CN110910499B - Method and device for constructing geological environment carrier fault model based on Revit software - Google Patents
Method and device for constructing geological environment carrier fault model based on Revit software Download PDFInfo
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Abstract
The invention relates to a construction method and a device of a geological environment carrier fault model based on Revit software, wherein the method comprises the following steps: dividing the region into a plurality of units according to the fault development condition, and respectively performing drilling family and stratum modeling on each unit; obtaining an interpolation point of each stratum based on a Kriging interpolation method; modeling a geological environment carrier stratum based on a Delaunay triangular interpolation method; constructing a carrier fault plane model: constructing a geological environment carrier fault plane model based on a boundary virtual drilling method and three-dimensional space plane fitting; constructing a carrier fault surface model: and constructing a fault surface model of the geological environment carrier based on a boundary virtual drilling method, a Kriging interpolation method and a Delaunay triangle interpolation method. Compared with the prior art, the method solves the problem that a three-dimensional geological environment carrier modeling module is not available in Revit software.
Description
Technical Field
The invention relates to the field of civil engineering, in particular to a construction method and a device of a geological environment carrier fault model based on Revit software.
Background
Urban rail transit has entered a high-speed development stage, and the construction and maintenance of rail transit are closely related with geological environment, because the invisibility of underground space, complexity and uncertainty lead to urban rail transit risk accident frequently, and the situation is severe. The safety and risk analysis of the rail transit geological environment carrier is necessary and urgent to research. The geological environment not only can influence the construction stage of rail transit, but also can influence the scheme of rail transit design stage and select moreover, the geological environment monitoring of fortune dimension phase, maintenance, consequently the urgent need carry out full life cycle's risk management and control and monitoring to rail transit geological environment.
Revit software can realize the full life cycle management of projects, is widely applied to the field of buildings at present, and can seriously hinder the management of the full life cycle of urban rail transit design, construction, operation and maintenance because the Revit software cannot develop a functional module related to the construction of a three-dimensional geological environment carrier model. And modeling methods for complex geological structures such as faults, folds and the like are few and few, so that the construction of a geological environment carrier model based on Revit is more difficult.
In view of the above problems, no effective solution has been proposed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art, provides a construction method and a device of a geological environment carrier fault model based on Revit software, and solves the problem that the Revit software does not have a three-dimensional geological environment carrier modeling module.
The purpose of the invention can be realized by the following technical scheme:
a construction method of a geological environment carrier fault model based on Revit software comprises the following steps:
dividing the region into a plurality of units according to the fault development condition, and respectively performing drilling family and stratum modeling on each unit;
obtaining an interpolation point of each stratum based on a Kriging interpolation method;
modeling a geological environment carrier stratum based on a Delaunay triangular interpolation method;
constructing a carrier fault plane model: constructing a geological environment carrier fault plane model based on a boundary virtual drilling method and three-dimensional space plane fitting;
constructing a carrier fault surface model: and constructing a fault surface model of the geological environment carrier based on a boundary virtual drilling method, a Kriging interpolation method and a Delaunay triangle interpolation method.
The modeling process of the drilling family is specifically as follows: and modeling a drilling family based on geological drilling data, wherein the input data comprises formation elevation, layer thickness, formation name, material and mechanical parameters, and the mechanical parameters at least comprise a formation internal friction angle and cohesive force.
The process of obtaining the interpolation point is as follows: and obtaining the formation elevation data of the unknown point from the formation elevation data of the known drilling point through a Kriging algorithm.
The process of obtaining the interpolation point specifically includes:
step S21: inputting original data, wherein the original data are position coordinate data and stratum elevation data of known drilling points selected randomly;
step S22: calculating the distance and the half-variance of a point pair consisting of any two known drilling points;
step S23: based on the calculation result of the step S22, in order to increase the model fitting speed, an average point is calculated every n unit intervals to obtain a plurality of average points, and a fitting model fitting average point is selected to obtain a fitting model curve;
step S24: and (4) solving the main variable range and the deflection base value of the fitting model according to the model curve obtained by fitting, and calculating the elevation of the unknown point according to the elevation of the known point to obtain an interpolation point.
The carrier fault plane model construction specifically comprises the following steps:
step S41: selecting a TIN edge, acquiring two end points of the TIN edge, and constructing a straight line based on the two end points;
step S42: determining a fitting point of a fault plane equation based on the known fault plane attitude observation position and the straight line of observing the corresponding fault plane attitude and structure;
step S43: fitting by fitting points of a fault plane equation based on a least square method;
step S44: the strata in the regions on both sides of the fracture plane are extended to the fracture plane based on the fitting result of step S43.
