Microwave and laser synergistic rock breaking experimental equipment

Abstract

The invention belongs to the field of rock mass crack research experiments, and provides microwave and laser synergistic rock breaking experimental equipment which comprises a laser generator, a microwave generator, a gas cleaning assembly, a connecting waveguide and an image acquisition assembly. The laser generator is located above the sample, the output end of the microwave generator is connected with the connecting waveguide, and the output end of the connecting waveguide faces the side face of the sample; the gas cleaning assembly is used for blowing gas to the top surface of the sample; the image acquisition assembly is positioned above the sample and is used for acquiring an image of the top surface of the sample; the microwave generator and the laser generator respectively generate microwaves and laser to act on the rock sample, so that the rock sample is heated to generate cracks, the rock sample is shot in real time through the imaging acquisition assembly, and crack evolution of the rock in the microwave and laser synergistic effect process can be monitored and recorded in real time; rock crack development and evolution laws can be observed in real time, and data such as mineral volume expansion and fracture can be evaluated.

Description

Technical Field

[0001] The invention belongs to the field of rock crack research experiments, and specifically relates to a microwave laser coordinated rock breaking experimental equipment. Background Art

[0002] As the mining depth increases, the strength of the rock mass increases nonlinearly. Traditional mechanical excavation has low efficiency and rapid wear, which greatly restricts the safe and efficient development of deep coal resources. Microwaves and lasers, as rock-breaking methods with a wide fracturing range and high fracturing efficiency, are expected to solve the problem of large-scale crushing of deep hard rocks and low efficiency. Therefore, the research on hard rock crushing by combining microwave and laser rock-breaking technologies is of great significance to promote the application of microwave-laser combined rock-breaking engineering.

[0003] At present, most of the research on microwave and laser rock breaking is carried out independently. The rock cracking characteristics and weakening effects under the coupling of the two technologies have not been involved. The enhancement effect of microwave on laser cracking and the influence of microwave-laser application sequence on cracking characteristics have not been demonstrated. The microwave laser collaborative rock breaking equipment designed by the patent of this invention creatively combines two new rock breaking technologies, microwave and laser, and integrates monitoring such as acoustic emission and thermogravimetry. It can carry out microwave-laser joint rock breaking tests, demonstrate the gain effect of microwave on laser cracking, and provide technical and equipment support for the engineering application of microwave and laser technology. Summary of the invention

[0004] In order to solve the above technical problems, the present invention provides a microwave laser coordinated rock breaking experimental equipment to solve the problems in the prior art. The technical solution adopted by the present invention is: A microwave laser collaborative rock breaking experimental equipment, comprising: a laser generator, a microwave generator, a gas sweeping component, a connecting waveguide and an imaging acquisition component; The laser generator is located above the sample and is used to irradiate the top surface of the sample with laser. The output end of the microwave generator is connected to the connecting waveguide, and the output end of the connecting waveguide faces the side of the sample. The gas sweeping component is used to blow gas to the top surface of the sample. The imaging acquisition component is located above the sample and is used to acquire an image of the top surface of the sample.

[0005] Furthermore, the connecting waveguide includes a straight waveguide and a curved waveguide connected end to end, the inlet end of the straight waveguide is connected to the microwave generator, the outlet end of the curved waveguide is fixedly connected to a horn antenna, and the outlet end of the horn antenna faces the sample; two connecting waveguides are symmetrically arranged and distributed on both sides of the sample.

[0006] Furthermore, the straight waveguide is a rectangular waveguide, and its dimensions satisfy the following formula conditions: , Integration gives: , in, f is the microwave frequency, a is the width of the straight waveguide, b is the height of the straight waveguide, and λ is the microwave wavelength.

