CN115962975B - Sampling equipment for geological survey sample - Google Patents
Sampling equipment for geological survey sample Download PDFInfo
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- CN115962975B CN115962975B CN202310252424.6A CN202310252424A CN115962975B CN 115962975 B CN115962975 B CN 115962975B CN 202310252424 A CN202310252424 A CN 202310252424A CN 115962975 B CN115962975 B CN 115962975B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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Abstract
The invention discloses sample sampling equipment for geological investigation, which comprises a separation main body, wherein the separation main body comprises a separation plate, a first sampling hole is formed in the separation plate, a first groove-shaped plate connected with a port of the first sampling hole is arranged on the outer surface of the separation plate, and a sampling part comprises a sampling plate which is positioned on one side of the separation plate. This a sampling equipment for geological survey sample can solve among the prior art effectively, for example peat or soft soil sample, and most are the manual work adopts drilling tool sampler, inserts peat or soft soil in with it and take a sample, receives earth resistance effect when pressing down to individual degree of depth sample drilling tool sampler, and drilling tool sampler takes place the skew easily, can't guarantee that drilling tool sampler inserts perpendicularly, and then leads to the inaccurate problem of drilling tool sampler sampling point.
Description
Technical Field
The invention relates to the technical field of geological sampling, in particular to sampling equipment for geological survey samples.
Background
Geological survey factors include geological structures or structures: the physical and mechanical properties of land, hydrogeologic conditions, soil and rock, natural geologic phenomena, natural building materials, etc., which are commonly referred to as engineering geologic conditions, after the engineering geologic conditions are ascertained, the earth surface soil needs to be sampled in the geological investigation and mineral exploration processes according to the structure and operation characteristics of the designed building.
Geological survey is based on geological observation research, according to task requirements, the principle of obtaining more and better geological results in a shorter time and less workload is adopted, necessary technical means or methods, such as peat or soft soil sampling, are selected, most of the geological survey adopts drilling tool samplers which are manually inserted into peat or soft soil for sampling, and aiming at individual deep sampling, the drilling tool samplers are subjected to soil resistance when being pressed down, the drilling tool samplers are easy to incline and deviate, vertical insertion of the drilling tool samplers cannot be guaranteed, and then the sampling points of the drilling tool samplers are inaccurate.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects existing in the prior art, the invention provides the sampling equipment for the geological survey samples, which can effectively solve the problems that in the prior art, for example, peat or soft soil is sampled, most of the sampling equipment is manually provided with a drilling tool sampler, the drilling tool sampler is inserted into peat or soft soil for sampling, and aiming at individual deep sampling, the drilling tool sampler is subject to soil resistance when being pressed down, the drilling tool sampler is easy to incline and deviate, the vertical insertion of the drilling tool sampler cannot be ensured, and the sampling point of the drilling tool sampler is inaccurate.
Technical proposal
In order to achieve the above purpose, the invention is realized by the following technical scheme:
the invention provides a sampling device for geological survey samples, comprising:
the separation main body comprises a separation plate, a first sampling hole is formed in the separation plate, and a first groove-shaped plate connected with the end opening of the first sampling hole is arranged on the outer surface of the separation plate;
the sampling part, the sampling part is including the sampling board, the sampling board is located division board one side, sampling board external surface fixedly connected with and division board outside sliding sleeve sliding connection's interior slide bar, the inside second sample hole that is linked together with first sample hole of having seted up of sampling board, sampling board is close to division board one side and is provided with the second groove template that is connected with second sample hole port, the sampling board rotates through the bearing block that sets up at its top and is connected with the sample piece.
Further, the separation plate and the sampling plate are integrally formed by thin steel materials, and the bottom of the separation plate is designed in a triangular mode.
Further, still include the correction piece, the correction piece includes the horizontal plate, the horizontal plate cover is established at division board and sampling plate surface, the round hole has been seted up to the inside horizontal plate, horizontal plate upper surface fixedly connected with and division board and sampling plate surface cardboard of laminating mutually.