The conditions for selecting the TIN edge in step S41 include:
the two end points are close to the intersection line of the ground layer and the fault layer,
the extension line of the TIN side is nearly vertical to the trend line of the fault plane.
The construction of the carrier fault surface model specifically comprises the following steps:
step S51: selecting a TIN edge, acquiring two end points of the TIN edge, and constructing a straight line based on the two end points;
step S52: determining a fitting point of a fault plane equation based on the known fault plane attitude observation position and the straight line of observing the corresponding fault plane attitude and structure;
step S53: interpolating based on a fitting point of a fault plane equation by using a Kriging interpolation method, and generating a fault plane by using a Delaunay triangular interpolation method;
step S54: the strata in the areas on both sides of the fault plane are extended to the fault plane.
The process of acquiring the intersection in step S42 specifically includes:
step S421: selecting a plurality of fault occurrence observation positions in the fault plane, and obtaining a plurality of corresponding fault plane occurrences at the plurality of fault occurrence observation positions;
step S422: solving equations of a plurality of fault planes according to the position point coordinates of a plurality of known observed fault situations and the corresponding situations of the plurality of fault planes;
step S423: intersections of the constructed straight line with the plurality of fault planes are obtained.
A device for constructing a geological environment carrier fault model based on Revit software comprises a processor, a memory and a program stored in the memory and executed by the processor, wherein the processor executes the program to realize the following steps:
dividing the region into a plurality of units according to the fault development condition, and respectively performing drilling family and stratum modeling on each unit;
obtaining an interpolation point of each stratum based on a Kriging interpolation method;
modeling a geological environment carrier stratum based on a Delaunay triangular interpolation method;
constructing a carrier fault plane model: constructing a geological environment carrier fault plane model based on a boundary virtual drilling method and three-dimensional space plane fitting;
constructing a carrier fault surface model: and constructing a fault surface model of the geological environment carrier based on a boundary virtual drilling method, a Kriging interpolation method and a Delaunay triangle interpolation method.
Compared with the prior art, the invention has the following beneficial effects:
1. the method solves the problem that the carrier fault modeling of the three-dimensional geological environment can not be carried out in Revit software, the fault plane can be constructed by utilizing the virtual boundary drilling method and the plane fitting based on the least square method, and the fault curved surface can be constructed by utilizing the virtual boundary drilling method, the Kriging interpolation method and the Delaunay triangle interpolation method.
2. The invention is based on the Revit software to carry out secondary development, effectively solves the problem that the Revit software does not have a three-dimensional geological environment carrier modeling module, can effectively improve the efficiency of designers, and provides a basis for the full life cycle management of urban rail transit.
Drawings
FIG. 1 is a schematic flow chart of the main steps of the method of the present invention;
FIG. 2 is a schematic diagram of the characteristics of a hollow circle;
FIG. 3 is a schematic diagram of a maximized minimum angle characteristic;
FIG. 4 is a schematic diagram of Delaunay triangle interpolation, wherein (a) new points P are inserted, (b) influence triangles for finding P points, (c) influence triangles are deleted, and (d) new triangles are constructed;
FIG. 5 is a schematic representation of the spatial distribution of fault planes;
FIG. 6 is a flow chart of a Kriging interpolation method according to an embodiment of the present invention;
fig. 7 is a flowchart of the Delaunay triangle interpolation method according to the embodiment of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
A method for constructing a geological environment carrier fault model based on Revit software, which is implemented by a computer system in the form of a computer program, as shown in fig. 1, and comprises:
firstly, dividing a region into a plurality of units according to the fault development condition, and respectively performing drilling family and stratum modeling on each unit; then, obtaining an interpolation point of each stratum based on a Kriging interpolation method; then, modeling of a geological environment carrier stratum based on a Delaunay triangular interpolation method; finally, the carrier fault plane model construction or the carrier fault curved surface model construction can be carried out,
the modeling process of the drilling family is specifically as follows: and dividing the region into a plurality of units according to the fault development condition, and respectively performing drilling family and stratum modeling on each unit. And (4) modeling a drilling family based on geological drilling data, wherein the modeling comprises the input of mechanical parameters such as stratum elevation, layer thickness, stratum name, material, stratum internal friction angle, cohesive force and the like.
The process of obtaining the interpolation point is as follows: and obtaining the stratum elevation data of the unknown point from the stratum elevation data of the known drilling point through a Kriging algorithm, and providing data for generating the stratum of the geological environment carrier model by using a Delaunay triangular interpolation method.
