Extreme environment deep sedimentary rock soil layer test platform and construction method

Abstract

The invention discloses a test platform for a deep sedimentary rock soil layer in an extreme environment and a building method. The test platform comprises a vacuum base, a hollow transparent cover, a vacuum top plate, a first temperature control assembly, a second temperature control assembly, a plurality of sample loading assemblies and a plurality of gas filling pipes, one end of the hollow transparent cover is fixed on the vacuum base, and the other end is fixed on the vacuum top plate to construct a vacuum environment; the first temperature control assembly is fixed to the top face of the vacuum base, the second temperature control assembly is fixed to the bottom face of the vacuum top plate, the multiple sample loading assemblies are sequentially stacked between the first temperature control assembly and the second temperature control assembly till the target height is reached, and each sample loading assembly is filled with a corresponding simulated rock-soil sample. Confining pressure is applied to the simulated rock-soil sample through the inflation pipe, so that the deposition state of a deep rock-soil layer on the surface of an extraterrestrial planet is truly simulated, a test platform is provided for a ground simulation drilling test, and the feasibility of a deep drilling technology is verified.

Description

Technical Field

[0001] The present invention belongs to the technical field of rock and soil mechanics drilling tests, and in particular relates to a test platform for deep sedimentary rock and soil layers in extreme environments and a construction method thereof. Background Art

[0002] With the rapid development of deep space exploration technology, the exploration of exoplanets, such as the Moon, Mars, and asteroids, has become a core mission of space programs worldwide. This exploration involves drilling and sampling of extraterrestrial bodies, mineral resource development, and in-situ resource utilization. However, the extreme environments on the surfaces of exoplanets, including high vacuum, large temperature differences, strong radiation, microgravity, and complex topography (such as craters, slopes, and lunar regolith), pose severe challenges to the reliability of lander drilling and sampling, the durability of materials, and the accuracy of scientific instruments. The main challenge in current research on rock and soil drilling on exoplanets is how to simulate the true state of deep strata in vacuum and extreme temperature environments.

[0003] At present, different test platforms have been built at home and abroad for drilling and sampling of extraterrestrial planets. These test platforms can use different rock and soil materials to simulate the sedimentary state of the lunar surface rock and soil layer according to the stratum state of the lunar surface. The rock and soil layer of the test platform currently built is relatively shallow, making it difficult to simulate the state of the drill bit during deep drilling. At the same time, due to different upper pressures and external disturbances, the density, porosity, particle size and confining pressure of the soil at different depths on the lunar surface are significantly different. It is crucial to use the sedimentary rock and soil layer test platform to control the sedimentation state of the soil at different depths. On the other hand, the existing stratum simulation test platform cannot achieve simultaneous loading of vacuum environment and extreme temperature, making it difficult to test the thermal stability of the drill bit during drilling.

[0004] Therefore, how to build an extreme environment deep sedimentary rock and soil layer test platform that can simulate the actual sedimentary state of deep rock and soil layers on the surface of extraterrestrial planets, and combine vacuum environment with extreme temperature to provide a test platform for ground simulation drilling tests, is a technical problem that technical personnel in this field urgently need to solve. Summary of the Invention

[0005] The purpose of the present invention is to provide a deep sedimentary rock and soil layer test platform and construction method for extreme environments, so as to solve at least one of the above-mentioned technical problems.

[0006] To achieve the above-mentioned objectives, the first aspect of the present invention provides an extreme environment deep sedimentary rock and soil layer test platform, the test platform comprising: a vacuum simulation device, comprising a vacuum base, a hollow transparent cover and a vacuum top plate; one end of the hollow transparent cover is fixed to the vacuum base, and the other end of the hollow transparent cover is fixed to the vacuum top plate; a plurality of ventilation holes are opened on the side wall of the hollow transparent cover; an extreme temperature loading device, comprising a first temperature control component and a second temperature control component, the first temperature control component is fixed to the top surface of the vacuum base, and the second temperature control component is fixed to the bottom surface of the vacuum top plate, The first temperature control component and the second temperature control component are both located in the hollow transparent cover; a plurality of sample loading components, and a plurality of the sample loading components are stacked in sequence between the first temperature control component and the second temperature control component; each of the sample loading components is filled with a corresponding simulated rock and soil sample, and an inflation hole is opened on one side of each of the test loading components; a plurality of inflation tubes, one end of each of the inflation tubes passes through a corresponding one of the ventilation tube holes and is fixedly connected to a corresponding one of the inflation holes, and the other end of each of the inflation tubes is connected to an external air pump for applying confining pressure to the simulated rock and soil sample.

[0007] In the first aspect, each of the sample loading assemblies includes: a square soil box formed by four steel plates connected vertically end to end, and two adjacent steel plates are connected by bosses, one of the steel plates is provided with an inflation hole for connecting a corresponding inflation tube; each of the bosses is provided with a tubular air vent; a first inflatable rubber bag, the first inflatable rubber bag is attached to the inner wall of one of the steel plates and is provided with an opening adapted to the inflation hole, and the side of the first inflatable rubber bag is provided with a flow hole adapted to the tubular air vent; three second inflatable rubber bags, the sides of the three second inflatable rubber bags are provided with a flow hole adapted to the tubular air vent, and each second inflatable rubber bag is attached to the inner wall of a corresponding one of the steel plates; wherein the simulated rock and soil sample is located in a space enclosed by the first inflatable rubber bag and the three second inflatable rubber bags; the bottom square soil box is arranged above the first temperature control assembly, and the top square soil box is arranged below the second temperature control assembly.

[0008] In the first aspect, the vacuum base includes: a frame bottom plate, the top surface of which is provided with four first grooves, the frame bottom plate being fixedly connected to one end of the hollow transparent cover via a first sealing ring; four columns arranged corresponding to the four first grooves, one end of the column being fixedly connected to the frame bottom plate via a corresponding first groove, and the other end of the column being fixedly connected to the vacuum top plate; and a plurality of guide wheels, each of which is provided on one side of the column for contacting the inner wall of the hollow transparent cover.

[0009] In the first aspect, the hollow transparent cover includes several vacuum transparent outer cylinders, and several ventilation holes are opened on the side wall of each of the vacuum transparent outer cylinders; several vacuum transparent outer cylinders are stacked in sequence to a preset height, and the outer sides of two adjacent vacuum transparent outer cylinders are provided with flanges and fixedly connected by bolts; wherein, the vacuum transparent outer cylinder of the bottom layer is fixedly connected to the frame bottom plate through a first sealing ring, and the vacuum transparent outer cylinder of the top layer is fixedly connected to the vacuum top plate through a second sealing ring.

