CN112906114B - Self-consistent integration modeling method for geologic body and structural body - Google Patents
Self-consistent integration modeling method for geologic body and structural body Download PDFInfo
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Abstract
The invention discloses a self-consistent integration modeling method of a geologic body and a structural body, which comprises the steps of inputting geologic body and structural body geometric data to be integrated in batches according to a body-surface-line-point format; initially searching a geologic body-structure body pair with overlapped bounding boxes by adopting a bounding box method; performing Boolean operation of overlapping and intersection between surfaces of the overlapped geologic body-structure body pairs of each bounding box; aiming at all the surfaces, establishing a geometric topological relation of an oriented surface, an oriented ring, an oriented line segment and a vertex; aiming at all bodies, establishing a geometric topological relation of a directed body, a directed shell and a directed surface; giving the real overlapping state of each geologic body-structure body pair overlapped by the bounding boxes; the invention can conveniently and quickly integrate the natural geologic body and the designed structural body together, efficiently provides the geologic-structural integrated model for geotechnical engineering analysis and realizes the self-consistent integration of the geologic body and the structural body.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering and disaster prevention and reduction engineering such as civil construction, engineering geology, water conservancy and hydropower, traffic and the like, and particularly relates to a self-consistent integrated modeling method of a geologic body and a structural body, which is suitable for modeling of projects such as a side slope, a tunnel, a foundation pit and the like.
Background
Along with the engineering construction of township, civil construction, water conservancy and hydropower, traffic and the like in mountainous areas of China. The essence of the construction of these projects is the development of natural geobodies and the construction of artificial structures. Such as anti-slide piles in slopes, lining in tunnels, fender piles in foundation pits, and the like, and geologic bodies and structural bodies are in intergrowth, mutual existence and interaction. Therefore, the synergistic effect of the natural geologic body and the artificial structure body is a key problem in the technical fields of geotechnical engineering and disaster prevention and reduction engineering.
The modeling method is the basis of research on the synergistic effect of the three-dimensional geologic body and the structure body. For modeling three-dimensional geological bodies, the early 90 s of the 20 th century is paid attention by relevant scholars in the field of geological science, and relevant research progresses are mainly embodied in the aspects of suitable space data models, data structure definitions, three-dimensional geological modeling methods and the like. In the aspects of spatial data models and data structures, the spatial data models based on surface representation, voxel representation and mixture of two types are provided; in the aspect of a geological model construction method, a plurality of geological structure model construction methods aiming at geological body geometric morphology and geological model construction methods aiming at geological internal attributes are provided, and the software such as MapGIS is developed. For modeling a three-dimensional structure, a parameterized modeling method based on a CAD or BIM system is generally adopted at present, the theory and the application of the method are relatively mature, and commercial software such as AutoCAD, Revit and the like is available. As can be seen, the three-dimensional modeling techniques of individual bodies or structures have been extensively studied.
However, how to integrate natural geobodies with designed structures is a current barrier problem. At present, some commercial software such as Civil3D and Hypermesh can integrate the geologic body and the structural body, and the processing method is to input geometric model data of the geologic body and the structural body and realize the integration of the geologic body and the structural body through manual boolean operations such as intersection, truncation and combination. The method is very complicated when a large number of geologic bodies and structural bodies are processed, so that the development of an automatic integration modeling method of the geologic bodies and the structural bodies is urgently needed.
Disclosure of Invention
In view of the above defects or improvement requirements of the prior art, the present invention is to solve the problem that the integration method of the natural geologic body and the designed structural body in the prior art is tedious and time-consuming.
