CN114348304A - Retaining wall, equipment and method for lunar-based continuous coring - Google Patents
Retaining wall, equipment and method for lunar-based continuous coring Download PDFInfo
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- CN114348304A CN114348304A CN202111594183.0A CN202111594183A CN114348304A CN 114348304 A CN114348304 A CN 114348304A CN 202111594183 A CN202111594183 A CN 202111594183A CN 114348304 A CN114348304 A CN 114348304A
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Abstract
The invention discloses a retaining wall, equipment and a method for monthly-based continuous coring, wherein the retaining wall for monthly-based continuous coring comprises the following components: the wall protection sleeves are sleeved from inside to outside in sequence; and the fastening mechanism is arranged at the lower end of the wall protection sleeve and is used for being fixedly connected with the upper end of the other wall protection sleeve positioned at the inner side. After the wall protection sleeves are sleeved, when a lunar soil layer with large depth is sampled, the wall protection sleeves are spliced to protect the hole wall formed by the drilled hole, so that the hole wall is not easy to collapse. The protective wall is simple to use, can be combined with a control system to realize remote control, adopts a section-by-section splicing mode, and saves space; the structure is simple to use, the number of parts is small, the total weight can be controlled, the carrying load can be greatly reduced under the condition of ensuring the completion of the deep hole wall protection of the moon, and a foundation is laid for the physical and chemical property research of the lunar rock and the mineral resource exploration.
Description
Technical Field
The invention relates to the technical field of lunar exploration application, in particular to a retaining wall, equipment and a method for lunar-based continuous coring.
Background
The moon is rich in resources and is an ideal place for solving the energy crisis of the earth. The lunar coring provides a basis for exploration and evaluation of lunar resources, and not only can obtain core or powder samples which are stored for millions of years, but also can provide experimental samples for heat flow probes, neutron energy spectrometers and other in-situ scientific instruments. Therefore, the lunar soil collection has great strategic significance.
However, the prior coring still has technical barriers, and particularly has the problems of hole wall stability in loose lunar soil environment and the like, which need to be overcome urgently. The lunar exploration plan coring of various countries hardly breaks through a lunar surface soil layer, a real lunar sample cannot be obtained, particularly a lunar deep rock sample, for example, after Apollo15 drills to 150cm, the torque is increased sharply, Apollo16 has no sample in a section of 72-80 cm, and the deepest sampling Apollo17 moon base coring is 3.05m deepest. One of the main reasons for this is the problem of pore wall stability. Whereas the next round of american lunar exploration projects that NASA is conceiving of implementation will achieve 10 meters deep lunar-based drilling. The advanced lunar base dado technology is an important technical guarantee for ensuring the development of lunar resources and the construction of a lunar base in China. The retaining wall is a technical means for repairing drilled holes, isolating leakage, preventing diameter shrinkage, crushing, block falling, collapse and the like by a certain method. The conventional wall protection technology such as mud wall protection adopts mud as flushing fluid, and a thin mud skin is formed on the hole wall of a drilling hole in the drilling process, so that the water in the flushing fluid is prevented from continuously permeating the hole wall of the drilling hole to cause the expansion or collapse of a stratum.
But the available resources are extremely deficient aiming at the special environment of the moon, when the existing mud retaining wall is used on the moon base, the loose soil is difficult to provide constant pump pressure and raw materials, and therefore, the existing retaining wall technology cannot be used for the moon base coring.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
In view of the above-mentioned deficiencies of the prior art, it is an object of the present invention to provide a retaining wall, an apparatus and a method for month-based continuous coring that solve the problem of the prior art that the retaining wall technique cannot be used in month-based coring.
The technical scheme of the invention is as follows:
a retaining wall for monthly-based continuous coring, comprising: the wall protection sleeves are sleeved from inside to outside in sequence;
and the fastening mechanism is arranged at the lower end of the wall protection sleeve and is used for being fixedly connected with the upper end of the other wall protection sleeve positioned at the inner side.
Furthermore, the inner wall of the lower part of the wall protection sleeve is provided with an installation groove and a pressing hole which penetrates through the inner wall of the wall protection sleeve, and the pressing hole is communicated with the installation groove;
the fastening mechanism includes: the pressing block is movably arranged in the pressing hole, and part of the pressing block protrudes out of the opening on the outer side of the pressing hole;
the hinge rod is hinged on the wall of the mounting groove, and one end of the hinge rod is movably connected to the pressing block;
the movable part of the fastening part protrudes out of the inner opening of the mounting groove and can be arranged in a sliding manner along the radial direction, and the other end of the hinged rod is movably connected with the fastening part;
the fastening portion is connected to elastic component, elastic component one end, and the other end is connected on the inner wall of mounting groove towards the outside.
