Stress characteristic model test device

Abstract

The utility model discloses a stress characteristic model test device, which relates to the technical field of geotechnical engineering and comprises a detection assembly and a bottom plate, an injection molding part is movably arranged on the bottom plate, an injection molding model is arranged in the injection molding part, a pressure part is movably arranged on the injection molding model, an indwelling part is arranged in the injection molding part, and the indwelling part is connected with the pressure part. The injection molding part comprises first mold plates symmetrically arranged on the bottom plate. Through cooperative use of the pressure part, the injection molding part and the auxiliary part, the injection molding part can be separated from an injection molding model through assistance of the pressure part after the injection molding model is formed, so that the injection molding part can be disassembled more quickly, the time and steps for disassembling the injection molding part by workers are saved, the operation is more convenient, and the production efficiency is improved. And the stress characteristic model test efficiency of the anchor rod is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of geotechnical engineering, in particular to a stress characteristic model test device. Background Art

[0002] Underground powerhouses in water conservancy and hydropower projects typically use rock anchor beams to support overhead cranes. When the cranes lift the electromechanical equipment in the underground powerhouse, the rock anchor beams bear significant loads from the cranes. The rock anchor beams themselves are typically concrete structures. Unlike conventional concrete structures, they often lack columns. Instead, they are anchored to the surrounding rock platform using upper tension anchors and lower compression anchors. Current statistical data from monitoring rock anchor beams during construction and operation of numerous underground powerhouses indicates that the tension anchors in the rock anchor beams generally experience significant tensile stress. This is primarily due to the significant difference in deformation modulus between the concrete beam and the surrounding rock. The deformation modulus of the concrete beam is higher, while the deformation modulus of the surrounding rock is generally much lower than that of the concrete. After the pouring construction of the rock anchor beam of the underground powerhouse is completed, as the excavation of the underground powerhouse continues, the deformation of the surrounding rock around the rock anchor beam further increases, and the deformation of the surrounding rock will be converted into deformation pressure acting on the concrete beam body of the rock anchor beam; because the stiffness of the concrete beam body is generally much greater than that of the surrounding rock, the deformation pressure of the surrounding rock acting on the concrete will eventually be converted into a pulling force of the concrete beam body on the anchor rod of the rock anchor beam; and the other loads of the rock anchor beam borne by the anchor rod of the rock anchor beam itself are added, so that the stress of the anchor rod pulling on the upper part of the rock anchor beam is generally larger.

[0003] At present, engineering experience shows that after the construction of some underground powerhouses is completed, the stress of the rock anchor beams and anchor rods will exceed the limit. In addition, the stress characteristic model test device in the existing related technology is less economical and the load applied to the model is relatively simple. The injection molded template used for the stress characteristic model test needs to be manually separated from the model after injection molding, which requires the workers to consume huge effort and time, thereby delaying the stress characteristic model test of the anchor rod. For this purpose, a stress characteristic model test device is proposed. Utility Model Content

[0004] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In view of the above problems and / or the problems existing in the prior art, the present utility model is proposed.

[0006] Therefore, the present invention aims to solve the technical problems of the existing force characteristic model testing device, which is low in economic efficiency, applies a relatively simple load to the model, and cannot quickly separate the template from the injection molded model.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: a force characteristic model test device, including a detection component, including a base plate, an injection molded part is movably provided on the base plate, an injection molded model is provided in the injection molded part, a pressure part is movably provided on the injection molded model, a retention part is provided in the injection molded part, and auxiliary parts are symmetrically provided on the base plate.

[0008] As a preferred solution of the stress characteristic model test device of the utility model, wherein: the injection molded part includes a first template symmetrically arranged on the base plate, second templates are connected to both sides of the first template, and a spare template is movably arranged between the first template and the second template;

[0009] The first template and the second template are perpendicular to each other to form a rectangular parallelepiped structure, and an injection mold is cast between the first template and the second template.

[0010] As a preferred solution of the force characteristic model test device of the utility model, wherein: a groove is provided on one side of the first template, a protrusion is provided on the side of the second template close to the first template, a protrusion is provided on one side of the spare template, and a groove is provided on the other side of the spare template.

