CN113962008A - Method for generating three-dimensional mine roadway model and constructing transparent working surface - Google Patents
Method for generating three-dimensional mine roadway model and constructing transparent working surface Download PDFInfo
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Abstract
The invention belongs to the technical field of virtual simulation of mines, and relates to a method for generating a three-dimensional mine roadway model and constructing a transparent working surface, which comprises the following steps: collecting modeling information of a roadway system and a transparent working face by using various conventional methods; processing the collected modeling information, and performing standardized and systematic storage by using a database technology; a 'parameterization' modeling method is provided, and a dynamic generation algorithm of a 'roadway and transparent working face' three-dimensional refined model is compiled based on the method; calling mapping and rendering technologies, and processing the constructed three-dimensional space model; an interactive operation function module is researched and developed to realize multi-functional operation display of a multi-level transparent model; optimizing and integrating an algorithm module, and researching and developing a tunnel and transparent working surface space model integrated dynamic reconstruction virtual simulation platform; the method is suitable for efficiently and dynamically constructing the mine roadway system and the transparent working face space refined model under different geological conditions, and provides support for intelligent comprehensive mining, disaster simulation and the like of the coal mine.
Description
Technical Field
The invention belongs to the technical field of virtual simulation of mines, and particularly relates to a method for generating a three-dimensional mine roadway model and constructing a transparent working surface.
Background
The high-precision construction of the three-dimensional mine roadway and transparent working face model is one of key parts for establishing the intelligent mine, and has important practical significance for the intelligent and automatic development of the coal resource mining process. At present, in the aspect of building a three-dimensional mine roadway model, the model building space pose forms of arc roadways, irregular roadways and the like are easy to distort, and the three-dimensional model at the intersection of communicated roadways is complex in representation, overlapped, not communicated and the like. In the aspect of building a transparent working face model, due to the various occurrence states of coal beds and the requirements of an intelligent comprehensive mining system of a coal mine, the high-precision model suitable for various complex geological conditions is built, and the high-precision model is still one of core research contents.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a method for generating a three-dimensional mine roadway model and constructing a transparent working face, so as to realize the integrated construction of a system model of the mine roadway and the transparent working face, and dynamically update and correct the system model in real time according to the production construction progress.
In order to achieve the purpose, the invention provides the following technical scheme: a method for generating a three-dimensional mine roadway model and constructing a transparent working surface comprises the following construction steps:
the method comprises the following steps: collecting modeling information of a roadway and a transparent working face;
step two: establishing a multi-source data preprocessing model of the system, cleaning the acquired modeling information, and storing the processed multi-source modeling data in a standardized and systematic manner by utilizing a database technology;
step three: a 'parameterization' modeling method is provided, and a dynamic generation algorithm of a three-dimensional refined model of a roadway and a rock stratum is compiled based on the method;
step four: transferring a mapping and rendering technology to process the three-dimensional model generated in the step three in real time;
step five: designing an interactive operation functional module;
step six: and optimizing and integrating an algorithm module, and researching and developing an integrated dynamic reconstruction virtual simulation platform of the roadway and rock stratum space model.
As a preferred technical scheme of the invention, in the first step, the method for acquiring information comprises wire measurement, AutoCAD drawing extraction and drilling of a borehole; acquiring tunnel modeling information including a tunnel center wire point three-dimensional coordinate, a tunnel section height and a communication condition; and obtaining rock stratum modeling information comprising rock stratum thickness, lithology and measuring point coordinates.
As a preferred technical scheme of the invention, in the second step, by utilizing a multi-source data preprocessing model for establishing the system, data cleaning, data integration, data transformation and data reduction processing can be carried out on the collected modeling information; and establishing a database based on PostgreSQL design, reasonably storing the processed modeling data, and providing support for three-dimensional visual model reconstruction.
