CN112683622A - Physical simulation system for prefabricating rock mass with different strike fracture surfaces - Google Patents
Physical simulation system for prefabricating rock mass with different strike fracture surfaces Download PDFInfo
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- CN112683622A CN112683622A CN202011590338.9A CN202011590338A CN112683622A CN 112683622 A CN112683622 A CN 112683622A CN 202011590338 A CN202011590338 A CN 202011590338A CN 112683622 A CN112683622 A CN 112683622A
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- 239000011435 rock Substances 0.000 title claims abstract description 42
- 238000004088 simulation Methods 0.000 title claims abstract description 32
- 238000012360 testing method Methods 0.000 claims abstract description 24
- 238000003825 pressing Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 12
- 238000005056 compaction Methods 0.000 claims description 7
- 239000002689 soil Substances 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000005464 sample preparation method Methods 0.000 claims 1
- 230000035515 penetration Effects 0.000 abstract 1
- 208000010392 Bone Fractures Diseases 0.000 description 19
- 206010017076 Fracture Diseases 0.000 description 19
- 230000008569 process Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 238000003475 lamination Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000005034 decoration Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Abstract
The utility model provides a prefabricated physical simulation system who contains different trend crack face rock mass belongs to rock mass physical simulation's technical field, includes: a rock physical simulation sample preparation device and a sample crack surface angle adjusting device. The test sample adjusts the trend and the depth of the test sample crack surface through the test sample crack surface angle adjusting device, a test sample template is established through a mold box in the rock physical simulation test sample preparing device, and the test sample is compacted through the force transmission of a pressing plate, so that the physical simulation test samples of the rock mass with the crack surfaces in different trends are obtained. The simulation crack surface is fixed well in advance through adjustable crack trend panel, for the prefabricated simulation rock mass sample that contains arbitrary trend and different penetration degree crack surfaces in batches raises the efficiency.
Description
Technical Field
The application relates to the technical field of rock mass physical simulation, in particular to a physical simulation system for prefabricating a rock mass with different strike fracture surfaces.
Background
The magnitude and direction of the ground stress in the rock mass are important for the deformation and stability of rock mass engineering, so that the research on the ground stress field in a complex geological environment is more and more important. The engineering rock mass is composed of rock blocks and structural planes, under the action of early-stage tectonic stress, fracture development in the rock mass is complicated, the integrity of the rock mass is damaged, and a fracture local stress field can change along with the change of the tectonic stress field (loading stress field), but the specific space-time change rule is unknown, and particularly when two fractured rock masses generate creep deformation, the research result of the space-time change characteristic of the local stress field is less.
At present, scholars at home and abroad adopt methods of numerical simulation, physical simulation and field measurement for the research of the problem, wherein the physical simulation is favored by researchers as an analysis method for systematically simulating the field engineering geological characteristics in a laboratory environment. And carrying out a loading test on rock-like samples containing different fracture lengths and fracture inclination angles by means of a rock mechanics test system in a test room, and analyzing a stress field and a fracture evolution rule of the rock-like samples. Sample preparation is a relatively cumbersome and indispensable step for such tests. At present, the angle and depth of prefabrication of a crack surface in a rock body can not be systematically adjusted, and the pressurizing mode of a sample is only vertical compaction of a sheet surface. This application provides a rock mass physical simulation device to the shortcoming of current mode, and the major rock mass sample that breaks of systematization preparation realizes mainly breaking to move towards controllable be used for solving the loaded technical problem of system appearance loaded down with trivial details, structural plane according to the design scheme in the current rock mass physical simulation.
