Triaxial adjustable microscopic observation system for geotechnical softening micromechanics test

Abstract

The present application relates to the technical fields of rock and soil measuring system, and discloses a triaxial adjustable microscopic observation system for rock and soil softening mesoscopic mechanics test, which comprises a bottom plate, a video recording mechanism and a sample loading assembly are arranged on the top of the bottom plate, a water supply controller is connected to the sample loading assembly, a control panel and a control hub are further arranged on the top of the bottom plate; the sample plate and the supporting ring are connected through interference fit, the sample plate and the supporting ring are provided with rotation damping, an angle detector is arranged outside the connecting shaft of the sample plate and the supporting ring, and the angle detector is signal connected with the control hub. The stability of the adjustment angle of the sample plate is ensured, the angle change during the observation process is avoided, and the observation result is affected, meanwhile, the deflection angle of the sample plate is observed through the angle detector, the deflection angle of the sample plate is directly output, the control hub directly receives the deflection angle of the sample plate, and the crack change of the rock and soil sample under the inclined state when encountering water is observed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geotechnical measurement system, in particular to a triaxial adjustable microscopic observation system for geotechnical softening meso-mechanical test. BACKGROUND

[0002] When the slope, foundation pit and tunnel and other areas experience long time rain or water immersion, the soil body connection inside the soil layer is weakened, and the cracks inside the rock-soil layer are prone to occur, and with the aggravation of the cracks, the cracks between different cracks converge, and the connection force of the rock-soil layer is further weakened, eventually leading to the danger of rock-soil layer falling or landslide, causing great harm to the environment. In order to study the generation process of internal cracks of rock-soil layer after water immersion, soil layer water immersion experiment will be carried out, and the generation and development of rock-soil layer gap and crack under the interaction of water and rock-soil layer are tracked, and the evolution law of internal damage of rock-soil layer is revealed.

[0003] In the Chinese patent with patent application number CN200910036622.9, only the triaxial universal support is matched with the camera for final detection, although the single crack can be tracked and identified, but the camera is always in a horizontal state and cannot be adjusted at an angle, so that the control freedom is limited, and the observation system has a simple stage structure, which is only horizontally placed, so that when the control group or the rock-soil sample needs to be adjusted, additional operation assembly and angle adjustment by additional supporting equipment are required, so that when multiple experiments are carried out, the operation process needs to be further optimized. SUMMARY

[0004] In view of the defects of the prior art, the present application provides a triaxial adjustable microscopic observation system for geotechnical softening meso-mechanical test, which has the advantages of facilitating multiple control experiments, facilitating diversified control of rock-soil samples, and improving the accuracy and diversity of rock-soil internal crack evolution.

[0005] To achieve the above object, the present application provides the following technical scheme: a triaxial adjustable microscopic observation system for geotechnical softening meso-mechanical test, comprising a bottom plate, a video recording mechanism and a sample carrying assembly are arranged on the top of the bottom plate, a water supply controller is connected to the sample carrying assembly, a control panel and a control hub are further arranged on the top of the bottom plate, and the control panel and the control hub are electrically connected with the water supply controller and the video recording mechanism; the control panel and the control hub are the control part and the data processing and storage part of the system, used for controlling the mutual cooperation of the video recording mechanism and the sample carrying assembly, and realizing the observation of the change of rock-soil cracks.

[0006] Further preferably, the sample support assembly comprises a support rod fixedly connected to the top of the base plate, a connecting head fixedly connected to the bottom of the support rod, an installation rod threadedly connected to the bottom of the connecting head, an atomizing head fixedly connected to the bottom of the installation rod, a receiving block threadedly connected to the bottom end of the installation rod, a support ring fixedly connected to the outside of the receiving block, a sample plate rotatably connected to the inside of the support ring, and a water permeation ring fixedly connected to the top of the sample plate. The bottom of the receiving block is threadedly connected to a connecting block, and the outside of the connecting block is fixedly connected to a receiving hopper. The rock and soil sample layer is placed inside the water permeation ring, and the deflection degree of the sample plate is controlled to realize the crack evolution law of the sample rock and soil layer in the horizontal state and different inclined angles. The atomizing head and the water permeation ring facilitate the realization of water meeting and water immersion state of the top spray, and further improve the diversity of the control experiment.

