Intelligent geological structure stress field simulation system and use method thereof

Abstract

The invention discloses an intelligent geological structure stress field simulation system and a use method thereof.The intelligent geological structure stress field simulation system comprises a geological structure simulation site, an integrated control system is installed on the geological structure simulation site, a supporting frame is installed on the geological structure simulation site, and a geological simulation area is arranged at the front end of the geological structure simulation site; the support frame is provided with a connecting center, one side of the connecting center is provided with an impact mechanism, the other side of the connecting center is provided with a sampling mechanism, the sampling mechanism is internally connected with a linkage mechanism, and the other end of the linkage mechanism is connected with the impact mechanism; the driving requirements of the impact mechanism and the sampling mechanism are integrated through the linkage mechanism, the geological impact hammer and the sampling drill bit can be synchronously driven only through a single driving source (the first driving motor), energy redundancy caused by parallel work of traditional double motors is thoroughly eliminated, and compared with a traditional system, energy consumption is reduced, and the energy utilization efficiency is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of geological exploration, in particular to an intelligent geological structure stress field simulation system and a use method thereof. BACKGROUND

[0002] The intelligent geological structure stress field simulation system is a comprehensive system combining geology, mechanics, computer science and artificial intelligence technology, which is used for simulating and analyzing the stress distribution, evolution law and influence on geological activities (such as earthquakes, fault activities, oil and gas migration, etc.) in the crustal structure movement, and the core goal is to improve the geological prediction accuracy, optimize the resource exploration and development efficiency, and provide a scientific basis for geological disaster prevention. In the existing environmental simulation geological exploration, in the simulation of extreme environment geological exploration task, in the traditional simulation, because the impact hammer and the sample collecting device are designed, the impact head applies periodic impact force to the rock stratum, and the surrounding geology can be drilled into the geology by the sampling device for sampling, but there are the following obvious disadvantages, the system needs to supply power to the impact hammer and the sampling device respectively, that is, two motors need to be prepared for driving at the same time, the energy consumption is significantly increased, the parallel operation of the two motors not only needs complex circuit design and energy management, but also needs an additional control system to adjust the operation state of the two devices respectively, which leads to the increase of the design and implementation cost of the system, and further may increase the maintenance cost in the later stage, such as the inspection, replacement of the motor and the troubleshooting of the system, therefore, the present application provides an intelligent geological structure stress field simulation system and a use method thereof. SUMMARY

[0003] In order to overcome the shortcomings of the prior art, the present application provides an intelligent geological structure stress field simulation system and a use method thereof, which integrates the driving requirements of the impact mechanism and the sampling mechanism through the linkage mechanism, and only a single driving source (first driving motor) is needed to synchronously drive the geological impact hammer and the sampling drill bit, completely eliminating the energy redundancy of the traditional double-motor parallel operation. Compared with the traditional system, the energy consumption is reduced, and the energy utilization efficiency is significantly improved. In the soft geological mode, the linkage can be quickly released, and the second driving motor is independently started for low-power sampling; in the hard stratum, the linkage mechanism converts the reciprocating motion of the sliding block into the forward and reverse rotation power of the sampling drill bit without additional power supply, and the two modes can be intelligently switched according to the geological conditions, further optimizing the energy distribution efficiency.

[0004] To solve the above technical problems, the present application provides the following technical scheme: a kind of intelligent geologic structure stress field simulation system, including geologic structure simulation site, integrated control system is installed and arranged on the geologic structure simulation site, support frame is installed and arranged on the geologic structure simulation site, geologic simulation area is provided at the front of the geologic structure simulation site, connecting center is provided on the support frame, impact mechanism is installed and arranged on the side of the connecting center, sampling mechanism is installed and arranged on the other side of the connecting center, linkage mechanism is connected in the sampling mechanism, the other end of the linkage mechanism is connected with impact mechanism, the impact mechanism and linkage mechanism are fixed and detached by thread connection with synchronous work of sampling mechanism driven by a drive source, linkage mechanism and impact mechanism are fixed and detached by thread connection.

[0005] As a preferred technical scheme of the present application, the impact mechanism includes a first mounting frame mounted and fixed on the outer wall of the connecting center, a first drive motor provided on the top end of the first mounting frame, a swing arm fixed with the output shaft of the first drive motor, a connecting rod having one end movably connected with the swing arm, a hinged seat hingedly connected with the other end of the connecting rod, a sliding block connected with the hinged seat, a sliding groove opened in the first mounting frame and slidably connected with the sliding block, and a geologic impact hammer mounted on the bottom end outer wall of the sliding block.