[0011] As a preferred solution of the stress characteristic model test device of the present invention, wherein: the first template and the second template are both provided with mounting holes, and the mounting holes pass through the first template and the second template;

[0012] A second magnet is provided on one side of the first template, the second template and the spare template.

[0013] As a preferred solution of the stress characteristic model test device of the present invention, a cylinder is movably inserted into the installation hole, grouting holes are symmetrically opened on the cylinder, and connecting pipes are movably connected to the grouting holes.

[0014] As a preferred solution of the stress characteristic model test device of the present invention, side plates are symmetrically welded to the top of the bottom plate, auxiliary plates are arranged on the outer sides of the tops of the side plates, and two auxiliary plates are provided, which are arranged opposite to each other.

[0015] As a preferred solution of the force characteristic model test device of the utility model, wherein: a top plate is movably provided on the two auxiliary plates, screws are symmetrically arranged in an array on the top plate, and limiting holes are arranged in an array on the two auxiliary plates, and the screws are threadedly connected to the limiting holes.

[0016] As a preferred solution of the force characteristic model test device of the present invention, wherein: the pressure member includes a mounting seat provided on the inner side of the side plate and the top plate, the mounting seats are arranged in an array, and a horizontal loading jack and a vertical loading jack are respectively provided on the mounting seats, and one end of the horizontal loading jack and the vertical loading jack are both provided with a pressure dividing plate, and the outer side of the pressure dividing plate is provided with a first magnet;

[0017] The horizontal loading jacks and the vertical loading jacks are both provided in four groups. The horizontal loading jacks are provided on the inner wall of the side plate, and the vertical loading jacks are provided on the inner wall of the top plate.

[0018] As a preferred solution of the force characteristic model test device of the present invention, the pressure member further includes through-hole jacks symmetrically arranged at both ends of the cylinder.

[0019] As a preferred solution of the force characteristic model test device of the utility model, the auxiliary part includes a first demagnetization plate symmetrically arranged on the side plate, a second demagnetization plate symmetrically arranged on the bottom plate, and the horizontal loading jack is arranged between the first demagnetization plate and the second demagnetization plate.

[0020] The beneficial effects of the present invention are as follows: through the coordinated use of the pressure piece, the injection molded part and the auxiliary part, the injection molded part can be separated from the injection molded model with the assistance of the pressure piece after the injection molded model is formed, so that the injection molded part can be disassembled more quickly, saving the time and steps of the staff in disassembling the injection molded part, making the operation more convenient, and improving the efficiency of the anchor rod force characteristic model test. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work. Among them:

[0022] Figure 1 This is a schematic diagram of the overall structure of the force characteristic model test device according to the embodiment of the present invention;

[0023] Figure 2A schematic diagram of the partial structure of the force characteristic model test device according to an embodiment of the present invention;

[0024] Figure 3 A schematic structural diagram of an injection molded part in a force characteristics model test device according to an embodiment of the present invention;

[0025] Figure 4 A schematic structural diagram of a retaining member in a force characteristic model test device according to an embodiment of the present invention;

[0026] Figure 5 This is a structural schematic diagram of the pressure piece in the force characteristic model test device described in the embodiment of the present utility model. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0029] Next, the present invention is described in detail with reference to schematic diagrams. For ease of illustration, cross-sectional views of device structures may be partially enlarged and not to scale when describing embodiments of the present invention. Furthermore, the schematic diagrams are merely illustrative and should not limit the scope of protection of the present invention. Furthermore, in actual production, three-dimensional dimensions, including length, width, and depth, should be included.

[0030] Furthermore, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it designate a separate or selective embodiment that is mutually exclusive with other embodiments.

[0031] Example 1

[0032] Reference Figure 1-3 , this embodiment provides a force characteristic model test device.

[0033] The stress characteristic model test device includes a detection component 100 .

