CN221199166U - Spliced true triaxial sample preparation die - Google Patents
Spliced true triaxial sample preparation die Download PDFInfo
- Publication number
- CN221199166U CN221199166U CN202323143326.3U CN202323143326U CN221199166U CN 221199166 U CN221199166 U CN 221199166U CN 202323143326 U CN202323143326 U CN 202323143326U CN 221199166 U CN221199166 U CN 221199166U
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- coaming
- sample preparation
- true triaxial
- frames
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- 238000002360 preparation method Methods 0.000 title claims abstract description 25
- 238000004088 simulation Methods 0.000 claims abstract description 28
- 239000011148 porous material Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 abstract description 9
- 208000010392 Bone Fractures Diseases 0.000 description 21
- 206010017076 Fracture Diseases 0.000 description 21
- 239000011435 rock Substances 0.000 description 13
- 239000011521 glass Substances 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 229910001369 Brass Inorganic materials 0.000 description 3
- 239000010951 brass Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 208000006670 Multiple fractures Diseases 0.000 description 1
- 244000137852 Petrea volubilis Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model belongs to the technical field of model tests, and discloses a spliced true triaxial sample preparation die which specifically comprises a plurality of coaming frames, a plurality of crack simulation devices and a bottom plate; the coaming frames are laminated and detachably connected along the height direction to form a square column type sleeve; the plurality of crack simulation devices penetrate through the wall of the square column type sleeve; the bottom plate is detachably connected with the bottom end of the square column sleeve. The utility model adopts the spliced multi-layer coaming frame to replace the traditional die coaming, the volume is smaller, when samples with different fracture parameters are prepared, the sample preparation die only needs to replace the coaming frame with the preset fracture position, and a corresponding fracture simulation device is arranged on the coaming frame, so that the die with different fracture parameters can be prepared, and the preparation of the samples with different fracture parameters is completed.
Description
Technical Field
The utility model discloses a spliced true triaxial sample preparation die, and belongs to the technical field of model tests.
Background
The development of scientific researches on the mechanical properties and deformation damage processes of fractured rock mass has very important engineering significance. Because the original state fractured rock mass sample has larger discreteness, the larger deviation of the test result is easy to cause, and unified recognition is difficult to form, the fractured rock mass sample is usually prepared manually by adopting rock-like and mould.
The true triaxial test reflects the difference between small principal stress and medium principal stress more truly, and gradually replaces the conventional triaxial test to become a main means of the fractured rock mass test. In the true triaxial fractured rock mass test, the inclination angle, the length and the like of the fractured rock mass influence the mechanical property and the deformation damage process. Thus, preparing fractured rock mass having multiple fracture parameters is an important basis for true triaxial fractured rock mass testing.
At present, a fractured rock mass with various fracture parameters is prepared, and one mold is generally adopted for each fracture parameter, so that more molds are required to be processed. And too many dies result in higher experimental costs and too many dies occupy larger laboratory space resources.
Disclosure of utility model
The utility model overcomes the defects of the prior art and provides a spliced true triaxial sample preparation die which comprises a plurality of coaming frames, a plurality of crack simulation devices and a bottom plate;
The coaming frames are stacked and detachably connected along the height direction to form a square column type sleeve;
the plurality of fracture simulation devices penetrate through the wall of the Fang Zhuxing sleeve;
The bottom plate is detachably connected with the bottom end of the square column type sleeve.
Preferably, the bottom plate is provided with a groove matched with the square column sleeve;
The bottom end of Fang Zhuxing sleeve is inserted in the groove.
Preferably, each coaming frame comprises four end-to-end connection plates.
Preferably, the connection plates are divided into a first connection plate and a second connection plate;
the first connecting plate is adjacently connected with the second connecting plate;
The adjacent first connecting plate and the second connecting plate are connected in a plugging manner.
Preferably, the device further comprises a plurality of limit posts;
The limiting columns penetrate through the connecting plate in the height direction of the coaming frames and are used for connecting the coaming frames distributed in a laminated mode.
