Lunar surface building structure and in-situ construction method thereof

Abstract

The invention discloses a lunar surface building structure and an in-situ construction method thereof, and belongs to the technical field of in-situ construction of extraterrestrial celestial bodies, and the lunar surface building structure comprises a multi-layer lunar dust protection wall or a spiral lunar dust protection wall. The problems that residual lunar dust on the surface of a hardened layer, operation flying dust around a landing field fall on the surface of the hardened layer, and small particles generated when plume impacts the hardened layer in the landing and launching process impact and diffuse towards the periphery at a high speed under the action of the landing and launching plume are solved.

Description

Technical Field

[0001] This invention belongs to the field of in-situ construction technology of extraterrestrial bodies, and particularly relates to a lunar surface architectural structure and its in-situ construction method. Background Technology

[0002] The complex terrain and loose lunar regolith of the Moon pose adverse effects and risks of failure for spacecraft landing and launch. In particular, the dust generated by engine plumes during landing and launch has high-speed impacts and long-distance dispersion, seriously threatening astronaut or robotic operations, as well as scientific instruments and astronomical observations on the lunar surface. Therefore, the design and construction of lunar landing and launch site structures is a crucial issue in the field of lunar architecture and in-situ construction.

[0003] The concept of a lunar landing site has been proposed by academics both domestically and internationally, and technical approaches such as "in-situ sintering of lunar regolith bricks + laying of lunar regolith bricks" and "direct sintering of loose lunar regolith using a lunar rover carrying microwave and other sintering equipment" have been suggested. However, existing technical approaches still have the following shortcomings:

[0004] Existing technologies mainly involve lunar surface hardening, but they cannot solve the problems of residual lunar dust on the hardened layer surface, dust generated during operations around the landing site falling on the hardened layer surface, and tiny particles generated by the plume impacting the hardened layer during landing and launch being impacted and diffused at high speed by the landing and launch plume. These issues pose a threat to the life and property safety of astronauts or facilities / equipment around the landing and launch site, and cause serious interference to scientific exploration such as astronomy in the surrounding and more distant areas.

[0005] Existing technologies require high precision in the operation of in-situ lunar construction machinery, making it difficult to guarantee precision when constructing large-scale building structures. The lack of building structure module design and construction methods with large tolerance performance restricts the engineering of large-scale lunar construction. Summary of the Invention

[0006] The technical problem solved by this invention is to overcome the shortcomings of the prior art and provide a lunar surface building structure and its in-situ construction method, which solves the problems of residual lunar dust on the surface of the hardened layer, dust generated during operations around the landing site falling on the surface of the hardened layer, and tiny particles generated by the plume impacting the hardened layer during landing and launch impacting the surrounding area at high speed under the action of the landing and launch plume.

[0007] The objective of this invention is achieved through the following technical solution: a lunar surface architectural structure, comprising: a multi-layered lunar dust protection wall or a spiral lunar dust protection wall.

[0008] In the aforementioned lunar surface architectural structure, the multi-layer lunar dust protection wall includes N layers of walls; wherein, the N layers of walls are arranged sequentially from the inside out; each layer of walls has at least 2 wall gaps; in each layer of walls, each wall segment edge is provided with an ear wall; N is a positive integer and N≥2.

[0009] In the aforementioned lunar architectural structure, the radius of the area enclosed by the innermost wall is ≥50 meters; the width of the wall gap is ≥5 meters; the distance between adjacent wall layers is ≥5 meters; and the included angle θ between the gaps of two adjacent wall layers is ≥30°.

[0010] In the aforementioned lunar surface architectural structure, the spiral lunar dust protection wall is a spiral wall, with each 360° circle being one circle, for a total of M circles, where M is a positive integer and M≥2; the passage between adjacent circles is for the lunar surface movement system to enter and exit; multiple ear walls are provided on the inner side of the wall; the radius of the innermost circle is ≥50 meters; the distance between adjacent circles is ≥5 meters.