[0007] Further preferably, the connecting head is provided with at least three groups, and the structures of the connecting heads provided at the bottom are the same. By providing multiple connecting heads, the tracking observation of the crack change of the soil sample can be performed in sequence at one time, avoiding the trouble of multiple assembly and control adjustment.

[0008] Further preferably, the atomizing head is provided with a ring structure, a spray rod is fixedly connected to the inside of the ring structure, and a water supply control valve and a control valve two are provided between the spray rod and the water supply controller. The ring structure is located directly above the sample plate, and the inner diameter of the ring structure and the diameter of the sample plate are adapted.

[0009] Further preferably, the sample plate is provided with uniform mesh holes, the receiving block and the installation rod are provided with communication holes, and a connecting water supply channel and a control valve two are provided between the communication holes and the water supply controller. The water permeation ring and the communication holes of the receiving block are communicated, and the water permeation holes of the water permeation ring are provided at the inner side end of the water permeation ring.

[0010] Further preferably, the sample plate and the support ring are interference fit, the sample plate and the support ring are provided with rotation damping, an angle detector is provided outside the connecting shaft of the sample plate and the support ring, and the angle detector is signal connected to the control hub. The stability of the adjustment angle of the sample plate is ensured, the angle change during the observation process is avoided, and the observation result is affected. At the same time, the deflection angle of the sample plate is observed through the angle detector, the deflection angle of the sample plate is directly output, and the deflection angle of the sample plate is directly received by the control hub.

[0011] Further preferably, the receiving hopper is located directly below the support ring, and the inner diameter of the receiving hopper is greater than the outer diameter of the support ring. The rock and soil sample broken due to crack generation is received by the receiving hopper, the rock and soil sample and sewage pollute the experiment table, the cleanness is improved, and the cleaning and maintenance are facilitated.

[0012] Further preferably, the video recording mechanism comprises vertical guide rods fixedly connected to the top of the base plate, the vertical guide rods are provided in two groups, the two groups of vertical guide rods are arranged on the two sides of the top of the base plate, the outer portions of the two groups of vertical guide rods are slidably connected with vertical sliding blocks, the vertical sliding blocks are fixedly connected with a horizontal guide rod, the outer portion of the horizontal guide rod is slidably connected with a horizontal sliding block, the bottom of the horizontal sliding block is slidably connected with front and rear sliding rods, the ends of the front and rear sliding rods are fixedly connected with a deflection block, and the outer portion of the deflection block is fixedly connected with the camera.

[0013] Further preferably, the vertical guide rods and the vertical sliding blocks, the horizontal guide rod and the horizontal sliding block, and the horizontal sliding block and the front and rear sliding rods are all automatic linear guides, which are controlled and started by the control panel and the control hub.

[0014] Further preferably, the deflection block comprises a fixed end and a deflection shaft end, the fixed end is fixedly connected to the end of the front and rear sliding rod, the deflection shaft end is provided with a torque motor together with the fixed end, the torque motor is used to control the rotation of the deflection shaft end, the camera is fixedly connected to the outer portion of the deflection shaft end, and the torque motor is controlled and started by the control panel and the control hub.

[0015] Further preferably, the inner portion of the control panel and the control hub comprises a human-computer interaction module, a driving output module, a video acquisition module, a crack identification module, a crack tracking module, a focusing adjustment module, a water flow control module, an offset angle acquisition module, and a data storage module, wherein:

[0016] The human-computer interaction module is used to input control instructions through the control panel;

[0017] The driving output module is used to receive the input instructions of the human-computer interaction module, automatically generate control instructions of the automatic linear guides and the deflection block according to the input instructions, and control the actual position and the deflection angle of the camera;

[0018] The video acquisition module is used to acquire camera pictures through the camera;

[0019] The crack identification module is used to identify sample crack information;

[0020] The crack tracking module is used to track the crack direction;

[0021] The focusing adjustment module is used to generate camera position adjustment and control data information based on the crack direction;

[0022] The water flow control module is used to determine the water flow output form based on the human-computer interaction module;

[0023] The offset angle acquisition module is used to acquire the deflection angle information of the object plate;

[0024] The data storage module is used to store camera acquisition data information, water flow control module output information, and offset angle acquisition module acquisition information.

