CN114332400A - Geological profile vector diagram digitalization method - Google Patents
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Abstract
The invention relates to a digitalization method of a geological profile vector diagram, belonging to the technical field of geological profile diagram drawing, and the digitalization method comprises the following steps: s1, preprocessing the geological profile vector diagram to define lithology information as file attributes, and converting the lithology information into plain format data with lithology attributes, wherein the geological profile vector diagram comprises point files, line files and zone files; the clear format data is the attribute value of the point-line-surface file; s2, extracting plain format data at different positions in the geological profile vector diagram according to a certain network interval to obtain digitized data corresponding to the geological profile vector diagram, wherein the smaller the network interval is, the larger the extracted digitized data quantity is; and S3, quantitatively describing and analyzing the uncertainty of the digitized data of the geological section vector diagram by using the concept of the membership function, and finally carrying out digital processing on the geological section vector diagram.
Description
Technical Field
The invention relates to the technical field of geological profile drawing, in particular to a method for digitizing a geological profile vector diagram.
Background
The geological profile vector diagram is a diagram which represents geological phenomena and mutual relations on a geological profile according to a certain scale and is usually drawn by software such as GIS and the like; the geological profile vector diagram bears the lithology information of the drill hole, the investigation results of various projects, the geological working experience of a plotter and the like, can better depict the geological information vertical to the ground, and is one of important geological data when working such as three-dimensional geological space modeling, underground water numerical simulation, oil deposit numerical simulation and the like.
Qualitative analysis is often carried out on the geological profile in the modeling process, or a three-dimensional joint profile is established according to the topological relation of the profile; with the improvement of the requirement on the model precision and the comprehensive application of artificial intelligence methods such as machine learning and reinforcement learning, the utilization rate of the geological profile as an important and precious geological data needs to be improved.
The main problems in the prior art include: (1) the geological profile is a vector diagram, and cannot be quantitatively analyzed; (2) the geological map has certain uncertainty at a non-drilling position, uncertainty analysis needs to be carried out on the geological map, and the operation steps are complicated; (3) in most application scenarios, geological profiles cannot be directly exploited for random simulation.
Disclosure of Invention
The embodiment of the invention provides a geological profile vector diagram digitalizing method which is reasonable in design, based on a multi-type data function model, extracts, calculates, processes and analyzes information data on a geological profile diagram one by one, and finally digitalizes the geological profile vector diagram, so that the utilization rate of the geological profile vector diagram is improved, and the geological profile vector diagram can be directly imported and utilized as basic data; meanwhile, the information uncertainty of the geological profile vector diagram can be represented through membership, the reliability and the accuracy of information data are described quantitatively, and the problems in the prior art are solved.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a method for digitizing a geological profile vector map, said method comprising the steps of:
s1, preprocessing the geological profile vector diagram to define lithology information as file attributes, and converting the lithology information into plain format data with lithology attributes, wherein the geological profile vector diagram comprises point files, line files and zone files; the clear format data is the attribute value of the point-line-surface file;
s2, extracting plain format data at different positions in the geological profile vector diagram according to a certain network interval to obtain digitized data corresponding to the geological profile vector diagram, wherein the smaller the network interval is, the larger the extracted digitized data quantity is;
s3, quantitatively describing and analyzing uncertainty of the digitized data of the geological section vector diagram by using the concept of a membership function, and finally carrying out digital processing on the geological section vector diagram, wherein the membership function is defined as follows:
in particular, the method comprises the following steps of,
controlling the distance between the position of the profile point and the closer position of the profile point to the drilling hole;
is a parameter to be determined;
is an empirical parameter, represents the reliability of the section at a long distance and has a value range of [0, 1%]。
The method for preprocessing the geological profile vector diagram to define the lithology information as the file attribute so as to convert the lithology information into plain format data with the lithology attribute comprises the following steps:
s1.1, translating the coordinates of the sectional drawing to translate the initial origin of the sectional line to the system origin;
s1.2, unifying the coordinates of a horizontal scale and a vertical scale of the cross-sectional drawing, and converting the coordinates into coordinate data in a meter unit;
s1.3, generalizing the lithology of the profile area file, and respectively marking the lithology as lithology 1, lithology 2, lithology … … and lithology n;
s1.4, combining adjacent communicated zone files with the same lithology;
s1.5, matching the lithological properties of the arc sections of the sections, converting the arc sections of the files in the control area into line files, and setting the properties of the line files into a form of up-down lithological properties;
and S1.6, converting the line file and the section line file containing the lithology information into plain code format.
