CN111950051A - BIM-based three-dimensional geological modeling and geological model-based construction application method - Google Patents
BIM-based three-dimensional geological modeling and geological model-based construction application method Download PDFInfo
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Abstract
The invention discloses a BIM-based three-dimensional geological modeling and a construction application method based on a geological body model, wherein the BIM-based three-dimensional geological modeling comprises the steps of establishing a spatial information database according to various exploration data, and then establishing the geological body model: reading exploration data such as point cloud data or contour lines of the earth surface of the modeling area from a spatial information database, and automatically creating an earth surface model; accessing a surface model into a surface and PerimeterCurrves node packet, and picking up a topographic surface contour line; shifting and copying the contour line to the height of the lowest point of the stratum; grouping the two edge contour lines, stretching and lofting the two edge contour lines into a body, and creating a geological entity; leading in a stratum surface model, and carrying out Boolean operation on the geological entity and the stratum surface model; and writing geological information, and outputting/storing a geological body model. The invention realizes automatic modeling, can seamlessly butt joint the building BIM model, can greatly improve the simulation of the traditional BIM application such as early planning design, earthwork calculation, field construction simulation and the like, and greatly improves the accuracy of geological numerical analysis.
Description
Technical Field
The invention belongs to the technical field of geotechnical engineering based on BIM, and particularly relates to a three-dimensional geological modeling based on BIM and a construction application method based on a geological body model.
Background
Geological information is usually obtained as basic data by drilling and the like, and drilling histograms, profiles and survey reports are used as main expression forms of the information. The method has long-term engineering experience, and the mode and the form are more standard and professional, but also has certain defects, including inconvenient information lookup, strong specialization degree, stacking of a large amount of statistical data, no effective three-dimensional display effect and the like. However, the BIM can interact a large amount of information with numerous software by virtue of strong three-dimensional rendering capability and information integration capability, is combined with a GIS system, improves the efficiency, and provides a new idea for the development direction of three-dimensional geological modeling.
With the advanced application of the BIM technology in construction engineering, more and more users need to model the stratum. In the process of three-dimensional visualization of geological results in geotechnical engineering investigation, manual modeling by directly utilizing Revit software has certain limitation, and the method is specifically represented as follows:
(1) drilling data are manually input, and rock-soil layer modeling work is manually carried out, so that the modeling workload is large and tedious, errors are easy to occur, the modeling efficiency is extremely low, and the realization difficulty is too large;
(2) when the three-dimensional geological model is established, only conventional rock and soil strata can be processed, common phenomena such as a lens body and a pinch-out rock and soil stratum are difficult to process, and only rough modeling of the rock and soil strata can be performed;
(3) foundation pit excavation simulation is carried out by utilizing Revit software, and only manual operation can be carried out on one rock-soil layer at the same time;
(4) lack of computational and model output interfaces associated with the field of geotechnical engineering investigation;
(5) the BIM application to three-dimensional geological models is not well defined.
(6) And a more accurate geological information model cannot be established for the complex geological body.
In summary, the BIM of the three-dimensional geological model at the present stage has many disadvantages and shortcomings, and needs to be improved in the direction of increasing the automation degree and efficient and accurate modeling, and in the application of the model.
Disclosure of Invention
In order to solve the problems in the prior art, the invention aims to provide a BIM-based three-dimensional geological modeling and a construction application method based on a geological body model.
The technical scheme adopted by the invention is as follows:
the BIM-based three-dimensional geological modeling method comprises the steps of establishing a spatial information database according to various exploration data and then establishing a geological body model, wherein the step of establishing the geological body model comprises the following steps:
reading exploration data such as point cloud data or contour lines of the earth surface of the modeling area from a spatial information database, and automatically creating an earth surface model;
accessing a surface model into a surface and PerimeterCurrves node packet, and picking up a topographic surface contour line;
shifting and copying the contour line to the height of the lowest point of the stratum;
grouping the two edge contour lines, stretching and lofting the two edge contour lines into a body, and creating a geological entity;
leading in a stratum surface model, and performing Boolean operation on a geological entity and a stratum surface model to generate a geological body model;
and writing geological information, and outputting/storing a geological body model.