[0006] As a preferred technical scheme of the present application, the swing arm rotates one circle to drive the sliding block to reciprocate up and down in the sliding groove once.

[0007] As a preferred technical scheme of the present application, the upper end of the connecting rod is provided as a ball, and the upper end of the connecting rod is movably connected with the swing arm universal joint.

[0008] As a preferred technical scheme of the present application, the first mounting frame is provided with a linkage mechanism, and the linkage mechanism penetrates through the first mounting frame and is threadedly connected with the sliding block.

[0009] As a preferred technical scheme of the present application, the linkage mechanism includes a slot opened in the side wall of the first mounting frame, a threaded groove provided in the sliding block, an external thread threadedly connected with the threaded groove, a movable rod provided with the external thread, and a sleeve rod slidably connected with the movable rod.

[0010] As a preferred technical scheme of the present application, the slot penetrates through the first mounting frame to be opened into the sliding groove, and the end of the movable rod is provided with an external thread.

[0011] As a preferred technical scheme of the present application, the movable rod linearly slides and rotationally connects in the sleeve rod, and the sleeve rod is connected on the sampling mechanism.

[0012] As a preferred technical solution of the present application, the sampling mechanism comprises a second mounting frame mounted on the outer wall of the connecting center, a rotating column rotatably connected in the second mounting frame, a groove opened on the outer wall of the rotating column, a second driving motor mounted on the top end of the second mounting frame and having an output shaft connected with the rotating column, a driving shaft connected on the bottom end of the rotating column, and a sampling drill bit connected with the driving shaft; wherein a sleeve rod is connected in the groove.

[0013] The present application also provides a technical solution, a method for using an intelligent geological structure stress field simulation system, characterized by comprising the following steps: S1, firmly install the support frame on the geological structure simulation site, ensure its perpendicularity and levelness, check whether the impact mechanism and the sampling mechanism on both sides of the connecting center are firmly installed, confirm that the linkage mechanism (movable rod, sleeve rod) is in an operable state, and perform self-checking through the integrated control system to ensure that the first driving motor and the second driving motor are operating normally; S2, according to the experimental requirements, fill the simulated soil or rock (loose sand, clay, hard rock, etc.) in the geological simulation area, adjust the initial height of the geological impact hammer and the sampling drill bit to avoid early contact with the simulated stratum; S3, adjust the geological simulation area to a soft geological independent sampling mode; S3.1, disconnect the linkage mechanism, rotate the movable rod counterclockwise to make the external thread exit from the thread groove of the sliding block, pull the movable rod back into the sleeve rod completely, ensure that it is disconnected from the groove, disconnect the impact mechanism and the sampling mechanism, and check whether the groove and the sleeve rod are separated to avoid motion interference; S3.2, start the second driving motor through the integrated control system, drive the rotating column to rotate the driving shaft and the sampling drill bit clockwise, control the drill bit to slowly press down to the simulated stratum, use the blade to cut the soil, and the debris is discharged to the ground through the drill bit blade or the discharge channel, pause according to the preset depth (such as every 0.5 meters), collect the discharged debris samples, and package after labeling the depth interval; S4, adjust the geological simulation area to a hardening geological impact-sampling linkage mode; S4.1, connect the linkage mechanism, pull the movable rod outward to make it slide out of the sleeve rod, extend through the groove to the position of the thread groove of the sliding block, rotate the movable rod clockwise to make the external thread engage with the thread groove and tighten, ensure that the sliding block and the groove are rigidly connected through the sleeve rod, and verify the tightness of the linkage mechanism: manually push the sliding block up and down, and observe whether the rotating column rotates with it; S4.2, start the impact mechanism and the linkage sampling, turn off the second driving motor, start the first driving motor through the integrated control system, rotate the swing arm with the motor, convert the circular motion into the linear reciprocating motion of the sliding block in the sliding groove through the connecting rod connected by the universal joint, and the swing arm rotates one circle, the sliding block drives the geological impact hammer to complete one press-down impact (break hard rock) and one lifting reset. S4.3, the impact force is transmitted to the sampling mechanism, the up and down movement of the slider pushes the sleeve rod through the movable rod, forcing the rotating column to rotate alternately in the groove, the sampling drill bit rotates with the driving shaft, and the broken rock is discharged through the drill bit spiral blade or external discharge system; S4.4, synchronous sampling and data recording, during the impact process, the impact frequency, depth and rotation speed data of the geological impact hammer are collected in real time (through the integrated control system sensor), the discharged debris is collected according to the impact times or depth interval, and is marked as "impact-coupling mode sample", and the corresponding impact parameters are recorded; S5, stop the device and disassemble, turn off the first driving motor or the second driving motor, lift the drill bit and the impact hammer to a safe height, soft mode: keep the coupling mechanism disconnected, clean the sampling drill bit blade, hard mode: rotate the movable rod counterclockwise to exit the threaded groove, reset to the sleeve rod, and disassemble the geological impact hammer (if replacement or maintenance is required); S6, sample processing and data analysis, the collected debris samples are classified according to the mode (independent sampling / impact coupling), laboratory analysis (such as particle size, composition, density) is performed, and the stress field distribution characteristics of the simulated stratum are simulated in combination with the impact force, rotation speed and other parameters recorded by the integrated control system; S7, check the lubrication state of the sliding groove and the slider, clean the debris residue, verify the connection stability of the universal joint connecting rod and the swing arm, replace the worn ball head if necessary, calibrate the sensor data accuracy of the integrated control system, and update the control program parameters.