Preferably, the bottom plate is provided with a counter bore matched with the limit column;
the limiting columns penetrate through the multiple layers of connecting plates and are inserted into the counter bores.
Preferably, the number of the limit posts is four;
The four limit posts are respectively positioned at four vertex angles of the coaming frames.
Preferably, the first or second opposite connection plates are provided with pores with preset parameters, and the crack simulation device passes through the first or second opposite connection plates through the pores.
Preferably, the fracture simulator is made of a metal sheet.
The beneficial effects are that: the utility model adopts the spliced multi-layer coaming frame to replace the traditional die coaming, the volume is smaller, when samples with different fracture parameters are prepared, the sample preparation die only needs to replace the coaming frame with the preset fracture position, and a corresponding fracture simulation device is arranged on the coaming frame, so that the die with different fracture parameters can be prepared, and the preparation of the samples with different fracture parameters is completed.
Drawings
FIG. 1 is a schematic diagram showing the effects of a mold in an embodiment of the present utility model;
FIG. 2 is a schematic diagram showing the effect of a base plate according to an embodiment of the present utility model;
FIG. 3 is a schematic diagram illustrating the effect of a first connection board according to an embodiment of the present utility model;
FIG. 4 is a schematic diagram illustrating the effect of a second connecting plate according to an embodiment of the present utility model;
FIG. 5 is a top view of a base plate according to an embodiment of the present utility model;
FIG. 6 is a top view of a first connector plate according to an embodiment of the utility model;
FIG. 7 is a top view of a second web in an embodiment of the utility model;
FIG. 8 is a schematic view of a splice tray and a stopper column;
FIG. 9 is a schematic view of a splice of a base plate to a first connection plate of a bottom layer;
fig. 10 is a schematic diagram of the splicing of the bottom plate with the first and second bottom connection plates.
In the figure: 1. a bottom plate; 2. a bottom layer first connection plate; 3. a first connection plate; 4. a bottom layer second connecting plate; 5. a second connecting plate; 6. a fracture simulation device; 7. a limit column; 8. countersink; 9. a groove.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth such as the particular system architecture, techniques, etc., in order to provide a thorough understanding of the embodiments of the present utility model. It will be apparent, however, to one skilled in the art that the present utility model may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems and devices are omitted so as not to obscure the description of the present utility model with unnecessary detail.
The preferred technical scheme of the utility model is further described below with reference to the accompanying drawings and examples.
A spliced true triaxial sample preparation mould comprises a plurality of coaming frames, a plurality of crack simulation devices 6 and a bottom plate 1; the coaming frames are laminated and detachably connected along the height direction to form a square column type sleeve; a plurality of crack simulation devices 6 penetrate through the wall of the square column type sleeve; the bottom plate 1 is detachably connected with the bottom end of the square column sleeve.
Specifically, as shown in fig. 1, the spliced true triaxial sample preparation mold comprises a plurality of coaming frames, wherein the coaming frames are distributed in multiple layers, the coaming frames on the adjacent layers are detachably connected, and the coaming frames on the adjacent layers can be connected through buckles, hinges, detachable mortise-tenon joints or pins. The multi-layer coaming frame forms a square column type sleeve, one end of the sleeve is used as the bottom end and is detachably connected with the bottom plate 1 to form a square cavity, and the square cavity is a molding cavity of the true triaxial sample preparation mold. Wherein, the bottom plate 1 and the square column type sleeve can be connected by means of plugging, bonding, buckling connection and the like. The wall of the sleeve is penetrated with a plurality of fracture simulation devices 6, and the setting positions, the number, the roughness and other parameters of the fracture simulation devices 6 are determined according to the parameters of the prefabricated fracture rock mass. A plurality of crack simulation devices 6 penetrate through the wall of the sleeve, wherein one end of each crack simulation device 6 penetrates through the wall of the square column-shaped sleeve and stretches into a preset position in the square cavity; or the crack simulation device 6 penetrates through the opposite cylinder walls of the square cylinder type sleeve, so that two ends of the crack simulation device 6 correspondingly penetrate through the two opposite cylinder walls of the square cylinder type sleeve, and the middle part of the crack simulation device 6 is positioned in the square containing cavity.