Disclosure of Invention
The embodiment of the application provides a prefabricated physical simulation system who contains different trend crack face rock mass, includes: a rock physical simulation sample preparation device and a sample crack surface angle adjusting device;
rock mass physical simulation sample preparation device includes: the device comprises a fixed plate (1), a bottom plate (2), a mold box (3) and a force transmission frame (13);
the fixing plate (1) is arranged at the bottom of the rock physical simulation sample preparation device, and a central clamping groove and an edge clamping groove are formed in one surface, facing the rock physical simulation sample preparation device, of the fixing plate (1); the bottom plate (2) is arranged in the central clamping groove, and an assembled die box (3) is arranged in the clamping groove at the upper part of the bottom plate (2); the four sides of the mould box (3) are provided with reserved mould box fixing holes (4) for installing and fixing the mould box (3); the force transmission frame (13) is assembled by two embedded pressure plates;
the sample crack surface angle adjusting device comprises: a crack surface support frame (5), a crack surface fixing plate (6), a crack surface fixing hole (7), a crack surface fixing joint (8), a crack surface angle adjusting plate (9), a crack panel (10), a lower press plate crack surface adjusting plate (11) and a lower press plate crack surface adjusting fixing plate (12);
the fracture surface support frame (5) is arranged in an edge clamping groove of the fixing plate (1), the fracture surface fixing holes (7) are arranged on the fracture surface angle adjusting plate (9), the fracture surface fixing joints (8) are two symmetrical parts and are fixed with the upper part of the fracture surface support frame (5) through threads, and the pressing plate fracture surface adjusting plate (11) is arranged in a central clamping groove of the fixing plate (1);
the crack panel (10) is used as a simulated crack trend depth and vertically penetrates through the crack surface angle adjusting plate (9) and the pressing plate crack surface adjusting plate (11), the crack surface angle adjusting plate (9) and the crack panel (10) are fixed through the crack surface fixing plate (6), the crack surface trend and the crack surface depth are adjusted, and the crack surface angle adjusting plate (9) is inserted into the crack surface fixing hole (7) through the crack surface fixing joint (8) and is matched and fixed; the lower pressure plate crack surface adjusting fixing plate (12) and the lower part of the cross rod of the crack surface support frame (5) are fixed in a threaded manner through a fixing shaft (14), and in order to save labor and check the state of a soil sample when the pressure plate is pressed up and down, the crack surface adjusting fixing plate (12) rotates around the fixing shaft (14) to be parallel to the upper part of the crack surface support frame (5) and is used for placing a raised force transfer frame (13);
optionally, the crack panel (10) is placed in the system, the height and the direction are adjusted through the crack surface angle adjusting plate (9), the crack surface angle adjusting plate (9) is locked by inserting the crack surface fixing joint (8) into the crack surface fixing hole (7) and locking the crack panel height through an external buckle in consideration of the fixing problem of the crack panel (10) after adjustment.
Optionally, comprising: respectively fixing the die box (3) and the bottom plate (2) in a central clamping groove and an edge clamping groove of the fixing plate (1);
the test materials are flatly laid on a sample box in layers according to the proportion, a lower pressing plate crack surface adjusting plate (12) is rotated around a fixed shaft (14) to be vertical to a crack surface supporting frame (5), a lower pressing plate crack surface adjusting plate (11) and a force transmission frame (13) are sequentially combined, placed on the upper part of the materials after being combined, and completely contacted and attached with the upper surface of the materials;
putting the whole experimental device into a press machine, and enabling the press machine to act on the upper part of a force transmission frame (13);
the dowel frame (13) compacts the test material in the sample box layer by layer under the action of the press;
the portion of the excess mold box is cut away after compaction is complete.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the utility model provides a prefabricated physical simulation system appearance device that contains different trend crack face rock mass which characterized in that: the bottom of the device is a fixed plate, the center of the fixed plate is provided with a through groove for clamping and placing a sample, and the two sides of the die box are provided with front and back through slide rails for clamping and placing the crack surface supporting rods, so that the parts are ensured to be in a horizontal state in the whole prefabricating process and the position of the prefabricated crack surface can be adjusted.