To achieve the above object, the present invention relates to: a self-consistent integrated modeling method for geologic bodies and structural bodies comprises the following steps: a self-consistent integrated modeling method for geologic bodies and structural bodies comprises the following steps:
step 1: inputting geometric data of the geologic body and the structural body to be integrated in batches according to a body-surface-line-point format;
step 2: analyzing the overlapping condition of the bounding box of the geologic body and the bounding box of the structure body, and primarily finding a geologic body-structure body pair with overlapped bounding boxes;
and step 3: performing Boolean operation of overlapping and intersection between surfaces of the overlapped geologic body-structure body pairs of each bounding box;
and 4, step 4: aiming at all the surfaces, establishing a geometric topological relation of an oriented surface, an oriented ring, an oriented line segment and a vertex through plane loop analysis;
and 5: aiming at all bodies, establishing a geometric topological relation of a directed body, a directed shell and a directed surface through spatial loop analysis;
step 6: giving the real overlapping state of each geologic body-structure body pair overlapped by the bounding boxes;
and 7: and obtaining an integrated geology-structure integrated model which comprises the geometric data of each directed body and the overlapping condition of each geologic body-structure body pair.
Further, in the step 2, a bounding box method is adopted to initially find a geologic body-structure body pair with overlapped bounding boxes, and the method specifically comprises the following steps:
2.1, aiming at each individual, finding the maximum and minimum x, y and z coordinates by using all point coordinates of each individual;
2.2, aiming at each individual, constructing an external rectangular body, namely a bounding box, by utilizing the maximum and minimum x, y and z coordinates of each individual;
step 2.3, selecting any one geologic body and one structural body, namely one geologic body-structural body pair, and performing primary analysis on the overlapped body state, and entering the step F if all the geologic body-structural body pairs are analyzed;
step 2.4, overlapping judgment is carried out by utilizing the bounding boxes of the geologic body and the structural body, if the maximum coordinate of the geologic body in any direction of the x axis, the y axis and the z axis is less than the minimum coordinate of the structural body or the minimum coordinate of the geologic body is more than the maximum coordinate of the structural body, the pair of the geologic body and the structural body is not overlapped, otherwise, the pair of the geologic body and the structural body is judged to be overlapped;
step 2.5, recording the overlapping state of the geologic body-structure body pair, and entering the step C;
and 2.6, finishing the primary analysis of the overlapped state body.
Further, the step 4 comprises the following steps:
4.1, selecting any surface of the geologic body or the structural body, carrying out plane loop analysis, and entering the step 4.7 if all the surfaces are analyzed;
4.2, searching all closed loops according to the directed line segments on the surface, including the line of the input geologic body and the structure body and the line formed by the intersection of the geologic body and the surface of the structure body;
4.3, aiming at any one closed loop on the surface, starting from any directed line segment of the closed loop, storing all directed line segments in a counterclockwise sequence, namely directed rings, and obtaining all directed rings on the surface;
4.4, analyzing the inclusion relationship between directed rings on the surface;
step 4.5, respectively finding directed surfaces containing directed line segments without loops on the opposite surfaces and vertexes formed by intersecting the surface surfaces of the geologic body and the structural body, and storing the directed surfaces;
step 4.6, forming a geometric topological relation of an oriented surface, an oriented ring, an oriented line segment and a vertex on the surface, and entering the step 4.1;
and 4.7, finishing the plane loop analysis.
Further, the step 4.4 analyzes the inclusion relationship between the directed rings on the surface by using a directed ring as an outer ring and other included rings as inner rings to form a directed surface if the directed ring does not include other rings.
Further, the step 5 comprises the following steps:
step 5.1, selecting any individual of the geologic body or the structural body, carrying out spatial loop analysis, and entering step F if all the individuals are analyzed;
step 5.2, searching all closed loops according to the oriented surface on the body;
step 5.3, storing directed surfaces forming the closed loop aiming at any one closed loop on the body, namely directed shells, and obtaining all directed shells on the surfaces;
step 5.4, analyzing the inclusion relationship between the oriented shells on the body;
step 5.5, forming a geometric topological relation of an oriented body, an oriented shell and an oriented surface on the body, and entering the step A;
and 5.6, ending the spatial loop analysis.
Further, the method for analyzing the inclusion relationship between the oriented shells on the body in the step 5.4 is as follows: if a directed shell does not comprise other rings, the directed shell is a directed body, and if the directed shell comprises one or more other shells, the directed shell is taken as an outer shell, and the other contained shells are taken as inner shells to form the directed body;
further, the real overlapping states of the geologic body-structure body pairs overlapped by each bounding box in the step 6 include five states of body overlapping, surface overlapping, line overlapping, point overlapping and non-overlapping.
