CN110852551B - Stock yard reserve calculation method - Google Patents
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- CN110852551B CN110852551B CN201910832087.1A CN201910832087A CN110852551B CN 110852551 B CN110852551 B CN 110852551B CN 201910832087 A CN201910832087 A CN 201910832087A CN 110852551 B CN110852551 B CN 110852551B
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Abstract
The invention relates to the technical field of engineering geological exploration, in particular to a stock ground reserve calculation method, and aims to provide a stock ground reserve calculation method; the technical scheme is as follows: a stock yard reserve calculation method comprises the following steps: drawing a stock yard three-dimensional entity model diagram according to the stock yard planning plan; drawing a stripping surface set and an excavation surface set according to an engineering geological profile of a stock ground; cutting the three-dimensional model map of the stock ground entity by the stripping surface set and the excavation surface set to obtain a stripping body set, an excavation body set and a residual body set; and calculating the stock ground reserves according to the volumes of the stripping body set, the excavation body set and the residual body set. The method and the device draw the three-dimensional model of the stock ground according to the stock ground engineering drawing, calculate the stock ground reserves through the three-dimensional model, and have the characteristics of quick and accurate calculation and wide application range.
Description
Technical Field
The invention relates to the technical field of engineering geological exploration, in particular to a stock ground reserve calculation method.
Background
The construction of hydroelectric and hydraulic engineering needs a large amount of natural building materials, and the engineering site is located in high mountain and canyon regions, so that the transportation is very inconvenient, and the long-distance transportation cost is high. Subject to these factors, it is generally necessary to select a suitable yard for providing natural building materials in the vicinity of the site of the hydroelectric project. In the stock ground survey, the finding of the stock ground reserves is directly related to whether enough building materials can be provided for engineering construction, so the calculation of the stock ground reserves is very important work.
In the survey regulations for natural building materials for hydropower engineering (DL/T5388-2007), it is stipulated that the calculation of stock ground reserves should be checked by selecting an average thickness method, a parallel section method or a triangular method according to topographic and geological conditions, survey grades and survey point arrangement conditions and selecting another method. The average thickness method is characterized in that the total area in the reserve range is multiplied by the thickness to calculate the volume of the stock ground, the parallel section method and the triangle method divide the stock ground into a plurality of segmented blocks, then the area of a two-dimensional plane is multiplied by the height to calculate the volume of each block, and finally the volumes of the blocks are added to obtain the volume of the stock ground. Therefore, the existing stock ground reserve calculation method has different applicable conditions, specifically: the average thickness method is mainly suitable for a stock ground with gentle topography, stable useful layer thickness and uniform arrangement of exploration points, or a stock ground with low exploration level and fewer exploration points; the parallel section method is suitable for a stock ground with relief and variable useful layer thickness; the triangle method is suitable for a stock ground with irregularly arranged exploration points.
In general, the three methods have the following problems in use: the stock ground is an irregular geologic body, the topographic relief change is large, the three methods calculate the volume of the stock ground by multiplying the area of a two-dimensional plane by the height, the volume is greatly influenced by factors such as topographic and geological conditions, the arrangement distance of exploration points, the thickness change of a useful layer and the like, the calculation precision is low, and a large error exists in the result. Meanwhile, another method is needed for checking after the stock ground reserves are calculated, but the three methods have different applicable conditions, and the other two methods are not necessarily suitable for the stock ground reserves needing investigation; therefore, it is difficult to check the accuracy of the stock yard reserve calculation results by the other two methods. And the three calculation methods are complicated and time-consuming.
Disclosure of Invention
Aiming at the technical problems of large error and complicated calculation of the conventional stock ground reserve calculation method, the invention provides the stock ground reserve calculation method which can accurately and quickly calculate and check the stock ground reserve and is suitable for different topographic and geological conditions.