[0010] In the first aspect, the vacuum top plate includes: a frame top plate, the bottom surface of the frame top plate is provided with a second groove adapted to the column, and the other end of the column is fixedly connected to the frame top plate through a corresponding second groove; a plurality of vacuum extraction holes are provided at the edge of the frame top plate; a sealing column, the sealing column is provided through the center of the frame top plate, and a loading hole is provided in the center of the sealing column for arranging a drill rod; wherein, the frame top plate is fixedly connected to the vacuum transparent outer cylinder of the top layer through a second sealing ring.

[0011] In the first aspect, the first temperature control assembly includes: a lower temperature control plate, the lower temperature control plate being fixedly arranged between the square soil box of the bottom layer and the frame bottom plate, a first liquid nitrogen circulation hole being provided on one side of the lower temperature control plate, a first electromagnetic heating wire hole being provided on the other side of the lower temperature control plate, and a first temperature sensor being provided inside the lower temperature control plate; a plurality of first electromagnetic heating plates, the plurality of first electromagnetic heating plates being arranged at intervals on the lower temperature control plate, and the plurality of first electromagnetic heating plates being arranged in series through wires; a first liquid nitrogen refrigeration circulation pipe, the first liquid nitrogen refrigeration circulation pipe being embedded in the interior of the lower temperature control plate; a first vacuum liquid nitrogen circulation pipe, one end of the first vacuum liquid nitrogen circulation pipe being fixedly connected to the first liquid nitrogen circulation hole, the other end of the first vacuum liquid nitrogen circulation pipe being connected to an external liquid nitrogen circulation pipe through the first sealing ring, and one end of the first vacuum liquid nitrogen circulation pipe being provided with a first pressure sensor; a first electromagnetic heating wire pipe, one end of the first electromagnetic heating wire pipe being fixedly connected to the first electromagnetic heating wire hole, the other end of the first electromagnetic heating wire pipe being passed through the first sealing ring, so that the wire in the first electromagnetic heating wire pipe is connected to an external power supply.

[0012] In the first aspect, the second temperature control component includes: an upper temperature control plate, a through hole matching the size of the sealing column is opened in the center of the upper temperature control plate, the upper temperature control plate is fixedly arranged between the square soil box on the top layer and the frame top plate, a second liquid nitrogen circulation hole is arranged on one side of the upper temperature control plate, a second electromagnetic heating wire hole is arranged on the other side of the upper temperature control plate, and a second temperature sensor is arranged inside the upper temperature control plate; a plurality of second electromagnetic heating plates, a plurality of the second electromagnetic heating plates are arranged at intervals on the bottom surface of the upper temperature control plate, and a plurality of the second electromagnetic heating plates are arranged in series through wires; a second liquid nitrogen refrigeration circulation pipe, the second liquid A nitrogen refrigeration circulation pipe is embedded in the interior of the upper temperature control plate; a second vacuum liquid nitrogen circulation pipe, one end of the second vacuum liquid nitrogen circulation pipe is fixedly connected to the second liquid nitrogen circulation hole, the other end of the second vacuum liquid nitrogen circulation pipe is connected to the external liquid nitrogen circulation pipe through the second sealing ring, and a second pressure sensor is provided at one end of the second vacuum liquid nitrogen circulation pipe; a second electromagnetic heating wire pipe, one end of the second electromagnetic heating wire pipe is fixedly connected to the second electromagnetic heating wire hole, the other end of the second electromagnetic heating wire pipe is passed through the second sealing ring, so that the wire in the second electromagnetic heating wire pipe is connected to the external power supply.

[0013] In the first aspect, the extreme temperature loading device further comprises a PID controller, which is communicatively connected to the first temperature sensor, the second temperature sensor, the second pressure sensor and the second pressure sensor, and is used to adjust the liquid nitrogen flow rate and the electromagnetic heating power.

[0014] The second aspect of the present invention provides a method for constructing an extreme environment deep sedimentary rock and soil layer test platform as described in the first aspect, the construction method comprising: installing a vacuum base and a first temperature control component; installing a hollow transparent cover and a sample loading component, and filling the sample loading component with corresponding simulated rock and soil samples to prepare simulated formation samples; installing a second temperature control component and a vacuum top plate; installing an inflation tube, and debugging it to conform to the sedimentary state of the deep rock and soil layer on the surface of an extraterrestrial planet.

[0015] In the second aspect, the installation of the hollow transparent cover and the sample loading assembly includes: attaching a first inflatable rubber bag and three second inflatable rubber bags to the inner wall of a square soil box so that the tubular vents and the flow holes are aligned; filling the space enclosed by the first inflatable rubber bag and the three second inflatable rubber bags with corresponding simulated rock and soil samples in layers, and compacting them layer by layer to a target density using an electric compactor; and stacking the sample loading assembly filled with the simulated rock and soil samples and the vacuum transparent outer cylinder in sequence to a target height using a hydraulic lifting device.

[0016] Beneficial effects:

[0017] The present invention provides an extreme environment deep sedimentary rock and soil layer test platform, comprising a vacuum simulation device, an extreme temperature loading device, a plurality of sample loading components and a plurality of gas-filled tubes; the vacuum simulation device comprises a vacuum base, a hollow transparent cover and a vacuum top plate, one end of the hollow transparent cover is fixedly arranged on the vacuum base, and the other end of the hollow transparent cover is fixedly arranged on the vacuum top plate, and a vacuum environment is constructed by the vacuum base, the hollow transparent cover and the vacuum top plate; the extreme temperature loading device comprises a first temperature control component and a second temperature control component, the first temperature control component is fixedly arranged on the top surface of the vacuum base, and the second temperature control component is fixedly arranged on the bottom surface of the vacuum top plate, and the first temperature control component and the second temperature control component are both located in the hollow transparent cover, and a plurality of sample loading components are simultaneously The components are stacked sequentially between the first and second temperature control components until the target height is reached. A corresponding simulated rock and soil sample is filled in each sample loading component. By adjusting the first and second temperature control components, the simulated rock and soil sample is kept at an ultra-low or ultra-high temperature under a vacuum environment. In addition, a plurality of vent holes are opened on the side wall of the hollow transparent cover, and an inflation hole is opened on one side of each test loading component. One end of each inflation tube passes through a corresponding vent hole and is fixedly connected to a corresponding inflation hole. The other end of each inflation tube is connected to an external air pump to apply confining pressure to the simulated rock and soil sample in the sample loading component through the inflation tube, thereby simulating the actual sedimentation state of deep rock and soil layers on the surface of an extraterrestrial planet. The present invention provides an extreme environment deep sedimentary rock and soil layer test platform. The vacuum simulation device and the extreme temperature loading device are used to achieve simultaneous loading of the vacuum environment and extreme temperature. The formation loading structure formed by stacking a plurality of sample loading components in sequence can realistically simulate the sedimentation state of deep rock and soil layers on the surface of an extraterrestrial planet, thereby providing a test platform for ground simulation drilling tests and verifying the feasibility of deep drilling technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of this specification or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a schematic structural diagram of an extreme environment deep sedimentary rock and soil layer test platform of the present invention;

[0020] Figure 2 This is a cross-sectional schematic diagram of an extreme environment deep sedimentary rock and soil layer test platform of the present invention;

[0021] Figure 3 It is a structural diagram of the square soil box in the present invention;

[0022] Figure 4 It is a structural schematic diagram of the first inflatable rubber bag in the present invention.