[0014] Compared with the prior art, the present application has the following beneficial effects: 1. The driving requirements of the impact mechanism and the sampling mechanism are integrated through the coupling mechanism, only a single driving source (first driving motor) is required to synchronously drive the geological impact hammer and the sampling drill bit, the energy redundancy of the traditional double-motor parallel operation is completely eliminated, the energy consumption is reduced compared with the traditional system, the energy utilization efficiency is significantly improved, in the soft geological mode, the coupling can be quickly released, and the second driving motor can be independently started for low-power sampling; in the hard stratum, the coupling mechanism converts the reciprocating motion of the slider into the forward and reverse rotation power of the sampling drill bit, without the need for additional power supply, the two modes can be intelligently switched according to the geological conditions, and the energy distribution efficiency is further optimized.

[0015] 2. Through the threaded coupling of the slider, the movable rod and the sleeve rod, the mechanical coupling of the impact and sampling actions is realized, and the complex multi-motor synchronous control circuit is omitted. The system only needs to control the speed and start-stop of a single driving source, the circuit design complexity is reduced, the coupling mechanism adopts a quick connection method of external thread and threaded groove, the impact-sampling coupling state can be manually switched without the need for special tools, the detachable connection of the impact hammer and the slider further simplifies the maintenance process and reduces the cost of spare parts replacement.

[0016] 3. Under the hard stratum, the up-down reciprocating movement of the sliding block is converted into the forward-reverse rotation cutting action of the sampling drill bit through the linkage mechanism, and the forward-reverse rotation frequency is strictly synchronized with the impact frequency (secondary impact corresponds to secondary forward-reverse rotation). This design breaks through the cutting limitation of the traditional one-way drill bit, improves the hard rock breaking efficiency, and significantly improves the continuity of debris discharge. Independent sampling under soft geological conditions can avoid the damage of impact vibration to the loose structure; under the linkage mode of hard stratum, the "vibration crushing + rotary debris removal" complex effect is formed through the transmission of shock wave and dynamic cutting of the drill bit, which is especially suitable for complex rock mass simulation containing fissures or stratification structure, and has wider geological adaptability.

[0017] 4. The linkage mechanism directly converts the linear kinetic energy of the impact mechanism into the rotary kinetic energy of the sampling mechanism, avoiding the overload risk caused by uneven load of the traditional double motor. The working load distribution of the single driving source is more balanced, the expected service life of the motor is improved, the impact mechanism and the sampling mechanism can operate independently after the linkage is released, and the basic functions of either module are not affected when the other module fails, the system fault tolerance is significantly improved, and the maintenance cycle is prolonged.

[0018] 5. The crank slider mechanism composed of swing arm-linkage-sliding block ensures that the impact frequency and stroke of the impact hammer are strictly controllable (each complete impact corresponds to a swing arm rotation), and cooperates with the forward-reverse rotation phase locking of the sampling drill bit to realize the spatio-temporal synchronization of stress field disturbance and sample collection, and reduce the experimental data error rate. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a schematic diagram of the structure of the present application; Figure 2 is a schematic diagram of the structure of the present application; Figure 3 is a schematic diagram of the structure of the present application; Figure 4 is a schematic diagram of the structure of the present application; Figure 5 is a schematic diagram of the structure of the present application; Figure 6 is a schematic diagram of the structure of the present application; Figure 5 is a schematic diagram of the structure of the present application; Figure 7 is a schematic diagram of the structure of the present application.