As a preferred technical solution of the present invention, in the third step, the "parameterized" modeling method for the roadway space model specifically includes:
a. data reading and processing: the data reading and processing module is used for directly calling historical data stored in a database and dynamic data collected in real time;
b. generating a roadway center line: based on the idea of curved arc lane straight lane, calling space key point information to generate a central line of a roadway system;
c. and (3) generating a space structure model: solving three-dimensional coordinates of key feature points of each tunnel section based on the tunnel central line and section feature information, and establishing a data set for storage; generating contour lines of all roadway sections one by one according to a circulation mode, and completing construction of a space structure model of a roadway system;
d. constructing a single-section roadway model: calling key characteristic point information of two adjacent roadway sections in sequence along the advancing direction of the central line of each well roadway, generating a plane by every four keys in a circulating mode according to a certain rule, and seamlessly splicing a single-section roadway model by using a series of generated planes;
e. constructing a single roadway model: generating a plurality of single roadways with specific spatial positions by using data stored in the roadway section key feature point data set as supports and through a single roadway model construction method; taking a single roadway as a structural unit, and tightly connecting every two roadways in sequence to form a whole roadway model;
f. constructing a roadway system model: dividing a mine roadway system into a plurality of roadway models based on the idea of simplifying the traditional Chinese medicine into simple Chinese medicine; continuously calling modeling information in a circulation mode, firstly generating a first roadway model and then generating a second roadway model through a single roadway model construction method until the last roadway model is generated and circulation is finished, and forming a roadway system model;
g. and (3) dynamically generating a new excavation roadway model: and (f) repeating the steps b to f, and dynamically reconstructing a newly tunneled roadway model in the production process.
As a preferred technical solution of the present invention, in the third step, the "parameterized" modeling method for the spatial model of the rock formation specifically includes:
a. rock mass modeling data stored in a database are called, wherein the rock mass modeling data comprise drilling detection point coordinates and coal seam thickness;
b. respectively carrying out interpolation processing on the sampling points of the top surface and the bottom surface of the rock stratum by utilizing an interpolation algorithm to obtain a series of key point coordinates, and establishing different lists to respectively store the key point coordinates of the top surface and the bottom surface of the rock stratum;
c. calling a Delaunay algorithm module through a loop method, firstly combining every three key points according to certain rules according to the coordinates of the key points on the top surface of the rock stratum, extracting index values of each group of key points and storing the index values in a newly-built list; extracting and storing the rock stratum bottom surface key point index value by using the same method;
d. by using a circulation mode, firstly calling key point index values of the top surface and the bottom surface of a first group of rock strata stored in the list, calling corresponding key point three-dimensional coordinates by using the index values as data support, and generating a triangular prism by combining with a three.js modeling function; then calling the key point index values of the top surface and the bottom surface of the next group of rock strata to generate triangular prisms until the last group of triangular prisms are generated, and seamlessly splicing the triangular prisms into a stratum model;
e. and calling the newly acquired data, and updating and correcting the established stratum model.
As a preferred technical solution of the present invention, in the fourth step, the real-time processing includes making and storing roadways and plan views of different rock strata materials; and calling a material plan according to lithology and the like by using a three.js charting function to realize charting of the roadway and the rock stratum.
As a preferred technical solution of the present invention, in the fourth step, a WebGL render Renderer of three.
As a preferred technical solution of the present invention, in the fifth step, the interactive operation function module includes translation, rotation, zooming, three-view, and transparency setting, and the code module is written by using JavaScript language.
As a preferred technical scheme of the invention, in the sixth step, based on Python, JavaScript and three.js programming languages, a mine roadway model generation and transparent working surface construction platform is jointly developed, so that the three-dimensional reconstruction of the visualization model of the roadway and the rock stratum is realized.