Compared with a mould directly formed by four coamings, the multi-layer coaming frame has smaller volume, when rock mass cracks with different parameters are arranged, only the coamings at preset crack positions are required to be replaced, and the corresponding crack simulation devices 6 are arranged on the coamings, so that more moulds do not need to be processed, only the coamings with cracks corresponding to the multiple crack simulation devices 6 are required to be manufactured, and the coamings with the crack simulation devices 6 are combined into sample preparation moulds with various parameters through the different coamings.
Further, a groove 9 matched with the square column sleeve is formed in the bottom plate 1; the bottom end of the Fang Zhuxing sleeve is inserted into the groove 9.
Specifically, as shown in fig. 2, in this embodiment, the square column sleeve is connected with the bottom plate 1 by a plugging manner, and a groove 9 matched with the bottom end of the square column sleeve is provided on one side surface of the bottom plate 1, so that the bottom end of the square column sleeve is plugged into the groove 9. Forming a square cavity with the bottom plate 1. The connector is connected in an inserting mode, and has the advantages of good quality, good sealing performance, higher strength and higher shock resistance.
Further, each coaming frame comprises four connecting plates connected end to end.
Specifically, each coaming frame comprises four end-to-end connecting plates, so that the cost is further saved, the space waste of a laboratory is reduced, each coaming frame consists of four end-to-end connecting plates, and when sample preparation molds with different parameters are manufactured, only the corresponding connecting plates need to be replaced. So that a plurality of connecting plates with different openings are prepared; the mould for prefabricating various fracture parameters in a combined way can be realized by adopting different connecting plates and fracture simulation devices 6.
Further, the connection plates are divided into a first connection plate 3 and a second connection plate 5; the first connecting plate 3 is adjacently connected with the second connecting plate 5; adjacent first connecting plates 3 and second connecting plates 5 are connected in a plug-in manner.
Specifically, in this embodiment, the connection board is divided into two first connection boards 3 and two second connection boards 5, the first connection boards 3 are connected with the second connection boards 5, as shown in fig. 3 and 4, the two ends of the first connection boards 3 are provided with first grooves, the two ends of the second connection boards 5 are provided with protrusions matched with the first grooves, and the first grooves and the protrusions all extend along the height direction of the connection board.
Further, the device also comprises a plurality of limit posts 7; the limiting posts 7 penetrate through the connecting plate along the height direction of the coaming frames and are used for connecting the coaming frames distributed in a laminated mode.
Specifically, multilayer bounding wall frame passes through spacing post 7 pin joint, along the direction of height of bounding wall frame, sets up a plurality of through-holes in the connecting plate of bounding wall frame, and the through-hole is located the optional position of bounding wall frame, and a plurality of through-holes on every layer of bounding wall frame all are located the same position, and multilayer bounding wall frame stromatolite distributes, through the pin joint of a plurality of spacing posts 7. Specifically, the plurality of shorter limiting posts 7 are only connected with two adjacent layers of coaming frames in a pin joint mode, or one long limiting post 7 penetrates through the multiple layers of coaming frames. The number and the length of the limiting posts 7 are determined according to the pin joint mode and the number of through holes, and the limiting posts at least comprise two limiting posts. The limit posts 7 are adopted for pin joint of the multi-layer coaming frame, so that the operation is convenient, and the connection is stable. Specifically, in this embodiment, the long limiting post 7 is selected to be connected by pin through the multi-layer coaming frame.
Further, a counter bore 8 matched with the limit column 7 is formed in the bottom plate 1; the limiting columns 7 penetrate through multiple layers of connecting plates and are inserted into the counter bores 8.
Specifically, in order to further ensure the connection stability of the square column type sleeve and the bottom plate 1, as shown in fig. 2, a counter bore 8 matched with the limit column 7 is arranged at a preset position of the bottom plate 1, and the limit column 7 is inserted into the counter bore 8 through the multi-layer coaming frame, so that the Fang Zhuxing sleeve is connected with the bottom plate 1 more firmly.
