CN114219915A - Method and device for generating goaf section and computer equipment - Google Patents
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Abstract
The embodiment of the application is suitable for the technical field of mining, and provides a method, a device and computer equipment for generating a dead zone profile, wherein the method comprises the following steps: constructing a dead zone three-dimensional model, wherein the dead zone three-dimensional model is a solid triangular mesh model and comprises a plurality of triangles in a triangular mesh form; determining a sectioning model for sectioning the three-dimensional model of the dead zone, and sectioning the three-dimensional model of the dead zone by adopting the sectioning model; acquiring intersection line sections between the sectioning model and the plurality of triangles; and generating a dead zone section corresponding to the sectioning model according to the intersection line section. By adopting the method, the section of the dead zone can be accurately and efficiently generated.
Description
Technical Field
The embodiment of the application belongs to the technical field of mining, and particularly relates to a method and a device for generating a goaf profile and computer equipment.
Background
A goaf formed by underground mining of mineral resources is one of main disaster sources endangering safety production of mines, detection of the goaf is effectively implemented, spatial characteristic information such as three-dimensional shape, spatial position, actual boundary and volume size of the goaf is accurately obtained, and the goaf detection method is an important basic work for analyzing, predicting and monitoring disasters caused by the goaf and improving mining design and safety management levels.
In the prior art, a digital tool can be adopted to detect the empty area and construct a three-dimensional model of the empty area. The empty area can be deeply researched through a three-dimensional model. In the research on the empty area, the section of the empty area has important significance. The section of the goaf is a plane formed by sectioning the goaf, and the research on the section of the goaf can provide a basis for related mining design (such as pillar mining) and other work at the periphery of the goaf. For example, by generating a goaf profile, the actual boundaries of the goaf can be obtained, providing basis for designing a pillar mining scheme. However, it is not easy to accurately generate the goaf section by means of the three-dimensional model of the goaf.
Disclosure of Invention
In view of this, embodiments of the present application provide a method and an apparatus for generating a goaf profile, and a computer device, which can accurately and efficiently generate a goaf profile.
A first aspect of an embodiment of the present application provides a method for generating a goaf profile, including:
constructing a dead zone three-dimensional model, wherein the dead zone three-dimensional model is a solid triangular mesh model and comprises a plurality of triangles in a triangular mesh form;
determining a sectioning model for sectioning the three-dimensional model of the dead zone, and sectioning the three-dimensional model of the dead zone by adopting the sectioning model;
acquiring intersection line sections between the sectioning model and the plurality of triangles;
and generating a dead zone section corresponding to the sectioning model according to the intersection line section.
Optionally, the determining a section model for sectioning the three-dimensional model of the empty area includes:
detecting a section of sectioning line generated in an operation window and used for sectioning the three-dimensional model of the dead zone;
determining a corresponding line segment of the dissection line segment in the empty area three-dimensional model;
and generating the sectioning model according to the corresponding line segment.
Optionally, the generating the sectioning model according to the corresponding line segment includes:
determining a reference point in the operation window and a target point of the reference point in the empty area three-dimensional model, wherein the reference point is any point outside the sectioning line in the operation window;
calculating a normal vector of a vertical line segment of the corresponding line segment pointing to the target point, wherein the normal vector of the vertical line segment is a normal vector of the section of the empty area;
and calculating a point normal equation of the section of the empty area according to the normal vector of the vertical line segment, wherein the point normal equation is used for representing the sectioning model.
Optionally, the calculating a normal vector of a vertical line segment pointing to the target point by the corresponding line segment includes:
obtaining coordinate values of the first corresponding point, the second corresponding point and the target point based on the empty area three-dimensional model;
and calculating a normal vector of a vertical line segment of the corresponding line segment pointing to the target point according to the coordinate values of the first corresponding point, the second corresponding point and the target point.
Optionally, the obtaining intersection line segments between the sectioning model and the plurality of triangles includes:
traversing a plurality of triangles, and respectively determining whether any triangle is intersected with the plane corresponding to the sectioning model;
if any one of the triangles intersects with the plane corresponding to the sectioning model, acquiring an intersection point of the triangle and the plane;
and generating intersection line sections between the sectioning model and the plurality of triangles according to the intersection points.