[0007] Further, the gas cleaning assembly includes an annular fixing seat, a rotating ring, a tangential connecting pipe and a gas source; The annular fixing seat is fixedly arranged above the sample, an annular groove is arranged on the inner side of the annular fixing seat, the rotating ring is rotatably arranged in the annular groove, the rotating ring is coaxially arranged with the annular fixing seat, the side surface of the annular fixing seat is fixedly connected to one end of the tangential connecting pipe, the other end of the tangential connecting pipe is connected to the gas source, and the tangential connecting pipe is located in the tangential direction of the outer side of the annular fixing seat; An annular air cavity is formed between the outer side surface of the rotating ring and the inner wall surface of the annular groove of the annular fixing seat, the tangential connecting pipe is connected to the annular air cavity, and a plurality of baffles are fixedly connected to the outer side surface of the rotating ring; the baffles are located in the annular air cavity, and the tangential connecting pipe is used to blow the gas of the gas source to the baffles, so as to rotate the rotating ring; The rotating ring is provided with an air blowing hole, which is a through hole and communicates with the annular air cavity. The air blowing hole is arranged obliquely, and the opening at one end with a lower height is located on the inner side surface of the rotating ring.

[0008] Furthermore, a protective tube is sleeved on the laser head of the laser generator, and the protective tube is fixedly connected to the laser generator; The laser generator is coaxially arranged with the rotating ring, or the laser generator is tiltedly arranged; the protective tube is connected with the rotating ring.

[0009] Furthermore, the rotating ring is fixedly connected to the vertical pole, the vertical pole is arranged vertically, the top of the vertical pole is slidably connected to the horizontally arranged adjusting rod, the end of the adjusting rod is rotatably connected to the sliding sleeve, the sliding sleeve is movably mounted on the protective tube, and the inclination angle of the laser generator is adjusted by sliding the adjusting rod.

[0010] Furthermore, the top of the vertical pole is fixedly connected to a sleeve, and the end of the adjusting rod away from the laser generator can slidably pass through the sleeve, the top of the sleeve is threadedly connected to the adjusting bolt, the bottom of the adjusting bolt is connected to a rubber damping block, the rubber damping block abuts the adjusting rod, and the adjusting rod is fixedly connected to a limit block, a spring is arranged between the limit block and the sleeve, the spring is sleeved on the adjusting rod, and the rubber damping block is used to form a sliding damping between the adjusting rod, so that under the action of the spring, the laser generator is caused to spirally rotate or fixedly rotate in a circle.

[0011] The present invention has the following beneficial effects: the present invention uses a microwave generator and a laser generator to generate microwaves and lasers respectively to act on rock samples, so that the rock samples are heated to generate cracks, and uses an imaging acquisition component to photograph the rock samples in real time. It is capable of real-time monitoring and recording the crack evolution of the rock during the synergistic effect of microwaves and lasers, and can observe the development and evolution laws of rock cracks in real time, and evaluate data such as mineral volume expansion and fracture. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of a rectangular straight waveguide; Figure 3 is a top view schematic diagram of the symmetrical arrangement of the connecting waveguides; Figure 4 It is a schematic diagram of the laser generator when it is vertical; Figure 5 yes Figure 4 The enlarged schematic diagram at A in the middle; Figure 6 is a top cross-sectional schematic diagram of the connection relationship of the rotating ring; Figure 7 It is a schematic diagram when the laser generator is tilted. DETAILED DESCRIPTION

[0013] The following will be combined with the embodiments of the present invention Figure 1-Figure 7 , the technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Unless otherwise specified, the technical means used in the embodiments are conventional means well known to those skilled in the art.

[0014] like Figure 1 , a microwave laser collaborative rock breaking experimental equipment, comprising: a laser generator 4, a microwave generator, a gas sweeping component, a connecting waveguide 2 and an imaging acquisition component; The laser generator 4 is located above the sample 1 and is used to irradiate the top surface of the sample 1 with a laser. The output end of the microwave generator is connected to the connecting waveguide 2, and the output end of the connecting waveguide 2 faces the side of the sample 1. The gas sweeping component is used to blow gas to the top surface of the sample 1. The imaging acquisition component is located above the sample 1 and is used to acquire an image of the top surface of the sample 1.