[0020] Among them: 1. geological structure simulation site; 2. integrated control system; 3. support frame; 4. geological simulation area; 5. connection center; 6. impact mechanism; 61. first mounting frame; 62. first drive motor; 63. swing arm; 64. connecting rod; 65. articulated seat; 66. slider; 67. slide groove; 68. geological impact hammer; 7. linkage mechanism; 71. slot; 72. thread groove; 73. sleeve rod; 74. movable rod; 75. external thread; 8. sampling mechanism; 81. second mounting frame; 82. rotating column; 83. groove; 84. second drive motor; 85. drive shaft; 86. sampling drill bit. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, purpose and efficacy of the present invention easy to understand, the present invention is further described below in conjunction with specific examples, but the following examples are only preferred embodiments of the present invention, not all. Based on the examples in the implementation manner, other embodiments obtained by those skilled in the art without making creative work are all within the scope of protection of the present invention. The experimental methods in the following examples, unless otherwise specified, are all conventional methods, and the materials, reagents, etc. used in the following examples, unless otherwise specified, can be obtained from commercial channels.

[0022] Example: Example 1: Figure 1 - Figure 7 As shown, this embodiment proposes an intelligent geological structure stress field simulation system, wherein an integrated control system 2 is installed on a geological structure simulation site 1, a support frame 3 is installed on the geological structure simulation site 1, a geological simulation area 4 is provided at the front end of the geological structure simulation site 1, a connection center 5 is provided on the support frame 3, an impact mechanism 6 is installed on one side of the connection center 5, and a sampling mechanism 8 is installed on the other side of the connection center 5, a linkage mechanism 7 is connected inside the sampling mechanism 8, the other end of the linkage mechanism 7 is connected to the impact mechanism 6, the impact mechanism 6 and the linkage mechanism 7 cooperate to drive the sampling mechanism 8 to work synchronously through a driving source, and the linkage mechanism 7 and the impact mechanism 6 are threadedly connected for fixation and disassembly; The impact mechanism 6 includes a first mounting frame 61 fixed to the outer wall of the connection center 5, a first drive motor 62 provided on the top of the first mounting frame 61, a swing arm 63 fixed to the output shaft of the first drive motor 62, a connecting rod 64 movably connected to the swing arm 63 at one end, an articulated seat 65 hinged to the other end of the connecting rod 64, a slider 66 connected to the articulated seat 65, a slide groove 67 provided on the first mounting frame 61 and slidably connected to the slider 66, and a geological impact hammer 68 installed on the outer wall of the bottom end of the slider 66; The first mounting frame 61 is provided with a linkage mechanism 7, the linkage mechanism 7 is in threaded connection with the sliding block 66 through the first mounting frame 61, the linkage mechanism 7 (movable rod + sleeve rod) is used as a physical connection medium of the impact mechanism 6 and the sampling mechanism 8, and power transmission and separation of the two are realized through threaded connection, the linkage mechanism 7 comprises a slot 71 provided on the side wall of the first mounting frame 61, a threaded groove 72 arranged in the sliding block 66, an external thread 75 in threaded connection with the threaded groove 72, a movable rod 74 provided with the external thread 75, and a sleeve rod 73 in sliding connection with the movable rod 74; The sampling mechanism 8 comprises a second mounting frame 81 mounted on the outer wall of the connecting center 5, a rotating column 82 rotatably connected in the second mounting frame 81, a groove 83 provided on the outer wall of the rotating column 82, a second driving motor 84 mounted on the top end of the second mounting frame 81 and with an output shaft connected with the rotating column 82, a driving shaft 85 connected on the bottom end of the rotating column 82, and a sampling drill bit 86 connected with the driving shaft 85; wherein the sleeve rod 73 is connected in the groove 83; When the geological simulation area 4 simulates soft geology, the staff can rotate the movable rod 74, so that the movable rod 74 is rotated outward in the sleeve rod 73, so that the end of the movable rod 74 is rotated outward through cooperation of the external thread 75 and the threaded groove 72, until the movable rod 74 is pulled out of the threaded groove 72 and moves to the sleeve rod 73 away from the slot 71, the connection between the impact mechanism 6 and the sampling mechanism 8 is released, at this time, the driving switch of the second driving