Optionally, after generating intersection line segments between the sectioning model and the plurality of triangles according to the intersection points, the method further includes:
the intersection line segment is adopted to segment the triangle and generate a new triangle;
and aiming at the new triangle, respectively determining whether any triangle intersects with the plane corresponding to the sectioning model.
Optionally, the generating a vacant area profile corresponding to the sectioning model according to the intersection line segment includes:
combining each intersection line segment to obtain a profile contour line;
and generating the section of the empty area according to the section contour line.
A second aspect of an embodiment of the present application provides an apparatus for generating a goaf section, including:
the construction module is used for constructing a dead zone three-dimensional model, the dead zone three-dimensional model is a solid triangular mesh model, and the dead zone three-dimensional model comprises a plurality of triangles in a triangular mesh form;
the determining module is used for determining a sectioning model for sectioning the three-dimensional model of the empty area;
the sectioning module is used for sectioning the three-dimensional model of the dead zone by adopting the sectioning model;
the acquisition module is used for acquiring intersecting line segments between the sectioning model and the triangles;
and the generating module is used for generating an empty area section corresponding to the sectioning model according to the intersection line section.
A third aspect of embodiments of the present application provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor, when executing the computer program, implements the method for generating a goaf section as described in any one of the above first aspects.
A fourth aspect of embodiments of the present application provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the method for generating a goaf section as described in any one of the above first aspects.
A fifth aspect of embodiments of the present application provides a computer program product, which when run on a computer, causes the computer to execute the method for generating a goaf section of any one of the above-mentioned first aspects.
Compared with the prior art, the embodiment of the application has the following advantages:
according to the method and the device, the three-dimensional model of the empty area comprising the triangles is constructed, when the three-dimensional model of the empty area is sectioned by adopting the sectioning model, the sectioning process can be regarded as sectioning of each triangle, and therefore the section of the empty area is generated based on the intersecting line section formed by intersection according to whether the sectioning model and the triangle are intersected or not. By adopting the method, the difficulty in generating the section of the dead zone is reduced, the efficiency and the accuracy of the section generation are improved, and accurate data basis can be provided for the related mining design and other work around the dead zone.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the embodiments or the description of the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic flow chart illustrating steps of a method for generating a goaf section according to an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart illustrating steps of another method for generating a goaf section according to an embodiment of the present disclosure;
FIG. 3 is a schematic illustration of a definitive cut model provided by an embodiment of the present application;
FIG. 4 is a schematic diagram of step S204 of a method for generating a goaf section according to an embodiment of the present application;
FIG. 5 is a schematic view of an apparatus for generating a goaf section in accordance with one embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of a computer device according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
The technical solution of the present application will be described below by way of specific examples.
Referring to fig. 1, a schematic flow chart illustrating steps of a method for generating a vacant area profile according to an embodiment of the present application is shown, and specifically, the method may include the following steps:
s101, constructing a three-dimensional model of the empty area, wherein the three-dimensional model of the empty area is a solid triangular mesh model and comprises a plurality of triangles in a triangular mesh form.
It should be noted that the method may be applied to a computer device, that is, the execution subject of the embodiment of the present application may be a computer device. The computer equipment has a modeling function and can construct a corresponding three-dimensional model of the goaf formed by ore stoping and the like. In addition, the computer equipment can also be provided with an operation window with display and input functions, and is used for visually displaying the constructed empty area three-dimensional model to a user and realizing the function corresponding to the operation instruction by receiving the operation instruction of the user on the empty area three-dimensional model. For example, the three-dimensional model of the empty area is rotated, a certain view field in the empty area is enlarged, the three-dimensional model of the empty area is cut, and the like.
In the embodiment of the application, the three-dimensional model of the empty area can be obtained by performing field detection on the empty area by means of a digital tool to obtain corresponding detection data and performing modeling by adopting the detection data. As an example of the embodiment of the present application, a vacant area may be detected by using a vacant area monitoring system (CMS).
CMS is mainly applicable to detection and precision measurement of underground stopes and empty areas, and the empty area is detected efficiently by adopting a CMS system, and the visual effect of detection results is good. The detection result can be directly used for calculating the volume and the roof area of the goaf, establishing a three-dimensional model of the goaf and the like, and further used for guiding related mining management and control processes such as goaf filling, pillar blasting design, stoping lean loss control, goaf stability analysis and the like.