Furthermore, the side surface of the fastening part facing inwards is provided with an inclined surface, and the inclined surface is gradually arranged near the central axis in an extending manner along the direction from top to bottom;
the side surface of the fastening part facing outwards is provided with a guide post, the inner wall of the mounting groove facing outwards is provided with a guide hole, and the guide post is embedded in the guide hole;
the elastic part is a spring which is sleeved on the guide post.
Furthermore, a first strip-shaped groove is formed in the upper end of the hinge rod, a first connecting column is arranged on the pressing block, and the first connecting column is located in the first strip-shaped groove and slides;
a second strip-shaped groove is formed in the lower end of the hinge rod, a second connecting column is arranged on the fastening portion, and the second connecting column is located in the second strip-shaped groove and slides.
Furthermore, two fastening mechanisms are arranged, and the two fastening mechanisms are arranged in mirror symmetry relative to the central axis.
Furthermore, an external thread is arranged on the outer wall of the wall protection sleeve.
Based on the same concept, the invention also provides equipment for the month-based continuous coring, wherein the equipment comprises the retaining wall for the month-based continuous coring;
the landing shoulder is positioned in the wall protection sleeve and is used for fixing the position of the lunar-based core drilling machine in the wall protection sleeve through lateral expansion; and
and the mechanical arm is used for taking and placing the lunar-based coring drilling machine and the wall protection sleeve.
Further, the equipment for month-based continuous coring further comprises: the sleeve frame is provided with a plurality of positioning holes, and the positioning holes correspondingly accommodate a plurality of retaining walls for continuous coring of the moon-based.
Based on the same concept, the invention also proposes a method for month-based continuous coring, wherein the equipment for month-based continuous coring as above comprises the following steps:
the wall protection sleeve and the lunar-based core drilling machine are put down to a preset position together;
the shoulder is expanded, and the top of the moon-based core drilling machine is fixed on the inner wall of the retaining wall sleeve;
starting the lunar-based core drilling machine to enable the drilling tool to rotate clockwise, and stopping rotating until the drilling tool reaches a preset condition;
the landing shoulder is cancelled, the fisher is lowered, the lunar-based core drilling machine and the rock sample taken by the sampler are pulled out through the connecting device of the fisher, and the first protective wall sleeve is reserved to maintain the stability of the drilled hole;
starting the mechanical arm, and lifting the lunar-based coring drilling machine to a lunar surface;
the manipulator takes the other protective wall sleeve and the other sampler;
another wall protection sleeve is sleeved in the previous wall protection sleeve and is lowered down together with the lunar-based core drilling machine,
and sequentially and circularly executing the step of landing shoulder expansion, fixing the top of the monthly-based coring drilling machine on the inner wall of the retaining wall sleeve, and the step of sleeving the other retaining wall sleeve in the last retaining wall sleeve and putting down the retaining wall sleeve and the monthly-based coring drilling machine together until the expected sampling depth is reached.
Further, after the step of lowering the retaining sleeve to a predetermined position with the lunar-based core drill, the method further comprises the steps of:
the wall protection sleeve and the lunar-based core drilling machine move up and down for a plurality of times through the mechanical arm;
in the step of starting the lunar-based core drilling machine to enable the drilling tool to rotate clockwise until the drilling tool reaches the preset condition, stopping rotating:
the drilling tool gradually increases the rotating speed to 60r/min in a pumping pressure or electric driving mode;
the preset conditions for stopping the rotation are as follows: the drill cannot continue drilling down or the torque and lift force are reduced to a predetermined threshold.
Has the advantages that: compared with the prior art, the retaining wall, the equipment and the method for continuous coring on the moon base are provided, wherein the retaining wall is sequentially sleeved by the plurality of retaining wall sleeves, the upper end of one retaining wall sleeve sleeved with the retaining wall sleeve is fixed by the fastening mechanism at the lower end of the other retaining wall sleeve, and the two adjacent retaining wall sleeves are connected end to end while the sleeve is formed. After a plurality of retaining wall sleeves are sleeved, when a lunar soil layer with large depth is sampled, the wall of the hole formed by drilling is protected by the spliced retaining wall sleeves, so that the hole wall is not easy to collapse. The protective wall is simple to use, can be combined with a control system to realize remote control, adopts a section-by-section splicing mode, and saves space; the structure is simple to use, the number of parts is small, the total weight can be controlled, the carrying load can be greatly reduced under the condition of ensuring the completion of the deep hole wall protection of the moon, and a foundation is laid for the physical and chemical property research of the lunar rock and the mineral resource exploration. Therefore, the retaining wall for the lunar-based continuous coring limits deformation of a lunar surface soil body, is simple in structure, saves space, is spliced layer by layer, provides guarantee for a drilling machine operation environment, is good in reliability, is suitable for a soil environment of a moon, and solves the problem that a retaining wall technology in the prior art cannot be used for the lunar-based coring.