As shown in fig. 6, the process of acquiring the interpolation point specifically includes:
step S21: inputting original data, wherein the original data are position coordinate data and stratum elevation data of known drilling points selected randomly;
step S22: the distance and the half-variance of a point pair consisting of any two known borehole points are calculated:
calculating the distance h of the known pointij(h is the distance between two points i, j), and the half-variance r (x, h) of the point pair is obtained by the following formulaij)；
Because of the second order stationary assumption, E [ z (x) ] — E [ z (x + h) ], thus:
wherein: x is the unknown point location, h is the distance of the point pair, r (x, h) is the half-variance of the point pair, E is the mathematical expectation, z (x) is the elevation of the unknown point, and z (x + h) is the elevation of a known point at a distance h from the unknown point.
Step S23: based on the calculation result of the step S22, in order to increase the model fitting speed, an average point is calculated every n unit intervals to obtain a plurality of average points, and a fitting model fitting average point is selected to obtain a fitting model curve;
step S24: and (4) solving the main variable range and the deflection base value of the fitting model according to the model curve obtained by fitting, and calculating the elevation of the unknown point according to the elevation of the known point to obtain an interpolation point.
The elevations of the unknown points are specifically:
the method comprises the following specific steps:
step S241: let cij＝c-r(x,hij) To obtain a calculation matrix K, a vector D,
step S242: using matrix K and vector D to obtain vector lambdai，λiRepresents the weight of the influence of the ith known point on the current unknown point, lambdai＝K-1D。
Step S243: due to the unbiased nature of the Kriging interpolation method,
for lambdaiAnd (6) carrying out normalization.
Step S244: calculating the elevation value of the x point;
wherein: c. CijIs c (x)i,xj) In short, i.e. z (x)i) And z (x)j) C is the bias base station value of the fitting model, x1Is the position of the 1 st known point, x is the position of the unknown point, z (x) is the elevation of the unknown point, c (x)1X) is z (x)1) And a covariance function of z (x), z (x)i) Is the elevation value of the ith known point.
Delaunay triangle interpolation criterion: first, the empty circle characteristic: the Delaunay triangulation is unique (any four points cannot be co-circular), and no other points exist within the circumscribed circle of any triangle in the Delaunay triangulation, as shown in fig. 2; second, maximize the minimum angular characteristic: the minimum angle of the triangle formed by the Delaunay triangulation is the largest among all the triangulations that the scatter set may form. In this sense, the Delaunay triangulation network is the "nearest to regularized" triangulation network. In particular, in the diagonal line of the convex quadrilateral formed by two adjacent triangles, the minimum angle of the two internal angles is not increased after mutual exchange, as shown in fig. 3.
The Delaunay triangle interpolation method has excellent characteristics: the closest: forming a triangle by the nearest three points, wherein all line segments (the sides of the triangle row) are not intersected; uniqueness: consistent results will be obtained no matter where the region is constructed; third, optimality: if the diagonals of the convex quadrangle formed by any two adjacent triangles can be interchanged, the minimum angle in the six interior angles of the two triangles cannot be changed; fourthly, the most rule is as follows: if the minimum angles of each triangle in the triangulation network are arranged in an ascending order, the numerical value obtained by the arrangement of the Delaunay triangulation network is the maximum; regionality: adding, deleting and moving a certain vertex only can affect the adjacent triangle; sixthly, the shell with convex edges: the outermost boundaries of the triangulation network form a convex polygonal outer shell.
As shown in fig. 4 and 7, the specific process is as follows:
1) and constructing a super triangle, containing all scatter points, and putting the super triangle into a triangle linked list.
2) And sequentially inserting scattered points in the point set, finding out a triangle (called as an influence triangle of the point) of which the circumscribed circle contains the insertion point from the triangle linked list, deleting the common edge of the influence triangle, and connecting the insertion point with all vertexes of the influence triangle, thereby completing the insertion of one point in the Delaunay triangle linked list.
3) And optimizing the local newly formed triangle according to an optimization criterion. And putting the formed triangles into a Delaunay triangle linked list.
Theoretically, in order to construct a Delaunay triangulation network, a local Optimization process LOP (local Optimization procedure) proposed by Lawson, a general triangulation network can be ensured to be a Delaunay triangulation network by processing the LOP, and the basic method is as follows: synthesizing two triangles with common edges into a polygon; checking by a maximum empty circle criterion to see whether the fourth vertex of the maximum empty circle is in a circumscribed circle of the triangle; if yes, correcting the diagonal line to exchange the diagonal line, and finishing the processing of the local optimization process; fourthly, the second step is executed circularly until all scattered points are inserted.