[0034] Specifically, the detection component 100 includes a base plate 101. The base plate 101 is provided to facilitate the placement of the injection molded part 107. The base plate 101 is provided with an injection molded part 107. The injection molded part 107 is provided to facilitate better molding of the injection molded model 105. The injection molded part 107 is provided with an injection molded model 105. The setting of the injection molded model 105 can effectively simulate the prestressed influence of the rock anchor beam and the anchor rod under actual conditions, thereby improving the accuracy of the test results of the force characteristic model test device. A pressure piece 106 is movably provided on 105. Through the setting of the pressure piece 106, the change of the stress wrapping effect on the anchor rod along the depth of the rock layer can be simulated, which can effectively solve the problem of a relatively single load applied to the model in the prior art. A retention piece 108 is provided in the injection molded part 107. Through the setting of the retention piece 108, the injection molded part 107 can be better installed on the base plate 101. Auxiliary parts 109 are symmetrically provided on the base plate 101. Through the setting of the auxiliary part 109, the injection molded part 107 can be effectively separated from the pressure piece 106.

[0035] Preferably, the injection molded part 107 includes a first template 107a symmetrically arranged on the base plate 101, with second templates 107b connected to both sides of the first template 107a, and a spare template 107c movably arranged between the first template 107a and the second template 107b. By setting the spare template 107c, the length of the injection molded part 107 can be timely adjusted according to the length of the anchor rod, so that the injection molded part 107 can adapt to anchor rods of different lengths, and has a wider applicability;

[0036] It is worth noting that the first template 107a and the second template 107b are arranged vertically to form a rectangular parallelepiped structure, which facilitates pouring the injection mold 105 between the first template 107a and the second template 107b, so that the injection mold 105 can be smoothly shaped.

[0037] Furthermore, a groove is provided on one side of the first template 107a, a protrusion is provided on the side of the second template 107b close to the first template 107a, a protrusion is provided on one side of the spare template 107c, and a groove is provided on the other side of the spare template 107c. Through the cooperation between the groove and the protrusion, the first template 107a, the second template 107b and the spare template 107c can be connected more tightly, so that the model can be formed more smoothly when injecting cement. At the same time, a second magnet 107e is provided on one side of the first template 107a, the second template 107b and the spare template 107c, and the second magnet 107e is the S pole. Through the setting of the second magnet 107e, the first template 107a, the second template 107b and the spare template 107c can be smoothly fitted with the pressure piece 106.

[0038] A mounting hole 107d is provided on the first template 107a, and the mounting hole 107d passes through the first template 107a. The setting of the mounting hole 107d facilitates the subsequent installation of the retention member 108.

[0039] Example 2

[0040] Reference Figure 4 , which is the second embodiment of the present utility model, is based on the previous embodiment, and differs from the previous embodiment in that:

[0041] The detection assembly 100 further includes a retention member 108 .

[0042] Specifically, a cylinder 108a is movably inserted into the mounting hole 107d, and the interior of the cylinder 108a is hollow, so that after pouring, the anchor rod can be better inserted into the injection mold 105 to carry out the anchor beam pull-out test. Grouting holes 108b are symmetrically opened on the cylinder 108a. The opening of the grouting holes 108b facilitates the installation of the connecting pipe 108c. The grouting hole 108b is movably connected to the connecting pipe 108c, and the connecting pipe 108c is a thin-walled tube for grouting. Through the cooperation between the grouting hole 108b and the connecting pipe 108c, the injected slurry can be more evenly distributed around the anchor rod during the secondary grouting, preventing the slurry from being unable to completely cover the gap between the anchor rod and the concrete injection mold 105 due to internal air pressure, thereby making the anchor rod and the concrete injection mold 105 more closely bonded together, further improving the accuracy of the test results of the force characteristic model test device.

[0043] During use, before pouring concrete, the anchor rod is installed in the cylinder 108a and passed through the mounting hole 107d, and the connecting pipe 108c is set in the grouting hole 108b, and then the concrete pouring template is poured. After pouring and curing, the concrete pouring template is removed, and the cylinder 108a installed in the mounting hole 107d is also removed. At this time, the concrete injection model 105 formed will leave a central hole along the length direction due to the removal of the cylinder 108a. At this time, the anchor rod is passed through the central hole of the concrete injection model 105 to facilitate the subsequent pressure piece to perform a stress characteristic model test on the anchor rod, and then cement slurry is injected into the central hole of the concrete injection model 105 through the connecting pipe 108c. After the cement slurry is completely cured, the anchor rod can be completely bonded to the concrete injection model 105, and the connecting pipe 108c is pulled out to complete the molding of the concrete injection model 105. The concrete injection model 105 produced by this method can simulate the influence of prestress on the rock anchor beam anchor rod under actual conditions, thereby improving the accuracy of the test results of the force characteristic model test device. There is no need to carry the injection model 105 back and forth, making the test more convenient and quick.

