A laser-assisted rock-breaking device for different depths under a lunar-based environment simulation

Abstract

The present invention provides a laser-assisted rock breaking device for different depths under a lunar-based environment, which includes a laser emission component, a mechanical rock breaking component, and a lunar-based different-depth simulation component. The lunar-based different-depth simulation component includes a vacuum extraction device, an experimental chamber, a sample, and a pressure environment simulation device. The pressure environment simulation device includes an axial pressure simulation device and a confining pressure simulation device. The axial pressure simulation device is arranged above the sample and is used to set different axial pressures on the sample. The confining pressure simulation device is arranged on the side of the sample and is used to set different confining pressures on the sample. Compared with the prior art, through the mutual cooperation among the laser emission component, the mechanical rock breaking component, and the lunar-based different-depth simulation component, the present invention can simulate the working state of laser-assisted rock breaking in the drilling process under different-depth lunar-based environments on the earth, which is convenient for researching and improving lunar drilling equipment and improving the performance of drilling equipment such as efficiency, precision, and service life.

Description

Technical Field

[0001] The present invention belongs to the technical field of deep space exploration, and particularly relates to a device for assisting rock breaking at different depths under a simulated lunar base environment by using laser action. Background Art

[0002] As the only natural satellite of the Earth and the closest celestial body, with the increasing tension in the development and utilization of Earth's resources and ground space, the exploration and development of lunar underground space and the exploration and utilization of lunar resources have become the mainstream trend. Obtaining lunar rock samples through drilling and coring for research is the basis for understanding the physical and mechanical properties of lunar soil and rocks, and further forming a series of deep space resource development such as lunar mineral resource exploration and mining. At present, technologies and equipment for drilling lunar samples in extreme environments such as large day-night temperature differences, vacuum, and low gravity on the lunar surface still need to be studied and explored.

[0003] In the prior art, most are mechanical rock breaking devices at the same depth. However, in the lunar environment, there are different depth environments, and the pressures generated by different depth environments on lunar samples are different. This technical solution only drills lunar samples in the same depth environment, and the drilling conditions under different pressures cannot be obtained, resulting in limited and single experimental data, lacking accuracy and reliability. Secondly, the lunar environment is different from the Earth environment, affected by extreme environments such as microgravity, ultra-high vacuum, and large temperature differences. In the lunar environment, the size of mechanical drilling equipment, the power of the drilling equipment, and the replacement of drill pipes are all limited, resulting in problems such as low efficiency, short lifespan, and low precision of the drilling equipment.

[0004] Therefore, researching a device for assisting rock breaking at different depths under a simulated lunar base environment by using laser action, conducting performance tests on lunar drilling, impact and other sampling equipment in a simulated lunar base environment at different depths on Earth before launch, facilitating scientists to study problems encountered in lunar drilling at different depths, reducing the probability of accidents during sampling by drilling equipment, while reducing the difficulty of rock breaking, reducing mechanical wear, saving rock breaking energy, and improving rock breaking efficiency and precision have become urgent problems to be solved by those skilled in the art. Summary of the Invention

[0005] In order to overcome the defects of the above prior art, the present invention proposes a device for laser-assisted rock breaking at different depths under a simulated lunar base environment.

[0006] Specifically, it is realized through the following technical solutions:

[0007] In a specific embodiment, a device for laser-assisted rock breaking at different depths under a simulated lunar base environment includes a laser emission component, a mechanical rock breaking component, and a simulated component for different lunar base depths.

[0008] One end of the mechanical rock-breaking assembly is connected to the laser emission assembly, and the other end is disposed above the lunar base different-depth simulation assembly. The laser emission assembly is used to assist the mechanical rock-breaking assembly in rock-breaking.

[0009] The lunar base different-depth simulation assembly includes a vacuum extraction device, an experimental chamber, a sample, and a pressure environment simulation device.

[0010] The pressure environment simulation device and the sample are disposed inside the experimental chamber, and the vacuum extraction device is disposed outside the experimental chamber.

[0011] The pressure environment simulation device includes an axial pressure simulation device and a confining pressure simulation device.