Further, the step 6 specifically includes the following steps:
6.1, selecting any geologic body-structure body pair, carrying out overlapped state analysis, and entering the step 6.8 if the analysis of all the geologic body-structure body pairs is finished;
step 6.2, judging whether a common oriented body exists in the oriented bodies forming the geologic body and the structural body, if so, overlapping the existing bodies of the geologic body-structural body pair, and entering step 6.7;
step 6.3, judging whether a common oriented surface exists in the oriented surfaces forming the geologic body and the structural body, if so, overlapping the surfaces of the geologic body and the structural body, and entering step 6.7;
step 6.4, judging whether a public directional line exists in the directional lines forming the geologic body and the structural body, if so, overlapping the lines of the geologic body-structural body pair, and entering step 6.7;
step 6.5, judging whether a common vertex exists in the vertexes forming the geologic body and the structure body, if so, overlapping the points of existence of the geologic body-structure body pair, and entering step 6.7;
6.6, judging that the geologic body-structure body pair does not have a common vertex, an oriented line, an oriented surface and an oriented body and is in a non-overlapping state;
6.7, recording the real overlapping state of the geologic body-structure body pair, and entering the step 6.1;
and 6.8, ending the analysis of the overlapping state.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
(1) the invention relates to a self-consistent integration modeling method of a geologic body and a structural body, which utilizes geometrical data of a geologic model and a structural model, such as body-surface-line-point, and the like, adopts three-dimensional computational geometry and combined topology to carry out Boolean operation on the geologic body and the structural body, establishes a geometric topological relation of an oriented surface-an oriented ring-an oriented line segment-a vertex on a plane, establishes a geometric topological relation of an oriented body-an oriented shell-an oriented surface in space, and gives an overlapping state between the geologic body and the structural body, thereby realizing self-consistent integration of the geologic body and the structural body;
(2) the self-consistent integration modeling method of the geologic body and the structural body can conveniently and quickly integrate the natural geologic body and the designed structural body together, efficiently provides a geology-structure integrated model for geotechnical engineering analysis, and has the advantages of advanced technology, complete theory, high calculation efficiency and the like.
Drawings
FIG. 1 is a schematic flow chart of a preferred embodiment of the present invention;
FIG. 2 is a schematic diagram of the geometric topological relation of the integrated geologic-structural model in accordance with the preferred embodiment of the present invention;
FIG. 3 is a plan loop analysis case according to the preferred embodiment of the present invention;
FIG. 4 is a schematic diagram of the true overlap condition of the geologic body-structure pair (from left to right, sequentially from top to bottom, body overlap, face overlap, line overlap, point overlap and no overlap) according to the preferred embodiment of the present invention;
FIG. 5 is a self-consistent integration modeling example of geologic body and structure (model of structure to be integrated, model of geologic body, left side of structure, right side of geologic body model);
FIG. 6 is a self-consistent integrated modeling example of geologic body and structure (integrated geologic-structure integrated model) according to the present invention;
FIG. 7 is a self-consistent integrated modeling example of a geologic body and a structure body (geologic body part in an integrated model) according to the present invention;
FIG. 8 is a self-consistent integrated modeling example of a geologic body and a structure (structure part in an integrated model) according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The invention relates to a self-consistent integrated modeling method for a geologic body and a structural body, which comprises the following steps:
referring to fig. 1 to 2, step 1: inputting geometric data of the geologic body and the structural body to be integrated in batches according to a body-surface-line-point format;
step 2: initially searching a geologic body-structure body pair with overlapped bounding boxes by adopting a bounding box method; the method comprises the following specific steps:
2.1, aiming at each individual, finding the maximum and minimum x, y and z coordinates by using all point coordinates of each individual;
2.2, aiming at each individual, constructing an external rectangular body, namely a bounding box, by utilizing the maximum and minimum x, y and z coordinates of each individual;
step 2.3, selecting any one geologic body and one structural body, namely one geologic body-structural body pair, and performing primary analysis on the overlapped body state, and entering the step F if all the geologic body-structural body pairs are analyzed;
step 2.4, overlapping judgment is carried out by utilizing the bounding boxes of the geologic body and the structural body, if the maximum coordinate of the geologic body in any direction of the x axis, the y axis and the z axis is less than the minimum coordinate of the structural body or the minimum coordinate of the geologic body is more than the maximum coordinate of the structural body, the pair of the geologic body and the structural body is not overlapped, otherwise, the pair of the geologic body and the structural body is judged to be overlapped;
step 2.5, recording the overlapping state of the geologic body-structure body pair, and entering the step C;
and 2.6, finishing the primary analysis of the overlapped state body.
