Multi-source monitoring data fused rock-like double-hole test piece lateral confinement compression test device

Abstract

The utility model discloses a multi-source monitoring data fused rock-like mass double-hole test piece lateral confinement compression test device, which relates to the technical field of rock mass engineering tests, and comprises a visual lateral confinement box used for placing and fixing a tested rock mass and provided with double holes in the side wall; the pressure-bearing cushion block is placed at the top of the test rock mass and is used for bearing pressure; the loading equipment is used for applying a downward load to the pressed cushion block; the telescopic mechanical arms are mounted on the visual lateral confinement box in a hinged mode, and the telescopic mechanical arms are mounted on one side of the visual lateral confinement box; the positioning bracket is fixedly mounted on one side of the visual lateral confinement box; the data acquisition device comprises a laser displacement meter and a camera, the laser displacement meter is installed on the telescopic mechanical arm, the camera is installed on the positioning support, and the laser displacement meter and the camera are both arranged towards the visual lateral confinement box. And monitoring and measurement of multivariate data of lateral confinement compression of the rock-like double-hole test piece cannot be effectively synchronized.

Description

Technical Field

[0001] The utility model belongs to the technical field of rock mass engineering tests, and more specifically relates to a rock mass double-hole specimen confined compression test device for multi-source monitoring data fusion. Background Art

[0002] With the development of the economy and society, underground space, tunnels, water conservancy and hydropower projects are being built on a large scale in mountainous areas. Due to the limitations of the terrain and their functional use, many underground caverns are constructed using a dual-hole parallel structure.

[0003] Conducting rock mass mechanics tests on parallel underground caverns is fundamental to studying the failure characteristics of surrounding rock and optimizing construction parameters. Compression failure tests are an effective method for revealing rock mass mechanical properties and addressing deformation and failure issues in cavern engineering. Therefore, conducting confined compression tests on rock-like twin-tunnel specimens to simulate and study the physical and mechanical properties and instability failure modes of the surrounding rock of parallel underground caverns has important theoretical and practical significance.

[0004] However, existing confined compression devices for rock-like double-hole specimens have significant shortcomings: low integration and difficulty synchronizing confined compression mechanical testing with multi-source data monitoring and measurement. This results in low testing and monitoring efficiency, and an inability to precisely control the specimen compression process and measurements simultaneously, severely impacting the accuracy of test results and the depth of research. Utility Model Content

[0005] In view of the shortcomings of the existing technology, the purpose of the present invention is to provide a lateral confinement compression test device for rock-like double-hole specimens with multi-source monitoring data fusion, which effectively solves the problem that the current lateral confinement compression device has low integration and the multi-data monitoring and measurement of the lateral confinement compression of rock-like double-hole specimens cannot be effectively synchronized.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] A lateral confinement compression test device for a rock-like double-hole specimen with multi-source monitoring data fusion comprises: a visual side confinement box for placing and fixing the test rock mass, with double holes opened on the side wall; a compression pad placed on the top of the test rock mass for bearing pressure; a loading device for applying a downward load to the compression pad; a telescopic mechanical arm hingedly mounted on the visual side confinement box, with at least two arms mounted on one side of the visual side confinement box; a positioning bracket fixedly mounted on one side of the visual side confinement box; a data acquisition device comprising a laser displacement meter and a camera, the laser displacement meter being mounted on the telescopic mechanical arm, the camera being mounted on the positioning bracket, and both the laser displacement meter and the camera being arranged facing the visual side confinement box.

[0008] The advantages of this solution are at least as follows: by integrating the visual limit measurement box, telescopic mechanical arm, positioning bracket and data acquisition device, the integration and utilization rate of the lateral confinement compression device for rock mass double-hole specimens are improved, making the assembly and disassembly process convenient and rapid. At the same time, a single lateral confinement compression device in this solution can be used to carry out compression-monitoring simultaneous testing for double-hole tunnel conditions with various positional relationships and various specimen monitoring and measurement requirements, thereby improving the utilization efficiency and adaptability of the lateral confinement compression device and reducing the test cost of lateral confinement compression testing for rock mass double-hole specimens.

[0009] At the same time, the confined compression test device in this scheme realizes the visual real-time monitoring of the confined compression process of the rock-like test piece, and can simultaneously obtain the displacement of any section inside the dual chamber and the overall deformation of the external surrounding rock, further improving the data diversity and effectiveness during the compression test of the rock-like specimen, overcoming the deficiency of the traditional confined compression mechanical test and multivariate data monitoring measurement that cannot be effectively synchronized, and contributing to the in-depth study of the instability mode and failure mechanism of the parallel caverns of underground rock mass under complex conditions.