[0025] Beneficial effects:

[0026] 1. This triaxial adjustable microscopic observation system for the micromechanical test of soil softening utilizes an interference fit between a loading plate and a support ring. Rotational damping is incorporated into both the loading plate and the support ring. An angle detector is externally mounted on the connecting shaft between the loading plate and the support ring, and the angle detector is signal-connected to the control center. This ensures the stability of the loading plate's angle adjustment, preventing angle changes during observation that could affect the results. Simultaneously, the angle detector allows for the observation of the loading plate's deflection angle, facilitating direct output of the deflection angle. The control center can directly receive the deflection angle, enabling observation of crack formation in soil samples when exposed to water while tilted.

[0027] 2. The triaxial adjustable microscopic observation system for the micromechanical test of soil softening, by setting multiple sets of mounting rods, facilitates the control of the atomizing head and the water-permeable ring to wet the soil sample in different ways, including the water-contact process of spraying from top to bottom and the water-immersion process from the bottom. It also facilitates the control of the support plate to support the soil sample at different angles, thereby further ensuring the ease of use of the observation system. It allows for the setting of multiple sets of samples at once and the convenience of conducting experiments sequentially, avoiding the trouble of repeated disassembly and assembly, improving experimental efficiency, and further improving the precision of sample control on the basis of improving the accuracy of imaging, thus ensuring the experimental results.

[0028] 3. The triaxial adjustable microscopic observation system for the micromechanical test of soil and rock softening, by setting up a receiving hopper, which is located directly below the support ring and whose inner diameter is larger than the outer diameter of the support ring, can receive soil and rock samples that crack when cracks occur, thus avoiding soil and rock samples and sewage from contaminating the test bench, improving cleanliness and facilitating cleaning and maintenance.

[0029] 4. The triaxial adjustable microscopic observation system for the micromechanical test of soil and rock softening displays the video information of the soil and rock samples collected by the camera through the control panel. When the camera determines that cracks have appeared on the surface of the soil and rock samples, the camera adjusts its focus to further lock the crack characteristics. At the same time, it monitors the occurrence or changes of cracks and feeds the crack change information back to the control center. The control center fine-tunes the position and angle of the camera to further ensure the accuracy of crack information observation. Moreover, the automatic locking and imaging of crack information through multiple degrees of freedom effectively ensures the accuracy of crack information extraction, which is conducive to the accuracy and effectiveness of summarizing the crack change law of clean soil and rock layers when exposed to water.

[0030] 5. The triaxial adjustable microscopic observation system for the micromechanical test of soil softening realizes automatic control of the camera through the control panel and control center, realizes automatic adjustment of the camera during observation and recording, reduces the difficulty of operation, ensures the accuracy of the image, and improves the ease of use of the device. Attached Figure Description

[0031] Figure 1 It is the whole structure connection diagram of the structure of the application;

[0032] Figure 2 It is the schematic diagram of the video recording mechanism of the structure of the application;

[0033] Figure 3 It is the schematic diagram of the object carrying assembly of the structure of the application;

[0034] Figure 4 It is the connection schematic diagram of the mounting rod, atomizing head, support ring, object carrying plate and receiving hopper of the structure of the application;

[0035] Figure 5 It is the schematic diagram of the control system of the application.

[0036] In the figure: 1, bottom plate; 2, video recording mechanism; 21, vertical guide rod; 22, vertical sliding block; 23, horizontal guide rod; 24, horizontal sliding block; 25, front and rear sliding rod; 26, deflection block; 27, camera; 3, object carrying assembly; 31, support rod; 32, connecting head; 33, mounting rod; 34, atomizing head; 35, receiving block; 36, support ring; 37, object carrying plate; 38, water permeation ring; 39, connecting block; 310, receiving hopper; 4, water supply controller; 5, control panel; 6, control hub. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0038] Embodiment one

[0039] Please refer to Figures 1-2 A triaxial adjustable microscopic observation system for geotechnical softening micromechanics test, comprising a bottom plate 1, a video recording mechanism 2 and an object carrying assembly 3 are arranged on the top of the bottom plate 1, a water supply controller 4 is connected to the object carrying assembly 3, a control panel 5 and a control hub 6 are arranged on the top of the bottom plate 1, and the control panel 5 and the control hub 6 are electrically connected with the water supply controller 4 and the video recording mechanism 2; the control panel 5 and the control hub 6 are the control part and the data processing and storage part of the system, used for controlling the mutual cooperation of the video recording mechanism 2 and the object carrying assembly 3, and realizing the observation of the change of geotechnical cracks.

