CN217765711U - Many fractures of geomechanics model simulate fritter material suppression device - Google Patents
Many fractures of geomechanics model simulate fritter material suppression device Download PDFInfo
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- CN217765711U CN217765711U CN202221401626.XU CN202221401626U CN217765711U CN 217765711 U CN217765711 U CN 217765711U CN 202221401626 U CN202221401626 U CN 202221401626U CN 217765711 U CN217765711 U CN 217765711U
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Abstract
The utility model discloses a many cracks of geomechanical model simulate fritter material suppression device, comprises a workbench, molding press and fixed steel mould, fixed steel mould runs through along the direction of height and has seted up the rectangle and put the die cavity, the rectangle is put the die cavity and is provided with the mould subassembly, the mould subassembly can remove along the direction of height of fixed steel mould, the mould subassembly includes four removable steel sheets of group, four removable steel sheets of group are around forming the moulding-die space in proper order, the molding press is located the top of mould subassembly, detachable installs the pressure head on the head of pushing down of molding press, the shape of pressure head and the shape phase-match in moulding-die space. The mould components with different shapes and the pressing heads matched with the mould components are replaced, so that the small blocks with different inclination angles are pressed, the small blocks with different specifications are constructed into the rock mass sample in a staggered joint mode, the space complex intersection jointed rock mass with non-orthogonality and different communication rates is simulated, and the physical and mechanical properties of the model assembly constructed by the small blocks and the prototype rock mass are kept similar.
Description
Technical Field
The utility model relates to a geomechanical simulation test field specifically is a many cracks of geomechanical model simulation fritter material suppression device.
Background
With the vigorous development of water energy resources in China, more and more hydraulic buildings are built on foundations with complex geological conditions. Such as surrounding rocks of hydraulic tunnels, resisting bodies of abutment dams of arch dams, bedrocks of gravity dams, rocky high slopes and other rock masses, complex geological structures such as broken interlayers, altered zones, joint cracks and the like often exist. Rock mass in nature, particularly the foundation of earth surface engineering structures, is often fractured into discrete rock masses of varying sizes and different behaviors. The mechanical properties of these natural rock masses are largely controlled by the surface of geological structures such as broken layers, altered zones, joint fractures, etc., and therefore these complex geological structures must be simulated in order to analyze the stability of these hydraulic structures. However, in the geomechanical model test, the simulation of the rock mass is relatively complex, and whether the mechanical conditions of the rock mass, including complex geological structures such as a rock mass interrupted interlayer, an altered zone, a joint crack and the like and physical and mechanical parameters thereof, can be simulated more truly relates to the reliability of the test result. Therefore, in the current geomechanical model test, for the structural surface of the fault of IV level and above, the spatial position is simulated through the trend, the inclination angle and the like of the structural surface, the geometric dimension of the structural surface is simulated through a filling method through special structural surface materials (such as temperature-changing similar materials and dehydrated gypsum), and then the shear strength of the structural surface is simulated by combining kraft paper, electro-optic paper, polyethylene, polytetrafluoroethylene and other films; for a group of joint cracks below the IV level, the deformation characteristics of the rock mass are simulated by the blocks through a small block masonry technology, the small blocks are formed by pressing through a pressing device in the small block masonry technology, staggered joint masonry or low-strength bonding among the small blocks is used for simulating the connectivity of the joint cracks and the strength characteristics of the cracked rock mass, and therefore the stress deformation characteristics of the model are close to the deformation characteristics of the actual rock mass, and a plurality of main joint crack groups can be simulated. However, the current pressing device has the following disadvantages: in the prior art, the pressing device is generally used for pressing rock mass model materials in a small block body pressing type, the rock mass model materials are basically cubic small blocks and can be simulated into orthogonal joint crack groups, but the simulation cannot be carried out on non-orthogonal joints.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's is not enough, a many cracks of geomechanical model simulate fritter material suppression device is provided, change the mould subassembly of different shapes and change assorted pressure head with it, thereby suppress the fritter at different inclinations, build into rock mass sample with the fritter staggered joint of specification again, simulate non-orthogonality, the space complex joint rock mass of different connectivity, make the model assembly that the fritter was built by laying bricks or stones keep similar with the physical and mechanical properties of prototype rock mass, thereby indirect credibility that has improved the test result.
The purpose of the utility model is realized through the following technical scheme: the utility model provides a many cracks of geomechanical model simulate fritter material suppression device, includes workstation, molding press and fixed steel mould, fixed steel mould fixed connection be in on the workstation, fixed steel mould runs through along the direction of height and has seted up the rectangle and put the die cavity, the rectangle is put and is provided with the mould subassembly in the die cavity, the mould subassembly can be along the direction of height of fixed steel mould removes, the mould subassembly includes four removable steel sheets of group, four groups removable steel sheet centers on forming the moulding press space in proper order, the molding press is located the top of mould subassembly, the pressure head is installed to detachable on the lower press head of molding press, the moulding press space is located on the removal route of pressure head, the shape of pressure head with the shape phase-match in moulding press space.