On the basis of the technical scheme, the three-dimensional geological modeling method based on the BIM is adopted, and the geological information comprises lithology, geological age, physical and mechanical parameters and colors.
On the basis of the technical scheme, the BIM-based three-dimensional geological modeling method further comprises the step of arranging exploration data to obtain modeling area data, wherein the arranging step is as follows:
extracting exploration data from a spatial information database, wherein the exploration data comprises surface point cloud data and surface DEM data, the surface DEM data comprises contour line data, and a data processing type is selected, the data processing type comprises point cloud data processing, drill point layered interpolation encryption and formation boundary point interpolation encryption, the formation boundary point is obtained by extracting key nodes of a spline curve from a formation section line, the precision is low when the data is generally sparse and used for geological modeling, and an interpolation modeling program is adopted to encrypt the data, so that the precision is improved;
if the selected data processing type is point cloud data processing, setting the processing accuracy and the lubrication degree of the point cloud after noise removal, and outputting data after calculation by a fitting algorithm;
if the selected data processing type is the hierarchical interpolation encryption of the drilling points, the interpolation precision and range are set, and data are output after the operation of a spatial interpolation fitting algorithm;
if the selected data processing type is stratum boundary point interpolation encryption, curvature size between adjacent points is set, and data is output after fitting algorithm operation, namely the relaxation degree of a curve formed by the encrypted points is represented.
On the basis of the technical scheme, the BIM-based three-dimensional geological modeling method comprises the following steps:
reading the earth surface longitude, latitude and elevation point information of the modeling area from the spatial information database;
setting the range and precision of a modeling area;
loading an earth surface Revit family file to generate a closed curved surface;
and attaching the earth surface image, generating an earth surface model, and outputting/storing the earth surface model.
On the basis of the technical scheme, the method for establishing the stratigraphic surface model based on the BIM comprises the following steps:
reading the processed data of each stratum in the modeling area from a spatial information database;
generating each stratum surface by using a fitting algorithm according to longitude, latitude and elevation point information of all stratum demarcation points in the drilling data model, and automatically creating a stratum surface model;
judging whether stratum surfaces are mutually staggered, if so, judging whether the data of the modeling area processed by each stratum is wrong; if not, carrying out stratum information loading and outputting/storing a stratum surface model;
judging whether the data of the modeling area processed by each stratum is wrong or not, if so, correcting the data processed by each stratum; and if not, performing Boolean operation on the staggered stratum, loading stratum information, and outputting/storing the stratum surface model.
On the basis of the technical scheme, the BIM-based three-dimensional geological modeling method further comprises the step of setting the corresponding stratum color and material by self-definition for each stratum surface.
On the basis of the technical scheme, the formation information comprises formation physical and mechanical parameters based on the BIM three-dimensional geological modeling method.
On the basis of the technical scheme, the BIM-based three-dimensional geological modeling method comprises the following steps:
reading the drilling data of the modeling area from the spatial information database, and automatically creating a drilling data model;
judging whether the ground surface model conflicts or is unreasonable with the ground surface generated by the drilling data model, and if yes, correcting the drilling data of the modeling area; if not, automatic numbering and custom attribute information loading are carried out, and a drilling data model is output/stored;
on the basis of the technical scheme, the three-dimensional geological modeling method based on the BIM is adopted, and the drilling data comprises drilling positioning points, stratum demarcation points, hole depth, hole diameter and stratum physical and mechanical parameters.
On the basis of the technical scheme, the three-dimensional geological modeling method based on the BIM is characterized in that the custom attribute information comprises formation physical and mechanical parameters and user custom parameters.
On the basis of the technical scheme, the BIM-based three-dimensional geological modeling method comprises the following specific implementation method of automatically creating a drilling data model:
extracting stratum demarcation points from the drilling data of the modeling areas, wherein the stratum demarcation points comprise longitude, latitude and elevation information, and calculating the absolute height of each stratum of each drilling data;
taking each stratum boundary point as an origin, making a geometric figure on an X-Y plane, taking the geometric figure as an initial position, and stretching downwards in a Z-axis direction to form a geometric cylindrical body, wherein the stretching distance is the absolute height of the next stratum of the current stratum boundary point;
and (4) importing the drilling columnar Revit family file, and automatically creating a drilling data model.
