CN207488050U - The preparation facilities of filler experiment of machanics standard specimen - Google Patents
The preparation facilities of filler experiment of machanics standard specimen Download PDFInfo
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- CN207488050U CN207488050U CN201721704875.5U CN201721704875U CN207488050U CN 207488050 U CN207488050 U CN 207488050U CN 201721704875 U CN201721704875 U CN 201721704875U CN 207488050 U CN207488050 U CN 207488050U
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- fastening
- machanics
- preparation facilities
- standard specimen
- filler
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Abstract
The utility model is related to a kind of filler experiment of machanics standard specimen preparation facilities.The device includes compacting cylinder, transmission rod and piston, and compacting cylinder includes cylinder ontology, outer part and pedestal, and cylinder ontology is made of two first half-shells, and outer part is by surrounding cylinder ontology so as to which two first half-shells are connected as an entirety.Preparation facilities in the utility model have many advantages, such as it is simple in structure, can bear bigger pressure, take out test specimen when do not destroy test specimen integrality.
Description
Technical field
The utility model is related to a kind of geotechnical engineering, mining engineering experimental provision, more particularly to a kind of filler mechanics
Experimental standard test material preparation device.
Background technology
In recent years, the environmental pollution and ecological disruption problem that coal mining is brought become increasingly conspicuous, and filling coal mining is as " green
One important composition technology of exploitation " is quickly applied and is developed.As a kind of emerging coal winning technology, filling coal mining
Strata Behaviors in Longwall Mining and overlying strata movement law become new research direction.The physico mechanical characteristic of formation rock for geotechnical engineering,
The research of mining engineering scientific research technical field provides basic data.In Rock Mechanics Test, by being drawn standard rock sample,
The tests such as press, cut obtain mechanics parameter needed for theoretical research and numerical simulation analysis.However it " is put as solid filling coal-mining technique
Change " theoretical and control overlying mining rock is mobile, earth's surface deformation important carrier, at present the tensile strength for solid filling material, interior rub
The mechanics parameters such as angle, cohesive strength and Poisson's ratio are wiped to be typically only capable to analyze acquisition by the mode of boring sample.But since solid fills
The intensity of filling chock material is low, bad adhesion, and there are the problem of the sampling of solid filling material is difficult, and standard specimen manufacture difficulty is big.
Also occur utilizing simple monoblock type cylinder steel cylinder and forcing press in the prior art (such as CN103940669A)
Simple pressure test is carried out to filler, obtains the technology of the stress-strain curves under its granular media state.But the technology
There are following defects：First, the technology be to the filler in cylindrical steel cylinder (without the test specimen after being compacted out of steel cylinder
Take out) it is compacted and passes through the front and rear volume change acquisition stress-strain curves of compacting, this method is not filled
The standard specimen of material, and then the mechanics such as tensile strength, internal friction angle, cohesive strength and Poisson's ratio that can not also measure filler
Parameter；Secondly as its cylindrical steel cylinder is monolithic construction, being subjected to for filler is close with steel cylinder inner wall after normal pressure
Contact causes test specimen needs to take out very difficult；Third, when obtaining filler experiment of machanics standard specimen, if necessary
Load larger normal pressure, above-mentioned cylinder steel cylinder since structure is single, can not bear larger normal pressure and by
In hoop tension caused by filler compression.
Utility model content
Utility model technical problem to be solved
The purpose of the utility model is to overcome shortcomings of the prior art, and providing one kind can coordinate existing MTS to test
The device that forcing press prepares filler experiment of machanics standard specimen.
Solution for solving technical problems
To achieve the above object, the utility model provides a kind of filler experiment of machanics standard specimen preparation facilities,
It is characterized in that：Including compacting cylinder, transmission rod and piston；The compacting cylinder includes cylinder ontology, outer part and pedestal；The cylinder ontology
It is made of two first half-shells；The outer part is by surrounding the cylinder ontology so as to which two first half-shells are connected as one
A entirety；The piston is arranged in the cylinder ontology；The lower end of the transmission rod is connect with the upper end of the piston；The cylinder
Ontology is connect with the pedestal.Due to the adoption of the above technical scheme, the utility model compared with the prior art, brings following technology
Effect：First, since cylinder ontology uses split structure, the manufacture of cylinder ontology is more various compared to monolithic construction
Change, such as：The various ways such as compression molding, pouring molding may be used；Second, since the intrinsic filler of cylinder is being compacted
Radial displacement can be generated in the process, this can cause filler to be in close contact with cylinder inner wall, therefore the cylinder ontology of monoblock type is inevitable
Test specimen can be caused to take out very difficult, and the utility model is then easy for take out what is prepared after using split structure
Sample；Third, for the test specimen prepared by filler, even across compacting step, the intensity of test specimen in itself is also very weak
, therefore, using the compacting cylinder of split structure, when test specimen takes out, external force can be reduced to the greatest extent and test specimen is moved
Force-disturbance, so as to which test specimen be prevented to be destroyed；4th, cylinder ontology of the prior art since outside is not provided with outer part,
In filler compacting process, hoop tension and normal pressure caused by being compacted are undertaken by cylinder ontology, when needing to prepare
During filler standard specimen under larger (such as 1500m) condition of formation pressure of buried depth, common compacting cylinder can not bear compared with
Big normal pressure and hoop tension；And the utility model is in cylinder outer body due to being provided with outer part, outer part can be
Hoop tension and normal pressure are largely shared, therefore the integral strength of compacting cylinder can be improved.