[0023] Figure 5 It is a structural diagram of the first temperature control component in the present invention;

[0024] Figure 6 It is a structural schematic diagram of the second temperature control component in the present invention;

[0025] Reference numerals:

[0026] 1. Vacuum simulation device; 11. Vacuum base; 111. Frame bottom plate; 112. Column; 113. Guide wheel; 114. First sealing ring; 12. Hollow transparent cover; 121. Vacuum transparent outer cylinder; 122. Ventilation hole; 123. Flange; 124. Bolt; 13. Vacuum top plate; 131. Frame top plate; 132. Second sealing ring; 133. Sealing column; 134. Vacuum extraction hole; 135. Loading hole; 136. Drill rod;

[0027] 2. Extreme temperature loading device; 21. First temperature control assembly; 211. Lower temperature control plate; 212. First electromagnetic heating plate; 213. First liquid nitrogen refrigeration circulation pipe; 214. First vacuum liquid nitrogen circulation pipe; 215. First electromagnetic heating wire pipe; 216. First liquid nitrogen circulation hole; 217. First electromagnetic heating wire hole;

[0028] 22. Second temperature control assembly; 221. Upper temperature control plate; 222. Second electromagnetic heating plate; 223. Second liquid nitrogen refrigeration circulation pipe; 224. Second vacuum liquid nitrogen circulation pipe; 225. Second electromagnetic heating wire pipe; 226. Second liquid nitrogen circulation hole; 227. Second electromagnetic heating wire hole; 228. Through hole;

[0029] 3. Sample loading assembly; 31. Square soil box; 311. Steel plate; 312. Boss; 313. Inflatable hole; 314. Tubular vent; 32. First inflatable rubber bag; 321. Opening; 322. Flow hole; 4. Inflatable tube. DETAILED DESCRIPTION

[0030] The following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0031] Example 1

[0032] See also Figure 1-2The present invention provides a deep sedimentary rock and soil layer test platform in an extreme environment, the test platform comprising: a vacuum simulation device 1, comprising a vacuum base 11, a hollow transparent cover 12 and a vacuum top plate 13; one end of the hollow transparent cover 12 is fixed to the vacuum base 11, and the other end of the hollow transparent cover 12 is fixed to the vacuum top plate 13; a plurality of ventilation holes 122 are opened on the side wall of the hollow transparent cover 12; an extreme temperature loading device 2, comprising a first temperature control component 21 and a second temperature control component 22, the first temperature control component 21 is fixed to the top surface of the vacuum base 11, the second temperature control component 22 is fixed to the bottom surface of the vacuum top plate 13, and the second temperature control component 22 is fixed to the bottom surface of the vacuum top plate 13. A temperature control component 21 and a second temperature control component 22 are both located in the hollow transparent cover 12; a plurality of sample loading components 3, and a plurality of the sample loading components 3 are stacked in sequence between the first temperature control component 21 and the second temperature control component 22; each of the sample loading components 3 is filled with a corresponding simulated rock and soil sample, and an inflation hole 313 is opened on one side of each of the test loading components; a plurality of inflation tubes 4, one end of each of the inflation tubes 4 passes through a corresponding one of the vent holes 122 and is fixedly connected to a corresponding one of the inflation holes 313, and the other end of each of the inflation tubes 4 is connected to an external air pump for applying confining pressure to the simulated rock and soil sample.

[0033] Specifically, the present invention provides an extreme environment deep sedimentary rock and soil layer test platform, including a vacuum simulation device 1, an extreme temperature loading device 2, a plurality of sample loading components 3 and a plurality of inflation tubes 4; the vacuum simulation device 1 includes a vacuum base 11, a hollow transparent cover 12 and a vacuum top plate 13, one end of the hollow transparent cover 12 is fixedly arranged on the vacuum base 11, and the other end of the hollow transparent cover 12 is fixedly arranged on the vacuum top plate 13, and a vacuum environment is constructed by the vacuum base 11, the hollow transparent cover 12 and the vacuum top plate 13; the extreme temperature loading device 2 includes a first temperature control component 21 and a second temperature control component 22, the first temperature control component 21 is fixedly arranged on the top surface of the vacuum base 11, the second temperature control component 22 is fixedly arranged on the bottom surface of the vacuum top plate 13, and the first temperature control component 21 and the second temperature control component 22 are both located in the hollow transparent cover 12 At the same time, several sample loading assemblies 3 are sequentially stacked between the first temperature control assembly 21 and the second temperature control assembly 22 until the target height is reached. The corresponding simulated rock and soil sample is filled in each sample loading assembly 3. By adjusting the first temperature control assembly 21 and the second temperature control assembly 22, the simulated rock and soil sample is kept at ultra-low temperature or ultra-high temperature under a vacuum environment. In addition, several ventilation holes 122 are provided on the side wall of the hollow transparent cover 12, and an inflation hole 313 is provided on one side of each test loading assembly. One end of each inflation tube 4 passes through a corresponding ventilation hole 122 and is fixedly connected to a corresponding inflation hole 313. The other end of each inflation tube 4 is connected to an external air pump to apply confining pressure to the simulated rock and soil sample in the sample loading assembly 3 through the inflation tube 4, thereby simulating the real sedimentation state of the deep rock and soil layer on the surface of an extraterrestrial planet. The present invention provides an extreme environment deep sedimentary rock and soil layer test platform, which realizes simultaneous loading of vacuum environment and extreme temperature through a vacuum simulation device 1 and an extreme temperature loading device 2, and a formation loading structure composed of a plurality of sample loading assemblies 3 stacked in sequence to realistically simulate the sedimentary state of deep rock and soil layers on the surface of an extraterrestrial planet, thereby providing a test platform for ground simulation drilling tests and verifying the feasibility of deep drilling technology.

[0034] It should be noted that in the present application, the number and height of the sample loading assemblies 3 can be determined according to the depth of the rock and soil layer required by the deep drilling technology, so that the deep sedimentary rock and soil layer under the simulated vacuum extreme temperature environment is closer to the real environment.