The side body of the die box is formed by splicing and combining four same right-angle side plates, a die box fixing hole is formed in the joint of each die box, corresponding screws are embedded into the die box fixing holes to fix the side body of the die box, so that the stability in the horizontal direction is ensured, the stability in the vertical direction of the die box during working is ensured due to the buckling of a bottom plate clamping groove, and the two structures are combined to ensure that the die box can resist the counter force released by a sample during compaction;
the whole rotary pressing plate structure consists of a crack surface supporting frame (5), a crack surface fixing plate (6), a crack surface angle adjusting plate (9) and a crack panel (10), wherein before a sample is prepared, the crack panel (10) is inserted into the crack surface fixing plate to reach a preset depth of a test, then is adjusted to a preset angle through the crack surface angle adjusting plate (9), and after the crack surface fixing joint (8) is well adjusted, the crack surface fixing joint is inserted into a crack surface fixing hole (7), so that the whole crack panel is ensured to be fixed, and the depth of the crack panel is fixed through a buckle;
as shown in figure 5, the pressing plate of the application consists of an upper part and a lower part, wherein the upper part is stressed by the pressing plate to bear the pressure of the press, and the lower part is stressed by the pressing plate to compact the sample through pressure transmission. In order to ensure that the trend of the crack panel (10) is adjustable, a lower pressure plate crack surface adjusting fixing plate (12) which can rotate along with the crack panel (10) is arranged in the middle of the spliced lower pressure plate, and the plate is in an inscribed rotating mode with an outer pressure plate, so that crack surfaces in different trends can be prefabricated, and a sample can be seamlessly compacted.
As shown in figure 6, the pressing plate is formed by splicing a force transmission frame (13) and a lower pressing plate crack surface adjusting plate (11), the lower pressing plate crack surface adjusting plate (11) can rotate after being spliced, the lower portion of a crack panel (10) is inserted into the center of the lower pressing plate crack surface adjusting plate (11), and the lower portion can rotate along with the crack panel (10) when the trend of the crack panel (10) is adjusted through a crack surface angle adjusting plate (9).
When a sample is prepared, force is applied to a force-bearing pressing plate on the top of a force transmission frame (13) and is transmitted to a lower pressing plate through the force transmission frame (13), so that pressure can be applied to sample materials in a mold box, and in the process of applying force to the sample in the mold box, in order to enable the sample to be compacted and solidified and to be closer to the properties of a simulated rock mass, soil needs to be repeatedly filled in the process of preparing the sample, and the sample is repeatedly compacted until the whole sample is compacted and solidified. The technical scheme includes that a pressure plate is lifted to the height between a crack surface fixing plate (6) and a lower pressure plate crack surface adjusting fixing plate (12), the lower pressure plate crack surface adjusting fixing plate (12) rotates around a fixing shaft (14) from a position vertical to a crack surface cross rod to a position parallel to the crack surface cross rod, as shown in figure 7, the lower portion of the pressure plate is placed at the position, a certain gap is reserved between the lower portion of the pressure plate and a lower die box, and therefore a sample can be conveniently checked and added.
The technical scheme provided by the application has the following beneficial effects:
the rock mass sample of the corresponding crack surface required by the simulation test can be obtained through the device, the operation of the sample preparation process is simple and quick, the rock and soil sample of the prefabricated crack surface with any trend and depth can be obtained, the feasibility is good, and the accuracy is higher.
Drawings
FIG. 1 is a schematic structural diagram of a rock physical simulation device provided by an embodiment of the application;
FIG. 2 is a front view of a rock physical simulation device provided by an embodiment of the application;
FIG. 3 is a plan view of a rock physical simulation device provided in the embodiment of the present application
FIG. 4 is a schematic view of a fixed fracture surface in an embodiment of the present application;
FIG. 5 is a schematic view of a platen in an embodiment of the present application;
FIG. 6 is an exploded view of a platen in an embodiment of the present application;
FIG. 7 is a diagram of an apparatus for viewing a sample in an embodiment of the present application;
fig. 8 is a schematic view of a base plate in an embodiment of the present application.
Structural description:
1-fixing the plate; 2-a bottom plate; 3-a mold box; 4-fixing holes of the mold box; 5-fracture surface support shelf; 6-fracture surface fixing plate; 7-fracture surface fixing holes; 8-fracture surface fixing joints; 9-a gap face angle adjusting plate; 10-fracture panel; 11-lower platen gap face conditioning plate; 12-adjusting and fixing the crack surface of the lower pressure plate; 13-a force-transmitting frame; 14-fixed axis.