The method for extracting plain format data at different positions in the geological profile vector diagram according to a certain network interval to obtain the digital data corresponding to the geological profile vector diagram comprises the following steps:
s2.1, setting a horizontal interval parameter and a vertical interval parameter;
s2.2, gridding the section map, calculating the intersection point position of the vertical grid line and the section arc section, matching the lithology of the intersection point, and extracting the intersection point position of the section arc section end point and the control drill hole;
s2.3, processing lithology information of the pinch-out position to check whether the lithologies are connected;
s2.4, calculating the intersection points of the horizontal grid lines and the vertical grid lines and judging the lithology of the intersection points;
and S2.5, converting the data coordinate from two dimensions to three dimensions by combining the geographic coordinate of the section line.
The method comprises the following steps of quantitatively describing and analyzing uncertainty of digitalized data of the geological section vector diagram by utilizing a concept of a membership function, and finally, carrying out digitalized processing on the geological section vector diagram, wherein the digitalized processing comprises the following steps:
s3.1, counting the distances of 2 adjacent drill holes of all geological profiles, and forming an array by the distances
(ii) a Setting confidence
，
Is a significant factor;
s3.2, calculating a corresponding confidence interval under the confidence
To indicate that the distance of 2 adjacent boreholes is
Has a probability of falling into
In the range of (1), wherein,
and
is confidence level
Two confidence limits under;
s3.3, to
And
to solve the undetermined parameter
；
S3.4, calculating the lithologic membership degree of each grid;
and S3.5, outputting the related data in a digital format, wherein the format is ((X, Y, Z), lithology 1 membership degree, lithology 2 membership degree, … … and lithology n membership degree), the lithology 1 membership degree + lithology 2 membership degree + … … + lithology n membership degree =1, and the (X, Y, Z) is a three-dimensional coordinate.
The undetermined parameter
Wherein, in the step (A),
as empirical parameters, it is preferable
，
(ii) a Then, the continuity of the membership function can be obtained
；
Namely, it is
。
In position
The probability of the lithology described by the lithology-treating section is
The probability of other lithologies is defined by its average proportion, i.e. the number of occurrences of a lithology divided by the total number, and hence the location
Property of lithology is
The membership degree is as follows:
wherein the content of the first and second substances,
lithology codes described for geological profiles;
is the average proportion of lithology.
The plain format is wal format.
The invention has the beneficial effects that: the lithology information is defined as the file attribute by preprocessing the geological profile vector diagram, so that the lithology information is converted into plain format data with the lithology attribute; extracting plain format data at different positions in the geological profile vector diagram according to a certain network interval to obtain digital data corresponding to the geological profile vector diagram, and providing a basis for digital processing of the vector diagram; the uncertainty of the digitized data of the geological profile vector diagram is quantitatively described and analyzed through a mathematical model of a membership function in fuzzy mathematics, and the geological profile vector diagram is finally digitized, so that the method has the advantages of simplicity and convenience in operation, accuracy and convenience.
Drawings
FIG. 1 is a schematic flow chart of the present invention.
FIG. 2 is a digitized schematic diagram of a geological profile vector map of the present invention.
FIG. 3 is a mathematical model diagram of the membership function of the present invention.
Detailed Description
In order to clearly explain the technical features of the present invention, the following detailed description of the present invention is provided with reference to the accompanying drawings.
As shown in fig. 1-3, a method for digitizing a geological profile vector map, said method comprising the steps of:
s1, preprocessing the geological profile vector diagram to define lithology information as file attributes, and converting the lithology information into plain format data with lithology attributes, wherein the geological profile vector diagram comprises point files, line files and zone files; the clear format data is the attribute value of the point-line-surface file;
s2, extracting plain format data at different positions in the geological profile vector diagram according to a certain network interval to obtain digitized data corresponding to the geological profile vector diagram, wherein the smaller the network interval is, the larger the extracted digitized data quantity is;
s3, quantitatively describing and analyzing uncertainty of the digitized data of the geological section vector diagram by using the concept of a membership function, and finally carrying out digital processing on the geological section vector diagram, wherein the membership function is defined as follows:
in particular, the method comprises the following steps of,
controlling the distance between the position of the profile point and the closer position of the profile point to the drilling hole;
is a parameter to be determined;
is an empirical parameter, represents the reliability of the section at a long distance and has a value range of [0, 1%]。
The method for preprocessing the geological profile vector diagram to define the lithology information as the file attribute so as to convert the lithology information into plain format data with the lithology attribute comprises the following steps:
s1.1, translating the coordinates of the sectional drawing to translate the initial origin of the sectional line to the system origin;
s1.2, unifying the coordinates of a horizontal scale and a vertical scale of the cross-sectional drawing, and converting the coordinates into coordinate data in a meter unit;
s1.3, generalizing the lithology of the profile area file, and respectively marking the lithology as lithology 1, lithology 2, lithology … … and lithology n;
s1.4, combining adjacent communicated zone files with the same lithology;
s1.5, matching the lithological properties of the arc sections of the sections, converting the arc sections of the files in the control area into line files, and setting the properties of the line files into a form of up-down lithological properties;
and S1.6, converting the line file and the section line file containing the lithology information into plain code format.
