CN109858076A - A kind of modeling and analysis methods of mine worked-out section - Google Patents
A kind of modeling and analysis methods of mine worked-out section Download PDFInfo
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Abstract
The invention discloses a kind of modeling and analysis methods of mine worked-out section, include the following steps: the point cloud data that goaf is obtained using three-dimensional laser scanner；Processing point cloud data obtains the point cloud threedimensional model in entire goaf；Generate the CAD facial contour line in goaf；CAD facial contour line is converted and imports into the facial contour line in MIDAS software；The three-dimensional goaf physical model for generating and being consistent with actual conditions is handled using MIDAS software；It include the three-dimensional mine physical model in goaf using MIDAS Software Create；Obtained goaf-country rock physical model is subjected to grid dividing, obtains the mine three-dimensional grid model comprising goaf；Three-dimensional grid model in MIDAS software is converted into FPN file to imported into FLAC software, assigns Parameters in Mathematical Model, analysis operating condition needed for establishing research carries out the analysis of various situations to goaf.The present invention can more really reflect the actual conditions in goaf, more accurately reflect the stability in goaf.
Description
Technical field
The present invention relates to mining engineering fields, particularly, are related to a kind of modeling and analysis methods of mine worked-out section.
Background technique
Past major part mine use open-stope mining underground ore bodies, due to various reasons, the mine caused there are
The goaf of large area forms goaf group, and seriously affects the safety in production in mine.
In order to solve the stability problem in existing goaf, need to learn the stability in existing goaf.Most convenient at present
Feasible method is exactly to use Numerical Analysis methods, using the stability in numerical simulation analysis goaf, problems faced
It is exactly how Goaf Area accurately establishes three-dimensional mined out section model.It is complex-shaped changeable since goaf area is larger, with
Toward being all to choose local goaf or establish model progress stability analysis after simplifying to entire goaf group, typically just
The drawing provided with mine carries out simple analysis and simple modeling to local goaf using certain single software, such as
FLAC3D, MIDAS-GTS/NX, ABAQUS etc..Goaf is generally all assumed to be more regular profile by the analysis method, cannot
Strictly according to the facts situations such as the reflection true shaped volumes in Goaf Area, accurately analysis is hardly resulted in as a result, cannot be mined out
Area, which administers, provides accurately reference.
Therefore, there is a need in the field to provide a kind of modeling and analysis methods of new mine worked-out section.Correspondingly, being also required to one kind
The method for building up of mine three-dimensional goaf physical model and a kind of method for building up of the three-dimensional mine physical model comprising goaf.
Summary of the invention
The purpose of the present invention is to provide a kind of modeling and analysis methods of mine worked-out section, a kind of mine three-dimensional goaf are real
The method for building up of body Model and a kind of method for building up of the three-dimensional mine physical model comprising goaf, to achieve the above object,
Technical solution of the present invention includes content as described below.
The present invention provides a kind of method for building up of mine three-dimensional goaf physical model first, and this method includes following step
It is rapid:
S1, it is scanned using three-dimensional laser scanner in mine worked-out section, mine worked-out section is scanned into point cloud data；
S2, the software point Yun Jinhang obtained to each scan node by handling three-dimensional laser scanner point cloud data
Splicing obtains the threedimensional model constructed by cloud in entire goaf；
The software of S3, the threedimensional model processing three-dimensional laser scanner point cloud data by cloud building for completing processing
Save into the point cloud file of the openable file format of CAD software；
S4, the point cloud file of the openable file format of the CAD software of preservation is imported into CAD software, it is soft in CAD
The profile in goaf is depicted with spline curve in part, forms the curved surface profile line in each face in goaf, and is saved respectively；
S5, the curved surface profile line in each face obtained in S4 is converted into the formatted file that MIDAS software can identify, and protected
It deposits；
S6, the formatted file that can identify the MIDAS software of each curved surface in S5 are soft using MIDAS finite element analysis
Interface between part and CAD software is imported into MIDAS finite element analysis software, and the contour line in each face is in the same three-dimensional
Among space, the contour line of each curved surface in practical goaf is reduced；
S7, using the pre-treatment modeling function in MIDAS finite element analysis software by the contour generating face in each face, then
Entity is generated by face；
S8, generation multiple entities three-dimensional is adopted by the realization of entity intersection operation in MIDAS finite element analysis software
The reconstruct of dead zone model forms the three-dimensional goaf physical model being consistent with actual conditions.