Further, the outer part is made of two the second half-shells；Each second half-shell includes a receiving portion and position
In the edge of a wing portion of described accommodation section both sides, described accommodation section is used to surround the first half-shell, the wing of two second half-shells
Edge is oppositely arranged and is mechanically connected, so as to which two first half-shells are connected into an entirety.Due to the setting in edge of a wing portion,
In filler compacting process, the major part for the hoop tension that cylinder ontology is subject to can be shifted out of cylinder ontology circumference range
On assembling bolt other than to circumference range, so as to further improve the stress performance of compacting cylinder.
Further, standard specimen is disturbed damage when preparing and completing and removed from experiment machine platform in order to prevent, from
And ensureing the integrality of removed sample to greatest extent, the pedestal in the utility model includes the upper disk of fastening, fastening lower wall；Institute
The upper lateral part for stating the upper disk of fastening is connect with the following side of the cylinder ontology；The following side of disk is with fastening the upper of lower wall in the fastening
Side connects.
Further, cyclic structure of the disk for central opening, the pedestal further include cushion cap, the cushion cap in the fastening
Following side be connected to the upper lateral part of the fastening lower wall, and in the cushion cap and the fastening following side of disk card slot card
It closes, so as to cover the central opening of disk in the fastening.By the setting of cushion cap, the fastening spiral shell that can will be fastened on upper disk
Lower part filler radial shear suffered by bolt is shifted to cylinder body upper part, so as to which the assembling bolt being changed into the portion of the edge of a wing is held
By, improve compacting cylinder integrated carrying ability.
Further, preparation facilities is placed on run-off the straight when on the testing machine of MTS pilot systems, Yi Ji in order to prevent
With testing machine surface stress concentration occurs for the bottom of fastening bolt in pressurized process, and the pedestal further includes bearing；The bearing
It is connect with the following side of the fastening lower wall.
Further, connect in a welding manner between the following side of the upper lateral part of disk and the cylinder ontology in the fastening
Connect and/or the fastening on disk be central opening cyclic structure, be made of symmetrical two semi-rings, each semi-ring point
It is not welded with the first half-shell of the cylinder ontology.
Further, the pedestal has perforative osculum.It, can be in order in compacting filling material by setting osculum
During material, the moisture inside filler is discharged from compacting cylinder.
Further, the transmission rod is hollow cylinder；The piston is equipped with the inner wall with the following side of the transmission rod
Matched flange.
Further, it is threadedly coupled between the flange of the piston and the inner wall of the following side of the transmission rod.
Further, the cylinder ontology and described accommodation section weld and/or the fastening on disk and the fastening lower wall it
Between be bolted.Wherein, cylinder ontology and receiving portion welding is set, cylinder ontology and outer part can be formed as one it is whole
Body is more advantageous to bearing normal pressure and radial pull.
Further, it is bolted between the edge of a wing portion being oppositely arranged of two second half-shells.
Further, the height of the pedestal is more than the height that the fastening bolt protrudes from the fastening lower wall following side
Degree.
Further, the filler experiment of machanics standard specimen preparation facilities and MTS rock mechanics testing systems and
Cutting machine is used cooperatively.
Advantageous effect：First, the filler experiment of machanics testing standard test material preparation device of the utility model passes through spy
Fixed structure is not only convenient for the taking-up of test specimen, and causes device that can bear larger hoop tension and normal pressure in itself；The
Two, the utility model only needs a small amount of sampling filler early period at the scene, when the later stage needing to test filler,
Without sub-sampling again, corresponding filler test specimen can be prepared directly in conjunction with the method in the utility model.
