Double-disturbance true triaxial model and test method thereof

Abstract

The invention relates to a double-disturbance true triaxial model and a test method thereof, and relates to the technical field of true triaxial. The test model comprises a model main body and a supporting oil cylinder arranged at the bottom of the model main body, and the output end of the supporting oil cylinder is provided with a supporting block used for supporting a rock test piece; a workbench used for bearing the model body is arranged at the bottom of the model body, and the supporting oil cylinder is located in the workbench. A lifting assembly for lifting the model main body is arranged on the workbench, and a transportation assembly for transporting a rock test piece is arranged on one side of the workbench; the device has the effect of conveniently replacing the rock test piece in the model main body.

Description

Technical Field

[0001] The present application relates to the technical field of true triaxial technology, and in particular to a double-disturbance true triaxial model and a test method thereof. Background Art

[0002] A true triaxial test is a triaxial compression test in which a rock specimen is subjected to a stress combination state in which the three principal stresses are unequal (i.e., σ1 > σ2 > σ3). This test can study the effect of the intermediate principal stress (σ2) on the deformation and strength properties of rock.

[0003] In the related art, a true triaxial test model includes a model body and four groups of side cylinders arranged on the peripheral wall of the model body. All the side cylinders are located on the same horizontal plane, and the side cylinders are arranged opposite to each other in pairs. The output ends of each group of side cylinders are fixedly connected to side pressure blocks for pressing rock specimens. The rock specimens are usually composed of square rock specimens with six sides provided with enclosures. A pressing cylinder is installed on the top of the model body, and a pressing block for pressing the rock specimen is installed on the output end of the pressing cylinder. A supporting cylinder is installed on the bottom of the model body, and a supporting block for supporting the rock specimen is provided on the output end of the supporting cylinder, and the output ends of the pressing cylinder and the supporting cylinder are coaxial. Finally, the rock specimen is placed between the side pressure blocks, the pressing blocks and the supporting blocks for testing.

[0004] Regarding the above-mentioned related technologies, the overall structure of the true triaxial test model is usually very compact after assembly, and the rock specimen itself is heavy, which makes it very inconvenient to manually replace the rock specimen inside the model body, seriously affecting the efficiency of the true triaxial test, so it needs to be improved. Summary of the Invention

[0005] In order to improve the problem of inconvenience in replacing rock specimens inside the model body, the present application provides a double-disturbance true triaxial model and a test method thereof.

[0006] In the first aspect, the present application provides a dual-disturbance true three-axis model, which adopts the following technical solutions: A dual-disturbance true triaxial model comprises a model body and a supporting oil cylinder arranged at the bottom of the model body, wherein the output end of the supporting oil cylinder is provided with a supporting block for supporting a rock specimen; a workbench for carrying the model body is provided at the bottom of the model body, and the supporting oil cylinder is located inside the workbench; a lifting assembly for lifting the model body is provided on the workbench, and a transport assembly for transporting the rock specimen is provided on one side of the workbench.

[0007] By adopting the above technical solution, the lifting component adjusts the distance between the model body and the supporting cylinder on the workbench, and the transport component quickly transfers the rock specimen to the supporting cylinder, and cooperates with the extension and retraction of the output end of the supporting cylinder to realize the convenient replacement of the rock specimen inside the model body, thereby improving the overall work efficiency of the test.

[0008] Preferably, the lifting assembly includes a positioning shaft and a lifting member; the positioning shaft is arranged on the workbench, the positioning shafts are distributed at intervals along the circumference of the model body, and each of the positioning shafts passes through the model body; the lifting member is arranged between the workbench and the model body, and the output direction of the lifting member is parallel to the length direction of the positioning shaft, so as to drive the model body to lift and lower.

[0009] By adopting the above technical solution, the positioning axis guides and limits the sliding direction of the model body, and the output end of the lifting part performs telescopic movement to drive the model body to move up and down, thereby adjusting the distance between the model body and the supporting cylinder on the workbench to facilitate the replacement of the rock specimen inside the model body.