[0011] In the aforementioned lunar architectural structure, the minimum height of the wall is obtained based on the plume dust energy flux, whereby the plume dust energy flux Ψ is obtained using the following formula:

[0012]

[0013] Where ψ is the energy flux of the plume dust, and d p Where m is the particle diameter. p (d p V is the mass of the particle. p (d p ) represents the velocity of the particle, n p (d p ) is the number density distribution function of the particles, d(d p ) is the integral symbol for particle diameter.

[0014] In the aforementioned lunar architectural structures, the lower limit of the wall base thickness t min The following is obtained: For a wall of height H, the equivalent horizontal force F h The point of application is at height H / 2, and the overturning moment generated on the wall base is M. h =F h ×H / 2=m×a h ×H / 2=m×g m ×k h ×H / 2=M W ×k h ×H / 2; where m is the mass of the wall, g m It is the gravitational acceleration on the lunar surface, M W It is the vertical force generated by the weight of the wall itself, a h It is the horizontal inertial acceleration generated by moonquakes or vibrations of the lander's power source, k. hIt is the vibration horizontal influence coefficient; based on the middle one-third criterion, the eccentricity e is: e = M h / W=k h ×H / 2≤t min / 6; therefore, t min ≥3k h H.

[0015] In the aforementioned lunar architectural structures, both the multi-layered lunar dust protection wall and the spiral lunar dust protection wall are composed of multiple wall units.

[0016] In the aforementioned lunar architectural structure, each wall unit includes a cube and a frustum; wherein, the upper part of the cube has a frustum hole that matches the frustum; the frustum is disposed in the frustum hole.

[0017] In the aforementioned lunar architectural structure, the wall units are prefabricated, deployable lunar regolith boxes containing in-situ lunar regolith filling, or compacted / sintered lunar regolith blocks or bricks; the Earth mass of each wall unit is 2 to 3 times the robot's rated payload; the volume of each wall unit is 0.01 to 0.15 m³. 3 .

[0018] A method for in-situ construction of a lunar architectural structure includes: leveling loose lunar soil using a lunar bulldozer; excavating a lunar foundation pit for a lunar dust protection wall using a lunar excavator; hoisting wall units using a lunar hoist to form a lunar dust protection wall; deploying a prefabricated high-capacity structure on the lunar surface to form a precision take-off and landing platform capable of withstanding plume impacts; drilling into a predetermined depth on the lunar surface using an extendable drill rod attached to the high-capacity structure to install and fix the precision take-off and landing platform; and using a lunar mobile vehicle carrying sintering equipment to perform in-situ sintering of the loose lunar soil on the surface of the area enclosed by the lunar dust protection wall.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] (1) This invention solves the problems of residual lunar dust on the surface of the hardened layer, dust generated during operations around the landing site falling on the surface of the hardened layer, and tiny particles generated by the plume impacting the hardened layer during landing and launch, which are impacted and diffused at high speed to the surrounding area under the action of the landing and launch plume. This ensures the safety of astronauts or facilities / equipment around the landing and launch site, and ensures scientific exploration such as astronomy in the surrounding and more distant areas.

[0021] (2) This invention reduces the requirements for the end control accuracy of the mechanical system for in-situ construction on the lunar surface, and greatly improves the engineering feasibility of large-tolerance rapid construction based on hoisting machinery. Attached Figure Description

[0022] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0023] Figure 1 This is a schematic diagram of the multi-layered lunar dust protection wall provided in an embodiment of the present invention;

[0024] Figure 2 This is a schematic diagram of the spiral lunar dust protection wall provided in an embodiment of the present invention;

[0025] Figure 3 This is a sectional view of the wall unit provided in an embodiment of the present invention;

[0026] Figure 4 This is a top view of the wall unit provided in an embodiment of the present invention;

[0027] Figure 5 This is a flowchart of the in-situ construction method for lunar architectural structures provided in this embodiment of the invention. Detailed Implementation

[0028] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0029] This embodiment provides a lunar surface building structure, including: a multi-layered lunar dust protection wall or a spiral lunar dust protection wall.