Drawings
FIG. 1 is a schematic illustration of a retaining sleeve for an embodiment of a retaining wall for month-based continuous coring according to the present invention;
FIG. 2 is a partial cross-sectional view of an embodiment of a retaining wall for month-based continuous coring of the present invention;
FIG. 3 is a schematic view of an embodiment of a retaining wall for monthly-based continuous coring of the present invention in use;
FIG. 4 is a top view of a sleeve holder of an embodiment of an apparatus for month-based continuous coring of the present invention;
FIG. 5 is a schematic diagram of the state of step S100 for a month-based continuous coring method of the present invention;
FIG. 6 is a schematic diagram of the state of step S200 for a month-based continuous coring method of the present invention;
FIG. 7 is a schematic diagram of the states of step S300 and step S400 of a month-based continuous coring method according to the present invention;
FIG. 8 is a state diagram of step S500 for a month-based continuous coring method of the present invention;
fig. 9 is a schematic diagram of the state of step S700 for a month-based continuous coring method of the present invention.
The reference numbers in the figures: 1. a retaining sleeve; 11. an external thread; 12. a clamping groove; 13. mounting grooves; 14. pressing the hole; 101. a retaining sleeve for the inner layer; 102. an outer walled sleeve; 2. a fastening mechanism; 21. a pressing block; 211. a first connecting column; 22. a hinged lever; 221. a first bar-shaped groove; 222. a second strip groove; 23. a fastening section; 231. a second connecting column; 24. an elastic member; 25. a bevel; 26. a guide post; 4. a sleeve frame; 5. a rope; 6. shoulder climbing; 7. a lunar-based coring drilling machine.
Detailed Description
The invention provides a retaining wall, equipment and a method for monthly-based continuous coring, and in order to make the purposes, technical schemes and effects of the invention clearer and clearer, the invention is further described in detail by referring to the attached drawings and taking examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the prior art, the drilling hole is repaired, the leakage is isolated, and the shrinkage, the crushing, the block falling, the collapse and the like are prevented by a wall protection mode. Conventional retaining wall techniques are mud retaining walls and steel casing retaining walls. The mud protecting wall adopts mud as flushing fluid, and a thin mud skin is formed on the hole wall of the drilling hole in the drilling process, so that the water in the flushing fluid is prevented from continuously permeating into the hole wall of the drilling hole to cause the expansion or collapse of the stratum. The steel sleeve protects the wall and seals and separates the broken fractured stratum through the steel sleeve, ensures normal drilling and deepens the drilled hole. But the available resources are extremely deficient aiming at the special environment of the moon, and when the existing mud retaining wall is used on the moon base, the loose soil is difficult to provide constant pump pressure and raw materials, so that the mud retaining wall is not suitable for the moon. The existing steel sleeve is heavy, and when the drilling depth is large, the occupied space of the steel pipe is large, the load is increased for a carrier rocket, and the existing wall protection technology is not suitable for lunar coring.
In order to solve the above problem, as shown in fig. 1, the present embodiment proposes a retaining wall for continuous coring on a lunar surface, for use in a bore hole in the lunar surface, comprising: a plurality of retaining sleeves 1, and a fastening mechanism 2. For the convenience of structural description, the retaining wall sleeve 1 is cylindrical, and a central through hole is formed in the middle of the retaining wall sleeve 1; the central axis direction of the cylindrical retaining wall sleeve 1 is taken as the axial direction, and the direction vertical to the central axis is taken as the radial direction; the retaining sleeve 1 extends axially inward in the direction toward the center axis and outward in the direction away from the center axis. In this embodiment, the plurality of retaining sleeves 1 are sequentially sleeved from inside to outside. The specific number of the retaining sleeves 1 is adaptively configured according to the depth of the drilled hole, for example, when the depth of the drilled hole is shallow, only one retaining sleeve 1 can be adopted; when the drilling depth is deeper, 2, 3 or more retaining wall sleeves 1 can be sequentially sleeved according to the depth until the preset depth is reached. The fastening mechanism 2 is arranged at the lower end of the retaining wall sleeve 1 and is used for fixedly connecting with the upper end of another retaining wall sleeve positioned at the inner side.
