A rock mechanics-based water flow test observation device and method

Abstract

The application discloses a water flow test observation device and method based on rock mechanics, which comprises a device shell, a first guide rail horizontally fixedly arranged on the inner wall of the bottom of the device shell, a circulating water tank fixed on the inner wall of the bottom of the device shell and arranged at the right end of the first guide rail, two groups of driving sliding blocks slidingly arranged on the first guide rail and each fixedly provided with a rock sample fixing and calibrating device, double-rod hydraulic cylinders fixedly arranged on the inner walls of the front and rear sides of the device shell, rock sample fixing plates fixedly arranged on the piston ends of the double-rod hydraulic cylinders and a rock sample boring and milling device fixedly arranged on the inner wall of the rear side of the device shell.

Description

Technical Field

[0001] This invention relates to the field of rock mechanics technology, specifically to a water flow test observation device and method based on rock mechanics. Background Technology

[0002] Rock mechanics is a discipline that studies the stress, strain, failure, stability, and reinforcement of rocks under the influence of external factors (such as loads, water flow, and temperature changes). Also known as rock mass mechanics, it is a branch of mechanics. Its research aims to solve rock engineering problems in hydraulic engineering, civil engineering, and other construction projects, including rock seepage problems. For most rocks, it assumes that water flow within the rock is laminar, with the flow velocity linearly related to the hydraulic gradient (the ratio of the water level difference between any two points to the distance between those two points). This allows for the determination of permeability, enabling seepage control measures to reduce seepage pressure at the dam base and improve dam stability.

[0003] However, when this coefficient is measured indoors, multiple control groups are usually set up to eliminate the influence of external factors and improve the accuracy of the results. However, this method is not only time-consuming and labor-intensive, but also occupies a lot of space and is inefficient. In addition, when controlling the hydraulic gradient of the rock sample, it is easy to tilt, which will cause deviation of the hydraulic gradient and thus affect the measurement of permeability.

[0004] Therefore, it is necessary to provide a rock mechanics-based water flow test and observation device to solve the above problems. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides the following technical solution: a water flow test and observation device based on rock mechanics, comprising:

[0006] The device housing has a first guide rail horizontally fixedly mounted on its bottom inner wall. A circulating water tank fixed on the bottom inner wall of the device housing is placed at the right end of the first guide rail. Two sets of drive sliders are slidably mounted on the first guide rail, and rock sample fixing and calibration devices are fixedly mounted on each of them.

[0007] Double-rod hydraulic cylinders are fixedly mounted on the inner walls of the front and rear sides of the device housing, and rock sample fixing plates are fixedly mounted on the piston ends of the double-rod hydraulic cylinders.

[0008] The rock sample boring and milling device is fixedly mounted on the inner wall of the rear side of the device housing.

[0009] Furthermore, as a preferred embodiment, a robotic arm is fixedly mounted on the inner wall of the upper end of the device housing, and a water release device is fixedly mounted on its lower end. The left end of the water release device is connected to a water storage tank via a hose. The water storage tank is fixedly embedded in the upper end of the device housing, and a circulating water pump is connected to its upper end. The circulating water pump is fixedly mounted on the inner wall of the bottom of the device housing, and its input end is fixed to the circulating water tank. A perforated plate is provided on the upper left side of the circulating water tank.

[0010] Furthermore, preferably, the rock sample fixation and calibration device includes:

[0011] A fixed plate is fixedly mounted at the center of the drive slider on the upper end of the first guide rail. A pad is fixedly mounted at the center of the fixed plate. A drive rod is rotatably mounted on the pad. Both ends of the drive rod are rotatably mounted with transmission connecting rods. The other end of the transmission connecting rod is rotatably mounted with a sliding plate. Two sets of hydraulic rods are horizontally fixedly mounted on the fixed plate. The other ends of the two sets of hydraulic rods are fixedly mounted on the right sliding plate. Four sets of second guide rails are fixedly mounted on both sides of the fixed plate. Two sets of sliding plates are slidably mounted on each of the two sets. Four sets of self-locking telescopic rods are fixedly mounted on the fixed plate along its central circumference. A receiving plate is fixedly mounted on each of the four sets of self-locking telescopic rods.

[0012] Furthermore, as a preferred embodiment, a rotating block is rotatably mounted on the inner side of the sliding plate, and a clamping fixing plate is fixedly mounted on it.