[0030] like Figure 1 As shown, the multi-layered lunar dust protective wall includes N layers of walls; wherein, the N layers of walls are arranged sequentially from the inside to the outside; each layer of wall has no less than 2 wall gaps; in each layer of wall, each wall segment edge is provided with an ear wall; N is a positive integer and N≥2.

[0031] The radius of the area enclosed by the innermost wall is ≥50 meters; the width of the wall gap is ≥5 meters; the distance between adjacent walls is ≥5 meters; and the angle θ between the gaps of two adjacent walls is ≥30°.

[0032] like Figure 2As shown, the spiral lunar dust protection wall is a spiral wall with one circle every 360°, for a total of M circles, where M is a positive integer and M≥2; the passage between adjacent circles is for the lunar surface movement system to enter and exit; there are multiple ear walls on the inner side of the wall; the radius of the innermost circle is ≥50 meters; the distance between adjacent circles is ≥5 meters.

[0033] The minimum height of the wall is obtained based on the plume dust energy flux, where the plume dust energy flux Ψ is obtained by the following formula:

[0034]

[0035] Where ψ is the energy flux of the plume dust, and d p Where m is the particle diameter. p (d p V is the mass of the particle. p (d p ) represents the velocity of the particle, n p (d p ) is the number density distribution function of the particles, d(d p ) is the integral symbol for particle diameter.

[0036] Lower limit of wall bottom thickness t min The following is obtained: For a wall of height H, the equivalent horizontal force F h The point of application is at height H / 2, and the overturning moment generated on the wall base is M. h =F h ×H / 2=m×a h ×H / 2=m×g m ×k h ×H / 2=M W ×k h ×H / 2; where m is the mass of the wall, g m It is the gravitational acceleration on the lunar surface, M W It is the vertical force generated by the weight of the wall itself, a h It is the horizontal inertial acceleration generated by moonquakes or vibrations of the lander's power source, k. h It is the vibration horizontal influence coefficient; based on the middle one-third criterion, the eccentricity e is: e = M h / W=k h ×H / 2≤t min / 6; therefore, t min ≥3k h H.

[0037] Both the multi-layered lunar dust protective wall and the spiral lunar dust protective wall are composed of multiple wall units 7.

[0038] like Figure 3 and Figure 4As shown, each wall unit 7 includes a cube and a frustum; wherein, the upper part of the cube has a frustum hole that matches the frustum; the frustum is disposed in the frustum hole.

[0039] The wall units are prefabricated, deployable lunar regolith boxes containing in-situ lunar regolith filling, or compacted / sintered lunar regolith blocks or bricks; the Earth mass of each wall unit is 2 to 3 times the robot's rated payload; the volume of each wall unit is 0.01 to 0.15 m³. 3 .

[0040] This embodiment uses multi-layered or spiral-shaped lunar dust protection walls to protect against the high-speed impact and wide-area diffusion of plumes of dust generated during landing and launch. By reserving staggered gaps in different layers of walls or different rings of spiral walls, lunar rovers and other lunar surface mobility systems can enter and exit the landing and launch sites while preventing the overflow of plumes of dust. Multiple ear walls are added to the walls to impede circumferential dust. Through wall units with specific configurations, the upper and lower units can be self-centered during the wall construction process, thereby reducing the requirements for the end control precision of the in-situ lunar construction machinery and greatly improving the engineering feasibility of large-tolerance rapid construction based on hoisting machinery. The wall units are prefabricated deployable lunar soil boxes containing in-situ lunar soil filling on the ground, or lunar soil bricks sintered in-situ on the lunar surface. The process involves using a lunar bulldozer to level the loose lunar soil; using a lunar excavator to dig the lunar foundation pit for the lunar dust protection wall; using a lunar hoist to hoist the wall units to form the lunar dust protection wall; using a prefabricated high-capacity structure on the ground to unfold on the lunar surface to form a precision take-off and landing platform that can withstand plume impacts; using the extendable drill rods built into the high-capacity structure to drill into the lunar surface to a certain depth for the installation and fixation of the precision take-off and landing platform; using a lunar mobile vehicle carrying microwave and other sintering equipment to sinter the loose lunar soil on the surface of the area enclosed by the lunar dust protection wall in situ to achieve large-area hardening of the lunar surface at the landing and launch site; and directly connecting the launch site entrance and exit to the hardened lunar road outside the landing and launch site.