As shown in fig. 1, 2, and 3, two adjacent retaining sleeves 1 are taken as an example, one of which is an outer retaining sleeve 102, and the other is an inner retaining sleeve 101. This a dado for continuous coring of moon base's use does: the outer retaining sleeve 102 and the drill bit are first placed into a borehole in the lunar surface (zone a) and the borehole is located in the lunar rock (zone B). The hole wall is protected by the outer wall protection sleeve 102, so that the drill bit can drill smoothly; in the process of the first section of drilling, a rock sample is obtained through the sampler, after the first section of drilling is completed, the drilling machine and the sampler are taken out, the inner-layer retaining wall sleeve 101 and the drilling machine are placed into the outer-layer retaining wall sleeve 102 together, drilling is continued, and the inner-layer retaining wall sleeve 101 descends to the butt joint position of the fastening mechanism 2, so that the lower end of the outermost fastening mechanism 2 is fixed, and the inner-layer retaining wall sleeve 101 and the outer-layer retaining wall sleeve 102 are fixedly sleeved. In the same way, the plurality of retaining wall sleeves 1 are sequentially lowered and spliced from outside to inside. Therefore, the hole depth of the drilled hole is adapted, and the hole wall formed by the drilled hole is protected through the spliced protective wall sleeve 1, so that the hole wall is not easy to collapse.
This a dado for continuous coring of moon base is established through a plurality of dado sleeves 1 cover in proper order, and fixes the upper end of another dado sleeve 1 of establishing with it through the fastening device 2 of the lower extreme of a dado sleeve 1, when forming the cover and establishing, also makes two adjacent dado sleeves 1 form end to end. After a plurality of dado sleeves 1 cup joint like this, when taking a sample to the great moon soil horizon of degree of depth, the dado sleeve 1 through the concatenation protects the pore wall that the drilling formed, makes the difficult collapse of pore wall. The protective wall is simple to use, can be combined with a control system to realize remote control, adopts a section-by-section splicing mode, and saves space; the structure is simple to use, the number of parts is small, the total weight can be controlled, the carrying load can be greatly reduced under the condition of ensuring the completion of the deep hole wall protection of the moon, and a foundation is laid for the physical and chemical property research of the lunar rock and the mineral resource exploration. Therefore, the retaining wall for the lunar-based continuous coring limits deformation of a lunar surface soil body, is simple in structure, saves space, is spliced layer by layer, provides guarantee for a drilling machine operation environment, is good in reliability, is suitable for a soil environment of a moon, and solves the problem that a retaining wall technology in the prior art cannot be used for the lunar-based coring.
The retaining sleeve 1 in this embodiment is a high-strength plastic sleeve, or a plastic expansion sleeve. The high-strength plastic casing or plastic expansion casing has high strength and light weight, can prevent the collapse of a moon surface drill hole, and is convenient for rocket carrying.
As shown in fig. 1 and 2, the outer wall of the retaining wall sleeve 1 in this embodiment is provided with an external thread 11, and the spiral direction of the external thread 11 is the same as the rotation direction of the drilling machine. When putting into dado sleeve 1, can twist into the drilling with dado sleeve 1 is rotatory, need not very big drive power like this just can implant dado sleeve 1 in the drilling, can also increase dado sleeve 1's structural strength through external screw thread 11 in addition, and external screw thread 11 is laminated with the inner wall of drilling, makes dado sleeve 1 fixed also more stable in the drilling, keeps unanimous with the direction of drilling, and the difficult skew of direction in the drilling.
As shown in fig. 1 and 2, an insertion groove 12 is formed in the outer wall of the retaining sleeve 1, the insertion groove 12 surrounds the outer wall of the retaining sleeve 1 in one circle, and the inner retaining sleeve 101 is connected to the outer retaining sleeve 102 by being inserted into the insertion groove 12 of the inner retaining sleeve 101 through the fastening mechanism 2 of the outer retaining sleeve 102.