[0015] The laser generator 4 and the microwave generator are prior art. The microwave generator is connected to a microwave power supply through a cable. The microwave power supply is connected to the power supply. The microwave power supply is controlled by a high-frequency power switch to supply power to the microwave generator. The microwave generator contains an excitation cavity, a magnetron and a filament power supply. The filament power supply is first preheated by the microwave power supply. During preheating, the filament power supply heats the magnetron cathode through an electric current. When heated to a sufficiently high temperature, the magnetron cathode generates an electron beam. The electron beam is emitted from the accelerating electrode and guided by the magnetic field generated by the magnetic field ring to form a curved electron beam. The energy change generated by the interaction between the electron beam and the magnetic field generates microwave radiation. At this time, the microwave is a TEM mode. The microwave is propagated into the excitation cavity in the form of an electromagnetic wave. When the microwave is transmitted to the excitation cavity through a coupler, the coupler converts the TEM mode microwave into a TE mode through a specific guiding effect. 10 Module, (TE 10 The mold has the characteristics of simple field structure, stability, wide frequency bandwidth and low loss), and is transmitted to a rectangular straight waveguide. The laser generator 4 is connected to the laser power supply through an optical cable.

[0016] The imaging acquisition component is a prior art, such as an industrial camera, an infrared imager, and is used to acquire the wall surface of the sample 1 after being irradiated by the laser. The acquisition end of the imaging acquisition component can be located below the annular fixing seat 8 to acquire a clear image.

[0017] The sample 1 of the present invention is a square rock sample.

[0018] like Figure 2 , Figure 3 The connecting waveguide 2 includes a straight waveguide and a curved waveguide connected end to end, the inlet end of the straight waveguide is connected to the microwave generator, the outlet end of the curved waveguide is fixedly connected to the horn antenna, and the outlet end of the horn antenna faces the sample 1; the connecting waveguide 2 is symmetrically arranged with two and distributed on both sides of the sample 1.

[0019] In order to achieve the effect of microwave action on both sides at the same time, the idea of ​​dividing into two is adopted to arrange the waveguide symmetrically on the left and right sides, and transmit microwaves at the same time. For example, when the microwave generator generates 6kW microwaves, the left and right sides transmit 3kW microwaves to the surface of rock sample 1 respectively. The reason for the symmetrical arrangement on both sides is that: when microwaves penetrate rocks, electromagnetic energy is continuously converted into heat energy, and the electric field strength and power will continue to decay. The penetration depth of microwaves into rocks can be expressed by the following formula: , Where D is the field strength penetration depth, which means the distance at which the field strength decays to 36.8% (i.e. 1 / e) of the medium surface, and λ is the microwave wavelength.

[0020] , In the formula, is the power penetration depth, ε' is the real part of the complex dielectric constant, ε '' The imaginary part of the complex dielectric constant represents the distance at which the power decays to 36.8% (i.e. 1 / e) of the dielectric surface.

[0021] , In the formula, It is the half-power penetration depth, which means the distance at which the power weakens to half of the medium surface.

[0022] According to the above three formulas, when the loss coefficient of the heated rock remains unchanged, the penetration depth is of the same order of magnitude as the microwave wavelength. For example, for a 2.45GHz microwave source, the wavelength λ=12.2cm, and the penetration depth is usually several centimeters to tens of centimeters. Therefore, in order to ensure that microwaves can penetrate the entire rock, the symmetrically arranged horn antenna can ensure that this can be achieved even when the rock size is large. The horn antenna can be attached to the wall of sample 1.

[0023] The straight waveguide is a rectangular waveguide. Considering that the microwave generator transmits TE 10 mode, so the rectangular straight waveguide needs to meet the following requirements: (1) only transmit the main mode TE 10 ; (2) Sufficient power capacity (increase power capacity while avoiding breakdown); (3) Low loss. The specific size satisfies the following calculation formula: , Integration gives: , in, f is the microwave frequency, a is the width of the straight waveguide, b is the height of the straight waveguide, and λ is the microwave wavelength.