Compared with the prior art, the invention has the beneficial effects that: aiming at complex mine geology, the requirements of an intelligent fully-mechanized coal mining system of a coal mine and the like, a platform constructed by a mine-collecting well lane system and a transparent working face space model is designed and developed; the platform is suitable for efficiently and dynamically generating a mine roadway system and a transparent working face space refined model under different geological conditions.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic view of a spatial structure model of a single roadway according to the present invention;
FIG. 2 is a schematic diagram of an inclined roadway generation algorithm and model of the present invention;
FIG. 3 is a schematic diagram of a vertical roadway generation algorithm and model of the present invention;
FIG. 4 is a schematic diagram showing the structure of a T-shaped roadway according to the present invention;
FIG. 5 is a schematic view showing the structure of a Y-shaped roadway according to the present invention;
FIG. 6 is a schematic diagram of a single section roadway model generation of the present invention;
FIG. 7 is a schematic diagram of a single lane model generation of the present invention;
FIG. 8 is a schematic representation of borehole-based formation data acquisition in accordance with the present invention;
FIG. 9 is a schematic diagram of a formation model cell configuration according to the present invention;
FIG. 10 is a schematic three-dimensional depiction of a single-layered rock formation according to the present invention;
FIG. 11 is a schematic representation of formation model construction according to the present invention;
FIG. 12 is a block diagram of the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-12, the present invention provides the following technical solutions: a method for generating a three-dimensional mine roadway model and constructing a transparent working surface comprises the following construction steps:
the method comprises the following steps: collecting modeling information of a roadway and a transparent working face;
step two: establishing a multi-source data preprocessing model of the system, cleaning the acquired modeling information, and storing the processed multi-source modeling data in a standardized and systematic manner by utilizing a database technology;
step three: providing a parameterized modeling method, and compiling a dynamic generation algorithm of a three-dimensional refined model of a roadway and a rock stratum based on the method;
step four: transferring a mapping and rendering technology to process the three-dimensional model generated in the step three in real time;
step five: designing an interactive operation functional module;
step six: and optimizing and integrating an algorithm module, and researching and developing an integrated dynamic reconstruction virtual simulation platform of the roadway and rock stratum space model.
Specifically, in the first step, the method for acquiring information includes wire measurement, AutoCAD drawing extraction, and drilling a borehole; acquiring static and dynamic modeling information of a roadway, wherein the information comprises three-dimensional coordinates of a central wire point of the roadway, the height of a section of the roadway and communication conditions; the obtained rock stratum modeling information comprises rock stratum thickness, lithology and measuring point coordinates, the number of drilled holes in fault areas, areas with large fluctuation changes, space key points (roadway intersection points, highest points and the like) and the like is reasonably encrypted, and data acquisition strength is increased.
Specifically, in the second step, the collected modeling information may be subjected to data cleaning, data integration, data transformation, and data reduction processing by using the multi-source data preprocessing model of the building system; encrypting data of detailed areas with obvious changes of rock strata and roadway characteristics, such as areas with large fluctuation, roadway bending, rock stratum faults and the like, by utilizing an interpolation mode; and establishing a database based on PostgreSQL design, reasonably storing the processed modeling data, and providing support for three-dimensional visual model reconstruction.
