CN-115713575-B - Automatic mapping method for coal mine gradient write-up data

CN115713575BCN 115713575 BCN115713575 BCN 115713575BCN-115713575-B

Abstract

The invention discloses an automatic coal mine gradient compaction data mapping method which comprises the steps of 1, arranging underground obtained measurement data, including distance, bottom plate elevation, bottom gangue thickness, coal seam thickness and top gangue thickness, 2, setting BI parameters, 3, drawing a coal seam compaction bar graph corresponding to each measurement point in a table in the step 1 according to the measurement data obtained in the step 1,4, drawing coordinate axes according to the measurement data arranged in the step 1, 5, drawing grid lines according to the measurement data in the step 1, 6, drawing a coal seam top and bottom plate curve according to the table data in the step 1, and filling according to lithology of coal seams and gangue after drawing. The method only needs 2 minutes to generate the histogram, so that the working efficiency of drawing is greatly improved, and meanwhile, the quality of the drawing generated by the method is good compared with that of the traditional hand drawing.

Inventors

AN LIN
HAN BAOSHAN
WANG XINMIAO
WANG SHAOLONG
LIU CHENGUANG

Assignees

中煤科工西安研究院(集团)有限公司

Dates

Publication Date: 20260512
Application Date: 20221031

Claims (5)

1. The automatic mapping method for the coal mine gradient write-in data is characterized by comprising the following steps of: Step 1, arranging underground measurement data, wherein the underground measurement data comprise distances, bottom plate elevation, bottom gangue thickness, coal seam thickness and top gangue thickness, the distances refer to the distances from measurement points to roadway openings, the distances corresponding to all measurement points are X1-Xn, the bottom plate elevation is Z1-Zn, the bottom gangue thickness is H01-H0 n, the coal seam thickness is H11-H1 n and the top gangue thickness is H21-H2 n, wherein X1-Xn refer to the distances from 1-n measurement points to roadway openings, and n is the number of measurement points; step 2, setting BI parameters, wherein the BI parameters take a value of 1:5 or 1:10; And 3, drawing a coal seam compaction bar graph of each measuring point corresponding to the measuring point in the table in the step 1 according to the measuring data obtained in the step 1, wherein the method comprises the following steps: step 31, calculating to obtain the minimum value of the elevation of the bottom plate in all the measurement points according to the measurement data obtained in the step 1; Step 32, calculating to obtain vertex coordinates of a top gangue thickness column, a coal seam thickness column and a bottom gangue thickness column corresponding to each measuring point, respectively obtaining the top gangue thickness column, the coal seam thickness column and the bottom gangue thickness column according to the vertex coordinates, and sequentially splicing the top gangue thickness column, the coal seam thickness column and the bottom gangue thickness column from top to bottom to obtain a coal seam written histogram corresponding to the measuring point; step 33, filling the top gangue thickness column, the coal seam thickness column and the bottom gangue thickness column corresponding to each measuring point obtained in the step 32 respectively, and marking the coal seam thickness, the top gangue thickness and the bottom gangue thickness on the right side of a corresponding coal seam writing bar graph; and 4, drawing coordinate axes according to the measurement data arranged in the step 1, wherein the method specifically comprises the following substeps: Step 41, calculating left and right vertex coordinates of the abscissa axis of the gradient map, and drawing the abscissa axis according to the left and right vertex coordinates; Step 42, sequentially calculating the upper and lower vertex coordinates of the left ordinate axis, the right ordinate axis and the right ordinate axis by using the following four groups of formulas, and respectively drawing four ordinate axes according to the obtained upper and lower vertex coordinates: Wherein xmin and xmax are respectively the minimum value and the maximum value of the distances in all the measurement points in the step 1, zmin and zmax are respectively the minimum value and the maximum value of the elevation of the bottom plate in all the measurement points in the step 1, d1 is the distance between the ordinate axis and the bottom plate curve, 10 or 20 is taken, d2 is the distance between the two ordinate axes, and 6 or 12 is taken; Step 43, drawing a left flower rod between the left one ordinate axis and the left two ordinate axes; Step 44, drawing a right flower rod symmetrical to the left flower rod between the right one ordinate axis and the right two ordinate axes; step 45, marking the corresponding height of each rectangle in the flower stem on the left side of the left one ordinate axis and the right side of the right two ordinate axes; step 5, drawing grid lines according to the measurement data in the step 1, wherein drawing the grid lines comprises drawing parallel lines of an abscissa axis and parallel lines of an ordinate axis between a left ordinate and a right ordinate; step 6, drawing a coal seam roof and floor curve according to the table data in the step 1, and converting the measured data in the step 1 into four data sets, wherein the four data sets are respectively as follows: And (3) respectively connecting the four data sets (1), (2), (3) and (4) into curves, wherein the four obtained curves are a bottom gangue curve, a coal seam bottom plate curve, a coal seam top plate curve and a coal seam top gangue curve respectively, filling according to lithology of the coal seam and the gangue after drawing, filling a mudstone legend between the bottom gangue curve and the coal seam bottom plate curve, filling a mudstone legend between the top gangue curve and the coal seam top plate curve, and filling black between the coal seam top plate curve and the coal seam bottom plate curve.
2. The method for automatically mapping coal mine gradient map data as set forth in claim 1, wherein in the step 2, four vertex coordinates of the coal seam thickness column are: The coordinates of four vertexes of the bottom gangue thickness column are as follows: the four vertex coordinates of the top gangue thickness column are as follows: The method comprises the steps of (1) setting a coal seam writing histogram, wherein C is the width of the coal seam writing histogram, D is the distance from the coal seam writing histogram to a gradient chart, the value is 100 or 200, X is the distance obtained in the step 1, and the unit of the distance between a measuring point and a roadway datum point is m.
3. The automatic mapping method of coal mine gradient map data as set forth in claim 2, wherein in the step 41, the calculation formulas of the left and right vertex coordinates are as follows: wherein xmin and xmax are respectively the minimum value and the maximum value of the distances in all the measurement points in the step 1, zmin and zmax are respectively the minimum value and the maximum value of the elevation of the bottom plate in all the measurement points in the step 1, d1 is the distance between the ordinate axis and the bottom plate curve, 10 or 20 is taken, d2 is the distance between the two ordinate axes, and 6 or 12 is taken.
4. The automatic mapping method of coal mine gradient map data as set forth in claim 3, wherein said step 43 specifically includes the steps of: Step 431, dividing the area between the left ordinate axis and the left ordinate axis into a plurality of field grids; step 432, calculating coordinates of four vertexes of each rectangle in the four rectangles of the current field word lattice by using the following formula; Wherein, i is the serial number of the current field word lattice, the value range of i is [1, int (zmax-zmin)/BI ], and i is a positive integer; step 433, let i=i+1, return to step 432 until i=int (zmax-zmin)/BI, and obtain the calculation results of four vertices of each rectangle of all the field word lattices between the left ordinate axis and the left ordinate axis; and 434, according to the calculation result of the step 433, filling all rectangles with different colors in a distinguishing way to obtain the left flower stem.
5. The automatic mapping method of coal mine gradient map data as set forth in claim 3, wherein in the step 5, coordinates of left and right vertices of parallel lines of an abscissa axis are respectively: Wherein i represents an ith horizontal line of the abscissa axis, the value range of i is [1, int (zmax-zmin)/BI ], and i is a positive integer; the coordinates of the upper and lower vertexes of the parallel lines of the ordinate axis are as follows: Wherein j represents a parallel line of the j th ordinate axis, the value range of j is [1, int (xmax-xmin)/BI ], and j is a positive integer.