[0012] The axial pressure simulation device is disposed above the sample and is used to set different axial pressures on the sample.

[0013] The confining pressure simulation device is disposed on the side of the sample and is used to set different confining pressures on the sample.

[0014] In a specific embodiment, the axial pressure simulation device includes an axial pressure indenter which is in close contact with the upper part of the sample, and the axial pressure indenter is used to control the axial pressure value of the sample; the confining pressure simulation device includes hydraulic oil which is in close contact with the side of the sample, and the hydraulic oil is used to control the confining pressure value of the sample.

[0015] In a specific embodiment, the experimental chamber includes a seal and a chamber body. The sample is placed at the bottom of the chamber body; the seal is placed on the upper part of the chamber body, and the seal is hermetically connected to the chamber body to make the experimental chamber in a sealed state.

[0016] In a specific embodiment, the vacuum extraction device includes a vacuum pump and a gas extraction pipe. One end of the gas extraction pipe is connected to the interface of the vacuum pump, and the other end is connected to the side wall of the experimental chamber. The vacuum pump sets the experimental chamber to a vacuum state through the gas extraction pipe.

[0017] In a specific embodiment, the laser emission assembly includes a laser generating mainframe, an optical fiber, and a laser head. The input end of the optical fiber is connected to the laser generator, and the output end of the optical fiber is connected to the laser head. The laser generating mainframe transmits electrical energy to the laser head through the optical fiber to emit laser.

[0018] In a specific embodiment, the laser generating mainframe includes a housing and a laser control component. The laser control component is disposed inside the housing, and the housing is used to protect the laser control component from being damaged by external forces.

[0019] The laser control component controls two working modes, namely the normal working mode and the pulse working mode.

[0020] When the laser control component is set to the normal working mode, the optical fiber input end receives the signal transmitted by the laser generating host, transmits the laser generated by the laser generating host through the optical fiber to the optical fiber output end, and the optical fiber output end transmits the signal to the laser head, and the laser is emitted from the laser head.

[0021] When the laser control component is set to the pulse working mode, the laser generating host sets the width value and frequency value of the laser, the laser control component receives the setting signal of the laser generating host, adjusts the laser, the optical fiber input end receives the transmitted signal, transmits the adjusted laser through the optical fiber to the optical fiber output end, and the optical fiber output end transmits the signal to the laser head, and the laser is emitted from the laser head.

[0022] In a specific embodiment, the laser head is provided with a laser emission hole and a convex lens. The laser emission hole is arranged at the bottom of the laser head, and the convex lens is arranged above the laser emission hole. The laser passes through the convex lens and is emitted from the laser emission hole, so that the laser is focused on the sample.

[0023] In a specific embodiment, the mechanical rock breaking assembly includes a drilling rig host, a mechanical drill bit, and a drill pipe. The access end of the drilling rig host is connected to the mechanical drill bit through the drill pipe. The drilling rig host includes a housing, a display, and a drilling rig control component. The drilling rig control component is arranged inside the housing, and the display is arranged on the outer surface of the housing. The display is used to display the working state of the drilling rig, and the drilling rig control component is used to control the drilling speed and the drilling depth.

[0024] In a specific embodiment, the mechanical rock breaking assembly includes a slide rail. The slide rail is placed inside the drilling rig host, and the slide rail is embedded and connected to the drill pipe. The slide rail and the drilling rig control component control the vertical sliding of the drill pipe.

[0025] In a specific embodiment, the laser emission assembly includes an optical fiber fixing device. The optical fiber fixing device includes an optical fiber fixing rod, a thin-walled tube, a slip ring, and a slip ring fixing rod.

[0026] The optical fiber fixing rod, the slip ring fixing rod, and the optical fiber are placed inside the thin-walled tube. The slip ring is placed outside the thin-walled tube. The slip ring connects the thin-walled tube and the drill pipe. The slip ring fixing rod fixes the slip ring to keep the slip ring stationary. The optical fiber fixing rod fixes the optical fiber so that the optical fiber fixing rod and the slip ring fixing rod do not rotate when the drill pipe rotates, so that the slip ring does not rotate.