[0040] In the embodiment, the video recording mechanism 2 comprises vertical guide rods 21 fixedly connected to the top of the base plate 1, the vertical guide rods 21 are provided in two groups, the two groups of vertical guide rods 21 are arranged on the two sides of the top of the base plate 1, the outer portions of the two groups of vertical guide rods 21 are slidably connected with vertical sliding blocks 22, the vertical sliding blocks 22 are fixedly connected with a horizontal guide rod 23, the outer portion of the horizontal guide rod 23 is slidably connected with a horizontal sliding block 24, the bottom of the horizontal sliding block 24 is slidably connected with front and rear sliding rods 25, the ends of the front and rear sliding rods 25 are fixedly connected with deflection blocks 26, and the outer portions of the deflection blocks 26 are fixedly connected with cameras 27.

[0041] In the embodiment, the vertical guide rods 21, the vertical sliding blocks 22, the horizontal guide rod 23, the horizontal sliding block 24, and the front and rear sliding rods 25 are all automatic linear guide rails, which are controlled and started by the control panel 5 and the control hub 6. The control panel 5 and the control hub 6 and the brake perform the specified control, and meanwhile, the cameras 27 perform position feedback according to the structural crack change information. The control panel 5 and the control hub 6 adjust and control the positions of the cameras 27 based on the feedback information, so as to control the cameras 27 to always be in the best camera shooting position and camera shooting angle.

[0042] In the embodiment, the deflection blocks 26 comprise fixed ends and deflection shaft ends, the fixed ends are fixedly connected to the ends of the front and rear sliding rods 25, the deflection shaft ends are provided with torque motors, the torque motors are used to control the rotation of the deflection shaft ends, the cameras 27 are fixedly connected to the outer portions of the deflection shaft ends, and the torque motors are controlled and started by the control panel 5 and the control hub 6. The torque motors are used to realize the deflection angle control of the cameras 27, increase the control degrees of freedom of the cameras 27, and further ensure the camera shooting accuracy.

[0043] In use, the rock and soil sample is fixed by the sample loading assembly 3, and the rock and soil sample is rained by the water supply controller 4. The control panel 5 and the control hub 6 are set with video recording execution instructions, the control hub 6 controls the vertical sliding blocks 22, the horizontal sliding block 24, and the front and rear sliding rods 25 of the video recording mechanism 2 to move, controls the angle deflection of the deflection blocks 26, and prepositions the cameras 27, so that the cameras 27 are in the initial state and face the rock and soil sample.

[0044] The cameras 27 display the collected video information of the rock and soil sample through the control panel 5. When the cameras 27 determine that cracks are generated on the surface of the rock and soil sample, the cameras 27 are adjusted in focus, further lock the crack features, and further observe the crack generation or change situation. The crack change information is fed back to the control hub 6, the control hub 6 finely adjusts the position and angle of the cameras 27, further ensures the accuracy of crack information observation, and effectively ensures the accuracy of crack information extraction through the automatic locking and camera shooting of the crack information in multiple degrees of freedom, so as to facilitate the accuracy and effectiveness of the induction of the water crack change rule of the neat rock and soil layer.

[0045] Embodiment two

[0046] Referring to Figures 1-4 Further based on the embodiment one, a triaxial adjustable microscopic observation system for geotechnical softening micromechanics test, comprising a bottom plate 1, a video recording mechanism 2 and a sample loading assembly 3 are arranged on the top of the bottom plate 1, the sample loading assembly 3 is connected with a water supply controller 4, a control panel 5 and a control hub 6 are arranged on the top of the bottom plate 1, and the control panel 5 and the control hub 6 are electrically connected with the water supply controller 4 and the video recording mechanism 2.

