A drilling test bed capable of long-distance horizontal drilling and friction loading experiment

Abstract

The application discloses a drilling test bed capable of long-distance horizontal drilling and friction loading experiment, and relates to the technical field of drilling experiment equipment.The test bed comprises a base, hydraulic restraint devices and mechanical support devices, a movable track is fixed above the base, a movable frame is slidably assembled on the movable track, horizontal displacement is realized by driving two groups of synchronous hydraulic cylinders, a drill mast capable of 90-degree overturning adjustment is hingedly assembled on the movable frame, two groups of hydraulic cylinders are matched to realize horizontal and vertical state switching of the mast, and two-stage horizontal feeding operation is completed.The application realizes long-distance horizontal drilling support and stable constraint of a drill pipe by alternately and uniformly arranging multiple groups of hydraulic restraint devices and mechanical support devices in a 100-meter test interval, simultaneously simulates complex friction conditions in a drilling hole by relying on a pressing structure of the hydraulic restraint devices, and can complete drilling experiments under different friction forces, thereby solving the technical problems of large size, short drilling distance and single friction simulation of a traditional drilling test bed.

Description

Technical Field

[0001] This invention relates to the field of drilling test equipment technology, and in particular to a drilling test bench capable of long-distance horizontal drilling and friction loading tests. Background Technology

[0002] Horizontal drilling technology is widely used in geological exploration, trenchless pipeline laying, geotechnical engineering testing, and mine tunnel drilling. During drilling, the frictional resistance generated between the drill rod and the borehole wall, as well as the soil and rock media, is a core factor affecting drilling efficiency, drilling accuracy, drill rod lifespan, and borehole quality. To optimize drilling processes, improve drilling equipment performance, and accurately predict on-site drilling conditions, it is necessary to conduct numerous horizontal drilling simulation experiments and frictional resistance loading tests using a professional drilling test bench.

[0003] Current drilling test rigs suffer from numerous technical defects, severely limiting the accuracy and comprehensiveness of drilling experiments. Specific problems include: First, the mast of a traditional horizontal drilling test rig is a fixed vertical or extended horizontal structure. To meet the basic drilling stroke, the overall size of the equipment needs to be greatly increased. The equipment is difficult to assemble, transport and debug, and cannot achieve a compact layout. The laboratory site is poorly adaptable, and most of them only have a single-stage feed function with a single feed adjustment method, which cannot adapt to the drilling test requirements of different working conditions.

[0004] Secondly, the existing test benches have mostly localized short-distance support and constraint structures with few support points and short coverage distances. They can only complete short-distance horizontal drilling experiments within ten meters and cannot simulate the real working conditions of long-distance horizontal drilling of hundreds of meters on site. The experimental data deviates significantly from the actual engineering data and has low reference value.

[0005] Furthermore, traditional test benches can only provide constant frictional resistance through fixed counterweights and simple limiting structures. They cannot simulate complex frictional conditions such as uneven extrusion of soil and rock in boreholes, dynamic friction, and multi-level constraints. They cannot achieve dynamic and graded adjustable loading of frictional resistance, making it difficult to accurately reproduce the changing law of frictional resistance in the actual drilling process, resulting in biased and inaccurate experimental data.

[0006] Therefore, the present invention provides a drilling test bench capable of long-distance horizontal drilling and friction loading experiments. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a drilling test rig capable of long-distance horizontal drilling and friction loading experiments, thus solving the problems mentioned in the background section.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a drilling test rig capable of long-distance horizontal drilling and friction loading experiments, comprising a base and a horizontal target platform. A movable track is fixedly installed above the base, and a movable frame is slidably connected to the upper end of the movable track. Two hydraulic cylinders are symmetrically arranged inside the movable track, and the extension and retraction ends of the two hydraulic cylinders are fixedly connected to the bottom of one end of the movable frame. The synchronous extension and retraction of the two hydraulic cylinders can drive the movable frame to slide horizontally along the movable track. The upper end of the mobile frame is fixed with an intelligent drilling rig, which includes a power head and multiple detachable drill rods mounted on the drilling rig mast. It also includes multiple hydraulic constraint devices and multiple mechanical support devices, the drill rod passes through all the hydraulic constraint devices and mechanical support devices, the drill rod end is detachably equipped with a drill bit, and the front end of the drill rod is connected to the power head; It also includes a digital twin system and a monitoring system, both of which are connected to the intelligent drilling rig's electrical control system. The digital twin system is equipped with a PLC control system.

