CN113624634B - Method for estimating content of metal elements in buried environment - Google Patents
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Abstract
The embodiment of the specification discloses a method for estimating the content of metal elements in a burial environment, which comprises the following steps: collecting underground buried soil in a buried area, and calculating the total mass of the underground soil; obtaining the slag concentration in the soil by an induced polarization method; determining the quality of the slag according to the total soil mass and the slag concentration; determining a first correlation between slag quality and metal yield; and determining the metal yield of the underground buried soil according to the first correlation and the slag quality. The invention realizes the calculation of the yield of the metal smelting products in the soil buried in the underground stratum, realizes the estimation of the yield of the metal smelting site, applies the geophysical method to the measurement of the metal content of the soil, widens the application of the geophysical exploration to the soil measurement, and has high accuracy, wide application range and great significance compared with a manual picking method.
Description
Technical Field
The application relates to the technical field of stratum detection, in particular to a method for estimating content of metal elements in a buried environment.
Background
In general, scientific researchers adopt a method for manually picking up slag by a designated sampling party, the method is only suitable for a research area with slag exposed on the ground surface and a small distribution range, large deviation is not avoided in manual picking, omission is easy, and a new method is urgently needed to be added. The former introduces the induced polarization method into the research of smelting site, but the method is used for detecting the specific position of the site, and the related research of quantitative calculation is not introduced.
Disclosure of Invention
In order to solve the above technical problem, the embodiments of the present specification are implemented as follows:
the embodiment of the specification provides a method for estimating the content of a metal element in a burial environment, which comprises the following steps:
collecting underground buried soil in a buried area, and calculating the total mass of the underground soil;
obtaining the slag concentration in the soil by an induced polarization method;
determining the quality of the slag according to the total soil mass and the slag concentration;
determining a first correlation between slag quality and metal yield;
and determining the metal yield of the underground buried soil according to the first correlation and the slag quality.
Optionally, the calculating the total mass of the underground soil specifically includes:
solving the volume of the soil in the buried area by using a volume formula;
and (4) solving the total soil mass by using a mass calculation formula.
Optionally, the obtaining of the slag concentration in the soil by the induced polarization method specifically includes:
carrying out induced polarization geophysical exploration on the buried region, and acquiring the chargeability of underground buried soil of the buried region;
determining a second correlation of chargeability and slag concentration;
and determining the slag concentration in the underground buried soil of the buried area according to the second correlation and the chargeability parameter.
Optionally, the performing induced polarization geophysical prospecting on the buried region specifically includes:
and (3) carrying out induced polarization geophysical exploration on the buried region by adopting a spectrum induced polarization instrument or a resistivity exploration instrument.
Optionally, determining the slag quality according to the total soil mass and the slag concentration specifically includes:
and calculating the quality of the slag in the buried area by using a slag quality formula and applying mathematical integral operation.
Optionally, the average polarizability value of the research area can be selected from the buried area with uniformly distributed slag, the slag concentration of the area is obtained according to the correlation function of polarizability and slag concentration, and then the total slag mass of the buried area is calculated by using the slag concentration.
Optionally, for a buried area with unevenly distributed slag, the polarizability of each coordinate point is different, so that the corresponding slag concentration is also different according to the correlation, the polarizability is a variable related to the coordinate, the corresponding slag concentration is also a variable related to the coordinate, and the slag quality in the whole research area is obtained according to an integral method.
Optionally, the second association relationship is expressed as follows: the formula is as follows:
p (x, y, z) ═ α C (x, y, z) + β or
C(x,y,z)＝(P(x,y,z)-β)/α
Wherein, P is chargeability, is a variable related to coordinate points, P values corresponding to different coordinate points are different, the P values are obtained by measurement of an induced polarization method, C is the slag concentration, and alpha and beta are constants. Can be obtained by laboratory fitting.
Optionally, the acquisition manner of α and β is as follows:
sampling in a research area, and fitting the measured slag concentration of a sampling point with charging performance by using statistical software to obtain alpha and beta;
or making soil with different slag concentrations in a laboratory, measuring corresponding chargeability values under different slag concentrations, and fitting the measured values by using statistical software to obtain alpha and beta.
Optionally, the first association relationship is: the slag yield is 3-5 times the metal yield by mass.