The invention is realized by the following technical scheme:
the method comprises the following steps:
according to the stock ground planning plan, carrying out rectangular frame selection on the stock ground planning plan to obtain a stock ground contour map;
giving an elevation value to the rectangular frame to obtain a stockyard bottom boundary control point set, wherein the elevation value is smaller than the lowest value of the excavation elevation value;
setting the point spacing in the direction of the contour line X, Y according to the required topographic precision, comparing the precision of the stock ground surface set and the point set graph with the precision of the stock ground surface set and the point set graph required by calculation, and if the precision is lower than the required precision, resetting the point spacing in the direction X, Y to obtain the stock ground surface set and the point set;
performing three-dimensional modeling according to the stock yard bottom boundary control point set, the stock yard surface set and the point set to obtain a stock yard three-dimensional entity model diagram;
according to an engineering geological profile of a stock ground, extracting a stripping line set from the engineering geological profile of the stock ground, and performing two-dimensional drawing according to the stripping line set to obtain stripping surface sets, wherein the quantity of the stripping surface sets is the same as that of the engineering geological profile of the stock ground;
Extracting an excavation line set from the engineering geological profile map of the stock ground according to the engineering geological profile map of the stock ground, and performing two-dimensional drawing according to the excavation line set to obtain an excavation surface set, wherein the number of the excavation surface sets is the same as that of the engineering geological profile map of the stock ground;
cutting the three-dimensional model map of the stock ground entity by the stripping surface set and the excavation surface set to obtain a stripping body set, an excavation body set and a residual body set;
and calculating the stock ground reserves according to the volumes of the stripping body set, the excavation body set and the residual body set.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the method, the stock ground is divided into the stripping body set, the excavation body set and the residual body set by establishing the stock ground three-dimensional model and introducing the stripping surface set and the excavation surface set, and then the volume of the stock ground is inquired by directly using three-dimensional software, so that the calculation result is accurate, and the precision is high. The method avoids the calculation error caused by the factors such as the thickness change of the useful layer under the topographic and geological conditions when the volume of the three-dimensional stock ground is calculated by multiplying the area of the two-dimensional plane by the height in the existing method.
2. The method adopts the three-dimensional model to calculate the volume of the stock ground, is not influenced by factors such as topographic relief, exploration point arrangement distance and the like, avoids the difficulty that the existing method has different applicable conditions respectively, and can be applicable to different topographic and geological conditions. Meanwhile, the method can be used for checking the accuracy of the stock ground reserves calculated by the conventional method and provides technical support for the reserve calculation and checking.
3. According to the method, the volumes of the stripping body, the excavation body and the residual body are directly inquired through establishing the three-dimensional model, compared with the existing method, the stock ground is divided into a plurality of segmented blocks, then the volume of each block is calculated by multiplying the area of a two-dimensional plane by the height, finally the volumes of the blocks are added to obtain the volume of the three-dimensional stock ground, and then the volumes of the stripping body, the excavation body and the residual body are calculated by utilizing the stripping line and the excavation line, so that the complex calculation is avoided, and the time is saved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
FIG. 1 is a flow chart of a testing method of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.
Examples
In this embodiment, the stock ground reserve calculation is performed by using AutoCAD, Surfer, and ANSYS as an example, and the method includes the following steps:
And (3) actually measuring the topography of the stock ground, and drawing a complete stock ground planning plan and a stock ground engineering geological profile (a plurality of profiles are generally arranged according to the scale of the stock ground) by using AutoCAD.
Opening the stock yard planning plan in AutoCAD, hiding other lines except contour lines, selecting a stock yard research range by using a rectangular frame, and cutting off parts except the rectangular frame; and after the rectangular frame is hidden, outputting the contour line as a 'dgx.txt' file by using a geological plug-in secondarily developed aiming at the AutoCAD software to obtain a stock yard contour map. It should be noted that the contour map can be conveniently, quickly and accurately obtained by selecting the rectangular frame.
And (3) opening the 'dgx.txt' file by using Surfer software, setting a point distance in the direction of X, Y according to required terrain precision (the contour is smooth and the block does not appear), and exporting and storing the file as a 'dgx.grd' file.
Using Surfer software to open the dgx.grd file and checking whether the precision of the obtained topographic surface map meets the requirement; if the precision is too low, the point distance (distance between horizontal planes of the contour lines) in the direction of X, Y is reset until the precision requirement is met, and then the file of 'dgx.grd' meeting the precision requirement is saved as a file of 'dgxzz.dat' to obtain the surface set and the point set of the stock ground.