Generally, the detection data obtained by detecting the empty region by using the CMS is three-dimensional point cloud data. According to the detection principle of CMS, these three-dimensional point cloud data can be stored in a circle. Therefore, when the three-dimensional model of the empty area is constructed based on the three-dimensional point cloud data, the topological relation among the point clouds can be established according to the storage rings, and therefore the entity triangular mesh model capable of accurately reflecting the form of the empty area is established. The entity triangular mesh model comprises a plurality of triangles in a triangular mesh form.
S102, determining a sectioning model for sectioning the three-dimensional model of the empty area, and sectioning the three-dimensional model of the empty area by adopting the sectioning model.
In the embodiment of the present application, the sectioning model may be a plane model for sectioning the established three-dimensional model of the empty area, and the sectioning model may be expressed by using a point-normal equation of a spatial plane.
According to the relevant knowledge of analytic geometry, any plane in space can be expressed as a point-normal equation as shown in the following formula (1):
A(x-x0)+B(y-y0)+C(z-z0)＝0……(1)
wherein, point M (x)0,y0,z0) Is a known point, vector, on a plane
Is the normal vector of the plane.
As described above, the computer device in the embodiment of the present application may provide an operation window for a user to input a corresponding operation instruction. Before sectioning the three-dimensional model of the empty area by using the sectioning model, a user should input a corresponding operation instruction in an operation window to generate the sectioning model. That is to say, before sectioning the three-dimensional model of the empty region, the computer device may determine a plane in the space according to an operation instruction input by the user in the operation window, and then use the plane to section the three-dimensional model of the empty region.
In general, it is desirable that a user directly input parameters such as coordinates of a known point in the plane and normal vector coordinates in an operation window to construct a sectioning model with great difficulty. Therefore, the method and the device for determining the sectioning model allow a user to directly pull out a line segment class at a selected point in the operation window to determine the sectioning model. For example, a user may determine a reference point in the operating window, then pull a line segment with the reference point as an end point, and the computer device may generate a plane based on the line segment. Or, the user can also move a known plane in the operation window to the target position through operations such as rotation and translation, and the computer device can use the plane at the target position as a sectioning model of the subsequent sectioning goaf three-dimensional model.
After determining the sectioning model, the computer device may employ the sectioning model to section the three-dimensional model of the void. Because the three-dimensional model of the empty area is a solid triangular mesh model comprising a plurality of triangles, the sectioning of the three-dimensional model of the empty area by the sectioning model can also be regarded as the sectioning of each triangle by the sectioning model.
S103, obtaining intersection line sections between the sectioning model and the plurality of triangles.
In the embodiment of the application, for each triangle in the three-dimensional model of the empty area, whether the sectioning model intersects with the triangle during sectioning can be judged. If the two lines intersect, the intersection line segment formed by the intersection can be intersected. The end point of the intersection line segment is the intersection point of the sectioning model and the triangle.
And S104, generating a dead zone section corresponding to the sectioning model according to the intersection line section.
In the embodiment of the application, each triangle intersected with the sectioning model can obtain a corresponding intersection line segment. The polygon obtained by combining all the intersecting line segments is a profile contour line, and a corresponding empty area profile can be generated according to the profile contour line.
In the embodiment of the application, by constructing the three-dimensional model of the empty area comprising a plurality of triangles, when the three-dimensional model of the empty area is sectioned by adopting the sectioning model, the sectioning process can be regarded as sectioning each triangle, so that the section of the empty area can be generated based on the intersecting line section formed by intersection according to whether the sectioning model and the triangle intersect or not. By adopting the method, the difficulty in generating the section of the dead zone is reduced, the efficiency and the accuracy of the section generation are improved, and accurate data basis can be provided for the related mining design and other work around the dead zone.
Referring to fig. 2, a schematic flow chart of steps of another method for generating a vacant area section according to an embodiment of the present application is shown, and specifically, the method may include the following steps:
s201, constructing a dead zone three-dimensional model, wherein the dead zone three-dimensional model is a solid triangular mesh model and comprises a plurality of triangles in a triangular mesh form.
In this embodiment, the three-dimensional model of the empty area may be an entity triangular mesh model constructed based on three-dimensional point cloud data obtained by performing field detection on the empty area by using a CMS system. The entity triangular mesh model can visually display the internal structure of the goaf to a user in a visual mode, and can also be used for guiding related mining management and control processes such as goaf filling, pillar blasting design, stoping lean loss control, goaf stability analysis and the like.