[0044] Example 3

[0045] Reference Figure 5 , which is the second embodiment of the present utility model. This embodiment is based on the previous embodiment, and is different from the previous embodiment in that: the top of the bottom plate 101 is symmetrically welded with side plates 102, and the top outer side of the side plate 102 is provided with an auxiliary plate 102a, and two auxiliary plates 102a are provided, and the two auxiliary plates 102a are arranged opposite to each other. By providing the auxiliary plates 102a, the force-bearing area of ​​the top plate 103 and the side plates 102 can be increased. When the vertical loading jack 106d applies a vertical load to the concrete injection mold 105, a reaction force will be generated on the top plate 103. By increasing the force-bearing area of ​​the top plate 103 and the side plates 102, the effect of the reaction force can be shared, the possibility of deformation of the top plate 103 is reduced, the service life of the device is increased, and the accuracy of the measurement results of the force characteristic model test device is improved.

[0046] A symmetrical array of screws 104 is provided on the top plate 103, and an array of limiting holes 104a is provided on the two auxiliary plates 102a. The screws 104 are threadedly connected to the limiting holes 104a. By adopting the matching form of the limiting holes 104a and the screws 104, it can meet the fixing requirements of the top plate 103 and facilitate disassembly. When it is necessary to disassemble and separate the top plate 103 from the side plates 102, it is only necessary to operate the screws 104 to complete the disassembly work. It is also easy to operate when installing the top plate 103. Compared with ordinary bolts, the screws 104 can provide fastening force to the assembly from the top of the top plate 103 and the bottom of the auxiliary plates 102a at the same time, thereby improving the stability of the force characteristic model test device.

[0047] It is worth noting that: a top plate 103 is movably provided on the two auxiliary plates 102a, and the top plate 103 and the side plates 102 are detachably connected. When pouring the concrete injection model 105, the top plate 103 can be disassembled, which facilitates the smooth progress of the pouring process. At the same time, it is also more convenient to disassemble the concrete pouring template. When it is necessary to apply a force test to the concrete injection model 105, the top plate 103 can be connected and fixed to the side plates 102 so that the top plate 103 is sufficient to provide a reaction force to the vertical loading jack 106d to ensure the normal progress of the test. The detachable connection between the top plate 103 and the side plates 102 improves the operation convenience of the force characteristic model test device.

[0048] Preferably, the pressure member 106 includes a mounting seat 106a provided on the inner side of the side plate 102 and the top plate 103. The arrangement of the mounting seat 106a facilitates the arrangement of the horizontal loading jack 106b and the vertical loading jack 106d. The mounting seats 106a are arranged in an array. The horizontal loading jack 106b and the vertical loading jack 106d are respectively provided on the mounting seats 106a. By the arrangement of the horizontal loading jack 106b and the vertical loading jack 106d, the horizontal load and the vertical load can be applied to the injection mold 105, so that the injection mold 105 can be pressed. The force on the concrete injection mold 105 is more precise. One end of the horizontal loading jack 106b and the vertical loading jack 106d is provided with a pressure dividing plate 106c. The provision of the pressure dividing plate 106c can increase the force-bearing area when the horizontal loading jack 106b and the vertical loading jack 106d apply load to the concrete injection mold 105, thereby making the load on the concrete injection mold 105 more uniform, preventing the concrete injection mold 105 from being collapsed due to excessive force concentration, and further extending the service life of the force characteristic model test device;

[0049] At the same time, a first magnet 106f is provided on the outside of the pressure dividing plate 106c. The first magnet 106f is the N pole and is installed opposite to the second magnet 107e. When the pressure dividing plate 106c approaches the first template 107a, the second template 107b and the spare template 107c, the pressure dividing plate 106c can be fitted with the first template 107a, the second template 107b and the spare template 107c, so that before injection molding, the horizontal loading jack 106b can push the pressure dividing plate 106c to move to the center of the bottom plate 101, driving the first template 107a and the second template 107b on one side of the pressure dividing plate 106c. 107b and the spare template 107c move from both sides of the base plate 101 to the center position to realize the molding of the injection molded part 107, which is convenient for the subsequent pouring of cement. After the injection mold 105 is formed, the horizontal loading jack 106b can drive the pressure dividing plate 106c to move to both sides of the base plate 101, thereby driving the first template 107a, the second template 107b and the spare template 107c outside the pressure dividing plate 106c to move to both sides of the base plate, thereby realizing the separation of the first template 107a, the second template 107b and the spare template 107c from the injection mold 105, making the operation faster and more convenient.