[0010] Preferably, the transport assembly includes a slide rail, an electric slide, a transport frame and a transport platform; the slide rail is arranged on the workbench, the electric slide is slidably arranged on the slide rail, the transport frame is arranged on the electric slide, the transport platform is arranged on the transport frame, and the transport frame and the transport platform are jointly provided with a clearance gap on the side wall facing the supporting cylinder for the supporting cylinder and the supporting block to be pressed into, and the transport platform is provided with a placement groove inside the clearance gap for the rock specimen to be pressed into.

[0011] By adopting the above technical solution, the placement groove on the transport platform facilitates the positioning and placement of the rock specimens, and the clearance gap facilitates the support block and the support cylinder to enter the interior of the transport frame and the transport platform, thereby facilitating the use of the telescopic movement of the output end of the support cylinder to achieve the position change of the rock specimen between the transport platform and the support block, thereby realizing the convenient replacement of the rock specimen inside the model body.

[0012] Preferably, the workbench is provided with a material moving assembly for moving the rock specimen from the transport platform to the support block.

[0013] By adopting the above technical solution, the material transfer assembly moves the rock specimen from the transport platform to the support block, reducing the need to move the support cylinder to adjust the position of the rock specimen before the test begins, and reducing the time lost in reinitializing and debugging the support cylinder, thereby improving the work efficiency of the test.

[0014] Preferably, the material moving assembly includes a lifting block, an extension plate, a hanging rod, an anti-slip block, an elastic member and a driving member; the lifting block is slidably lifted and lowered inside the clearance gap of the transport frame to lift the rock specimen, and the extension plate is arranged at the end of the lifting block away from the transport platform, the hanging rod is arranged on the bottom wall of the transport platform, the hanging rods are distributed at intervals along the circumference of the extension plate, and the end of each of the hanging rods away from the transport platform passes through the extension plate, and the anti-slip plate is arranged at the end of each group of hanging rods away from the transport platform to limit the extension plate from separating from the hanging rod; the elastic member is arranged between the extension plate and each group of anti-slip blocks to drive the extension plate to move toward the transport platform through its own elasticity; the driving member is arranged on the transport frame to drive the lifting block to move in the direction away from the slide rail, and when the rock specimen moves onto the support block, the driving member drives the lifting block to descend.

[0015] By adopting the above technical solution, during the process of the transport rack and the transport platform moving the rock specimen to the support block, the driving component drives the lifting block to lift the rock specimen so that the rock specimen follows the transport platform to move directly above the support block, and then the driving component cancels the lifting of the lifting block and the rock specimen. Under the action of their own gravity, the lifting block and the rock specimen drop rapidly and the elastic component cushions the rock specimen, so that the rock specimen falls onto the support block and the rock specimen is separated from the lifting block, thereby realizing the automatic loading of the rock specimen.

[0016] Preferably, the driving member includes a lifting rack, a driving gear and a fixed rack; the lifting rack is arranged on the side wall of the extension plate facing the slide rail, the driving gear is rotatably arranged on the transport frame, the fixed rack is arranged on the side wall of the slide rail facing the transport platform, the fixed rack is located at the end of the slide rail facing the supporting cylinder, and the lifting rack and the fixed rack are both engaged with the driving gear.

[0017] By adopting the above technical solution, when the transport rack and the transport platform move the rock specimen to the support block, the driving gear meshes with the fixed rack for transmission, causing the driving gear to rotate. The rotating driving gear drives the lifting rack to move upward, so that the extension plate lifts the lifting block and the rock specimen, so that the rock specimen moves to the top of the support block; then the driving gear disengages from the fixed rack, and the lifting rack receives the gravity force of the rock specimen and quickly descends, thereby realizing the rapid transfer of the rock specimen from the lifting block to the support block; When the transport rack and the transport platform gradually move away from the model body to reset, the driving gear and the fixed rack engage and transmit, causing the lifting rack to move downward and the elastic member to deform and shrink; after the fixed rack and the driving gear are disengaged from each other, the elastic member recovers its deformation through its own elastic force, causing the lifting rack to move upward and reset, thereby realizing the reset of the entire driving member.