Further, the top of the horizontal plate is fixedly communicated with a positioning block, and the upper surface of the horizontal plate is provided with a friction strip.
Further, the sampling piece includes interior bull stick, interior bull stick top fixedly connected with and the inside interior commentaries on classics piece of rotating connection of bearing block, interior bull stick circumference surface cover is equipped with the semi-closed pipe with first sampling hole and second sampling hole inner wall sliding connection.
Further, the sampling plate is close to the fixing base that division board one side fixedly connected with and inner rotating rod bottom rotated and are connected, the open-type design is adopted on the semi-closed pipe top, the semi-closed pipe is through setting up the support and inner rotating rod circumference surface fixed connection on its top, inner rotating piece circumference surface fixed connection has the holding rod.
Further, the circumference outer surface of the semi-closed pipe is attached to the inner wall of the round hole.
Advantageous effects
Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention is provided with the division plate, the horizontal plate, the clamping plate, the inner slide bar and the sampling part, the division plate is integrally formed by thin steel materials, the bottom of the division plate adopts a triangle design, the division plate is inserted into peat or soft soil to slide downwards easily, the transverse sectional area of the division plate is very small, the resistance is small, and single sheet sliding is not interfered by other factors, so that the division plate is not easy to deviate when sliding downwards, and the division plate is further ensured to slide downwards easily by being matched with the four sides limit of the clamping plate. Then insert the sliding sleeve in the interior slide alignment division board outside sliding sleeve on the sampling portion, when the sliding sleeve inner wall of interior slide along its outside was down slided, the division board wholly played vertical positioning action to the sampling portion, and cooperation horizontal plate and cardboard are fixed, when exerting the dynamics to the sampling portion, keep the whole vertical downslide of sampling portion and can not take place the skew, greatly improve sampling accuracy.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is evident that the drawings in the following description are only some embodiments of the present invention and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.
FIG. 1 is a schematic view of a three-dimensional structure of an embodiment of the present invention;
FIG. 2 is a schematic diagram of a three-dimensional state transformation structure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing a three-dimensional transformation structure of a sampling portion according to an embodiment of the present invention;
FIG. 4 is a schematic view of a semi-closed tube three-dimensional rotation structure according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a three-dimensional structure of a calibration member according to an embodiment of the present invention;
FIG. 6 is a schematic view of a three-dimensional part of the semi-closed tube prior to sampling according to an embodiment of the present invention;
FIG. 7 is a schematic view of a three-dimensional partial multi-angle structure before semi-closed tube sampling according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of a three-dimensional structure of a sampling member according to an embodiment of the present invention;
FIG. 9 is a schematic view showing a three-dimensional separation structure of a separation plate and a sampling plate according to an embodiment of the present invention;
fig. 10 is a schematic view showing a three-dimensional separation multi-angle structure of a separation plate and a sampling plate according to an embodiment of the present invention.
Reference numerals in the drawings represent respectively: 1. a partition main body; 11. a partition plate; 12. a first sampling hole; 13. a first slot-shaped plate; 2. a sampling unit; 21. sampling a template; 211. a fixing seat; 22. an inner slide bar; 23. a second sampling hole; 24. a second slot-shaped plate; 25. a bearing block; 26. sampling a sample piece; 261. an inner rotating rod; 262. an inner rotating block; 263. semi-closing the pipe; 264. a bracket; 265. a grip; 3. a correction member; 31. a horizontal plate; 32. a round hole; 33. a clamping plate; 34. a positioning block; 35. friction strips.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It will be apparent that the described embodiments are some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention is further described below with reference to examples.
Examples:
referring to fig. 1 to 10, the present invention provides a technical solution: a sampling device for geological survey samples, comprising:
the separating body 1, the separating body 1 comprises a separating plate 11, a first sampling hole 12 is formed in the separating plate 11, and a first groove-shaped plate 13 connected with a port of the first sampling hole 12 is arranged on the outer surface of the separating plate 11;
the sampling part 2, sampling part 2 is including sampling board 21, sampling board 21 is located division board 11 one side, sampling board 21 surface fixedly connected with division board 11 outside sliding sleeve sliding connection's interior slide bar 22, the inside second sampling hole 23 that is linked together with first sampling hole 12 of having seted up of sampling board 21, sampling board 21 is close to division board 11 one side and is provided with the second slotted plate 24 that is connected with second sampling hole 23 port, sampling board 21 rotates through the bearing block 25 that sets up at its top and is connected with sampling piece 26.