On the basis of the technical scheme, the BIM-based three-dimensional geological modeling method further comprises the step of setting the corresponding rock stratum color and material by self-definition on the geometric cylindrical body.
On the basis of the technical scheme, the BIM-based three-dimensional geological modeling method comprises the following steps: and extracting longitude, latitude and elevation information of all top stratum demarcation points in the drilling data model, and generating a ground surface through a fitting algorithm, wherein the fitting algorithm is RBF or Kriging.
The construction application method based on the geological body model comprises the steps of establishing a geological structure phenomenon model according to a geological body model output/stored by a BIM-based three-dimensional geological modeling method, and then performing BIM construction application on the geological body model;
the method for creating the geologic structure phenomenon model comprises the following steps:
leading in DWG format fault lines, and picking up curves by adopting an automatic desk-review self-carried spline curve picking tool;
inputting fault strike, inclination and dip parameters;
the step of breaking, stretching and lofting is a closed fault plane;
inputting a geologic body model, performing Boolean operation on the fault plane and the geologic body model, and dividing the geologic body;
and writing in the geological related geological attributes, and outputting/storing a geological structure phenomenon model.
On the basis of the technical scheme, the construction application method based on the geological body model comprises the following steps:
introducing a field trace after the geologic body is excavated, calling a split.
Dividing the geologic body into minimum construction unit volume quantities and numbering;
importing a construction progress scheme and associating the construction progress scheme with the divided geologic body;
calling a date now program package to read the system time setting time relation mapping, carrying out construction progress scheme simulation, and judging whether the scheme is feasible or not;
if the cost is calculated, judging whether the scheme is optimal, and if so, determining and executing the scheme; if not, the procedure is modified, the cost accounting is carried out again, and whether the scheme is optimal or not is judged again;
and if not, carrying out scheme change, returning and importing the construction progress scheme, and associating with the divided geologic body.
The invention has the beneficial effects that:
according to the invention, geological exploration data butt joint is realized, wherein the butt joint comprises an unmanned aerial vehicle three-dimensional live-action model, a three-dimensional laser scanner, drilling data, a geological profile, a remote sensing image, field layering data, plane hole arrangement coordinates and the like, and engineering personnel only need to input related exploration data in a classified manner, so that automatic modeling can be realized.
The invention can seamlessly butt joint the building BIM model, and can greatly improve the simulation of the traditional BIM application such as early planning design, earthwork calculation, field construction simulation and the like.
The invention can be butted with numerical simulation software after being converted in BIM software through IFC (Industry Foundation Classes) format, thereby greatly improving the accuracy of geological numerical analysis.
The method comprises the steps of exploration data sorting, drilling data model creation, earth surface model creation, geologic body model creation and the like. The BIM geological three-dimensional model is generated, three-dimensional visualization can be well achieved, reference is provided for engineering design, three-dimensional geological modeling in an exploration stage and BIM application, and the defects that the existing three-dimensional geological modeling BIM application cannot be combined with actual engineering for design and the like are overcome.
Drawings
Fig. 1 is a system block diagram of embodiment 1 of the present invention.
Fig. 2 is a schematic flow chart of the system of embodiment 1 of the present invention.
FIG. 3 is a schematic diagram of survey data consolidation process in example 1 of the present invention.
Fig. 4 is a schematic diagram of a process of creating a surface model according to embodiment 1 of the present invention.
Fig. 5 is a schematic diagram of a drilling data model creation process in embodiment 1 of the present invention.
Fig. 6 is a schematic flow chart of automatically creating a drilling data model according to embodiment 1 of the present invention.
Fig. 7 is a schematic diagram of a process of creating a formation model according to embodiment 1 of the present invention.
Fig. 8 is a schematic diagram of a geologic body model creation process in embodiment 1 of the present invention.
Fig. 9 is a diagram showing the effect of the surface model according to example 1 of the present invention.