[0041] Multi-layered lunar dust protective wall, such as Figure 1 As shown, it consists of N layers of walls arranged from the inside out, such as the first layer 1, the second layer 2, etc., where N≥2. Each layer of walls has at least two wall gaps 3 for lunar rovers and other lunar surface movement systems to enter and exit. Each wall segment has two ear walls 4 at its edge to block circumferential dust. The radius of the area enclosed by the first layer of walls is R≥50 meters. The width of the wall gaps is W≥5 meters. The distance between adjacent wall layers is D≥5 meters. The angle between the gaps of two adjacent wall layers is θ≥30°. The radius of the precision take-off and landing platform 5 is r≥5 meters.

[0042] Spiral lunar dust protective wall Figure 2As shown, there is a spiral wall 6, with each 360° circle being one circle, for a total of M circles, where M≥2. The passage between adjacent circles is for the lunar rover and other lunar surface movement systems to enter and exit. Multiple ear walls are set on the inner side of the wall, with a number of ear walls ≥5, to block circumferential dust. The radius of the innermost circle is ≥50 meters. The distance between adjacent circles is D≥5 meters. The radius of the precision take-off and landing platform 5 is r≥5 meters.

[0043] Minimum height of each wall layer (H) min The design is primarily based on the assumption that the impact of plume dust energy flux (Ψ) is relatively small. Ψ refers to the sum of contributions from all particles of different sizes, which is obtained by integrating the differential of particle size, as follows:

[0044]

[0045] Where, d p It is the particle diameter, which is the integral variable; m p (d p ) is the mass of each particle; ν p (d p ) is the velocity of the particle; n p (d p () is the number density distribution function of the particles. Based on the common particle sizes and mass percentages of lunar soil, the minimum height H of the wall at a minimum inner radius of 50 meters is calculated. min When ≥2m, the Ψ value is relatively small. Therefore, H min ≥2m.

[0046] Considering vibration resistance (including moonquakes and the influence of power sources) and potential collapse, the lower limit of the bottom thickness of the lunar dust protection wall (t) is designed. min ),

[0047] For a gravity wall of height H, the equivalent horizontal force F h The point of application is at height H / 2.

[0048] The overturning moment (M) it generates on the base h ):

[0049] M h =F h ×H / 2=m×a h ×H / 2=m×g m ×k h ×H / 2=M W ×k h ×H / 2

[0050] Where m is the mass of the wall itself; g m This is the gravitational acceleration on the lunar surface, taken as 1.62 m / s²; M W It is the vertical force generated by the weight of the wall itself; a hIt is the horizontal inertial acceleration generated by moonquakes or vibrations of the lander's power source; k h It is the vibration level influence coefficient, which is an empirical value based on earthquakes and vibration risks of critical facilities, and is set to 0.1.

[0051] Based on the middle-third criterion, the eccentricity e is:

[0052] e = M h / W=k h ×H / 2≤t min / 6

[0053] Therefore, t min ≥3k h H,

[0054] When the minimum wall height H min =2m, obtain the thickness t at the bottom of the wall. min ≥0.6m.