Specifically, in the third step of the present embodiment, based on a parameterized modeling method, a roadway system space model and a transparent working surface dynamic refinement generation algorithm are written, modeling information of a database is quickly called by using the algorithm, and a three.js modeling function is combined to realize refinement construction of a roadway space model and a transparent working surface model, where the parameterized modeling method for the roadway space model specifically includes:
a. data reading and processing: the data reading and processing module is used for directly calling historical data stored in a database and dynamic data collected in real time;
b. generating a roadway center line: based on the idea of curved arc lane straight lane, calling space key point information to generate a central line of a roadway system;
c. and (3) generating a space structure model: solving three-dimensional coordinates of key feature points of each tunnel section based on the tunnel central line and section feature information, and establishing a data set for storage; generating the contour lines of all roadway sections one by one according to a cyclic mode, namely completing the construction of a space structure model of a roadway system, wherein the solving formulas of key feature points of different roadway sections are different due to different roadway space forms, and the formulas (1), (2) and (3) are three-dimensional coordinate calculation formulas of key feature points of straight roadway sections, as shown in fig. 1, the key feature points on the contour line of the first roadway section of the straight roadway are D (1,0), D (1,1) … … D (1, k), D (1,0) and the three-dimensional coordinates of D (1,1) can be respectively solved by utilizing the formulas (1) and (2), and the mathematical expressions of the key feature points D (1,2) -D (1, k) on the circular arc are shown in the formula (3):
wherein, a central lead point O is provided1、O2Respectively is (x)0，y0，z0) And (x)1，y1，z1) The width of the roadway is W, the height of the vertical wall of the roadway is H, and beta is two adjacent key feature nodes and O on the circular arc1Theta is the included angle between the first key feature node on the arc line and the X axis, and the calculation formula is as shown in formula (4):
the coordinate calculation formula of the two key characteristic points at the bottom of the section of the inclined roadway is different from that of a straight roadway, such as formulas (1) and (2), and the three-dimensional coordinate calculation formula of the key characteristic points of the section of the inclined roadway is as follows:
wherein alpha is the inclined angle of the inclined roadway; l is sector radius, A is alpha-nk/2, n is the number of equally divided sectors, k is an integer between 0 and n, B is 1-cosA, C is arctan [ (O)2_x-O1_x)/(O2_y-O1_y)]。
As shown in FIG. 3, the vertical roadway can be approximately regarded as a hollow cylinder with a very thin wall thickness, namely a hollow cylinder O0、 O1The circle is divided equally, the equal division points on the circle are the key feature points of the vertical roadway, and the three-dimensional coordinate calculation formula of the key feature points of the section of the vertical roadway is as follows:
let the center coordinate be (x)0，y0，z0) And if the radius is R, the mathematical expression of the coordinates of the key characteristic points is shown as a formula (6), wherein n is the number of equally divided circles (n is more than or equal to 0 and less than or equal to 15).
For the T, Y type special lane, it can be decomposed into three part lanes, for example, fig. 4, the T type lane is decomposed into 1,2, 3 part lanes, and in order to reconstruct the lane model really and maintain connectivity of the intersecting lanes, it is required to take the key feature point coordinates on the cO ' "d, cO '" q, and dO ' "q. The key node solving formulas on the arcs corresponding to qO '", dO'", and cO '"are respectively expressed as formulas (7), (8), and (9) by establishing coordinate axes with O as a coordinate center and setting α and ql and O'" as l. Wherein z is0A z coordinate of O'; h is the wall height, m; l is the length of cO', m; l is1Is the length of dO', m; theta is the central angle, °; β ═ (180 ° - θ)/2; n is the number of equally divided circles; k is an integer between 0 and n/2, and then the three-dimensional coordinates of key characteristic points on the intersecting surface of the T roadwayThe calculation formula is as follows:
the seamless reconstruction principle of the Y-type tunnel and the T-type tunnel is the same, but the difference exists in the calculation of the key point coordinates of the tunnel section, as shown in fig. 5, if < cmb is alpha; o0f is l; the width of the lane is W; o0Has the coordinates of (x)0，y0，z0)。
Setting the height of a straight wall of a roadway as h; the central angle of the arc arch is gamma; n is the number of equally divided circles; k is an integer of 0 to n/2. Then, the formulas of the coordinates of the key points on the arcs corresponding to oc, ob and oa are shown in formulas (10), (11) and (12), and the three-dimensional coordinate calculation formula of the key feature points on the intersecting surface of the Y roadway is as follows:
calling the three-dimensional coordinate information of the key characteristic points of each roadway section one by one in a circulating mode to generate a series of closed curves (roadway section contour lines), namely completing the construction of a space structure model of the roadway system, wherein the A section generates A shown in figure 10A1…An- 1A0Closed curve, B section generation B0B1…Bn-1B0And closing the curve to complete the construction of the spatial structure model of the roadway system.