Fig. 10 is an effect display diagram of the surface model & borehole data model according to example 1 of the present invention.
Fig. 11 is an effect display diagram of the stratigraphic surface model of example 1 of the present invention.
Fig. 12 is an effect display diagram of the geologic body model of example 1 of the present invention.
Fig. 13 is a schematic diagram of a geologic structure phenomenon model creation process in embodiment 2 of the present invention.
Fig. 14 is a schematic view of the geological body BIM construction application flow of embodiment 2 of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
Example 1:
as shown in fig. 1 to 8, the BIM-based three-dimensional geological modeling method of the present embodiment includes a step of establishing a spatial information database according to various exploration data, and then performing geological body model creation, where the step of creating a geological body model includes:
establishing a ground surface model;
creating a drilling data model;
creating a ground level model;
and (4) creating a geologic body model.
Due to the ground surface point cloud data extracted from the spatial information database, more noise points are often not directly used for creating the ground surface. Meanwhile, the earth surface DEM data extracted from the satellite remote sensing map has low precision, is not suitable for small-range accurate modeling, and is not continuous in stratum interpore data, and the like, and the data needs to be subjected to secondary processing and then used for later-stage modeling.
Therefore, the BIM-based three-dimensional geological modeling method further comprises the step of sorting exploration data to obtain modeling area data, wherein the sorting step is as follows:
extracting exploration data from a spatial information database, wherein the exploration data comprises earth surface point cloud data and earth surface DEM data, selecting a data processing type, wherein the data processing type comprises point cloud data processing, drill point layered interpolation encryption and stratum demarcation point interpolation encryption, the stratum demarcation point is obtained by extracting key nodes of a spline curve from a stratum section line, the precision is low when the stratum demarcation point is generally sparse and used for geological modeling, and an interpolation modeling program is adopted to encrypt the stratum demarcation point, so that the precision is improved;
if the selected data processing type is point cloud data processing, setting the processing accuracy and the lubrication degree of the point cloud after noise removal, and outputting data after calculation by a fitting algorithm;
if the selected data processing type is the hierarchical interpolation encryption of the drilling points, the interpolation precision and range are set, and data are output after the operation of a fitting algorithm;
if the selected data processing type is stratum boundary point interpolation encryption, curvature size between adjacent points is set, and data is output after fitting algorithm operation, namely the relaxation degree of a curve formed by the encrypted points is represented.
The fitting algorithm is RBF or Kriging.
RBF：
The method can carry out fast interpolation in a multidimensional space and is easy to realize. Compared with proxy models such as a support vector machine and a neural network, the method is simple in model, and the required model parameters can be solved through simple matrix operation. The basic radial basis interpolation function can be expressed as:
in the formula:
a prediction model of the actual elevation G (-) since it is an interpolation model, the two values are equal at the drilling point; u is the horizontal coordinate at any point,
horizontal coordinates of the drilling points; s is a set of all drilling points; Ψ (-) is a kernel function; rhoiIs a coefficient to be determined, i ═ 1,2, … N; and N is the number of drilling points. And respectively substituting the horizontal coordinate and the elevation value G of each drilling point into the formula to obtain:
in the formula: ΨijAnd performing kernel function operation on the horizontal coordinates of the two drilling points to obtain values. Equation (2) can be written as a matrix form G ═ Ψ ρ, and thus the unknown coefficient matrix ρ ═ Ψ ρ can be solved-1G. In order to effectively reduce the setting of artificial parameters and improve the stability of the model, the present embodiment employs a linear kernel function Ψ (a) ═ a. For multi-dimensional nonlinear interpolation, the above formula can obtain good effect. In the embodiment, a wire is additionally arranged on the basis of the formula (2)And a linear term to improve the interpolation stability of the model to the linear problem, wherein the most radial basis function proxy model is expressed as:
in the formula: n is the component number in the point u, and for the drilling point, the drilling point only contains horizontal coordinates (longitude and latitude), so that n is 2; b0And bjIs an unknown coefficient to be determined; u. ofjJ is the jth element of u, 1,2, … n. To solve for these additional n +1 parameters, the above equation can finally be written as a matrix form, taking into account that the coefficients ρ and the linear terms satisfy the orthogonal design:
in the formula: b is an unknown coefficient vector to be determined; f corresponds to the linear term part in equation (3). At this point, all unknown parameters in the RBF model can be solved immediately by utilizing the existing drilling set S and the corresponding actual elevation value G thereof and combining a matrix algorithm, so that an interpolation model is established.