[0035] For some possible implementations, see Figure 3-4Each of the sample loading components 3 includes: a square soil box 31, which is formed by four steel plates 311 connected vertically end to end, and two adjacent steel plates 311 are connected by bosses 312, one of which is provided with an inflation hole 313 for connecting a corresponding inflation tube 4; each of the bosses 312 is provided with a tubular vent 314; a first inflatable rubber bag 32, which is attached to the inner wall of one of the steel plates 311 and is provided with an opening 321 adapted to the inflation hole 313, and the side opening of the first inflatable rubber bag 32 is provided with a gas hole 313; It is provided with a flow air hole 322 that is compatible with the tubular vent hole 314; three second inflatable rubber bags, each of which has a flow air hole 322 that is compatible with the tubular vent hole 314 on its side, and each second inflatable rubber bag is attached to the inner wall of a corresponding steel plate 311; wherein the simulated rock and soil sample is located in the space enclosed by the first inflatable rubber bag 32 and the three second inflatable rubber bags; the square soil box 31 of the bottom layer is arranged above the first temperature control component 21, and the square soil box 31 of the top layer is arranged below the second temperature control component 22.

[0036] Specifically, each sample loading assembly 3 includes a square soil box 31, a first inflatable rubber bag 32 and three second inflatable rubber bags. The square soil box 31 is formed by four steel plates 311 connected vertically end to end in sequence, and two adjacent steel plates 311 are connected by a boss 312, so that a boss 312 is provided at both ends of a steel plate 311, thereby forming an accommodating space, and the first inflatable rubber bag 32 and the three second inflatable rubber bags are located in a corresponding accommodating space. The width of the boss 312 is the same as the thickness of the first inflatable rubber bag 32 and the second inflatable rubber bag, so that the first inflatable rubber bag 32 and the three second inflatable rubber bags together form a square structure. The simulated rock and soil sample is located in the square structure, and the simulated rock and soil sample is processed by different compaction methods to form a rock and soil layer. In order to facilitate the application of confining pressure to the simulated rock and soil sample, an inflation hole 313 is opened on one of the steel plates 311, and an opening 321 is opened on the side corresponding to the first inflatable rubber bag 32 attached. At the same time, the sides of the first inflatable rubber bag 32 and the three second inflatable rubber bags are each provided with a flow hole 322 that matches a corresponding tubular vent 314, so that the gas entering from the inflation hole 313 passes through the opening 321, the flow hole 322, and the tubular vent 314 to fill the first inflatable rubber bag 32 and the three second inflatable rubber bags.

[0037] In some possible embodiments, the vacuum base 11 includes: a frame bottom plate 111, the top surface of the frame bottom plate 111 is provided with four first grooves, the frame bottom plate 111 is fixedly connected to one end of the hollow transparent cover 12 through a first sealing ring 114; four columns 112 are arranged corresponding to the four first grooves, one end of the column 112 is fixedly connected to the frame bottom plate 111 through a corresponding first groove, and the other end of the column 112 is fixedly connected to the vacuum top plate 13; a plurality of guide wheels 113, each of the guide wheels 113 is provided on one side of the column 112, for contacting the inner wall of the hollow transparent cover 12.

[0038] In the present application, the vacuum base 11 includes a frame base plate 111, four columns 112 and a plurality of guide wheels 113. Four first grooves are provided on the frame base plate 111 to fix the four columns 112. At the same time, a plurality of guide wheels 113 are provided on one side of the four columns 112 to keep the plurality of sample loading assemblies 3 stacked in sequence on the same vertical plane, so as to facilitate subsequent sampling and monitoring of drilling equipment.

[0039] In some possible embodiments, the hollow transparent cover 12 includes several vacuum transparent outer cylinders 121, and each of the vacuum transparent outer cylinders 121 has several ventilation holes 122 on its side wall; several vacuum transparent outer cylinders 121 are stacked in sequence to a preset height, and the outer sides of two adjacent vacuum transparent outer cylinders 121 are provided with flanges 123 and fixedly connected by bolts 124; wherein, the vacuum transparent outer cylinder 121 of the bottom layer is fixedly connected to the frame bottom plate 111 through a first sealing ring 114, and the vacuum transparent outer cylinder 121 of the top layer is fixedly connected to the vacuum top plate 13 through a second sealing ring 132.

[0040] Those skilled in the art will understand that in order to facilitate the installation of the test platform, the hollow transparent cover 12 can be composed of several vacuum transparent outer cylinders 121 stacked in sequence, and the vacuum transparent outer cylinders 121 can be maintained on the same vertical plane by the guide wheel 113 on the column 112, thereby improving the sealing of the connection between the two adjacent vacuum transparent outer cylinders 121; a flange 123 is sleeved on the outer side of the two adjacent vacuum transparent outer cylinders 121, which are fixedly connected by bolts 124, and a fluororubber sealing ring is provided at the interface, the vacuum transparent outer cylinder 121 of the bottom layer is fixedly connected to the frame bottom plate 111 by the first sealing ring 114, and the vacuum transparent outer cylinder 121 of the top layer is fixedly connected to the vacuum top plate 13 by the second sealing ring 132, and vacuum sealing grease is applied at the connection to further improve the vacuum sealing of the test platform.

[0041] In some possible embodiments, the vacuum top plate 13 includes: a frame top plate 131, the bottom surface of the frame top plate 131 is provided with a second groove adapted to the column 112, and the other end of the column 112 is fixedly connected to the frame top plate 131 through a corresponding second groove; a plurality of vacuum extraction holes 134 are provided at the edge of the frame top plate 131; a sealing column 133, the sealing column 133 is provided through the center of the frame top plate 131, and a loading hole 135 is provided in the center of the sealing column 133 for arranging a drill rod 136; wherein, the frame top plate 131 is fixedly connected to the vacuum transparent outer cylinder 121 of the top layer through a second sealing ring 132.

[0042] This is because the vacuum top plate 13 includes a frame top plate 131 and a sealing column 133. Four second grooves are provided on the bottom surface of the frame top plate 131 to fix four columns 112, that is, the center of the vacuum top plate 13 and the center of the vacuum base 11 can be placed on the same vertical line through the columns 112; a number of vacuum exhaust holes 134 are provided at the edge of the frame top plate 131 to extract the air between the inner wall of the vacuum transparent outer cylinder 121 and the outside of the sample loading assembly 3, so that the simulated rock and soil sample inside the sample loading assembly 3 is in a vacuum environment. At the same time, a sealing column 133 is provided through the center of the frame top plate 131, and a loading hole 135 is opened in the center of the sealing column 133, so that the drill rod 136 can be extended into the simulated rock and soil sample through the loading hole 135 to monitor the drilling data during the sampling process.