[0027] The present invention has at least the following beneficial effects:

[0028] A laser-assisted rock breaking device for simulating different depths in a lunar base environment according to the present invention uses lunar base different depth simulation components to simulate lunar base environments at different depths, and uses a laser emission component to soften a sample and assist a mechanical drilling component to break the sample, so as to realize the working state of laser-assisted rock breaking that can simulate the drilling process on the earth in lunar base environments at different depths, which is convenient for studying the influence of different pressures on the efficiency, accuracy, and service life of drilling equipment on samples in lunar base environments at different depths, making the experimental data more accurate and comprehensive, and facilitating the improvement of lunar drilling equipment and the improvement of performance such as the efficiency, accuracy, and service life of drilling equipment.

[0029] Furthermore, the gas in the experimental chamber can be extracted through a vacuum extraction device to meet the requirements of simulating the vacuum degree environment of lunar rocks; the confining pressure and axial pressure values can be set through a pressure environment simulation device to achieve the purpose of simulating the occurrence environment of lunar rocks at different depths.

[0030] Furthermore, the rock can be softened by laser and then mechanically drilled to achieve the purposes of improving rock breaking efficiency, reducing mechanical wear, and increasing drilling speed.

[0031] Furthermore, the laser-assisted rock breaking device for simulating different depths in a lunar rock environment also has the characteristics of simple operation, safety and reliability, and low cost, provides support for the research of deep space drilling technology, and will produce significant scientific and technological progress benefits.

[0032] To make the above objects, features, and advantages of the present invention more obvious and understandable, the following specifically enumerates preferred embodiments and, in conjunction with the accompanying drawings, is described in detail as follows. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a schematic diagram of the overall structure of the laser-assisted rock breaking device for simulating different depths in a lunar base environment according to an embodiment of the present invention;

[0035] Figure 2 It is a schematic diagram of the laser emission component according to an embodiment of the present invention;

[0036] Figure 3 It is a schematic diagram of the mechanical rock breaking component according to an embodiment of the present invention;

[0037] Figure 4Schematic diagram of the lunar-based different-depth simulation component according to an embodiment of the present invention;

[0038] Figure 5 Schematic diagram of the pressure environment simulation device according to an embodiment of the present invention;

[0039] Figure 6 Schematic diagram of the experimental chamber according to an embodiment of the present invention;

[0040] Figure 7 Schematic diagram of the vacuum extraction device according to an embodiment of the present invention;

[0041] Figure 8 Schematic diagram of the laser head according to an embodiment of the present invention;

[0042] Figure 9 Control flowchart of the drill control part according to an embodiment of the present invention;

[0043] Figure 10 Control flowchart of the laser control part according to an embodiment of the present invention;

[0044] Figure 11 Schematic diagram of the optical fiber fixing device according to an embodiment of the present invention.

[0045] Reference numerals:

[0046] 1 - Laser emission component; 2 - Mechanical rock breaking component; 3 - Lunar-based different-depth simulation component;

[0047] 11 - Laser generating host; 12 - Optical fiber; 13 - Laser head; 14 - Optical fiber fixing device;

[0048] 111 - Laser control part;

[0049] 131 - Laser emission hole; 132 - Convex lens;

[0050] 141 - Optical fiber fixing rod; 142 - Slip ring; 143 - Slip ring fixing rod; 144 - Thin-walled tube

[0051] 21 - Drill host; 22 - Mechanical drill bit; 23 - Drill pipe; 24 - Slide rail;

[0052] 211 - Drill control part;

[0053] 31 - Vacuum extraction device; 32 - Experimental chamber; 33 - Sample; 34 - Pressure environment simulation device;

[0054] 311 - Vacuum pump; 312 - Gas extraction pipe;

[0055] 321 - Sealing part; 322 - Box body;

[0056] 341 - Axial pressure simulation device; 342 - Confining pressure simulation device;

[0057] 3411 - Axial pressure indenter; 3412 - Axial pressure loading machine;

[0058] 3421 - Hydraulic oil; 3422 - Hydraulic film; 3423 - Hydraulic loading machine. Detailed implementation manners

[0059] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0060] As Figure 1 shown, the present invention provides a device for simulating laser-assisted rock breaking at different depths under a lunar base environment, including a laser emission component 1, a mechanical rock breaking component 2, and a lunar base different depth simulation component 3.