The partition plate 11 and the sampling plate 21 are integrally formed by thin steel materials, and the bottom of the partition plate 11 is designed in a triangular shape.
Still include correcting member 3, correcting member 3 includes horizontal plate 31, and horizontal plate 31 cover is established at division board 11 and sampling plate 21 surface, and round hole 32 has been seted up to horizontal plate 31 inside, and horizontal plate 31 upper surface fixedly connected with and division board 11 and sampling plate 21 surface cardboard 33 of laminating mutually. The division board 11 is thin steel integrated into one piece to the bottom of division board 11 adopts triangle-shaped design, so the triangle-shaped bottom of division board 11 cooperation of thin system, inserts it in peat or the soft soil very easily downwardly sliding, and the transverse cross-section area of division board 11 is very little, and the resistance is less, and single thin slice downslide is not interfered by other factors, and then is difficult for off tracking when division board 11 downslide, and the four sides of cooperation cardboard 33 are spacing, further guarantees that division board 11 can light vertical downslide.
The top of the horizontal plate 31 is fixedly communicated with a positioning block 34, and the upper surface of the horizontal plate 31 is provided with a friction strip 35. The locating pin runs through locating piece 34 and extends earth deep, fixes the position of horizontal plate 31, prevents that follow-up sampling in-process, and horizontal plate 31 from taking place skew or rotation, leads to the sampling point inaccurate, and friction strip 35 upper surface is stepped on to cooperation foot part, further consolidates the fixed to horizontal plate 31.
The sampling piece 26 comprises an inner rotating rod 261, an inner rotating block 262 which is rotationally connected with the inside of the bearing block 25 is fixedly connected to the top end of the inner rotating rod 261, and a semi-closed tube 263 which is slidably connected with the inner walls of the first sampling hole 12 and the second sampling hole 23 is sleeved on the circumferential outer surface of the inner rotating rod 261.
The sampling plate 21 is close to the fixing base 211 that division board 11 one side fixedly connected with and inner rotating rod 261 bottom rotated and be connected, and the open-type design is adopted at half closed tube 263 top, and half closed tube 263 is through setting up the support 264 and inner rotating rod 261 circumference surface fixed connection at its top, and in the sampling process, earth gets into half closed tube 263, and support 264 is used for half closed tube 263 inside gaseous quick the getting rid of, inner rotating block 262 circumference surface fixed connection has holding rod 265.
The circumferential outer surface of the semi-closed tube 263 is attached to the inner wall of the circular hole 32.
Referring to fig. 1-10, geological survey must be based on geological observation study, according to task requirements, based on the principle of obtaining more and better geological results with shorter time and less workload, necessary technical means or methods, such as peat or soft soil sampling, are selected, and most of them are manually sampled by inserting a drilling tool sampler into peat or soft soil, and aiming at individual deep sampling, the drilling tool sampler is subject to soil resistance when being pressed down, the drilling tool sampler is easy to incline and deviate, vertical insertion of the drilling tool sampler cannot be guaranteed, and thus the sampling point of the drilling tool sampler is inaccurate;
in order to overcome the defects, the invention designs a sampling device for geological exploration samples.
Specifically, the partition main body 1, the sampling portion 2, and the correction piece 3 are installed in a distributed manner:
the horizontal plate 31 on the correcting element 3 is firstly placed on the pre-sampling ground surface (the ground surface is flattened in advance) and is subjected to horizontal correction, then the locating block 34 is penetrated through by a locating pin to extend the soil deep position, the position of the horizontal plate 31 is fixed, the horizontal plate 31 is prevented from shifting or rotating in the subsequent sampling process, the sampling point is inaccurate, the upper surface of the friction strip 35 is partially stepped on by the matching foot, and the fixing of the horizontal plate 31 is further reinforced.