As shown in fig. 2, the retaining sleeve 1 of the present embodiment has an installation groove 13 formed on the lower inner wall thereof, and a pressing hole 14 penetrating the inner wall of the retaining sleeve 1, wherein the pressing hole 14 communicates with the installation groove 13, so that an installation space for installing the fastening mechanism 2 is formed on the retaining sleeve 1 through the installation groove 13 and the pressing hole 14. The fastening mechanism 2 specifically includes: a pressing block 21, a hinge rod 22, a fastening portion 23, and an elastic member 24. The pressing block 21 is movably arranged in the pressing hole 14, and part of the pressing block protrudes out of the outer opening of the pressing hole 14; the pressing block 21 can be pushed radially inward and outward. The hinge rod 22 is hinged on the wall of the mounting groove 13, and one end of the hinge rod is movably connected on the pressing block 21. The movable part of the fastening part 23 protrudes from the inner opening of the mounting groove 13 and can be arranged in a sliding way along the radial direction, and the other end of the hinged rod 22 is movably connected with the fastening part 23; the elastic member 24 has one end connected to the fastening part 23 and the other end connected to the inner wall of the mounting groove 13 facing outward.
After the retaining sleeve 101 on the inner layer enters the retaining sleeve 102 on the outer layer, the retaining sleeve 101 on the inner layer moves downwards along the axial direction, so that the retaining sleeve 101 on the inner layer presses the protruding fastening part 23, the fastening part 23 is pressed to move outwards along the radial direction, the elastic part 24 is pushed to be compressed, meanwhile, the hinged hinge rod 22 is pushed to rotate, the upper end of the rotating hinge rod 22 moves inwards, and the pressing block 21 is driven to move inwards along the radial direction. When the embedding groove 12 of the inner wall protection sleeve 101 moves to the position of the fastening portion 23 of the outer wall protection sleeve 102, the fastening portion 23 is pushed to move inwards due to the elastic force of the elastic member 24, so that the fastening portion 23 is embedded in the embedding groove 12, meanwhile, the fastening portion 23 moving inwards drives the hinge rod 22 to return, and the return hinge rod 22 pushes the pressing block 21 to return to the position protruding out of the outer surface of the outer wall protection sleeve 102. Therefore, automatic clamping and embedding can be realized through the movement of the protective wall sleeve 101 on the inner layer, and the device is simple in structure and convenient to control. When the inner retaining wall sleeve 101 and the outer retaining wall sleeve 102 are to be detached, the pressing block 21 is radially pressed at the outer side, so that the pressing block 21 moves inwards under the action of thrust to drive the hinge rod 22 to rotate, the lower end of the hinge rod 22 drags the fastening part 23 to move outwards, and the fastening part is separated from the clamping and embedding groove 12, so that the inner retaining wall sleeve 101 is separated from the limitation of the outer retaining wall sleeve 102. When the fastening portion 23 moves outward, the elastic member 24 is compressed, and when the pressing force is removed, the fastening portion 23 returns by the elastic force of the elastic member 24, thereby detaching the inner retaining sleeve 101. The splitting process is simple and convenient. The automatic dismounting device is suitable for automatic dismounting of the wall protection sleeve 1 through a robot.
To connect the fastening portion 23 with the catching groove 12 of the retaining sleeve 101 of the inner layer more firmly. The inward side of the fastening portion 23 is provided as an inclined surface 25, and the inclined surface 25 is gradually extended from the top to the bottom toward the central axis. The fastening portion 23 forms a wedge, and the inclined surface 25 is inclined over the inner lower side. When the inner retaining sleeve 101 abuts against the inclined surface 25, the inclined surface 25 is pressed, so that the inclined surface 25 generates a radial component force, which makes it easier to push the fastening portion 23 towards the outside. After the fastening portion 23 is inserted into the insertion groove 12 of the inner wall-protecting sleeve 101, the lower surface of the fastening portion 23 is a plane, and the lower surface of the fastening portion 23 is pressed upward, so that a component force is not easily generated in the radial direction, and the inner wall-protecting sleeve 101 is not easily loosened, thereby realizing firm fixation.
In order to make the fastening portion 23 move smoothly along the radial direction, the movement of the fastening portion 23 needs to be limited and guided. The method specifically comprises the following steps: the fastening part 23 is provided with a guide post 26 on the side surface facing outwards, the inner wall of the mounting groove 13 facing outwards is provided with a guide hole (not marked in the figure), and the guide post 26 is embedded in the guide hole; the guide holes are opened along the radial direction, and the fastening part 23 slides in the guide holes through the guide posts 26, so that the fastening part 23 can be limited and guided along the radial direction, and can only move along the radial direction in and out.
The resilient member 24 in this embodiment is a spring that is received over the guide post 26. The spring is sleeved on the guide post 26 for installation, and the structure is simple and convenient to use.
