CN106447776A - Complex fractured rock mass physical model manufactured based on 3D printing productionand modeling method - Google Patents

Complex fractured rock mass physical model manufactured based on 3D printing productionand modeling method Download PDF

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CN106447776A
CN106447776A CN201610844752.5A CN201610844752A CN106447776A CN 106447776 A CN106447776 A CN 106447776A CN 201610844752 A CN201610844752 A CN 201610844752A CN 106447776 A CN106447776 A CN 106447776A
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model
printing
physical model
rock mass
structural plane
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王培涛
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University of Science and Technology Beijing USTB
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00Three dimensional [3D] modelling, e.g. data description of 3D objects
    • G06T17/05Geographic models
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B33ADDITIVE MANUFACTURING TECHNOLOGY
    • B33YADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
    • B33Y50/00Data acquisition or data processing for additive manufacturing
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00Image analysis
    • G06T7/60Analysis of geometric attributes
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00Scenes; Scene-specific elements
    • G06V20/60Type of objects
    • G06V20/64Three-dimensional objects
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2200/00Indexing scheme for image data processing or generation, in general
    • G06T2200/08Indexing scheme for image data processing or generation, in general involving all processing steps from image acquisition to 3D model generation

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
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  • Software Systems (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Remote Sensing (AREA)
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  • Computer Graphics (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
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Abstract

The invention discloses a complex fractured rock mass physical model manufactured based on 3D printing production and a modeling method. By using 3D printing, a complex fractured network model entity is reconstructed and a model suitable for an indoor analog simulation experiment is established; the complex fractured rock mass physical model comprises a discrete fracture network DFN model and an entity discrete joint network DFN model. Based on the 3D printing, the complex fractured network model entity can be reconstructed and the model suitable for the indoor analog simulation experiment is established, and an effective method can be provided for an indoor laboratory research on complex fractured rock mass mechanical behaviors. A reliable and effective method is provided for the rock mechanical test field by adopting fractured rock mass model reconstruction and fractured network entity model construction through the 3D printing; with the help of the 3D printing technology, the problems that modeling is difficult to conduct and the cost is high in the current complex fractured rock mass physical model indoor experiment can be effectively solved.