[0047] The sample loading assembly 3 comprises a support rod 31 fixedly connected to the top of the bottom plate 1, a connecting head 32 fixedly connected to the bottom of the support rod 31, an installation rod 33 threadedly connected to the bottom of the connecting head 32, an atomizing head 34 fixedly connected to the bottom of the installation rod 33, a receiving block 35 threadedly connected to the bottom end of the installation rod 33, a support ring 36 fixedly connected to the outside of the receiving block 35, a sample plate 37 rotatably connected to the inside of the support ring 36, a water permeation ring 38 fixedly connected to the top of the sample plate 37, a connecting block 39 threadedly connected to the bottom of the receiving block 35, and a receiving hopper 310 fixedly connected to the outside of the connecting block 39. The geotechnical sample layer is placed in the inside of the water permeation ring 38, and the deflection degree of the sample plate 37 is controlled at the same time, so as to realize the crack evolution law of the sample geotechnical layer in the horizontal state and different inclined angles, and the water meeting state of top spray and bottom water permeation immersion is realized through the atomizing head 34 and the water permeation ring 38, thereby further improving the diversity of the control experiment.

[0048] In the embodiment, at least three groups of connecting heads 32 are arranged, and the structures arranged at the bottom of the connecting heads 32 are the same. By arranging multiple groups of connecting heads 32, the tracking observation of the crack change of the soil sample can be sequentially performed at one time, and the trouble of multiple assembly and control adjustment is avoided.

[0049] In the embodiment, the atomizing head 34 is arranged in a ring structure, a spray rod is fixedly connected to the inside of the ring structure, a water supply pipe and a control valve one are arranged between the spray rod and the water supply controller 4, the ring structure is located directly above the sample plate 37, and the inner diameter of the ring structure is adapted to the diameter of the sample plate 37.

[0050] Further preferably, the sample plate 37 is provided with uniform mesh holes, the receiving block 35 and the installation rod 33 are provided with a communication hole in the inside, a connecting water supply channel and a control valve two are arranged between the communication hole and the water supply controller 4, the water permeation ring 38 is communicated with the communication hole of the receiving block 35, and the water permeation holes of the water permeation ring 38 are arranged at the inside end of the water permeation ring 38.

[0051] In the embodiment, the support plate 37 and the support ring 36 are in interference fit, the support plate 37 and the support ring 36 are provided with rotation damping, the connecting rotation shaft of the support plate 37 and the support ring 36 is externally provided with an angle detector, and the angle detector is in signal connection with the control center 6. The stability of the adjustment angle of the support plate 37 is ensured, the angle change during the observation process is avoided, and thus the observation result is affected. Meanwhile, the deflection angle of the support plate 37 is observed through the angle detector, the deflection angle of the support plate 37 is directly output, and the control center 6 directly receives the deflection angle of the support plate 37.

[0052] In the embodiment, the receiving hopper 310 is located directly below the support ring 36, and the inner diameter of the receiving hopper 310 is greater than the outer diameter of the support ring 36. The rock-soil sample that is broken due to cracks is received by the receiving hopper 310, the rock-soil sample and sewage are prevented from polluting the experiment table, the cleanness is improved, and the cleaning and maintenance are facilitated.

[0053] Based on the first embodiment, the difference is that the rock-soil sample is placed and meets water, and the process includes:

[0054] In use of the sample support assembly 3, a plurality of mounting rods 33 are fixed through threaded connection and the connecting head 32, the number of the mounting rods 33 is determined according to actual comparison, and the mounting rods 33 are sequentially mounted from left to right, and the water pipe between the mounting rods 33 and the water supply controller 4 is not shown in the figure.

[0055] Before the rock-soil sample is placed, the connecting block 39 is installed at the bottom of the receiving block 35 through threaded connection, the receiving hopper 310 is located directly below the support ring 36, then the rock-soil sample is placed on the top of the support plate 37, and the rock-soil sample is located on the top of the water permeable ring 38, after the placement is completed, the receiving block 35 is sequentially installed at the bottom of the mounting rod 33, and the support plate 37 is adjusted according to actual needs, so that the support plate 37 is deflected by a certain angle inside the support ring 36, and the change of cracks of the rock-soil sample that meets water in the inclined state is observed.

[0056] During the test, the angle detector records the deflection angle of the support plate 37 and transmits the deflection angle information to the control center 6. During the test, the atomizing head 34 and the water permeable ring 38 are controlled to wet the rock-soil sample in different ways, including a spraying wetting process from top to bottom and a bottom immersion wetting process, so as to further ensure the convenience of use of the observation system, facilitate the setting of multiple samples at a time, and sequentially perform experiments, avoid the trouble of repeated disassembly and assembly, improve the experimental efficiency, further improve the precision of sample control on the basis of improving the camera accuracy, and ensure the experimental effect.