[0055] Wall unit such as Figure 3 and Figure 4 As shown, the structure is an integrated structure with a cube and a frustum stacked on top of each other. The upper part of the cube has a hole for the frustum, and the shape and size of the hole and the frustum are the same to facilitate the installation of the upper and lower parts. The wall unit is a prefabricated unfoldable lunar soil box containing lunar soil filled in situ on the lunar surface, or a compacted / sintered lunar soil block or lunar soil brick. The two can be selected according to the requirements of the project.

[0056] Considering the robot's handling and lifting capabilities, the weight and volume of the wall units (lunar regolith boxes, lunar regolith blocks, or lunar regolith bricks) are designed. Although the lunar surface gravity is only g / 6, significantly reducing the gravitational load during robot lifting, inertial limitations and joint torque are not reduced due to the low gravity. In engineering, the Earth mass (M) of a single wall unit is considered... b Controlled within the robot's rated load (M r 2 to 3 times that of M b ≤(2~3)×M r M r =10~100kg, to obtain M b ≤20~300kg. Also considering the bulk density of the lunar soil material itself, ρ=1.8~2.2t / m³. 3 The average value is taken as 2.0 t / m. 3 The volume of a single wall unit is V. b =M b / ρ≤0.01~0.15m 3 .

[0057] Specifically, firstly, in combination with Figure 1 , Figure 3 and Figure 4This embodiment describes a lunar landing and launch site structure according to one implementation. The lunar landing and launch site structure includes:

[0058] It consists of a first wall 1 and a second wall 2 arranged from the inside out. Each wall has two gaps in the wall for lunar rovers and other lunar surface movement systems to enter and exit. There are two ear walls at the edge of each wall section to block circumferential dust. The radius R of the area enclosed by the first wall is 100 meters. The width W of the wall gap is 10 meters. The distance D between adjacent wall layers is 10 meters. The angle between the gaps of two adjacent wall layers is close to 90°. The radius r of the precision take-off and landing platform is 5 meters. The wall height H is 3 meters. The thickness d at the bottom of the wall is 0.6 meters.

[0059] Furthermore, the wall unit is a prefabricated, deployable lunar regolith box, compacted / sintered lunar regolith block, or lunar regolith brick containing in-situ lunar regolith filling on the lunar surface, offering the advantage of high construction efficiency. The wall unit structure is an integrated structure of cubes and frustums stacked vertically, with a frustum hole at the top of the cube. The shape and size of the frustum hole are identical to the frustum itself, facilitating vertical assembly. Considering the robot's rated load capacity M... r It weighs 25 kg; the Earth mass M of a single wall unit b It weighs 72 kg; the volume of a single wall unit is 0.036 m³. 3 .

[0060] Then combine Figure 2 , Figure 3 and Figure 4 This describes another embodiment of the lunar landing and launch site structure. The lunar landing and launch site structure includes:

[0061] The spiral-shaped lunar dust protection wall consists of two rings, each measuring 360°. The passage between adjacent rings allows access for lunar rovers and other lunar surface movement systems. Ten ear walls are installed on the inner side of the wall to impede circumferential dust. The innermost ring has a radius of 100 meters; the distance between adjacent rings (D) is 10 meters; the radius (r) of the precision take-off and landing platform is 5 meters; the wall height (H) is 3 meters; and the thickness (d) at the base of the wall is 0.6 meters.

[0062] Furthermore, the wall unit is a prefabricated, deployable lunar regolith box, compacted / sintered lunar regolith block, or lunar regolith brick containing in-situ lunar regolith filling on the lunar surface, offering the advantage of high construction efficiency. The wall unit structure is an integrated structure of cubes and frustums stacked vertically, with a frustum hole at the top of the cube. The shape and size of the frustum hole are identical to the frustum itself, facilitating vertical assembly. Considering the robot's rated load capacity M... r The mass of a single wall unit is 50 kg; the Earth mass M of a single wall unit is... b It weighs 100 kg; the volume of a single wall unit is 0.05 m³. 3 .