[0010] The utility model is further configured as follows: the visual side limit box comprises: two opening panels, a base, two side panels, a test piece holding bottom plate, two transparent plates, a pressure steel pad and a clamping assembly for clamping the test rock mass;

[0011] The two side panels are symmetrically arranged at both ends of the top surface of the base and are fixedly connected to the base;

[0012] The two opening panels are detachably mounted on the side panels and the two side walls of the base;

[0013] The test piece holding bottom plate is fixedly mounted on the upper surface of the base and is located between the two side plates;

[0014] The two opening panels are symmetrically provided with card slots, and the two transparent plates are installed on the two opening panels; the clamping assembly is installed on the two side panels.

[0015] The advantages of this solution are at least as follows: the perforated panel can be detachably mounted on the side panel and the base, facilitating the installation, removal and replacement of the transparent plate; the transparent plate is mounted on the perforated panel via a slot, and the experimental range can be expanded (e.g., single hole, multiple holes, and irregular-shaped holes) by customizing transparent plates with different apertures / hole types; at the same time, the combination of the perforated panel and the transparent plate enables unobstructed panoramic observation of the hole circumference destruction process; the test rock mass is clamped and fixed by a clamping assembly, so that the test rock mass is firmly fixed inside the visual side limit box, thereby preventing the test rock mass from sliding or tilting when the loading equipment applies a downward load to the compression pad.

[0016] The utility model is further configured as follows: the clamping assembly includes: a movable plate, two adjusting screws and a fixed nut, the adjusting screw is fixedly connected to the fixed nut, the adjusting screw is rotatably mounted on the movable plate and is threadedly connected to the side plate;

[0017] The clamping components are provided in at least two groups, and the two groups of clamping components are arranged on the two side plates opposite to each other.

[0018] The advantages of this solution are at least that: by relatively arranging at least two sets of clamping assemblies on the two side plates, in conjunction with the double adjusting screw structure of each set, a symmetrical and uniform clamping force can be applied, which can effectively prevent the test rock mass from being deformed or offset by force on one side, and the adjusting screw is threadedly connected to the side plate and rotatably mounted on the movable plate. The position of the movable plate can be fine-tuned by rotating the fixing nut and the adjusting screw, thereby preventing the test rock mass from sliding or tilting during the test.

[0019] The utility model is further configured as follows: a limiting plate is sleeved on the outer periphery of the adjusting screw, and one end of the limiting plate is tightly attached to the side wall of the side plate.

[0020] The advantage of this solution is at least that the limiting piece can increase the stability of the adjusting screw during rotation, avoid shaking during rotation, and make the adjusting screw more stable during rotation.

[0021] The utility model is further configured as follows: the telescopic mechanical arm comprises: a fixed support, a proximal straight arm, a distal straight arm, a round rod holder, a vertical round rod, a universal ball head device, a control rod holder and a horizontal control rod;

[0022] The proximal straight arm is hinged on the fixed support and is detachably mounted on the visual side limit box through the fixed support;

[0023] The distal straight arm is hinged to the proximal straight arm; the round rod holder is fixed to one end of the distal straight arm;

[0024] The vertical round rod is fixed to the distal straight arm through a round rod fixer and a first fixing bolt;

[0025] One end of the universal ball joint device is fixed to the vertical round rod, and the other end is fixed to the control rod holder;

[0026] The horizontal control rod is fixed on the vertical round rod through a control rod fixer, a second fixing bolt and a universal ball head device.

[0027] The advantages of this solution are at least that: the proximal straight arm can be detachably mounted on the visual side limit box through a fixed support, so that the telescopic robotic arm can be quickly assembled and disassembled, and is easy to transport, store and maintain; the universal ball head device connects the vertical round rod and the horizontal control rod, providing multi-angle and multi-degree-of-freedom adjustment capabilities, and can adapt to different operating environments and posture adjustment requirements; the proximal straight arm and the distal straight arm are hingedly connected, which can achieve a certain degree of telescoping or folding, and is suitable for different working radius or space restriction scenarios; the round rod fixer cooperates with the first fixing bolt, and the control rod fixer cooperates with the second fixing bolt to ensure that each connection node has good fixing strength to prevent loosening or displacement during operation.

[0028] The utility model is further configured as follows: the horizontal control rod is provided with a scale value, and a mounting head is provided at one end of the horizontal control rod, and the laser displacement meter is mounted on the mounting head and faces the visual side limit box.

[0029] The advantages of this solution are at least that: setting the scale value on the horizontal control rod can realize visual adjustment of the position, which is convenient for precise control of the horizontal movement distance of the robotic arm; the mounting head is used to fix the laser displacement meter, so that the laser displacement meter is integrated with the robotic arm structure, which has a compact structure and is easy to install.

