CN106353351A - Similar material simulation test table for CT scanning - Google Patents
Similar material simulation test table for CT scanning Download PDFInfo
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- CN106353351A CN106353351A CN201610940762.9A CN201610940762A CN106353351A CN 106353351 A CN106353351 A CN 106353351A CN 201610940762 A CN201610940762 A CN 201610940762A CN 106353351 A CN106353351 A CN 106353351A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/44—Sample treatment involving radiation, e.g. heat
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Abstract
The invention discloses a similar material simulation test table for CT scanning, which is characterized by comprising a control and data processing system, a test box body, a scanning system and an electric heating excavation system. According to the test table, a paraffin granular material serves as a coal seam similar material, and by virtue of the electric heating excavation system, the paraffin granular material is melted by using electric heating wires for heating, so that the excavation process of a working face can be effectively simulated, and the labor can be saved; and by virtue of heating layer by layer through paving multiple layers of electric heating nets, effective simulation of layer mining of thick coal seams can be realized. Meanwhile, in the simulated mining process, the scanning system can be used for performing CT scanning on a coal-rock mass model to acquire section images of model overlying strata movement, deformation and damage, and a CT image three-dimensional reconstruction technology is combined so as to realize output of three-dimensional images of overlying strata space configuration. The test table is convenient in operation, can realize effective observation of space configuration characteristics of overlying strata, and is favorable for deeply and comprehensively mastering movement and deformation rules of the overlying strata.
Description
Technical field
The invention belongs to mining and Geotechnical Engineering Equivalent Materials Testing research field are and in particular to a kind of ct scans phase
Like material simulation testing stand.
Background technology
In colliery industry production process, stope subsidence and deformation in rock overburden rule can be the ore deposit such as stope support and gas, fire
Mountain diaster prevention and control provides theoretical direction, and for coal seam, safely and efficiently back production is significant.Equivalent material simulating is mining
Important research means with geotechnical study stope subsidence and deformation in rock overburden rule.But existing Equivalent Materials Testing
Platform, is all two dimensional flat form mostly, is only capable of representing the overlying strata motion destructive characteristics in certain section, and due to there is model
Boundary effect, lead to experimental phenomena data larger with practical situation error.The behaviour of the three-dimensional analog simulation testing stand of minority
Face many difficult problems as process, be that threedimensional model is simulating excavation difficulty when working face of coal seam pushes to adopt, for common thickness first
Coal seam separate zone production, is less susceptible to simulate.Difficult point the most thorny is, traditional three-dimensional analog simulation testing stand cannot observe mould
The movement of the internal rock mass of type and deformation behaviour, and then cannot be to the motion morphology understood in depth with overall assurance stope overlying strata.
This invention address that a kind of ct of research and development scans Equivalent Materials Testing platform, solve existing equivalent material simulating examination
Test many deficiencies of platform presence, the science to coal seam exploitation process of realizing is simulated and accurate to overlying strata space movement and deformation feature
Observation.
Content of the invention
The present invention discloses a kind of ct scanning Equivalent Materials Testing platform, using ct scanning technique, can obtain simulation and open
The profile morphology that during adopting, stope overlying strata move and deform, and combine ct 3-dimensional reconstruction technology, realize overlying strata space shape
The output of state 3-D view.Meanwhile, the present invention, by the way of electric-heating-wire-heating melted paraffin granular materialss, can achieve to three-dimensional
It is convenient, fast that scale model excavates.
The technical solution used in the present invention includes:
A kind of ct scanning Equivalent Materials Testing platform is it is characterised in that include controlling data processing system, proof box
Body, scanning system, electric heating excavate system.
During described control data processing system controls ct to scan Equivalent Materials Testing by computer program
Image scanning, meanwhile, control data processing system formed by ct three-dimensional reconstruction and export stope overlying strata three-dimensional space
Between form image.
Described test casing is a cubic space, and four pillars are arranged at bottom, after be a metal baffle, front, left and right four
Face is bar shaped organic glass baffle and is spliced by screw.