[0050] Furthermore, four groups of horizontal loading jacks 106b and vertical loading jacks 106d are provided. The horizontal loading jacks 106b are provided on the inner wall of the side plate 102, and the vertical loading jacks 106d are provided on the inner wall of the top plate 103. By setting up four horizontal loading jacks 106b and four vertical loading jacks 106d, loads of different sizes can be applied respectively to simulate the change of surrounding rock stress along the depth, so that the simulation of this device is more in line with the actual application scenario.

[0051] It is worth noting that the pressure member 106 also includes through-hole jacks 106e symmetrically arranged at both ends of the cylinder 108a, and the through-hole jacks 106e are fixedly arranged at both ends of the anchor rod so that it is roughly maintained in the middle part of the central hole of the concrete injection model 105, and the through-hole jacks 106e are used to load the anchor rod to the required prestress value, so that the anchor beam pull-out test can be carried out on the concrete injection model 105.

[0052] Furthermore, the auxiliary part 109 includes a first demagnetization plate 109a symmetrically arranged on the side plate 102, a second demagnetization plate 109b symmetrically arranged on the bottom plate 101, and a horizontal loading jack 106b is arranged between the first demagnetization plate 109a and the second demagnetization plate 109b. Through the cooperation between the first demagnetization plate 109a and the second demagnetization plate 109b, the suction force between the first magnet 106f and the second magnet 107e can be offset. After the first template 107a, the second template 107b and the spare template 107c are separated from the injection mold 105, the first template 107a, the second template 107b and the spare template 107c are separated from the pressure divider 106c, which is convenient for the staff to move the first template 107a, the second template 107b and the spare template 107c away from the bottom plate 101, and facilitate the subsequent anchor pull-out test.

[0053] When in use, first, the horizontal loading jacks 106b on both sides of the inner wall of the side plate 102 push the pressure dividing plate 106c to move toward the center position of the bottom plate 101. At the same time, through the cooperation between the first magnet 106f and the second magnet 107e on one side, the pressure dividing plate 106c pushes the first template 107a, the second template 107b and the spare template 107c to move synchronously, thereby realizing the molding of the injection molded part 107, facilitating the pouring of cement to realize the molding of the injection mold 105, and then the horizontal loading jacks 106b drive the pressure dividing plate 106c to move toward both sides of the bottom plate 101, thereby driving the first template 107a, the second template 107b and the spare template 107c outside the pressure dividing plate 106c to move toward both sides of the bottom plate, realizing the first template 107a, the second template 107b and the spare template The plate 107c is separated from the injection mold 105. When the top and bottom ends of the first template 107a, the second template 107b and the spare template 107c are respectively released from the first demagnetization plate 109a and the second demagnetization plate 109b, the first demagnetization plate 109a and the second demagnetization plate 109b cooperate with each other to offset the attraction between the first magnet 106f and the second magnet 107e. After the first template 107a, the second template 107b and the spare template 107c are separated from the injection mold 105, the first template 107a, the second template 107b and the spare template 107c are separated from the pressure dividing plate 106c, which makes it convenient for the staff to move the first template 107a, the second template 107b and the spare template 107c away from the base plate 101, and facilitate the subsequent anchor pull-out test.

[0054] It is important to note that the construction and arrangement of the present application shown in a number of different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, it should be readily understood by those who refer to this disclosure that many modifications are possible (e.g., the size, scale, structure, shape and proportion of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, directional changes, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application. For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of the element may be inverted or otherwise changed, and the nature or number or position of the discrete elements may be altered or changed. Therefore, all such modifications are intended to be included within the scope of the present invention. The order or sequence of any process or method steps may be changed or reordered according to alternative embodiments. In the claims, any "means plus function" clause is intended to cover the structure described herein that performs the function, and is not only structurally equivalent but also an equivalent structure. Without departing from the scope of the present invention, other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0055] Additionally, in order to provide a concise description of example embodiments, all features of an actual embodiment (ie, those features that are not relevant to the best mode presently contemplated for carrying out the invention or those that are not relevant to implementing the invention) may not be described.