Furthermore, the workbench is provided with a through hole communicated with the rectangular die placing groove, a rectangular frame is arranged below the fixed steel die and can move along the height direction of the workbench, and the four groups of detachable steel plates are respectively arranged on four edges of the top of the rectangular frame.
Furthermore, a bottom plate is fixed at the bottom of the rectangular frame and connected with a hydraulic cylinder, and a cylinder body of the hydraulic cylinder is installed on a cross beam of the workbench.
Furthermore, the bottom of the detachable steel plate is provided with a first special-shaped groove, the top of the rectangular frame is fixed with a first special-shaped rod, the shape of the first special-shaped rod is matched with that of the first special-shaped groove, and the first special-shaped rod is matched in the first special-shaped groove in a unique corresponding relation.
Further, the top of pressure head is fixed with the cylindricality seat, second dysmorphism groove has been seted up on the cylindricality seat, the lower press head of mold press is connected with the cylindricality pole, the bottom of cylindricality pole is fixed with second dysmorphism pole, the shape of second dysmorphism pole with the shape phase-match in second dysmorphism groove, second dysmorphism pole is in with only corresponding relation adaptation the second dysmorphism inslot.
Further, the outer wall of cylindricality pole and the outer wall of cylindricality seat all are equipped with the external screw thread, threaded connection has fixed cover on the cylindricality pole, fixed cover is connected simultaneously on cylindricality pole and the cylindricality seat.
Further, the fixed steel die is fixedly connected to the workbench through bolts.
The utility model has the advantages that:
1. a device for pressing a multi-crack simulation small block material of a geomechanical model is characterized in that mould assemblies in different shapes are replaced, a pressing head matched with the mould assemblies is replaced, so that small blocks with different inclination angles are pressed, small block staggered joints with different specifications are built into a rock mass sample, and a non-orthogonal space complex intersection jointed rock mass with different communication rates is simulated, so that a model combination body built by the small blocks is similar to the physical and mechanical properties of a prototype rock mass, and the reliability of a test result is indirectly improved.
2. Make the condition that the installation error can not appear when changing removable steel sheet through the adaptation in first dysmorphism pole and first dysmorphism groove, make simultaneously through the adaptation in second dysmorphism pole and second dysmorphism groove to make the pressure head change and can not appear the installation deviation to guarantee that the pressure head can not produce with removable steel sheet and interfere when the suppression, make pressure head and removable steel sheet not receive the damage at the in-process of suppression.
Drawings
Fig. 1 is a schematic view of the internal structure of a geomechanical model multi-fracture simulation small block material pressing device of the present invention;
FIG. 2 is a first shape of a mold assembly in a geomechanical model multi-fracture simulation billet compaction device of the present invention;
FIG. 3 is a second shape of a geomechanical model multi-fracture simulation die assembly in a compact material compaction device of the present invention;
FIG. 4 is a third shape of a geomechanical model multi-fracture simulation die assembly in a compact material compaction device of the present invention;
FIG. 5 is an enlarged view taken at A in FIG. 1;
in the figure, 1-workbench, 2-molding press, 3-fixed steel mold, 4-detachable steel plate, 5-molding press space, 6-pressure head, 7-rectangular frame, 8-bottom plate, 9-hydraulic cylinder, 10-first special-shaped groove, 11-first special-shaped rod, 12-cylindrical seat, 13-second special-shaped groove, 14-cylindrical rod, 15-second special-shaped rod and 16-fixed sleeve.
Detailed Description
The technical solutions of the present invention are further described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the following descriptions.