d. Constructing a single-section roadway model: referring to fig. 6, a section A, B is a section of an adjacent roadway, key feature point information of the sections of the adjacent two roadways is taken in sequence along the advancing direction of the central line of each roadway, a plane is generated by every four keys in a cyclic mode according to a certain rule, a single roadway model can be seamlessly spliced by utilizing a series of generated planes, three-dimensional coordinate data of key feature points of the sections of the two adjacent roadways is called, and A is called0A1…An-1、B0B1…Bn-1Three-dimensional coordinate data of the points are respectively stored in an A set and a B set, wherein the lengths of the A set and the B set are both n; firstly, calling coordinate data of corresponding points of index values 1 and 0 in the sets A and B in sequence, and combining with three.js modeling function to generate a plane A0A1B1B0(ii) a Then by plane A0A1B1B0The modeling mode is to call the coordinate data of the corresponding points of the index values 2 and 1 in the sets A and B1 and 2 to generate a plane A1A2B2B1Until plane A is generatedn-1A0B0Bn-1And a single-section roadway model can be seamlessly formed through the generated series of planes.
e. Constructing a single roadway model: generating a plurality of single roadways with specific spatial positions by using data stored in the roadway section key feature point data set as supports and through a single roadway model construction method; taking a single roadway as a structural unit, and tightly connecting every two roadways in sequence to form a whole roadway model, namely, starting from the initial point of the single roadway, calling key characteristic point information of the sections of the first roadway and the second roadway, and generating a first roadway model by a single roadway model construction method; and calling key characteristic point information of the second and third roadway sections in a circulation mode to generate a secondary roadway model, and repeating the steps until the generation of the last roadway model is finished, taking the single roadway as a structural unit, and tightly connecting every two roadways in sequence to form a whole roadwayRoadway model, see FIG. 7, from a single roadway starting point O1Firstly, calling key characteristic point information of a first roadway section (A, B section) and a second roadway section (AB section) and generating a first roadway model through a single roadway model construction method; and calling key feature point information of the second and third roadway sections (B, C sections) in a circulation mode to generate a secondary roadway model (BC roadway), and repeating the steps until the last roadway model is generated to finish circulation. Taking a single roadway as a structural unit, and tightly connecting every two roadways in sequence to form a whole roadway model;
f. constructing a roadway system model: dividing a mine roadway system into a plurality of roadway models based on the idea of simplifying the traditional Chinese medicine into simple Chinese medicine; continuously calling modeling information in a circulation mode, firstly generating a first roadway model and then generating a second roadway model through a single roadway model construction method until the last roadway model is generated and circulation is finished, and forming a roadway system model;
g. and (3) dynamically generating a new excavation roadway model: and (f) repeating the steps b to f, and dynamically reconstructing a newly tunneled roadway model in the production process.
Specifically, in this embodiment, in step three, the "parameterized" modeling method for the rock formation space model specifically includes:
a. data reading: accessing a database, and calling historical data required by transparent working face modeling, wherein the historical data comprises collected drilling data, geophysical prospecting data, fault data and the like;
b. resolving the coordinates of the feature points: the three-dimensional coordinate of the sampling point of the top surface of the rock body corresponding to a certain drilling hole is (Z)1-1_X,Z1-1_Y,Z1-1Z) and the thickness of the rock mass is delta Z, the sampling point (Z) of the rock mass lower layer1-2Point) three-dimensional coordinate calculation formula as follows:
c. and (3) data set construction: and (3) regarding faults, collapse columns and the like of different rock stratums and the same rock stratum as independent individuals, integrating information space characteristic point coordinates, lithology and the like of each independent individual, and establishing data sets for storage respectively.
d. And (3) encrypting the virtual drilling hole: calling rock stratum space characteristic point coordinate data; setting grid precision according to requirements, and respectively calculating the number of X grids and Y grids; and acquiring encrypted virtual drilling three-dimensional coordinates by using a Universal Kriging function of Python language through an interpolation mode based on the called coordinate data and the grid precision, and storing the three-dimensional coordinate information into the established data set. The following is a mathematical expression for the measurement point estimator:
wherein, Wi(i is 0,1,2 … … n, n indicates the number of sample points) as a weight coefficient.