[0030] The utility model is further configured as follows: the positioning bracket includes: two fixed brackets, a translation bracket, a mounting platform, two second sliding seats and a lifting assembly;

[0031] The two fixing brackets are both L-shaped in cross section and can be detachably mounted on a side wall of the visual side limit box;

[0032] The translation bracket is mounted on the two fixed brackets via the two second sliding seats, and the two second sliding seats are slidably connected to the two fixed brackets;

[0033] The mounting platform is mounted on the top of the lifting assembly, and the camera is fixedly mounted on the mounting platform and faces the visual side limit box.

[0034] The advantages of this solution are at least that: the two fixed brackets are detachably mounted on the visual side limit box, so that the positioning bracket can be quickly assembled and disassembled, which is convenient for subsequent transportation and maintenance; at the same time, the translation bracket is slidably mounted on the fixed bracket through the second sliding seat, which facilitates the displacement adjustment between the camera on the lifting assembly and the visual side limit box, and the lifting assembly can adjust the height of the camera on the lifting assembly, making the fixed bracket more flexible and applicable.

[0035] The utility model is further configured as follows: the lifting assembly includes: a first sliding seat, a support seat and a lifting bracket, the lifting bracket is slidably installed inside the support seat, the mounting platform is fixed at one end of the lifting bracket, the support seat is installed on the translation bracket through the first sliding seat, and the first sliding seat is slidably connected to the translation bracket.

[0036] The advantages of this solution are at least that: the lifting component is installed on the translation bracket through the first sliding seat, so that the camera on the lifting component can move horizontally on the translation bracket, further improving the flexibility and applicability of the fixed bracket, and the camera on the lifting component can be moved horizontally.

[0037] The present invention is further configured as follows: locking pieces are provided on the first sliding seat, the second sliding seat and the supporting seat.

[0038] The advantages of this solution are at least that: locking members are provided on the first sliding seat, the second sliding seat and the support seat, so that the first sliding seat and the second sliding seat can be fixed after the positions are adjusted, and the position of the lifting bracket can be fixed after the adjustment, thereby avoiding movement during use and ensuring the positioning accuracy. At the same time, the locking members can also be used to quickly unlock for fine-tuning and re-locking, making adjustment more convenient.

[0039] The present invention is further configured such that: the cross sections of the first sliding seat and the second sliding seat are both in an inverted U shape.

[0040] In summary, the present invention has at least the following advantages:

[0041] 1. By integrating the visual limit measurement box, telescopic robotic arm, positioning bracket, and data acquisition device, the integration and utilization rate of the lateral confinement compression device for rock mass dual-hole specimens are improved, making the assembly and disassembly process convenient and rapid. At the same time, the single lateral confinement compression device in this solution can be used to carry out compression-monitoring simultaneous testing for dual-hole tunnel conditions with various positional relationships and various specimen monitoring and measurement requirements, improving the efficiency and adaptability of the lateral confinement compression device and reducing the test cost of lateral confinement compression testing for rock mass dual-hole specimens.

[0042] At the same time, the confined compression test device in this scheme enables visual real-time monitoring of the confined compression process of the rock-like test piece, and can simultaneously obtain the displacement of any section inside the dual chamber and the overall deformation of the external surrounding rock. This further improves the data diversity and effectiveness during the compression test of the rock-like specimen, overcomes the shortcomings of traditional confined compression mechanical testing and multivariate data monitoring and measurement that cannot be effectively synchronized, and facilitates in-depth research on the instability mode and failure mechanism of parallel underground rock chambers under complex conditions.

[0043] 2. By detachably mounting the perforated panel on the side panel and base, the installation, removal and replacement of the transparent plate are facilitated. The transparent plate is mounted on the perforated panel through a slot. By customizing transparent plates with different apertures / hole types, the experimental range can be expanded (such as single hole, multiple holes and special-shaped holes). At the same time, the combination of the perforated panel and the transparent plate enables unobstructed panoramic observation of the hole circumference destruction process. The test rock mass is clamped and fixed by the clamping assembly, so that the test rock mass is firmly fixed inside the visual side limit box, preventing the test rock mass from sliding or tilting when the loading equipment applies a downward load to the compression pad.

