CN106372815A - Digital elevation model-based mineral resources reserve evaluation method and application - Google Patents
Digital elevation model-based mineral resources reserve evaluation method and application Download PDFInfo
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Abstract
The invention discloses a digital elevation model-based mineral resources reserve evaluation method and application. The method includes the following steps that: ore body prospecting result data are collected; the demarcation point spatial data of an upper interface, a lower interface and end portion boundary lines are analyzed and extracted; the triangulated interpolating grid spatial data of the top surface and bottom surface of the ore body are extracted based on a digital elevation model; the average value of the vertical thickness of the ore body in a vertical direction is estimated according to the triangulated interpolating grid elevation data of the top surface and bottom surface of the ore body; the area of the edge curve horizontal projection region of the ore body is estimated through using a GIS spatial analysis system; and mineral resource reserves are evaluated based on the vertical thickness of the ore body in the vertical direction and the area of the area of the edge curve horizontal projection region. The invention also provides an ore body and surrounding rock contact surface decomposing and combination method, an ore body and surrounding rock demarcation point spatial data extraction method and an ore body shape digital elevation model establishing method. With the methods adopted, the evaluation precision and speed of the mineral resource reserves are obviously improved.
Description
Technical field
The present invention relates to resource reserve appraisal procedure in mineral exploration technical field, more particularly, to one kind are based on digital elevation
Model is combined with expertise experience, gives full play to the Reserves Assessment of Mineral Resources method of Computer Applied Technology advantage and answers
With.
Background technology
More accurate Reserves Assessment of Mineral Resources method is for ore resource prognosis, resources and reserves estimation, resource reserve
Dynamic detection and the examination of mining engineering amount, illegal mining cause resource reserve to destroy the development of geological work and the one-tenth such as value assessment
Effect is significant.
However, because ore body is in often to lie concealed the buried underground of state it is known that Ore body morphology information is extremely limited, with normal at present
Directly carry out Reserves Assessment of Mineral Resources often to hang with ore body real resource reserves with the simple geometry form that discrete data builds
Very larger, accordingly, it would be desirable to science improvement be carried out to Reserves Assessment of Mineral Resources method using modern advanced.
Digital elevation model (digital elevation model), abbreviation dem, is real by limited altitude data
Now (i.e. the digital expression of topographical surface form) is simulated to landform Surface Digitizing, be with one group of orderly array of values form table
Show a kind of actual ground model of ground elevation.Digital elevation model is provided with resource reserve assessment for the modeling of ore body digital morphological
Mathematical method and research direction.
Because geologic body containing ore deposit is under the dynamic geologic processes of earth long-term evolution, how to produce with stratiform, like lamellar morphologies
Go out, according to general ore body top, lower interface and end boundary line spatial data feature, with digital elevation in modern scientific and technical result
Model carries out what Reserves Assessment of Mineral Resources can be achieved on.
By to the Ore body morphology spatial data analysis extracted, research, setting up the mathematical model of Ore body morphology, thus right
The resource reserve of ore body carries out Scientific evaluation, has become as digital geological important research direction.
At present, also do not have Applied Digital elevation model to carry out Resource management with reference to expertise in prior art to comment
Estimate.
Content of the invention
Invention provides a kind of Reserves Assessment of Mineral Resources method based on digital elevation model and application.Above-mentioned for realizing
Purpose, the present invention takes the technical scheme to be: the invention provides a kind of Reserves Assessment of Mineral Resources based on digital elevation model
In method, ore body decomposes, with country rock contact surface science, the method combining with model data, and the ore body of complex shape is demarcated with country rock
Space of points data extracts, and Ore body morphology Law of DEM Data storehouse is set up in group merging, and modeling for computer digit provides
May.
A kind of Reserves Assessment of Mineral Resources method based on digital elevation model that the present invention provides, the method adopts following
Operating procedure.
(1) collect ore body prospecting results data, including geologic survey, Geophysical-chemical, trenching exploratory shaft sinking, probing probing, digging work
Journey etc. reconnoitres the Geological Achievements data of means acquisition.