Description

The complicated crack rock physical model for being made based on 3D printing and modeling method
Technical field
The invention belongs to Geotechnical Engineering technical field of measurement and test, more particularly to a kind of complicated crack rock based on 3D printing making Body physical model and modeling method.
Background technology
In terms of rock mechanics desk research, complex model modeling method is limited to, current research, is directed to rock more Stone or rocks (Gypsum Fibrosum, concrete) material are studied, for the mechanics row of the similar rock mass materials containing complicated fractured zones Less for studying.With rise and the progress of 3D printing technique, the solid modelling for realizing labyrinth is increasingly becoming possibility.Mesh Before, 3D printing technique is relatively wide in the application of the fields such as medical science, machine-building, automobile, and the application in terms of rock mechanics is also less, especially Its application achievements in terms of the Geometric Modeling of labyrinth face is rarely seen in report.Due to being rich in a large amount of random distributions in actual rock mass Complex geometry form joint structural plane, and the Research on Mechanical Properties of this rock mass is for rock mass engineering project stability analyses and power Learn parameter acquiring and there is important value, due to complexity, the randomness of the internal joint structural plane space geometry distribution of rock mass, for This rock mass physical test model containing complicated joint not yet sees report.At present ROCK MASS JOINT knot is carried out using 3D printing technique In terms of the mechanical analyses of structure face, the scheme that mainly has two categories below similar:First kind method is to adopt 3D printing technique, studies single The rough surface form of joint plane, and then it is modeled the mechanical test related with development, such as direct shear test etc..Equations of The Second Kind side Method is to adopt 3D printing technique, carries out smoothing the rock-like materials modeling at joint containing wall scroll, and research smooths the inclination angle at joint to examination The mechanics influence of part.Prior art is modeled mainly for single structure face, and main method is entered by the way of laser scanning The scanning of row single structure face complex geometry form, microcomputer modelling, carry out 3D printing further and generate physical model.And as Fig. 1 Shown, in jointed rock mass, structural plane is often complex distributions, and current research report has the following disadvantages:(1) natural rock mass In structural plane there is spatial distribution complexity and randomness, at present research not yet carries out physics for complicated crack geometric network Modeling.(2) complicated crack rock physical model and joint modeling is carried out, needs to start with from on-site land survey, through series structure face Information Statistics arrange microcomputer modelling and optimize the foundation of 3D printing model and realize the serial procedures such as physical model foundation, Not yet there is the proposition of related system method at present.
In sum, current complexity crack rock physical model laboratory test modeling hardly possible, high cost, seriously constrain industry Development.
Content of the invention
It is an object of the invention to provide a kind of complicated crack rock physical model based on 3D printing making and modeling side Method, it is intended to solve the problems, such as current complexity crack rock physical model laboratory test modeling hardly possible, high cost.
The present invention is achieved in that a kind of modeling side of the complicated crack rock physical model based on 3D printing making Method, the modeling method obtains the spatial distribution of joint fissure first by live structural plane test;Using Monte Carlo Method realizes computer model three-dimensional modeling;Finally, using 3D printing, complicated Fracture Networks model entity is reconstructed;Set up It is applicable to the model of indoor similarity simulation experiment.
Further, the modeling method of the complicated crack rock physical model based on 3D printing making includes following step Suddenly:
Step one, using 3GSM rock mass discontinuity digital image understanding technology, by live structural plane digital image pickup, Three-dimensional rock mass space surface orientation, the demarcation of size, and then spatial distribution different stage structural plane is accurately identified, adopt Monte Carlo modeling method, sets up discrete fracture network 3DDFN model;
Step 2,3DDFN mathematical model is derived .STL formatted file, the discernible model format of output 3D printer; Using 3D printer, set up the joint distribution model of 3D printing technique, and generate different scale, the quasi- two dimension of different distributions, three Dimension discrete forcing approach.
Further, the step one obtains the structural plane packet of different scales rank:Small-scale auxiliary fault, primary The small joint of joint plane, weathering fissures and connectivity extreme difference with certain regularity of distribution and statistical significance or hidden fine fisssure face knot Structure face;For joint plane, weathering fissures level structure face, a point two ways determines joint spatial distribution.
Further include:
(1) on the basis of 3GSM three-dimensional rock mass not contact measurement digital image system, to spatial distribution different stage structure The carrying out in face accurately identifies, and is grouped by space orientation, structural plane, structural plane space geometry information, fluctuating situation is carried out point Analysis, obtains the sample statistics value of all stochastic variables in each group sample, finally gives statistical distribution form;
(2) it is grouped according to occurrence cluster, spacing and turn-off long per the group average occurrence of structural plane, mark is calculated, according to Statistical distribution method simultaneously assumes that structural plane generates the spatial distribution with group structural plane for collar plate shape;
(3) finally opened using visual programming platform Visual Basic and 3DMine Mine digitalization 3 d modeling system Send out Fractures Spatial Distribution visualization of 3 d model.
Another object of the present invention is to providing a kind of complicated crack rock physical model based on 3D printing making Modeling method complicated crack rock physical model, described complexity crack rock physical model include:Discrete fracture network DFN Mathematical model and entity discreteness Joint network simulation DFN physical model.
Another object of the present invention is to providing a kind of application the complicated crack rock physics for making based on 3D printing The ROCK MASS JOINT structure face mechanic analysis method of the modeling method of model.
Another object of the present invention is to providing a kind of application the complicated crack rock physics for making based on 3D printing The Geotechnical Engineering method of testing of the modeling method of model.