As shown in fig. 1 to 5, a multi-crack simulated small block material pressing device for a geomechanical model comprises a workbench 1, a pressing machine 2 and a fixed steel die 3, wherein the fixed steel die 3 is fixedly connected to the workbench 1, a rectangular die holding groove is formed in the fixed steel die 3 in a penetrating manner along the height direction, a die assembly is arranged in the rectangular die holding groove and can move along the height direction of the fixed steel die 3, the die assembly comprises four groups of detachable steel plates 4, the four groups of detachable steel plates 4 sequentially surround to form a pressing die space 5, the pressing machine 2 is positioned above the die assembly, a pressing head 6 is detachably mounted on a pressing head of the pressing machine 2, the pressing die space 5 is positioned on a moving path of the pressing head 6, and the shape of the pressing head 6 is matched with that of the pressing die space 5; changing mould components with different shapes and changing a pressure head 6 matched with the mould components to press small blocks with different inclination angles, building the small blocks with different specifications into rock mass samples by staggered joints, simulating non-orthogonal space complex intersection jointed rock masses with different communication rates, and keeping the physical and mechanical properties of model assemblies built by the small blocks similar to those of prototype rock masses, thereby indirectly improving the reliability of test results; in specific implementation, the pressing device is provided with a plurality of sets of die assemblies, die pressing spaces in different shapes are enclosed among four sets of detachable steel plates 4 of different die assemblies, meanwhile, the different die assemblies are matched with corresponding pressing heads 6, and the shapes of the pressing heads 6 are matched with the shapes of the die pressing spaces of the corresponding die assemblies, so that small pressing blocks in different shapes are pressed to adapt to the diversification of rock body shapes; for example, as shown in fig. 2, four detachable steel plates 4 in a rectangular or isosceles trapezoid shape surround a die space 5 in a rectangular shape, and at this time, a pressing head 6 in a rectangular shape is replaced, thereby pressing a small block in a rectangular shape; for another example, as shown in FIGS. 3 and 4, the removable steel plates 4 of different shapes are replaced to form a diamond-shaped die space 5 between the four sets of removable steel plates 4, and similarly, a ram 6 is replaced to press a small block having a shape corresponding to the die space 5. Therefore, the pressed shape of the small blocks is more diversified, the physical and mechanical properties of the model assembly built by the small blocks and the prototype rock body are kept similar, and the reliability of the test result is indirectly improved.
Further, as shown in fig. 1, a through hole communicated with the rectangular die placing groove is formed in the workbench 1, a rectangular frame 7 is arranged below the fixed steel die 3, the rectangular frame 7 can move along the height direction of the workbench 1, four groups of detachable steel plates 4 are respectively installed on four edges of the top of the rectangular frame 7, a bottom plate 8 is fixed at the bottom of the rectangular frame 7, the bottom plate 8 is connected with a hydraulic cylinder 9, a cylinder body of the hydraulic cylinder 9 is installed on a cross beam of the workbench 1, and the fixed steel die 3 is fixedly connected to the workbench 1 through bolts; the rectangular frame 7 is driven to ascend and descend by the hydraulic cylinder 9, so that the detachable steel plate 4 is convenient to mount and dismount; specifically, pneumatic cylinder 9 extension makes rectangular frame 7's top wear out from moulding-die space 5, thereby make rectangular frame 7's top expose, install removable steel sheet 4 this moment or change on rectangular frame 7, then pneumatic cylinder 9 shrink makes the mould subassembly adaptation that removable steel sheet 4 formed in fixed steel mould 3, when mould subassembly adaptation is to fixed steel mould 3 in, rectangular frame 7's bottom surface flushes with the upper surface of workstation 1, then pour the model material into in to moulding-die space 5, then moulding-die machine 2 drives pressure head 6 and pushes down and carries out press forming to the model material.
Further, as shown in fig. 5, the existing detachable mode is generally implemented in the field of dies and molding presses, and then the installation accuracy is poor in this mode, which is particularly shown in the following, the pressing head 6 and the detachable steel plate 4 need to be rotated for installation, and the installation in place is judged only by continuing to rotate the pressing head 6 and the detachable steel plate 4, however, the strength of different operators is inconsistent and different in perception, so that the judgment of the installation in place is inconsistent, the deviation which cannot be easily observed by naked eyes may occur, and the deviation occurs in the installation of the pressing head 6 or the detachable steel plate 4, so that the pressing head 6 can collide with the detachable steel plate 4 when pressed, and further the pressing head 6 and the detachable steel plate 4 are damaged, and the test is influenced, therefore, the detachable connection between the detachable steel plate 4 and the pressing head 6 is improved as follows: a first special-shaped groove 10 is formed in the bottom of the detachable steel plate 4, a first special-shaped rod 11 is fixed to the top of the rectangular frame 7, the shape of the first special-shaped rod 11 is matched with that of the first special-shaped groove 10, the first special-shaped rod 11 is matched in the first special-shaped groove 10 in a unique corresponding relation, a cylindrical seat 12 is fixed to the top of the pressure head 6, a second special-shaped groove 13 is formed in the cylindrical seat 12, a lower press head of the press molding machine 2 is connected with a cylindrical rod 14, a second special-shaped rod 15 is fixed to the bottom of the cylindrical rod 14, the shape of the second special-shaped rod 15 is matched with that of the second special-shaped groove 13, the second special-shaped rod 15 is matched in the second special-shaped groove 13 in the unique corresponding relation, external threads are formed in the outer wall of the cylindrical rod 14 and the outer wall of the cylindrical seat 12, a fixing sleeve 16 is in threaded connection with the cylindrical rod 14, and the fixing sleeve 16 is simultaneously connected to the cylindrical rod 14 and the cylindrical seat 12; the situation of installation errors can not occur when the detachable steel plate 4 is replaced through the matching of the first special-shaped rod 11 and the first special-shaped groove 10, and meanwhile, installation deviation can not occur when the pressure head 6 is replaced through the matching of the second special-shaped rod 11 and the second special-shaped groove 13, so that the pressure head 6 can not interfere with the detachable steel plate 4 during pressing, and the pressure head 6 and the detachable steel plate 4 are not damaged during pressing; preferably, the first and second profile grooves 10, 13 are not symmetrically shaped.