(2) analyze and extract ore body top, lower interface and end boundary line separation spatial data, including ore body with enclose
Rock separation spatial data extracts, classifies, combination, the drawing of separation spatial data, discrete sex determination, Ore body morphology digital elevation
Model database is set up.
(3) it is based on digital elevation model and extracts ore body top, bottom curved surface triangle interpolation grid points altitude data, including foundation
The top of ore body, bottom curved space data triangulation pessimistic concurrency control are set up qualifying networking and are processed, in ore body top, bottom surface model triangle
Slotting grid points altitude data is extracted.
(4) according to ore body top, the vertical vertical thickness average value of bottom curved surface triangular grid point height data estimation ore body, bag
Include ore body upper interface surface and the estimation of lower interface altitude data average, and then estimate the vertical vertical thickness average value of ore body.
(5) use gis spatial analysis system estimation ore body side curve level projected area area, throw including ore body side curve model data
Shadow drawing, graphics process and Area computing.
(6) according to the vertical vertical thickness average value of ore body and side curve level projected area area assessment Resource management,
It is multiplied including by vertical with ore body for the ore body estimating side curve level projected area area value vertical thickness average value, in conjunction with ore deposit
Body body weight, grade data evaluate the Resource management of ore body.
Present invention also offers above-mentioned Reserves Assessment of Mineral Resources method employs the application in resource reserve assessment in mine.
The present invention is based on digital elevation model, can fully in extraction and exploration achievement data reflection Ore body morphology space number
It is believed that breath, discrete space data is carried out by trigonal lattice networking process by the modeling of data elevation, effectively utilizes these space numbers
It is believed that breath, thus realize the Reserves Assessment of Mineral Resources method that Reserves Assessment of Mineral Resources result is more accurate, with current employing
Compare, the appraisal procedure precision that the present invention provides is significantly improved with speed.
Brief description
Fig. 1 is decomposed and model data combination diagram with country rock contact surface for the ore body that the present invention provides.
The Reserves Assessment of Mineral Resources method flow diagram that Fig. 2 provides for the present invention.
Fig. 3 extracts flow chart for the ore body separation spatial data providing in embodiment of the present invention.
Fig. 4 extracts stream for the ore body top providing in embodiment of the present invention, bottom curved surface triangle interpolation grid points altitude data
Cheng Tu.
Fig. 5 estimates flow chart for the vertical vertical thickness average value of ore body providing in embodiment of the present invention.
Fig. 6 is assessed with resource reserve for the ore body side curve level projected area area reckoning providing in embodiment of the present invention
Flow chart.
Fig. 7 is the working area terrain and geologic map collected in the embodiment of the present invention.
Fig. 8 is the working area exploitation engineering plane graph collected in the embodiment of the present invention.
Fig. 9 is that in the embodiment of the present invention, expert system analysis detect the profile applied during achievement data.
Figure 10 is to employ ore body interface and boundary line separation combination scattergram in the embodiment of the present invention.
Figure 11 is to employ ore body bottom surface triangulation initial model in the embodiment of the present invention.
Figure 12 is to employ ore body bottom surface model data triangle interpolation grid bit map/bitmap in the embodiment of the present invention.
Figure 13 is to employ ore body bottom surface model data solid latice in the embodiment of the present invention.
Specific embodiment
Typically in Reserves Assessment of Mineral Resources, it is according to the various ore body local thickness reconnoitring means acquisition, by engineering
The volume to estimate each piece of section for the scope that position divides, then add up out ore body cumulative volume, because the method is using limited
By ore body simple geometry modelling it is impossible to reflect the fluctuations of Ore body morphology, still further aspect is the method to discrete data
All carry out on plane figure, error is big and wastes time and energy.In view of deficiency of the prior art, a kind of present invention base of offer
In Reserves Assessment of Mineral Resources method and the application of digital elevation model, geology expert system analysis Geological Prospecting Achievements can be passed through
Data, Ore body morphology map data, the ore body separation spatial data according to extracting sets up Ore body morphology digital elevation model,
With calculus theoretical method, break the whole up into parts and estimate each triangle interpolation grid point height of ore body, then overall view Ore body morphology,
Estimate the vertical vertical thickness average value of ore body, and then evaluate ore body resource reserve, compare with existing method estimated speed with
Precision all improves.