[0018] Preferably, a loading transport part for transporting rock specimens toward the transport platform is provided on one side of the transport platform, a positioning rod for positioning rock specimens is provided at the end of the loading transport part facing the transport platform, and a unloading transport part for transporting rock specimens toward a direction away from the transport platform is provided on the other side of the transport platform, and a transfer component for transferring rock specimens is provided between the loading transport part, the transport platform and the unloading transport part.

[0019] By adopting the above technical solution, the transfer component transfers the rock specimens from the loading transport to the transport platform, and transfers the rock specimens that have completed the test on the transport platform to the unloading transport, reducing the time and energy consumed by manual handling of heavy rock specimens, thereby improving the work efficiency of the test.

[0020] Preferably, the transfer assembly includes a transfer frame, a transfer screw, a transfer motor, a mounting frame, a lifting cylinder and two groups of clamping parts; the transfer frame is slidably arranged between the loading transport part and the unloading transport part, the transfer screw is rotatably arranged on one side of the transport platform, the transfer screw passes through the transfer frame, the length direction of the transfer screw is parallel to the moving direction of the transfer frame, and the transfer screw is threadedly connected to the transfer frame; the transfer motor is arranged at the end of the transfer screw to drive the transfer screw to rotate; the mounting frame is arranged on the side of the transfer frame facing the transport platform, and the lifting cylinder is arranged between the mounting frame and the transfer frame to drive the mounting frame close to or away from the transport platform; the two clamping parts are both arranged on the mounting frame to clamp the rock specimens.

[0021] By adopting the above technical solution, the lifting cylinder drives the mounting frame and the clamping parts to approach the rock specimen, and the two sets of clamping parts can simultaneously clamp the rock specimens on the loading transport part and the transport platform. The lifting cylinder drives the clamping parts to move the rock specimen upward, and after disengaging from the loading transport part and the transport platform, the transfer motor is controlled to drive the transfer screw to rotate, so that the rock specimen after the test is completed is moved to the unloading transport part, and the rock specimen to be tested is moved from the loading transport part to the transport platform, thereby realizing the synchronous loading and unloading of the rock specimens.

[0022] Preferably, the clamping member includes two groups of clamping plates, a clamping screw and a clamping motor; the two clamping plates are slidably arranged on the side wall of the mounting frame facing the transport platform, and the clamping screw is rotatably arranged on the mounting frame, one end of the clamping screw passes through one group of clamping plates, and the other end of the clamping screw passes through the other group of clamping plates, the clamping screw is threadedly connected to each group of clamping plates, and the threads at both ends of the clamping screw are opposite; the clamping motor is arranged on the mounting frame to drive the clamping screw to rotate.

[0023] By adopting the above technical solution, the output end of the clamping motor drives the clamping screw to rotate, and the rotating clamping screw drives the clamping plates, so that the two groups of clamping plates move toward each other to clamp and loosen the rock specimen.

[0024] Secondly, The present application provides a double-disturbance true triaxial model test method, comprising the following steps: Lifting: The lifting component drives the model body to rise; Transport: The transport assembly transports the rock specimen to the top of the support block; Transfer: The output end of the support cylinder drives the support block to rise and lift the rock specimen out of the transport assembly; Reset: The transport component separates from the model body, the lifting component drives the model body down to reset, and the output end of the supporting cylinder contracts and resets.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The lifting assembly is used to adjust the distance between the model body and the support cylinder on the workbench. The transport assembly quickly transfers the rock specimen to the support cylinder. The output end of the support cylinder can be extended and retracted to facilitate the replacement of rock specimens inside the model body, thereby improving the overall efficiency of the test. 2. By setting up a material transfer assembly to move the rock specimen from the transport platform to the support block, the need to move the support cylinder to adjust the position of the rock specimen before the test begins is reduced, and the time lost in reinitializing and debugging the support cylinder is reduced, thereby improving the test efficiency; 3. By setting up a transfer component to transfer the rock specimens from the loading transport to the transport platform, and then transfer the rock specimens that have completed the test on the transport platform to the unloading transport, the time and energy consumed by manual handling of heavy rock specimens is reduced, thereby improving the work efficiency of the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural diagram of a double-disturbance true triaxial model and its test method in Example 1 of the present application.