[0013] Furthermore, as a preferred embodiment, compared with the left-side rock sample fixing and calibration device, the right-side rock sample fixing and calibration device has two sets of first hydraulic cylinders and two sets of self-locking telescopic rods arranged between the receiving plate and the fixing plate, and a horizontal sliding track is provided on the inner side of the sliding plate, on which a rotating block is slidably mounted, and a clamping fixing plate is rotatably mounted on the rotating block.

[0014] Furthermore, preferably, the rock sample boring and milling device includes:

[0015] The third guide rail is vertically fixedly mounted on the inner wall of the rear side of the device housing. An electric slider is slidably mounted on it. A second hydraulic cylinder is fixedly mounted at the center of the electric slider. A boring and milling assembly is fixedly mounted on the piston end of the second hydraulic cylinder. A drive motor is fixedly mounted on the upper end of the boring and milling assembly, and a milling cutter is fixedly mounted on its lower end.

[0016] Furthermore, preferably, the water release device includes:

[0017] A multi-stage bidirectional hydraulic cylinder is fixedly mounted at the lower end of the robotic arm. A fixed housing is fixedly mounted at the lower end of the cylinder. Four sets of fixed housings are rotatably arranged at both ends of the fixed housing via rotating hinges. A return spring is arranged between two adjacent sets of fixed housings. Hinge limiting plates are fixedly mounted on the piston rods at both ends of the multi-stage bidirectional hydraulic cylinder.

[0018] Furthermore, as a preferred embodiment, the fixed shell is provided with a water outlet pipe, which is connected to the bottom of the water storage tank via a flexible hose at its rear.

[0019] Furthermore, as a preferred embodiment, a scanner is mounted on the piston of the dual-bar hydraulic cylinder, and the scanner is externally connected to the display screen.

[0020] A rock mechanics-based method for observing water flow in experiments includes the following steps:

[0021] S1. Select a suitable rock sample and set the running path of the rock sample boring and milling device and the extension length of the multi-stage bidirectional hydraulic cylinder according to the experimental requirements;

[0022] S2. Place the test rock sample on the two sets of rock sample fixing and calibration devices, drive them to clamp, and move them to the bottom of the rock sample boring and milling device;

[0023] S3. Adjust the first hydraulic cylinder of the right-side rock sample fixing and calibration device so that the rock sample boring and milling device mills out a suitable groove;

[0024] S4. After completion, reset and drive the two sets of rock sample fixing and calibration devices to slide to the right until the right side plane of the rock sample coincides with the water passage plate. Start the two sets of double-rod hydraulic cylinders to make the two sets of rock sample fixing plates clamp the rock sample.

[0025] S5. Start the robotic arm to place the water release device in the groove of the rock sample, open the water storage tank, and adjust the flow rate according to the experimental requirements;

[0026] S6. Water flows out through the orifice plate and falls into the circulating water tank, and then returns to the storage tank by the circulating water pump;

[0027] S7. The permeability of each groove under water flow conditions is displayed on an external screen in real time by a scanner on a dual-bar hydraulic cylinder for observation.

[0028] Compared with the prior art, the present invention provides a water flow test observation device and method based on rock mechanics, which has the following beneficial effects:

[0029] In this invention, a rock sample fixing and calibration device is provided to ensure that the rock sample is in the horizontal center of the device. Combined with a rock sample boring and milling device, the rock sample is tilted by the rock sample fixing and calibration device, which facilitates the rock sample boring and milling device to open grooves of different gradients. At the same time, the rock sample remains horizontal and fixed while tilting, preventing deviation of the opened grooves. The opened grooves contain control groups and multiple test groups, which can more intuitively observe the influence of water flow gradient on permeability. While ensuring experimental results, it saves time and space and controls experimental costs to a certain extent. At the same time, a water flow release device is provided to control the water flow according to the number of grooves opened on the rock sample, thereby eliminating the influence of other factors on the experiment and making the experimental results more accurate. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of a water flow test and observation device based on rock mechanics;

[0031] Figure 2 This is a partial structural diagram of a water flow test and observation device based on rock mechanics.

[0032] Figure 3 A schematic diagram of a rock sample fixing and calibration device for a water flow test observation device based on rock mechanics;

[0033] Figure 4 This is a schematic diagram of the water flow release device in a water flow test and observation device based on rock mechanics.