motor 84 can be pressed to directly drive the rotating column 82 to rotate, the rotating column 82 drives the sampling drill bit 86 to rotate through the driving shaft 85, the blades on the sampling drill bit 86 cut the soil, and the blades continuously take out the soil cuttings from the ground after cutting the soil for collection and sampling; When the geological simulation area 4 simulates the geological complexity hardening, the slot 71 is arranged in the first mounting frame 61 to the sliding groove 67, the end of the movable rod 74 is provided with an external thread 75, the slot 71 extends into the sliding groove 67 to provide a guide path for the sliding of the movable rod 74, and the external thread 75 and the thread groove 72 are matched to allow manual rotation operation (without tools), so as to meet the efficiency requirement of rapid switching mode in the field or laboratory environment, the staff can pull the movable rod 74 outward, so that the movable rod 74 slides outward in the sleeve rod 73 and is inserted into the thread groove 72, at this time, the movable rod 74 is rotated to make the external thread 75 and the thread groove 72 cooperate to rotate inward and tighten, so that the sliding block 66 is connected with the groove 83 through the linkage mechanism 7, at this time, the first driving motor 62 is started to drive the swing arm 63 to rotate, it is to be explained that the upper end of the connecting rod 64 is provided as a ball, the upper end of the connecting rod 64 is connected with the swing arm 63 through a universal joint, the swing arm 63 rotates to drive the ball at the end of the connecting rod 64 to rotate, so as to drive the other end to move linearly, when the swing arm 63 rotates, the upper end of the connecting rod 64 needs to adapt to the circumferential motion track of the swing arm 63, and the sliding block 66 can only move linearly along the sliding groove 67, the ball universal joint can compensate the geometric deviation of the motion tracks of the two, so as to avoid that the mechanism is stuck or additional stress is generated, the other end of the connecting rod 64 drives the hinged seat 65 to move, the hinged seat 65 slides up and down in the sliding groove 67 through the sliding block 66, and the sliding block 66 reciprocatingly moves up and down to drive the geological impact hammer 68 to impact and crush the geology of the geological simulation area 4, the movable rod 74 linearly slides and rotates in the sleeve rod 73, and the sleeve rod 73 is connected with the sampling mechanism 8, in the connection / separation mode, the movable rod 74 needs to slide axially along the sleeve rod 73 to align the thread groove 72, so as to realize the space adjustment of mechanical docking, in the thread tightening / loosening mode, the movable rod 74 needs to rotate to complete the thread engagement or disengagement, the sliding bearing design on the inner wall of the sleeve rod 73 ensures smooth rotation, at the same time, the movable rod 74 follows the sliding block 66 to slide in the groove 83 through the sleeve rod 73, so as to drive the rotating column 82 to rotate, the rotating column 82 rotates to drive the sampling drill bit 86 to rotate through the driving shaft 85, it is to be noted that the second driving motor 84 is not working at this time, and there is only one driving source of the first driving motor 62, in addition, the reciprocating movement of the sliding block 66 drives the sampling drill bit 86 to rotate forward and reverse once, and the sampling drill bit 86 rotating forward and reverse is more likely to damage the geology and sample the debris.

[0023] It is worth noting that the swing arm 63 rotates one circle to drive the slider 66 to slide back and forth in the slide groove 67 once. The bottom end of the slider 66 is detachably connected to the geological impact hammer 68. The swing arm 63-connecting rod 64-slider 66 forms a crank slider mechanism. Every time the swing arm 63 rotates one circle, the slider 66 completes an up and down impact. This design ensures that the impact frequency strictly corresponds to the mechanical cycle, which is convenient for controlling the matching of impact energy and sampling rhythm. It allows the replacement of hammer heads of different weights or materials to adjust the impact force (for example, hard rock layers require heavy hammers and loose layers use light hammers). The radius of the swing arm 63 is adjustable (implicit design): if the length of the swing arm 63 is variable, the stroke of the slider 66 can be further adjusted to meet different impact depth requirements; In summary, it can be summarized as soft geology (independent sampling mode): The linkage is disconnected, and the second drive motor 84 directly drives the sampling drill bit 86 to rotate and cut, avoiding impact disturbance that may cause the hole wall to collapse, and obtaining a relatively complete debris sample.

