Device for preparing rock-like material capable of accurately adjusting crack position

Abstract

The utility model relates to the technical field of geotechnical engineering test equipment, in particular to a device for preparing a rock-like material capable of accurately adjusting crack positions, which comprises a base, a pouring box is arranged on the base, a mounting frame matched with the pouring box is arranged on the base, the mounting frame is connected with a crack template through a connecting structure, and the crack template is connected with the pouring box through the connecting structure. An inserting part is fixedly arranged at the lower end of the mounting frame, a sliding groove matched with the inserting part is formed in the base, and the inserting part is movably inserted into the sliding groove; the connecting structure comprises a through groove formed in the mounting frame, a connecting piece is arranged in the through groove in a sliding mode, the connecting piece is detachably connected with the crack template, the pouring box is arranged for pouring rock-like slurry, and the crack template is arranged for simulating cracks, so that samples can be re-engraved in batches, and the re-engraving efficiency is improved. Strength, deformation, failure modes and the like of sample rock masses of the same specification can be conveniently tested, and meanwhile machining difficulty is low.

Description

Technical Field

[0001] This utility model relates to the field of geotechnical engineering testing equipment, and in particular to a device for preparing rock-like structures with precisely adjustable crack locations. Background Technology

[0002] Rock-like material specimens are an important experimental tool for studying the mechanical properties of fractured rock masses, and are widely used in mining, tunnel engineering, underground space development, and other fields. Rock masses in nature commonly possess defects such as joints and fractures, which significantly affect the strength, deformation, and failure modes of the rock mass. In the laboratory, standardized specimens with pre-fabricated fractures are prepared using artificial molds to simulate the mechanical behavior of real rock masses.

[0003] In geotechnical engineering testing, the preparation of fractured rock specimens is a core foundation for studying rock mass failure mechanisms and fracture propagation laws. However, traditional techniques are limited by fixed mold structures and extensive operating processes, facing multiple bottlenecks for a long time. Existing molds mostly rely on the use of natural rock for fabrication. For example, Chinese Patent Publication No. CN212206812U discloses a "Rock Specimen Fracture Preparation Device," which cuts natural rock to a size that matches the receiving groove, places it in the receiving groove, and then fastens the rock specimen to a fixing block with bolts. By drilling a hole in the rock specimen through a cutting groove with a drilling tool, and then passing a saw wire through the drilled hole, the rock specimen is cut along the cutting groove, thereby preparing fractures.

[0004] However, in actual use, the shape and specifications of cracks are random and cannot be replicated during the cutting and processing of natural rocks. This makes it difficult to test the strength, deformation and failure mode of the rock mass in actual tests. Furthermore, processing natural rocks is prone to producing defective products, and the processing is difficult and inefficient. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies, such as the random shape and specifications of natural rock fissures, the inability to replicate them, the easy generation of defective products, the high processing difficulty, and the low efficiency. This invention proposes a rock-like device for preparing fissures with precise adjustable positions.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] Design a rock-like device for preparing rock with precisely adjustable crack positions, including a base, a casting box on the base, an mounting frame on the base that cooperates with the casting box, a crack template connected to the mounting frame through a connecting structure, an insertion part fixedly provided at the lower end of the mounting frame, and a sliding groove on the base that cooperates with the insertion part, the insertion part being movably inserted into the sliding groove;

[0008] The connection structure includes a through groove formed on the mounting frame, and a connector is slidably disposed in the through groove. The connector is detachably connected to the crack template.

[0009] Furthermore, the mounting frame includes a support column and a crossbeam, the through slot is formed on the crossbeam, and the plug-in part is fixedly mounted on the support column.

[0010] Furthermore, a gasket is fixedly installed on the support column, and a bolt is provided on the crossbeam. The bolt passes through the crossbeam and is threadedly connected to the gasket.

[0011] Furthermore, a movable groove is provided at the lower end of the crossbeam, and a slider that cooperates with the movable groove is fixedly provided on the crack template, and the connecting piece is threadedly connected to the slider.

[0012] Furthermore, the casting box includes a fixed baffle and a movable baffle. The fixed baffle is fastened to the base, and the movable baffle has connecting parts on both sides. The fixed baffle has grooves corresponding to the connecting parts.