[0043] For some possible implementations, see Figure 5The first temperature control component 21 includes: a lower temperature control plate 211, the lower temperature control plate 211 is fixedly arranged between the bottom square soil box 31 and the frame bottom plate 111, a first liquid nitrogen circulation hole 216 is provided on one side of the lower temperature control plate 211, a first electromagnetic heating wire hole 217 is provided on the other side of the lower temperature control plate 211, and a first temperature sensor is provided inside the lower temperature control plate 211; a plurality of first electromagnetic heating plates 212, a plurality of the first electromagnetic heating plates 212 are arranged on the lower temperature control plate 211 at intervals, and a plurality of the first electromagnetic heating plates 212 are arranged in series through wires; a first liquid nitrogen refrigeration circulation pipe 213, the first liquid nitrogen refrigeration circulation pipe 213 is embedded in the lower temperature control plate The interior of the plate 211; a first vacuum liquid nitrogen circulation pipe 214, one end of the first vacuum liquid nitrogen circulation pipe 214 is fixedly connected to the first liquid nitrogen circulation hole 216, the other end of the first vacuum liquid nitrogen circulation pipe 214 passes through the first sealing ring 114 and is connected to the external liquid nitrogen circulation pipe, and one end of the first vacuum liquid nitrogen circulation pipe 214 is provided with a first pressure sensor; a first electromagnetic heating wire pipe 215, one end of the first electromagnetic heating wire pipe 215 is fixedly connected to the first electromagnetic heating wire hole 217, the other end of the first electromagnetic heating wire pipe 215 passes through the first sealing ring 114, so that the wire in the first electromagnetic heating wire pipe 215 is connected to the external power supply.

[0044] In the present application, the first temperature control assembly 21 includes a lower temperature control plate 211, a plurality of first electromagnetic heating plates 212, a first liquid nitrogen refrigeration circulation pipe 213, a first vacuum liquid nitrogen conveying circulation pipe 214 and a first electromagnetic heating wire pipe 215. The length and width of the lower temperature control plate 211 are the same as those of the square soil box 31, and the four columns 112 are located at four right angles on the outside of the square soil box 31, so that the center of the lower temperature control plate 211 coincides with the center of the square soil box 31 at the bottom; two first liquid nitrogen circulation holes 216 are provided on one side of the lower temperature control plate 211, one of which is used to transport liquid nitrogen to the first liquid nitrogen refrigeration circulation pipe 213, and the other first liquid nitrogen circulation hole 216 is used to transport liquid nitrogen from Liquid nitrogen is output from the first liquid nitrogen refrigeration circulation pipe 213, thereby achieving an ultra-low temperature environment; two first electromagnetic heating wire holes 217 are set on the other side of the lower temperature control plate 211, so that several first electromagnetic heating plates 212 connected in series through wires can be connected to an external power supply to achieve an ultra-high temperature environment. The first liquid nitrogen refrigeration circulation pipe 213 and the several first electromagnetic heating plates 212 are all arranged inside the lower temperature control plate 211 and are independent of each other; in addition, a first temperature sensor is set in the lower temperature control plate 211 to monitor the temperature in the test platform, and a first pressure sensor is set at one end of the first vacuum liquid nitrogen circulation pipe 214 near the first liquid nitrogen circulation hole 216 to monitor the pressure there, thereby adjusting the liquid nitrogen flow rate.

[0045] For some possible implementations, see Figure 6 , the second temperature control component 22 includes: an upper temperature control plate 221, a through hole 228 matching the size of the sealing column 133 is opened in the center of the upper temperature control plate 221, the upper temperature control plate 221 is fixedly arranged between the square soil box 31 on the top layer and the frame top plate 131, a second liquid nitrogen circulation hole 226 is provided on one side of the upper temperature control plate 221, a second electromagnetic heating wire hole 227 is provided on the other side of the upper temperature control plate 221, and a second temperature sensor is provided inside the upper temperature control plate 221; a plurality of second electromagnetic heating plates 222, a plurality of second electromagnetic heating plates 222 are arranged at intervals on the bottom surface of the upper temperature control plate 221, and a plurality of second electromagnetic heating plates 222 are arranged in series through wires; a second liquid nitrogen refrigeration circulation pipe 223, the first Two liquid nitrogen refrigeration circulation pipes 223 are embedded in the interior of the upper temperature control plate 221; a second vacuum liquid nitrogen circulation pipe 224, one end of the second vacuum liquid nitrogen circulation pipe 224 is fixedly connected to the second liquid nitrogen circulation hole 226, and the other end of the second vacuum liquid nitrogen circulation pipe 224 is connected to the external liquid nitrogen circulation pipe through the second sealing ring 132, and a second pressure sensor is provided at one end of the second vacuum liquid nitrogen circulation pipe 224; a second electromagnetic heating wire pipe 225, one end of the second electromagnetic heating wire pipe 225 is fixedly connected to the second electromagnetic heating wire hole 227, and the other end of the second electromagnetic heating wire pipe 225 passes through the second sealing ring 132, so that the wire in the second electromagnetic heating wire pipe 225 is connected to the external power supply.

[0046] In the present application, the second temperature control component 22 is arranged in a similar manner to the first temperature control component 21, except that the second temperature control component 22 is arranged between the top square soil box 31 and the frame top plate 131. Therefore, a through hole 228 matching the size of the sealing column 133 needs to be opened in the center of the upper temperature control plate 221 so that the drill rod 136 can pass through and extend into the simulated rock and soil sample.

[0047] In some possible embodiments, the extreme temperature loading device 2 further includes a PID controller, which is communicatively connected to the first temperature sensor, the second temperature sensor, the second pressure sensor, and the second pressure sensor, and is used to adjust the liquid nitrogen flow rate and the electromagnetic heating power.

[0048] Those skilled in the art will understand that the extreme temperature loading device 2 also includes a PID controller, which monitors the temperature signal of the test platform through the first temperature sensor and the second temperature sensor, and transmits the temperature signal to the PID controller. After the PID operation, the output signal is used to adjust the electromagnetic heating power; the pressure signal is monitored through the first pressure sensor and the second pressure sensor, and the pressure signal is transmitted to the PID controller. After the PID operation, the output signal is used to control the electric regulating valve to adjust the liquid nitrogen flow rate.

[0049] Example 2

[0050] The present invention provides a method for constructing a test platform for deep sedimentary rock and soil layers in extreme environments. The method includes: installing a vacuum base 11 and a first temperature control component 21; installing a hollow transparent cover 12 and a sample loading component 3, and filling the sample loading component 3 with corresponding simulated rock and soil samples to prepare simulated formation samples; installing a second temperature control component 22 and a vacuum top plate 13; installing an inflation tube 4, and debugging it to conform to the sedimentary state of deep rock and soil layers on the surface of an extraterrestrial planet.