The embodiment of the specification adopts at least one technical scheme which can achieve the following beneficial effects:
the invention realizes the calculation of the yield of the metal smelting products in the soil buried in the underground stratum, realizes the estimation of the yield of the metal smelting site, applies the geophysical method to the measurement of the metal content of the soil, widens the application of the geophysical exploration to the soil measurement, and has high accuracy, wide application range and great significance compared with a manual picking method.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic flow chart of a method for estimating the content of a metal element in a sequestration environment according to an embodiment of the present disclosure.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail and completely with reference to the following specific embodiments of the present application and the accompanying drawings. It should be apparent that the described embodiments are only some of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The method quantitatively calculates the concentration of the slag by using an induced polarization method and supplements a research method of metal smelting sites. Aiming at ancient metal smelting sites buried deeply underground, the technology needs to estimate the smelting scale of the ancient smelting sites, namely the metal production amount, due to the requirements of scientific research.
The technical solutions provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings.
Fig. 1 is a schematic flow chart of a method for estimating the content of a metal element in a sequestration environment according to an embodiment of the present disclosure. From the viewpoint of a program, the execution subject of the flow may be a program installed in an application server or an application client.
As shown in fig. 1, the process may include the following steps:
step 110: underground buried soil of the buried area is collected, and the total mass of the underground soil is calculated.
Optionally, the calculating the total mass of the underground soil specifically may include:
solving the volume of the soil in the buried area by using a volume formula;
and (4) solving the total soil mass by using a mass calculation formula.
And calculating the total volume of the soil in the buried area, wherein the length, the width and the exploration depth of the buried area are required to be measured, and the total volume of the soil in the buried area is obtained by multiplying the length, the width and the exploration depth.
And calculating the total soil mass of the buried area, wherein the total volume value is required to be utilized, and the total soil mass of the buried area is obtained by multiplying the total volume value by the soil density of the area. Wherein, the soil density can be obtained by looking up related geological data or measuring a soil sample in a laboratory.
Step 120: and obtaining the slag concentration in the soil by an induced polarization method.
Optionally, the obtaining of the slag concentration in the soil by the induced polarization method specifically includes:
carrying out induced polarization geophysical exploration on the buried region, and acquiring the chargeability of underground buried soil of the buried region;
determining a second correlation of chargeability and slag concentration;
and determining the slag concentration in the underground buried soil of the buried area according to the second correlation and the chargeability parameter.
Optionally, the second association relationship is expressed as follows: the formula is as follows:
p (x, y, z) ═ α C (x, y, z) + β or
C(x,y,z)＝(P(x,y,z)-β)/α
Wherein, P is chargeability, is a variable related to coordinate points, P values corresponding to different coordinate points are different, the P values are obtained by measurement of an induced polarization method, C is the slag concentration, and alpha and beta are constants. Can be obtained by laboratory fitting.
Optionally, the acquisition manner of α and β is as follows:
sampling in a research area, and fitting the measured slag concentration of a sampling point with charging performance by using statistical software to obtain alpha and beta;
or making soil with different slag concentrations in a laboratory, measuring corresponding chargeability values under different slag concentrations, and fitting the measured values by using statistical software to obtain alpha and beta.
The method comprises the steps of self-preparing a soil sample, formulating soil samples with different slag concentrations by using slag and soil in a research area, measuring the chargeability (polarizability) of the soil with fixed slag concentration by using an induced polarization method testing instrument (such as a spectrum induced polarization instrument or a resistivity exploration instrument), and fitting a linear correlation relationship between a plurality of groups of chargeability and slag concentration data in statistical software.
Optionally, the performing induced polarization geophysical prospecting on the buried region specifically includes:
and (3) carrying out induced polarization geophysical exploration on the buried region by adopting a spectrum induced polarization instrument or a resistivity exploration instrument.
An exploration area and an exploration depth are determined before exploration, the used exploration instruments comprise but are not limited to a spectrum excitation polarimeter and a resistivity exploration instrument, the geophysical parameter required to be obtained by exploration is the chargeability (polarizability) of soil, the parameter is discrete data, numerical values of all points in the ground are different, and for a buried area with more uniform slag distribution, an average value can be selected for subsequent calculation. Data acquired by field exploration also needs to be imported with professional software for processing and removing useless information, and the software used comprises but is not limited to RES3DINV software.
Step 130: and determining the quality of the slag according to the total soil mass and the slag concentration.
Optionally, determining the slag quality according to the total soil mass and the slag concentration specifically includes:
and calculating the quality of the slag in the buried area by using a slag quality formula and applying mathematical integral operation.
Optionally, the average polarizability value of the research area can be selected from the buried area with uniformly distributed slag, the slag concentration of the area is obtained according to the correlation function of polarizability and slag concentration, and then the total slag mass of the buried area is calculated by using the slag concentration.