Then, the partition plate 11 on the partition main body 1 vertically slides downwards along the inner wall of the clamping plate 33 on the correcting piece 3 (the push-pull handle is fixed on the outer side of the partition plate 11), and as the partition plate 11 is integrally formed by thin steel materials and the bottom of the partition plate 11 is designed to be triangular, the thin partition plate 11 is matched with the triangular bottom and is inserted into peat or soft soil to slide downwards easily, the transverse sectional area of the partition plate 11 is very small, the resistance is small, and single sheet sliding is not interfered by other factors, so that the partition plate 11 is not easy to deviate when sliding downwards, and the partition plate 11 is further ensured to be vertically and downwards sliding easily by being matched with four sides of the clamping plate 33.
Meanwhile, the outer surface of the sampling plate 21 is fixedly connected with an inner slide rod 22 (the outer slide sleeve of the partition plate 11 is only opened at the upper end, and then the inside of the slide sleeve is clean and does not contain soil), the inner slide rod 22 on the sampling part 2 is firstly aligned with the outer slide sleeve of the partition plate 11 and inserted, then the holding rod 265 on the sampling piece 26 is held by two hands to push downwards, the inner slide rod 22 is driven to slide along the inner wall of the slide sleeve, the sampling plate 21, the bearing block 25 and the sampling piece 26 are driven to slide downwards synchronously, and the partition plate 11 vertically slides into soil in advance and keeps a vertical state, so that when the inner slide rod 22 slides downwards along the inner wall of the slide sleeve on the outer side of the partition plate, the partition plate 11 plays a role in vertically positioning the whole sampling part 2, and is matched with the fixation of the horizontal plate 31 and the clamping plate 33, and when force is applied to the sampling part 2, the whole sampling part 2 is kept vertically sliding and cannot deviate, and the sampling precision is greatly improved (if the sampling part 2 is directly inserted into peat or soft soil to sample, the sampling part 2 is easy to incline and deviate. The conventional drilling tool sampler is inserted into soil, the periphery of the conventional drilling tool sampler is subjected to the friction force of the soil, the resistance is larger, firstly, the partition plate 11 is vertically and slidably installed, then the sampling part 2 is vertically and downwardly slid close to the outer surface of the partition plate 11, the friction force of the soil on one side of the sampling part 2 close to the partition plate 11 is reduced, secondly, the sampling plate 21 is integrally formed by thin steel, the transverse sectional area of the partition plate 11 is very small, the sampling plate is easily inserted into peat or soft soil to slide downwards, the resistance is smaller, and the sampling part 2 and the partition plate 11 are distributed and slide downwards.
Sampling method of sampling unit 2:
when the inner slide rod 22 on the sampling portion 2 slides into the bottom of the sliding sleeve on the outer side of the partition plate 11, the first sampling hole 12 corresponds to the second sampling hole 23 (the opening width of the second sampling hole 23 is slightly larger than that of the first sampling hole 12), as the two sides of the semi-closed tube 263 are initially located in the second sampling hole 23 and the second slot-shaped plate 24 respectively, and then the semi-closed tube 263 does not contain any soil, then the holding rod 265 is manually rotated clockwise to drive the inner slide block 262 to rotate around the inside of the bearing block 25, the inner slide rod 261 is driven to rotate around the inside of the fixed seat 211, the semi-closed tube 263 is driven to rotate clockwise to sequentially pass through the second sampling hole 23 and the first sampling hole 12 (one side of the semi-closed tube 263 adopts a V-shaped design to reduce resistance; when the latter rotates reversely, the first sampling hole 12 also plays a role of rapidly scraping soil on the inner wall of the semi-closed tube 263, and the partition plate 11 and the sampling piece 26 are also designed separately, so that the components are independently cleaned, the partition plate 11 is far away from the soil on one side of the sample plate 21 to enter the semi-closed tube 263, until the semi-closed tube 263 is manually rotated clockwise, and finally the V-shaped plate 263 is pulled upwards, and the soil is completely removed from the semi-closed tube 263, and finally the semi-closed tube 263 is completely, and the semi-closed tube 263 is completely pulled into the hollow, and the hollow tube 263 is completely, and the hollow body is completely.