[0061] One end of the mechanical rock breaking component 2 is connected to the laser emission component 1, and the other end is disposed above the lunar base different depth simulation component 3.

[0062] The laser emission component 1 is used to generate and emit laser light. The mechanical rock breaking component 2 is used to physically break the sample 33. The lunar base different depth simulation component 3 is used to simulate the environment of the sample 33 at different depths.

[0063] The specific working process is as follows: The lunar base different depth simulation component 3 provides the preconditions of different pressures in a vacuum state. The laser emission component 1 emits laser light, irradiates the sample 33, and after acting for a period of time until the sample 33 is softened, the mechanical rock breaking component 2 is used to break the sample 33.

[0064] As Figure 1 、 2 and 9 shown, the laser emission component 1 includes a laser generating mainframe 11, an optical fiber 12, and a laser head 13. The laser generating mainframe 11 includes a housing and a laser control member 111. The housing is a hexahedron structure for protecting the laser control member 111 from being damaged by external forces. The laser control member 111 is disposed inside the housing and is used to generate high-energy laser light and adjust and control different laser working modes. The input end of the optical fiber 12 is connected to the laser generating mainframe 11, and the output end of the optical fiber 12 is connected to the laser head 13. The laser head 13 receives the signal transmitted from the output end of the optical fiber 12 and transmits the laser light generated by the laser generating mainframe 11 to the laser head 13 through the optical fiber 12.

[0065] As Figure 1 、 3As shown in FIGS. 9 and 10, the mechanical rock breaking assembly 2 includes a drilling rig mainframe 21, a mechanical drill bit 22, a drill pipe 23, and a slide rail 24. The drilling rig mainframe 21 includes a housing, a display, and a drilling rig control member 211. The housing is a hexahedron structure for protecting the drilling rig control member 211 from damage by external forces. The display is arranged on the surface of the housing for displaying the drilling speed and the penetration rate of the drilling rig operation. The drilling rig control member 211 is arranged inside the housing for providing power to the drilling rig, adjusting the drilling speed and the penetration rate.

[0066] The slide rail 24 is a concave slideway with an inner diameter size that can just fit the drill pipe 23. It is arranged inside the drilling rig mainframe 21 and fixedly connected to the housing. The drill pipe 23 is a cylinder, and the outer surface of the drill pipe 23 is embedded and connected to the inner wall of the slide rail 24, so that the drill pipe 23 can slide longitudinally along the slide rail 24.

[0067] The mechanical drill bit 22 is a sharp cone that can break rocks. The upper surface of the mechanical drill bit 22 is fixedly connected to the lower surface of the drill pipe 23, for realizing the sliding of the drill pipe 23 in the slide rail 24, driving the mechanical drill bit 22 to move synchronously, achieving the effect of controlling the movement and expansion of the mechanical drill bit 22, and facilitating rock breaking.

[0068] As Figure 1 、 4 shown, the lunar different-depth simulation assembly 3 includes a vacuum extraction device 31, an experimental chamber 32, a sample 33, and a pressure environment simulation device 34. The vacuum extraction device 31 is arranged outside the experimental chamber 32 for extracting the gas inside the experimental chamber 32 to reach the vacuum state set by the experiment. The sample 33 and the pressure environment simulation device 34 are arranged inside the experimental chamber 32 for ensuring that the experiment of the sample 33 is carried out in the set vacuum environment. The pressure environment simulation device 34 is placed on the upper and side parts of the sample 33 for setting a certain axial pressure and confining pressure value. The experimental chamber 32 is a rigid device for ensuring that the experimental chamber 32 does not deform in the vacuum state.