S202, detecting a section of the section generated in the operation window and used for sectioning the three-dimensional model of the empty area.
In the embodiment of the present application, before generating the section of the empty area, it is necessary to first determine a sectioning model for sectioning the three-dimensional model of the empty area. The section model can be regarded as a plane in space, which can be expressed by a point-normal equation.
In general, it is difficult to determine the sectioning model by inputting the coordinates of the known point on the plane and the normal vector coordinates of the plane directly in a computer device by a user. In the embodiment of the application, the cutting model can be generated by adopting a stay wire mode.
In the embodiment of the application, a user can determine a section of the dissection line in an operation window of the computer device and then generate the dissection model based on the section of the dissection line. In a specific implementation, a user may first select two points in the operation window, and determine a line segment as a dissection line segment based on the two points.
Illustratively, as shown in fig. 3, is a schematic diagram of a method for determining a cut-away model according to an embodiment of the present application. The two points selected by the user in the operation window may be P1、P2A line segment P generated based on these two points1P2I.e. a cut line segment. Wherein, P1Is the first end point of the cutting line segment, P2Is the second end of the cut line segment.
S203, determining a corresponding line segment of the dissection line segment in the empty area three-dimensional model.
The dissection line segment has a corresponding line segment in the three-dimensional model of the empty zone, and the corresponding line segment comprises a first corresponding point and a second corresponding point.
As shown in fig. 3, a line segment P is cut1P2The corresponding line segment in the three-dimensional model of the empty area is P1’P2', the corresponding line segment P1’P2' includes a first corresponding point P1' and a second corresponding point P2'. Wherein the first corresponding point P1Is a section P of a cutting line1P2First endpoint P of1Corresponding point in the three-dimensional model of the empty area, the second corresponding point P2Is a section P of a cutting line1P2Second endpoint P2Corresponding points in the three-dimensional model of the empty region. The two corresponding points P1' and P2' formation of corresponding line segment P1’P2' i.e. a line segment on a plane which is subsequently used to cut the empty space three-dimensional model.
And S204, generating the sectioning model according to the corresponding line segment, and sectioning the three-dimensional model of the empty area by adopting the sectioning model.
In the embodiment of the present application, the computer device may generate the sectioning model based on the corresponding line segment, that is, a plane containing the corresponding line segment. Note that, when a plane is generated based on a certain line segment, the direction of the plane may be directed in an arbitrary direction. The user can adjust the orientation of the plane in an operation window provided by the computer device according to actual needs to obtain a sectioning model meeting the actual needs.
Illustratively, initially, the computer device may randomly generate a plane from the corresponding line segment. The computer device may then rotate the plane to the appropriate orientation based on the detected user's instructions for the plane.
In a possible implementation manner of the embodiment of the present application, as shown in fig. 4, generating the sectioning model according to the corresponding line segment may specifically include the following sub-steps S2041 to S2043:
s2041, determining a reference point in the operation window and a target point of the reference point in the three-dimensional model of the empty area, wherein the reference point is any point outside the sectioning line in the operation window.
S2042, calculating a normal vector of a vertical line segment of the corresponding line segment pointing to the target point, wherein the normal vector of the vertical line segment is the normal vector of the section of the empty area.
S2043, calculating a point normal equation of the section of the empty area according to the normal vector of the vertical line segment, wherein the point normal equation is used for representing the sectioning model.
In the embodiment of the application, before the section model is generated, a reference point can be determined in the operation window on the basis of determining the section of the section, and a corresponding target point of the reference point in the three-dimensional model of the dead zone is determined. The reference point may be any point in the operating window that is outside the cut line. As shown in fig. 3, the reference point may be the point Q in fig. 3, and the corresponding target point is the point Q'.
Because any plane in the space can be expressed as a point normal equation, after the reference point and the target point are determined, the computer equipment can calculate the normal vector of the vertical line segment of the corresponding line segment pointing to the target point, and the normal vector of the vertical line segment is the normal vector of the section of the empty area. As shown in FIG. 3, the normal vector is the corresponding line segment P1’P2Normal vector of vertical segment' pointing to Q
In a specific implementation, the coordinate values of the first corresponding point, the second corresponding point and the target point, that is, in fig. 3 (P), may be obtained based on the three-dimensional model of the empty area1’，P2', Q') of the image. Then, according to the coordinate values, a normal vector of a perpendicular line segment of the corresponding line segment pointing to the target point is calculated, and then a point normal equation of a plane corresponding to the sectioning model is obtained.