Optionally, for a buried area with unevenly distributed slag, the polarizability of each coordinate point is different, so that the corresponding slag concentration is also different according to the correlation, the polarizability is a variable related to the coordinate, the corresponding slag concentration is also a variable related to the coordinate, and the slag quality in the whole research area is obtained according to an integral method.
Step 140: a first correlation of slag quality and metal production is determined.
Optionally, the first association relationship is: the output of slag is 3-5 times of the metal output by mass, and smelting technology, raw materials and the like influence the ratio.
Step 150: and determining the metal yield of the underground buried soil according to the first correlation and the slag quality.
Based on the method of fig. 1, the embodiments of the present specification also provide some specific implementations of the method, which are described below.
The invention relates to a novel method for estimating metal yield in stratum burial by utilizing a geophysical theory, which introduces an induced polarization method geophysical exploration means to estimate the metal yield of an ancient metal smelting site. The calculation method mainly comprises the steps of measuring the induced polarization parameter charging rate of a soil sample and the concentration of the residual smelting slag in the soil sample in a laboratory, and fitting to generate a linear correlation relationship between the induced polarization parameter charging rate and the concentration of the residual smelting slag in the soil sample; carrying out induced polarization geophysical exploration on a slag buried area of the whole research area, and collecting chargeability parameters of underground buried soil of the buried area; solving the volume of the soil in the buried area by using a volume formula; calculating the total soil mass by using a mass calculation formula; calculating the quality of the smelting slag in the buried area by using a slag quality formula and applying mathematical integral operation; based on the correlation between slag quality and total metal production (Eschenlohr, 1991; Senneels, 1993; Leroy, 2001), the metal yield of the ancient metal smelting site in the year can be estimated and the production scale thereof can be evaluated.
The key technology of the scheme comprises the following two points:
(1) fitting to obtain a linear correlation between polarizability and slag concentration
And measuring the induced polarization parameter charging rate of the soil sample and the concentration of the residual smelting slag in the soil sample in a laboratory, and fitting to generate a linear correlation relationship between the induced polarization parameter charging rate and the concentration of the residual smelting slag in the soil sample. The method comprises the steps of self-preparing a soil sample, formulating the soil sample with different slag concentrations by using slag and soil in a research area, measuring the chargeability (polarizability) of the soil with fixed slag concentration by using an induced polarization method testing instrument (such as a spectrum induced polarization instrument or a resistivity exploration instrument), and fitting a linear correlation relationship between a plurality of groups of chargeability and slag concentration data in statistical software.
(2) Calculating the total mass of the slag
The average polarizability value of the research area can be selected from the buried area with uniformly distributed slag, the slag concentration (which is a constant value) of the area is obtained according to the correlation function of polarizability and slag concentration, and then the total slag mass of the buried area is calculated by using the constant value. For the buried areas with unevenly distributed slag, the polarizability of each coordinate point is different, so the corresponding slag concentration is different according to the correlation relationship, the polarizability is a variable related to the coordinate, the corresponding slag concentration is a variable related to the coordinate, and the slag quality in the whole research area needs to be obtained according to an integral method.
The specific implementation mode is as follows:
1. estimating metal production capacity of a smelting site
For ancient smelting sites, the metal yield cannot be directly obtained, and most of the metal yield can be directly found at present as smelting residual substances, such as smelting slag. Generally, the output of the slag is about 3 to 5 times of the metal by mass, and smelting technology, raw materials and the like influence the ratio, or international smelting standards can be directly referred to (Eschenlohr, 1991; Senneels, 1993; Leroy, 2001), so that the metal output (production scale) of the site in the current year can be indirectly obtained by checking the quality of the slag remained in the site.
The problem is shifted to finding out the mass M of slag remaining in the site.
2. Obtaining the mass M of the slag in the underground soil
The calculation formula of the total mass M of the slag in the soil is as follows:
m is C M formula (1)
Wherein C is the slag concentration in the soil, and m is the total mass of the soil.
The total soil mass m calculation formula is as follows:
formula (2) where m is ρ ═ V
Wherein rho is the soil density, the densities of different research areas are different, and the density can be obtained by looking up geological data or by using the soil density under the general condition. And V is the soil volume of the research area.
V ═ a ═ b ═ c formula (3)
Wherein, a, b and c are respectively the length, width and depth of the calculated soil body, and can be obtained by field measurement.
The problem is shifted to finding out the slag concentration C of the slag remaining in the underground site.
3. Obtaining the slag concentration C in the soil
The physical parameter obtained by the induced polarization method through direct measurement is chargeability parameter, P for short.