[0027] Figure 2 It is a structural diagram used to illustrate the connection relationship between the support cylinder and the transport component in Example 1.

[0028] Figure 3 It is a structural diagram used to reflect the connection relationship between the model body and the transfer component in Example 2.

[0029] Figure 4 It is a structural diagram used to illustrate the connection relationship between the supporting cylinder and the material moving assembly in Example 2.

[0030] Figure 5 It is a structural diagram used to reflect the connection relationship between the material moving component and the transport rack in Example 2.

[0031] Figure 6 It is a structural diagram used to reflect the connection relationship between the transfer component and the transport platform in Example 2.

[0032] Figure 7 It is a structural diagram used to reflect the internal structure of the transfer component in Example 2.

[0033] Description of reference numerals: 1. Model body; 10. Rock specimen; 11. Support cylinder; 111. Support block; 12. Workbench; 121. Loading transport unit; 1211. Positioning rod; 122. Unloading transport unit; 2. Lifting assembly; 21. Positioning shaft; 22. Lifting unit; 3. Transport assembly; 31. Slide rail; 32. Electric slide; 33. Transport rack; 34. Transport platform; 341. Clearance; 342. Placement slot; 4. Material transfer assembly ; 41. Lifting block; 42. Extension plate; 43. Hanging rod; 44. Anti-slip block; 45. Elastic part; 46. Driving part; 461. Lifting rack; 462. Driving gear; 463. Fixed rack; 5. Transfer assembly; 51. Transfer frame; 52. Transfer screw; 53. Transfer motor; 54. Mounting frame; 55. Lifting cylinder; 56. Clamping part; 561. Clamping plate; 562. Clamping screw; 563. Clamping motor. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-7 This application is described in further detail.

[0035] The embodiments of the present application disclose a dual-disturbance true triaxial model and a test method thereof, which are used to conveniently replace rock specimens inside the model body.

[0036] Example 1: Reference Figure 1 and Figure 2 A dual-perturbation true triaxial model includes a model body 1 and a support cylinder 11 mounted at the bottom of the model body 1. The output end of the support cylinder 11 is mounted with a support block 111 for supporting a rock specimen 10. Four sets of side cylinders are mounted along the perimeter wall of the model body 1 at intervals. All side cylinders are located on the same horizontal plane, with pairs of side cylinders facing each other. The output end of each set of side cylinders is fixedly connected to a side pressure block for pressing the rock specimen 10. In this embodiment, dynamic perturbations are installed on any two adjacent sets of side cylinders to enhance the test quality of the true triaxial model.

[0037] Reference Figure 1 and Figure 2A workbench 12 is mounted at the bottom of the model body 1 to support the model body 1, and a support cylinder 11 is located inside the workbench 12. A lifting assembly 2 is mounted on the workbench 12 to move the model body 1 toward or away from the support cylinder 11; a transport assembly 3 is mounted on one side of the workbench 12 to transport the rock specimen 10 to the support cylinder 11.

[0038] Reference Figure 1 and Figure 2 The lifting assembly 2 includes positioning shafts 21 and lifting members 22. The positioning shafts 21 are fixedly mounted vertically on the workbench 12. The positioning shafts 21 are spaced apart along the circumference of the model body 1, and each positioning shaft 21 extends through the model body 1. In this embodiment, the lifting members 22 are lifting cylinders 55. The lifting members 22 are mounted on the workbench 12 and spaced apart along the circumference of the model body 1. The output ends of the lifting members 22 are fixedly connected to the model body 1. The output direction of each set of lifting members 22 is parallel to the length of the positioning shafts 21, thereby driving the model body 1 to move upward and downward.