[0013] Furthermore, each of the fixed baffles is fixedly provided with a connecting plate, and the connecting plate has a through hole, into which a fixing member that is threadedly connected to the base is inserted.

[0014] The present invention proposes a rock-like device for preparing cracks with precise adjustment, the advantages of which are:

[0015] In this invention, a casting box is set up for casting rock slurry, and a crack template is set up to simulate cracks, so that samples can be batch replicated, which is convenient for testing the strength, deformation and failure mode of rock masses of the same specification. At the same time, the processing difficulty is low and the output is high.

[0016] Secondly, in this invention, the position of the fracture template is controlled by the mounting frame and connecting structure, thereby controlling the position of crack generation in the rock-like sample. The fracture template is replaceable, supporting the rapid construction of complex fracture networks such as single fractures, double fractures, and cross fractures. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of a rock-like device for preparing a crack position that can be precisely adjusted, as proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the fixed baffle of this utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the support column of this utility model;

[0020] Figure 4This is a schematic diagram of the structure of the crossbeam of this utility model.

[0021] In the diagram: 1. Base; 2. Casting box; 21. Fixed baffle; 22. Movable baffle; 23. Connecting part; 24. Connecting plate; 25. Fastener; 3. Mounting frame; 31. Support column; 32. Crossbeam; 33. Gasket; 34. Moving groove; 4. Connecting structure; 41. Through groove; 42. Connector; 5. Crack template. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0023] Reference Figure 1-4 A device for preparing rock-like materials with precisely adjustable crack positions includes a base 1, a casting box 2 on the base 1, an mounting frame 3 on the base 1 that cooperates with the casting box 2, a crack template 5 connected to the mounting frame 3 via a connecting structure 4, an insertion part fixedly provided at the lower end of the mounting frame 3, a sliding groove on the base 1 that cooperates with the insertion part, the insertion part being movably inserted into the sliding groove; and a fixing groove on the base 1 that cooperates with the casting box.

[0024] The connecting structure 4 includes a through groove 41 opened on the mounting frame 3, and a connector 42 is slidably disposed in the through groove 41. The connector 42 is detachably connected to the crack template 5.

[0025] In this invention, a casting box 2 is filled with slurry for casting rock, and a fracture template 5 is set to simulate fractures, so that samples can be batch replicated, which is convenient for testing the strength, deformation and failure mode of rock masses of the same specification. At the same time, the processing difficulty is low and the output is high. In some embodiments, the base 1 is provided with a base scale to compare the position of the mounting frame 3 and reduce the error of manual operation. The mounting frame 3 is provided with a scale that matches the fracture template 5 to accurately control the horizontal offset of the fracture template 5 in the sample.

[0026] Furthermore, in this embodiment, the mounting frame 3 includes a support column 31 and a crossbeam 32. A through groove 41 is formed on the crossbeam 32, and a plug-in part is fixedly set on the support column 31. The plug-in part has a dovetail structure, and a polyurethane damping layer is bonded to the outer wall of the plug-in part to ensure self-locking fixation in the groove.

[0027] Furthermore, in this embodiment, a gasket 33 is fixedly installed on the support column 31, and a bolt is provided on the crossbeam 32. The bolt passes through the crossbeam 32 and is threadedly connected to the gasket 33. The crossbeam 32 can be disassembled to facilitate the removal of the processed rock-like material.

[0028] It should be noted that, in this embodiment, a movable groove 34 is provided at the lower end of the crossbeam 32, and a slider that cooperates with the movable groove 34 is fixedly provided on the crack template 5. The connector 42 is threadedly connected to the slider. The size of the movable groove 34 matches the slider on the crack template 5. After the slider is embedded in the movable groove 34, the connector 42 is screwed into the slider through the through groove of the crossbeam 32 and threadedly connected to it. At this time, the crack template 5 and the crossbeam 32 remain perpendicular. Finally, the two sides of the crossbeam 32 are aligned with the washers 33, and the bolts pass through the crossbeam 32 and are threadedly connected to the washers 33.