The method for building up of the present invention also provides a kind of three-dimensional mine physical model comprising goaf, this method includes following
Step:
Step step S1~S8 as previously described and step S9~S12, S9 as described below and step S1~S8
It is independent, can its first, behind or simultaneously, can be by assigning using stratum generator in MIDAS finite element analysis software
Have elevation goaf earth's surface contour lines creation and the Terrain surficial model that is actually consistent；
It is S10, independent with step S1~S8 and step S9, certain size is established using MIDAS finite element analysis software
Mine entity, the entity include the geo-logical terrain in mine；
S11, the mine entity in ground surface obtained in S9 and S10 is carried out to face cutting physical manipulations to get arrived with
The mine stratum landforms three-dimensional entity model that actual conditions are consistent；
S12, the three-dimensional mine physical model in the three-dimensional goaf physical model and S11 in S8 is subjected to Boolean calculation,
The three-dimensional mine physical model comprising goaf is obtained.
The present invention also provides a kind of modeling and analysis methods of mine worked-out section, method includes the following steps:
Step step S1~S12 as previously described and step S13~S16, S13 as described below, it will be obtained in S12
To goaf-country rock physical model carry out fining grid dividing using MIDAS finite element analysis software, obtain comprising mined out
The mine three-dimensional grid model in area；
S14, in MIDAS finite element analysis software by S13 three-dimensional grid model save at FPN file；
S15, FPNtoFLAC is utilized3DFPN file in S14 is converted into FLAC by .exe software3DFile；
S16, the FLAC that will be generated in S153DFile imported into FLAC3DIn software, every kind of rock mass physical power in model is assigned
Parameter is learned, analysis operating condition needed for establishing research carries out the analysis of various situations to Goaf Area.
Further, in the present invention, before step S1, the goaf to be scanned first is planned, and in goaf
Coordinate origin is found, the position in practical goaf is corresponded to convenient for the goaf point cloud data by scanning, for building for later period model
It is vertical to lay the foundation.
It further, in the present invention, further include using data splice marks, to be carried out in goaf in step S1
The data obtained after three-dimensional laser scanner operation more than twice carry out splicing identification.
Further, in the present invention, in step S1, the data splice marks include at least two groups ball, and every group of circle
Ball is three or more, and three, the front of three-dimensional laser scanner, three circles are placed or hung to different location when every subjob
Ball puts second group of ball when this three-dimensional laser scanner operation completion and when scanner is forwarded in front of these three balls
It sets or is hung on three different locations in the front of three-dimensional laser scanner operation；It is preferred that the ball is to be easy at dark place
The Archon of identification.
Further, in the present invention, the software for three-dimensional laser scanner point cloud data being handled described in step S2 is FARO
Scene software.
Further, in the present invention, CAD software is AutoCAD.
Further, in the present invention, the openable file format of CAD software described in step S3 is .rcp format.
Further, in the present invention, in step S4 each face curved surface profile line be each face Irregular Boundary Surface profile
Line.
Further, in the present invention, the format that MIDAS software can identify in step S5 is .dxf format.
Compared with the prior art, the invention has the following advantages:
(1), in method of the invention, the data of mine worked-out section are acquired into a cloud using three-dimensional laser scanner for the first time
Data, and build out in CAD the curved surface profile line of truth, in conjunction with using MIDAS finite element analysis software to be handled,
It provides the foundation to obtain mine three-dimensional goaf physical model in the present invention for the first time.It is visually three-dimensional to obtain mine worked-out section
Pattern is laid a good foundation for the qualitative research in goaf.
(2), the mine three-dimensional entity model obtained in the present invention herein in connection with MIDAS finite element analysis software is included
The three-dimensional mine physical model in goaf, thus it is real to get the visual three-dimensional mine comprising goaf in the present invention for the first time
Body Model provides the foundation for the qualitative research in mine and goaf.
(3), the present invention is soft herein in connection with FLAC is used on the basis of obtaining the three-dimensional mine physical model comprising goaf
Part has obtained the quantitative data of mine worked-out section model, brings more believable result for mine worked-out section stability analysis.
Generally speaking, method provided by the invention greatly reduces the complexity modeled manually, significantly improves modeling
Efficiency is accurately analyzed more realistically situations such as the shaped volumes of reflection mine worked-out section as a result, controlling for goaf
Reason provides accurately reference.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
Below with reference to figure, the present invention is described in further detail.
Detailed description of the invention
The attached drawing constituted part of this application is used to provide further understanding of the present invention, schematic reality of the invention
It applies example and its explanation is used to explain the present invention, do not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart during a kind of modeling and analysis methods of mine worked-out section of the present invention are implemented；
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be limited according to claim
Fixed and covering multitude of different ways is implemented.