[0039] Reference Figure 1 and Figure 2 The transport assembly 3 includes a slide rail 31, an electric slide 32, a transport frame 33 and a transport platform 34; the slide rail 31 is fixedly mounted on the workbench 12, and one end of the slide rail 31 is located outside the model body 1, and the other end of the slide rail 31 is located at the support cylinder 11. The electric slide 32 is slidably mounted on the slide rail 31 through a motor and a gear, the transport frame 33 is fixedly mounted on the electric slide 32, and the transport platform 34 is fixedly mounted on the transport frame 33, so that the electric slide 32 drives the transport frame 33 and the transport platform 34 to slide along the length direction of the slide rail 31. The transport frame 33 and the transport platform 34 are jointly provided with a clearance gap 341 on the side wall facing the support cylinder 11 for the support cylinder 11 and the support block 111 to be pressed into, and the transport platform 34 is provided with a placement groove 342 inside the clearance gap 341 for the rock specimen 10 to be pressed into.

[0040] The implementation principle of a double-disturbance true three-axis model in Example 1 of the present application is as follows: The rock specimen 10 to be tested is placed inside the placement groove 342, and the output end of the lifting member 22 is controlled to extend, driving the model body 1 gradually away from the workbench 12 and the supporting cylinder 11, gradually increasing the distance between the model body 1 and the workbench 12.

[0041] Start the electric slide 32, which drives the transport frame 33, the transport platform 34 and the rock specimen 10 to move to the supporting cylinder 11; at this time, the rock specimen 10 is located directly above the supporting block 111, and the output end of the supporting cylinder 11 is controlled to extend, and the supporting block 111 lifts the rock specimen 10 to separate from the transport platform 34, thereby realizing the loading of the rock specimen 10.

[0042] When the rock specimen 10 needs to be unloaded, the electric slide 32 is controlled to drive the transport platform 34 to move to the bottom of the support block 111, and the output end of the supporting oil cylinder 11 is controlled to contract so that the rock specimen 10 falls into the placement groove 342 to separate from the support platform. Then the electric slide 32 is controlled to drive the transport frame 33, the transport platform 34 and the rock specimen 10 to gradually separate from between the model main body 1 and the workbench 12, thereby realizing the unloading of the rock specimen 10, thereby realizing the convenient replacement of the rock specimen 10 inside the model main body 1, and improving the testing efficiency of the true triaxial model.

[0043] Example 1 of the present application also discloses a test method for a double-disturbance true triaxial model, comprising the following steps: Lifting: The lifting component 2 drives the model body 1 to rise, increasing the gap between the model body 1 and the workbench 12; Transport: The transport component 3 transports the rock specimen 10 to the top of the support block 111; Transfer: The output end of the supporting oil cylinder 11 extends to drive the supporting block 111 to rise, and lift the rock specimen 10 to gradually separate from the transport assembly 3; Reset: The transport assembly 3 is reset to separate from between the model body 1 and the workbench 12, the lifting assembly 2 drives the model body 1 to descend and reset, and the output end of the supporting cylinder 11 is retracted and reset.

[0044] Example 2: The difference between this embodiment 2 and embodiment 1 is that: Figure 3 、 Figure 4 and Figure 5 The workbench 12 is provided with a material moving assembly 4 for moving the rock specimen 10 from the transport platform 34 to the support block 111. The material moving assembly 4 comprises a lifting block 41, an extension plate 42, a suspension rod 43, an anti-slip block 44, an elastic member 45, and a driving member 46. The suspension rods 43 are fixedly mounted on the side wall of the transport platform 34 facing the transport frame 33 at intervals around the clearance notch 341, and the extension plates 42 are slidably sleeved on all the suspension rods 43. The anti-slip block 44 is fixedly connected to the end of each group of suspension rods 43 away from the transport platform 34 to prevent the extension plates 42 from detaching from the suspension rods 43.

[0045] Reference Figure 4 and Figure 5 The lifting block 41 is fixedly connected to the side wall of the extension plate 42 facing the transport platform 34, and the lifting block 41 is located within the clearance gap 341 between the transport frame 33 and the transport platform 34. In this embodiment, the side walls of the lifting block 41 and the extension plate 42 facing the support cylinder 11 are both provided with abutment gaps for the support cylinder 11 and the support block 111 to abut against, so that the lifting block 41 can lift the rock specimen 10.