[0051] In some possible embodiments, the installation of the hollow transparent cover 12 and the sample loading assembly 3 includes: attaching the first inflatable rubber bag 32 and the three second inflatable rubber bags to the inner wall of the square soil box 31 so that the tubular vent 314 and the flow air hole 322 are aligned; filling the space formed by the first inflatable rubber bag 32 and the three second inflatable rubber bags with corresponding simulated rock and soil samples in layers, and compacting them layer by layer to the target density through an electric compactor; and stacking the sample loading assembly 3 filled with the simulated rock and soil samples and the vacuum transparent outer cylinder 121 to the target height in sequence through a hydraulic lifting device.

[0052] Specifically, the present invention provides a method for building a test platform for deep sedimentary rock and soil layers in extreme environments, comprising the following steps: first, installing a vacuum base 11 and a first temperature control component 21, fixing the frame bottom plate 111 in the vacuum base 11 on the foundation of the laboratory, fixing two adjacent columns 112 in corresponding first grooves, and fixing the lower temperature control plate 211 on the frame bottom plate 111, positioning the lower temperature control plate 211 by the columns 112 so that the center of the lower temperature control plate 211 coincides with the center of the frame bottom plate 111; secondly, installing a hollow transparent cover 12 and a sample loading component 3, attaching the first inflatable rubber bag 32 and the three second inflatable rubber bags to the inner wall of the square soil box 31, so that the tubular vent 314 and the flow vent 322 are aligned, and filling the space enclosed by the first inflatable rubber bag 32 and the three second inflatable rubber bags with corresponding simulated rock and soil samples in layers to simulate the real rock and soil layer state, and then, by a hydraulic lifting device The sample loading assembly 3 filled with simulated rock and soil samples and the vacuum transparent outer cylinder 121 are stacked in sequence to the target height, and are positioned and guided by the columns 112 and the guide wheels 113; then, the second temperature control assembly 22 is installed on the sample loading assembly 3 on the top layer, and the remaining two columns 112 are fixed in the corresponding first grooves, and then the vacuum top plate 13 is conveniently installed, so that the four columns 112 are also fixed in the corresponding second grooves. Furthermore, the two adjacent vacuum transparent outer cylinders 121 are fixedly connected by flanges 123 and bolts 124, and a fluororubber sealing ring is provided at the interface; finally, the inflation tube 4, the first vacuum liquid nitrogen circulation tube 214, the first electromagnetic heating conduit 215, the second vacuum liquid nitrogen circulation tube 224 and the second electromagnetic heating conduit 225 are installed and sealed, and debugged to meet the sedimentary state of the deep rock and soil layer on the surface of the extraterrestrial planet, so as to carry out drilling tests and verify the feasibility of deep drilling technology.

[0053] It should be noted that, since the second embodiment and the first embodiment are embodiments of the same inventive concept, some of their structures are exactly the same, so the structures in the second embodiment that are essentially the same as those in the first embodiment will not be elaborated on in detail. For the parts not described in detail, please refer to the first embodiment.

[0054] Example 3

[0055] This example uses the simulated lunar rock and soil layer as an example to provide a method for building a test platform for deep sedimentary rock and soil layers in extreme environments.

[0056] Materials preparation:

[0057] Vacuum base 11: It consists of an aluminum alloy frame base plate 111 (1200mm diameter, 30mm thickness) and four stainless steel columns 112 (5.09m height). The surface of the frame base plate 111 is provided with four first grooves for fixing the columns 112. Metal guide wheels 113 are installed on the sides of the columns to ensure that the outer cylinders are stacked vertically.

[0058] Vacuum transparent outer cylinder 121: Made of high-strength organic glass (PMMA), with an outer diameter of 1200 mm and a height of 1000 mm (single layer), stacked in layers to a total height of 5 m; a vent hole 122 (16 mm in diameter) is provided on the side wall of each vacuum transparent outer cylinder 121 for connecting to the inflation tube 4; two adjacent vacuum transparent outer cylinders 121 are connected by flanges 123 and bolts 124, and a fluororubber sealing ring is provided at the interface;

[0059] Vacuum top plate 13: A 30mm thick stainless steel frame top plate 131 with a centrally located sealing column 133 (200mm diameter, 200mm height). A loading hole 135 (30mm diameter) is provided in the center of the sealing column 133 for drilling equipment to penetrate. Two vacuum extraction holes 134 (20mm diameter) are evenly distributed along the edge of the frame top plate 131 for connecting to a vacuum pump (with a pumping rate of 5L / s). Four second grooves are provided below the frame top plate 131 for securing the columns 112.

[0060] First sealing ring 114: made of 40mm thick fluororubber, with a first liquid nitrogen circulation hole 216 and a first electromagnetic heating wire hole 217 on both sides, each with a diameter of 20mm;

[0061] Second sealing ring 132: made of 40mm thick fluororubber, with a second liquid nitrogen circulation hole 226 and a second electromagnetic heating wire hole 227 with a diameter of 20mm on both sides;

[0062] Lower / upper temperature control plate: A copper plate measuring 580mm × 580mm × 40mm, embedded with the first / second liquid nitrogen refrigeration circulation tube (16mm wide, 26mm high, 2mm thick, 8mm corner radius) and the first / second electromagnetic heating guide plate (500W power / piece). The first / second liquid nitrogen refrigeration circulation tube is connected to the liquid nitrogen storage tank (capacity 50L, working pressure 0.5MPa) through the first / second vacuum liquid nitrogen transmission circulation tube (double-layer vacuum insulation tube).

[0063] The first / second temperature sensors (PT100 type) are embedded in the lower / upper temperature control board. The PID controller (model: OMRONE5CN) adjusts the liquid nitrogen flow (through the electric regulating valve) and electromagnetic heating power according to the feedback from the pressure sensor and temperature sensor, achieving a temperature control range of -196°C to +300°C with an accuracy of ±1°C.

[0064] Square soil box 31: Dimensions: 580 mm × 580 mm × 200 mm (single layer), made of 304 stainless steel, with a tubular vent 314 (8 mm diameter) on the inner wall; an inflation hole 313 (10 mm diameter) is provided on one side of the square soil box 31, which is connected to an external air pump (maximum pressure 1 MPa) via an inflation tube 4 (pressure-resistant rubber tube);

[0065] Inflatable rubber bladder: Made of 1.5mm thick nitrile rubber, it is attached to the inner wall of the soil box and has a side air hole (8mm diameter) aligned with the tubular air hole in the square soil box to ensure uniform application of confining pressure (range 0-500kPa) after inflation. The first inflatable rubber bladder has an opening at the contact point with the inflation hole to allow external air to flow into the first inflatable rubber bladder and the three second inflatable rubber bladders.

[0066] The construction method specifically includes the following steps:

[0067] (1) Install the vacuum base 11 and the lower temperature control plate 211:

[0068] Fix the frame base plate 111 to the laboratory foundation and adjust the horizontal error to ≤0.1mm / m; fix the two adjacent columns 112 in the corresponding first grooves and fix them with bolts; place the lower temperature control plate 211 on the frame base plate 111, and use the columns 112 to ensure that the center of the lower temperature control plate 211 coincides with the center of the frame base plate 111.