[0044] 3. By setting up a telescopic robotic arm, in which the proximal straight arm can be detachably mounted on the visual side limit box through a fixed support, the telescopic robotic arm can be quickly assembled and disassembled, which is convenient for transportation, storage and maintenance. The universal ball head device connects the vertical round rod and the horizontal control rod, providing multi-angle and multi-degree-of-freedom adjustment capabilities, which can adapt to different operating environments and posture adjustment requirements. The proximal straight arm and the distal straight arm are hingedly connected, which can achieve a certain degree of telescoping or folding, and is suitable for different working radius or space restriction scenarios. The round rod fixer is combined with the first fixing bolt, and the control rod fixer is combined with the second fixing bolt to ensure that each connection node has good fixing strength to prevent loosening or displacement during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 Schematic diagram of the whole embodiment;

[0046] Figure 2 Schematic diagram of the overall visualization side limit box in this embodiment;

[0047] Figure 3 is a partial schematic diagram of the visual side limit box in this embodiment;

[0048] Figure 4 Schematic diagram of the front view of the perforated panel in this embodiment;

[0049] Figure 5 is a three-dimensional schematic diagram of a perforated panel in an embodiment;

[0050] Figure 6 for Figure 3 A front view schematic diagram of

[0051] Figure 7 Schematic diagram of the front view of the transparent plate in this embodiment;

[0052] Figure 8 Schematic diagram of the overall telescopic robotic arm in this embodiment;

[0053] Figure 9 Schematic diagram of the overall positioning bracket in this embodiment.

[0054] 1. The cam frame is provided with a plurality of support members, each of which is provided with a plurality of support members, and a plurality of support members are provided with plurality of support members. 2. The cam frame is provided with a plurality of support members, each of which is provided with a plurality of support members. 3. The cam frame is provided with a plurality of support members, each of which is provided with a plurality of support members. 4. The cam frame is provided with a plurality of support members, each of which is provided with a plurality of support members. DETAILED DESCRIPTION

[0055] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that the embodiments of the present invention and the features therein can be combined with each other without conflict.

[0056] 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. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0057] Example 1

[0058] like Figure 1 As shown, a rock-like double-hole specimen lateral confinement compression test device with multi-source monitoring data fusion includes: a visual side confinement box for placing and fixing the test rock mass, with double holes opened on the side wall; a compression pad placed on the top of the test rock mass for bearing pressure; a loading device (not shown in the figure) for applying a downward load to the compression pad, specifically a press; a telescopic mechanical arm, hingedly mounted on the visual side confinement box, and at least two are provided, installed on one side of the visual side confinement box; a positioning bracket, fixedly mounted on one side of the visual side confinement box; a data acquisition device, including a laser displacement meter 30 and a camera 3 1, wherein the camera 31 is an industrial camera 31, the laser displacement meter 30 is mounted on the telescopic robot arm, the camera 31 is mounted on the positioning bracket, and the laser displacement meter 30 and the camera 31 are both arranged toward the visual side limit box. The data acquisition device further includes: a data acquisition box 32 and a computer 33, wherein the data acquisition box 32 is connected to the laser displacement meter 30 via a wire, and the computer 33 is connected to the camera 31 and the data acquisition box 32 via a wire, so that the data acquisition box 32 receives the data collected by the laser displacement meter 30 and the camera 31, and processes and records the data through the computer 33;

[0059] By integrating the visual limit measurement box, telescopic robotic arm, positioning bracket and data acquisition device, the integration and utilization rate of the lateral confinement compression device of the rock mass double-hole specimen are improved, making the assembly and disassembly process convenient and fast. At the same time, through the lateral confinement compression test device in this scheme, visual real-time monitoring of the lateral confinement compression process of the rock-like test piece is realized, and the displacement of any section inside the double-hole chamber and the overall deformation of the external surrounding rock can be obtained at the same time, further improving the data diversity and effectiveness in the compression test process of the rock-like specimen, and overcoming the deficiency that traditional lateral confinement compression mechanical tests and multivariate data monitoring and measurement cannot be effectively synchronized.

[0060] like Figure 2-Figure 7 As shown, in some preferred embodiments, in order to better disassemble, install and transport the visual side limit box, the visual side limit box includes: two opening panels 1, a base 2, two side panels 3, a test piece holding bottom plate 4, two transparent plates 6, a pressure steel pad 7 and a clamping assembly for clamping the test rock mass;

[0061] The two side panels 3 are symmetrically arranged at both ends of the top surface of the base 2 and are fixedly connected to the base 2; the two perforated panels 1 are detachably mounted on the side panels 3 and the two side walls of the base 2. Specifically, the perforated panels 1 can be detachably mounted on the side panels 3 and the two side walls of the base 2 by bolts, or can be detachably mounted on the side panels 3 and the two side walls of the base 2 by a snap connection. The perforated panels 1 can be detachably mounted on the side panels 3 and the base 2, which also facilitates the installation, removal and replacement of the transparent plate 6;