The complicated crack rock physical model for being made based on 3D printing and modeling method that the present invention is provided, are beaten based on 3D Complicated Fracture Networks model can be carried out entity reconstruct by print, set up the mould for being applicable to indoor similarity simulation experiment further Type, can provide effective method for the in-house laboratory investigation of complicated crack rock mechanical behavior.The present invention adopts crack rock Model reconstruction, 3D printing build the technological highlights that Fracture Networks physical model is the present invention, will lead in rock mechanics experiment Domain provides a kind of reliable, effective method, is the laboratory test research side of the mechanical characteristics such as rock mass mechanics deformation, destruction, intensity Face provides model basis, and can provide the result foundation of inside authentication for complicated numerical experiments;Due to rock mass section Reason spatial distribution complexity, directly carries out similar test high cost in jointed rock mass room, and is difficult to truly reflect structure space of planes Form;Often yardstick is larger to carry out similar test in rock mass mechanics characteristic room at present, and consumptive material such as cement mortar etc. is consumed greatly, is also needed Tested by large pressing machine, current complexity crack rock physical model can be efficiently solved by 3D printing technique Laboratory test modeling is difficult, the problem of high cost, and model dimension is little, goes for conventional press and carry out mechanical characteristic dividing Analysis;Will be significantly relatively low test consumable (cement mortar, quartz sand etc.) suitable for small-scale simulation rock mass laboratory test, and often Rule forcing press can achieve.
Description of the drawings
Fig. 1 is the modeling method of the complicated crack rock physical model based on 3D printing making provided in an embodiment of the present invention Flow chart.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that specific embodiment described herein is not used to only in order to explain the present invention Limit the present invention.
The present invention establishes multigroup complex geometry distributed architecture EDS maps model, is produced based on 3D printing technique and is applied to The discrete forcing approach DFN of laboratory experiment and related die, propose to beat from on-the-spot test microcomputer modelling 3D model Print the method for making similar Physical Experiment.
Below in conjunction with the accompanying drawings the application principle of the present invention is explained in detail.
Complicated crack rock physical model based on 3D printing making provided in an embodiment of the present invention is:Discrete fracture network DFN model and entity discreteness Joint network simulation DFN model.
As shown in figure 1, the building of the complicated crack rock physical model based on 3D printing making provided in an embodiment of the present invention Mould method is comprised the following steps:
S101:Using 3GSM rock mass discontinuity digital image understanding technology, spatial distribution different stage structural plane is carried out Accurately identify, set up discrete fracture network DFN model;
S102:Using XYZ Printing PRO 3D printer, the joint distribution mould suitable for 3D printing technique is set up Type, and generate different scale, the two dimension of different distributions, 3 d-dem Fracture Networks model.
The modeling method of the complicated crack rock physical model for being made based on 3D printing of the embodiment of the present invention is specifically included Following steps:
Step 1:Based on 3GSM rock mass discontinuity digital image understanding technology, spatial distribution different stage structural plane is carried out Accurately identify, and set up discrete fracture network DFN model
Obtain the structural plane packet of different scales rank:III (small-scale auxiliary fault), IV (primary with certain point The joint plane of cloth rule and statistical significance, weathering fissures etc.) and V (the small joint of connectivity extreme difference or hidden fine fisssure face) level knot Structure face.For the IV level structure face with statistical significance, a point two ways determines joint spatial distribution:
I () in 3GSM three-dimensional rock mass on the basis of contact measurement digital image system, to spatial distribution different stage structure The carrying out in face accurately identifies, and is grouped by space orientation, structural plane, structural plane space geometry information, fluctuating situation is carried out point Analysis, obtains the sample statistics value of all stochastic variables in each group sample, finally gives statistical distribution form.
(ii) it is grouped according to occurrence cluster, spacing and turn-off long per the group average occurrence of structural plane, mark is calculated, is pressed According to statistical distribution method and assume structural plane for collar plate shape generate with group structural plane spatial distribution.
(iii) finally using visual programming platform Visual Basic and 3DMine Mine digitalization 3 d modeling system Development structure space of planes spread visualization of 3 d model.
Step 2:Entity discreteness Joint network simulation DFN model is set up based on 3D printing technique:
Using XYZ Printing PRO 3D printer, the joint distribution model for going for 3D printing technique is set up, And generate different scale, the two dimension of different distributions, 3 d-dem Fracture Networks model.
With reference to specific embodiment, the application effect of the present invention is explained in detail.
(1) live selecting structure face engineered locations, using Austrian 3GSM digital Photogrammetric System or other structures Face investigative technique, carries out live structural surface information investigation, statistics, obtains structural plane occurrence distributed intelligence.
Software system carries out a series of technical finesse such as benchmark calibration, pixel Point matching, figure to the image of different angles Distortion of image bias correction etc., realizes the true three-dimensional model reconfiguration of body surface, sees from any orientation on computer visualization screen Examine 3D solid image.Identification, positioning, fitting, tracking and geometric shape information parameter to each structural plane individuality (is produced Shape, mark length, spacing, turn-off etc.) acquisition, and carry out the classification of numerous and complicated structural plane, packet, geometric parameter statistics.
(2) Monte Carlo method is adopted, it is assumed that structural plane is collar plate shape, generation with the spatial distribution for organizing structural plane, profit Fractures Spatial Distribution visualization of 3 d DFN model is set up with visual programming platform Visual Basic.
(3) DFN mathematical model is derived .STL form, sets up 3D printing software and can recognize that form;Using XYZ Printing PRO 3D printer, sets up and goes for the joint distribution model of 3D printing technique, and generate different scale, The two dimension of different distributions, 3 d-dem Fracture Networks model, the model for being printed can be used for indoor mechanical test.
Presently preferred embodiments of the present invention is the foregoing is only, not in order to limit the present invention, all essences in the present invention Any modification, equivalent and improvement that is made within god and principle etc., should be included within the scope of the present invention.