[0024] Hardened geology (linked impact-sampling mode): While the geological impact hammer 68 breaks the rock layer, the sampling drill bit 86 cuts forward and reversely through the linkage mechanism 7, thereby improving the efficiency of debris discharge and solving the problem of difficult hard rock sampling.

[0025] Example 2: Figures 1-7 As shown, a method for using an intelligent geological structure stress field simulation system is characterized by comprising the following steps: S1. Securely install the support frame 3 on the geological structure simulation site 1, ensuring its verticality and horizontality. Check whether the impact mechanism 6 and the sampling mechanism 8 on both sides of the connection center 5 are securely installed. Confirm that the linkage mechanism 7 (movable rod 74, sleeve rod 73) is in an operable state. Perform a power-on self-test on the integrated control system 2 to ensure that the first drive motor 62 and the second drive motor 84 are operating normally. S2. Fill the geological simulation area 4 with simulated soil or rock (loose sand, clay, hard rock, etc.) according to experimental requirements, and adjust the initial heights of the geological impact hammer 68 and the sampling drill bit 86 to avoid premature contact with the simulated stratum; S3, geological simulation area 4 was adjusted to the soft geology independent sampling mode; S3.1. Disconnect the linkage mechanism 7. The operator rotates the movable rod 74 counterclockwise to remove the external thread 75 from the thread groove 72 of the slider 66. Pull the movable rod 74 completely back into the sleeve rod 73 to ensure that it is disengaged from the slot 71. This disconnects the impact mechanism 6 from the sampling mechanism 8. Check that the groove 83 is separated from the sleeve rod 73 to avoid motion interference. S3.2. Activate second drive motor 84 through integrated control system 2, driving shaft 85 and sampling drill bit 86 to rotate clockwise. The drill bit is slowly lowered into the simulated stratum, where the blades cut the soil. Debris is discharged to the surface through the drill blades or discharge channels. Pause at preset depths (e.g., every 0.5 meters), collect samples of the discharged debris, mark the depth intervals, and package them. S4, geological simulation area 4 is adjusted to hardening geological impact-sampling linkage mode; S4.1. Connect linkage mechanism 7. Pull movable rod 74 outward so that it slides out from sleeve rod 73 and extends through slot 71 to the position of thread groove 72 of slider 66. Rotate movable rod 74 clockwise to engage external thread 75 with thread groove 72 and tighten. Ensure that slider 66 is rigidly connected to groove 83 through sleeve rod 73. Verify the tightness of linkage mechanism 7 by manually pushing slider 66 up and down and observing whether rotating column 82 rotates accordingly. S4.2. Start the impact mechanism 6 and the linked sampling mechanism. Turn off the second drive motor 84 and start the first drive motor 62 via the integrated control system 2. The swing arm 63 rotates with the motor. The connecting rod 64, connected via a universal joint, converts the circular motion into linear reciprocating motion of the slider 66 within the chute 67. With each rotation of the swing arm 63, the slider 66 drives the geological impact hammer 68 to perform a downward impact (breaking hard rock) and an upward reset. S4.3. The impact force is transmitted to the sampling mechanism 8. The up and down movement of the slider 66 pushes the sleeve rod 73 via the movable rod 74, forcing the rotating column 82 to rotate alternately forward and reverse in the groove 83. The sampling drill bit 86 cuts forward and reverse along with the drive shaft 85, and the crushed rock cuttings are discharged through the drill bit spiral blades or the external slag discharge system. S4.4. Synchronous sampling and data recording: During the impact process, the impact frequency and depth of the geological impact hammer 68 and the rotation speed data of the sampling drill bit 86 are collected in real time (via the integrated control system 2 sensor). The discharged debris is collected according to the number of impacts or depth intervals, marked as "impact-linkage mode samples", and the corresponding impact parameters are recorded; S5. Stop the equipment and disassemble. Turn off the first drive motor 62 or the second drive motor 84. Raise the drill bit and the impact hammer to a safe height. In the loosening mode, keep the linkage mechanism 7 disconnected. Clean the blade of the sampling drill bit 86. In the hardening mode, rotate the movable rod 74 counterclockwise to exit the thread groove 72 and return it to the sleeve rod 73. Remove the geological impact hammer 68 (if replacement or maintenance is required). S6. Sample processing and data analysis: the collected debris samples are classified by mode (independent sampling / impact linkage), and laboratory analysis (such as particle size, composition, and density) is performed. Combined with the impact force, rotation speed and other parameters recorded by the integrated control system 2, the stress field distribution characteristics of the simulated formation are inverted; S7, check the lubrication state of the sliding groove 67 and the sliding block 66, clean up the debris, verify the stability of the joint between the universal joint connecting rod 64 and the swing arm 63, replace the worn ball head if necessary, calibrate the sensor data accuracy of the integrated control system 2, and update the control program parameters.