Description

Automatic mapping method for coal mine gradient write-up data Technical Field The invention belongs to the technical field of coal field geology, and relates to a method for automatically mapping gradient data of a coal mine working face. The method can greatly simplify the drawing process and realize automatic drawing of data acquisition. Background The coal mine gradient map is one of basic coal mine map elements, can reflect coal seam fluctuation and thickness variation, and provides data support for coal mine production decisions. In general, the gradient map is formed according to the roadway and the cutting holes of the fully mechanized mining face, and the roadway and the working face are measured by a high-precision total station according to the required distance. And after the well is lifted, drawing a gradient map by using the data obtained by measurement through CAD drawing software. The method comprises the steps of firstly sorting underground data, inputting coordinates of each measuring point according to a CAD drawing software format, connecting the coordinates into a line to form a bottom plate curve of a coal bed, and drawing data of each real writing point into a real writing diagram according to real writing data. This slope map drawing method is time-consuming and laborious. The drawing of a slope chart usually needs professional plotters and technicians to spend more than 8 hours to finish the drawing, and a large amount of data input work is needed in the drawing process, so that errors are easy to occur, and the correctness of the chart is affected. Disclosure of Invention The invention aims to provide an automatic mapping method for coal mine gradient sketched data, which aims to solve the problems that the traditional mapping method is labor-consuming and is easy to make mistakes. In order to achieve the purpose, the invention discloses an automatic mapping method for coal mine gradient real data, which specifically comprises the following steps: Step 1, arranging underground measurement data, wherein the underground measurement data comprise distances, bottom plate elevation, bottom gangue thickness, coal seam thickness and top gangue thickness, the distances refer to the distances from measurement points to roadway openings, the distances corresponding to all measurement points are X1-Xn, the bottom plate elevation is Z1-Zn, the bottom gangue thickness is H01-H0 n, the coal seam thickness is H11-H1 n and the top gangue thickness is H21-H2 n, wherein X1-Xn refer to the distances from 1-n measurement points to roadway openings, and n is the number of measurement points; Step 2, setting BI parameters; And 3, drawing a coal seam compaction bar graph of each measuring point corresponding to the measuring point in the table in the step 1 according to the measuring data obtained in the step 1, wherein the method comprises the following steps: step 31, calculating to obtain the minimum value of the elevation of the bottom plate in all the measurement points according to the measurement data obtained in the step 1; Step 32, calculating to obtain vertex coordinates of a top gangue thickness column, a coal seam thickness column and a bottom gangue thickness column corresponding to each measuring point, respectively obtaining the top gangue thickness column, the coal seam thickness column and the bottom gangue thickness column according to the vertex coordinates, and sequentially splicing the top gangue thickness column, the coal seam thickness column and the bottom gangue thickness column from top to bottom to obtain a coal seam written histogram corresponding to the measuring point; step 33, filling the top gangue thickness column, the coal seam thickness column and the bottom gangue thickness column corresponding to each measuring point obtained in the step 32 respectively, and marking the coal seam thickness, the top gangue thickness and the bottom gangue thickness on the right side of a corresponding coal seam writing bar graph; and 4, drawing coordinate axes according to the measurement data arranged in the step 1, wherein the method specifically comprises the following substeps: Step 41, calculating left and right vertex coordinates of the abscissa axis of the gradient map, and drawing the abscissa axis according to the left and right vertex coordinates; Step 42, sequentially calculating the upper and lower vertex coordinates of the left ordinate axis, the right ordinate axis and the right ordinate axis by using the following four groups of formulas, and respectively drawing four ordinate axes according to the obtained upper and lower vertex coordinates: Respectively the minimum value and the maximum value of the distances among all the measuring points in the table in the step 1, zmin and zmax are respectively the minimum value and the maximum value of the elevation of the bottom plate among all the measuring points in the table in the step 1, d1 is the distance between the ordinate