S205, obtaining intersection line sections between the sectioning model and the plurality of triangles.
In a possible implementation manner of the embodiment of the present application, when the intersecting line segment between the sectioning model and the plurality of triangles is obtained, the plurality of triangles may be traversed, and whether any triangle intersects with the plane corresponding to the sectioning model is determined respectively. If any triangle is intersected with the plane corresponding to the sectioning model, the intersection point of the triangle and the plane is obtained, and intersection line sections between the sectioning model and the triangles are generated according to the intersection point.
In a specific implementation, for each point in any triangle, the coordinate value of the point and the point normal equation of the plane calculated in the foregoing step may be combined to calculate the position relationship between each point and the plane. In general, the positional relationship between each point on the triangle and the plane may include three cases where the point is located on the plane, the point is located in the positive region of the plane, and the point is located in the negative region of the plane. If a certain point is determined to be located on the plane through calculation, the triangle where the point is changed is considered to be intersected with the plane, and therefore a corresponding intersection line segment can be obtained.
It should be noted that, when a triangle is cut by the plane corresponding to the cut model, the triangle will be divided into a triangle and a quadrangle. For a quadrilateral, it can be split into two triangles by connecting one diagonal of the quadrilateral. Therefore, in the embodiment of the present application, after generating the intersection line segment between the sectioning model and the plurality of triangles according to the intersection point, the intersection line segment may also be used to section the triangles and generate new triangles. For the new triangle, the step of determining whether any of the triangles intersects the plane corresponding to the sectioning model, respectively, may be continued.
S206, combining each intersection line segment to obtain a profile contour line; and generating the section of the empty area according to the section contour line.
In the embodiment of the application, each triangle intersected with the sectioning model can obtain a corresponding intersection line segment. The polygon obtained by combining all the intersecting line segments is a profile contour line, and a corresponding empty area profile can be generated according to the profile contour line.
By adopting the method provided by the embodiment of the application, the cutting model can be generated in a pull line mode based on any two points selected by a user on computer equipment without inputting specific coordinate values to generate the cutting model, so that the generation difficulty of the cutting model is greatly reduced, and the generation efficiency of subsequent sections is improved.
It should be noted that, the sequence numbers of the steps in the foregoing embodiments do not mean the execution sequence, and the execution sequence of each process should be determined by the function and the inherent logic of the process, and should not constitute any limitation on the implementation process of the embodiments of the present application.
Referring to fig. 5, a schematic diagram of a device for generating a vacant zone section according to an embodiment of the present application is shown, and specifically, the device may include a building module 501, a determining module 502, a cutting module 503, an obtaining module 504, and a generating module 505, where:
the construction module 501 is configured to construct a three-dimensional model of a dead zone, where the three-dimensional model of the dead zone is a solid triangular mesh model, and the three-dimensional model of the dead zone includes a plurality of triangles in a triangular mesh form;
a determining module 502, configured to determine a sectioning model for sectioning the empty zone three-dimensional model;
a sectioning module 503, configured to adopt the sectioning model to section the three-dimensional model of the empty area;
an obtaining module 504, configured to obtain intersection line segments between the sectioning model and the plurality of triangles;
and a generating module 505, configured to generate a goaf section corresponding to the cutting model according to the intersection line segment.
In this embodiment of the application, the determining module 502 may be specifically configured to: detecting a section of sectioning line generated in an operation window and used for sectioning the three-dimensional model of the dead zone; determining a corresponding line segment of the dissection line segment in the empty area three-dimensional model; and generating the sectioning model according to the corresponding line segment.
In this embodiment of the application, the determining module 502 may be further configured to: determining a reference point in the operation window and a target point of the reference point in the empty area three-dimensional model, wherein the reference point is any point outside the sectioning line in the operation window; calculating a normal vector of a vertical line segment of the corresponding line segment pointing to the target point, wherein the normal vector of the vertical line segment is a normal vector of the section of the empty area; and calculating a point normal equation of the section of the empty area according to the normal vector of the vertical line segment, wherein the point normal equation is used for representing the sectioning model.