[0062] The test piece holding bottom plate 4 is fixedly mounted on the upper surface of the base 2 and is located in the middle of the two side plates 3; the two perforated panels 1 are symmetrically provided with card slots 8, the cross-section of the card slots 8 is L-shaped, and the material is a steel sheet, and the two transparent plates 6 are mounted on the two perforated panels 1. In some preferred embodiments, the transparent plates 6 can be colorless transparent organic glass, or transparent acrylic plates or other types of transparent plates 6, wherein the double holes on the visual side limit box are opened on the transparent plates 6, and the transparent plates 6 are mounted on the perforated panels 1 through the card slots 8. By customizing transparent plates 6 with different apertures / hole types, the experimental range can be expanded (such as single holes, multiple holes and special-shaped holes). At the same time, the combination of the perforated panels 1 and the transparent plates 6 realizes unobstructed panoramic observation of the hole circumference destruction process;

[0063] like Figure 6As shown, in order to better fix the test rock mass and avoid sliding or tilting during the test, in some embodiments, the clamping assembly is installed on the two side plates 3, and the clamping assembly includes: a movable plate 5, two adjusting screws 9 and a fixed nut 10, the adjusting screw 9 is fixedly connected to the fixed nut 10, and the adjusting screw 9 is rotatably installed on the movable plate 5 and threadedly connected to the side plate 3; the clamping assembly is provided with at least two groups, and the two groups of clamping assemblies are relatively arranged on the two side plates 3. Specifically, by rotating the fixed nut 10 and the adjusting screw 9 and driving the movable plate 5 to move, the position of the movable plate 5 is finely adjusted, and by at least two groups of clamping assemblies relatively arranged on the two side plates 3, with the double adjusting screw 9 structure of each group, a symmetrical and uniform clamping force can be applied, which can effectively prevent the test rock mass from being deformed or offset by unilateral force;

[0064] It is worth mentioning that a limiting plate 11 is mounted on the periphery of the adjusting screw 9, and one end of the limiting plate 11 is tightly attached to the side wall of the side panel 3. The limiting plate 11 can increase the stability of the adjusting screw 9 during rotation, avoid shaking during rotation, and make the adjusting screw 9 more stable when rotating.

[0065] In some preferred embodiments, in order to more conveniently and quickly rotate the adjusting screw 9, the shape of the fixing nut 10 is any one of a star nut, a butterfly nut or a knurled circular nut, and is fixedly installed on one end of the adjusting screw 9 by welding. When in use, the operator can tighten or loosen it directly by hand without the aid of tools.

[0066] like Figure 8 As shown, in some embodiments, in order to enable the laser displacement meter 30 to have multi-angle and multi-degree-of-freedom adjustment capabilities, the telescopic robotic arm includes: a fixed support 12, a proximal straight arm 13, a distal straight arm 14, a round rod holder 15, a vertical round rod 16, a universal ball head device 17, a control rod holder 18 and a horizontal control rod 19. The telescopic robotic arm structure has a modular design, which is convenient for installation and disassembly and easy for maintenance;

[0067] The proximal straight arm 13 is hinged on the fixed support 12 and is detachably mounted on the visual side limit box through the fixed support 12. Specifically, the cross-section of the fixed support 12 is an inverted L-shaped, and is detachably connected to the perforated panel 1 by bolts. The proximal straight arm 13 is detachably mounted on the visual side limit box through the fixed support 12, thereby realizing rapid assembly and disassembly of the telescopic manipulator arm and facilitating transportation, storage and maintenance. The distal straight arm 14 is hinged on the proximal straight arm 13 and can achieve a certain degree of telescoping or folding, which is suitable for different working radius or space restriction scenarios. A rod holder 15 is fixed to one end of the distal straight arm 14; a vertical round rod 16 is fixed to the distal straight arm 14 via the rod holder 15 and a first fixing bolt 20; a universal ball joint device 17 is fixed to the vertical round rod 16 at one end and to the control rod holder 18 at the other end. The universal ball joint device 17 connects the vertical round rod 16 and the horizontal control rod 19, which can adapt to different operating environments and posture adjustment requirements; the horizontal control rod 19 is fixed to the vertical round rod 16 via the control rod holder 18, a second fixing bolt 21, and the universal ball joint device 17;

[0068] It is worth mentioning that the rotation of the proximal straight arm 13 on the fixed support 12, the rotation of the distal straight arm 14 on the proximal straight arm 13, and the rotation of the universal ball head device 17 can only be carried out under the action of external force, and they remain in their original state without the action of external force. When adjusting the position of the vertical round rod 16 and the horizontal control rod 19, it is necessary to loosen the first fixing bolt 20 and the second fixing bolt 21 before adjustment. The round rod fixer 15 cooperates with the first fixing bolt 20, and the control rod fixer 18 cooperates with the second fixing bolt 21, ensuring that each connection node has good fixing strength to prevent loosening or displacement during operation.