Described scanning system includes gantry and return pulley, and gantry is a square set, and front is around test casing, its work(
Can be to realize the coal and rock of test box house is scanned, obtain the vertical cross section image of coal and rock.Described return pulley is subject to
Computer controls, install gantry bottom, can slide, drive gantry with this on the guide rail between pillar before and after test casing
Movable, realize the scanning in various location, and then obtain the profile image of various location.
Described electric heating excavates system and includes controller, electric network, paraffin particles material, discharging tube.Described electric network is many
The parallel heating wire of bar, is layed in the plane domain that coal seam analog material excavates, and every group of heating wire all should be parallel to simulation work
Make face.Form multigroup parallel loop, control each loop heating wire in electric network that paraffin particles material is carried out using controller
Heating, so as to fusing, thus simulates the excavation in coal seam.Described paraffin particles material composition be semi-refined paraffin wax, have fusing point low,
Nontoxic, heat meltable property, for simulating coal seam material.Described discharging tube is two plastic straws, and its tube wall arranges cloth
Put multiple circular holes.Discharging tube is layed in the plane domain two ends that coal seam analog material excavates respectively, and stays a termination in proof box
External side.In model digging process, the liquid producing after paraffin particles melt material can discharge test casing by discharging tube.
A kind of ct scanning Equivalent Materials Testing platform is it is characterised in that the operation of testing stand comprises the following steps:
Step 1, scale model make
According to the analog simulation theoretical formulation likelihood ratio, thus design the mechanics parameter of each coal rock layer, and carry out coal and rock phase
Like the preparation of material, afterwards according to actual formation sequence, test box bottom lays model, and carries out with laying, successively
Install splicing before, the organic glass baffle in left and right three faces, note simultaneously install splicing above baffle plate when, coal seam is partly reserved
The notch of coal output layer excavation simulation.Note when coal seam analog material is laid, the conventional analog material of no-dig technique region laying, open
Dig region laying paraffin particles material as coal seam simulation material, electric network level need to be layed in the paraffin excavating region laying
In granular materialss.If the heating fusing radius of every group of heating wire is r, then ensure that fusing fully and uniformly is entirely intended
Excavate region, the spacing of each heating wire should be 2r.
Step 2, model excavate
According to working face mining actual speed, in conjunction with the time similarity ratio in the theory of similarity, converse model and excavate every time
Drilling depth m, then should start every timeGroup heating wire carry out heating excavate, coal seam analog material fusing produce liquid and
Steam enters discharging tube by the circular hole on discharging tube, and then it is external to discharge proof box by discharging tube.
It should be noted that this testing stand can carry out the analog simulation of thick seam slicing system, now need at each point
Lay electric network respectively in layer, be successively electrically heated during excavation, be achieved in hierarchical simulation and excavate.
Step 3, ct scanning
When working face of coal seam pushes to adopt to a certain position, in conjunction with the precision required by three-dimensional reconstruction, select on guide rail
Several positions are as scanning element.Control return pulley traction gantry, in given location, scale model is scanned, obtains coal
Multiple vertical cross section images of rock stratum.
Step 4, three-dimensional reconstruction
By controlling the three-dimensional reconstruction software in data processing system, by multiple overlying strata forms in step 3 obtained
Profile image carries out three-dimensional reconstruction, the overlying strata Form-space image of work surface periphery, and then realizes mobile to overlying strata and destruction
Comprehensively, deep analysis, provides for mine safety mining and instructs.