The present invention provide a kind of based in the Reserves Assessment of Mineral Resources method of digital elevation model, provide firstly one
Plant the method that ore body is decomposed and model data combines, such as Fig. 1 with country rock contact surface, the method includes: ore body is contacted with country rock
Face is decomposed into top, lower interface and end boundary line, by the separation spatial data extracting on upper interface surface and end boundary line
On the separation spatial data that extracts be combined into ore body top surface model data, empty by the separation extracting in lower interface
Between the separation spatial data that extracts in data and end boundary line be combined into ore body bottom surface model data, by the boundary line of end
The ore body separation spatial data extracting is combined into ore body side curve model data, and sets up Ore body morphology digital elevation with this
Model database.
A kind of Reserves Assessment of Mineral Resources method based on digital elevation model that the present invention provides, such as Fig. 2, the method bag
Include:
S1, collects ore body prospecting results data；
S2, analyzes and extracts ore body top, lower interface and end boundary line separation spatial data；
S3, extracts ore body top, bottom curved surface triangle interpolation grid points altitude data based on digital elevation model；
S4, according to ore body top, the vertical vertical thickness average value of bottom curved surface triangular grid point height data estimation ore body；
S5, with gis spatial analysis system estimation ore body side curve level projected area area；
S6, according to the vertical vertical thickness average value of ore body and side curve level projected area area assessment Resource management.
In described step s2, analyze and extract ore body top, lower interface and end boundary line separation spatial data, such as
Fig. 2, this step includes:
1) geology expert is according to Professional knowledge and practical experience, ore body is detected adopted geologic survey, Geophysical-chemical work,
Mineral exploration engineering, mining operation achievement data carry out systematic analysiss；
2) geology expert extracts according to Ore body morphology and detects the engineering observing and controlling space of points number with country rock contact surface in achievement data
According to, and extrapolate the supposition space of points data in ore body top, lower interface and end boundary line, composition ore body and country rock are demarcated
Basic separation spatial data；
3) geology expert carries out sort merge to ore body and country rock separation spatial data, and paints respectively with gis editing system
The separation combination scattergram in ore body top processed, lower interface and end boundary line, to judge separation spatial spreading；
4) when separation discreteness cannot meet Reserves Assessment of Mineral Resources required precision, need to draw further reflection
The comprehensive map of Ore body morphology, by geology expert system analysis, extracts adding of ore body top, lower interface and end boundary line
Close separation spatial data；
5) set up Ore body morphology Law of DEM Data storehouse using the basic separation of ore body with encryption separation spatial data.
In described step s3, ore body top, bottom curved surface triangle interpolation grid point height number are extracted based on digital elevation model
According to, such as Fig. 3, this step includes:
1) using dem analysis system, Ore body morphology model data is set up with ore body top, bottom surface triangulation initial model, bag
Include the basic model using ore body basic separation spatial data structure, the space of points of demarcating using the basic separation of ore body and encryption
Data builds composite model jointly；
2) respectively triangulation net generation, whole is carried out to the ore body top set up, bottom curved surface initial model using dem analysis system
Reason, interpolation gridding are processed, thus setting up Ore body morphology spatial data triangular grid model；
3) respectively by the triangular grid point height data output in ore body top, bottom surface model be clear data file or attribute
Metafile.