And step 3: performing Boolean operation of overlapping and intersection between surfaces of the overlapped geologic body-structure body pairs of each bounding box;
and 4, step 4: aiming at all the surfaces, establishing a geometric topological relation of an oriented surface, an oriented ring, an oriented line segment and a vertex through plane loop analysis; FIG. 3 is a case of a planar loop analysis, which is implemented as follows:
step 4.1, selecting any surface of the geologic body or the structure body, such as the surface ABCD in the figure 3, performing plane loop analysis, and entering the step 7 if all the surfaces are analyzed;
step 4.2, searching all closed loops according to the directed line segments on the surface, wherein the directed line segments comprise lines (AB, BC, CD and DA) for inputting the geologic body and the structural body and lines (EF, GH, HI, IJ, JG and LM) formed by intersecting the geologic body and the surface of the structural body;
4.3, aiming at any one closed loop on the surface, starting from any directed line segment of the closed loop, storing all directed line segments in a counterclockwise sequence, namely directed loops, and obtaining all directed loops (loops ABCFEA, DEFD and GHIJG) on the surface;
step 4.4, analyzing the inclusion relationship between the directed rings on the surface, if one directed ring does not comprise other rings, the directed ring is a directed surface (surface DEF, surface GHIJ), if one directed ring comprises one or more other rings, the directed ring is taken as an outer ring, and the included other rings are taken as inner rings to form one directed surface (outer ring ABCFEA, inner ring GHIJG);
step 4.5, finding the directed surfaces containing the directed line segments (such as LM) which do not form a loop on the opposite surface and the vertexes (such as K) formed by intersecting the surface of the geologic body and the surface of the structure body respectively, and storing the directed surfaces;
step 4.6, forming a geometric topological relation of an oriented surface, an oriented ring, an oriented line segment and a vertex on the surface, and entering the step 1;
and 4.7, finishing the plane loop analysis.
And 5: aiming at all bodies, establishing a geometric topological relation of a directed body, a directed shell and a directed surface through spatial loop analysis; the method comprises the following steps:
step 5.1, selecting any individual of the geologic body or the structural body, carrying out spatial loop analysis, and entering step F if all the individuals are analyzed;
step 5.2, searching all closed loops according to the oriented surface on the body;
step 5.3, storing directed surfaces forming the closed loop aiming at any one closed loop on the body, namely directed shells, and obtaining all directed shells on the surfaces;
step 5.4, analyzing the inclusion relationship between the oriented shells on the body; if a directed shell does not include other rings, the directed shell is a directed body, and if the directed shell comprises one or more other shells, the directed shell is taken as an outer shell, and the other contained shells are taken as inner shells to form the directed body.
Step 5.5, forming a geometric topological relation of an oriented body, an oriented shell and an oriented surface on the body, and entering the step A;
and 5.6, ending the spatial loop analysis.
Step 6: giving the real overlapping state of each geologic body-structure body pair overlapped by the bounding boxes; the real overlapping states of the geologic body-structure body pairs overlapped by each bounding box comprise five states of body overlapping, surface overlapping, line overlapping, point overlapping and non-overlapping.