The useful achievement that the present invention is brought is as follows:
The ct scanning Equivalent Materials Testing platform that the present invention is researched and developed, using ct scanning technique, has obtained stope periphery
Each position rock mass deformation and destruction profile image, in combination with three-dimensional reconstruction, can build the three-dimensional of Overburden deformation and failure
Solid shape, is easy to the research to overlying strata migration and destructive characteristics during seam mining.Meanwhile, this testing stand adopts heating wire
Plus the mode of paraffin particles material instead of the hand excavation of traditional similarity simulation experiment it is possible to pass through to lay multilamellar electric network
The mode successively heating, realizes effective simulation of thick seam slicing system, saves manpower, workable.All in all, this examination
Test platform can with the movement of stope overlying strata during science, effective simulation seam mining and deformation rule, and be capable of right
Effective observation of the spatial shape feature of stope overlying strata, so can more deep and comprehensive grasp mining overburden movement and
Deformation rule, is stope support and mine disaster preventing and treating provides and instructs, and is conducive to the safety in production of colliery industry.
Brief description
Fig. 1 scans Equivalent Materials Testing platform for ct
Fig. 2 lays floor map for electric network
Description of reference numerals:
In figure: 1, computer, 2, test casing, 3, pillar, 4, gantry, 5, return pulley, 6, guide rail, 7, discharging tube, 8, control
Device processed, 9, excavate notch, 10, heating wire.
Specific embodiment
The invention provides a kind of ct scans Equivalent Materials Testing platform, below by drawings and Examples, with certain ore deposit 3
Seam mining is engineering background, and the overlying strata during this seam mining of simulation study are mobile, the spatial shape of deformation.To the present invention
Technical scheme be described in further detail.
First the test hardware included by the present invention is explained as follows:
In conjunction with shown in Fig. 1, ct scans Equivalent Materials Testing platform, comprising:
A kind of ct scanning Equivalent Materials Testing platform is it is characterised in that include controlling data processing system, proof box
Body, scanning system, electric heating excavate system.
Described control data processing system is by sweeping during computer 1 control ct scanning Equivalent Materials Testing
Retouch process, meanwhile, control data processing system to be formed by ct three-dimensional reconstruction and export stope overlying strata three dimensions shape
The image of state.
Described test casing is a cubic space, and four pillars 3 are arranged at bottom, after be a metal baffle, front, left and right
Four sides is bar shaped organic glass baffle and is spliced by screw.
Described scanning system includes gantry 4 and return pulley 5, and gantry 4 is a square set, front cincture test casing 2,
Its function is to realize the coal petrography body Model of test box house is scanned, and obtains the vertical cross section form of coal and rock.Institute
State return pulley 5 to be controlled by computer 1, install gantry 4 bottom, can slide on the guide rail 6 between pillar before and after test casing 2,
Drive gantry 4 to move forward and backward with this, realize the scanning in various location, and then obtain the profile image of various location.
Described electric heating excavates system and includes discharging tube 7, controller 8, electric network, paraffin particles material.Described paraffin particles
Material composition is semi-refined paraffin wax, has that fusing point is low, nontoxic, heat meltable property, for simulating coal seam material.Described electricity
Heat supply network is made up of the heating wire 10 of a plurality of parallel laid, is layed in the plane domain that coal seam analog material excavates, every group of electric heating
Silk it should be noted that parallel to simulation work surface.Form multigroup parallel loop, control each loop electric heating in electric network using controller 8
Silk is heated so as to be melted to paraffin particles material, thus simulates the excavation in coal seam.Described discharging tube 7 is that two plastics are thin
Pipe, its multiple circular hole of tube wall arranged.Discharging tube 7 is layed in the plane domain two ends that coal seam analog material excavates respectively, and
Stay a termination outside test casing 2.In model digging process, the liquid producing after paraffin particles melt material can pass through discharge opeing
Test casing 2 discharged by pipe 7.
A kind of ct scanning Equivalent Materials Testing platform is it is characterised in that the operation of testing stand comprises the following steps:
Step 1, scale model make
According to coal seam actual formation condition, carry out boring sampling, test out coal rock layer mechanical property parameter, formulate similar
Than, thus design the mechanics parameter of each coal rock layer, and carry out the preparation of coal and rock analog material, model coal rock layer materials proportioning and
Laying level is as shown in table 1.For 3 coal seams, the similar material obtaining is prepared, using corresponding formula in table 1, in no-dig technique region
Material.Excavate region, then adopt paraffin particles material.