[0009] As a further technical solution of the present invention, a support base is fixed on the upper front side of the mobile frame, and two hydraulic cylinders are symmetrically hinged to the front end of the intelligent drilling rig. A drilling rig mast is hinged to the top of the support base, and the tops of the two hydraulic cylinders are hinged to the drilling rig mast. The synchronous extension and retraction of the two hydraulic cylinders can drive the drilling rig mast to complete a 90° rotation adjustment around the top of the support base.

[0010] As a further technical solution of the present invention, multiple hydraulic constraint devices and multiple mechanical support devices are evenly and alternately arranged on the same axis and at the same height on the horizontal ground. The number of each hydraulic constraint device and mechanical support device is set to at least 5, and the total distance between them can reach 100 meters, in order to ensure the coaxiality and stability of the drill rod during long-distance drilling.

[0011] As a further technical solution of the present invention, the hydraulic restraint device includes a fixed frame, a lifting cylinder, a lifting frame, a lifting slide, a guide wheel seat, a pressing seat, and a pressing cylinder. The bottom end of the lifting cylinder is hinged to the fixed frame, and the top end is hinged to the middle of the bottom end of the lifting frame. The inner wall of the fixed frame is symmetrically provided with lifting slides. The two ends of the lifting frame are equipped with lifting rollers. The lifting frame slides slide in cooperation with the lifting slide through the lifting rollers. The guide wheel seat is installed in the middle of the top of the lifting frame.

[0012] As a further technical solution of the present invention, the pressure seat is detachably installed on the upper end of the guide wheel seat, and the pressure cylinder is fixedly installed in the middle of the upper end of the pressure seat, with the telescopic end corresponding to the guide wheel seat. After the pressure cylinder extends, it can apply vertical pressure to the drill rod to form frictional resistance.

[0013] As a further technical solution of the present invention, the mechanical support device includes a fixed frame 2, a lifting cylinder 2, a lifting frame 2, a lifting slide groove 2, and a guide wheel seat 2. The bottom end of the lifting cylinder 2 is hinged to the middle of the inner side of the fixed frame 2, and the telescopic end is hinged to the middle of the bottom end of the lifting frame 2. The upper inner wall of the fixed frame 2 is symmetrically provided with lifting slide groove 2. The two ends of the lifting frame 2 are also provided with lifting rollers, and the two ends of the lifting frame 2 slide in cooperation with the lifting slide groove 2 through the lifting rollers. The guide wheel seat 2 is fixed to the middle of the top end of the lifting frame 2.

[0014] As a further technical solution of the present invention, the lifting cylinder one, lifting cylinder two, pressing cylinder, hydraulic cylinder one, and hydraulic cylinder two are all electrically connected to the PLC control system to realize automated synchronous regulation and precise displacement control.

[0015] As a further technical solution of the present invention, the intelligent drilling rig is equipped with a two-stage horizontal feed mode. When the drilling rig mast is horizontally lowered, the power head can independently complete the horizontal loading and propulsion, and at the same time, it can cooperate with the overall horizontal displacement of the moving frame to achieve compound feed operation.

[0016] As a further technical solution of the present invention, the monitoring system is a full-area monitoring layout with no blind spots, covering the entire test bench and the 100-meter drilling test area, eliminating blind spots for operators.

[0017] This invention provides a drilling test rig capable of long-distance horizontal drilling and friction loading experiments, which has the following advantages compared with the prior art: 1. This design presents a drilling test rig capable of long-distance horizontal drilling and friction loading experiments. Through the design of a flip-up drilling mast, it can quickly switch between horizontal and vertical working states. When drilling horizontally, there is no need to lengthen the mast structure, which significantly shortens the effective length of the mast and reduces the overall size of the equipment, solving the problem of bulky structure and large space occupation of traditional test rigs. At the same time, it is equipped with a two-stage horizontal feed mode, and the independent feed of the power head and the overall propulsion of the moving frame can be flexibly switched and coordinated to adapt to various drilling test conditions, greatly improving the adjustment flexibility.