In described step s4, according to ore body top, the vertical vertical thickness of bottom curved surface triangular grid point height data estimation ore body
Degree meansigma methodss, such as Fig. 4, this step includes:
1) according to ore body top, bottom curved surface triangle interpolation grid points altitude data, with calculus theoretical method respectively to estimating
Ore body top, the elevation meansigma methodss (h of lower interfaceOn=1/m×∑hi、hUnder=1/n×∑hi) ；
2) the mean height path difference according to ore body top, lower interface, estimates the vertical vertical thickness average value (l=h of ore bodyOn–
hUnder).
In described step s5, estimate ore body side curve level projected area area, such as Fig. 5 with gis spatial analysis system,
This step includes:
1) with gis spatial analysis system, ore body side curve model data in Ore body morphology Law of DEM Data storehouse is entered
Row projects, charts, line, and sets linear light cunning with reference to the mesh spacing that ore body top, bottom surface model gridization adopt when processing
Encryption distance carries out smooth treatment, generates the ore body side curve of closing；
2) with gis spatial analysis system, ore body side curve level projected area area is estimated.
In described step s6, according to the vertical vertical thickness average value of ore body and side curve level projected area area assessment ore deposit
Produce resource reserve, this step includes:
1) it is multiplied by ore body side curve level projected area area with the vertical vertical thickness average value of ore body, estimate ore body volume；
2) according to ore body body weight and grade data, ore amount and the Hubeiwan total amount of ore body Mineral Resource reserves are evaluated.
In order that the object of the invention and advantage become more apparent, with reference to embodiments the present invention is carried out specifically
Bright.
Provide in the embodiment of the present invention and a kind of ore body resource reserve assessment side is employed based on the mine of digital elevation model
The application of method, is described in detail below the assessment that this method employs resource reserve in Zhumadian prefecture, Henan province city limestone mining area ore body
Process.
1st, collection of data.
Fig. 6, Fig. 7 are working area terrain and geologic map collected by geology expert, working area exploitation engineering plane graph respectively,
These maps constitute this exploitation ore body and detect achievement data.
2nd, data is extracted.
Fig. 8 is that geology expert carries out systematic analysiss, assisted mapping to detecting achievement data, by the systematic analysiss of expert,
Think that landform measuring control point can not deduct earth's surface using landform observing and controlling point height and cover directly as employing ore body upper interface surface measuring control point
The 4th of lid is outwash average thickness values (0.75 meter), extrapolates and employs ore body upper interface surface supposition space of points data；Think
Do not expose in mining engineering and employ ore body top, at lower interface, mining engineering measurement point can be directly as employing ore body
Lower interface or the measuring control point in end boundary line；Mining engineering exposes ore body top, at lower interface, be according to ore deposit in mining hole
Body and country rock boundary line measuring control point and orebody geology occurrence speculate that ore body lower interface extends situation to earth's surface, underground, thus calculating
Set out to speculate the spatial data of point with ore body top, lower interface or end boundary line.
The supposition point extrapolated the mining engineering measuring control point extracting in above-mentioned analysis and by geology expert, is made
Substantially demarcate for Ore body morphology ...
Basic for Ore body morphology separation is classified and spatial organization, sets up ore body top, interface and end boundary line respectively and divide
Boundary's space of points data.
Fig. 9 is to divide ore body top, lower interface and end boundary line separation interblock space data with gis editing system
Zu He not chart, wherein (1) is to employ ore body upper interface surface, basic separation scattergram in the boundary line of end；(2) it is to employ ore body
Basic separation scattergram in lower interface, end boundary line；(3) it is basic separation distribution in the boundary line of end.
Geology expert carries out having discrete sex determination it is believed that mining engineering is exposed employs ore body portion to above-mentioned basic point scattergram
Point, engineering measuring control point and end speculate that dot spacing is excessive and estimate job requirement further it is impossible to meet.
Geology expert proceeds to employ Ore body morphology analysis, depicts a plurality of log sheet, adopting in this task
Miner's journey is exposed to employ and is supplemented encryption separation between ore body position measuring control point and end supposition point, and has extrapolated these encryptions
The spatial data of separation.