Kriging：
Kriging is another powerful tool for constructing interpolation models. The Kriging model is an interpolation method based on statistical hypothesis, and is widely applied to geological interpolation analysis, and the model can be expressed as follows:
in the formula: l (u) is a function representing the trend of G (u) obtained by regression analysis (a common Kriging model usually adopts a constant); where z (u) is a smooth random gaussian process with a mean of zero. Any two horizontal coordinate points u(i)And u(j)The covariance between is defined as:
wherein the content of the first and second substances,
is the process variance, and R (-) is the correlation kernel (e.g., exponential, spherical, linear, or gaussian, etc. model). The gaussian model is a widely used kernel function that can be expressed as:
in the formula: thetakAre unknown coefficients. These unknown coefficients (including L (u) in the formula (5) and L (u) in the formula (6))
) May be found using maximum likelihood estimation based on all current drill points. Once these coefficients are determined, the elevation values at any point other than the borehole point can be predicted based on equation (5) in conjunction with the current borehole point.
The method for creating the earth surface model comprises the following steps:
reading a modeling area ground surface longitude and latitude and elevation point file (. xyz format) from a spatial information database;
setting the range and precision of a modeling area;
loading an earth surface Revit family file to generate a closed curved surface;
and attaching the earth surface image, generating an earth surface model and outputting/storing the earth surface model.
The mutual conductance between the Dynamo model and the Revit model must depend on family files (a three-dimensional model data format supported by Revit), the generation of the closed curved surface is completed in the Dynamo, and the Revit is imported by a family by geometry program package carried by Revit, so that a storage directory of the Revit family files must be accessed to the package.
The specific implementation method for automatically creating the drilling data model comprises the following steps:
extracting stratum demarcation points from the drilling data of the modeling areas, wherein the stratum demarcation points comprise longitude, latitude and elevation information, and calculating the absolute height of each stratum of each drilling data;
taking each stratum boundary point as an origin, making a geometric figure on an X-Y plane, taking the geometric figure as an initial position, and stretching downwards in a Z-axis direction to form a geometric cylindrical body, wherein the stretching distance is the absolute height of the next stratum of the current stratum boundary point;
and (4) importing the drilling columnar Revit family file, and automatically creating a drilling data model.
The specific implementation method for automatically creating the drilling data model further comprises the step of carrying out self-defining setting on the geometric columnar body to correspond to the rock stratum color and material.
The drilling data comprises drilling positioning points, stratum boundary points, hole depth, hole diameter and stratum physical and mechanical parameters. As shown in table 1.
After the drilling data model is generated, the drilling data model can be layered in a coloring mode and a real mode.
The method for generating the ground surface comprises the following steps:
and extracting longitude, latitude and elevation information of all top stratum demarcation points in the drilling data model, and generating the ground surface through a fitting algorithm.
And judging whether the surface model conflicts or is unreasonable with the surface generated by the drilling data model, and obvious errors such as the height of an orifice higher than the surface model, the loss of the drilling data model, the overlapping of drilling cores and the like can be generated when the conflict or the unreasonable exists.
The method for creating the stratum surface model comprises the following steps:
reading the processed data of each stratum in the modeling area from a spatial information database;
generating each stratum surface by using a fitting algorithm according to longitude, latitude and elevation point information of all stratum demarcation points in the drilling data model, and automatically creating a stratum surface model;
judging whether stratum surfaces are mutually staggered, if so, judging whether the data of the modeling area processed by each stratum is wrong; if not, carrying out stratum information loading and outputting/storing a stratum surface model;
judging whether the data of the modeling area processed by each stratum is wrong or not, if so, correcting the data processed by each stratum; if not, performing Boolean operation on the staggered stratum, loading stratum information, and outputting/storing the stratum surface model
The formation information includes formation physical-mechanical parameters.