[0069] As Figure 5 shown, the pressure environment simulation device 34 includes an axial pressure simulation device 341 and a confining pressure simulation device 342. The axial pressure simulation device 341 completely covers the upper surface of the sample 33 for setting different axial pressure values, and the confining pressure simulation device 342 completely covers the side surface of the sample 33 for setting different confining pressure values.

[0070] Specifically, the axial compression simulation device 341 includes an axial compression indenter 3411 and an axial compression loading machine 3412. The axial compression loading machine 3412 is disposed above the axial compression indenter 3411. The axial compression indenter 3411 is provided with three circular small holes. The middle hole is larger than the left hole and the right hole. The middle hole is used for the drill tool to pass through, facilitating the mechanical drill bit 22 to contact the surface of the sample 33 for rock breaking. The left hole and the right hole are connected to the axial compression loading machine 3412, and the axial compression loading machine 3412 is used to apply axial compression and change the axial compression value of the axial compression indenter 3411.

[0071] The confining pressure simulation device 342 includes hydraulic oil 3421, a hydraulic film 3422, and a hydraulic loading machine 3423. The hydraulic oil 3421 is used to set different confining pressure values for the sample 33. The hydraulic oil 3421 completely wraps the side surface of the sample 33, and the confining pressure value for the sample 33 is changed by changing the pressure of the liquid. The hydraulic film 3422 is used to wrap the hydraulic oil 3421, enabling the hydraulic oil 3421 to be in close contact with the sample 33 to form a completely enclosed hydraulic loading cavity. The hydraulic loading machine 3423 is disposed outside the hydraulic film and is used to apply confining pressure and change the confining pressure value of the hydraulic oil 3421.

[0072] As Figure 6 shown, the experimental chamber 32 includes a seal 321 and a chamber body 322. The seal 321 is disposed above the chamber body 322. The seal 321 is an O-ring seal and is tightly attached to the chamber body 322 using magnetic fluid sealing technology. It is used to seal the chamber body 322, making the experimental chamber 32 in a sealed state.

[0073] A circular drill hole is provided in the middle of the seal 321. The size of the drill hole is just large enough to accommodate the drill pipe 23 to enter. This facilitates the drill pipe 23 to enter the experimental chamber 32 and ensures that the drill pipe 23 passes through the drill hole while the experimental chamber 32 remains in a sealed state, facilitating experiments on the sample 33 under a vacuum state.

[0074] As Figure 4 、 6 、7 shows, the vacuum extraction device 31 includes a vacuum pump and a gas extraction pipe 312. One end of the gas extraction pipe 312 is connected to the interface of the vacuum pump, and the other end is connected to the side wall of the experimental chamber 32. The gas extraction pipe 312 is used to discharge the air in the lunar rock bucket, and the vacuum pump is used to evacuate the experimental chamber 32 to a vacuum state to simulate the real lunar environment.

[0075] The specific working process is as follows: According to the requirements of the vacuum degree in the lunar rock occurrence environment at different depths, first turn on the vacuum pump 311 to extract the air in the experimental chamber 32 through the gas extraction pipe 312, so that the experimental chamber 32 reaches the set vacuum degree value.

[0076] As Figure 2 、 8As shown in the figure, the laser head 13 is provided with a circular laser emission hole 131 and a convex lens 132. The laser emission hole 131 is placed at the bottom of the laser head 13, and the convex lens 132 is placed inside the laser head 13 and above the laser head 13. The laser is transmitted through the optical fiber 12 to the output end of the optical fiber 12, and the signal is conveyed to the laser head 13, and the laser is radiated in the form of light. The laser radiated by the laser head 13 is collimated laser, which passes through a convex lens 132 to focus the laser and is emitted from the laser emission hole 131. The laser emission hole 131 is used to realize the emission of the laser, and the convex lens 132 is used to focus the laser. The focal position is changed by changing the distance between the convex lens 132 and the laser emission hole 131.

[0077] As Figure 9 shown in the figure, the control flowchart of the drilling rig control part 211. The drilling rig control part 211 sets the drilling speed and transmits the drilling speed signal to the signal receiving end of the drill pipe 23. The signal receiving end of the drill pipe 23 receives and processes the signal and transmits it to the signal output end of the drill pipe 23 to control the drill pipe 23 to operate at the set drilling speed.