[0069] The horizontal control rod 19 is provided with a scale value (not shown in the figure), and a mounting head 22 is provided at one end of the horizontal control rod 19. The laser displacement meter 30 is installed on the mounting head 22 and faces the visual side limit box. The scale value set on the horizontal control rod 19 can realize visual adjustment of the position, which is convenient for precise control of the horizontal movement distance of the robotic arm.

[0070] like Figure 9As shown, in some embodiments, in order to facilitate the adjustment of the distance between the camera 31 and the visual side limit box, the positioning bracket includes: two fixed brackets 23, a translation bracket 24, a mounting platform 28, two second sliding seats 29 and a lifting assembly; the two fixed brackets 23 are both L-shaped in cross-section and can be detachably mounted on a side wall of the visual side limit box; the translation bracket 24 is mounted on the two fixed brackets 23 through two second sliding seats 29, and the two second sliding seats 29 are slidably connected to the two fixed brackets 23; the mounting platform 28 is mounted on the top of the lifting assembly, and the lifting assembly is mounted on the translation bracket 24, and the camera 31 is fixedly mounted on the mounting platform 28 and faces the visual side limit box. By moving the two second sliding seats 29, the translation bracket 24 and the lifting assembly on the translation bracket 24 are moved, thereby achieving adjustment of the distance between the camera 31 and the visual side limit box;

[0071] In order to facilitate the adjustment of the height and horizontal movement of the camera 31, in some embodiments, the lifting assembly includes: a first sliding seat 25, a support seat 26 and a lifting bracket 27, the lifting bracket 27 is slidably installed inside the support seat 26, and the mounting platform 28 is fixed to one end of the lifting bracket 27. The support seat 26 is mounted on the translation bracket 24 through the first sliding seat 25, and the first sliding seat 25 is slidably connected to the translation bracket 24. By moving the first sliding seat 25, the support seat 26 and the lifting bracket 27 on the sliding seat are driven to move horizontally on the translation bracket 24. By raising or lowering the height of the lifting bracket 27, the height of the camera 31 on the mounting platform 28 can be adjusted.

[0072] It is worth mentioning that the first sliding seat 25 is slidably mounted on the translation bracket 24, the second sliding seat 29 is slidably mounted on the fixed bracket 23, and the lifting bracket 27 is slidably mounted inside the support base 26. All of them can only be slidably adjusted under the presence of external force, and remain in their original state when there is no external force.

[0073] In some other preferred implementations, a limiting mechanism is also provided on the lifting assembly. Specifically, a limiting pin is provided inside the lifting bracket 27. The head of the limiting pin is semi-spherical, and a limiting hole is provided on the support seat 26. A spring is provided between the limiting pin and the lifting bracket 27. When the lifting bracket 27 is lifted and the limiting pin is coaxial with the limiting hole, the limiting pin is bounced into the limiting hole under the action of the spring, thereby limiting the maximum lifting of the lifting bracket 27 to avoid structural damage or the camera 31 falling.

[0074] In order to prevent the positioning bracket from moving during use, thereby affecting the accuracy of the camera 31 recording, in some preferred embodiments, the first sliding seat 25, the second sliding seat 29 and the support seat 26 are provided with locking members. In some preferred embodiments, the locking members can be conventional bolts in the prior art. By loosening or tightening the bolts with a wrench, the first sliding seat 25 and the second sliding seat 29 are fixed after the adjusted positions, and the position of the lifting bracket 27 is fixed after the adjusted positions.

[0075] The locking member may also be a star-shaped handle bolt, and specifically the user manually rotates the star handle to achieve locking and fixing of the first sliding seat 25 and the second sliding seat 29 after adjusting the position, and locking and fixing the position of the lifting bracket 27 after adjustment; in some other preferred embodiments, the locking member may also be an eccentric cam locking structure, including a rotating handle and an eccentric wheel, and the eccentric wheel is pressed against the sliding surface by rotating the rotating handle to achieve quick locking or release.

[0076] Locking members are provided on the first sliding seat 25, the second sliding seat 29 and the supporting seat 26, so that the first sliding seat 25 and the second sliding seat 29 can be fixed after adjusting the position, and the position of the lifting bracket 27 can be fixed after adjustment, so as to avoid movement during use and ensure the accuracy of positioning. At the same time, the locking members can also facilitate quick unlocking for fine-tuning and re-locking, making adjustment more convenient. It is worth mentioning that the cross-sections of the first sliding seat 25 and the second sliding seat 29 are both inverted U-shaped.