[0063] like Figure 5 As shown in the figure, this embodiment also provides a method for in-situ construction of lunar architectural structures, the method comprising:

[0064] Use lunar bulldozers to level the loose lunar soil.

[0065] A lunar crater was dug using a lunar excavator to create a protective wall against lunar dust.

[0066] The wall units were hoisted using a lunar surface hoisting machine to form a lunar dust protective wall;

[0067] A high-capacity structure prefabricated on the ground is deployed on the lunar surface to form a precision take-off and landing platform that can withstand the impact of plumes. The extendable drill rod of the high-capacity structure is used to drill into the lunar surface to a predetermined depth for the installation and fixation of the precision take-off and landing platform.

[0068] Using a lunar rover carrying sintering equipment, the loose lunar soil on the surface of the area enclosed by the lunar dust protective wall was sintered in situ to achieve large-area hardening of the lunar surface at the landing and launch sites. The launch site entrance and exit are directly connected to the hardened lunar surface road outside the landing and launch sites.

[0069] The method also includes: using a lightweight lunar 3D printer (lunar rover + 3D printing robotic arm) to extrude or spray materials to fill gaps in the wall, and printing a coating on the wall surface to improve the protective effect and the wall's lifespan. This step follows the formation of the lunar dust protective wall.

[0070] Specifically, the method for constructing the lunar landing and launch site structure includes the following steps:

[0071] The loose lunar soil was leveled using a lunar bulldozer, and the leveled area was a circular area with a diameter of 250 meters.

[0072] A lunar excavator was used to dig out the lunar foundation pit for the lunar dust protective wall. The lunar foundation pit is 0.5 meters wide and 1 meter deep.

[0073] The wall units were hoisted using a lunar surface hoisting machine to form a double-layer lunar dust protective wall, with a wall width of 0.5 meters and a height of 3 meters above the lunar surface;

[0074] By using a lightweight lunar 3D printer (lunar mobile vehicle + 3D printing robotic arm) to extrude polymer lunar soil composite material to fill the gaps in the wall, and to print a polymer lunar soil composite material coating on the wall surface, the protective effect and the life of the wall can be improved.

[0075] A high-capacity structure prefabricated on the ground is deployed on the lunar surface to form a precision take-off and landing platform that can withstand the impact of plumes. The extendable drill rod of the high-capacity structure is used to drill into the lunar surface to a depth of 5 meters for the installation and fixation of the precision take-off and landing platform. The radius of the precision take-off and landing platform is 5 meters.

[0076] Using a lunar rover carrying microwave sintering equipment, the loose lunar soil on the surface of the area enclosed by the lunar dust protective wall is sintered in situ to achieve large-area hardening of the lunar surface at the landing and launch sites. The hardened layer has a strength of 15-25 MPa and is directly connected to the hardened lunar road outside the landing and launch sites at the entrance and exit of the launch site.

[0077] This embodiment solves the problems of residual lunar dust on the hardened layer surface, dust generated during operations around the landing site settling on the hardened layer surface, and tiny particles generated by the plume impacting the hardened layer during landing and launch, which then impact and diffuse at high speeds into the surrounding area under the influence of the landing and launch plume. This ensures the safety of astronauts or facilities / equipment around the landing and launch site, and guarantees scientific exploration such as astronomy in the surrounding and more distant areas. This embodiment also reduces the requirements for the end-effector control precision of the in-situ lunar construction machinery, and significantly improves the engineering feasibility of large-tolerance rapid construction based on hoisting machinery.

[0078] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make possible changes and modifications to the technical solutions of the present invention by utilizing the methods and techniques disclosed above without departing from the spirit and scope of the present invention. Therefore, any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solutions of the present invention shall fall within the protection scope of the technical solutions of the present invention.