[0078] At the same time, the drilling rig control part 211 sets the drilling depth, transmits the drilling depth signal to the signal receiving end of the drill pipe 23. The signal receiving end of the drill pipe 23 receives and processes the signal, adjusts the drilling depth of the drill pipe 23, and controls the drill pipe 23 and the mechanical drill bit 22 to operate at the set drilling depth.

[0079] As Figure 3 、 10 shown in the figure, the control flowchart of the laser control part 111 is that the laser generating host 11 has two working modes: normal working mode and pulse working mode.

[0080] When the laser generating host 11 is turned on and the laser control part 111 is set to the normal working mode, the input end of the optical fiber 12 receives the signal transmitted by the laser generating host 11, and the laser generated by the laser generating host 11 reaches the output end of the optical fiber 12 through the optical fiber 12. The output end of the optical fiber 12 transmits the signal to the laser head 13 to emit the laser.

[0081] When the laser generating host 11 is turned on and the laser control part 111 is set to the pulse working mode, at this time, the width and frequency of the laser are adjustable.

[0082] The laser generating host 11 sets the width value of the laser. The laser control part 111 receives the setting signal of the width value of the laser generating host 11, adjusts the width value of the laser. The input end of the optical fiber 12 receives the transmitted signal, and the adjusted laser reaches the output end of the optical fiber 12 through the optical fiber 12. The output end of the optical fiber 12 transmits the signal to the laser head 13 to emit the laser.

[0083] The laser generating mainframe 11 sets the frequency value of the laser. The laser control component 111 receives the setting signal of the frequency value from the laser generating mainframe 11, adjusts the frequency value of the laser. The input end of the optical fiber 12 receives the transmission signal, and the adjusted laser reaches the output end of the optical fiber 12 through the optical fiber 12. The output end of the optical fiber 12 transmits the signal to the laser head 13 to emit the laser.

[0084] As Figure 11 shown, the optical fiber fixing device 14 includes an optical fiber fixing rod 141, a slip ring fixing rod 143, a plurality of slip rings 142 and a thin-walled tube 144. The thin-walled tube 144 is a hollow annular pipe for laying the optical fiber 12. The slip ring 142 is an annular ring, and a plurality of slip rings 142 are arranged at a certain distance and placed outside the thin-walled tube 144. The slip ring 142 abuts against the thin-walled tube 144 and the drill pipe 23 for fixing the thin-walled tube 144 on the drill pipe 23. The optical fiber fixing rod 141, the slip ring fixing rod 143 and the optical fiber 12 are placed inside the thin-walled tube 144. The optical fiber fixing rod 141 is fixedly connected to the optical fiber 12, and the slip ring fixing rod 143 connects a plurality of slip rings 142 for fixing the plurality of slip rings 142 to keep the slip rings 142 stationary.

[0085] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A laser-assisted rock-breaking device for different depths under a simulated lunar base environment, characterized in that: It includes a laser emission component, a mechanical rock-breaking component, and a lunar-based different-depth simulation component. One end of the mechanical rock-breaking component is connected to the laser emission component, and the other end is arranged above the lunar-based different-depth simulation component. The laser emission component is used to assist the mechanical rock-breaking component in rock-breaking. The lunar-based different-depth simulation component includes a vacuum extraction device, an experimental chamber, a sample, and a pressure environment simulation device. The pressure environment simulation device and the sample are arranged inside the experimental chamber, and the vacuum extraction device is arranged outside the experimental chamber. The pressure environment simulation device includes an axial pressure simulation device and a confining pressure simulation device. The axial pressure simulation device is arranged above the sample and is used to set different axial pressures on the sample. The confining pressure simulation device is arranged on the side of the sample and is used to set different confining pressures on the sample. The axial pressure simulation device includes an axial pressure indenter, and the axial pressure indenter is in close contact with the upper part of the sample. The axial pressure indenter is used to control the axial pressure value of the sample; the confining pressure simulation device includes hydraulic oil, and the hydraulic oil is in close contact with the side of the sample. The hydraulic oil is used to control the confining pressure value of the sample. The laser emission component includes a laser generating mainframe, an optical fiber, and a laser head. The input end of the optical fiber is connected to the laser generating mainframe, and the output end of the optical fiber is connected to the laser head. The laser generating mainframe transports electrical energy to the laser head through the optical fiber to emit laser. The laser head is provided with a laser emission hole and a convex lens. The laser emission hole is arranged at the bottom of the laser head, and the convex lens is arranged above the laser emission hole. By changing the distance between the convex lens and the laser emission hole, the focal position is changed, so that the laser passes through the convex lens and is emitted from the laser emission hole to be focused on the sample.