Distributed sampling advantage:
the advantage one, utilize the thin steel integrated into one piece of division board 11, the bottom of division board 11 adopts triangle-shaped design, inserts it very little in peat or the soft soil of sliding very easily, the transverse cross-section area of division board 11 is very little, the resistance is less to single thin slice gliding is not interfered by other factors, and then is difficult for the off tracking when division board 11 gliding, cooperates the four sides of cardboard 33 spacing, further guarantees division board 11 can light vertical gliding. Meanwhile, when the inner slide rod 22 on the sampling part 2 slides downwards along the inner wall of the sliding sleeve at the outer side of the partition plate 11, the partition plate 11 plays a role in vertically positioning the whole sampling part 2, and the whole sampling part 2 is kept vertically sliding downwards without shifting by matching with the fixation of the horizontal plate 31 and the clamping plate 33, so that the sampling precision is greatly improved.
The advantage two, division board 11 preferential vertical sliding installation, division board 11 surface vertical sliding is pressed close to sampling portion 2, and sampling portion 2 is close to the earth frictional force that one side of division board 11 receives will be reduced to division board 11's transverse cross-sectional area is very little, and the resistance is less, compares traditional drilling tool sampler direct insertion, and division board 11 and sampling portion 2 distributed sampling resistance are less relatively.
The advantage three, when traditional drilling tool sampler samples, the sampling pipe bottom cross section in the drilling tool sampler is great, and when the sampling pipe was constantly gliding in peat or soft soil, the peat or soft soil of sampling pipe bottom can extrude below was diffused all around, caused different degree of depth peat or soft soil internal mix, then the sampling pipe directly samples at its periphery, and the earth of different degree of depth is doped each other, can lead to the sampling inaccurate. In the invention, the thin partition plate 11 is preferably vertically inserted, the transverse sectional area of the partition plate 11 is very small (relative to the bottom end of the sampling tube), the cross section of the partition plate is not too much disturbed on the peat or soft soil around the partition plate, the original characteristics of the peat or soft soil around the partition plate are further ensured, the surface area of the partition plate 11 is far larger than the surface area of the sampling plate 21 (the surface area of the sampling plate 21 in soil is projected on the partition plate 11), when the sampling piece 26 is inserted in a distributed manner, the partition plate 11 plays a role in separation, the side of the partition plate 11 far away from the sampling piece 26 is not disturbed by the sampling piece 26 (even if the lower part of the sampling piece 26 extrudes soil), and meanwhile, the half-closed tube 263 is rotated clockwise to sequentially pass through the second sampling hole 23 and the first sampling hole 12, so as to collect peat or soft soil on the side of the partition plate 11 far away from the sampling piece 26, and further improve the sampling precision.
The above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; these modifications or substitutions do not depart from the essence of the corresponding technical solutions from the protection scope of the technical solutions of the embodiments of the present invention.
Claims (1)
1. A sampling device for geological survey samples, comprising:
the separating body (1), the separating body (1) comprises a separating plate (11), a first sampling hole (12) is formed in the separating plate (11), and a first groove-shaped plate (13) connected with a port of the first sampling hole (12) is arranged on the outer surface of the separating plate (11);
sampling portion (2), sampling portion (2) are including sampling board (21), sampling board (21) are located division board (11) one side, sampling board (21) surface fixedly connected with division board (11) outside sliding sleeve sliding connection's interior slide bar (22), sampling board (21) inside set up second sampling hole (23) that are linked together with first sampling hole (12), sampling board (21) are close to division board (11) one side and are provided with second grooved template (24) that are connected with second sampling hole (23) port, sampling board (21) are connected with sampling piece (26) through setting up bearing block (25) rotation at its top.