[0024] In addition, the microwave generator can be connected to the straight waveguide through a circulator. A water load is provided on the circulator. The water load has a water inlet and outlet. The water load is connected to a water pump through a water pipe at the inlet of the water load. The water pump is placed in a water tank and water circulation is achieved through negative pressure. The outlet water pipe of the water load is connected to the water inlet of the microwave generator. After cooling the magnetron, the water returns to the water tank through a pipe from the water outlet. The water in the water load is mainly used to absorb reflected microwaves to prevent reflected microwaves from entering the microwave generator from the circulator and damaging the magnetron. In addition, a microwave power meter is installed on the straight waveguide to monitor the incident power and reflected power in real time.

[0025] like Figure 4-Figure 7 , the gas cleaning assembly includes an annular fixed seat 8, a rotating ring 10, a tangential connecting pipe 9 and a gas source; The annular fixing seat 8 is fixedly arranged above the sample 1, an annular groove is arranged on the inner side of the annular fixing seat 8, the rotating ring 10 is rotatably arranged in the annular groove, the rotating ring 10 is coaxially arranged with the annular fixing seat 8, the side surface of the annular fixing seat 8 is fixedly connected to one end of the tangential connecting pipe 9, the other end of the tangential connecting pipe 9 is connected to the gas source, and the tangential connecting pipe 9 is located in the outer tangential direction of the annular fixing seat 8; An annular air cavity 22 is formed between the outer side surface of the rotating ring 10 and the inner wall surface of the annular groove of the annular fixing seat 8, the tangential connecting pipe 9 is connected to the annular air cavity 22, and a plurality of baffles 21 are fixedly connected to the outer side surface of the rotating ring 10; the baffles 21 are located in the annular air cavity 22, and the tangential connecting pipe 9 is used to blow the gas of the gas source to the baffles 21, so as to rotate the rotating ring 10; The rotating ring 10 is provided with an air blowing hole 11 , which is a through hole and communicates with the annular air cavity 22 . The air blowing hole 11 is arranged obliquely, and the opening at one end with a lower height is located on the inner side surface of the rotating ring 10 .

[0026] The present invention utilizes a gas cleaning assembly to clean the dust generated during laser rock breaking. The gas source is a prior art, such as a high-pressure gas tank, an air pump and other equipment. The outer side surface of the annular fixing seat 8 can be fixedly connected by a bracket, and the bracket stands on the ground. The outer diameter of the rotating ring 10 is smaller than the inner diameter of the annular groove, thereby forming a uniform annular air cavity 22. A plurality of baffles 21 are evenly distributed around the outer side surface of the rotating ring 10, and a gap is set between the baffles 21 and the inner wall surface of the annular groove. The annular fixing seat 8 and the rotating ring 10 are on a horizontal plane, and the blowing hole 11 is inclined relative to the horizontal plane, and the inner end of the blowing hole 11 is inclined downward to ensure that the gas is blown onto the top surface of the sample 1.

[0027] When the gas source inputs gas into the tangential connecting pipe 9, the high-speed gas enters the annular air cavity 22 along the tangent of the annular fixing seat 8, thereby forming a rotating airflow. Under the action of the rotating airflow and the blowing of the gas, the rotating ring 10 is driven to rotate through the plurality of baffles 21, and the high-speed gas is ejected through the blowing holes 11. Then, the blowing holes 11 rotate around the axis of the rotating ring 10, forming a rotating purge, and the top surface of the sample 1 is swept from all directions.

[0028] The upper and lower end surfaces of the rotating ring 10 can be connected to the annular fixing seat 8 through a sealing bearing and sealing grease.