[0077] Example 2

[0078] On the basis of the first embodiment, the present invention further provides a method for installing and using a rock-like double-hole specimen confined compression test device, which specifically includes the following steps:

[0079] S1: Place the visual side limit box upright on the press platform, remove the perforated steel panel, perforated organic glass panel, and compressed steel pad 7 in sequence, and then adjust the clamping assembly. Specifically, rotate the fixing nut 10 clockwise. The fixing nut 10 drives the adjusting bolt fixed to it to rotate on the movable plate 5 and the side plate 3, so that the two movable plates 5 move closer to the side plate 3, thereby increasing the horizontal distance between the two movable plates 5.

[0080] S2, vertically placing the prefabricated rock-like double-hole test piece on the test piece holding base plate 4 in the visual side limit box, and then clamping it by adjusting the clamping rent. Specifically, the fixing nut 10 is then rotated counterclockwise, and the fixing nut 10 drives the adjusting bolt fixed thereto to rotate on the movable plate 5 and the side plate 3, so that the two movable plates 5 move toward the rock-like double-hole test piece, thereby making the two movable plates 5 contact and press the rock-like double-hole test piece;

[0081] S3, clamp the two transparent plates 6 into the clamping slots 8 on the two perforated panels 1, and then fix the perforated panels 1 with the transparent plates 6 installed to the side panels 3 with bolts. It should be noted that the positions of the holes reserved in the transparent plates 6 should be consistent with the positions of the holes in the rock-like double-hole test piece, thereby completing the installation of the rock-like double-hole test piece in the visual side limit box;

[0082] S4, fix the two sets of telescopic manipulators to the visual side limit box with bolts, and fix the fixing bracket 23 to the middle position of the bottom of the visual side limit box with bolts;

[0083] S5, install the laser displacement meter 30 on the mounting head 22, and connect the laser displacement meter 30 to the data acquisition box 32 via wires. Fixedly install the camera 31 on the mounting platform 28, and connect the camera 31 to the data acquisition box 32 and the computer 33 via wires.

[0084] S6. First, position the laser displacement meter 30. Adjust the proximal straight arm 13, distal straight arm 14, vertical rod 16, and universal ball joint 17 of the telescopic manipulator so that the horizontal control rod 19 of each telescopic manipulator is aligned with the hole in the transparent plate 6. Tighten the first fixing bolt 20, then loosen the second fixing bolt 21. Slowly move the horizontal control rod 19 to allow the laser displacement meter 30 to penetrate the hole of the rock-like double-hole specimen. By reading the scale on the horizontal control rod 19, the laser displacement meter 30 reaches the designated analysis section within the hole of the rock-like double-hole specimen. Tighten the second fixing bolt 21, and turn on the data acquisition box 32 and computer 33 to collect displacement data.

[0085] S7, then positioning the camera 31, opening the software system corresponding to the camera 31 on the computer 33, and adjusting the specific position in the positioning bracket, including adjusting the displacement between the camera 31 and the visualization side limit box, adjusting the horizontal displacement of the camera 31 on the translation bracket 24, and adjusting the height of the camera 31 from the bottom surface, so that the camera 31 can completely record the entire plane range of the rock-like double-hole specimen through the transparent plate 6;

[0086] S8. After completing the above steps, place the compression pad on the top of the rock-like double-hole specimen, start the loading equipment, and when the upper pressure plate of the loading equipment contacts the upper surface of the compression steel pad 7, the real-time recording of the displacement of the double holes around the rock-like double-hole specimen during the lateral confinement compression process and the visual instability and failure process of the rock-like specimen can be started.

[0087] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0088] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A rock-like double-hole specimen confined compression test device with multi-source monitoring data fusion, characterized in that: include: Visual side confinement box, used to place and fix the test rock mass, with double holes opened in the side wall; Compression pads are placed on top of the test rock mass to bear the pressure; a loading device for applying a downward load to the compression pad; A telescopic mechanical arm is hingedly mounted on the visual side limit box, and at least two of them are provided and mounted on one side of the visual side limit box; Positioning bracket, fixedly installed on one side of the visual side limit box; The data acquisition device comprises a laser displacement meter (30) and a camera (31), wherein the laser displacement meter (30) is mounted on a telescopic mechanical arm, and the camera (31) is mounted on a positioning bracket, and both the laser displacement meter (30) and the camera (31) are arranged toward the visual side limit box.