Further, the number of the limiting columns 7 is four; the four limit posts 7 are respectively positioned at four vertex angles of the coaming frames.
Further, in this embodiment, the number of the limiting posts 7 is four, and the length of the limiting posts is the sum of the height of the multi-layer coaming frame and the height of the counter bore 8. Four spacing posts 7 are located four apex angles departments of bounding wall frame, are convenient for connect.
Further, the first or second opposite connection plates 3 or 5 are provided with pores with preset parameters, and the crack simulator 6 passes through the first or second opposite connection plates 3 or 5 through the pores.
Specifically, the side walls of the coaming frame, namely the first connecting plate 3 and the second connecting plate 5, are provided with holes, parameters of the holes are consistent with those of the crack simulation devices 6 corresponding to the crack parameters of the sample to be prefabricated, and the crack simulation devices 6 penetrate through the two opposite first connecting plates 3 or the two opposite second connecting plates 5.
Further, the crack simulator 6 is made of a metal sheet.
Specifically, in this embodiment, the material of the connecting plate and the limiting post 7 is organic glass, the material of the crack simulator 6 is a metal sheet, and in this embodiment, the crack simulator 6 is a brass sheet.
The following is a specific description of specific parameters and sample preparation processes of the sample preparation mold according to an embodiment of the present utility model.
Firstly, as shown in fig. 2 and 5, the organic glass with the height of 10mm and the length and width of 120mm is selected, and a groove 9 with the depth of 5mm, the length of 15mm and the width of 10mm is formed at the position 20mm away from the first side edge and 25mm away from the second side edge of the organic glass, so that the coaming frame is convenient to insert. The center of the groove 9 forms a 50-50 platform, and four counter bores 8 with the diameter of 2mm and the depth of 5mm are formed at the positions 5mm away from the outer edges of the four vertex angles of the groove 9, so that the limit post 7 is convenient to insert.
As shown in fig. 6, an organic glass with a length of 70mm, a height of 20mm and a thickness of 15mm is selected as the first connecting plate 3, first grooves with a side length of 4mm x 4mm and a height of 20mm are formed at 3mm positions at two ends of the first connecting plate 3, and through holes with a diameter of 2mm are formed at positions 5mm away from the outer side in the thickness direction of the first connecting plate 3 along the height direction of the first connecting plate 3. In this embodiment, 10 first connection plates 3 are fabricated, wherein the height of the bottom first connection plate 2 is 25mm, and the height of the corresponding first groove disposed thereon is 25mm.
As shown in fig. 7, an organic glass with a length of 58mm, a height of 25mm and a thickness of 10mm is selected as the second connecting plate 5, and protrusions with a side length of 4mm x 4mm and a height of 20mm are arranged at positions 3mm away from two sides of the second connecting plate 5. In this embodiment, 10 second connection plates 5 are fabricated, where the height of the bottom layer second connection plate 4 is 25mm, and correspondingly, the height of the protrusions disposed thereon is 25mm.
The opposite first connecting plate 3 or the opposite second connecting plate 5 is provided with opposite holes, so that the crack simulation device 6 can be inserted in the later stage; the form, angle and extensibility of the pores are determined according to the prepared fractured rock mass.
Four cylindrical organic glass rods with the diameter of 2mm and the height of 110mm are manufactured. Brass sheet was selected as the fracture simulator 6.
When preparing a sample, the bottom plate 1 is arranged on a horizontal surface, one side surface of the bottom plate provided with the groove 9 faces upwards, four limit posts 7 are respectively inserted into counter bores 8 as shown in fig. 8, then through holes of the bottommost first connecting plate 2 are aligned with the limit posts 7 and inserted into the groove 9 on the bottom plate 1, and the crack simulation device 6 is inserted into the bottom first connecting plate 2 as shown in fig. 9. The protrusions of the bottom layer second connection plates 4 are then aligned with the first grooves of the bottom layer first connection plates 2 and inserted into the grooves 9 of the bottom plate 1. The installation of the lowest coaming frame is completed, and as shown in fig. 10, the splicing of the multiple coaming frames is completed in sequence in the manner described above.