Referring to Fig. 1, a kind of method for building up of mine three-dimensional goaf provided by the invention physical model, this method include with
Lower step:
S1, it is scanned using three-dimensional laser scanner in mine worked-out section, mine worked-out section is scanned into point cloud data；
Point cloud data refers to that scanning data records in dots, each point includes three-dimensional coordinate；Before carrying out S1 step, first
It plans the goaf to be scanned, and to find coordinate origin in goaf, convenient for the goaf point cloud that will be scanned
Data correspond to the position in practical goaf, more really establish three-dimensional mine physical model for the later period and lay the foundation；
S2, pass through the software point obtained to each scan node of dedicated processing three-dimensional laser scanner point cloud data
Cloud carries out splicing, obtains the threedimensional model constructed by cloud in entire goaf；Since three-dimensional laser scanner is effectively made
Industry range is within 20m, so for goaf group, it is impossible to disposably be scanned for out, moreover have inside goaf
In order to solve this problem the structures such as obturation, pre- pillar, the problem for causing laser scanning incomplete every time before scanning, are being swept
The front and back for retouching instrument respectively puts three special balls of white, and the later period can be according to ball in the software of processing point cloud data
The point cloud data scanned every time is spliced well, realizes goaf overall effect；Wherein, dedicated processing 3 D laser scanning
The software of instrument point cloud data is FARO Scene software；
S3, the dedicated processing three-dimensional laser scanner point cloud data of threedimensional model constructed by cloud for completing processing
Software save at .rcp format point cloud file；
S4, the point cloud file of the .rcp format of preservation is imported into AutoCAD, by the wheel in goaf in AutoCAD
Exterior feature is depicted with spline curve, forms the Irregular Boundary Surface contour line in each face in goaf, and is saved respectively；It utilizes
.rcp format goaf point cloud data file is opened in insertion-attachment order in AutoCAD, will form three-dimensional point cloud goaf mould
Type establishes the contour line in each face according to each face of model；
S5, each Irregular Boundary Surface contour line obtained in S4 is converted into .dxf formatted file, and saved；
S6, by the .dxf formatted file of each Irregular Boundary Surface in S5, using MIDAS finite element analysis software with
Interface between AutoCAD is imported into MIDAS finite element analysis software, and the contour line in each face is in the same three-dimensional space
Among, reduce the contour line in each face in practical goaf；
S7, the contour line in each face is given birth to using the powerful pre-treatment modeling function in MIDAS finite element analysis software
At face, recycle the extension function in MIDAS finite element analysis software that face is generated entity；
S8, generation multiple entities three-dimensional is adopted by the realization of entity intersection operation in MIDAS finite element analysis software
The reconstruct of dead zone model forms the three-dimensional goaf physical model being consistent with actual conditions.
The method for building up of the present invention also provides a kind of three-dimensional mine physical model comprising goaf, this method includes following
Step:
Step step S1~S8 as previously described and step S9~S12, S9 as described below, to the contour of mine
Line topographic map, which passes through, the processing such as deletes, adds elevation, and saves as .dxf file；Using in MIDAS finite element analysis software
Layer generator, can be by with elevation mine worked-out section earth's surface contour lines creation and the Terrain surficial model that is actually consistent；
S10, the mine entity that certain size is established using MIDAS finite element analysis software, the entity include the ground in mine
Quality layer；
S11, by the mine entity in Terrain surficial model obtained in S9 and S10 in MIDAS finite element analysis software into
Physical manipulations are cut in row face, delete cut surface top entity to get to the mine stratum landforms three being consistent with actual conditions
Tie up physical model；
S12, by S8 three-dimensional goaf physical model and S11 in three-dimensional mine physical model in MIDAS finite element
Boolean calculation is carried out in analysis software to get the three-dimensional mine physical model comprising goaf has been arrived.
The present invention also provides a kind of modeling and analysis methods of mine worked-out section, method includes the following steps:
Step step S1~S12 as previously described and step S13~S16, S13 as described below, it will be obtained in S12
To goaf-country rock physical model carry out fining grid dividing, obtain the mine three-dimensional grid model comprising goaf；It is logical
Grid model is crossed, the physical model being previously obtained can be used for mechanics operation, to obtain the accurate mechanics in goaf
Data judge the stability in goaf；
S14, in MIDAS finite element analysis software by S13 three-dimensional grid model save at FPN file；
S15, FPNtoFLAC is utilized3DFPN file in S14 is converted into FLAC by .exe software3DFile；
S16, the FLAC that will be generated in S153DFile imported into FLAC3DIn software, every kind of rock mass physical power in model is assigned
Parameter is learned, analysis operating condition needed for establishing research carries out the analysis of various situations to Goaf Area.