Constructing a carrier fault plane model: the method comprises the following steps of constructing a geological environment carrier fault plane model based on a boundary virtual drilling method and three-dimensional space plane fitting, and specifically comprises the following steps:
step S41: selecting a TIN edge, acquiring two end points of the TIN edge, and constructing a straight line based on the two end points, wherein the conditions for selecting the TIN edge comprise: two end points of the TIN are close to the intersection line of the ground layer and the fault layer, and the extension line of the TIN side is nearly vertical to the trend line of the fault layer;
in particular
When the Delaunay triangle interpolation method is carried out to form the formation TIN surface, the topological relations between the triangle and the TIN edge, the triangle and the vertex (drilling point), the TIN edge and the left/right triangle, and the TIN edge and the vertex are established, and the TIN edge meeting the conditions can be found through the relations.
The conditions required to be met by selecting the TIN include: the two end points (drilling points) are as close as possible to the fault line (the intersection line of the ground surface and the fault surface); secondly, the extension line of the TIN side is nearly vertical to the trend line of the fault plane, so that the extrapolation distance can be shortened.
Setting two end points of the TIN edge as M1(x1，y1，z1) And M2(x2，y2，z2) Then the equation of a straight line passing through the two points is
Step S42: determining a fitting point of a fault plane equation based on the known fault plane attitude observation position and the straight line of observing the corresponding fault plane attitude and structure;
as shown in FIG. 5, the fault plane attitude (dip) is known
Dip angle theta) and P (x) for observing fault occurrence position0，y0，z0). ABC isA fault surface is provided with S (x)3，y3，z3) The intersection of the trend line of P with the XOY plane, B (x)4，y4，z4) Is the intersection of the fault plane and the X-axis. Then from the spatial relationship:
u and V are two vectors passing through point P in the plane ABC, then
U＝{x4-x0，-y0，-z0} (6)
V＝{x3-x0，y3-y0，-z0} (7)
Let n be { m, n, P } a normal vector passing through point P in plane ABC, then
The components m, n, p of the normal vector are obtained from equation (8), and the ABC equation of the surface in this case is
m(x-x0)+n(y-y0)+p(z-z0)＝0 (9)
The straight line M under the condition can be obtained by combining the vertical type (3) and the vertical type (9)1M2Point of intersection P with plane ABC1Then, n intersection points (corresponding to extrapolation points of the TIN edge) are obtained by the above method from another fault occurrence observation point and the corresponding fault occurrence observed. These extrapolated points are the fitted points of the fault plane equations.
Step S43: fitting by fitting points of a fault plane equation based on a least square method, wherein the specific method is as follows;
the general expression of the plane equation is:
Ax+By+Cz+D＝0，(C≠0) (10)
order:
then: a is0x+a1y+a2 (13)
For a series of n points (n ≧ 3): (x)i，yi，zi) I-0, 1, …, n-1, point (x) to be usedi，yi，zi) The above plane equation is calculated by fitting i to 0, 1, …, n-1, such that:
To minimize S, one should satisfy:
namely:
comprises the following steps:
or:
solving the linear equation set to obtain: a is0，a1，a2Namely: a is0x+a1y+a2
Solving method of ternary linear equation
Known as a three-dimensional equation of once, where x, y, z are unknowns, a1，b1，c1，d1Etc. are coefficients.
According to the rule of Kleim
Wherein the content of the first and second substances,
obtaining:
step S44: the strata in the regions on both sides of the fracture plane are extended to the fracture plane based on the fitting result of step S43.
Constructing a carrier fault surface model: the method comprises the following steps of constructing a fault surface model of the geological environment carrier based on a boundary virtual drilling method, a Kriging interpolation method and a Delaunay triangle interpolation method, and specifically comprises the following steps:
step S51: selecting a TIN edge, acquiring two end points of the TIN edge, and constructing a straight line based on the two end points;
step S52: determining a fitting point of a fault plane equation based on the known fault plane attitude observation position and the straight line of observing the corresponding fault plane attitude and structure;
step S53: interpolating based on a fitting point of a fault plane equation by using a Kriging interpolation method, and generating a fault plane by using a Delaunay triangular interpolation method;
step S54: the strata in the areas on both sides of the fault plane are extended to the fault plane.