The method for creating the stratum surface model further comprises the step of carrying out user-defined setting on each stratum surface to correspond to stratum colors and materials.
The method for creating the geologic body model comprises the following steps:
inputting a ground model;
accessing a surface model into a surface.PerimerCurves node package, and picking up a surface contour line of the surface model, wherein the surface.PerimerCurves node package is a dynamo self-contained program package and is used for picking up the contour of a curved surface;
shifting and copying the contour line to the height of the lowest point of the stratum;
grouping the two edge contour lines, stretching and lofting the two edge contour lines into a body, and creating a geological entity;
leading in a stratum surface model, and performing Boolean operation on a geological entity and a stratum surface model to generate a geological body model;
and writing geological information, and outputting/storing a geological body model.
The geological information comprises lithology, geological age, physical and mechanical parameters and colors.
9-12 are effect display diagrams for a surface model, a surface model & borehole data model, a stratigraphic surface model, and a geological volume model, respectively.
A BIM based three-dimensional geological modeling system comprising: the spatial information database stores exploration data and modeling area data;
the exploration data arrangement system is used for arranging exploration data to obtain modeling area data;
the earth surface model creating system reads earth surface longitude and latitude and elevation point files (in an xyz format) of the modeling area from the spatial information database, sets the range and precision of the modeling area, loads earth surface Revit family files, generates a closed curved surface, attaches earth surface images, generates earth surface models and outputs/stores the earth surface models;
the drilling data model creating system reads the drilling data of the modeling area from the spatial information database and automatically creates a drilling data model; judging whether the ground surface model conflicts or is unreasonable with the ground surface generated by the drilling data model, and if yes, correcting the drilling data of the modeling area; if not, automatic numbering and custom attribute information loading are carried out, and a drilling data model is output/stored;
the stratum surface model creating system reads the processed data of each stratum in the modeling area from the spatial information database, generates longitude, latitude and elevation point information of all stratum demarcation points in the drilling data model through a fitting algorithm, and automatically creates a stratum surface model; judging whether stratum surfaces are mutually staggered, if so, judging whether the data of the modeling area processed by each stratum is wrong; if not, carrying out stratum information loading and outputting/storing a stratum surface model; judging whether the data of the modeling area processed by each stratum is wrong or not, if so, correcting the data processed by each stratum; if not, performing Boolean operation on the staggered stratum, loading stratum information, and outputting/storing a stratum surface model;
the geological body model creating system inputs a surface model, accesses the surface model into a surface and PerimerCurves node package, and picks up a surface contour line of the surface model, wherein the surface and PerimerCurves node package is a dynamo self-contained program package and is used for picking up a contour of a curved surface; shifting and copying the contour line to the height of the lowest point of the stratum; grouping the two edge contour lines, stretching and lofting the two edge contour lines into a body, and creating a geological entity; leading in a stratum surface model, and performing Boolean operation on a geological entity and a stratum surface model to generate a geological body model; and writing geological information, and outputting/storing a geological body model.
Example 2
As shown in fig. 13 and 14, the construction application method based on the geological body model performs geological structure phenomenon model creation according to the geological body model output/stored by the BIM based three-dimensional geological modeling method, and then performs the BIM construction application of the geological body model. The method for creating the geologic structure phenomenon model comprises the following steps:
leading in DWG format fault lines, and picking up curves by adopting an automatic desk-review self-carried spline curve picking tool;
inputting fault strike, inclination and dip parameters;
the step of breaking, stretching and lofting is a closed fault plane;
inputting a geologic body model, performing Boolean operation on the fault plane and the geologic body model, and dividing the geologic body;
and writing in the geological related geological attributes, and outputting/storing a geological structure phenomenon model.
The method for BIM construction application of the geologic body model comprises the following steps:
introducing a field trace after the geologic body is excavated, calling a split.