[0029] Furthermore, a protective tube 7 is sleeved on the laser head 6 of the laser generator 4, and the protective tube 7 is fixedly connected to the laser generator 4; The laser generator 4 is coaxially arranged with the rotating ring 10 , or the laser generator 4 is tiltedly arranged; the protective tube 7 is connected to the rotating ring 10 .

[0030] The top of the laser generator 4 is connected to the bracket via a ball joint 5, and the bracket stands on the ground, thereby fixing the laser generator 4 and enabling it to rotate. The protection tube 7 is a hollow structure, and its purpose is to protect the laser head 6 and connect the rotating ring 10.

[0031] When the laser generator 4 is coaxially arranged with the rotating ring 10, as Figure 4 , the laser generator 4 is in a vertical state, at this time, the laser emitted by the laser generator 4 irradiates vertically downward to the top surface of the sample 1, forming a fixed-point irradiation function.

[0032] When the laser generator 4 is tilted, as Figure 7 The ball joint 5 is always on the axis of the rotating ring 10, and the lower end of the laser generator 4 is tilted outward, so that the emitted laser is irradiated at different positions. And under the rotation of the rotating ring 10, the laser generator 4 rotates together, so that the irradiated laser forms a fixed circle or a spiral around the axis of the rotating ring 10.

[0033] The purpose of this design is to explore the fracture changes of sample 1 under the influence of different laser irradiation ranges. Compared with fixed-point irradiation, the contact area between the laser and sample 1 is larger during circular or spiral irradiation, while fixed-point irradiation is relatively more energy-concentrated.

[0034] Furthermore, the rotating ring 10 is fixedly connected to the vertical pole 12, the vertical pole 12 is vertically arranged, the top of the vertical pole 12 is slidably connected to the horizontally arranged adjusting rod 13, the end of the adjusting rod 13 is rotatably connected to the sliding sleeve 20, and the sliding sleeve 20 is movably mounted on the protective tube 7, and the inclination angle of the laser generator 4 is adjusted by sliding the adjusting rod 13.

[0035] Furthermore, the top of the vertical pole 12 is fixedly connected to a sleeve 17, and the end of the adjusting rod 13 away from the laser generator 4 can slide through the sleeve 17, the top of the sleeve 17 is threadedly connected to an adjusting bolt 18, and the bottom of the adjusting bolt 18 is connected to a rubber damping block 19, and the rubber damping block 19 abuts against the adjusting rod 13. A limit block 15 is fixedly connected to the adjusting rod 13, and a spring 16 is arranged between the limit block 15 and the sleeve 17, and the spring 16 is sleeved on the adjusting rod 13. The rubber damping block 19 is used to form a sliding damping between the adjusting rod 13, so that under the action of the spring 16, the laser generator 4 is spirally rotated or fixedly rotated in a circle.

[0036] The sleeve 17 is a hollow structure, and the bottom of the adjusting bolt 18 is located in the sleeve 17. A slide groove 14 can be set at the top of the adjusting rod 13, and the rubber damping block 19 is located in the slide groove. The bottom of the adjusting bolt 18 can abut or rotatably connect to the rubber damping block 19. The rubber damping block 19 can be made of rubber and has elasticity. When the adjusting bolt 18 is tightened, the sliding damping between the rubber damping block 19 and the adjusting rod 13 increases, and when the adjusting bolt 18 is tightened to a certain position, the elastic force of the spring 16 is eliminated under the extrusion of the rubber damping block 19, so that the adjusting rod 13 remains stationary. The spring 16 has a reset function, pushing the adjusting rod 13 to return the laser generator 4 to a state where the axis is vertical.

[0037] When the adjusting bolt 18 is tightened and there is a certain sliding damping between the rubber damping block 19 and the adjusting rod 13, the adjusting rod 13 moves slowly under the action of the spring 16, and the laser generator 4 slowly returns to the vertical state. Therefore, in this process, under the rotation of the rotating ring 10, the laser generator 4 performs a spiral motion with a gradually decreasing rotation radius, forming a spiral laser scanning line.