Description of the drawings：
Fig. 1 is the utility model filler experiment of machanics standard specimen preparation facilities structure diagram front view；
Fig. 2 is that the utility model filler experiment of machanics standard specimen preparation facilities compacting barrel structure schematic diagram is faced
Figure；
Fig. 3 is the compacting barrel structure schematic diagram side view of the utility model filler experiment of machanics standard specimen preparation facilities
Figure；
Fig. 4 is that the utility model filler experiment of machanics standard specimen preparation facilities compacting barrel structure schematic diagram is overlooked
Figure；
Fig. 5 is that the utility model filler experiment of machanics standard specimen preparation facilities dowel bar structure schematic diagram is faced
Figure；
Fig. 6 is the utility model filler experiment of machanics standard specimen preparation facilities piston structure schematic diagram front view；
In figure：1- transmission rods, 2- outer parts, 3- ontologies, 4- pistons, 5- assembling bolts, 6- cushion caps, disk in 7- fastenings,
8- bearings, 9- fastening lower walls, 10- fastening bolts.
Specific embodiment
Illustrate specific embodiment of the present utility model referring to the drawings.
As shown in Figs 1-4, the filler experiment of machanics standard specimen preparation facilities of the utility model includes compacting cylinder, passes
Power bar 1 and piston 4；The compacting cylinder includes cylinder ontology 3, outer part 2 and pedestal；The cylinder ontology 3 is by two first half-shell groups
Into；The outer part 2 is made of two the second half-shells；Each second half-shell includes a receiving portion and positioned at described accommodation section two
The edge of a wing portion of side, described accommodation section for surrounding the first half-shell, the edge of a wing portion of two second half-shells be oppositely arranged and
It is connected by assembling bolt 5, so as to which two first half-shells are connected into an entirety.Piston 4 is arranged on the cylinder ontology 3
Interior, the lower end of transmission rod 1 is connect with the upper end of piston 4.Above-mentioned filler experiment of machanics standard specimen preparation facilities and MTS rocks
Stone mechanical test system and cutting machine are used cooperatively.
By the split structure for being arranged to be made of two first half-shells by cylinder ontology 3, can taken out to avoid test specimen
It is compacted be destroyed by external force during cylinder.In addition, since the edge of a wing portion for the outer part 2 for being arranged on 3 outside of an ontology is relative to cylinder
Ontology 3 is radially protruding, therefore in filler compacting process, the big portion for the hoop tension that cylinder ontology 3 is subject to
Dividing can be transferred to out of cylinder ontology circumference range on the assembling bolt 5 other than circumference range, so as to further improve
It is compacted the stress performance of cylinder.
Standard specimen is preparing completion from the damage that is disturbed when machine platform is removed is tested in order to prevent, so as to greatest extent
Guarantee remove the integrality of sample, the filler experiment of machanics standard specimen preparation facilities of the utility model is additionally provided with
Pedestal, pedestal include the upper disk 7 of fastening, fastening lower wall 9；Disk 7 is the cyclic structure of central opening in the fastening, by symmetrical two
A semi-ring composition, each semi-ring weld respectively with the first half-shell of the cylinder ontology 3；Fastening lower wall 9 is solid disk knot
Structure；The following side of disk 7 is connect with fastening 9 upper lateral part of lower wall by fastening bolt 10 in the fastening.
Pedestal further includes cushion cap 6, and the following side of the cushion cap 6 is connected to the upper lateral part of the fastening lower wall 9, and described holds
Platform 6 engages with the card slot of the following side of disk 7 in the fastening, so as to cover the central opening of disk 7 in the fastening.Pass through cushion cap
Setting, can will fasten the lower part filler radial shear suffered by the fastening bolt 10 on upper disk 7 and turn to 3 top of cylinder ontology
It moves, the assembling bolt 5 so as to be changed into the portion of the edge of a wing is born, and improves compacting cylinder integrated carrying ability.
As shown in Figs. 1-3, fastening bolt 10 protrudes from the lower surface of fastening lower wall 9, and preparation facilities is placed in order to prevent
Run-off the straight and the bottom of fastening bolt 10 and testing machine surface in pressurized process when on the testing machine of MTS pilot systems
Stress concentration occurs, the utility model is additionally provided with bearing 8, the following side of the bearing 8 and the fastening lower wall 9 on pedestal
Connection, the height of pedestal are more than the height that fastening bolt protrudes from 9 lower surface of fastening lower wall.
Cushion cap 6, bearing 8 and fastening lower wall 9 on pedestal have perforative osculum, so as in compacting filler process
In, the moisture inside filler is discharged from compacting cylinder.