Dividing the geologic body into minimum construction unit volume quantities and numbering;
importing a construction progress scheme and associating the construction progress scheme with the divided geologic body;
calling a date now program package to read the system time setting time relation mapping, carrying out construction progress scheme simulation, and judging whether the scheme is feasible or not;
if the cost is calculated, judging whether the scheme is optimal, and if so, determining and executing the scheme; if not, the procedure is modified, the cost accounting is carried out again, and whether the scheme is optimal or not is judged again;
and if not, carrying out scheme change, returning and importing the construction progress scheme, and associating with the divided geologic body.
The construction application system based on the geological body model comprises a three-dimensional geological modeling system based on BIM, and further comprises:
the geologic structure phenomenon model creating system is used for importing DWG format fault lines and picking curves by adopting an automatic desk-revit self-carried spline curve picking tool; inputting fault strike, inclination and dip parameters; the discontinuous stretching lofting is a closed fault plane, and a geological body model is input; performing Boolean operation on the fault plane and the geologic body model, and dividing the geologic body; writing in geological related geological attributes, and outputting/storing a geological structure phenomenon model;
the geological body model BIM construction application system is used for importing a field trace after geological body excavation, calling split. Dividing the geologic body into minimum construction unit volume quantities and numbering; importing a construction progress scheme and associating the construction progress scheme with the divided geologic body; calling a date now program package to read the system time setting time relation mapping, carrying out construction progress scheme simulation, and judging whether the scheme is feasible or not; if the cost is calculated, judging whether the scheme is optimal, and if so, determining and executing the scheme; if not, the procedure is modified, the cost accounting is carried out again, and whether the scheme is optimal or not is judged again; and if not, carrying out scheme change, returning and importing the construction progress scheme, and associating with the divided geologic body.
The invention is not limited to the above alternative embodiments, and any other various forms of products can be obtained by anyone in the light of the present invention, but any changes in shape or structure thereof, which fall within the scope of the present invention as defined in the claims, fall within the scope of the present invention.
Claims (10)
1. The three-dimensional geological modeling method based on BIM is characterized by comprising the following steps: the method comprises the steps of establishing a spatial information database according to various exploration data and then establishing a geologic body model, wherein the step of establishing the geologic body model comprises the following steps:
reading exploration data such as point cloud data or contour lines of the earth surface of the modeling area from a spatial information database, and automatically creating an earth surface model;
accessing a surface model into a surface and PerimerCurrves node packet, picking up a terrain surface contour line, offsetting and copying the contour line to the height of the lowest point of a stratum, grouping two edge contour lines, stretching and lofting into a body, and creating a geological entity;
leading in a stratum surface model, and performing Boolean operation on a geological entity and a stratum surface model to generate a geological body model;
and writing geological information, and outputting/storing a geological body model.
2. The BIM-based three-dimensional geological modeling method of claim 1, wherein: the BIM-based three-dimensional geological modeling method further comprises the step of sorting exploration data to obtain modeling area data, wherein the sorting step is as follows:
extracting exploration data from a spatial information database, wherein the exploration data comprises earth surface point cloud data and earth surface DEM data, and selecting a data processing type, wherein the data processing type comprises point cloud data processing, drill hole point layered interpolation encryption and stratum demarcation point interpolation encryption;
if the selected data processing type is point cloud data processing, setting the processing accuracy and the lubrication degree of the point cloud after noise removal, and outputting data after calculation by a fitting algorithm;
if the selected data processing type is the hierarchical interpolation encryption of the drilling points, the interpolation precision and range are set, and data are output after the operation of a spatial interpolation fitting algorithm;
and if the selected data processing type is the interpolation encryption of the stratum demarcation points, setting the curvature between adjacent points, and outputting data after the operation of a fitting algorithm.
3. The BIM-based three-dimensional geological modeling method of claim 2, wherein: the method for creating the earth surface model comprises the following steps:
reading the earth surface longitude, latitude and elevation point information of the modeling area from the spatial information database;
setting the range and precision of a modeling area;
loading an earth surface Revit family file to generate a closed curved surface;
and attaching the earth surface image, generating an earth surface model, and outputting/storing the earth surface model.