The method for extracting plain format data at different positions in the geological profile vector diagram according to a certain network interval to obtain the digital data corresponding to the geological profile vector diagram comprises the following steps:
s2.1, setting a horizontal interval parameter and a vertical interval parameter;
s2.2, gridding the section map, calculating the intersection point position of the vertical grid line and the section arc section, matching the lithology of the intersection point, and extracting the intersection point position of the section arc section end point and the control drill hole;
s2.3, processing lithology information of the pinch-out position to check whether the lithologies are connected;
s2.4, calculating the intersection points of the horizontal grid lines and the vertical grid lines and judging the lithology of the intersection points;
and S2.5, converting the data coordinate from two dimensions to three dimensions by combining the geographic coordinate of the section line.
The method comprises the following steps of quantitatively describing and analyzing uncertainty of digitalized data of the geological section vector diagram by utilizing a concept of a membership function, and finally, carrying out digitalized processing on the geological section vector diagram, wherein the digitalized processing comprises the following steps:
s3.1, counting the distances of 2 adjacent drill holes of all geological profiles, and forming an array by the distances
(ii) a Setting confidence
，
Is a significant factor;
s3.2, calculating a corresponding confidence interval under the confidence
To indicate that the distance of 2 adjacent boreholes is
Has a probability of falling into
In the range of (1), wherein,
and
is confidence level
Two confidence limits under;
s3.3, to
And
to solve the undetermined parameter
；
S3.4, calculating the lithologic membership degree of each grid;
and S3.5, outputting the related data in a digital format, wherein the format is ((X, Y, Z), lithology 1 membership degree, lithology 2 membership degree, … … and lithology n membership degree), the lithology 1 membership degree + lithology 2 membership degree + … … + lithology n membership degree =1, and the (X, Y, Z) is a three-dimensional coordinate.
The undetermined parameter
Wherein, in the step (A),
as empirical parameters, it is preferable
，
(ii) a Then, the continuity of the membership function can be obtained
Namely, it is
。
In position
The probability of the lithology described by the lithology-treating section is
The probability of other lithologies is defined by its average ratio, i.e. the number of occurrences of a lithology divided by the total number, so that the degree of membership of the lithology at a location is:
wherein the content of the first and second substances,
lithology codes described for geological profiles;
is lithology
Average ratio of (a).
The plain format is wal format.
The working principle of the digitalization method of the geological profile vector diagram in the embodiment of the invention is as follows: based on a multi-type data function model and an operation method, information data on the geological profile are extracted, operated and processed and analyzed one by one, and finally the geological profile vector diagram is digitized, so that the utilization rate of the geological profile vector diagram is improved, and the information data can be directly imported and utilized as basic data; meanwhile, the information uncertainty of the geological profile vector diagram can be represented through membership, the reliability and the accuracy of information data are described quantitatively, popularization and application are facilitated, and the method and the device can be suitable for various different application scenes.
In the whole technical scheme, the method mainly comprises the following steps: s1, preprocessing the geological profile vector diagram to define lithology information as file attributes, and converting the lithology information into plain format data with lithology attributes; s2, extracting plain format data at different positions in the geological profile vector diagram according to a certain network interval to obtain digital data corresponding to the geological profile vector diagram; and S3, quantitatively describing and analyzing the uncertainty of the digitalized data of the geological section vector diagram by using the concept of the membership function.
Based on the steps of the method, the geological profile vector diagram is completely digitalized, so that the overall utilization rate of the geological profile vector diagram is improved.