The step 6 specifically comprises the following steps:
6.1, selecting any geologic body-structure body pair, carrying out overlapped state analysis, and entering the step 6.8 if the analysis of all the geologic body-structure body pairs is finished;
step 6.2, judging whether a common oriented body exists in the oriented bodies forming the geologic body and the structural body, if so, overlapping the existing bodies of the geologic body-structural body pair, and entering step 6.7;
step 6.3, judging whether a common oriented surface exists in the oriented surfaces forming the geologic body and the structural body, if so, overlapping the surfaces of the geologic body and the structural body, and entering step 6.7;
step 6.4, judging whether a public directional line exists in the directional lines forming the geologic body and the structural body, if so, overlapping the lines of the geologic body-structural body pair, and entering step 6.7;
step 6.5, judging whether a common vertex exists in the vertexes forming the geologic body and the structure body, if so, overlapping the points of existence of the geologic body-structure body pair, and entering step 6.7;
6.6, judging that the geologic body-structure body pair does not have a common vertex, an oriented line, an oriented surface and an oriented body and is in a non-overlapping state;
6.7, recording the real overlapping state of the geologic body-structure body pair, and entering the step 6.1;
and 6.8, ending the analysis of the overlapping state.
And 7: and obtaining an integrated geology-structure integrated model which comprises the geometric data of each directed body and the overlapping condition of each geologic body-structure body pair.
The real overlapping state of the geologic body-structure body pair can be judged by adopting the steps, and the real overlapping state comprises body overlapping, surface overlapping, line overlapping, point overlapping and non-overlapping as shown in figure 4. The self-consistent integration of the geologic body and the structural body can be realized, and fig. 5 shows the input model of the geologic body and the structural body to be integrated; FIG. 6 is a geological-structural integration model integrated using the method of the present invention; FIG. 7 is a portion of a geologic volume in an integrated model; fig. 8 is a structural part in the integrated model.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. A self-consistent integrated modeling method for geologic bodies and structural bodies is characterized by comprising the following steps:
step 1: inputting geometric data of the geologic body and the structural body to be integrated in batches according to a body-surface-line-point format;
step 2: analyzing the overlapping condition of the bounding box of the geologic body and the bounding box of the structure body, and primarily finding a geologic body-structure body pair with overlapped bounding boxes;
and step 3: performing Boolean operation of overlapping and intersection between surfaces of the overlapped geologic body-structure body pairs of each bounding box;
and 4, step 4: aiming at any surface of a geologic body or a structural body, establishing a geometric topological relation of an oriented surface, an oriented ring, an oriented line segment and a vertex through plane loop analysis;
the step 4 comprises the following steps:
4.1, selecting any surface of the geologic body or the structural body, carrying out plane loop analysis, and entering the step 4.7 if all the surfaces are analyzed;
4.2, searching all closed loops according to the directed line segments on the surface, including the line of the input geologic body and the structure body and the line formed by the intersection of the geologic body and the surface of the structure body;
4.3, aiming at any one closed loop on the surface, starting from any directed line segment of the closed loop, storing all directed line segments in a counterclockwise sequence, namely directed rings, and obtaining all directed rings on the surface;
4.4, analyzing the inclusion relationship between directed rings on the surface;
step 4.5, respectively finding directed surfaces containing directed line segments without loops on the opposite surfaces and vertexes formed by intersecting the surface surfaces of the geologic body and the structural body, and storing the directed surfaces;
step 4.6, forming a geometric topological relation of an oriented surface, an oriented ring, an oriented line segment and a vertex on the surface, and entering the step 4.1;
step 4.7, finishing the plane loop analysis;
and 5: aiming at any individual of a geologic body or a structural body, establishing a geometric topological relation of an oriented body, an oriented shell and an oriented surface through spatial loop analysis;
step 6: giving the real overlapping state of each geologic body-structure body pair overlapped by the bounding boxes; the step 6 specifically comprises the following steps:
6.1, selecting any geologic body-structure body pair, carrying out overlapped state analysis, and entering the step 6.8 if the analysis of all the geologic body-structure body pairs is finished;
step 6.2, judging whether a common oriented body exists in the oriented bodies forming the geologic body and the structural body, if so, overlapping the existing bodies of the geologic body-structural body pair, and entering step 6.7;
step 6.3, judging whether a common oriented surface exists in the oriented surfaces forming the geologic body and the structural body, if so, overlapping the surfaces of the geologic body and the structural body, and entering step 6.7;
step 6.4, judging whether a public directional line exists in the directional lines forming the geologic body and the structural body, if so, overlapping the lines of the geologic body-structural body pair, and entering step 6.7;
step 6.5, judging whether a common vertex exists in the vertexes forming the geologic body and the structure body, if so, overlapping the points of existence of the geologic body-structure body pair, and entering step 6.7;
6.6, judging that the geologic body-structure body pair does not have a common vertex, an oriented line, an oriented surface and an oriented body and is in a non-overlapping state;
6.7, recording the real overlapping state of the geologic body-structure body pair, and entering the step 6.1;
6.8, finishing the analysis of the overlapping state;
and 7: and obtaining an integrated geology-structure integrated model which comprises the geometric data of each directed body and the overlapping condition of each geologic body-structure body pair.
