, stratum data, landform topographic data and age data of the area, forming a data set of each area, marking the geological map data, numbering the existing talcum ores, forming sample tags, and enabling the data set of each area to correspond to the sample tags of the area one by one;
the deep learning module is used for constructing a deep learning model based on a convolutional neural network, inputting the data of the existing smooth ore into the deep learning model, generating the average deposition rate of the position of the existing smooth ore, and calculating the depth of the smooth ore according to the age data;
the interval prediction module is used for generating an ideal confidence interval of the talc ore depth calculated by the deep learning model according to the actual depth of the existing talc ore, generating a calculated confidence interval according to the talc ore depth calculated by the deep learning model, and comparing the ideal confidence interval with the calculated confidence interval to evaluate the deep learning model;
and the type prediction module is used for carrying out field sampling on the unexplored mine according to the calculated talcum ore depth to obtain element content data of sampling points, analyzing the element content data, judging the type of the talcum ore at the sampling points and predicting associated ores possibly existing at the sampling points.
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