[0046] Reference Figure 4 and Figure 5 In this embodiment, the elastic member 45 is a spring. The elastic member 45 is sleeved on each set of suspension rods 43, and each set of elastic members 45 is located between the extension plate 42 and each set of anti-slip blocks 44, so as to drive the extension plate 42 toward the transport platform 34 through its own elasticity.

[0047] Reference Figure 4 and Figure 5 The driver 46 is mounted on the transport frame 33 to drive the lifting block 41 away from the slide rail 31. When the rock specimen 10 moves onto the support block 111, the driver 46 drives the lifting block 41 downward. The driver 46 includes a lifting rack 461, a driving gear 462, and a fixed rack 463. The lifting rack 461 is fixedly mounted on the side wall of the extension plate 42 facing the slide rail 31, and the length of the lifting rack 461 is parallel to the length of the suspension rod 43.

[0048] Reference Figure 4 and Figure 5 The driving gear 462 is rotatably connected to the bottom of the transport frame 33, and the driving gear 462 is meshed with the lifting rack 461. The fixed rack 463 is fixedly connected to the end of the slide rail 31 facing the support cylinder 11, and the fixed rack 463 is located on the side wall of the slide rail 31 facing the transport platform 34.

[0049] Reference Figure 4 and Figure 5 As the transport platform 34 drives the driving gear 462 to gradually approach the support block 111, the support block 111 gradually presses into the interior of the lifting block 41, and the driving gear 462 gradually engages with the fixed rack 463, driving the lifting rack 461 to drive the extension plate 42 to gradually move away from the slide rail 31, so that the lifting block 41 lifts the rock specimen 10. After the support block 111 is fully pressed into the lifting block 41, the driving gear 462 and the fixed rack 463 disengage from each other, and the lifting block 41 falls rapidly under the influence of its own gravity, placing the rock specimen 10 on the support block 111 and disengaging from the lifting block 41, thus achieving the automatic transfer of the rock specimen 10 to the support block 111.

[0050] Reference Figure 3 and Figure 6 A loading and transporting member 121 is mounted on one side of the transport platform 34 for transporting the rock specimen 10 toward the transport platform 34. In this embodiment, the loading and transporting member 121 can be a conveyor. A positioning rod 1211 is fixedly mounted on the end of the loading and transporting member 121 facing the transport platform 34, which abuts against the side wall of the rock specimen 10 to position the rock specimen 10.

[0051] Reference Figure 3 and Figure 6A discharge transport member 122 is mounted on the other side of the transport platform 34 away from the loading transport member 121. In this embodiment, the discharge transport member 122 may be a conveyor. A transfer assembly 5 is mounted between the loading transport member 121, the transport platform 34, and the discharge transport member 122 to transfer the rock specimen 10 between the loading transport member 121, the transport platform 34, and the discharge transport member 122.

[0052] Reference Figure 6 and Figure 7 The transfer assembly 5 includes a transfer frame 51, a transfer screw 52, ​​a transfer motor 53, a mounting frame 54, a lifting cylinder 55, and two sets of clamps 56. The transfer frame 51 is slidably mounted on the workbench 12 between the loading and unloading transport members 121 and 122. The transfer screw 52 is rotatably mounted on one side of the transport platform 34. The transfer screw 52 passes through the transfer frame 51, and its length is parallel to the direction of movement of the transfer frame 51. The transfer screw 52 is threadedly connected to the transfer frame 51. The transfer motor 53 is mounted on the workbench 12 at the end of the transfer screw 52. The output end of the transfer motor 53 is in driving connection with the end of the transfer screw 52 to drive the transfer screw 52 to rotate.

[0053] Reference Figure 6 and Figure 7 The mounting frame 54 is slidably installed on the side of the transfer frame 51 facing the transport platform 34 through a guide rod, and the lifting cylinder 55 is fixedly installed on the transfer frame 51. The output end of the lifting cylinder 55 is fixedly connected to the mounting frame 54, and the telescopic direction of the output end of the lifting cylinder 55 is parallel to the sliding direction of the mounting frame 54, so as to drive the mounting frame 54 close to or away from the transport platform 34.