2. The self-consistent integrated geologic body and structure modeling method according to claim 1, wherein said bounding box method is used in step 2 to initially find the geologic body-structure body pair with overlapped bounding boxes, and the method comprises the following specific steps:
2.1, aiming at each individual, finding the maximum and minimum x, y and z coordinates by using all point coordinates of each individual;
2.2, aiming at each individual, constructing an external rectangular body, namely a bounding box, by utilizing the maximum and minimum x, y and z coordinates of each individual;
2.3, selecting any one geologic body and one structural body, namely one geologic body-structural body pair, and carrying out primary analysis on the overlapped body state, and entering the step 2.6 if all the geologic body-structural body pairs are analyzed; step 2.4, overlapping judgment is carried out by utilizing the bounding boxes of the geologic body and the structural body, if the maximum coordinate of the geologic body in any direction of the x axis, the y axis and the z axis is less than the minimum coordinate of the structural body or the minimum coordinate of the geologic body is more than the maximum coordinate of the structural body, the pair of the geologic body and the structural body is not overlapped, otherwise, the pair of the geologic body and the structural body is judged to be overlapped;
step 2.5, recording the overlapping state of the geologic body-structure body pair, and entering the step 2.3;
and 2.6, finishing the primary analysis of the overlapped state body.
3. A method of self-consistent integrated modelling of a geologic body and a structure according to claim 1, wherein said step 4.4 of analyzing the containment relationship between directed rings on a surface is such that if a directed ring does not include other rings, it is itself a directed surface, and if a directed ring contains one or more other rings, then a directed surface is formed with this directed ring as an outer ring and the other rings contained as inner rings.
4. The method of self-consistent integrated modeling of geobodies and structures according to claim 1, wherein said step 5 comprises the steps of:
step 5.1, selecting any individual of the geologic body or the structural body, carrying out spatial loop analysis, and entering step 5.6 if all the bodies are analyzed; step 5.2, searching all closed loops according to the oriented surface on the body;
step 5.3, storing directed surfaces forming the closed loop aiming at any one closed loop on the body, namely directed shells, and obtaining all directed shells on the surfaces;
step 5.4, analyzing the inclusion relationship between the oriented shells on the body;
step 5.5, forming a geometric topological relation of an oriented body, an oriented shell and an oriented surface on the body, and entering step 5.1;
and 5.6, ending the spatial loop analysis.
5. A method of self-consistent integrated modelling of a geologic body and a structure according to claim 4, wherein the method of analysing the containment relationships between oriented shells on a body in step 5.4 is: if a directed shell does not include other rings, the directed shell is a directed body, and if the directed shell comprises one or more other shells, the directed shell is taken as an outer shell, and the other contained shells are taken as inner shells to form the directed body.
6. The method according to claim 1, wherein the real overlapping states of each bounding box overlapped geologic body-structure body pair in step 6 comprise five states of body overlap, face overlap, line overlap, point overlap and no overlap.
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