[0069] (2) Prepare a sample loading assembly 3 using a square soil box 31 and an inflatable rubber bag to simulate a formation sample:

[0070] Attach the first inflatable rubber bladder 32 and three second inflatable rubber bladders to the inner wall of the square soil box 31. An opening 321 is formed where the first inflatable rubber bladder 32 contacts the inflation hole 313 in the square soil box 31. Align the air flow holes 322 with the tubular air holes 314 to ensure smooth air flow.

[0071] The simulated rock and soil samples were filled in layers, each layer 20 mm thick, and compacted layer by layer to the target density using an electric compactor (frequency 10 Hz, pressure 200 kPa). The specific parameters of the sedimentary rock and soil layers were set based on existing research results. The main control parameters included mineral composition, rock content, dry density, porosity, particle weathering characteristics, thermal conductivity, and thermal expansion coefficient, as shown in Table 1-2 below:

[0072] Table 1. Lunar sea area stratification parameters (0-5m)

[0073]

[0074]

[0075] Table 2 Lunar highland area layering parameters (0-5m)

[0076]

[0077]

[0078] The implementation method given here is only one working condition that can be simulated by the test platform of this application. Any other combination of parameters may be implemented by this application;

[0079] The compacted sample loading assembly 3 is placed on the lower temperature control plate 211 through a hydraulic lifting device, and the bottom steel plate is pulled out to ensure that the bottom sample loading assembly 3 is in close contact with the lower temperature control plate 211.

[0080] (3) Stacking the sample loading assembly 3 and the vacuum transparent outer cylinder 121 layer by layer:

[0081] Repeat step (2) until the total height of all stacked sample loading assemblies 3 is 5000 mm;

[0082] A first sealing ring 114 is provided between the vacuum transparent outer cylinder 121 of the bottom layer and the vacuum base 11. The first sealing ring 114 reserves a first liquid nitrogen circulation hole 216 and a first electromagnetic heating wire hole 217.

[0083] The vacuum transparent outer cylinders 121 are installed layer by layer through the guide wheel 113. Two adjacent vacuum transparent outer cylinders 121 are connected by flanges 123 and bolts 124. Fluororubber sealing rings are set at the interfaces and vacuum sealing grease is applied.

[0084] (4) Install the temperature control plate 221 and the vacuum top plate 13

[0085] Place the upper temperature control plate 221 on the top sample loading assembly 3, install the remaining two columns 112 and fix them in the corresponding first and second grooves;

[0086] The vacuum top plate 13 is fixedly mounted on the upper temperature control plate 221 , wherein a second sealing ring 132 is provided between the top vacuum transparent outer cylinder 121 and the vacuum top plate 13 , and the second sealing ring 132 reserves a second liquid nitrogen circulation hole 226 and a second electromagnetic heating wire hole 227 .

[0087] (5) Test platform debugging and startup:

[0088] One end of the first vacuum liquid nitrogen conveying circulation pipe 214 passes through the first sealing ring 114 and is fixedly connected to the first liquid nitrogen circulation hole 216, and the other end is connected to the external liquid nitrogen circulation tank; one end of the first electromagnetic heating wire pipe 215 passes through the first sealing ring 114 and is fixedly connected to the first electromagnetic heating wire hole 217, and the other end is connected to the outside for protecting the wire from being connected to the external power supply; one end of the second vacuum liquid nitrogen conveying circulation pipe 224 passes through the second sealing ring 132 and is fixedly connected to the second liquid nitrogen circulation hole 226, and the other end is connected to the external liquid nitrogen circulation tank; one end of the second electromagnetic heating wire pipe 225 passes through the second sealing ring 132 and is fixedly connected to the second electromagnetic heating wire hole 227, and the other end is connected to the outside for protecting the wire from being connected to the external power supply;

[0089] Connect the vacuum pump through the vacuum extraction hole 134 and the air pump through the inflation tube 4;

[0090] Start the vacuum pump to make the vacuum degree in the hollow transparent cover 12 ≤ 10 -3 Pa;

[0091] Set the target temperature (e.g., -180°C) through the PID controller, turn on the liquid nitrogen circulation tank and the external power supply to start the first / second electromagnetic heating plate. After the temperature stabilizes, start the air pump to apply confining pressure (e.g., 200 kPa) to the rock and soil layer in the sample loading assembly;

[0092] The drilling equipment (drilling speed 10 mm / s) is inserted through the loading hole in the vacuum roof, the drilling resistance and rock and soil deformation are monitored in real time, and the drilling equipment is optimized according to the drilling results.

[0093] Finally, it should be noted that the above embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that any person skilled in the art can modify or easily conceive of changes to the technical solutions described in the above embodiments within the technical scope disclosed by the present invention, or replace some of the technical features therein with equivalents. However, these modifications, changes, or replacements do not deviate from the essence of the corresponding technical solutions within the scope of the technical solutions of the embodiments of the present invention. They should all be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

[0094] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the description and implementation methods. They can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A deep sedimentary rock and soil layer test platform in extreme environments, characterized by: The test platform includes: The vacuum simulation device comprises a vacuum base, a hollow transparent cover and a vacuum top plate; one end of the hollow transparent cover is fixed to the vacuum base, and the other end of the hollow transparent cover is fixed to the vacuum top plate; a plurality of ventilation holes are opened on the side wall of the hollow transparent cover; An extreme temperature loading device, comprising a first temperature control component and a second temperature control component, wherein the first temperature control component is fixed to the top surface of the vacuum base, and the second temperature control component is fixed to the bottom surface of the vacuum top plate, and both the first temperature control component and the second temperature control component are located within the hollow transparent cover; A plurality of sample loading assemblies, wherein the plurality of sample loading assemblies are sequentially stacked between the first temperature control assembly and the second temperature control assembly; each of the sample loading assemblies is filled with a corresponding simulated rock and soil sample, and an air filling hole is opened on one side of each of the sample loading assemblies; A plurality of inflation tubes, one end of each of the inflation tubes passes through a corresponding vent hole and is fixedly connected to a corresponding inflation hole, and the other end of each inflation tube is connected to an external air pump for applying confining pressure to the simulated rock and soil sample.