There is a linear correlation between chargeability P and slag concentration C (Florsch, 2011) with the following formula:
p (x, y, z) ═ α ═ C (x, y, z) + β formula (4) or
C (x, y, z) ═ P (x, y, z) - β)/α formula (5)
Wherein, P is chargeability, is a variable related to coordinate points, P values corresponding to different coordinate points are different, and the P values are obtained by measurement of an induced polarization method; c is the slag concentration; the constants α and β can be obtained by laboratory fitting.
4. Fitting constants alpha and beta
Sampling in a research area, measuring the slag concentration C and the chargeability P of a sampling point, fitting by using statistical software to obtain a linear correlation relation between P and C, and substituting the values of alpha and beta in the relation into a formula (5).
Or directly setting the soil with different slag concentrations in a laboratory, measuring corresponding chargeability values under different slag concentrations, and fitting the measured values by using statistical software.
5. Determining the mass M of the slag
Since P is a variable related to coordinates (x, y, z) and the concentration C is also a variable related to (x, y, z), finding the slag mass in the investigation region requires using an integral form to convert equation (1) to an integral form related to (x, y, z) as follows:
m (x, y, z) ═ z ^ c integral whole number of events (6)
Substituting the formula (5) C into the formula (6), substituting the formula (2) obtained M into the formula (6), and integrating to obtain the total slag mass M of the research area. And comparing M with the international standard to obtain the total metal smelting amount in ancient times of the research area.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the system embodiment, since it is substantially similar to the method embodiment, the description is simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
The above description is only an example of the present application and is not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (10)
1. A method of estimating the content of metallic elements in a sequestration environment, said method comprising:
collecting underground buried soil in a buried area, and calculating the total mass of the underground soil;
obtaining the slag concentration in the soil by an induced polarization method;
determining the quality of the slag according to the total soil mass and the slag concentration;
determining a first correlation between slag quality and metal yield;
and determining the metal yield of the underground buried soil according to the first correlation and the slag quality.
2. The method of claim 1, wherein the calculating the total mass of the subsurface soil comprises:
solving the volume of the soil in the buried area by using a volume formula;
and (4) solving the total soil mass by using a mass calculation formula.
3. The method according to claim 1, wherein the obtaining of the slag concentration in the soil by the induced polarization method specifically comprises:
carrying out induced polarization geophysical exploration on the buried region, and acquiring the chargeability of underground buried soil of the buried region;
determining a second correlation of chargeability and slag concentration;
and determining the slag concentration in the underground buried soil of the buried area according to the second correlation and the chargeability parameter.
4. The method of claim 3, wherein the performing induced polarization geophysical surveys of the buried region comprises:
and (3) carrying out induced polarization geophysical exploration on the buried region by adopting a spectrum induced polarization instrument or a resistivity exploration instrument.
5. The method of claim 1, wherein determining the slag mass from the total soil mass and the slag concentration comprises:
and calculating the quality of the slag in the buried area by using a slag quality formula and applying mathematical integral operation.
6. The method of claim 1, wherein the average polarizability value of the area under investigation is selected from a buried area having a uniform slag distribution, the slag concentration in the area is obtained as a function of polarizability with respect to slag concentration, and the slag concentration is used to calculate the total mass of slag in the buried area.
7. The method of claim 1, wherein for a buried area with unevenly distributed slag, the polarizability of each coordinate point is different, and therefore the corresponding slag concentration is also different according to the correlation, the polarizability is a variable with respect to the coordinate, and the corresponding slag concentration is also a variable with respect to the coordinate, and the quality of the slag in the entire area of interest is determined by an integral method.
8. The method of claim 3, wherein the second association is represented as follows: the formula is as follows:
p (x, y, z) ═ α C (x, y, z) + β or
C(x,y,z)＝(P(x,y,z)-β)/α
Wherein, P is chargeability, is a variable related to coordinate points, P values corresponding to different coordinate points are different, the P values are obtained by measurement of an induced polarization method, C is the slag concentration, and alpha and beta are constants which can be obtained by fitting in a laboratory.
9. The method of claim 8, wherein α and β are obtained as follows:
sampling in a research area, and fitting the measured slag concentration of a sampling point with charging performance by using statistical software to obtain alpha and beta;
or making soil with different slag concentrations in a laboratory, measuring corresponding chargeability values under different slag concentrations, and fitting the measured values by using statistical software to obtain alpha and beta.
10. The method of claim 1, wherein the first correlation is: the slag yield is 3-5 times the metal yield by mass.
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