[0057] Embodiment three

[0058] Please refer to Figure 5Further based on the embodiment two, a triaxial adjustable microscopic observation system for geotechnical softening micromechanics test, comprising a base plate 1, a video recording mechanism 2 and a sample loading assembly 3 are arranged on the top of the base plate 1, the sample loading assembly 3 is connected with a water supply controller 4, a control panel 5 and a control hub 6 are arranged on the top of the base plate 1, and the control panel 5 and the control hub 6 are electrically connected with the water supply controller 4 and the video recording mechanism 2.

[0059] The inside of the control panel 5 and the control hub 6 comprises a human-computer interaction module, a driving output module, a video acquisition module, a crack identification module, a crack tracking module, a focusing adjustment module, a water flow control module, an angle acquisition module and a data storage module, wherein:

[0060] The human-computer interaction module is used for inputting control instructions through the control panel 5;

[0061] The driving output module is used for receiving input instructions of the human-computer interaction module, automatically generating control instructions of the automatic linear guide rail and the deflection block according to the input instructions, and controlling the actual position and deflection angle of the camera 27;

[0062] The video acquisition module is used for acquiring camera pictures through the camera 27;

[0063] The crack identification module is used for identifying sample crack information;

[0064] The crack tracking module is used for tracking crack direction;

[0065] The focusing adjustment module is used for generating camera 27 position adjustment and control data information based on the crack direction;

[0066] The water flow control module is used for determining water flow output form based on the human-computer interaction module;

[0067] The angle acquisition module is used for acquiring deflection angle information of the sample plate 37;

[0068] The data storage module is used for storing camera 27 acquisition data information, water flow control module output information and angle acquisition module acquisition information.

[0069] The process comprises:

[0070] 1.1) output control instructions through the human-computer interaction module, the driving output module receives the control instructions, adjusts the video recording mechanism 2 according to the control instructions, and controls the initial position of the camera 27, so that the camera 27 faces the geotechnical sample;

[0071] 1.2) output control instructions through the human-computer interaction module, the water flow control module determines the water mode of the geotechnical sample based on the output instructions, including the atomizing head 34 water spray wetting and the water outlet ring 38 water immersion;

[0072] 1.3) The angle collection module is connected with the angle detector, and is used for receiving the angle deflection information and transmitting the angle deflection information to the data storage module;

[0073] 2) During the experiment, the video collection module collects real-time image information of the rock-soil sample through the camera 27, and transmits the image information to the data storage module and the control panel 5, and displays the collected image information of the rock-soil sample through the control panel 5;

[0074] 3) The crack identification module scans the collected image information of the rock-soil sample, determines the surface crack information of the rock-soil sample, locks and identifies the determined crack state, and determines the crack range and the crack state;

[0075] 4) The crack tracking module receives the crack information identified by the crack identification module, determines the change process and position change of the crack information, determines the adjustment change control instruction of the camera 27 based on the crack change information, and transmits the change control instruction to the driving output module;

[0076] 5) The driving output module further adjusts the position of the camera 27 based on the adjustment control instruction, and continuously locks the crack change information;

[0077] 6) The focusing adjustment module adjusts the focal length according to the collected sample soil layer image information of the video collection module and the locked crack change state information of the crack identification module, and ensures the definition of the crack image information recording.