[0034] Figure 5 A schematic diagram of a test rock sample structure for a water flow test and observation device based on rock mechanics;

[0035] In the diagram: 1. Device housing; 2. First guide rail; 3. Circulating water tank; 4. Double-rod hydraulic cylinder; 5. Rock sample fixing plate; 6. Rock sample fixing and calibration device; 7. Rock sample boring and milling device; 8. Robotic arm; 9. Water release device; 10. Circulating water pump; 11. Water storage tank; 12. Water passage plate; 13. Scanner; 61. Fixing plate; 62. Pad; 63. Drive rod; 64. Transmission connecting rod; 65. Telescopic rod; 66. Sliding plate; 6 7. Second guide rail; 68. Self-locking telescopic rod; 69. Receiving plate; 610. First hydraulic cylinder; 611. Rotating block; 612. Clamping fixing plate; 71. Third guide rail; 72. Electric slider; 73. Second hydraulic cylinder; 74. Boring and milling assembly; 75. Drive motor; 76. Milling cutter; 91. Multi-stage bidirectional hydraulic cylinder; 92. Fixing shell; 93. Water outlet pipe; 94. Rotating hinge; 95. Hinge limiting plate; 96. Return spring. Detailed Implementation

[0036] Please see Figures 1-5 This invention provides a water flow test observation device based on rock mechanics, comprising:

[0037] The device housing 1 has a first guide rail 2 horizontally fixedly mounted on its bottom inner wall. A circulating water tank 3 fixed on the bottom inner wall of the device housing 1 is placed at the right end of the first guide rail 2. Two sets of driving sliders are slidably arranged on the first guide rail 2, and rock sample fixing and calibration devices 6 are fixedly mounted on each of them.

[0038] Double-rod hydraulic cylinders 4 are fixedly mounted on the inner walls of the front and rear sides of the outer shell 1 of the device, and rock sample fixing plates 5 are fixedly mounted on the piston ends of the double-rod hydraulic cylinders 4.

[0039] The rock sample boring and milling device 7 is fixedly assembled on the inner wall of the rear side of the device housing 1;

[0040] In a preferred embodiment, the rock sample required for the test should be cut into a cuboid shape, and the boring and milling path of the rock sample boring and milling device 7 should be set according to the rock sample and experimental requirements. When setting the boring and milling path, the number of slots in the rock sample should be determined according to the width of the rock sample, and the width of the slots should be consistent. The gradient should be changed according to the experimental requirements, and the number of slots should be odd. At the same time, a water-blocking plate is reserved between two adjacent slots to prevent water in the slot with a lower gradient from flowing into the slot with a higher gradient during the water flow test, which would affect the flow rate of the water in the slot with a lower gradient and thus cause experimental errors.

[0041] Furthermore, a robotic arm 8 is fixedly mounted on the inner wall of the upper end of the device housing 1, and a water release device 9 is fixedly mounted on its lower end. The left end of the water release device 9 is connected to the water storage tank 11 through a hose. The water storage tank 11 is fixedly embedded in the upper end of the device housing 1, and a circulating water pump 10 is connected to its upper end. The circulating water pump 10 is fixedly mounted on the inner wall of the bottom of the device housing 1, and its input end is fixed to the circulating water tank 3. A perforated plate 12 is provided on the upper left side of the circulating water tank 3.

[0042] In a preferred embodiment, the perforated plate 12 has multiple sets of through holes, allowing water from rock sample tanks of different gradients to flow into the circulating water tank 3, preventing water from accumulating and affecting the test results. Meanwhile, the water flowing into the circulating water tank 3 will eventually return to the storage tank 11 via the circulating water pump 10, completing the recycling of water resources. This saves water resources and controls test costs. The robotic arm 8 can accurately place the water release device 9 into the groove of the rock sample, thereby making the test results more accurate.

[0043] Furthermore, the rock sample fixing and calibration device 6 includes:

[0044] A fixed plate 61 is fixedly mounted at the center of the drive slider on the upper end of the first guide rail 2. A pad 62 is fixedly mounted at the center of the fixed plate 61. A drive rod 63 is rotatably mounted on the pad 62. A transmission connecting rod 64 is rotatably mounted at both ends of the drive rod 63. A sliding plate 66 is rotatably mounted at the other end of the transmission connecting rod 64. Two sets of hydraulic rods 65 are horizontally fixedly mounted on the fixed plate 61. The other ends of the two sets of hydraulic rods 65 are fixedly mounted on the right sliding plate 66. Four sets of second guide rails 67 are fixedly mounted on both sides of the fixed plate 61. Two sets of sliding plates 66 are slidably mounted on each of them. Four sets of self-locking telescopic rods 68 are fixedly mounted on the fixed plate 61 along its central circumference. A receiving plate 69 is fixedly mounted on each of them.