2. The laser-assisted rock-breaking device for different depths under a simulated lunar base environment according to claim 1, characterized in that, The experimental chamber includes a seal and a chamber body. The sample is placed at the bottom of the chamber body; the seal is placed at the upper part of the chamber body, and the seal is hermetically connected to the chamber body to make the experimental chamber in a sealed state.

3. The laser-assisted rock-breaking device for different depths under a simulated lunar base environment according to claim 1, characterized in that, The vacuum extraction device includes a vacuum pump and a gas extraction pipe. One end of the gas extraction pipe is connected to the interface of the vacuum pump, and the other end is connected to the side wall of the experimental chamber. It is used for the vacuum pump to set the experimental chamber to a vacuum state through the gas extraction pipe.

4. The laser-assisted rock-breaking device for different depths under a simulated lunar base environment according to claim 1, characterized in that, The laser generating mainframe includes a housing and a laser control component. The laser control component is arranged inside the housing, and the housing is used to protect the laser control component from being damaged by external forces. The laser control component controls two working modes: a normal working mode and a pulse working mode. When the laser control component is set to the normal working mode, the input end of the optical fiber receives the signal transported by the laser generating mainframe, transports the laser generated by the laser generating mainframe through the optical fiber to the output end of the optical fiber, and the output end of the optical fiber transports the signal to the laser head to emit laser from the laser head. When the laser control component is set to the pulse working mode, the laser generating mainframe sets the width value and frequency value of the laser. The laser control component receives the setting signal from the laser generating mainframe, adjusts the laser, the optical fiber input end receives the transmission signal, and transmits the adjusted laser to the optical fiber output end through the optical fiber. The optical fiber output end transmits the signal to the laser head, and the laser is emitted from the laser head.

5. The laser-assisted rock-breaking device for different depths under a simulated lunar base environment according to claim 1, characterized in that, The mechanical rock breaking component includes a drilling rig mainframe, a mechanical drill bit, and a drill pipe. The access end of the drilling rig mainframe is connected to the mechanical drill bit through the drill pipe. The drilling rig mainframe includes a housing, a display, and a drilling rig control component. The drilling rig control component is arranged inside the housing, and the display is arranged on the outer surface of the housing. The display is used to display the working state of the drilling rig, and the drilling rig control component is used to control the drilling speed and drilling depth.

6. The laser-assisted rock-breaking device for different depths under a simulated lunar base environment according to claim 5, characterized in that, The mechanical rock breaking component includes a slide rail, which is placed inside the drilling rig mainframe. The slide rail is embedded and connected to the drill pipe, and the slide rail and the drilling rig control component control the vertical sliding of the drill pipe.

7. The laser-assisted rock-breaking device for different depths under a simulated lunar base environment according to claim 6, characterized in that, The laser emitting component includes an optical fiber fixing device, and the optical fiber fixing device includes an optical fiber fixing rod, a thin-walled tube, a slip ring, and a slip ring fixing rod. The optical fiber fixing rod, the slip ring fixing rod, and the optical fiber are placed inside the thin-walled tube. The slip ring is placed outside the thin-walled tube. The slip ring connects the thin-walled tube and the drill pipe. The slip ring fixing rod fixes the slip ring to keep the slip ring stationary. The optical fiber fixing rod fixes the optical fiber so that the optical fiber fixing rod and the slip ring fixing rod do not rotate when the drill pipe rotates, thereby preventing the slip ring from rotating.

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