[0038] When the adjusting bolt 18 is tightened and the rubber damping block 19 is completely squeezed to keep the adjusting rod 13 stationary, the position of the adjusting rod 13 can be adjusted to adjust the inclination angle of the laser generator 4. Then, under the rotation of the rotating ring 10, the laser generator 4 rotates in a fixed circle to form a laser scanning line of a fixed circle.

[0039] When the adjusting bolt 18 is tightened and the rubber damping block 19 is completely squeezed to keep the adjusting rod 13 still, the position of the adjusting rod 13 is adjusted to reset the spring 16, so that the laser generator 4 is set vertically, and then the laser generator 4 forms a concentrated fixed-point laser irradiation under the rotation of the rotating ring 10. A larger gap can be set between the protection tube 7 and the sliding sleeve 20 so that the rotation of the sliding sleeve 20 does not affect the protection tube 7. The laser generator 4 remains vertical under the action of its own weight and does not rotate with the protection tube 7.

[0040] The present invention provides three different laser irradiation trajectories, which can be used to explore the impact of different irradiation ranges and trajectories on rock fracture. In specific experiments, multiple groups of controls can be set to form experimental data.

[0041] In addition, a plurality of blowing holes 11 can be provided, and the blowing holes 11 and the vertical rods 12 are distributed on both sides of the rotating ring 10. When the laser generator 4 is tilted, it is always tilted in a direction away from the blowing hole 11, that is, the airflow blown out of the blowing hole 11 will also be purged in a rotational manner, and the blowing direction of the blowing hole 11 is always in the direction of the laser irradiation point, thereby forming a more effective purging. The airflow moves through the blowing hole 11 to the top surface of the sample 1, and then moves on the top surface of the sample 1 to take away the dust.

[0042] Acoustic emission probes can also be set on the front and back surfaces of sample 1. In order to ensure the monitoring effect, three acoustic emission probes are arranged in a positive and inverted triangle arrangement, respectively arranged on the front and back surfaces of the rock. The decibel threshold of the acoustic emission probe is adjusted to ensure that the interference of noise signals affecting the data accuracy is filtered out. When cracks appear inside the rock, an acoustic signal is generated. Six probes capture and locate the acoustic signal at the same time and record it in the acoustic emission software to record the moment of internal rupture of sample 1.

[0043] After the various instruments are connected, the microwave power and time are set to start the test, and the computer records the infrared image and the image taken by the industrial camera during the microwave test. In this process, special attention should be paid to the synchronization of the infrared imaging recording time and the industrial camera shooting time, so as to analyze the time and temperature of the crack generation.

[0044] The present invention uses a microwave generator and a laser generator 4 to generate microwaves and lasers respectively to act on a rock sample 1, so that the rock sample 1 is heated to generate cracks, and uses an imaging acquisition component to photograph the rock sample 1 in real time. It is capable of real-time monitoring and recording the crack evolution of the rock during the synergistic effect of microwaves and lasers, and can observe the development and evolution laws of rock cracks in real time, and evaluate the volume expansion of minerals.

[0045] The embodiments described above are only descriptions of the preferred modes of the present invention and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various deformations, modifications, and substitutions made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A microwave laser collaborative rock breaking experimental equipment, characterized in that: include: A laser generator (4), a microwave generator, a gas sweeping component, a connecting waveguide (2) and an imaging acquisition component; The laser generator (4) is located above the sample (1) and is used to irradiate the top surface of the sample (1) with laser light; the output end of the microwave generator is connected to the connecting waveguide (2), and the output end of the connecting waveguide (2) faces the side of the sample (1); the gas sweeping component is used to blow gas to the top surface of the sample (1); and the imaging acquisition component is located above the sample (1) and is used to acquire an image of the top surface of the sample (1).