Surfer was used to open the "dgxzz.dat" file and then convert it to a "dgxok.dat" file that could be read in ANSYS software.
And giving an elevation value lower than the lowest excavation elevation to the rectangular frame, and outputting the rectangular frame as a' jxk.
Opening the dgxok.dat file by using ANSYS to obtain a stock ground surface and a point set; then opening the jxk.txt file to obtain a stock yard bottom boundary control point set; the stock ground three-dimensional solid model is obtained by the point → line → face → body (three-dimensional modeling) operation in ANSYS software.
Opening the stock ground engineering geological section by using AutoCAD, and then outputting the stripping lines in each section as files of ' blx1.txt ', ' blx2.txt '. ' blx '. txt ' by using geological plug-ins to obtain a stripping line set, wherein '. X ' is the number of the stock ground engineering geological section.
Opening the stock yard engineering geological profile by using AutoCAD, and then outputting excavation lines in each profile as ' kwx1.txt ', ' kwx2.txt '. ' kwx ' txt ' files in sequence by using geological plug-ins to obtain an excavation line set, wherein ' x ' is the number of the stock yard engineering geological profile.
Using ANSYS to form the "blx 1. txt", "blx 2. txt". -. blx. txt "file by a dot → line → face (two dimensional drawing) operation into a set of peeled faces; and then, the 'kwx1. txt' file and the 'kwx2. txt' file are processed by point → line → surface operation to form an excavation surface set.
And using the surface cutting function of ANSYS software to cut the stock ground three-dimensional entity model into a stripping body set, an excavation body set and a residual body set by using the stripping surface set and the excavation surface set.
And respectively inquiring and calculating the volumes of the stripping body set, the excavation body set and the residual body set by using a volume inquiry function of ANSYS software, namely finishing the calculation of the stock ground reserves (the sum of the volumes of the excavation body sets is the stock ground reserves).
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A stock yard reserve calculation method is characterized by comprising the following steps:
drawing a stock yard three-dimensional entity model diagram according to the stock yard planning plan;
drawing a stripping surface set and an excavation surface set according to an engineering geological profile of a stock ground;
cutting the three-dimensional model map of the stock ground entity by the stripping surface set and the excavation surface set to obtain a stripping body set, an excavation body set and a residual body set;
Calculating the stock ground reserves according to the volumes of the stripping body set, the excavation body set and the residual body set;
the drawing of the stock ground three-dimensional entity model diagram comprises the following steps:
carrying out rectangular frame selection on the stock yard planning plan to obtain a stock yard contour map;
giving an elevation value to the rectangular frame to obtain a stock yard bottom boundary control point set;
setting the point distance in the direction of the contour line X, Y according to the required topographic precision to obtain a stock ground surface set and a point set;
performing three-dimensional modeling according to the stock yard bottom boundary control point set, the stock yard surface set and the point set to obtain a stock yard three-dimensional entity model diagram;
the set of exfoliated faces is obtained by the steps of:
extracting a stripping line set from the stock ground engineering geological profile,
and performing two-dimensional drawing according to the stripping line set to obtain the stripping surface set.
2. The stock ground reserve calculation method according to claim 1, characterized in that: the elevation value is smaller than the lowest value of the excavation elevation value.
3. The stock ground reserve calculation method according to claim 2, characterized in that: comparing the precision of the stock ground surface set and the point set graph with the precision of the stock ground surface set and the point set graph required by calculation, and if the precision is lower than the required precision, resetting the point distance in the direction of X, Y.
4. The stock yard reserve calculation method according to claim 1, characterized in that; the number of the stripping surface sets is the same as that of the stock ground engineering geological profile maps.
5. The stockyard reserve calculation method of claim 1, wherein the excavation face set is obtained by:
extracting an excavation line set from a stock ground engineering geological profile,
and performing two-dimensional drawing according to the excavation line set to obtain the excavation surface set.
6. The stock ground reserve calculation method according to claim 1 or 5, characterized in that; the number of the excavation surface sets is the same as that of the stock ground engineering geological profile maps.
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