In this embodiment of the application, the tangent segment includes a first endpoint and a second endpoint, the corresponding segment includes a first corresponding point and a second corresponding point, the first corresponding point is a corresponding point of the first endpoint in the three-dimensional model of the empty area, and the second corresponding point is a corresponding point of the second endpoint in the three-dimensional model of the empty area, the determining module 502 may be further configured to: obtaining coordinate values of the first corresponding point, the second corresponding point and the target point based on the empty area three-dimensional model; and calculating a normal vector of a vertical line segment of the corresponding line segment pointing to the target point according to the coordinate values of the first corresponding point, the second corresponding point and the target point.
In this embodiment of the application, the obtaining module 504 may specifically be configured to: traversing a plurality of triangles, and respectively determining whether any triangle is intersected with the plane corresponding to the sectioning model; if any one of the triangles intersects with the plane corresponding to the sectioning model, acquiring an intersection point of the triangle and the plane; and generating intersection line sections between the sectioning model and the plurality of triangles according to the intersection points.
In this embodiment of the application, the obtaining module 504 may be further configured to: the intersection line segment is adopted to segment the triangle and generate a new triangle; and respectively determining whether any triangle intersects with the plane corresponding to the sectioning model or not for the new triangle.
In this embodiment of the present application, the generating module 505 may specifically be configured to: combining each intersection line segment to obtain a profile contour line; and generating the section of the empty area according to the section contour line.
For the apparatus embodiment, since it is substantially similar to the method embodiment, it is described relatively simply, and reference may be made to the description of the method embodiment section for relevant points.
Referring to fig. 6, a schematic structural diagram of a computer device according to an embodiment of the present application is shown. As shown in fig. 6, the computer apparatus 600 of the present embodiment includes: a processor 610, a memory 620, and a computer program 621 stored in the memory 620 and operable on the processor 610. The processor 610, when executing the computer program 621, implements the steps in the above-mentioned method for generating a vacant area profile, for example, steps S101 to S104 shown in fig. 1. Alternatively, the processor 610, when executing the computer program 621, implements the functions of each module/unit in each device embodiment described above, such as the functions of the modules 501 to 505 shown in fig. 5.
Illustratively, the computer program 621 may be divided into one or more modules/units, which are stored in the memory 620 and executed by the processor 610 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing specific functions, which may be used to describe the execution of the computer program 621 in the computer device 600. For example, the computer program 621 may be divided into a building module, a determining module, a cutting module, an obtaining module, and a generating module, and each module has the following specific functions:
the construction module is used for constructing a dead zone three-dimensional model, the dead zone three-dimensional model is a solid triangular mesh model, and the dead zone three-dimensional model comprises a plurality of triangles in a triangular mesh form;
the determining module is used for determining a sectioning model for sectioning the three-dimensional model of the empty area;
the sectioning module is used for sectioning the three-dimensional model of the dead zone by adopting the sectioning model;
the acquisition module is used for acquiring intersecting line segments between the sectioning model and the triangles;
and the generating module is used for generating an empty area section corresponding to the sectioning model according to the intersection line section.
The computer device 600 may be a desktop computer, a cloud server, or the like. The computer device 600 may include, but is not limited to, a processor 610, a memory 620. Those skilled in the art will appreciate that fig. 6 is only one example of a computer device 600 and is not intended to limit the computer device 600 and that the computer device 600 may include more or less components than those shown, or some of the components may be combined, or different components, e.g., the computer device 600 may also include input and output devices, network access devices, buses, etc.
The Processor 610 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The storage 620 may be an internal storage unit of the computer device 600, such as a hard disk or a memory of the computer device 600. The memory 620 may also be an external storage device of the computer device 600, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and so on, provided on the computer device 600. Further, the memory 620 may also include both internal storage units and external storage devices of the computer device 600. The memory 620 is used for storing the computer program 621 and other programs and data required by the computer device 600. The memory 620 may also be used to temporarily store data that has been output or is to be output.
The embodiment of the present application further discloses a computer device, which includes a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the method for generating the goaf section according to the foregoing embodiments when executing the computer program.
The embodiment of the application also discloses a computer-readable storage medium, which stores a computer program, and the computer program is executed by a processor to implement the method for generating the goaf section according to the foregoing embodiments.