Claims (7)

1. a kind of modeling method of the complicated crack rock physical model based on 3D printing making, it is characterised in that the modeling Method adopts 3D printing, and complicated Fracture Networks model entity is reconstructed;Set up the mould for being applicable to indoor similarity simulation experiment Type.
2. the modeling method of the complicated crack rock physical model for being made based on 3D printing as claimed in claim 1, its feature It is, the modeling method of the complicated crack rock physical model based on 3D printing making is comprised the following steps:
Step one, using 3GSM rock mass discontinuity digital image understanding technology, by live structural plane digital image pickup, three-dimensional Rock mass space surface orientation, the demarcation of size, and then spatial distribution different stage structural plane is accurately identified, adopt Monte Carlo modeling method, sets up discrete fracture network 3DDFN model;
Step 2,3DDFN mathematical model is derived .STL formatted file, the discernible model format of output 3D printer;Using 3D printer, sets up the joint distribution model of 3D printing technique, and generate different scale, the quasi- two dimension of different distributions, three-dimensional from Spallation gap network model.
3. the modeling method of the complicated crack rock physical model for being made based on 3D printing as claimed in claim 2, its feature It is, the step one obtains the structural plane packet of different scales rank:Small-scale auxiliary fault, primary with certain point The joint plane of cloth rule and statistical significance, the small joint of weathering fissures and connectivity extreme difference or hidden fine fisssure face structural plane;For Joint plane, weathering fissures level structure face, a point two ways determines joint spatial distribution.
4. the modeling method of the complicated crack rock physical model for being made based on 3D printing as claimed in claim 3, its feature It is, further includes:
(1) on the basis of 3GSM three-dimensional rock mass not contact measurement digital image system, to spatial distribution different stage structural plane Accurately identified, be grouped by space orientation, structural plane, structural plane space geometry information, fluctuating situation be analyzed, obtained To in each group sample, the sample statistics value of all stochastic variables, finally gives statistical distribution form;
(2) it is grouped according to occurrence cluster, spacing and turn-off long per the group average occurrence of structural plane, mark is calculated, according to statistics Location mode simultaneously assumes that structural plane generates the spatial distribution with group structural plane for collar plate shape;
(3) finally using visual programming platform Visual Basic and 3DMine Mine digitalization 3 d modeling system exploitation knot Structure space of planes spread visualization of 3 d model.
5. a kind of complexity of the modeling method of the complicated crack rock physical model for being made based on 3D printing as claimed in claim 1 Crack rock physical model, it is characterised in that the complexity crack rock physical model includes:Discrete fracture network DFN mathematics Model and entity discreteness Joint network simulation DFN physical model.
6. the building of complicated crack rock physical model for being made based on 3D printing described in a kind of application claim 1-4 any one The ROCK MASS JOINT structure face mechanic analysis method of mould method.
7. the building of complicated crack rock physical model for being made based on 3D printing described in a kind of application claim 1-4 any one The Geotechnical Engineering method of testing of mould method.
CN201610844752.5A 2016-09-22 2016-09-22 Complex fractured rock mass physical model manufactured based on 3D printing productionand modeling method Pending CN106447776A (en)