[0029] Furthermore, in this embodiment, the casting box 2 includes a fixed baffle 21 and a movable baffle 22. The fixed baffle 21 is fastened to the base 1. Both sides of the movable baffle 22 are provided with connecting parts 23. The fixed baffle 21 is provided with grooves corresponding to the connecting parts 23. After the rock-like material is cast, the movable baffle 22 can be removed to take out the rock-like material.

[0030] More specifically, in this embodiment, each of the fixed baffles 21 is fixedly provided with a connecting plate 24. The connecting plate 24 has a through hole, and a fixing member 25 that is threadedly connected to the base 1 is inserted into the through hole. The fixing member 25 is a self-locking screw. The fixing member 25 tightly connects the connecting plate 24 and the fixed baffles 21 to the base 1 to prevent loosening and falling off, and at the same time prevents slurry leakage.

[0031] Working method: During operation, the connecting plate 24 of the fixed baffle 21 is aligned with the base 1 and placed vertically. The fixing member 25 passes through the reserved screw hole of the connecting plate 24 and is threaded to the base 1. At this time, the fixed baffle 21 and the base 1 are in a 90° perpendicular relationship. Then, the connecting part 23 of the movable baffle 22 is aligned with the groove of the fixed baffle 21 and slowly inserted in the vertical direction until the bottom of the movable baffle 22 contacts the base 1. The insertion part at the bottom of the support column 31 is aligned with the slide groove of the base 1 and slid along the slide groove to the designated position. After the slider is embedded in the moving groove 34, the connecting member 42 is screwed into the slider through the through groove of the crossbeam 32 and threaded to it. At this time, the crack template 5 and the crossbeam 32 remain perpendicular. Finally, the two sides of the crossbeam 32 are aligned with the shims 33, and the bolts pass through the crossbeam 32 and are threaded to the shims 33. At this time, the crack template 5 and the crossbeam 32 remain perpendicular.

[0032] During pouring, the grout fills the pouring box 2 and wraps the crack template 5. After initial setting, the self-locking fastener 25 is removed, and the crossbeam 32 is removed and moved upward to pull out the crack template 5, thus forming a standard crack at a preset position inside the sample.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for preparing rock-like structures with precisely adjustable crack locations, comprising a base (1), characterized in that, A casting box (2) is provided on the base (1), and an installation frame (3) that cooperates with the casting box (2) is provided on the base (1). The installation frame (3) is connected to a crack template (5) through a connecting structure (4). A plug-in part is fixedly provided at the lower end of the installation frame (3). A sliding groove that cooperates with the plug-in part is opened on the base (1). The plug-in part is movably plugged into the sliding groove. The connection structure (4) includes a through groove (41) opened on the mounting frame (3), and a connector (42) is slidably disposed in the through groove (41). The connector (42) is detachably connected to the crack template (5).

2. The device for preparing a rock-like structure with precisely adjustable crack location according to claim 1, characterized in that: The mounting bracket (3) includes a support column (31) and a crossbeam (32). The through groove (41) is opened on the crossbeam (32), and the plug is fixedly installed on the support column (31).

3. The device for preparing a rock-like structure with precisely adjustable crack location according to claim 2, characterized in that: A gasket (33) is fixedly installed on the support column (31), and a bolt is provided on the crossbeam (32). The bolt passes through the crossbeam (32) and is threadedly connected to the gasket (33).

4. The device for preparing a rock-like structure with precisely adjustable crack location according to claim 2, characterized in that: The lower end of the crossbeam (32) is provided with a moving groove (34), and a slider that cooperates with the moving groove (34) is fixedly provided on the crack template (5). The connector (42) is threadedly connected to the slider.

5. The device for preparing a rock-like structure with precisely adjustable crack location according to claim 1, characterized in that: The casting box (2) includes a fixed baffle (21) and a movable baffle (22). The fixed baffle (21) is fastened to the base (1). The movable baffle (22) has connecting parts (23) on both sides. The fixed baffle (21) has a groove corresponding to the connecting part (23).

6. The device for preparing a rock-like structure with precisely adjustable crack location according to claim 5, characterized in that: Each of the fixed baffles (21) is fixedly provided with a connecting plate (24), and the connecting plate (24) is provided with a through hole, and a fixing member (25) that is threadedly connected to the base (1) is inserted into the through hole.

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