[0018] 2. This design provides a drilling test rig capable of long-distance horizontal drilling and friction loading experiments. Within a 100-meter test distance, multiple sets of hydraulic constraint devices and mechanical support devices are evenly and alternately arranged. The multi-point, full-coverage support and constraint structure can accurately limit and support the long-distance spliced ​​drill rod throughout the entire process, effectively avoiding problems such as displacement, shaking, and bending deformation during the drilling of long drill rods. It can stably achieve long-distance horizontal drilling experiments at the hundred-meter level, perfectly reproduce the real working conditions of long-distance drilling on site, and greatly improve the authenticity of experimental data.

[0019] 3. This design presents a drilling test bench capable of long-distance horizontal drilling and friction loading experiments. Through a hydraulic constraint device with a lifting and adjusting structure, it can precisely adapt to the axial height of drill rods of different specifications. Combined with a downward-pressing cylinder, it can apply vertical pressure of varying magnitudes to the drill rod, forming continuously adjustable and graded controllable frictional resistance. This simulates complex frictional conditions such as uneven extrusion of rock and soil within actual boreholes, borehole wall friction, and multi-level constraints. It overcomes the shortcomings of traditional equipment, which provides constant frictional resistance and simulates only a single working condition. It can accurately test core parameters such as drilling efficiency, drill rod wear, and borehole forming accuracy under different frictional conditions, providing comprehensive data support for drilling technology optimization.

[0020] 4. This design presents a drilling test rig capable of long-distance horizontal drilling and friction loading experiments. It is equipped with a digital twin system and a comprehensive monitoring system with no blind spots. Combined with a PLC control system, it achieves fully automated and precise control of all equipment. The digital twin system can visualize the test process and supports remote control of the test, eliminating the limitations of on-site manual operation. The monitoring system eliminates blind spots in the test and monitors the drill pipe operation, equipment condition, and test environment status in real time. It can promptly warn of equipment jamming, overload, drill pipe deviation, and other faults, greatly improving the safety and stability of the test operation, while simplifying the test operation process and improving the test efficiency. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a top view of the structure of the present invention; Figure 3 This is a schematic diagram showing the structural connection of the mobile frame, the mobile track, and the intelligent drilling rig in this invention; Figure 4 for Figure 3 A partial sectional view; Figure 5 This is a schematic diagram of the structure of the mobile frame and intelligent drilling rig in this invention; Figure 6 This is a schematic diagram of the hydraulic restraint device in this invention; Figure 7 for Figure 6 The front view; Figure 8 This is a schematic diagram of the mechanical support device in this invention; Figure 9 This is another structural view of the mechanical support device in this invention.

[0022] In the diagram: 1. Base; 2. PLC control system workbench; 3. Moving track; 31. Hydraulic cylinder one; 4. Moving frame; 41. Hydraulic cylinder two; 42. Support seat; 5. Intelligent drilling rig; 51. Power head; 52. Drill rod; 53. Drilling rig mast; 6. Hydraulic restraint device; 61. Fixed frame one; 62. Lifting cylinder one; 63. Lifting frame one; 64. Lifting slide one; 65. Guide wheel seat one; 66. Lower pressure seat; 67. Lower pressure cylinder; 7. Mechanical support device; 71. Fixed frame two; 72. Lifting cylinder two; 73. Lifting frame two; 74. Lifting slide two; 75. Guide wheel seat two; 76. Lifting roller; 8. Horizontal target platform. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0024] Please see Figure 1-9 The present invention provides a drilling test bench technical solution for long-distance horizontal drilling and friction loading experiments: the core structure includes a base 1, a moving track 3, a moving frame 4, an intelligent drilling rig 5, multiple sets of hydraulic constraint devices 6, multiple sets of mechanical support devices 7, a digital twin system 2 and a monitoring system 21.

[0025] The base 1 serves as the supporting foundation for the entire equipment. It is constructed from high-strength steel and welded to ensure the stability of the equipment's operation. A moving track 3 is fixedly installed on top of the base 1. The moving track 3 adopts a high-precision linear track structure. The bottom of the moving frame 4 is slidably engaged with the moving track 3. Two hydraulic cylinders 31 are symmetrically installed on the inner side of the moving track 3. The two hydraulic cylinders 31 adopt a synchronous hydraulic control mode. The telescopic ends are fixed to the bottom of the moving frame 4. When telescopically extending and retracting, the moving frame 4 can be driven to slide smoothly and horizontally along the moving track 3, and the displacement accuracy is controllable.