The embodiment of the present application further discloses a computer program product, when the computer program product runs on a computer, the computer is caused to execute the method for generating the goaf section in the foregoing embodiments.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A method for generating a goaf profile is characterized by comprising the following steps:
constructing a dead zone three-dimensional model, wherein the dead zone three-dimensional model is a solid triangular mesh model and comprises a plurality of triangles in a triangular mesh form;
determining a sectioning model for sectioning the three-dimensional model of the dead zone, and sectioning the three-dimensional model of the dead zone by adopting the sectioning model;
acquiring intersection line sections between the sectioning model and the plurality of triangles;
and generating a dead zone section corresponding to the sectioning model according to the intersection line section.
2. The method of claim 1, wherein the determining a section model for sectioning the three-dimensional model of the vacant area comprises:
detecting a section of sectioning line generated in an operation window and used for sectioning the three-dimensional model of the dead zone;
determining a corresponding line segment of the dissection line segment in the empty area three-dimensional model;
and generating the sectioning model according to the corresponding line segment.
3. The method of claim 2, wherein said generating the sectioning model from the corresponding line segments comprises:
determining a reference point in the operation window and a target point of the reference point in the empty area three-dimensional model, wherein the reference point is any point outside the sectioning line in the operation window;
calculating a normal vector of a vertical line segment of the corresponding line segment pointing to the target point, wherein the normal vector of the vertical line segment is a normal vector of the section of the empty area;
and calculating a point normal equation of the section of the empty area according to the normal vector of the vertical line segment, wherein the point normal equation is used for representing the sectioning model.
4. The method of claim 3, wherein the dissection line segment comprises a first endpoint and a second endpoint, wherein the corresponding line segment comprises a first corresponding point and a second corresponding point, wherein the first corresponding point is a corresponding point of the first endpoint in the three-dimensional model of the goaf, wherein the second corresponding point is a corresponding point of the second endpoint in the three-dimensional model of the goaf, and wherein the calculating a normal vector of a perpendicular line segment of the corresponding line segment pointing to the target point comprises:
obtaining coordinate values of the first corresponding point, the second corresponding point and the target point based on the empty area three-dimensional model;
and calculating a normal vector of a vertical line segment of the corresponding line segment pointing to the target point according to the coordinate values of the first corresponding point, the second corresponding point and the target point.
5. The method according to any one of claims 1 to 4, wherein said obtaining an intersection segment between said sectioning model and a plurality of said triangles comprises:
traversing a plurality of triangles, and respectively determining whether any triangle is intersected with the plane corresponding to the sectioning model;
if any one of the triangles intersects with the plane corresponding to the sectioning model, acquiring an intersection point of the triangle and the plane;
and generating intersection line sections between the sectioning model and the plurality of triangles according to the intersection points.
6. The method of claim 5, further comprising, after generating intersection segments between the sectioning model and the plurality of triangles from the intersection points:
the intersection line segment is adopted to segment the triangle and generate a new triangle;
and aiming at the new triangle, respectively determining whether any triangle intersects with the plane corresponding to the sectioning model.
7. The method of any of claims 1-4 or 6, wherein generating a vacant zone profile corresponding to the slicing model from the intersection segment comprises:
combining each intersection line segment to obtain a profile contour line;
and generating the section of the empty area according to the section contour line.
8. An apparatus for generating a goaf profile, comprising:
the construction module is used for constructing a dead zone three-dimensional model, the dead zone three-dimensional model is a solid triangular mesh model, and the dead zone three-dimensional model comprises a plurality of triangles in a triangular mesh form;
the determining module is used for determining a sectioning model for sectioning the three-dimensional model of the empty area;
the sectioning module is used for sectioning the three-dimensional model of the dead zone by adopting the sectioning model;
the acquisition module is used for acquiring intersecting line segments between the sectioning model and the triangles;
and the generating module is used for generating an empty area section corresponding to the sectioning model according to the intersection line section.
9. A computer device comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor implements the method of generating a goaf section according to any one of claims 1 to 7 when executing the computer program.
10. A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the method of generating a goaf section in accordance with any one of claims 1 to 7.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111394257.6A CN114219915A (en) | 2021-11-23 | 2021-11-23 | Method and device for generating goaf section and computer equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111394257.6A CN114219915A (en) | 2021-11-23 | 2021-11-23 | Method and device for generating goaf section and computer equipment |
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| CN114219915A true CN114219915A (en) | 2022-03-22 |
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