[0026] In the present application, unless otherwise explicitly specified and limited, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, "on", "above" and "over" of a first feature to a second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. "Under", "below" and "under" of a first feature to a second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0027] The above shows and describes the basic principles, main features and advantages of the present application. It should be understood by those skilled in the art that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only preferred examples of the present application and are not intended to limit the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. An intelligent geological structure stress field simulation system, comprising a geological structure simulation site (1), characterized in that: The geological structure simulation site (1) is provided with an integrated control system (2), the geological structure simulation site (1) is provided with a support frame (3), the front end of the geological structure simulation site (1) is provided with a geological simulation area (4), the support frame (3) is provided with a connection center (5), an impact mechanism (6) is provided on one side of the connection center (5), a sampling mechanism (8) is provided on the other side of the connection center (5), a linkage mechanism (7) is connected inside the sampling mechanism (8), the other end of the linkage mechanism (7) is connected to the impact mechanism (6), the impact mechanism (6) and the linkage mechanism (7) cooperate to drive the sampling mechanism (8) to work synchronously through a driving source, and the linkage mechanism (7) and the impact mechanism (6) are threadedly connected for fixing and disassembly.

2. The intelligent geological structure stress field simulation system according to claim 1, characterized in that: The impact mechanism (6) includes a first mounting frame (61) fixedly mounted on the outer wall of the connection center (5), a first drive motor (62) arranged on the top of the first mounting frame (61), a swing arm (63) fixed to the output shaft of the first drive motor (62), a connecting rod (64) movably connected to the swing arm (63) at one end, an articulated seat (65) hinged to the other end of the connecting rod (64), a slider (66) connected to the articulated seat (65), a slide groove (67) opened on the first mounting frame (61) and slidably connected to the slider (66), and a geological impact hammer (68) mounted on the outer wall of the bottom end of the slider (66).

3. The intelligent geological structure stress field simulation system according to claim 2, characterized in that: The swing arm (63) rotates one circle to drive the slider (66) to slide back and forth in the slide groove (67) once, and the bottom end of the slider (66) is detachably connected to the geological impact hammer (68).

4. The intelligent geological structure stress field simulation system according to claim 2, characterized in that: The upper end of the connecting rod (64) is configured as a sphere, and the upper end of the connecting rod (64) is movably connected to the universal joint of the swing arm (63).

5. The intelligent geological structure stress field simulation system according to claim 2, characterized in that: A linkage mechanism (7) is provided on the first mounting frame (61), and the linkage mechanism (7) passes through the first mounting frame (61) and is threadedly connected to the slider (66).

6. The intelligent geological structure stress field simulation system according to claim 5, characterized in that: The linkage mechanism (7) includes a slot (71) provided on a side wall of the first mounting frame (61), a threaded slot (72) provided in the slider (66), an external thread (75) threadedly connected to the threaded slot (72), a movable rod (74) provided with the external thread (75), and a sleeve rod (73) slidably connected to the movable rod (74).

7. The intelligent geological structure stress field simulation system according to claim 6, characterized in that: The slot (71) passes through the first mounting frame (61) and is opened into the sliding slot (67). The end of the movable rod (74) is provided with an external thread (75).

8. The intelligent geological structure stress field simulation system according to claim 6, characterized in that: The movable rod (74) linearly slides and is rotationally connected within the sleeve rod (73), and the sleeve rod (73) is connected to the sampling mechanism (8).

9. The intelligent geological structure stress field simulation system according to claim 8, characterized in that: The sampling mechanism (8) comprises a second mounting frame (81) mounted on the outer wall of the connection center (5), a rotating column (82) rotatably connected to the second mounting frame (81), a groove (83) provided on the outer wall of the rotating column (82), a second driving motor (84) mounted on the top end of the second mounting frame (81) and having an output shaft connected to the rotating column (82), a driving shaft (85) connected to the bottom end of the rotating column (82), and a sampling drill bit (86) connected to the driving shaft (85); wherein a sleeve rod (73) is connected to the groove (83).