[0026] The upper front of the mobile frame 4 is fixed with a support base 42 and an intelligent drilling rig 5. Two hydraulic cylinders 41 are symmetrically hinged to the front end of the intelligent drilling rig 5. The top of the support base 42 is hinged to the drilling rig mast 53. The tops of the two hydraulic cylinders 41 are hinged to the side wall of the drilling rig mast 53. During the test, the two hydraulic cylinders 41 are synchronously controlled to extend or retract through the PLC control system, which can drive the drilling rig mast 53 to rotate 90° around the top of the support base 42, realizing the switching between horizontally laid down and vertically erected states. The horizontal state is used for horizontal drilling experiments, and the vertical state can be adapted to conventional vertical drilling experiments, with wider functional adaptability.

[0027] The drilling mast 53 is equipped with a sliding power head 51. Multiple drill rods 52 can be spliced ​​at the front end of the power head 51. The drill rods 52 can be flexibly spliced ​​according to the test distance to meet the drilling requirements of hundreds of meters. This equipment is set with a two-stage horizontal feed mode. After the drilling mast 53 is laid down horizontally, the power head 51 can slide and advance independently along the mast to achieve the first-stage feed. At the same time, it cooperates with the overall horizontal displacement of the moving frame 4 to achieve the second-stage composite feed. The dual feed modes can be flexibly switched according to the experimental requirements to adapt to experimental scenarios with different drilling speeds and different drilling loads.

[0028] Within a 100-meter section of the horizontal test site, five sets of hydraulic constraint devices 6 and five sets of mechanical support devices 7 are selected and arranged evenly and alternately along the same axis and at the same height to form a continuous support and constraint system. The central axis of all devices coincides with the output axis of the power head 51 of the intelligent drilling rig 5, ensuring the coaxiality of the drill rod 52 throughout the drilling process.

[0029] When the hydraulic constraint device 6 is working, the lifting cylinder 62 extends and retracts to push the lifting frame 63 to slide up and down along the lifting slide groove 64. The lifting roller 76 effectively reduces sliding friction and ensures the stability of lifting. The height of the guide wheel seat 65 is precisely adjusted to adapt to drill rods 52 of different diameters. After the height adjustment is completed, the pressing cylinder 67 is activated. The extension end of the pressing cylinder 67 extends downward and applies vertical pressure to the drill rod 52 through the pressing seat 66. The pressure can be precisely controlled by the hydraulic system, so that the drill rod 52 can withstand controllable frictional resistance while rotating and advancing horizontally, simulating the complex frictional conditions inside the borehole and completing the frictional resistance loading experiment.

[0030] Mechanical support device 7 serves as an auxiliary support structure. It drives lifting frame 73 to slide up and down along lifting slide groove 74 via lifting cylinder 72, adjusting the height of top guide wheel seat 75 to match the height of hydraulic constraint device 6. This provides all-round stable support for drill rod 52, preventing long-distance drill rod 52 from sag or shifting due to its own weight, thus ensuring the stability and accuracy of the drilling process.

[0031] The digital twin system 2 is linked with the overall electrical control system of the equipment, enabling real-time acquisition of various test data such as equipment displacement, pressure, rotational speed, and drilling speed. It constructs a three-dimensional virtual test scene, visually presenting the physical test process in a 1:1 scale, and supports remote viewing, control, and adjustment of test parameters by staff. The monitoring system 21 adopts a full-area control design, covering the 100-meter test zone and the equipment itself, with no blind spots. It records the entire test process in real time and, in conjunction with the PLC control system, enables automated equipment start-up and shutdown, parameter fine-tuning, and fault early warning, comprehensively improving the intelligence and safety of the test.

[0032] The working principle of this invention is as follows: Before the test begins, the two sets of hydraulic cylinders 41 are activated by the PLC control system to extend synchronously, pushing the drilling mast 53 to rotate 90° around the support base 42, adjusting the drilling mast 53 to a horizontal state and locking it. Then, the lifting cylinders 62 of all hydraulic constraint devices 6 and the lifting cylinders 72 of mechanical support devices 7 are uniformly controlled to precisely adjust the height of each set of guide wheel seats, so that the central axis of all support constraint points is aligned with the output axis of the power head 51, completing the coaxiality calibration and attitude positioning of the equipment, and ensuring the accuracy of the test reference. This invention employs a two-stage composite horizontal feeding mode, effectively reducing equipment size while improving feed adaptability: The first stage is independent power head feeding: after the drilling mast 53 is fixed horizontally, the power head 51 can slide independently horizontally along the mast track, driving the drill rod 52 to advance at low speed and with precision, which is suitable for short stroke and high precision drilling experiments; The second stage is the overall moving feed: by synchronously extending and retracting two sets of hydraulic cylinders 31, the moving frame 4 and the overall drilling rig structure above it are driven to move horizontally along the moving track 3 to achieve large-stroke overall propulsion.