[0054] Reference Figure 6 and Figure 7 Two sets of clamping members 56 are mounted on the mounting frame 54 to clamp the rock specimen 10. The clamping members 56 include two sets of clamping plates 561, a clamping screw 562, and a clamping motor 563. The two clamping plates 561 are slidably mounted on the side wall of the mounting frame 54 facing the transport platform 34 via sliding rods, and the clamping screw 562 is rotatably mounted on the mounting frame 54 via bearings. In this embodiment, the clamping screw 562 is a bidirectional screw. One end of the clamping screw 562 extends through one set of clamping plates 561, and the other end extends through the other set of clamping plates 561. The clamping screw 562 is threadedly connected to each set of clamping plates 561.

[0055] Reference Figure 6 and Figure 7The clamping motor 563 is fixedly mounted on the mounting frame 54 , and the output end of the clamping motor 563 is transmission-connected to the end of the clamping screw 562 to drive the clamping screw 562 to rotate and drive the two sets of clamping plates 561 to move toward each other to clamp and loosen the rock specimen 10 .

[0056] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A double-disturbance true triaxial model, comprising a model body (1) and a supporting cylinder (11) arranged at the bottom of the model body (1), wherein an output end of the supporting cylinder (11) is provided with a supporting block (111) for supporting a rock specimen (10); characterized in that: A workbench (12) for carrying the model body (1) is arranged at the bottom of the model body (1), and the supporting oil cylinder (11) is located inside the workbench (12); a lifting component (2) for lifting the model body (1) is arranged on the workbench (12), and a transport component (3) for transporting a rock specimen (10) is arranged on one side of the workbench (12).

2. A double-disturbance true triaxial model according to claim 1, characterized in that: The lifting component (2) comprises a positioning shaft (21) and a lifting member (22); the positioning shaft (21) is arranged on a workbench (12), the positioning shafts (21) are distributed at intervals along the circumference of the model body (1), and each of the positioning shafts (21) passes through the model body (1); the lifting member (22) is arranged between the workbench (12) and the model body (1), and the output direction of the lifting member (22) is parallel to the length direction of the positioning shaft (21), so as to drive the model body (1) to be lifted and lowered.

3. A double-disturbance true triaxial model according to claim 1, characterized in that: The transport assembly (3) comprises a slide rail (31), an electric slide (32), a transport frame (33) and a transport platform (34); the slide rail (31) is arranged on the workbench (12), the electric slide (32) is slidably arranged on the slide rail (31), the transport frame (33) is arranged on the electric slide (32), the transport platform (34) is arranged on the transport frame (33), and the side wall of the transport frame (33) and the transport platform (34) facing the supporting oil cylinder (11) is jointly provided with a clearance gap (341) for the supporting oil cylinder (11) and the supporting block (111) to press into, and the transport platform (34) is provided with a placement groove (342) inside the clearance gap (341) for the rock specimen (10) to press into.

4. A double-disturbance true triaxial model according to claim 3, characterized in that: The workbench (12) is provided with a material moving assembly (4) for moving the rock specimen (10) from the transport platform (34) to the support block (111).

5. A double-disturbance true triaxial model according to claim 4, characterized in that: The material moving assembly (4) comprises a lifting block (41), an extension plate (42), a suspension rod (43), an anti-slip block (44), an elastic member (45) and a driving member (46); the lifting block (41) is slidably and lifted inside a clearance notch (341) of a transport frame (33) for lifting the rock specimen (10), and the extension plate (42) is arranged at the end of the lifting block (41) away from the transport platform (34), the suspension rod (43) is arranged on the bottom wall of the transport platform (34), the suspension rod (43) is distributed at intervals along the circumference of the extension plate (42), and the end of each suspension rod (43) away from the transport platform (34) passes through the extension plate (42), the anti-slip plate is arranged at the end of each group of suspension rods (43) away from the transport platform (34) to limit the extension plate (42) from detaching from the suspension rod (43); the elastic member (45) is arranged between the extension plate (42) and each group of anti-slip blocks (44) to drive the extension plate (42) to move in a direction close to the transport platform (34) through its own elasticity; the driving member (46) is arranged on the transport frame (33) to drive the lifting block (41) to move in a direction away from the slide rail (31), and when the rock specimen (10) moves onto the support block (111), the driving member (46) drives the lifting block (41) to descend.