Claims

1. A lunar architectural structure, characterized in that... include: Multi-layered lunar dust protection wall or spiral lunar dust protection wall.

2. The lunar surface architecture structure according to claim 1, characterized in that: The multi-layered lunar dust protective wall comprises N layers; wherein... The N-layer wall is arranged sequentially from the inside out; Each wall layer has at least two wall gaps; In each layer of the wall, an ear wall is provided at the edge of each section of the wall; N is a positive integer and N≥2.

3. The lunar architectural structure according to claim 2, characterized in that: The radius of the area enclosed by the innermost wall is ≥50 meters; the width of the wall gap is ≥5 meters; the distance between adjacent walls is ≥5 meters; and the angle θ between the gaps of two adjacent walls is ≥30°.

4. The lunar architectural structure according to claim 1, characterized in that: The spiral lunar dust protection wall is a spiral wall with one circle every 360°, for a total of M circles, where M is a positive integer and M≥2; the passage between adjacent circles is for the lunar surface movement system to enter and exit; multiple ear walls are set on the inner side of the wall; the radius of the innermost circle is ≥50 meters; the distance between adjacent circles is ≥5 meters.

5. The lunar architectural structure according to any one of claims 2-4, characterized in that: The minimum height of the wall is obtained based on the plume dust energy flux, where the plume dust energy flux Ψ is obtained by the following formula: Where ψ is the energy flux of the plume dust, and d p Where m is the particle diameter. p (d p V is the mass of the particle. p (d p ) represents the velocity of the particle, n p (d p ) is the number density distribution function of the particles, d(d p ) is the integral symbol for particle diameter.

6. The lunar architectural structure according to any one of claims 2-4, characterized in that: Lower limit of wall bottom thickness t min This is obtained through the following: For a wall of height H, the equivalent horizontal force F h The point of application is at height H / 2, and the overturning moment generated on the wall base is M. h =F h ×H / 2=m×a h ×H / 2=m×g m ×k h ×H / 2=M W ×k h ×H / 2; where m is the mass of the wall, g m It is the gravitational acceleration on the lunar surface, M W It is the vertical force generated by the weight of the wall itself, a h It is the horizontal inertial acceleration generated by moonquakes or vibrations of the lander's power source, k. h It is the vibration level influence coefficient; Based on the middle-third criterion, the eccentricity e is: e = M h / W=k h ×H / 2≤t min / 6; Therefore, t min ≥3k h H.

7. The lunar architectural structure according to any one of claims 2-4, characterized in that: Both multi-layered lunar dust protection walls and spiral lunar dust protection walls are composed of multiple wall units.

8. The lunar architectural structure according to any one of claims 7, characterized in that: Each wall unit comprises a cube and a frustum; wherein, The upper part of the cube has a frustum hole that matches the frustum. The truncated cone is disposed within the truncated cone hole.

9. The lunar architectural structure according to any one of claims 8, characterized in that: The wall unit is a prefabricated, expandable lunar soil box containing in-situ lunar soil filling, or a compacted / sintered lunar soil block or lunar soil brick. The Earth mass of each wall unit is 2 to 3 times the robot's rated load capacity; The volume of each wall unit is 0.01–0.15 m³. 3 .

10. A method for in-situ construction of a lunar architectural structure, characterized in that... include: Use lunar bulldozers to level the loose lunar soil. A lunar crater was dug using a lunar excavator to create a protective wall against lunar dust. The wall units were hoisted using a lunar surface hoisting machine to form a lunar dust protective wall; A high-capacity structure prefabricated on the ground is deployed on the lunar surface to form a precision take-off and landing platform that can withstand the impact of plumes. The extendable drill rod of the high-capacity structure is used to drill into the lunar surface to a predetermined depth for the installation and fixation of the precision take-off and landing platform. A lunar rover carrying sintering equipment was used to sinter the loose lunar soil on the surface of the area enclosed by the lunar dust protective wall in situ.

Images