In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention; and those skilled in the art will appreciate that the benefits of the present invention are only to better benefit than the current embodiments of the prior art under certain circumstances, and not to the best use directly in the industry.
The foregoing is illustrative of the preferred embodiments of the present invention, and it is to be understood that the invention is not limited to the precise forms disclosed herein, and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the invention as defined by the appended claims. But that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. The utility model provides a many cracks of geomechanical model simulate fritter material suppression device, its characterized in that, includes workstation (1), molding press (2) and fixed steel mould (3), fixed steel mould (3) fixed connection be in on workstation (1), fixed steel mould (3) are run through along the direction of height and have been seted up the rectangle and have been put the die cavity, the rectangle is put the die inslot and is provided with the mould subassembly, the mould subassembly can along the direction of height of fixed steel mould (3) removes, the mould subassembly includes four removable steel sheet of group (4), four groups removable steel sheet (4) are around forming moulding-die space (5) in proper order, molding press (2) are located the top of mould subassembly, detachable installs pressure head (6) on the lower pressure aircraft nose of molding press (2), moulding-die space (5) are located on the moving path of pressure head (6), the shape of pressure head (6) with the shape phase-match of moulding-die space (5).
2. The pressing device for the multi-crack simulation small blocks of the geomechanical model according to claim 1, wherein a through hole communicated with the rectangular die holding groove is formed in the workbench (1), a rectangular frame (7) is arranged below the fixed steel die (3), the rectangular frame (7) can move along the height direction of the workbench (1), and four groups of the detachable steel plates (4) are respectively installed on four edges of the top of the rectangular frame (7).
3. The pressing device for the multi-crack simulation small blocks of the geomechanical model of claim 2, characterized in that a bottom plate (8) is fixed at the bottom of the rectangular frame (7), a hydraulic cylinder (9) is connected to the bottom plate (8), and a cylinder body of the hydraulic cylinder (9) is installed on a cross beam of the workbench (1).
4. A geomechanical model multi-fracture simulation small block material pressing device according to claim 3, characterized in that a first special-shaped groove (10) is formed in the bottom of the detachable steel plate (4), a first special-shaped rod (11) is fixed to the top of the rectangular frame (7), the shape of the first special-shaped rod (11) is matched with the shape of the first special-shaped groove (10), and the first special-shaped rod (11) is fitted in the first special-shaped groove (10) in a unique corresponding relationship.
5. A geomechanical model multi-fracture simulation small block material pressing device according to claim 1, characterized in that a cylindrical seat (12) is fixed to the top of the pressing head (6), a second special-shaped groove (13) is formed in the cylindrical seat (12), a cylindrical rod (14) is connected to a pressing head of the press (2), a second special-shaped rod (15) is fixed to the bottom of the cylindrical rod (14), the shape of the second special-shaped rod (15) matches the shape of the second special-shaped groove (13), and the second special-shaped rod (15) is fitted in the second special-shaped groove (13) in a unique corresponding relationship.
6. A geomechanical model multi-fracture simulation small block material pressing device according to claim 5, wherein the outer walls of the cylindrical rod (14) and the cylindrical seat (12) are provided with external threads, a fixing sleeve (16) is screwed on the cylindrical rod (14), and the fixing sleeve (16) is connected to the cylindrical rod (14) and the cylindrical seat (12) at the same time.
7. The multi-fracture simulation small block material pressing device for the geomechanical model of claim 1, wherein the fixed steel die (3) is fixedly connected to the workbench (1) by bolts.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221401626.XU CN217765711U (en) | 2022-06-06 | 2022-06-06 | Many fractures of geomechanics model simulate fritter material suppression device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221401626.XU CN217765711U (en) | 2022-06-06 | 2022-06-06 | Many fractures of geomechanics model simulate fritter material suppression device |
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| CN217765711U true CN217765711U (en) | 2022-11-08 |
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| CN202221401626.XU Active CN217765711U (en) | 2022-06-06 | 2022-06-06 | Many fractures of geomechanics model simulate fritter material suppression device |
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- 2022-06-06 CN CN202221401626.XU patent/CN217765711U/en active Active
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