Wherein, required analysis operating condition is studied for example including linearity and non-linearity static analysis, kinematic analysis, Analysis of The Seepage
Or orebody mining and goaf filling are analyzed；
After walking by S16, the corresponding data such as lower angle can be obtained: such as stress concentration, ore pillar axle power, ore pillar position
It moves, top plate is displaced and/or ore pillar plastic zone；These analyses can be used to judge the stability in goaf, such as: large area plastic zone
Or top plate displacement is larger, then the stability in goaf is with regard to poor.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of modeling and analysis methods of mine worked-out section, which is characterized in that method includes the following steps:
S1, it is scanned using three-dimensional laser scanner in mine worked-out section, mine worked-out section is scanned into point cloud data；
S2, obtained cloud of each scan node is spliced by handling the software of three-dimensional laser scanner point cloud data
Processing obtains the threedimensional model constructed by cloud in entire goaf；
S3, it is saved what processing was completed by the threedimensional model of the cloud building software of processing three-dimensional laser scanner point cloud data
At the point cloud file of the openable file format of CAD software；
S4, the point cloud file of the openable file format of the CAD software of preservation is imported into CAD software, in CAD software
The profile in goaf is depicted with spline curve, forms the curved surface profile line in each face in goaf, and is saved respectively；
S5, the curved surface profile line in each face obtained in S4 is converted into the formatted file that MIDAS software can identify, and saved；
S6, the formatted file that can identify the MIDAS software of each curved surface in S5, using MIDAS finite element analysis software with
Interface between CAD software is imported into MIDAS finite element analysis software, and the contour line in each face is in the same three-dimensional space
Among, reduce the contour line of each curved surface in practical goaf；
S7, using the pre-treatment modeling function in MIDAS finite element analysis software by the contour generating face in each face, then by face
Generate entity；
S8, generation multiple entities realized by the entity intersection operation in MIDAS finite element analysis software to three-dimensional goaf
The reconstruct of model forms the three-dimensional goaf physical model being consistent with actual conditions；
It is S9, independent with step S1~S8, can its first, behind or simultaneously, utilize MIDAS finite element analysis software
Middle stratum generator, can be by with elevation goaf earth's surface contour lines creation and the Terrain surficial model that is actually consistent；
It is S10, independent with step S1~S8 and step S9, the mine of certain size is established using MIDAS finite element analysis software
Entity, the entity include the geo-logical terrain in mine；
S11, the mine entity in ground surface obtained in S9 and S10 is carried out to face cutting physical manipulations to get having arrived and reality
The mine stratum landforms three-dimensional entity model that situation is consistent；
S12, by S8 three-dimensional goaf physical model and S11 in three-dimensional mine physical model carry out Boolean calculation to get
The three-dimensional mine physical model comprising goaf is arrived；
S13, goaf obtained in S12-country rock physical model is subjected to fining grid using MIDAS finite element analysis software
It divides, obtains the mine three-dimensional grid model comprising goaf；
S14, in MIDAS finite element analysis software by S13 three-dimensional grid model save at FPN file；
S15, FPNtoFLAC is utilized3DFPN file in S14 is converted into FLAC by .exe software3DFile；
S16, the FLAC that will be generated in S153DFile imported into FLAC3DIn software, every kind of rock mass physical mechanics ginseng in model is assigned
Number, analysis operating condition needed for establishing research, the analysis of various situations is carried out to Goaf Area.
2. the method according to claim 1, wherein before step S1, first plan to be scanned it is mined out
Area, and coordinate origin is found in goaf, the position in practical goaf is corresponded to convenient for the goaf point cloud data by scanning,
Foundation for later period model lays the foundation.
3. the method according to claim 1, wherein in step S1, further include using data splice marks, so as to
Splicing identification is carried out to the data for carrying out obtaining after three-dimensional laser scanner operation more than twice in goaf.
4. according to the method described in claim 3, it is characterized in that, the data splice marks include at least two in step S1
Group ball, and every group of ball is three or more, when every subjob, put in three, the front of three-dimensional laser scanner different location
Three balls are set or hang, when this three-dimensional laser scanner operation completion and when scanner is forwarded in front of these three balls,
Second group of ball is placed or is hung on three different locations in front of three-dimensional laser scanner operation；It is preferred that the ball
For readily identified Archon at dark.
5. the method according to claim 1, wherein handling three-dimensional laser scanner point cloud number described in step S2
According to software be FARO Scene software.
6. the method according to claim 1, wherein CAD software is AutoCAD.
7. the method according to claim 1, wherein the openable tray of CAD software described in step S3
Formula is .rcp format.
8. the method according to claim 1, wherein the curved surface profile line in each face is each face in step S4
Irregular Boundary Surface contour line.
9. the method according to claim 1, wherein the format that MIDAS software can identify in step S5 is .dxf
Format.
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