10. A method for using an intelligent geological structure stress field simulation system according to any one of claims 1 to 9, characterized in that: S1. Install the support frame (3) firmly on the geological structure simulation site (1), ensure its verticality and horizontality, check whether the impact mechanism (6) and the sampling mechanism (8) on both sides of the connection center (5) are firmly installed, confirm that the movable rod (74) and the sleeve rod (73) of the linkage mechanism (7) are in an operable state, and ensure that the first drive motor (62) and the second drive motor (84) are operating normally through the integrated control system (2) power-on self-test; S2. Fill the geological simulation area (4) with simulated soil or rock, loose sand, clay, or hard rock according to the experimental requirements, and adjust the initial heights of the geological impact hammer (68) and the sampling drill bit (86) to avoid premature contact with the simulated stratum; S3, geological simulation area (4) is adjusted to the soft geological independent sampling mode; S4. Disconnect the linkage mechanism (7). The operator rotates the movable rod (74) counterclockwise to withdraw the external thread (75) from the thread groove (72) of the slider (66). The movable rod (74) is completely pulled back into the sleeve rod (73) to ensure that it is disengaged from the slot (71). The connection between the impact mechanism (6) and the sampling mechanism (8) is released. The operator checks whether the groove (83) and the sleeve rod (73) are separated to avoid motion interference. S5. Turn on the second drive motor (84) through the integrated control system (2), drive the rotating column (82) to drive the drive shaft (85) and the sampling drill bit (86) to rotate clockwise, control the drill bit to slowly press down to the simulated stratum, use the blade to cut the soil, and discharge the debris to the surface through the drill bit blade or the slag discharge channel. Pause every 0.5 meters at the preset depth, collect the discharged debris samples, mark the depth interval, and then package; S6, geological simulation area (4) is adjusted to the hardening geological impact sampling linkage mode; S7, connect the linkage mechanism (7), pull the movable rod (74) outward, make it slide out from the sleeve rod (73), pass through the slot (71) and extend to the position of the thread groove (72) of the slider (66), rotate the movable rod (74) clockwise to engage the external thread (75) with the thread groove (72) and tighten it, ensure that the slider (66) and the groove (83) are rigidly connected through the sleeve rod (73), and verify the tightness of the linkage mechanism (7): manually push the slider (66) up and down to observe whether the rotating column (82) rotates accordingly; S8, start the impact mechanism (6) and the linkage sampling, turn off the second drive motor (84), start the first drive motor (62) through the integrated control system (2), the swing arm (63) rotates with the motor, and the connecting rod (64) connected by the universal joint converts the circular motion into a linear reciprocating motion of the slider (66) in the slide groove (67). Every time the swing arm (63) rotates one circle, the slider (66) drives the geological impact hammer (68) to complete a downward impact to crush the hard rock and an upward reset; S9, the impact force is transmitted to the sampling mechanism (8), the up and down movement of the slider (66) pushes the sleeve rod (73) through the movable rod (74), forcing the rotating column (82) to rotate alternately in the groove (83) in the forward and reverse directions, and the sampling drill bit (86) cuts in the forward and reverse directions along with the drive shaft (85), and the broken rock cuttings are discharged through the drill bit spiral blades or the external slag discharge system; S10, synchronous sampling and data recording, during the impact process, real-time data of the impact frequency, depth and speed of the sampling drill bit (86) of the geological impact hammer (68) are collected, and the discharged debris is collected according to the impact number or depth interval, marked as an impact linkage mode sample, and the corresponding impact parameters are recorded; S11, stop the equipment and disassemble, turn off the first drive motor (62) or the second drive motor (84), lift the drill bit and the impact hammer to a safe height, loosen the mode: keep the linkage mechanism (7) disconnected, clean the blade of the sampling drill bit (86), harden the mode: rotate the movable rod (74) counterclockwise to exit the thread groove (72), reset it to the sleeve rod (73), and disassemble the geological impact hammer 68; S12, sample processing and data analysis, the collected debris samples are classified by pattern, and laboratory analysis is performed, and the stress field distribution characteristics of the formation are inverted and simulated in combination with the parameters recorded by the integrated control system (2); S13, check the lubrication status of the slide (67) and the slider (66), clean the debris residue, verify the connection stability of the universal joint connecting rod (64) and the swing arm (63), replace the worn ball head, calibrate the sensor data accuracy of the integrated control system (2), and update the control program parameters.

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