[0045] In a preferred embodiment, the two sets of hydraulic rods 65 move synchronously to ensure that the sliding plate 66 is in a horizontal state. Initially, the hydraulic rods 65 are in a fully extended state, and the four sets of self-locking telescopic rods 68 are in a self-locking state. When the rock sample is hoisted onto the receiving plate 69, the two sets of hydraulic rods 65 are driven to retract, and the right sliding plate 66 slides along the second guide rail 67 toward the center of the device. At the same time, under the transmission of the transmission link 64, the drive rod 63 rotates counterclockwise, thereby driving the left sliding plate 66 to slide synchronously with the right sliding plate 66 along the second guide rail 67 toward the center of the device. This ensures that during operation, the two sets of sliding plates 66 are always symmetrical with respect to the center of the device, thus ensuring that the rock sample is in the horizontal middle of the device.

[0046] Furthermore, a rotating block 611 is rotatably mounted on the inner side of the sliding plate 66, and a clamping fixing plate 612 is fixedly mounted on it.

[0047] Furthermore, compared with the left rock sample fixing and calibration device 6, the right rock sample fixing and calibration device 6 has two sets of first hydraulic cylinders 610 and two sets of self-locking telescopic rods 68 arranged between the receiving plate 69 and the fixing plate 61, and the sliding plate 66 has a horizontal sliding track on its inner side, on which a rotating block 611 is slidably mounted, and a clamping fixing plate 612 is rotatably mounted on the rotating block 611.

[0048] In a preferred embodiment, when the rock sample boring and milling device 7 performs gradient boring and milling, the self-locking telescopic rods 68 of the two sets of rock sample fixing and calibration devices 6 are unlocked. At the same time, the two sets of first hydraulic cylinders 610 of the right rock sample fixing and calibration device 6 extend in a stepwise manner, and the height of each extension is related to the gradient of the rock sample to be milled. During the lifting process on one side of the rock sample, the clamping and fixing plates 612 of the two sets of fixing and calibration devices 6 are always in a clamped state and rotate according to the lifting situation. The receiving plates 69 of the two sets of rock sample fixing and calibration devices 6 will tilt, and the change of tilt is compensated by releasing the self-locking telescopic rods 68. At the same time, in the initial state, the rotating block 611 of the right rock sample fixing and calibration device 6 is located at the rightmost end of its sliding track. As the first hydraulic cylinder 610 extends, the rotating block 611 will move to the left, so that the rock sample remains horizontally fixed while tilting, thereby preventing deviation of the groove.

[0049] Furthermore, the rock sample boring and milling device 7 includes:

[0050] The third guide rail 71 is vertically fixedly mounted on the inner wall of the rear side of the device housing 1. An electric slider 72 is slidably mounted on it. A second hydraulic cylinder 73 is fixedly mounted at the center of the electric slider 72. A boring and milling assembly 74 is fixedly mounted on the piston end of the second hydraulic cylinder 73. A drive motor 75 is fixedly mounted on the upper end of the boring and milling assembly 74, and a milling cutter 76 is fixedly mounted on its lower end.

[0051] As a preferred embodiment, before the test, a milling cutter 76 of appropriate length should be selected according to the size of the rock sample and the gradient of the groove to be opened, and then installed and fixed. At the same time, the second hydraulic cylinder 73 can adjust the relative position of the milling cutter 76 by telescoping, so as to make the grooving process more convenient and faster.

[0052] Furthermore, the water release device 9 includes:

[0053] A multi-stage bidirectional hydraulic cylinder 91 is fixedly mounted at the lower end of the robotic arm 8. A fixed housing 92 is fixedly mounted at the lower end of the cylinder. Four sets of fixed housings 92 are rotatably arranged at both ends of the fixed housing 92 through a rotating hinge 94. A return spring 96 is arranged between two adjacent sets of fixed housings 92. A hinge limiting plate 95 is fixedly mounted on the piston rod at both ends of the multi-stage bidirectional hydraulic cylinder 91.