Basic for aforementioned ore body separation, encryption separation are carried out spatial data combination according to position, forms shape information
The more complete model data employing Ore body morphology, is set up with this and employs Ore body morphology Law of DEM Data storehouse.
3rd, digital modeling.
Figure 10 is to be set up at the beginning of the surface triangulation of ore body bottom to employing Ore body morphology model database using dem analysis system
Beginning model, and Ore body morphology data model is arranged, delete the triangulation network that marginal error connects.Employ Ore body morphology elevation
Mathematical model is jointly to be built by basic separation and encryption separation spatial data, and therefore, that is set up employs ore body bottom song
Face triangulation initial model is digital composite elevation mould.
Figure 11 is to carry out interpolation grid using dem analysis system to above-mentioned ore body bottom surface triangulation initial model of employing
Change is processed, thus establish employing ore body bottom curved space data triangular grid model.
Figure 12 is using dem analysis system, the ore body bottom curved space data triangular grid model of employing set up to be carried out
Stereomapping, can be clearly observed the continuous fluctuations situation employing ore body bottom curved surface landform.
Employ ore body bottom curved surface triangular grid modeling method using dem analysis system according to above-mentioned, set up and employ ore body top
Curved space data triangular grid model.
Ore body top, the height in the curved space data triangular grid digital elevation model of bottom will be employed using dem analysis system
Number of passes evidence is output as plain text file it is also possible to ore body top, bottom curved space data triangular grid digital elevation mould will be employed
Altitude data Direct Mark in type is charted and is output as mounting the metafile of attribute.
4th, thickness estimation.
Process software with clear data or gis spatial analysis system employs ore body top, bottom circle it is possible to estimate
Face dispersed elevation value is respectively 116.45 meters and 142.41 meters.
Thus the vertical vertical thickness average value of ore body of employing estimating is 142.41-116.45=25.96 rice.
5th, area reckoning.
According to aforementioned by basic separation, plus employing in Ore body morphology Law of DEM Data storehouse of combining of separation
Side curve model data, carries out floor projection drawing with gis editing system, and with point connecting line and smooth treatment becomes closing
Ore body side curve pel, and estimate its area for 36417 square metres with gis spatial analysis system.
6th, resource reserve assessment.
According to above-mentioned estimate employ the vertical vertical thickness average value of ore body and horizontal projected area, in conjunction with ore body chats
The body weight value of stone be 2.57 tons/cubic metre, evaluate employed in ore body Resource management ore amount be 36417 square metres ×
25.96 meters × 2.60 ton/cubic metre=2458002 ton.
Using appraisal procedure commonly used in the prior art, working area is employed with ore body volume estimation result and has carried out statistics remittance
Always, shown in see table.
By upper table statistical result it is known that evaluating working area ore body using the method commonly used at present employed mineral resources
Reserves ore amount is 2301735 tons, and the Reserves Assessment of Mineral Resources result comparing the inventive method decreases 2458002-
2301735=156267 ton, difference ratio is 156267 ÷ 2458002=6.35 %, and this is the mineral resources storage due to commonly using at present
Amount appraisal procedure cannot simulate continuous rolling shape between ore body separation change cause it is seen that the present invention employs ore deposit in mine
Advantage in the assessment of body resource reserve is located, and estimation result is more accurate, reliable.
It should be pointed out that above-described embodiment only ultimate principle of the illustrative present invention and operational approach, make this area
Technical staff is more fully understood the present invention, but it is not for limiting the present invention, and any those skilled in the art are not taking off
In the spirit and scope of the present invention, possible variation and modification can be made, therefore protection scope of the present invention should be with
The scope that the claims in the present invention are defined is defined.
Claims (4)
1. a kind of Reserves Assessment of Mineral Resources method based on digital elevation model is it is characterised in that this method provide one kind
Ore body decomposes, with country rock contact surface science, the method combining with model data, and the ore body contact surface of complex shape is decomposed into
Portion, lower interface and end boundary line, and to the configuration of separation spatial data, combination in interface, boundary line, thus constructing reflection ore deposit
Body top, bottom curved surface and side curve model data, set up Ore body morphology Law of DEM Data storehouse with this.