Claims (8)
1. A construction method of a geological environment carrier fault model based on Revit software is characterized by comprising the following steps:
dividing the region into a plurality of units according to the fault development condition, respectively carrying out drilling family and stratum modeling on each unit,
obtaining an interpolation point of each stratum based on a Kriging interpolation method,
modeling of geological environment carrier stratum is carried out based on the Delaunay triangular interpolation method,
constructing a carrier fault plane model: constructing a geological environment carrier fault plane model based on a boundary virtual drilling method and three-dimensional space plane fitting,
constructing a carrier fault surface model: constructing a fault surface model of the geological environment carrier based on a boundary virtual drilling method, a Kriging interpolation method and a Delaunay triangle interpolation method;
the process of obtaining the interpolation point is as follows: obtaining the formation elevation data of an unknown point from the formation elevation data of the known drilling point through a Kriging algorithm;
the process of obtaining the interpolation point specifically includes:
step S21: inputting raw data, wherein the raw data are randomly selected position coordinate data and stratum elevation data of known drilling points,
step S22: the distance and the half-variance of a point pair consisting of any two known borehole points are calculated,
step S23: calculating an average value point every n unit intervals based on the calculation result of the step S22 to obtain a plurality of average value points, selecting fitting average value points of the fitting model to obtain a fitting model curve,
step S24: and (4) solving the main variable range and the deflection base value of the fitting model according to the model curve obtained by fitting, and calculating the elevation of the unknown point according to the elevation of the known point to obtain an interpolation point.
2. The method for constructing the geological environment carrier fault model based on Revit software according to claim 1, wherein the drilling family modeling process specifically comprises: and modeling a drilling family based on geological drilling data, wherein the input data comprises formation elevation, layer thickness, formation name, material and mechanical parameters, and the mechanical parameters at least comprise a formation internal friction angle and cohesive force.
3. The method for constructing the geological environment carrier fault model based on the Revit software as claimed in claim 1, wherein the half variance of the point pairs in the step S22 is specifically:
wherein: x is the unknown point location, h is the distance of the point pair, r (x, h) is the half-variance of the point pair, E is the mathematical expectation, z (x) is the elevation of the unknown point, and z (x + h) is the elevation of a known point at a distance h from the unknown point.
4. The method for constructing the geological environment carrier fault model based on Revit software according to claim 1, wherein the construction of the carrier fault plane model specifically comprises the following steps:
step S41: selecting a TIN edge, acquiring two end points of the TIN edge, and constructing a straight line based on the two end points;
step S42: determining a fitting point of a fault plane equation based on the known fault plane attitude observation position and the straight line of observing the corresponding fault plane attitude and structure;
step S43: fitting by fitting points of a fault plane equation based on a least square method;
step S44: the strata in the regions on both sides of the fracture plane are extended to the fracture plane based on the fitting result of step S43.
5. The method for constructing the geological environment carrier fault model based on the Revit software as claimed in claim 4, wherein the condition for selecting the TIN edge in the step S41 includes:
the two end points are close to the intersection line of the ground layer and the fault layer,
the extension line of the TIN side is nearly vertical to the trend line of the fault plane.
6. The method for constructing the geological environment carrier fault model based on Revit software according to claim 1, wherein the construction of the carrier fault surface model specifically comprises the following steps:
step S51: selecting a TIN edge, acquiring two end points of the TIN edge, and constructing a straight line based on the two end points;
step S52: determining a fitting point of a fault plane equation based on the occurrence and the constructed straight line of the known fault plane;
step S53: interpolating based on a fitting point of a fault plane equation by using a Kriging interpolation method, and generating a fault plane by using a Delaunay triangular interpolation method;
step S54: the strata in the areas on both sides of the fault plane are extended to the fault plane.
7. The method for constructing the geological environment carrier fault model based on Revit software according to claim 4, wherein the process of acquiring the intersection point in the step S42 specifically comprises:
step S421: selecting a plurality of fault occurrence observation positions in the fault plane, and obtaining a plurality of corresponding fault plane occurrences at the plurality of fault occurrence observation positions;
step S422: solving equations of a plurality of fault planes according to the position point coordinates of a plurality of known observed fault situations and the corresponding situations of the plurality of fault planes;
step S423: intersections of the constructed straight line with the plurality of fault planes are obtained.
8. An apparatus for constructing a geological environment carrier fault model based on Revit software, comprising a processor, a memory, and a program stored in the memory and executed by the processor, wherein the processor implements the method according to any one of claims 1-7 when executing the program.
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