[0033] The two-stage feed can work independently or in tandem to meet the experimental needs of different drilling strokes and propulsion forces, while eliminating the need to lengthen the mast structure and significantly reducing the overall size of the equipment.

[0034] Within the 100-meter test section, five sets of hydraulic constraint devices 6 and five sets of mechanical support devices 7 are arranged alternately and evenly to form a multi-point, full-coverage support and constraint system. During the test, multiple drill rods 52 are spliced ​​according to the test length requirements. The drill rods 52 are passed through the guide wheel seats of all hydraulic constraint devices 6 and mechanical support devices 7 in sequence, with the front end connected to the power head 51 and the end equipped with the drill bit and extended to the horizontal target platform 8. When the equipment is started, the power head 51 drives the drill rods 52 to rotate at high speed, and at the same time, the two-stage horizontal feed structure drives the drill rods 52 to continuously advance horizontally. Each set of support and constraint devices supports and corrects the long-distance drill rods 52 throughout the process, effectively offsetting the deviation and vibration caused by the weight of the drill rod and the force of the propulsion, ensuring that the drill rods 52 stably complete the 100-meter-level long-distance horizontal drilling operation along the preset axis, and realistically reproducing the long-distance drilling conditions on site.

[0035] During the friction simulation experiment, the hydraulic constraint device 6 serves as the core loading structure. The height of the guide wheel seat 65 is precisely adjusted by the lifting cylinder 62 to achieve precise positioning of the drill rod 52. Then, the pressing cylinder 67 is activated, applying different levels of pressure according to the preset experimental parameters. This causes the pressing seat 66 to press against the outer wall of the drill rod 52, generating controllable sliding friction during the rotation and advancement of the drill rod 52. Operators can adjust the pressure value of the pressing cylinder 67 in real time via the PLC control system, achieving stepless dynamic adjustment of the friction resistance. This simulates various complex working conditions such as loose soil and rock compression, dense friction, and sudden changes in local resistance within the borehole, allowing the drill rod to complete drilling experiments under different friction conditions. The drilling performance parameters under different friction conditions are accurately obtained. The mechanical support device 7 provides stable support throughout the process, balancing the vertical stress generated by the pressing load, preventing drill rod deformation, and ensuring the stability and accuracy of the friction loading experiment.

[0036] Throughout the entire test, the monitoring system 21 captures test footage across the entire area, monitoring equipment operating status, drill pipe movement trajectory, and changes in the test environment in real time, completely eliminating blind spots. It can promptly issue warnings in case of abnormalities such as equipment jamming, drill pipe deviation, or pressure overload. The digital twin system 2 synchronously collects all test data, constructs a three-dimensional virtual simulation model, and maps the operating status of the physical equipment and the test progress in real time. Personnel can remotely view the entire test process and remotely adjust various parameters such as hydraulic pressure, feed speed, and drilling distance through terminal devices, achieving unattended remote intelligent testing and significantly improving test safety, convenience, and intelligence.

[0037] The above description is merely a preferred embodiment of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described or explained in this invention are implemented according to conventional methods in the art unless otherwise specified or limited.

Claims

1. A drilling test rig capable of long-distance horizontal drilling and friction loading experiments, characterized in that, Includes a base (1) and a horizontal target platform (8). A moving track (3) is fixedly installed above the base (1). A moving frame (4) is slidably connected to the upper end of the moving track (3). Two hydraulic cylinders (31) are symmetrically arranged inside the moving track (3). The telescopic ends of the two hydraulic cylinders (31) are fixedly connected to the bottom of one end of the moving frame (4). The synchronous telescopic extension of the two hydraulic cylinders (31) can drive the moving frame (4) to slide horizontally along the moving track (3). The upper end of the mobile frame (4) is fixed with an intelligent drilling rig (5), which includes a power head (51) and multiple detachable drill rods (52) mounted on the drilling rig mast (53). It also includes multiple hydraulic restraint devices (6) and multiple mechanical support devices (7), the drill rod (52) passes through all the hydraulic restraint devices (6) and mechanical support devices (7), the drill rod (52) is detachably equipped with a drill bit at the end, and the front end of the drill rod (52) is connected to the power head (51); It also includes a digital twin system (2) and a monitoring system (21), both of which are electrically connected to the intelligent drilling rig (5). The digital twin system (2) is equipped with a PLC control system.