6. A double-disturbance true triaxial model according to claim 5, characterized in that: The driving member (46) includes a lifting rack (461), a driving gear (462) and a fixed rack (463); the lifting rack (461) is arranged on the side wall of the extension plate (42) facing the slide rail (31), the driving gear (462) is rotatably arranged on the transport frame (33), the fixed rack (463) is arranged on the side wall of the slide rail (31) facing the transport platform (34), the fixed rack (463) is located at the end of the slide rail (31) facing the supporting cylinder (11), and the lifting rack (461) and the fixed rack (463) are both meshed with the driving gear (462).

7. The double-disturbance true triaxial model according to claim 1, characterized in that: A loading transport member (121) for transporting a rock specimen (10) toward the transport platform (34) is provided on one side of the transport platform (34); a positioning rod (1211) for positioning the rock specimen (10) is provided at the end of the loading transport member (121) facing the transport platform (34); a unloading transport member (122) for transporting the rock specimen (10) in a direction away from the transport platform (34) is provided on the other side of the transport platform (34); and a transfer assembly (5) for transferring the rock specimen (10) is provided between the loading transport member (121), the transport platform (34) and the unloading transport member (122).

8. A double-disturbance true triaxial model according to claim 7, characterized in that: The transfer assembly (5) comprises a transfer frame (51), a transfer screw (52), a transfer motor (53), a mounting frame (54), a lifting cylinder (55) and two sets of clamping members (56); the transfer frame (51) is slidably arranged between a loading transport member (121) and a unloading transport member (122); the transfer screw (52) is rotatably arranged on one side of a transport platform (34); the transfer screw (52) passes through the transfer frame (51); the length direction of the transfer screw (52) is parallel to the moving direction of the transfer frame (51); and the transfer screw (52) is threadedly connected to the transfer frame (51); the transfer motor (53) is arranged at the end of the transfer screw (52) to drive the transfer screw (52) to rotate; the mounting frame (54) is arranged on the side of the transfer frame (51) facing the transport platform (34), and the lifting cylinder (55) is arranged between the mounting frame (54) and the transfer frame (51) to drive the mounting frame (54) to approach or move away from the transport platform (34); the two clamping members (56) are both arranged on the mounting frame (54) to clamp the rock specimen (10).

9. A double-disturbance true triaxial model according to claim 8, characterized in that: The clamping member (56) comprises two groups of clamping plates (561), a clamping screw (562) and a clamping motor (563); the two clamping plates (561) are slidably arranged on the side wall of the mounting frame (54) facing the transport platform (34); the clamping screw (562) is rotatably arranged on the mounting frame (54); one end of the clamping screw (562) passes through one group of clamping plates (561); the other end of the clamping screw (562) passes through the other group of clamping plates (561); the clamping screw (562) is threadedly connected to each group of clamping plates (561), and the threads at both ends of the clamping screw (562) are opposite; the clamping motor (563) is arranged on the mounting frame (54) to drive the clamping screw (562) to rotate.

10. A test method for a double-disturbance true triaxial model as claimed in any one of claims 1 to 9, characterized in that: The steps include: Lifting: The lifting component (2) drives the model body (1) to rise; Transport: The transport component (3) transports the rock specimen (10) to the top of the support block (111); Transfer: the output end of the supporting oil cylinder (11) drives the supporting block (111) to rise and lift the rock specimen (10) away from the transport assembly (3); Reset: The transport component (3) is separated from the model main body (1), the lifting component (2) drives the model main body (1) to descend and reset, and the output end of the supporting oil cylinder (11) is retracted and reset.

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