In order to enable the hinged rod 22 to drive the pressing block 21 and the fastening part 23, a first strip-shaped groove 221 is formed in the upper end of the hinged rod 22, a first connecting column 211 is arranged on the pressing block 21, and the first connecting column 211 is located in the first strip-shaped groove 221 and slides; when the hinge rod 22 rotates, the upper end position of the hinge rod changes in the up-down direction and the front-back direction, and the position of the first connecting column 211 in the up-down direction does not change, so that the first connecting column 211 can be driven to move in the inner-outer direction in the sliding process along the first strip-shaped groove 221, and the first connecting column 211 moving in the inner-outer direction drives the pressing block 21 to move in the inner-outer direction. The lower end of the hinge rod 22 is provided with a second strip-shaped groove 222, the fastening part 23 is provided with a second connecting column 231, and the second connecting column 231 is positioned in the second strip-shaped groove 222 to slide; the same principle, when articulated rod 22 rotated, its lower extreme position changed in upper and lower direction and fore-and-aft direction, and second spliced pole 231 was unchangeable in the position of upper and lower direction, was gliding the in-process along second bar groove 222 through second spliced pole 231, just so can drive second spliced pole 231 and carry out the position removal in interior outside orientation, and then drives fastening portion 23 and move along interior outside orientation through the second spliced pole 231 of interior outside orientation removal.
As shown in fig. 1 and 2, two fastening mechanisms 2 are provided in the present embodiment, and the two fastening mechanisms 2 are arranged in mirror symmetry with respect to the central axis. The two fastening mechanisms 2 arranged in mirror symmetry can clamp and embed the inner retaining wall sleeve 101 on two sides, so that the inner retaining wall sleeve 101 is fixed more firmly, and the inner retaining wall sleeve 101 is stably and fixedly connected with the outer retaining wall sleeve 102.
Based on the same concept, the invention also provides equipment for the month-based continuous coring, which comprises the protective wall for the month-based continuous coring, a landing shoulder 6 and a manipulator, wherein the protective wall is as described above. The landing shoulder 6 is positioned in the retaining wall sleeve 1 and is used for fixing the position of the month-based coring drill 7 in the retaining wall sleeve 1 through lateral expansion, and the mechanical arm is used for taking and placing the month-based coring drill 7 and the retaining wall sleeve 1.
As shown in fig. 3, when the equipment is used, the moon-based coring drill 7 is axially fixed in the retaining wall sleeve 1 after being laterally expanded through the landing shoulder 6 positioned in the retaining wall sleeve 1, and friction force is generated by extrusion after the landing shoulder 6 is expanded, so that the top of the moon-based coring drill 7 is fixed, stable support is improved for the moon-based coring drill 7, and counter force is provided for rotary drilling of the moon-based coring drill 7.
The inner wall of the retaining sleeve 1 is provided with a rough area and a lubricating area, the surface of the rough area is rough-processed and is used for being in contact with the landing shoulder 6, so that the landing shoulder 6 can generate enough friction force after expanding by increasing the friction coefficient. The surface of the lubricating area is lubricated, so that the inner wall protection sleeve 101 can be conveniently sleeved with the surface of the inner wall protection sleeve, and the inner wall protection sleeve 101 can smoothly slide down along the outer wall protection sleeve 102.
As shown in fig. 4, the apparatus for month-based continuous coring in the present embodiment further includes: the sleeve frame 4 is provided with a plurality of positioning holes, and the positioning holes correspondingly accommodate a plurality of retaining walls for continuous coring on a month basis. The dado that is used for the continuous core of month base that corresponds sets up a plurality ofly, and a plurality ofly is used for the dado that the continuous core was got of month base all to connect on telescopic frame 4 to fix a position through telescopic frame 4, thereby make the earth position of getting on moon surface fixed, when transferring dado sleeve 1 at every turn, the position that can install the locating hole is transferred, transfers the difficult deviation of position, realizes more accurate earth control process of getting.
Based on the same idea, the invention also proposes a method for month-based continuous coring, wherein the equipment for month-based continuous coring as described above comprises the following steps:
and S100, lowering the retaining wall sleeve and the lunar-based core drilling machine to a preset position together.
As shown in fig. 5, in particular, the entire area planned for placing the retaining sleeve 1 is determined to be clean, and then the retaining sleeve 1 is lowered to a predetermined position together with the month-based coring drill 7.
And step S110, moving the wall protection sleeve and the lunar-based core drilling machine up and down for a plurality of times through the mechanical arm.