Detailed Description
Reference will now be made in detail to the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar parts or parts having the same or similar functions throughout. In addition, if a detailed description of the known art is not necessary for illustrating the features of the present application, it is omitted. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present application and are not to be construed as limiting the present application.
It will be understood by those within the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. As used herein, the term "and/or" includes all or any element and all combinations of one or more of the associated listed items.
The following describes the technical solutions of the present application and how to solve the above technical problems with specific embodiments.
Firstly, a mould base plate (2) is fixed in a groove of a fixing plate (1), and four mould box splicing plates (3) are spliced and arranged on the mould base plate to form a mould box. And then, fixing two feet at the bottom of the crack surface support frame in the groove of the fixed frame (1), and aligning the crack surface fixing hole (7) to the center of the sample so as to facilitate the next step of work.
When a sample is prefabricated, after a crack surface support frame is fixed, the height of a crack panel (10) is adjusted according to a test scheme and the crack panel is fixed on a crack surface fixing plate (9), the crack surface fixing plate is rotated to adjust the trend of the crack panel, a crack surface fixing joint (8) is placed in a crack surface fixing hole (7) to fix the trend angle of the crack panel, and a lower pressure plate crack surface adjusting plate (12) penetrates through the crack panel and is placed on the lower pressure plate crack surface adjusting fixing plate (12).
The test materials are flatly paved on a sample box according to the proportion in layers, a lower pressure plate crack surface adjusting plate (12) is rotated around a symmetrical shaft (10), and a force transmission frame (13) and the lower pressure plate crack surface adjusting plate (11) are placed on the upper part of the materials after being spliced. The whole experimental device is placed in a press machine, and the press machine acts on the upper part of a force transmission frame (13) to compact. The process is repeated to compact layer by layer, the strain measuring device and the material are compacted together during the lamination pressing, and the scraping is carried out after each compaction to prevent the sample from generating a lamination surface due to the lamination pressing. And cutting off the part of the upper part exceeding the die box after the sample is pressed, and carrying out the next test after the maintenance is finished.
Those of skill in the art will appreciate that the various operations, methods, steps in the processes, acts, or solutions discussed in this application can be interchanged, modified, combined, or eliminated. Further, other steps, measures, or schemes in various operations, methods, or flows that have been discussed in this application can be alternated, altered, rearranged, broken down, combined, or deleted. Further, steps, measures, schemes in the prior art having various operations, methods, procedures disclosed in the present application may also be alternated, modified, rearranged, decomposed, combined, or deleted.
In the description of the present application, it is to be understood that the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
The terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for ease of description and simplicity of description only, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be considered limiting of the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The foregoing is only a partial embodiment of the present application, and it should be noted that, for those skilled in the art, several modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations should also be regarded as the protection scope of the present application.
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| CN202011590338.9A CN112683622B (en) | 2020-12-29 | 2020-12-29 | A physical simulation system for prefabricated rock mass with fracture surfaces of different orientations |
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| CN112683622B CN112683622B (en) | 2025-01-21 |
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Cited By (4)
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| CN113532995A (en) * | 2021-07-22 | 2021-10-22 | 吉林大学 | An adjustable rock-like material fracture prefabrication device |
| CN114428006A (en) * | 2021-12-31 | 2022-05-03 | 中国矿业大学 | A kind of weakly cemented rock sample preparation device and preparation method |
| CN115436181A (en) * | 2022-08-24 | 2022-12-06 | 防灾科技学院 | A Physical Simulation System for Evolution of Local Stress Field in Locked Strike-slip Fractures |
| CN117191532A (en) * | 2023-09-08 | 2023-12-08 | 广州市市政工程设计研究总院有限公司 | A device and method for preparing pile foundation karst roof fissure rock mass samples |
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| CN115436181A (en) * | 2022-08-24 | 2022-12-06 | 防灾科技学院 | A Physical Simulation System for Evolution of Local Stress Field in Locked Strike-slip Fractures |
| CN117191532A (en) * | 2023-09-08 | 2023-12-08 | 广州市市政工程设计研究总院有限公司 | A device and method for preparing pile foundation karst roof fissure rock mass samples |
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| CN112683622B (en) | 2025-01-21 |
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