2. The drilling test rig for long-distance horizontal drilling and friction loading experiments according to claim 1, characterized in that, The upper front of the mobile frame (4) is fixed with a support base (42). The front end of the intelligent drilling rig (5) is symmetrically hinged with two hydraulic cylinders (41). The top of the support base (42) is hinged with a drilling mast (53). The tops of the two hydraulic cylinders (41) are hinged together on the drilling mast (53). The synchronous extension and retraction of the two hydraulic cylinders (41) can drive the drilling mast (53) to complete a 90° rotation adjustment around the top of the support base (42).

3. The drilling test rig for long-distance horizontal drilling and friction loading experiments according to claim 1, characterized in that, Multiple hydraulic constraint devices (6) and multiple mechanical support devices (7) are evenly and alternately arranged on the same axis and at the same height on the horizontal ground. The number of hydraulic constraint devices (6) and mechanical support devices (7) is set to at least 5, and the total distance of arrangement can reach 100 meters, in order to ensure the coaxiality and stability of the drill rod (52) during long-distance drilling.

4. The drilling test rig for long-distance horizontal drilling and friction loading experiments according to claim 1, characterized in that, The hydraulic restraint device (6) includes a fixed frame (61), a lifting cylinder (62), a lifting frame (63), a lifting slide (64), a guide wheel seat (65), a pressing seat (66), and a pressing cylinder (67). The bottom end of the lifting cylinder (62) is hinged to the fixed frame (61), and the top end is hinged to the middle of the bottom end of the lifting frame (63). The inner wall of the fixed frame (61) is symmetrically provided with lifting slides (64). The lifting frame (63) is equipped with lifting rollers (76) at both ends. The lifting frame (63) slides with the lifting slide (64) through the lifting rollers (76). The guide wheel seat (65) is installed in the middle of the top of the lifting frame (63).

5. The drilling test rig for long-distance horizontal drilling and friction loading experiments according to claim 4, characterized in that, The pressure seat (66) is detachably installed on the upper end of the guide wheel seat (65). The pressure cylinder (67) is fixedly installed in the middle of the upper end of the pressure seat (66), and the telescopic end corresponds to the guide wheel seat (65). After the pressure cylinder (67) extends, it can apply vertical pressure to the drill rod (52) to form frictional resistance.

6. The drilling test rig for long-distance horizontal drilling and friction loading experiments according to claim 5, characterized in that, The mechanical support device (7) includes a fixed frame two (71), a lifting cylinder two (72), a lifting frame two (73), a lifting slide groove two (74), and a guide wheel seat two (75). The bottom end of the lifting cylinder two (72) is hinged to the middle of the inner side of the fixed frame two (71), and the telescopic end is hinged to the middle of the bottom end of the lifting frame two (73). The upper inner wall of the fixed frame two (71) is symmetrically provided with lifting slide groove two (74). The two ends of the lifting frame two (73) are also provided with lifting rollers (76), and the two ends of the lifting frame two (73) slide in cooperation with the lifting slide groove two (74) through the lifting rollers (76). The guide wheel seat two (75) is fixed to the middle of the top of the lifting frame two (73).

7. The drilling test rig for long-distance horizontal drilling and friction loading experiments according to claim 6, characterized in that, The lifting cylinder 1 (62), lifting cylinder 2 (72), pressing cylinder (67), hydraulic cylinder 1 (31), and hydraulic cylinder 2 (41) are all electrically connected to the PLC control system to realize automated synchronous regulation and precise displacement control.

8. The drilling test rig for long-distance horizontal drilling and friction loading experiments according to claim 1, characterized in that, The intelligent drilling rig (5) is equipped with a two-level horizontal feed mode. When the drilling rig mast (53) is laid down horizontally, the power head (51) can independently complete the horizontal loading and propulsion, and at the same time cooperate with the moving frame (4) to achieve composite feed operation by overall horizontal displacement.

9. A drilling test rig for long-distance horizontal drilling and friction loading experiments according to claim 1, characterized in that, The monitoring system (21) is a full-area, blind-spot-free monitoring layout, covering the entire test bench and the 100-meter drilling test area, eliminating blind spots for operators.

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