Specifically, a bit of shallow hole can be drilled between the retaining wall sleeves, the retaining wall sleeve 1 and the lunar-based core drilling machine 7 are placed into the shallow hole together by the manipulator, and the manipulator moves up and down for a plurality of times, so that the position of the outermost retaining wall sleeve is correct and can reach a standard preset position, and the phenomenon that the retaining wall sleeve stops being placed due to the fact that the wall is rough and the retaining wall sleeve does not reach the preset position is avoided.
And S200, expanding the landing shoulder, and fixing the top of the lunar-based core drilling machine on the inner wall of the wall protection sleeve.
As shown in fig. 6, specifically, the landing shoulder 6 can be expanded by inflation, and friction force is generated due to extrusion, so that the top of the lunar-based coring drill 7 is fixed, and counter force is provided for rotary drilling of the drill.
And step S300, starting the lunar-based core drilling machine, and enabling the drilling tool to rotate clockwise until the drilling tool reaches a preset condition, and stopping rotating.
As shown in fig. 7, specifically, the lunar-based core drilling machine 7 is started to rotate clockwise, the rotation speed of the drilling tool is gradually increased to 60r/min by a pumping or electric driving mode, the rotation is stopped until the drilling tool reaches a predetermined condition, and the preset condition for stopping the rotation is as follows: the predetermined threshold may be set manually, for example, by stopping the rotation of the drilling tool when the torque decreases to a certain value, or by stopping the rotation of the drilling tool when the lifting force decreases to a certain value.
And S400, canceling the landing shoulder, lowering the fisher, pulling out the lunar-based core drilling machine and the rock sample taken by the sampler through the connecting device of the fisher, and keeping the first protective wall sleeve to maintain the stability of the drilled hole.
As shown in fig. 8, a rope 5 is connected to the lunar-based coring drill 7, and the rope 5 is pulled out through the connecting device of the fisher, thereby bringing the lunar-based coring drill 7 out through the rope 5.
And S500, starting the mechanical arm, and lifting the month-based coring drilling machine to a month table.
And step S600, taking another protective wall sleeve and another sampler by the manipulator.
And S700, sleeving the other wall protection sleeve in the previous wall protection sleeve, and putting down the other wall protection sleeve together with the lunar-based core drilling machine.
And step S800, sequentially and circularly executing the steps S200 to S700 until the expected sampling depth is reached, and then stopping.
As shown in fig. 9, through the circulation execution step, the drilling of the month-based core drill is constantly deepened, and the wall protection sleeve is sequentially placed, so that the drilled hole wall is constantly isolated and protected, the deformation of the lunar surface soil body is limited by the wall protection sleeve made of high-strength plastic, the scheme is simple in structure, the space is saved, layer-by-layer splicing is adopted, the guarantee is provided for the operation environment of the month-based core drill, and the reliability is good.
In summary, compared with the prior art, the retaining wall, the equipment and the method for continuous coring of the lunar foundation provided by the invention have the advantages that after the plurality of retaining wall sleeves are sleeved, when a lunar soil layer with a large depth is sampled, the spliced retaining wall sleeves protect the hole wall formed by the drilled hole, so that the hole wall is not easy to collapse. The protective wall is simple to use, can be combined with a control system to realize remote control, adopts a section-by-section splicing mode, and saves space; the structure is simple to use, the number of parts is small, the total weight can be controlled, the carrying load can be greatly reduced under the condition of ensuring the completion of the deep hole wall protection of the moon, and a foundation is laid for the physical and chemical property research of the lunar rock and the mineral resource exploration. Therefore, the retaining wall for the lunar-based continuous coring limits deformation of a lunar surface soil body, is simple in structure, saves space, is spliced layer by layer, provides guarantee for a drilling machine operation environment, is good in reliability, is suitable for a soil environment of a moon, and solves the problem that a retaining wall technology in the prior art cannot be used for the lunar-based coring.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A retaining wall for monthly-based continuous coring, comprising: the wall protection sleeves are sleeved from inside to outside in sequence;
and the fastening mechanism is arranged at the lower end of the wall protection sleeve and is used for being fixedly connected with the upper end of the other wall protection sleeve positioned at the inner side.
2. The retaining wall for the monthly-based continuous coring as set forth in claim 1, wherein the inner wall of the lower part of the retaining wall sleeve is provided with an installation groove, and a pressing hole penetrating the inner wall of the retaining wall sleeve, the pressing hole communicating with the installation groove;
the fastening mechanism includes: the pressing block is movably arranged in the pressing hole, and part of the pressing block protrudes out of an opening on the outer side of the pressing hole;
the hinge rod is hinged to the wall of the mounting groove, and one end of the hinge rod is movably connected to the pressing block;
the movable part of the fastening part protrudes out of the inner opening of the mounting groove and can be arranged in a sliding manner along the radial direction, and the other end of the hinged rod is movably connected with the fastening part;
and one end of the elastic piece is connected with the fastening part, and the other end of the elastic piece is connected with the inner wall of the mounting groove facing to the outer side.