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CN107203670A (en) * 2017-06-05 2017-09-26 北京科技大学 A kind of discrete Joint network simulation model building method of coarse stochastic pattern
CN108252336A (en) * 2018-02-01 2018-07-06 重庆大学 A kind of method that discontinuous body three-dimensional slope indoor model test is built by 3D printing technique
CN108383447A (en) * 2018-03-19 2018-08-10 上海理工大学 The method for calculating nano-concrete energy to failure based on 3D printing technique
CN108643894A (en) * 2018-03-30 2018-10-12 长江大学 Three-dimensional oil reservoir physical model tomography setting method
CN108830317A (en) * 2018-06-08 2018-11-16 绍兴文理学院 The quick fine obtaining value method of open mine side slope ROCK MASS JOINT occurrence based on digital photogrammetry
CN108959823A (en) * 2018-08-01 2018-12-07 天地科技股份有限公司 A kind of crack opening mode and filled-type complexity crack rock physical model construction method
CN110135515A (en) * 2019-05-23 2019-08-16 南京工业大学 A kind of structural homogeneity of rock mass automatic Mesh Partition Method based on image texture
CN110126058A (en) * 2019-05-20 2019-08-16 重庆大学 A kind of rock sample preparation method based on CT visualization and 3D printing
CN110441122A (en) * 2019-07-29 2019-11-12 中国矿业大学 The anchoring test block Mold Making of standard cylinder joint and operating method based on 3D printing
CN111605182A (en) * 2019-12-11 2020-09-01 四川省科建煤炭产业技术研究院有限公司 Preparation method of heterogeneous coal core of soft coal seam
CN111611632A (en) * 2020-04-17 2020-09-01 长沙矿山研究院有限责任公司 Modeling method of discrete fracture network rock mass model based on photocuring 3D printing
CN111896565A (en) * 2020-06-29 2020-11-06 河海大学 Method for testing permeability and bearing capacity of surrounding rock of deep-buried high-pressure grouting tunnel
CN112304216A (en) * 2020-09-30 2021-02-02 中电建冀交高速公路投资发展有限公司 Rock mass information acquisition test system based on 3D printing model and verification method thereof
CN112763288A (en) * 2020-12-22 2021-05-07 清华大学 Rock mass model manufacturing method based on 3D printing and combined with any cracks
CN113656946A (en) * 2021-07-27 2021-11-16 中国地质大学(武汉) Geometric influence analysis method for rock mass mechanical parameters containing joint network
CN115330975A (en) * 2022-07-21 2022-11-11 北京科技大学 Novel three-dimensional random rough structural surface network model and construction method and device

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Cited By (24)