The method for preprocessing the geological profile vector diagram mainly comprises the following steps of: translating the coordinates of the sectional drawing to make the initial origin of the sectional line translated to the system origin; unifying the coordinates of a horizontal scale and a vertical scale of the section diagram, and converting the coordinates into coordinate data taking meters as units; the lithology of the generalized profile area file is marked as lithology 1, lithology 2, lithology … … and lithology n; combining adjacent communicated zone files with the same lithology; matching the lithological properties of the section arc segment, converting the arc segment of the control area file into a line file, and setting the properties of the line file into a form of up-down lithological properties; converting the line file and the section line file containing the lithology information into plain code formats; further, the clear format is wal format.
Through the preprocessing of the geological profile vector diagram, point files, line files and area files on the profile diagram are converted into plain code formats with lithological properties, so that a foundation and a source are provided for the acquisition of information data, and the authenticity and operability of data extraction are ensured.
For the step of data extraction, the data in the plain code format is the attribute value of a point-line plane, the data at different positions on the geological profile vector diagram are extracted according to a certain network interval, the smaller the interval is, the larger the extracted data quantity is, and the specific operation steps are as follows: setting a horizontal interval parameter and a vertical interval parameter; gridding the profile, calculating the intersection point position of the vertical grid line and the profile arc section, matching the lithology of the intersection point, and extracting the intersection point position of the end point of the profile arc section and the control drill hole; processing lithology information of the pinch-out position to check whether the lithologies are connected; calculating the intersection point of the horizontal grid line and the vertical grid line and judging the lithology of the intersection point; and converting the data coordinates from two dimensions to three dimensions in combination with the geographic coordinates of the section lines.
Particularly, the three-dimensional coordinate parameters contain more data types and data total amount compared with the two-dimensional coordinate parameters, so that the accuracy is conveniently improved in later-stage application, and the method and the device are suitable for different types of application types.
For the concept quantitative description and the uncertainty of the analysis of the digitalized data of the geological profile vector diagram by utilizing the membership function, the method mainly comprises the steps of counting the distances of 2 adjacent drill holes of all geological profiles, forming an array and setting confidence coefficients; calculating corresponding confidence intervals under the confidence degrees, thereby indicating that the distances of 2 adjacent drill holes have corresponding probabilities of falling into the confidence intervals; solving undetermined parameters of the membership function by using two confidence limits of the confidence coefficient; and then calculating the lithology membership degree of each grid, and outputting related information data in a digital format.
Preferably, the membership function is defined as:
in particular, the method comprises the following steps of,
controlling the distance between the position of the profile point and the closer position of the profile point to the drilling hole;
is a parameter to be determined;
is an empirical parameter, represents the reliability of the section at a long distance and has a value range of [0, 1%]。
On the basis of the continuity of the membership function, solving the parameters to be determined in sequence according to actual conditions by combining empirical parameters; after obtaining the corresponding parameters, at the location
Property of lithology isThe probability of lithology described by the profile is
The probability of other lithologies is defined by its average proportion, i.e. the number of occurrences of a lithology divided by the total number, and hence the location
Property of lithology is
The membership degree is as follows:
wherein the content of the first and second substances,
lithology codes described for geological profiles;
is lithology
Average ratio of (a).
Through the processing of the three method steps, the geological profile vector diagram is finally digitalized, so that the utilization rate of the geological profile vector diagram is improved.
The geological profile vector diagram digitalizing method in the embodiment of the invention can digitize the geological profile vector diagram, thereby improving the utilization rate of the profile diagram; when an underground water model, a geological structure model and a random model are established, the model can be directly imported and utilized as basic data, and moreover, the uncertainty of information in a geological profile vector diagram can also be represented by membership degree, so that the reliability of the data is quantitatively described; finally, the technical scheme can convert the vector diagram with the geographic position into digital data with membership degree, and can be effectively combined with deep learning, artificial intelligence and other methods.
In summary, the geological profile vector diagram digitization method in the embodiment of the present invention is based on a multi-type data function model and an operation method, and performs extraction, operation and processing analysis on information data on the geological profile diagram one by one, and finally digitizes the geological profile vector diagram, so as to improve the utilization rate of the geological profile vector diagram, and can be directly imported and utilized as basic data; meanwhile, the information uncertainty of the geological profile vector diagram can be represented through membership, the reliability and the accuracy of information data are described quantitatively, popularization and application are facilitated, and the method and the device can be suitable for various different application scenes.
The above-described embodiments should not be construed as limiting the scope of the invention, and any alternative modifications or alterations to the embodiments of the present invention will be apparent to those skilled in the art.
The present invention is not described in detail, but is known to those skilled in the art.