e. A space triangular network resolving model is constructed based on a Bowyer-Watson algorithm, and the model comprises the following specific steps: firstly, establishing a vertex and triangle linked list; constructing a triangle for accommodating all spatial feature points of the upper surface of the rock stratum, and respectively storing the vertex of the triangle and the triangle into a vertex and a triangle linked list; inserting the space characteristic points of the corresponding data set by using a circulation mode, and searching out the influence triangles of the points in the triangle linked list; processing the influencing triangle, and connecting the inserted spatial feature points with the vertex of the influencing triangle; optimizing the formed triangle, and respectively storing the optimized triangle and the vertex to a triangle and a vertex linked list; fourthly, inserting the last spatial feature point in the data set to finish circulation; and fifthly, acquiring a vertex linked list of the triangular net formed by the spatial feature points of the lower strata of the rock stratum by utilizing the steps.
f. Generating a unit structure model: referring to FIG. 9, i-th group of data ([ (Y) in the triangular net vertex chain table composed of the spatial feature points of the upper and lower strata of the rock stratum1-1-4X,Y1-1-4Y,Y1-1-4Z,)…(Y1-1-6X,Y1-1-6Y,Y1-1-6Z,)]And [ (Y)1-2-4X,Y1-2- 4Y,Y1-2-4Z,)…(Y1-2-6X,Y1-2-6Y,Y1-2-6Z,)]) (ii) a Using the called data as support, and utilizing the three.js modeling function to generate two data with the functions ofTriangle with fixed spatial position (triangle Y)1-1-4Y1-1-5Y1-1-6And triangle Y1-2-4Y1-2-5Y1-2-6) (ii) a Then two groups of data are fetched according to a certain rule to generate three quadrangles (quadrangles Y) with fixed spatial positions1-1-4Y1-1-5Y1-2- 5Y1-2-4、Y1-1-5Y1-1-6Y1-2-6Y1-2-5、Y1-1-6Y1-1-4Y1-2-4Y1-2-6) (ii) a The generated triangle and the quadrangle can be spliced into a triangular prism model.
g. Three-dimensional depicting of single rock stratum: referring to fig. 10, defining an independent variable i (i is greater than or equal to 0 and less than n, and n is 4), and establishing a cyclic model; the loop begins when i equals 0, calling the first set of data in the vertex chain table ([ (Y)1-1-4X,Y1-1-4Y,Y1-1-4Z,)…(Y1-1-6X,Y1-1- 6Y,Y1-1-6Z,)]And [ (Y)1-2-4X,Y1-2-4Y,Y1-2-4Z,)…(Y1-2-6X,Y1-2-6Y,Y1-2-6Z,)]) Generating a first triangular prism model (triangular prism 1) by a unit structure model generation method; then generating a second triangular prism model (triangular prism 2), and repeating the steps until the nth model is generated and the cycle is ended (triangular prism 4); and the three-dimensional visual description of the single-layer rock mass model can be realized by utilizing the generated series of triangular prism models.
h. Model naming: the generated three-dimensional formation model is named using the three.js function.