Table 1 model rock stratum materials proportioning and laying level
After the completion of analog material is prepared, according to actual formation sequence, test casing 2 base plate lays model, and with paving
If carrying out, successively install splicing before, the lucite strip-shaped baffle in left and right three faces, when coal seam analog material is laid, by electric heating
Net level is layed in coal seam, and every group of heating wire 10 is it should be noted that parallel to working face of coal seam.Note installing before splicing simultaneously
During baffle plate, coal output layer excavation simulation notch 9 is partly reserved in coal seam.
Step 2, model excavate
Push to adopt speed and time similarity ratio according to coal seam is actual, start each group electric heating in electric network using controller successively
Silk 10, the direction according to coal seam back production is heated to coal seam analog material, it is initially noted that opening successively according to working face extraction direction
Dynamic each group heating wire is heated, and pushes to adopt speed and time similarity ratio according to coal seam is actual, extrapolates model work surface each
Excavation drilling depth is 6cm, and the fusing radius of known every group of heating wire is the coal seam analog material of 1cm, then should start every timeGroup heating wire 10 heating melted paraffin granular materialss, coal seam analog material fusing produce liquid and steam by
On discharging tube 7, circular hole enters discharging tube 7, and then is discharged outside test casing 2 by discharging tube 7, and notes closing afterwards completely in fusing
Close corresponding heating wire.
Step 3, ct scanning
When simulation work surface pushes to adopt 150cm, determine that mobile to work surface overlying strata, deformation spatial shape is scanned,
According to three-dimensional reconstruction permissible accuracy, scale model is all separated 300 nodes in the longitudinal direction, and then utilize controller 8
Control return pulley 5 traction gantry 4, be scanned at each node, obtain multiple vertical cross section images of coal rock layer in model.
Step 4, three-dimensional reconstruction
By controlling the three-dimensional reconstruction software in data processing system, by multiple overlying strata forms in step 3 obtained
Profile image carries out feature point detection and mates, and calculates basis matrix, obtains three-dimensional point cloud atlas, finally gives work surface periphery
Overlying strata form 3-D image.By the 3-D view of overlying strata and crack, in conjunction with correlation theory, to the lane during seam mining
Road support process provides foundation, and can provide guidance to the preventing and treating of the mine disasters such as gas.
Claims (3)
1. a kind of ct scanning Equivalent Materials Testing platform it is characterised in that: include controlling data processing system, proof box
Body, scanning system, electric heating excavate system.
Described control data processing system controls the figure during ct scanning Equivalent Materials Testing by computer program
As scanning, meanwhile, data processing system is controlled to be formed by ct three-dimensional reconstruction and export stope overlying strata three dimensions shape
The image of state.
Described test casing is a cubic space, and four pillars are arranged at bottom, after be a metal baffle, front, left and right four sides is equal
It is spliced by screw for bar shaped organic glass baffle.
Described scanning system includes gantry and return pulley, and gantry is a square set, and front exists around test casing, its function
In realizing the coal and rock of test box house is scanned, obtain the vertical cross section image of coal and rock.Described return pulley is calculated
Machine controls, and installs gantry bottom, can slide, before and after driving gantry with this on the guide rail between pillar before and after test casing
Mobile, realize the scanning in various location, and then obtain the profile image of various location.
Described electric heating excavates system and includes controller, electric network, paraffin particles material, discharging tube.Described electric network is a plurality of flat
The heating wire of row, is layed in the plane domain that coal seam analog material excavates, and every group of heating wire all should be parallel to simulation work surface.
Form multigroup parallel loop, control each loop heating wire in electric network that paraffin particles material is heated using controller,
So that it is melted, thus simulate the excavation in coal seam.Described paraffin particles material composition be semi-refined paraffin wax, have fusing point low, nontoxic,
The property of heat meltable, for simulating coal seam material.Described discharging tube is two plastic straws, and its tube wall arranged is multiple
Circular hole.Discharging tube is layed in the plane domain two ends that coal seam analog material excavates respectively, and stays a termination in the external side of proof box.