2. The microwave laser collaborative rock breaking experimental equipment according to claim 1 is characterized in that: The connecting waveguide (2) comprises a straight waveguide and a curved waveguide connected end to end, the inlet end of the straight waveguide is connected to the microwave generator, the outlet end of the curved waveguide is fixedly connected to a horn antenna, and the outlet end of the horn antenna faces the sample (1); two connecting waveguides (2) are symmetrically arranged and distributed on both sides of the sample (1).

3. The microwave laser collaborative rock breaking experimental equipment according to claim 2 is characterized in that: The straight waveguide is a rectangular waveguide, and its dimensions satisfy the following formula conditions: ， Integration gives: ， in, f is the microwave frequency, a is the width of the straight waveguide, b is the height of the straight waveguide, and λ is the microwave wavelength.

4. The microwave laser collaborative rock breaking experimental equipment according to claim 2 is characterized in that: The gas cleaning assembly comprises an annular fixed seat (8), a rotating ring (10), a tangential connecting pipe (9) and a gas source; The annular fixing seat (8) is fixedly arranged above the sample (1), an annular groove is arranged on the inner side of the annular fixing seat (8), the rotating ring (10) is rotatably arranged in the annular groove, the rotating ring (10) is coaxially arranged with the annular fixing seat (8), the side surface of the annular fixing seat (8) is fixedly connected to one end of the tangential connecting pipe (9), the other end of the tangential connecting pipe (9) is connected to the gas source, and the tangential connecting pipe (9) is located in the tangential direction of the outer side of the annular fixing seat (8); An annular air cavity (22) is formed between the outer side surface of the rotating ring (10) and the inner wall surface of the annular groove of the annular fixing seat (8); the tangential connecting pipe (9) is connected to the annular air cavity (22); and a plurality of baffles (21) are fixedly connected to the outer side surface of the rotating ring (10); the baffles (21) are located in the annular air cavity (22); and the tangential connecting pipe (9) is used to blow gas from an air source toward the baffles (21), thereby causing the rotating ring (10) to rotate; The rotating ring (10) is provided with an air blowing hole (11), the air blowing hole (11) being a through hole and communicating with the annular air cavity (22), the air blowing hole (11) being arranged at an angle, and the opening at one end with a lower height is located on the inner side surface of the rotating ring (10).

5. The microwave laser collaborative rock breaking experimental equipment according to claim 4 is characterized in that: A protective tube (7) is sleeved on the laser head (6) of the laser generator (4), and the protective tube (7) is fixedly connected to the laser generator (4); The laser generator (4) is coaxially arranged with the rotating ring (10), or the laser generator (4) is inclinedly arranged; and the protective tube (7) is connected to the rotating ring (10).

6. The microwave laser collaborative rock breaking experimental equipment according to claim 5 is characterized in that: The rotating ring (10) is fixedly connected to a vertical pole (12); the vertical pole (12) is arranged vertically; the top of the vertical pole (12) is slidably connected to a horizontally arranged adjusting rod (13); the end of the adjusting rod (13) is rotatably connected to a sliding sleeve (20); the sliding sleeve (20) is movably sleeved on the protective tube (7); and the inclination angle of the laser generator (4) is adjusted by sliding the adjusting rod (13).

7. The microwave laser collaborative rock breaking experimental equipment according to claim 6 is characterized in that: The top of the vertical rod (12) is fixedly connected to a sleeve (17); one end of the adjustment rod (13) away from the laser generator (4) can slide through the sleeve (17); the top of the sleeve (17) is threadedly connected to an adjustment bolt (18); the bottom of the adjustment bolt (18) is connected to a rubber damping block (19); the rubber damping block (19) abuts against the adjustment rod (13); a limit block (15) is fixedly connected to the adjustment rod (13); a spring (16) is arranged between the limit block (15) and the sleeve (17); the spring (16) is sleeved on the adjustment rod (13); the rubber damping block (19) is used to form sliding damping between the adjustment rod (13), so that under the action of the spring (16), the laser generator (4) is caused to rotate helically or in a fixed circle.

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