Cylinder ontology 3 is welded with receiving portion, so as to which cylinder ontology and outer part are formed as an entirety, is conducive to be compacted cylinder more
Bear normal pressure and radial pull well.
As seen in figs. 5-6, the transmission rod 1 of the utility model is hollow cylinder；Piston 4 is equipped with the following side with transmission rod 1
The matched flange of inner wall, be connected through a screw thread between the flange of piston 4 and the inner wall of the following side of transmission rod 1.
Cylinder ontology 3 is hollow cylinder structure, wall thickness 8-12mm, internal diameter 50mm is preferably 10mm.
In order to obtain the experiment of machanics testing standard test specimen close with live filler mechanical property, the utility model is also
A kind of method that filler standard specimen is prepared according to above-mentioned preparation facilities is disclosed, and main production method and step are such as
Under：
Step (1) prepares similar filler according to similar filler cementitious matter content curve：It is complete to choose filling coal mining
Finish stabilization time up to 1 year or more, and filler is identical, five filling coal mining working faces of buried depth difference more than 50m are as sample
This, by carrying out experiment of machanics to filling layer coring, obtains corresponding buried depth filler induration mechanics parameters, and will
It is as reference standard；
The filler of selection is classified with multistage standard sandstone sieve, obtains former size grading, and according to former grain size
Grading preparation experiment filler aggregate, the cementing material that addition accounts for gross mass different weight percentage make one group of similar filling material
Material, and different buried depth mining strata pressure in sample for reference is simulated using filler experiment of machanics standard specimen preparation facilities,
24 hours obtained standard specimens of rheology；
Experiment of machanics is carried out to standard specimen obtained and obtains corresponding mechanics parameters, and with corresponding buried depth filler
The mechanics parameters of induration are compareed, and the cementing material that determining to make standard specimen under the conditions of different buried depth should choose contains
Amount；
Similar filler cementitious matter content equation under depth is adopted, and rendering equation is bent according to more than fitting experimental data difference
Line, in this, as filler experiment of machanics standard specimen material mixture ratio foundation；
Bring the coal working face geological conditions for intending charge stratifying exploitation into cementitious matter content equation, and make according to proportioning
Similar filler.
The specific geological conditions pressure that step (2) is simulated using filler experiment of machanics standard specimen preparation facilities in MTS
Rheology 24 hours under power, and similar filler is compressed into the cylinder test block consistent with standard specimen diameter：By filling material
Expect that experiment of machanics testing standard test material preparation device inner wall applies separation layer, and similar filler is poured into compacting cylinder, height
200mm or so；Piston 4 is kept flat into compacting cylinder, and be put into transmission rod 1 with pull rod；Filler, piston 4 will be carried and passed
The compacting cylinder of power bar 1 is placed on the testing machine of MTS rock mechanics testing systems, is set and tested according to the mining geological conditions of simulation
Pressure rheology is compacted for 24 hours, and the pressure of MTS testing machines on filler, makes via transmission rod and piston conduction
Formation and the cylinder of the diameter 50mm under live stope environment condition of similarity；
MTS testing machine tests terminate, and compaction apparatus is removed, and transmission rod 1 and piston 4 are taken out, and lay down on compacting cylinder
Bolt, dismounting compacting cylinder and takes out cylinder test block.
Step (3) forms standard specimen using machine cuts：Cylinder test block cutting is fabricated to high 100mm with cutting machine
Filler mechanical test standard specimen.
Although the utility model is illustrated with reference to illustrative embodiments, but it is to be understood that the utility model is not
It is limited to disclosed illustrative embodiments.The range of claims should meet broadest explanation, to include all this
A little modifications, equivalent structure and function.
Claims (12)
1. a kind of filler experiment of machanics standard specimen preparation facilities, it is characterised in that：Including compacting cylinder, transmission rod (1) and
Piston (4)；The compacting cylinder includes cylinder ontology (3), outer part (2) and pedestal；The cylinder ontology (3) is by two first half-shell groups
Into；The outer part (2) is by surrounding the cylinder ontology (3) so as to which two first half-shells are connected as an entirety；Institute
Piston (4) is stated to be arranged in the cylinder ontology (3)；The transmission rod (1) connect with the piston (4)；The cylinder ontology (3) with
The pedestal connection.