[0078] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A triaxial adjustable microscopic observation system for geotechnical softening micromechanics tests, comprising a base plate (1), characterized in that: The top of the bottom plate (1) is provided with a video recording mechanism (2) and a loading assembly (3), the loading assembly (3) is connected with a water supply controller (4), and the top of the bottom plate (1) is also provided with a control panel (5) and a control hub (6), and the control panel (5) and the control hub (6) are electrically connected with the water supply controller (4) and the video recording mechanism (2); The loading assembly (3) comprises a supporting rod (31) fixedly connected to the top of the bottom plate (1), a connecting head (32) fixedly connected to the bottom of the supporting rod (31), an installation rod (33) threadedly connected to the bottom of the connecting head (32), an atomizing head (34) fixedly connected to the bottom of the installation rod (33), a receiving block (35) threadedly connected to the bottom end of the installation rod (33), a supporting ring (36) fixedly connected to the outside of the receiving block (35), a loading plate (37) rotatably connected to the inside of the supporting ring (36), a water permeation ring (38) fixedly connected to the top of the loading plate (37), and a connecting block (39) threadedly connected to the bottom of the receiving block (35), wherein the outside of the connecting block (39) is fixedly connected with a receiving hopper (310). The connecting head (32) is provided with at least three groups, and the structure arranged at the bottom of the connecting head (32) is the same. The atomizing head (34) is provided with an annular structure, a spray rod is fixedly connected to the inside of the annular structure, a water supply pipe and a control valve one are arranged between the spray rod and the water supply controller (4), the annular structure is located directly above the loading plate (37), and the inner diameter of the annular structure is matched with the diameter of the loading plate (37). The loading plate (37) is provided with uniform mesh holes, the inside of the receiving block (35) and the installation rod (33) is provided with a communication hole, a connecting water supply channel and a control valve two are arranged between the communication hole and the water supply controller (4), the water permeation ring (38) is in communication with the communication hole of the receiving block (35), and the water permeation holes of the water permeation ring (38) are arranged on the inner side of the water permeation ring (38). The loading plate (37) and the supporting ring (36) are in interference fit, the loading plate (37) and the supporting ring (36) are provided with rotation damping, an angle detector is arranged on the outside of the connecting shaft of the loading plate (37) and the supporting ring (36), and the angle detector is signal connected with the control hub (6). The video recording mechanism (2) comprises vertical guide rods (21) fixedly connected to the top of the bottom plate (1), the vertical guide rods (21) are provided with two groups, the two groups of vertical guide rods (21) are arranged on the two sides of the top of the bottom plate (1), the outside of the two groups of vertical guide rods (21) is slidably connected with vertical sliding blocks (22), the two groups of vertical sliding blocks (22) are fixedly connected with a horizontal guide rod (23), the outside of the horizontal guide rod (23) is slidably connected with a horizontal sliding block (24), the bottom of the horizontal sliding block (24) is slidably connected with front and rear sliding rods (25), the ends of the front and rear sliding rods (25) are fixedly connected with deflection blocks (26), and the outside of the deflection blocks (26) is fixedly connected with cameras (27). 2.The triaxial adjustable microscopic observation system for geotechnical softening micromechanics test according to claim 1, characterized in that: The receiving hopper (310) is located directly below the supporting ring (36), and the inner diameter of the receiving hopper (310) is greater than the outer diameter of the supporting ring (36).

3. The triaxial adjustable microscopic observation system for geotechnical softening micromechanics test according to claim 1, characterized in that: The vertical guide rod (21) and vertical slider (22), the transverse guide rod (23) and the transverse slider (24), the transverse slider (24) and the front and rear slide rod (25) are all automatic linear guide rails, which are controlled and started by the control panel (5) and the control hub (6).

4. The triaxial adjustable microscopic observation system for geotechnical softening micromechanics test according to claim 3, characterized in that: The deflection block (26) comprises a fixed end and a deflection shaft end, the fixed end is fixedly connected to the end of the front and rear slide rod (25), the deflection shaft end is provided with a torque motor, the torque motor is used for controlling the rotation of the deflection shaft end, the camera (27) is fixedly connected to the outside of the deflection shaft end, and the torque motor is controlled and started by the control panel (5) and the control hub (6).

5. The triaxial adjustable microscopic observation system for geotechnical softening micromechanics test according to claim 4, characterized in that: The inside of the control panel (5) and the control hub (6) comprises a man-machine interaction module, a driving output module, a video acquisition module, a crack identification module, a crack tracking module, a focusing adjustment module, a water flow control module, an offset angle acquisition module and a data storage module, wherein: The man-machine interaction module is used for inputting control instructions through the control panel (5); The driving output module is used for receiving the input instructions of the man-machine interaction module, automatically generating control instructions of the automatic linear guide rail and the deflection block according to the input instructions, controlling the actual position and the deflection angle of the camera (27); The video acquisition module is used for acquiring camera pictures through the camera (27); The crack identification module is used for identifying sample crack information; The crack tracking module is used for tracking the crack direction; The focusing adjustment module is used for generating camera (27) position adjustment and control data information based on the crack direction; The water flow control module is used for determining the water flow output form based on the man-machine interaction module; The offset angle acquisition module is used for acquiring the deflection angle information of the sample plate (37); The data storage module is used for storing the camera (27) acquisition data information, the water flow control module output information and the offset angle acquisition module acquisition information.

Images