The utility model provides a thin steel integrated into one piece, division board (11) and sampling board (21) are thin steel integrated into one piece, triangle-shaped design is adopted to the bottom of division board (11), still includes correction piece (3), correction piece (3) are including horizontal plate (31), horizontal plate (31) cover is established at division board (11) and sampling board (21) surface, round hole (32) have been seted up inside horizontal plate (31), horizontal plate (31) upper surface fixedly connected with and division board (11) and sampling board (21) surface cardboard (33) of laminating mutually, fixed intercommunication in horizontal plate (31) top has locating piece (34), horizontal plate (31) upper surface is provided with friction strip (35);
the sampling piece (26) comprises an inner rotating rod (261), an inner rotating block (262) which is connected with the inner rotating of the bearing block (25) is fixedly connected to the top end of the inner rotating rod (261), a semi-closed pipe (263) which is connected with the inner wall of the first sampling hole (12) and the inner wall of the second sampling hole (23) in a sliding mode is sleeved on the circumferential outer surface of the inner rotating rod (261), a fixing seat (211) which is connected with the bottom end of the inner rotating rod (261) in a rotating mode is fixedly connected to one side of the sampling plate (21) close to the partition plate (11), the top end of the semi-closed pipe (263) is in an open type design, the semi-closed pipe (263) is fixedly connected with the circumferential outer surface of the inner rotating rod (261) through a support (264) arranged at the top end of the semi-closed pipe, a holding rod (265) is fixedly connected to the circumferential outer surface of the inner rotating block (262), and the circumferential outer surface of the semi-closed pipe (263) is attached to the inner wall of the round hole (32).
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| CN202310252424.6A CN115962975B (en) | 2023-03-16 | 2023-03-16 | Sampling equipment for geological survey sample |
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| CN116448488A (en) * | 2023-05-23 | 2023-07-18 | 中国地质大学（北京） | Portable geological survey sampling device |
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| CN112240839A (en) * | 2020-10-09 | 2021-01-19 | 王元 | Geotechnical sampling device and sampling method for geotechnical engineering investigation |
| CN214277468U (en) * | 2021-01-20 | 2021-09-24 | 谢兰芳 | Sampling device for geotechnical engineering geological exploration |
| CN115127859A (en) * | 2022-05-23 | 2022-09-30 | 山东省地质测绘院 | Water conservancy project ring ecological geology reconnaissance sampling device under unfavorable geological conditions |
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| CN107389373A (en) * | 2017-07-07 | 2017-11-24 | 中水淮河规划设计研究有限公司 | A kind of hemizygous pipe sampler |
| CN208313610U (en) * | 2018-04-03 | 2019-01-01 | 广西壮族自治区环境监测中心站 | Topsoil stratified sampler |
| CN214584193U (en) * | 2021-04-22 | 2021-11-02 | 魏明敏 | Sampler for soil ecological environment restoration |
| CN215374562U (en) * | 2021-08-06 | 2021-12-31 | 马金凤 | Environment monitoring soil sampler |
| CN216926129U (en) * | 2022-03-11 | 2022-07-08 | 周天君 | Soil sampler for environmental protection detection |
| CN114858511A (en) * | 2022-05-12 | 2022-08-05 | 山东省地质矿产勘查开发局八〇一水文地质工程地质大队(山东省地矿工程勘察院) | Hydraulic ring geological survey sampling device and using method |
| CN115478780A (en) * | 2022-10-08 | 2022-12-16 | 山东省煤田地质局物探测量队 | Geology reconnaissance probing device |
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| CN112240839A (en) * | 2020-10-09 | 2021-01-19 | 王元 | Geotechnical sampling device and sampling method for geotechnical engineering investigation |
| CN214277468U (en) * | 2021-01-20 | 2021-09-24 | 谢兰芳 | Sampling device for geotechnical engineering geological exploration |
| CN115127859A (en) * | 2022-05-23 | 2022-09-30 | 山东省地质测绘院 | Water conservancy project ring ecological geology reconnaissance sampling device under unfavorable geological conditions |
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