2. filler experiment of machanics standard specimen preparation facilities according to claim 1, it is characterised in that：The periphery
Portion (2) is made of two the second half-shells；Each second half-shell includes a receiving portion and positioned at the edge of a wing of described accommodation section both sides
Portion, for surrounding the first half-shell, the edge of a wing portion of two second half-shells is oppositely arranged and is mechanically connected for described accommodation section,
So as to which two first half-shells are connected into an entirety.
3. filler experiment of machanics standard specimen preparation facilities according to claim 2, it is characterised in that：The pedestal
Including fastening upper disk (7), fastening lower wall (9)；The upper lateral part of disk (7) and the following side of the cylinder ontology (3) connect in the fastening
It connects；The following side of disk (7) is connect with the upper lateral part of fastening lower wall (9) in the fastening.
4. filler experiment of machanics standard specimen preparation facilities according to claim 3, it is characterised in that：The fastening
Upper disk (7) is the cyclic structure of central opening, and the pedestal further includes cushion cap (6), and the following side of the cushion cap (6) is connected to institute
The upper lateral part of fastening lower wall (9) is stated, and the cushion cap (6) engages with the card slot of the following side of disk (7) in the fastening, so as to cover
Cover the central opening of disk (7) in the fastening.
5. filler experiment of machanics standard specimen preparation facilities according to claim 3, it is characterised in that：The pedestal
Further include bearing (8)；The bearing (8) connect with the following side of the fastening lower wall (9).
6. filler experiment of machanics standard specimen preparation facilities according to claim 3, it is characterised in that：The fastening
Connect in a welding manner between the upper lateral part of upper disk (7) and the following side of the cylinder ontology (3) and/or
Disk (7) is the cyclic structure of central opening in the fastening, is made of symmetrical two semi-rings, each semi-ring difference
It is welded with the first half-shell of the cylinder ontology (3).
7. filler experiment of machanics standard specimen preparation facilities according to claim 1, it is characterised in that：The pedestal
With perforative osculum.
8. filler experiment of machanics standard specimen preparation facilities according to any one of claim 1 to 7, feature exist
In：The transmission rod (1) is hollow cylinder；The inner wall of the piston (4) equipped with the following side with the transmission rod (1) matches
Flange.
9. filler experiment of machanics standard specimen preparation facilities according to claim 8, it is characterised in that：The piston
(4) it is threadedly coupled between the flange and the inner wall of the following side of the transmission rod (1).
10. filler experiment of machanics standard specimen preparation facilities according to claim 5, which is characterized in that the cylinder
Ontology (3) between disk (7) and the fastening lower wall (9) in described accommodation section welding and/or the fastening with passing through fastening bolt
(10) it connects.
11. filler experiment of machanics standard specimen preparation facilities according to claim 2, which is characterized in that two institutes
It states and is connected by assembling bolt (5) between the edge of a wing portion being oppositely arranged of the second half-shell.
12. filler experiment of machanics standard specimen preparation facilities according to claim 10, the height of the bearing (8)
More than the height that the fastening bolt (10) protrudes from described fastening lower wall (9) following side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721704875.5U CN207488050U (en) | 2017-12-08 | 2017-12-08 | The preparation facilities of filler experiment of machanics standard specimen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721704875.5U CN207488050U (en) | 2017-12-08 | 2017-12-08 | The preparation facilities of filler experiment of machanics standard specimen |
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| Publication Number | Publication Date |
|---|---|
| CN207488050U true CN207488050U (en) | 2018-06-12 |
Family
ID=62458056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721704875.5U Expired - Fee Related CN207488050U (en) | 2017-12-08 | 2017-12-08 | The preparation facilities of filler experiment of machanics standard specimen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207488050U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917836A (en) * | 2017-12-08 | 2018-04-17 | 河南理工大学 | The preparation facilities of filler experiment of machanics standard specimen and the method that standard specimen is made using the device |
| CN113776914A (en) * | 2021-09-24 | 2021-12-10 | 广西大学 | Integrated manufacturing device and manufacturing method for structural surface upper and lower disc test piece in stress environment |
-
2017
- 2017-12-08 CN CN201721704875.5U patent/CN207488050U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107917836A (en) * | 2017-12-08 | 2018-04-17 | 河南理工大学 | The preparation facilities of filler experiment of machanics standard specimen and the method that standard specimen is made using the device |
| CN113776914A (en) * | 2021-09-24 | 2021-12-10 | 广西大学 | Integrated manufacturing device and manufacturing method for structural surface upper and lower disc test piece in stress environment |
| CN113776914B (en) * | 2021-09-24 | 2023-09-08 | 广西大学 | Device and method for integrally manufacturing upper and lower test pieces of structural surface in stress environment |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180612 Termination date: 20191208 |