4. The BIM-based three-dimensional geological modeling method of claim 3, wherein: the method for creating the stratum surface model comprises the following steps:
reading the processed data of each stratum in the modeling area from a spatial information database;
generating each stratum surface by using a fitting algorithm according to longitude, latitude and elevation point information of all stratum demarcation points in the drilling data model, and automatically creating a stratum surface model;
judging whether stratum surfaces are mutually staggered, if so, judging whether the data of the modeling area processed by each stratum is wrong; if not, carrying out stratum information loading and outputting/storing a stratum surface model;
judging whether the data of the modeling area processed by each stratum is wrong or not, if so, correcting the data processed by each stratum; and if not, performing Boolean operation on the staggered stratum, loading stratum information, and outputting/storing the stratum surface model.
5. The BIM-based three-dimensional geological modeling method of claim 4, wherein: the method for establishing the stratigraphic surface model also comprises the step of carrying out user-defined setting on each stratigraphic surface to correspond to the stratigraphic colors and materials.
6. The BIM-based three-dimensional geological modeling method of claim 4, wherein: the method for creating the drilling data model comprises the following steps:
reading the drilling data of the modeling area from the spatial information database, and automatically creating a drilling data model;
judging whether the ground surface model conflicts or is unreasonable with the ground surface generated by the drilling data model, and if yes, correcting the drilling data of the modeling area; and if not, loading the automatic serial number and the custom attribute information, and outputting/storing the drilling data model.
7. The BIM-based three-dimensional geological modeling method of claim 6, wherein: the specific implementation method for automatically creating the drilling data model comprises the following steps:
extracting stratum demarcation points from the drilling data of the modeling areas, wherein the stratum demarcation points comprise longitude, latitude and elevation information, and calculating the absolute height of each stratum of each drilling data;
taking each stratum boundary point as an origin, making a geometric figure on an X-Y plane, taking the geometric figure as an initial position, and stretching downwards in a Z-axis direction to form a geometric cylindrical body, wherein the stretching distance is the absolute height of the next stratum of the current stratum boundary point;
and (4) importing the drilling columnar Revit family file, and automatically creating a drilling data model.
8. The BIM-based three-dimensional geological modeling method of claim 7, wherein: the specific implementation method for automatically creating the drilling data model further comprises the step of carrying out user-defined setting on the geometric columnar body to correspond to the rock stratum color and material.
9. The BIM-based three-dimensional geological modeling method of claim 6, wherein: the generation method of the ground surface comprises the following steps: and extracting longitude, latitude and elevation information of all top stratum demarcation points in the drilling data model, and generating a ground surface through a fitting algorithm, wherein the fitting algorithm is RBF or Kriging.
10. The construction application method based on the geologic body model is characterized by comprising the following steps: the geological body model output/stored by the BIM-based three-dimensional geological modeling method according to any one of claims 1-9, the geological structure phenomenon model is created, and then the BIM construction application of the geological body model is carried out;
the method for creating the geologic structure phenomenon model comprises the following steps:
leading in DWG format fault lines, and picking up curves by adopting an automatic desk-review self-carried spline curve picking tool;
inputting fault strike, inclination and dip parameters;
the step of breaking, stretching and lofting is a closed fault plane;
inputting a geologic body model, performing Boolean operation on the fault plane and the geologic body model, and dividing the geologic body;
and writing in the geological related geological attributes, and outputting/storing a geological structure phenomenon model.
The method for BIM construction application of the geologic body model comprises the following steps:
introducing a field trace after the geologic body is excavated, calling a split.
Dividing the geologic body into minimum construction unit volume quantities and numbering;
importing a construction progress scheme and associating the construction progress scheme with the divided geologic body;
calling a date now program package to read the system time setting time relation mapping, carrying out construction progress scheme simulation, and judging whether the scheme is feasible or not;
if the cost is calculated, judging whether the scheme is optimal, and if so, determining and executing the scheme; if not, the procedure is modified, the cost accounting is carried out again, and whether the scheme is optimal or not is judged again;
and if not, carrying out scheme change, returning and importing the construction progress scheme, and associating with the divided geologic body.
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