In model digging process, the liquid producing after paraffin particles melt material can discharge test casing by discharging tube.
2. a kind of ct scanning Equivalent Materials Testing platform it is characterised in that: the operation of testing stand comprises the following steps:
Step 1, scale model make
According to the analog simulation theoretical formulation likelihood ratio, thus design the mechanics parameter of each coal rock layer, and carry out the similar material of coal and rock
The preparation of material, afterwards according to actual formation sequence, lays model on test box bottom, and carries out with laying, successively install
Before splicing, the organic glass baffle in left and right three faces, note simultaneously install splicing above baffle plate when, coal seam partly reserve produces coal
The notch of layer excavation simulation.Note when coal seam analog material is laid, the conventional analog material of no-dig technique region laying, excavation area
Electric network level, as coal seam simulation material, need to be layed in the paraffin particles excavating region laying by domain laying paraffin particles material
In material.If the heating fusing radius of every group of heating wire is r, then ensure that fusing fully and uniformly is entirely intended excavating
Region, the spacing of each heating wire should be 2r.
Step 2, model excavate
According to working face mining actual speed, in conjunction with the time similarity ratio in the theory of similarity, converse entering of each excavation of model
Chi m, then should start every timeGroup heating wire carries out heating and excavates, liquid and steam that analog material fusing in coal seam produces
Discharging tube is entered by the circular hole on discharging tube, and then it is external to discharge proof box by discharging tube.
Step 3, ct scanning
When working face of coal seam pushes to adopt to a certain position, in conjunction with the precision required by three-dimensional reconstruction, select some on guide rail
Individual position is as scanning element.Control return pulley traction gantry, in given location, scale model is scanned, obtains coal rock layer
Multiple vertical cross section images.
Step 4, three-dimensional reconstruction
By controlling the three-dimensional reconstruction software in data processing system, by multiple overlying strata form sections in step 3 obtained
Image carries out three-dimensional reconstruction, the overlying strata Form-space image of work surface periphery, so realize mobile to overlying strata and destroy comprehensive,
Deep analysis, provides for mine safety mining and instructs.
3. a kind of ct scanning Equivalent Materials Testing platform it is characterised in that: can realize thick in the way of being excavated using electrical heating
The simulation of coal seam separate zone production.Its method is as follows:
Step 1, layering laying electric network
In model process of deployment, coal seam part carries out layering laying, when laying each layering, electric network is embedded in this layering
Interior.
Step 2, successively heating are excavated
According to the actual mining sequence of each layering, start the electric network in each layering successively, each layering is heated, makes paraffin
Grain melt material, thus simulates thick seam slicing system.
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| CN201610940762.9A CN106353351B (en) | 2016-10-25 | 2016-10-25 | CT scan Equivalent Materials Testing platform |
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| CN201610940762.9A CN106353351B (en) | 2016-10-25 | 2016-10-25 | CT scan Equivalent Materials Testing platform |
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| CN106644891A (en) * | 2017-02-13 | 2017-05-10 | 辽宁工程技术大学 | Testing system for permeability characteristics of simulating relieved coal and rock mass under protective seam mining condition |
| CN107255704A (en) * | 2017-07-21 | 2017-10-17 | 石家庄铁道大学 | Rock slope with along layer near cut underground excavation model assay systems and test method |
| CN110297070A (en) * | 2019-06-27 | 2019-10-01 | 中国矿业大学 | A kind of three-dimensional solid-liquid coupling analog simulation system and method excavated for coal seam |
| CN113554930A (en) * | 2021-08-04 | 2021-10-26 | 成都理工大学 | Coal seam mining device and method in indoor physical simulation test |
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| CN106644891B (en) * | 2017-02-13 | 2019-05-21 | 辽宁工程技术大学 | A kind of Penetration Signature test macro for simulating protective coat extracted release coal and rock |
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| Publication number | Publication date |
|---|---|
| CN106353351B (en) | 2019-04-09 |
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