2. The multi-source monitoring data fusion rock-like double-hole specimen confined compression test device according to claim 1 is characterized by: The visual side limit box comprises: two opening panels (1), a base (2), two side panels (3), a test piece holding bottom plate (4), two transparent plates (6), a pressure-bearing steel pad (7) and a clamping assembly for clamping the test rock mass; The two side panels (3) are symmetrically arranged at both ends of the top surface of the base (2) and are fixedly connected to the base (2); The two opening panels (1) are detachably mounted on the side panels (3) and the two side walls of the base (2); The test piece holding base plate (4) is fixedly mounted on the upper surface of the base (2) and is located in the middle of the two side plates (3); The two perforated panels (1) are symmetrically provided with card slots (8); the two transparent plates (6) are mounted on the two perforated panels (1); and the clamping assembly is mounted on the two side panels (3).

3. The multi-source monitoring data fusion rock-like double-hole specimen confined compression test device according to claim 2, characterized in that: The clamping assembly comprises: a movable plate (5), two adjusting screws (9) and a fixed nut (10), wherein the adjusting screw (9) is fixedly connected to the fixed nut (10), and the adjusting screw (9) is rotatably mounted on the movable plate (5) and is threadedly connected to the side plate (3); The clamping components are provided in at least two groups, and the two groups of clamping components are provided on the two side plates (3) in a relative manner.

4. The multi-source monitoring data fusion rock-like double-hole specimen confined compression test device according to claim 3 is characterized by: A limiting plate (11) is sleeved on the outer periphery of the adjusting screw (9), and one end of the limiting plate (11) is tightly attached to the side wall of the side plate (3).

5. The multi-source monitoring data fusion rock-like double-hole specimen confined compression test device according to claim 1, characterized in that: The telescopic mechanical arm comprises: a fixed support (12), a proximal straight arm (13), a distal straight arm (14), a round rod fixer (15), a vertical round rod (16), a universal ball head device (17), a control rod fixer (18) and a horizontal control rod (19); The proximal straight arm (13) is hinged on the fixed support (12) and is detachably mounted on the visual side limit box through the fixed support (12); The distal straight arm (14) is hinged to the proximal straight arm (13); the round rod fixer (15) is fixed to one end of the distal straight arm (14); The vertical round rod (16) is fixed to the distal straight arm (14) via a round rod fixer (15) and a first fixing bolt (20); One end of the universal ball joint device (17) is fixed to the vertical round rod (16), and the other end is fixed to the control rod holder (18); The horizontal control rod (19) is fixed to the vertical round rod (16) via a control rod fixer (18), a second fixing bolt (21) and a universal ball head device (17).

6. The multi-source monitoring data fusion rock-like double-hole specimen confined compression test device according to claim 5, characterized in that: The horizontal control rod (19) is provided with a scale value, and a mounting head (22) is provided at one end of the horizontal control rod (19). The laser displacement meter (30) is mounted on the mounting head (22) and faces the visual side limit box.

7. The multi-source monitoring data fusion rock-like double-hole specimen confined compression test device according to claim 1, characterized in that: The positioning bracket comprises: two fixed brackets (23), a translation bracket (24), a mounting platform (28), two second sliding seats (29) and a lifting assembly; The two fixing brackets (23) are both L-shaped in cross-section and can be detachably mounted on a side wall of the visual side limit box; The translation bracket (24) is mounted on the two fixed brackets (23) via the two second sliding seats (29), and the two second sliding seats (29) are slidably connected to the two fixed brackets (23); The mounting platform (28) is mounted on the top of the lifting assembly, and the camera (31) is fixedly mounted on the mounting platform (28) and faces the visual side limit box.

8. The multi-source monitoring data fusion rock-like double-hole specimen confined compression test device according to claim 7, characterized in that: The lifting assembly comprises: a first sliding seat (25), a support seat (26) and a lifting bracket (27), wherein the lifting bracket (27) is slidably mounted inside the support seat (26), the mounting platform (28) is fixed to one end of the lifting bracket (27), the support seat (26) is mounted on the translation bracket (24) via the first sliding seat (25), and the first sliding seat (25) is slidably connected to the translation bracket (24).

9. The multi-source monitoring data fusion rock-like double-hole specimen confined compression test device according to claim 8, characterized in that: The first sliding seat (25), the second sliding seat (29) and the supporting seat (26) are all provided with locking pieces.

10. The multi-source monitoring data fusion rock-like double-hole specimen confined compression test device according to claim 9, characterized in that: The cross-sections of the first sliding seat (25) and the second sliding seat (29) are both in an inverted U shape.

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