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Publication number Priority date Publication date Assignee Title
CN107203670B (en) * 2017-06-05 2019-06-14 北京科技大学 A kind of discrete Joint network simulation model building method of coarse stochastic pattern
CN107203670A (en) * 2017-06-05 2017-09-26 北京科技大学 A kind of discrete Joint network simulation model building method of coarse stochastic pattern
CN108252336A (en) * 2018-02-01 2018-07-06 重庆大学 A kind of method that discontinuous body three-dimensional slope indoor model test is built by 3D printing technique
CN108383447A (en) * 2018-03-19 2018-08-10 上海理工大学 The method for calculating nano-concrete energy to failure based on 3D printing technique
CN108643894B (en) * 2018-03-30 2022-03-29 长江大学 Three-dimensional oil reservoir physical model fault setting method
CN108643894A (en) * 2018-03-30 2018-10-12 长江大学 Three-dimensional oil reservoir physical model tomography setting method
CN108830317A (en) * 2018-06-08 2018-11-16 绍兴文理学院 The quick fine obtaining value method of open mine side slope ROCK MASS JOINT occurrence based on digital photogrammetry
CN108830317B (en) * 2018-06-08 2022-04-15 宁波大学 Rapid and fine evaluation method for joint attitude of surface mine slope rock mass based on digital photogrammetry
CN108959823B (en) * 2018-08-01 2022-12-02 天地科技股份有限公司 Fracture opening type and filling type complex fractured rock physical model construction method
CN108959823A (en) * 2018-08-01 2018-12-07 天地科技股份有限公司 A kind of crack opening mode and filled-type complexity crack rock physical model construction method
CN110126058A (en) * 2019-05-20 2019-08-16 重庆大学 A kind of rock sample preparation method based on CT visualization and 3D printing
CN110135515A (en) * 2019-05-23 2019-08-16 南京工业大学 A kind of structural homogeneity of rock mass automatic Mesh Partition Method based on image texture
CN110441122B (en) * 2019-07-29 2021-06-11 中国矿业大学 Manufacturing and operating method of standard joint anchoring test block mold based on 3D printing
CN110441122A (en) * 2019-07-29 2019-11-12 中国矿业大学 The anchoring test block Mold Making of standard cylinder joint and operating method based on 3D printing
CN111605182B (en) * 2019-12-11 2022-03-15 四川省科建煤炭产业技术研究院有限公司 Preparation method of heterogeneous coal core of soft coal seam
CN111605182A (en) * 2019-12-11 2020-09-01 四川省科建煤炭产业技术研究院有限公司 Preparation method of heterogeneous coal core of soft coal seam
CN111611632A (en) * 2020-04-17 2020-09-01 长沙矿山研究院有限责任公司 Modeling method of discrete fracture network rock mass model based on photocuring 3D printing
CN111896565A (en) * 2020-06-29 2020-11-06 河海大学 Method for testing permeability and bearing capacity of surrounding rock of deep-buried high-pressure grouting tunnel
CN112304216A (en) * 2020-09-30 2021-02-02 中电建冀交高速公路投资发展有限公司 Rock mass information acquisition test system based on 3D printing model and verification method thereof
CN112304216B (en) * 2020-09-30 2022-04-08 中电建冀交高速公路投资发展有限公司 Rock mass information acquisition test system based on 3D printing model and verification method thereof
CN112763288A (en) * 2020-12-22 2021-05-07 清华大学 Rock mass model manufacturing method based on 3D printing and combined with any cracks
CN113656946A (en) * 2021-07-27 2021-11-16 中国地质大学(武汉) Geometric influence analysis method for rock mass mechanical parameters containing joint network
CN113656946B (en) * 2021-07-27 2024-02-09 中国地质大学(武汉) Geometrical influence analysis method for mechanical parameters of rock mass with joint network
CN115330975A (en) * 2022-07-21 2022-11-11 北京科技大学 Novel three-dimensional random rough structural surface network model and construction method and device

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