[0054] In a preferred embodiment, the rotating hinge 94 located below the hinge limiting plate 95 restricts rotation, thereby maintaining a horizontal state. During the test, the multi-stage bidirectional hydraulic cylinder 91 is extended according to the number of slots opened on the rock sample, so that the hinge limiting plate 95 restricts the rotation of an appropriate number of rotating hinges. During the test, as the robotic arm 8 continues to descend, when it descends to the level of the rock sample fixing plate 5, as it continues to descend, the excess fixing shells 92 on both sides will rotate along the rotating hinge 94 under the obstruction of the rock sample fixing plate 5, so that the water flow release device 9 falls smoothly to the designated position. At the same time, during the rotation of the fixing shell 92, the return spring 96 at the connection will be stretched, and after the test, it will help return to the initial position.

[0055] Furthermore, a water outlet pipe 93 is provided inside the fixed shell 92, and its rear side is connected to the bottom of the water storage tank 11 via a hose. A horizontal switch valve is provided on the water outlet pipe 93 inside the fixed shell 92. When the water release device 9 reaches the designated position, the water storage tank 11 is opened, and the horizontal switch valve in the horizontal state is opened, allowing water to flow out. Conversely, it is closed to prevent excess water from flowing out of the water outlet pipe 93 of the fixed shell 92 and interfering with the test operation.

[0056] Furthermore, a scanner 13 is installed on the piston of the dual-rod hydraulic cylinder 4, and the scanner 13 is externally connected to the display screen.

[0057] A rock mechanics-based method for observing water flow in experiments includes the following steps:

[0058] S1. Select a suitable rock sample and set the running path of the rock sample boring and milling device 7 and the extension length of the multi-stage bidirectional hydraulic cylinder 91 according to the experimental requirements.

[0059] S2. Place the test rock sample on the two sets of rock sample fixing and calibration devices 6, drive them to clamp, and move them to the bottom of the rock sample boring and milling device 7;

[0060] S3. Adjust the first hydraulic cylinder 610 of the right-side rock sample fixing and calibration device 6 so that the rock sample boring and milling device 7 can mill out a suitable groove;

[0061] S4. After completion, reset and drive the two sets of rock sample fixing and calibration devices 6 to slide to the right until the right side plane of the rock sample coincides with the water passage plate 12. Start the two sets of double-rod hydraulic cylinders 4 to make the two sets of rock sample fixing plates 5 clamp the rock sample.

[0062] S5. Start the robotic arm 8 to place the water release device 9 into the groove of the rock sample, open the water storage tank 11, and adjust the flow rate according to the experimental requirements;

[0063] S6. Water flows out through the orifice plate 12 and falls into the circulating water tank 3, and returns to the storage tank 11 through the circulating water pump 10;

[0064] S7. The permeability of each groove under water flow conditions is displayed on an external screen in real time by the scanner 13 on the double-rod hydraulic cylinder 4 for observation.

[0065] The above description is merely a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A water flow test and observation device based on rock mechanics, characterized in that: The device includes a housing (1), a first guide rail (2) is horizontally fixed on the bottom inner wall of the housing (1), a circulating water tank (3) fixed on the bottom inner wall of the housing (1) is placed on the right end of the first guide rail (2), and two sets of driving sliders are slidably arranged on the first guide rail (2), and a rock sample fixing and calibration device (6) is fixedly mounted on each of them. Double-rod hydraulic cylinders (4) are fixedly mounted on the inner walls of the front and rear sides of the outer shell (1) of the device, and rock sample fixing plates (5) are fixedly mounted on the piston ends of the double-rod hydraulic cylinders (4). The rock sample boring and milling device (7) is fixedly assembled on the inner wall of the rear side of the device housing (1); A robotic arm (8) is fixedly mounted on the inner wall of the upper end of the device housing (1), and a water flow release device (9) is fixedly mounted on its lower end. The left end of the water flow release device (9) is connected to the water storage tank (11) through a hose. The water storage tank (11) is fixedly embedded in the upper end of the device housing (1), and a circulating water pump (10) is connected to its upper end. The circulating water pump (10) is fixedly mounted on the inner wall of the bottom of the device housing (1), and its input end is fixed to the circulating water tank (3). A water passage plate (12) is provided on the upper left side of the circulating water tank (3). The water release device (9) includes a multi-stage bidirectional hydraulic cylinder (91), which is fixedly mounted on the lower end of the robotic arm (8). A fixed shell (92) is fixedly mounted on the lower end of the cylinder. Four sets of fixed shells (92) are rotatably arranged at both ends of the fixed shell (92) by rotating hinges (94). A return spring (96) is arranged between two adjacent sets of fixed shells (92). Hinge limiting plates (95) are fixedly mounted on the piston rods at both ends of the multi-stage bidirectional hydraulic cylinder (91). The rock sample boring and milling device (7) opens grooves of different gradients, and the water flow release device (9) controls the water flow according to the number of grooves opened on the rock sample.