i. Constructing all rock stratum models: referring to fig. 11, defining an independent variable j (j is greater than or equal to 0 and less than m, wherein j is an integer, m is the sum of quantities of rock strata, faults, collapse columns and the like, and m is 2), and establishing a cyclic model; and when j is equal to 0, starting circulation, calling the 1 st group of data in the data set, and generating a vertex chain table ([ [ (Y) of the triangulation formed by the spatial feature points of the upper and lower layers of the 1 st rock layer by using the method set forth in the step e1-1-1X,Y1-1-1Y,Y1-1-1Z),(Y1-1-2X,Y1-1-2Y,Y1-1-2Z),(Y1-1-3X,Y1-1-3Y,Y1-1-3Z)],…,[(Y1-1- 4X,Y1-1-4Y,Y1-1-4Z),(Y1-1-5X,Y1-1-5Y,Y1-1-5Z),(Y1-1-6X,Y1-1-6Y,Y1-1-6Z)]]And [ [ (Y)1-2-1X,Y1-2-1Y,Y1-2-1Z),(Y1-2-2X,Y1-2-2Y,Y1-2-2Z),(Y1-2-3X,Y1-2-3Y,Y1-2-3Z)],…,[(Y1-2-4X,Y1-2-4Y,Y1-2-4Z),(Y1-2-5X,Y1-2-5Y,Y1-2-5Z),(Y1-2-6X,Y1-2-6Y,Y1-2-6Z)]]) Then, realizing three-dimensional visual description of a rock stratum model of the layer 1 (rock stratum 1) by using the methods introduced in the step f and the step g; starting the 2 nd circulation to generate a 2 nd rock stratum three-dimensional visualization model (rock stratum 2); and repeating the steps until the generation of the three-dimensional visual model of the m-th rock stratum is finished.
j. And (3) model interactive correction: storing more accurate and detailed data acquired in the later mining process to a database; the rock stratum model generation algorithm automatically calls the newly stored data, processes the data and inserts the data into a corresponding data set; the algorithm will automatically update and correct the stratigraphic model according to the coordinates of the new insertion point without re-modeling.
Specifically, in the fourth step of the present embodiment, the real-time processing includes making and storing a plan view of a roadway and different rock strata materials; the method for realizing the mapping of the roadway and the rock stratum by using the thread.js mapping function to call the material plane map according to the lithology and the like specifically comprises the following steps: a. calling the collected attribute information according to the model name, and judging the properties of the roadway and the coal bed; calling corresponding material pictures in the database, and carrying out mapping processing on the model; and b, calling a WebGL render Renderer of the thread.js to render the generated model.
Specifically, in the fifth embodiment, a code module is written by using a JavaScript language in the step five, and basic operation, transparency setting, and a three-view function are designed and developed; the basic operation can realize translation, zooming and rotation of the virtual scene; the transparency setting function supports displaying different models under any transparency; the three-view function may expose a model of a virtual scene from three different perspectives based on the same user interface.
Specifically, in the sixth step, based on Python, JavaScript, and three.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A method for generating a three-dimensional mine roadway model and constructing a transparent working surface is characterized by comprising the following construction steps:
the method comprises the following steps: collecting modeling information of a roadway and a transparent working face;
step two: establishing a multi-source data preprocessing model of the system, cleaning the acquired modeling information, and storing the processed multi-source modeling data in a standardized and systematic manner by utilizing a database technology;
step three: a 'parameterization' modeling method is provided, and a dynamic generation algorithm of a three-dimensional refined model of a roadway and a rock stratum is compiled based on the method;
step four: transferring a mapping and rendering technology to process the three-dimensional model generated in the step three in real time;
step five: designing an interactive operation functional module;
step six: and optimizing and integrating an algorithm module, and researching and developing an integrated dynamic reconstruction virtual simulation platform of the roadway and rock stratum space model.
2. The mine three-dimensional roadway model generation and transparent working face construction method according to claim 1, characterized in that: in the first step, the information acquisition method comprises the steps of conducting wire measurement, extracting an AutoCAD drawing and drilling a borehole; acquiring tunnel modeling information including a tunnel center wire point three-dimensional coordinate, a tunnel section height and a communication condition; and obtaining rock stratum modeling information comprising rock stratum thickness, lithology and measuring point coordinates.
3. The mine three-dimensional roadway model generation and transparent working face construction method according to claim 1, characterized in that: in the second step, the collected modeling information can be subjected to data cleaning, data integration, data transformation and data reduction processing by utilizing a multi-source data preprocessing model of the building system; and establishing a database based on PostgreSQL design, reasonably storing the processed modeling data, and providing support for three-dimensional visual model reconstruction.