3. A retaining wall for use in continuous month-based coring according to claim 2, wherein the inwardly facing side of the securing portion is provided as a beveled surface extending in a direction from top to bottom progressively closer to the central axis;
the side surface of the fastening part facing outwards is provided with a guide post, the inner wall of the mounting groove facing outwards is provided with a guide hole, and the guide post is embedded in the guide hole;
the elastic piece is a spring, and the spring is sleeved on the guide post.
4. The retaining wall for the lunar-based continuous coring, as claimed in claim 3, wherein the upper end of the hinge rod is provided with a first linear groove, the pressing block is provided with a first connecting column, and the first connecting column is slidably positioned in the first linear groove;
the second bar groove has been seted up to the lower extreme of hinge bar, be provided with the second spliced pole in the fastening portion, the second spliced pole is located slide in the second bar groove.
5. A retaining wall for monthly continuous coring as set forth in claim 1 wherein there are two of said fastening mechanisms, two of said fastening mechanisms being mirror images of the central axis.
6. A retaining wall for monthly-based continuous coring as set forth in claim 1 wherein the outer wall of the retaining sleeve is externally threaded.
7. Equipment for continuous coring on a monthly basis, characterized by comprising a retaining wall for continuous coring on a monthly basis as claimed in any one of claims 1 to 6;
a landing shoulder located within the retaining sleeve and configured to fix the position of a lunar-based coring drill within the retaining sleeve by lateral expansion; and
a manipulator for picking and placing the lunar-based coring drill and the retaining wall sleeve.
8. The apparatus for month-based continuous coring according to claim 7, wherein the apparatus for month-based continuous coring further comprises: the sleeve frame is provided with a plurality of positioning holes, and the positioning holes correspondingly accommodate a plurality of retaining walls for continuous coring on a month basis.
9. Method for month-based continuous coring, characterized in that it is used in an apparatus for month-based continuous coring according to any one of claims 7 to 8, comprising the steps of:
the wall protection sleeve and the lunar-based core drilling machine are put down to a preset position together;
the shoulder is expanded, and the top of the moon-based core drilling machine is fixed on the inner wall of the retaining wall sleeve;
starting the lunar-based core drilling machine to enable the drilling tool to rotate clockwise, and stopping rotating until the drilling tool reaches a preset condition;
the landing shoulder is cancelled, the fisher is lowered, the lunar-based core drilling machine and the rock sample taken by the sampler are pulled out through the connecting device of the fisher, and the first protective wall sleeve is reserved to maintain the stability of the drilled hole;
starting the mechanical arm, and lifting the lunar-based coring drilling machine to a lunar surface;
the manipulator takes the other protective wall sleeve and the other sampler;
another wall protection sleeve is sleeved in the previous wall protection sleeve and is lowered down together with the lunar-based core drilling machine,
and sequentially and circularly executing the step of landing shoulder expansion, fixing the top of the monthly-based coring drilling machine on the inner wall of the retaining wall sleeve, and the step of sleeving the other retaining wall sleeve in the last retaining wall sleeve and putting down the retaining wall sleeve and the monthly-based coring drilling machine together until the expected sampling depth is reached.
10. A method for month-based continuous coring according to claim 9, wherein the step of lowering the retaining sleeve to a predetermined position with the month-based coring drill further comprises the steps of:
the wall protection sleeve and the lunar-based core drilling machine move up and down for a plurality of times through the mechanical arm;
in the step of starting the lunar-based core drilling machine to enable the drilling tool to rotate clockwise until the drilling tool reaches the preset condition, stopping rotating:
the drilling tool gradually increases the rotating speed to 60r/min in a pumping pressure or electric driving mode;
the preset conditions for stopping the rotation are as follows: the drill cannot continue drilling down or the torque and lift force are reduced to a predetermined threshold.
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| CN202111594183.0A CN114348304B (en) | 2021-12-23 | 2021-12-23 | Retaining wall, equipment and method for monthly-based continuous coring |
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| CN202111594183.0A CN114348304B (en) | 2021-12-23 | 2021-12-23 | Retaining wall, equipment and method for monthly-based continuous coring |
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