2. The water flow test and observation device based on rock mechanics according to claim 1, characterized in that: The rock sample fixing and calibration device (6) includes a fixing plate (61), which is fixedly mounted on the center of the drive slider at the upper end of the first guide rail (2). A pad (62) is fixedly mounted on the center of the pad (62). A drive rod (63) is rotatably mounted on the pad (62). A transmission connecting rod (64) is rotatably mounted on both ends of the drive rod (63). A sliding plate (66) is rotatably mounted on the other end of the transmission connecting rod (64). Two sets of hydraulic rods (65) are horizontally fixedly mounted on the fixing plate (61). The other ends of the two sets of hydraulic rods (65) are fixedly mounted on the right sliding plate (66). Four sets of second guide rails (67) are fixedly mounted on both sides of the fixing plate (61). Two sets of sliding plates (66) are slidably mounted on each of them. Four sets of self-locking telescopic rods (68) are fixedly mounted on the fixing plate (61) along the central circumference. A receiving plate (69) is fixedly mounted on them.

3. The water flow test and observation device based on rock mechanics according to claim 2, characterized in that: The sliding plate (66) is rotatably fitted with a rotating block (611) on its inner side, and a clamping fixing plate (612) is fixedly fitted on it.

4. The water flow test and observation device based on rock mechanics according to claim 2, characterized in that: Compared with the left rock sample fixing and calibration device (6), the right rock sample fixing and calibration device (6) has two sets of first hydraulic cylinders (610) and two sets of self-locking telescopic rods (68) arranged between the receiving plate (69) and the fixing plate (61). The sliding plate (66) has a horizontal sliding track on its inner side, on which a rotating block (611) is slidably mounted. The rotating block (611) is rotatably mounted with a clamping fixing plate (612).

5. The water flow test and observation device based on rock mechanics according to claim 1, characterized in that: The rock sample boring and milling device (7) includes a third guide rail (71), which is vertically fixed on the inner wall of the rear side of the device housing (1). An electric slider (72) is slidably mounted on the third guide rail (71). A second hydraulic cylinder (73) is fixedly mounted at the center of the electric slider (72). A boring and milling assembly (74) is fixedly mounted at the piston end of the second hydraulic cylinder (73). A drive motor (75) is fixedly mounted at the upper end of the boring and milling assembly (74), and a milling cutter (76) is fixedly mounted at the lower end of the assembly.

6. The water flow test and observation device based on rock mechanics according to claim 1, characterized in that: The fixed shell (92) is equipped with a water outlet pipe (93), which is connected to the bottom of the water storage tank (11) via a hose at its rear.

7. The water flow test and observation device based on rock mechanics according to claim 4, characterized in that: The piston of the double-rod hydraulic cylinder (4) is equipped with a scanner (13), which is externally connected to the display screen.

8. A method for observing water flow based on rock mechanics, using the water flow observation device based on rock mechanics as described in claim 7, characterized in that: Includes the following steps: S1. Select a suitable rock sample and set the running path of the rock sample boring and milling device (7) and the extension length of the multi-stage bidirectional hydraulic cylinder (91) according to the experimental requirements; S2. Place the test rock sample on the two sets of rock sample fixing and calibration devices (6), drive them to clamp, and move them to the bottom of the rock sample boring and milling device (7); S3. Adjust the first hydraulic cylinder (610) of the right-side rock sample fixing and calibration device (6) so that the rock sample boring and milling device (7) mills out a suitable groove; S4. After completion, reset and drive the two sets of rock sample fixing and calibration devices (6) to slide to the right until the right side plane of the rock sample coincides with the water passage plate (12). Start the two sets of double-rod hydraulic cylinders (4) to make the two sets of rock sample fixing plates (5) clamp the rock sample. S5. Start the robotic arm (8) to place the water release device (9) in the groove of the rock sample, open the water storage tank (11), and adjust the flow rate according to the experimental requirements; S6. Water flows out through the perforated plate (12) and falls into the circulating water tank (3), and returns to the storage tank (11) through the circulating water pump (10); S7. The permeability of each groove under water flow conditions is displayed on the external screen in real time by the scanner (13) on the double-bar hydraulic cylinder (4) for observation.

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