4. The mine three-dimensional roadway model generation and transparent working face construction method according to claim 1, characterized in that: in the third step, the tunnel space model parameterization modeling method specifically comprises the following steps:
a. data reading and processing: the data reading and processing module is used for directly calling historical data stored in a database and dynamic data collected in real time;
b. generating a roadway center line: based on the idea of curved arc lane straight lane, calling space key point information to generate a central line of a roadway system;
c. and (3) generating a space structure model: solving three-dimensional coordinates of key feature points of each tunnel section based on the tunnel central line and section feature information, and establishing a data set for storage; generating contour lines of all roadway sections one by one according to a circulation mode, and completing construction of a space structure model of a roadway system;
d. constructing a single-section roadway model: calling key characteristic point information of two adjacent roadway sections in sequence along the advancing direction of the central line of each well roadway, generating a plane by every four keys in a circulating mode according to a certain rule, and seamlessly splicing a single-section roadway model by using a series of generated planes;
e. constructing a single roadway model: generating a plurality of single roadways with specific spatial positions by using data stored in the roadway section key feature point data set as supports and through a single roadway model construction method; taking a single roadway as a structural unit, and tightly connecting every two roadways in sequence to form a whole roadway model;
f. constructing a roadway system model: dividing a mine roadway system into a plurality of roadway models based on the idea of simplifying the traditional Chinese medicine into simple Chinese medicine; continuously calling modeling information in a circulation mode, and through a single roadway model construction method, firstly generating a first roadway model, then generating a second roadway model, and ending circulation until the last roadway model is generated, so that a roadway system model can be formed;
g. and (3) dynamically generating a new excavation roadway model: and (f) repeating the steps b to f, and dynamically reconstructing a newly tunneled roadway model in the production process.
5. The mine three-dimensional roadway model generation and transparent working face construction method according to claim 1, characterized in that: in the third step, the formation space model parameterization modeling method specifically comprises the following steps:
a. rock mass modeling data stored in a database are called, wherein the rock mass modeling data comprise drilling detection point coordinates and coal seam thickness;
b. respectively carrying out interpolation processing on the sampling points of the top surface and the bottom surface of the rock stratum by utilizing an interpolation algorithm to obtain a series of key point coordinates, and establishing different lists to respectively store the key point coordinates of the top surface and the bottom surface of the rock stratum;
c. calling a Delaunay algorithm module through a loop method, firstly combining every three key points according to certain rules according to the coordinates of the key points on the top surface of the rock stratum, extracting index values of each group of key points and storing the index values in a newly-built list; extracting and storing the rock stratum bottom surface key point index value by using the same method;
d. by using a circulation mode, firstly calling key point index values of the top surface and the bottom surface of a first group of rock strata stored in the list, calling corresponding key point three-dimensional coordinates by using the index values as data support, and generating a triangular prism by combining with a three.js modeling function; then calling the key point index values of the top surface and the bottom surface of the next group of rock strata to generate triangular prisms until the last group of triangular prisms are generated, and seamlessly splicing the triangular prisms into a stratum model;
e. and calling the newly acquired data, and updating and correcting the established stratum model.
6. The mine three-dimensional roadway model generation and transparent working face construction method according to claim 1, characterized in that: in the fourth step, the real-time processing comprises manufacturing and storing plan views of the roadway and different rock stratum materials; and calling a material plan according to lithology and the like by using a three.js charting function to realize charting of the roadway and the rock stratum.
7. The mine three-dimensional roadway model generation and transparent working face construction method according to claim 1, characterized in that: and in the fourth step, calling a WebGL render Renderer of three.
8. The mine three-dimensional roadway model generation and transparent working face construction method according to claim 1, characterized in that: in the fifth step, the interactive operation function module comprises translation, rotation, zooming, three-view and transparency setting, and a code module is written by using a JavaScript language.
9. The mine three-dimensional roadway model generation and transparent working face construction method according to claim 1, characterized in that: and in the sixth step, based on Python, JavaScript and three.js programming languages, a mine roadway model generation and transparent working surface construction platform is jointly developed, and the three-dimensional reconstruction of the visual model of the roadway and the rock stratum is realized.
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