After the die is installed, pouring prefabricated cement mortar material into the die, vibrating to ensure compactness, and placing the vibrated compact sample and the die into a standard curing box for curing. Taking out the sample after curing for 2 hours together with the die, extracting the pre-buried brass sheet, and continuing curing for 3 days. After curing for 3 days, the mold was removed in the reverse order of the installation order from top to bottom, and demolding was completed. The samples were placed in a standard curing box for 28 days.
And finally, taking out the sample after maintenance, polishing the upper and lower surfaces of the sample by a polisher, and polishing the peripheral side surfaces of the sample by sand paper to overflow slurry, thereby ensuring the surface smoothness of the sample. And after the sample is manufactured, mounting the manufactured sample on a rock true triaxial tester, and performing true triaxial test.
The utility model adopts the spliced multi-layer coaming frame to replace the traditional die coaming, the volume is smaller, when samples with different fracture parameters are prepared, the sample preparation die only needs to replace the coaming frame with the preset fracture position, and a corresponding fracture simulation device is arranged on the coaming frame, so that the die with different fracture parameters can be prepared, and the preparation of the samples with different fracture parameters is completed.
While the application has been described in terms of preferred embodiments, it will be understood by those skilled in the art that various changes and modifications can be made without departing from the scope of the application, and it is intended that the application is not limited to the specific embodiments disclosed.
Claims (9)
1. The spliced true triaxial sample preparation die is characterized by comprising a plurality of coaming frames, a plurality of crack simulation devices and a bottom plate;
The coaming frames are stacked and detachably connected along the height direction to form a square column type sleeve;
the plurality of fracture simulation devices penetrate through the wall of the Fang Zhuxing sleeve;
The bottom plate is detachably connected with the bottom end of the square column type sleeve.
2. The spliced true triaxial sample preparation die according to claim 1, wherein the bottom plate is provided with a groove matched with the square column sleeve;
The bottom end of Fang Zhuxing sleeve is inserted in the groove.
3. The true triaxial sample die of claim 1, wherein each of the bounding wall frames includes four end-to-end connection plates.
4. The true triaxial sample die of claim 3, wherein the web is divided into a first web and a second web;
the first connecting plate is adjacently connected with the second connecting plate;
The adjacent first connecting plate and the second connecting plate are connected in a plugging manner.
5. The split true triaxial sample preparation die according to claim 3, further comprising a plurality of limit posts;
The limiting columns penetrate through the connecting plate in the height direction of the coaming frames and are used for connecting the coaming frames distributed in a laminated mode.
6. The spliced true triaxial sample preparation die according to claim 5, wherein a counter bore matched with the limit column is formed in the bottom plate;
the limiting columns penetrate through the multiple layers of connecting plates and are inserted into the counter bores.
7. The spliced true triaxial sample preparation die according to claim 6, wherein the number of limit posts is four;
The four limit posts are respectively positioned at four vertex angles of the coaming frames.
8. The true triaxial sample preparation die according to claim 4, wherein the first or second opposite connection plates are provided with pores of preset parameters, and the crack simulator passes through the first or second opposite connection plates via the pores.
9. The true triaxial sample preparation die of claim 1, wherein the fracture simulator is made of sheet metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323143326.3U CN221199166U (en) | 2023-11-21 | 2023-11-21 | Spliced true triaxial sample preparation die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323143326.3U CN221199166U (en) | 2023-11-21 | 2023-11-21 | Spliced true triaxial sample preparation die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221199166U true CN221199166U (en) | 2024-06-21 |
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ID=91493256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323143326.3U Active CN221199166U (en) | 2023-11-21 | 2023-11-21 | Spliced true triaxial sample preparation die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221199166U (en) |
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2023
- 2023-11-21 CN CN202323143326.3U patent/CN221199166U/en active Active
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