2. The extreme environment deep sedimentary rock and soil layer test platform according to claim 1 is characterized in that: Each of the sample loading assemblies comprises: The square soil box is formed by connecting four steel plates vertically end to end, and two adjacent steel plates are connected by bosses. One of the steel plates is provided with an inflation hole for connecting a corresponding inflation tube; each boss is provided with a tubular vent hole. a first inflatable rubber bladder, the first inflatable rubber bladder being attached to the inner wall of one of the steel plates and having an opening adapted to the inflation hole, and a side edge of the first inflatable rubber bladder being provided with a flow hole adapted to the tubular vent hole; Three second inflatable rubber bags, each of which has a flow hole adapted to the tubular vent on its side, and each second inflatable rubber bag is attached to the inner wall of a corresponding steel plate; The simulated rock and soil sample is located in a space formed by the first inflatable rubber bag and three second inflatable rubber bags; the bottom square soil box is arranged above the first temperature control component, and the top square soil box is arranged below the second temperature control component.

3. The extreme environment deep sedimentary rock and soil layer test platform according to claim 2 is characterized in that: The vacuum base comprises: A frame bottom plate, wherein the top surface of the frame bottom plate is provided with four first grooves, and the frame bottom plate is fixedly connected to one end of the hollow transparent cover via a first sealing ring; Four columns are provided corresponding to the four first grooves, one end of each column is fixedly connected to the frame bottom plate through a corresponding first groove, and the other end of each column is fixedly connected to the vacuum top plate; A plurality of guide wheels are provided, each of which is arranged on one side of the column and is used for contacting the inner wall of the hollow transparent cover.

4. The extreme environment deep sedimentary rock and soil layer test platform according to claim 3 is characterized in that: The hollow transparent cover includes a plurality of vacuum transparent outer cylinders, each of which has a plurality of ventilation holes on its side wall; the plurality of vacuum transparent outer cylinders are stacked in sequence to a preset height, and the outer sides of two adjacent vacuum transparent outer cylinders are provided with flanges and fixedly connected by bolts; The bottom vacuum transparent outer cylinder is fixedly connected to the frame bottom plate via a first sealing ring, and the top vacuum transparent outer cylinder is fixedly connected to the vacuum top plate via a second sealing ring.

5. The extreme environment deep sedimentary rock and soil layer test platform according to claim 4 is characterized in that: The vacuum top plate comprises: A frame top plate, wherein the bottom surface of the frame top plate is provided with a second groove adapted to the column, and the other end of the column is fixedly connected to the frame top plate through a corresponding second groove; a plurality of vacuum extraction holes are provided at the edge of the frame top plate; A sealing column is provided through the center of the frame top plate, and a loading hole is provided in the center of the sealing column for arranging a drill rod; Wherein, the frame top plate is fixedly connected to the vacuum transparent outer cylinder of the top layer through a second sealing ring.

6. The extreme environment deep sedimentary rock and soil layer test platform according to claim 5 is characterized in that: The first temperature control component includes: A lower temperature control plate, the lower temperature control plate being fixedly disposed between the bottom square soil box and the frame bottom plate, a first liquid nitrogen circulation hole being disposed on one side of the lower temperature control plate, a first electromagnetic heating wire hole being disposed on the other side of the lower temperature control plate, and a first temperature sensor being disposed inside the lower temperature control plate; a plurality of first electromagnetic heating plates, wherein the plurality of first electromagnetic heating plates are arranged at intervals on the lower temperature control plate, and the plurality of first electromagnetic heating plates are arranged in series via wires; a first liquid nitrogen refrigeration circulation pipe, wherein the first liquid nitrogen refrigeration circulation pipe is embedded in the interior of the lower temperature control plate; a first vacuum liquid nitrogen circulation pipe, one end of which is fixedly connected to the first liquid nitrogen circulation hole, the other end of which is connected to an external liquid nitrogen circulation pipe through the first sealing ring, and a first pressure sensor is provided at one end of the first vacuum liquid nitrogen circulation pipe; A first electromagnetic heating wire tube, one end of the first electromagnetic heating wire tube is fixedly connected to the first electromagnetic heating wire hole, and the other end of the first electromagnetic heating wire tube passes through the first sealing ring, so that the wire in the first electromagnetic heating wire tube is connected to the external power supply.

7. The extreme environment deep sedimentary rock and soil layer test platform according to claim 6 is characterized in that: The second temperature control component includes: An upper temperature control plate, wherein a through hole matching the size of the sealing column is opened in the center of the upper temperature control plate, the upper temperature control plate is fixedly arranged between the square soil box on the top layer and the frame top plate, a second liquid nitrogen circulation hole is provided on one side of the upper temperature control plate, a second electromagnetic heating wire hole is provided on the other side of the upper temperature control plate, and a second temperature sensor is provided inside the upper temperature control plate; a plurality of second electromagnetic heating plates, wherein the plurality of second electromagnetic heating plates are arranged at intervals on the bottom surface of the upper temperature control plate, and the plurality of second electromagnetic heating plates are arranged in series via wires; a second liquid nitrogen refrigeration circulation pipe, wherein the second liquid nitrogen refrigeration circulation pipe is embedded in the interior of the upper temperature control plate; a second vacuum liquid nitrogen circulation pipe, one end of which is fixedly connected to the second liquid nitrogen circulation hole, the other end of which is connected to the external liquid nitrogen circulation pipe through the second sealing ring, and one end of which is provided with a second pressure sensor; A second electromagnetic heating wire tube, one end of the second electromagnetic heating wire tube is fixedly connected to the second electromagnetic heating wire hole, and the other end of the second electromagnetic heating wire tube passes through the second sealing ring, so that the wire in the second electromagnetic heating wire tube is connected to the external power supply.

8. The extreme environment deep sedimentary rock and soil layer test platform according to claim 7 is characterized in that: The extreme temperature loading device further includes a PID controller, which is communicatively connected to the first temperature sensor, the second temperature sensor, the second pressure sensor, and the second pressure sensor, and is used to adjust the liquid nitrogen flow rate and the electromagnetic heating power.

9. A method for constructing an extreme environment deep sedimentary rock and soil layer test platform according to any one of claims 1 to 8, characterized in that: The construction method includes: Install the vacuum base and the first temperature control assembly; Installing a hollow transparent cover and a sample loading assembly, and filling the sample loading assembly with a corresponding simulated rock and soil sample to prepare a simulated formation sample; Install the second temperature control assembly and vacuum top plate; The inflation tube is installed and debugged to match the sedimentary state of the deep rock and soil layer on the surface of the extraterrestrial planet.

10. The method for constructing an extreme environment deep sedimentary rock and soil layer test platform according to claim 9, characterized in that: The installation of the hollow transparent cover and the sample loading assembly includes: Attach the first inflatable rubber bladder and three second inflatable rubber bladders to the inner wall of the square soil box so that the tubular vent holes and the flow holes are aligned; The space formed by the first inflatable rubber bag and the three second inflatable rubber bags is filled with corresponding simulated rock and soil samples in layers, and compacted layer by layer to the target density using an electric compactor; The sample loading assembly filled with simulated rock and soil samples and the vacuum transparent outer cylinder are stacked in sequence to the target height through a hydraulic lifting device.

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