2. a kind of Reserves Assessment of Mineral Resources method based on digital elevation model is it is characterised in that the method includes following step
Rapid:
(1) collect ore body prospecting results data；
(2) geology analysis expert extract ore body top, lower interface and end boundary line separation spatial data；
(3) it is based on digital elevation model and extract ore body top, bottom curved surface triangle interpolation grid points spatial data；
(4) according to ore body top, the vertical thickness average value of bottom curved surface triangular grid point height data estimation ore body；
(5) use gis spatial analysis system estimation ore body side curve level projected area area；
(6) according to the vertical thickness average value of ore body and side curve level projected area area assessment Resource management.
3. a kind of Reserves Assessment of Mineral Resources method based on digital elevation model according to claim 2, its feature exists
In: described step (2) geology analysis expert simultaneously extracts ore body top, lower interface and end boundary line separation spatial data,
Specifically include:
A) geology expert determines the interface of ore body and country rock contact surface according to Professional knowledge and practical experience, extracts ore body and divides
Boundary's space of points data；
B) geology expert is to ore body separation spatial database sort merge, and its spatial spreading of judgement that charts；
C) when separation discreteness cannot meet Reserves Assessment of Mineral Resources required precision, geology expert system analysis simultaneously extract
Separation spatial data is encrypted on ore body top, lower interface and end boundary line；
D) set up Ore body morphology Law of DEM Data storehouse using the basic separation of ore body with encryption separation spatial data.
4. a kind of Reserves Assessment of Mineral Resources method based on digital elevation model described in claim the 1-3, its feature exists
In: application in Reserves Assessment of Mineral Resources for any one method.
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| CN107103153A (en) * | 2017-05-17 | 2017-08-29 | 南怀方 | A kind of mineral resources consumption appraisal procedure based on three-dimensional laser scanning technique |
| CN109286607A (en) * | 2018-08-07 | 2019-01-29 | 中国石油天然气集团公司 | The method that digital elevation model is encrypted based on mapping control point outcome table |
| CN113077546A (en) * | 2021-04-14 | 2021-07-06 | 中国地质大学（武汉） | Automatic search ellipsoid setting method for mineral resource reserve estimation |
| CN117197398A (en) * | 2023-11-07 | 2023-12-08 | 中国电建集团昆明勘测设计研究院有限公司 | Statistical method, device, equipment and storage medium of mine resource model |
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Cited By (8)
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| CN107103153A (en) * | 2017-05-17 | 2017-08-29 | 南怀方 | A kind of mineral resources consumption appraisal procedure based on three-dimensional laser scanning technique |
| CN107103153B (en) * | 2017-05-17 | 2023-09-19 | 南怀方 | Mineral resource consumption evaluation method based on three-dimensional laser scanning technology |
| CN109286607A (en) * | 2018-08-07 | 2019-01-29 | 中国石油天然气集团公司 | The method that digital elevation model is encrypted based on mapping control point outcome table |
| CN109286607B (en) * | 2018-08-07 | 2020-11-03 | 中国石油天然气集团有限公司 | Method for encrypting digital elevation model based on surveying and mapping control point achievement table |
| CN113077546A (en) * | 2021-04-14 | 2021-07-06 | 中国地质大学（武汉） | Automatic search ellipsoid setting method for mineral resource reserve estimation |
| CN113077546B (en) * | 2021-04-14 | 2022-03-15 | 中国地质大学（武汉） | Automatic search ellipsoid setting method for mineral resource reserve estimation |
| CN117197398A (en) * | 2023-11-07 | 2023-12-08 | 中国电建集团昆明勘测设计研究院有限公司 | Statistical method, device, equipment and storage medium of mine resource model |
| CN117197398B (en) * | 2023-11-07 | 2024-02-09 | 中国电建集团昆明勘测设计研究院有限公司 | Statistical method, device, equipment and storage medium of mine resource model |
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