Claims (7)
1. A method for digitizing a geological profile vector map, the method comprising the steps of:
s1, preprocessing the geological profile vector diagram to define lithology information as file attributes, and converting the lithology information into plain format data with lithology attributes, wherein the geological profile vector diagram comprises point files, line files and zone files; the clear format data is the attribute value of the point-line-surface file;
s2, extracting plain format data at different positions in the geological profile vector diagram according to a certain network interval to obtain digitized data corresponding to the geological profile vector diagram, wherein the smaller the network interval is, the larger the extracted digitized data quantity is;
s3, quantitatively describing and analyzing uncertainty of the digitized data of the geological section vector diagram by using the concept of a membership function, and finally carrying out digital processing on the geological section vector diagram, wherein the membership function is defined as follows:
in particular, the method comprises the following steps of,
controlling the distance between the position of the profile point and the closer position of the profile point to the drilling hole;
is a parameter to be determined;
is an empirical parameter, represents the reliability of the section at a long distance and has a value range of [0, 1%]。
2. The method as claimed in claim 1, wherein the step of preprocessing the geological profile vector map to define lithology information as file attributes, and converting the lithology information into plain format data with lithology attributes comprises the following steps:
s1.1, translating the coordinates of the sectional drawing to translate the initial origin of the sectional line to the system origin;
s1.2, unifying the coordinates of a horizontal scale and a vertical scale of the cross-sectional drawing, and converting the coordinates into coordinate data in a meter unit;
s1.3, generalizing the lithology of the profile area file, and respectively marking the lithology as lithology 1, lithology 2, lithology … … and lithology n;
s1.4, combining adjacent communicated zone files with the same lithology;
s1.5, matching the lithological properties of the arc sections of the sections, converting the arc sections of the files in the control area into line files, and setting the properties of the line files into a form of up-down lithological properties;
and S1.6, converting the line file and the section line file containing the lithology information into plain code format.
3. The method for digitizing a geological profile vector map according to claim 1, wherein the step of extracting plain format data at different positions in the geological profile vector map according to a certain network interval to obtain digitized data corresponding to the geological profile vector map comprises the steps of:
s2.1, setting a horizontal interval parameter and a vertical interval parameter;
s2.2, gridding the section map, calculating the intersection point position of the vertical grid line and the section arc section, matching the lithology of the intersection point, and extracting the intersection point position of the section arc section end point and the control drill hole;
s2.3, processing lithology information of the pinch-out position to check whether the lithologies are connected;
s2.4, calculating the intersection points of the horizontal grid lines and the vertical grid lines and judging the lithology of the intersection points;
and S2.5, converting the data coordinate from two dimensions to three dimensions by combining the geographic coordinate of the section line.
4. The method as claimed in claim 1, wherein the concept of membership function is used to quantitatively describe and analyze the uncertainty of the digitized data of the geological section vector diagram, and finally the method for digitizing the geological section vector diagram comprises the following steps:
s3.1, counting the distances of 2 adjacent drill holes of all geological profiles, and forming an array by the distances
(ii) a Setting confidence
，
Is a significant factor;
s3.2, calculating a corresponding confidence interval under the confidence
To indicate the distance of 2 adjacent boreholes
Probability falls into
In the range of (1), wherein,
and
is confidence level
Two confidence limits under;
s3.3, to
And
to solve the undetermined parameter
；
S3.4, calculating the lithologic membership degree of each grid;
and S3.5, outputting the related data in a digital format, wherein the format is ((X, Y, Z), lithology 1 membership degree, lithology 2 membership degree, … … and lithology n membership degree), the lithology 1 membership degree + lithology 2 membership degree + … … + lithology n membership degree =1, and the (X, Y, Z) is a three-dimensional coordinate.
5. The method of claim 4, wherein the method comprises: the undetermined parameter
Wherein
As empirical parameters, it is preferable
(ii) a Then, the continuity of the membership function can be obtained
Namely, it is
。
6. The method of claim 4, wherein the method comprises: in position
The probability of the lithology described by the lithology-treating section is
The probability of other lithologies is defined by its average proportion, i.e. the number of occurrences of a lithology divided by the total number, and hence the location
Property of lithology is
The membership degree is as follows:
wherein the content of the first and second substances,
lithology codes described for geological profiles;
is lithology
Average ratio of (a).
7. A method of digitizing a geological profile vector image according to claim 1, characterized in that: the plain format is wal format.
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| CN111192359A (en) * | 2019-12-30 | 2020-05-22 | 核工业北京地质研究院 | Method for extracting lithology data of drill hole by utilizing geological profile drill hole space track form |
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