[0056] It will be understood that in the development of any actual embodiment, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort may be complex and time-consuming, but for those of ordinary skill having the benefit of this disclosure, the development effort will be a routine task of design, fabrication, and production without undue experimentation.

[0057] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, and all of these should be included in the scope of the claims of the present invention.

Claims

1. A stress characteristic model test device, characterized by: The invention comprises a detection component (100), comprising a base plate (101), an injection molded part (107) movably provided on the base plate (101), an injection molded model (105) provided in the injection molded part (107), a pressure part (106) movably provided on the injection molded model (105), a retention part (108) provided in the injection molded part (107), and auxiliary parts (109) symmetrically provided on the base plate (101).

2. The stress characteristic model test device according to claim 1, characterized in that: The injection molded part (107) comprises a first template (107a) symmetrically arranged on the bottom plate (101), second templates (107b) are connected to both sides of the first template (107a), and a spare template (107c) is movably arranged between the first template (107a) and the second template (107b); The first template (107a) and the second template (107b) are perpendicular to each other and form a rectangular parallelepiped structure. An injection mold (105) is cast between the first template (107a) and the second template (107b).

3. The stress characteristic model test device according to claim 2, characterized in that: A groove is provided on one side of the first template (107a), a convex block is provided on the side of the second template (107b) close to the first template (107a), a convex block is provided on one side of the spare template (107c), and a groove is provided on the other side of the spare template (107c).

4. The stress characteristic model test device according to claim 3, characterized in that: The first template (107a) and the second template (107b) are both provided with mounting holes (107d), and the mounting holes (107d) pass through the first template (107a) and the second template (107b); A second magnet (107e) is provided on one side of the first template (107a), the second template (107b) and the spare template (107c).

5. The stress characteristic model test device according to claim 4, characterized in that: A cylinder (108a) is movably inserted into the installation hole (107d), grouting holes (108b) are symmetrically opened on the cylinder (108a), and a connecting pipe (108c) is movably connected to the grouting hole (108b).

6. The stress characteristic model test device according to claim 3, characterized in that: The top of the bottom plate (101) is symmetrically welded with side plates (102), and the outer sides of the tops of the side plates (102) are provided with auxiliary plates (102a). There are two auxiliary plates (102a), and the two auxiliary plates (102a) are arranged opposite to each other.

7. The stress characteristic model test device according to claim 6, characterized in that: A top plate (103) is movably provided on the two auxiliary plates (102a), screws (104) are symmetrically arranged in an array on the top plate (103), and limiting holes (104a) are arranged in an array on the two auxiliary plates (102a), and the screws (104) are threadedly connected to the limiting holes (104a).

8. The stress characteristic model test device according to claim 7, characterized in that: The pressure member (106) includes a mounting seat (106a) provided on the inner side of the side plate (102) and the top plate (103); the mounting seats (106a) are arranged in an array; a horizontal loading jack (106b) and a vertical loading jack (106d) are respectively provided on the mounting seat (106a); a pressure dividing plate (106c) is provided at one end of each of the horizontal loading jack (106b) and the vertical loading jack (106d); and a first magnet (106f) is provided on the outer side of the pressure dividing plate (106c); The horizontal loading jacks (106b) and the vertical loading jacks (106d) are both provided in four groups. The horizontal loading jacks (106b) are provided on the inner wall of the side plate (102), and the vertical loading jacks (106d) are provided on the inner wall of the top plate (103).

9. The stress characteristic model test device according to claim 5, characterized in that: The pressure member (106) further includes through-hole jacks (106e) symmetrically arranged at both ends of the cylinder (108a).

10. The stress characteristic model test device according to claim 8, characterized in that: The auxiliary component (109) includes a first demagnetization plate (109a) symmetrically arranged on the side plate (102), a second demagnetization plate (109b) symmetrically arranged on the bottom plate (101), and the horizontal loading jack (106b) is arranged between the first demagnetization plate (109a) and the second demagnetization plate (109b).

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