CN220381124U - Soil radon concentration rapid detection integrated device for complex geology - Google Patents
Soil radon concentration rapid detection integrated device for complex geology Download PDFInfo
- Publication number
- CN220381124U CN220381124U CN202322004362.5U CN202322004362U CN220381124U CN 220381124 U CN220381124 U CN 220381124U CN 202322004362 U CN202322004362 U CN 202322004362U CN 220381124 U CN220381124 U CN 220381124U
- Authority
- CN
- China
- Prior art keywords
- drill rod
- spiral drill
- hollow spiral
- sampling
- soil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910052704 radon Inorganic materials 0.000 title claims abstract description 47
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 title claims abstract description 47
- 239000002689 soil Substances 0.000 title claims abstract description 46
- 238000001514 detection method Methods 0.000 title claims abstract description 42
- 238000005070 sampling Methods 0.000 claims abstract description 63
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 238000005553 drilling Methods 0.000 claims description 21
- 238000007789 sealing Methods 0.000 claims description 16
- 230000000087 stabilizing effect Effects 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 238000012031 short term test Methods 0.000 claims 1
- 238000004080 punching Methods 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000007789 gas Substances 0.000 description 4
- 230000006978 adaptation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 230000005641 tunneling Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003933 environmental pollution control Methods 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000002680 soil gas Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a soil radon concentration rapid detection integrated device for complex geology, wherein a detection mechanism for detecting the soil radon concentration is arranged on a mobile trolley, the detection mechanism comprises a driving mechanism, a hollow spiral drill rod, a radon detector, a battery pack, a sampling steel pipe and a sampling hose, the mobile trolley is provided with the driving mechanism for driving the hollow spiral drill rod to drill into soil, the hollow spiral drill rod is internally provided with the sampling steel pipe which is matched with the hollow spiral drill rod in length and is of a hollow structure, and a rod body of the sampling steel pipe, which protrudes out of the hollow spiral drill rod, is provided with a sampling hole for collecting gas in soil; when the automatic radon concentration sampling and detecting device is used for outdoor detection operation, accurate and efficient automatic punching operation can be realized, radon concentration sampling and detecting operation can be conveniently and efficiently finished after punching is finished, the soil radon concentration detecting efficiency is greatly improved, and the operation difficulty of staff is reduced.
Description
Technical Field
The utility model relates to the technical field of environmental impact assessment, in particular to a soil radon concentration rapid detection integrated device for complex geology.
Background
According to the latest regulations in the article 4.1.1 of the domestic construction engineering indoor environmental pollution control Standard GB 50325-2020: the method comprises the steps of carrying out investigation on radon concentration or radon precipitation rate of soil surface in soil of a city area where a new building engineering and an expanded building engineering are located before design, submitting corresponding investigation reports, arranging detection points of a construction site, taking a distance of 10m as a grid, deviating from + -2 m in special conditions, covering the range of a building foundation engineering, and carrying out numerous types of existing soil radon detection equipment, wherein the following problems still exist in the actual detection operation process:
firstly, the layout work of the on-site detection points wastes a great deal of time, and often needs professional mapping personnel to consume a great deal of time to solve;
secondly, the existing detection equipment needs to adopt manpower to punch holes before detection, and is very difficult for hard or sand geological punching;
and the existing perforation and radon concentration detection are separately carried out, so that the detection efficiency is greatly reduced, the reliability of a detection result is low due to easy air backflow, and the detection result is particularly scattered in large-area construction site equipment and is not beneficial to high-efficiency and rapid development of detection work.
Disclosure of Invention
In order to overcome the defects in the background art, the utility model discloses an integrated device for quickly detecting the radon concentration in soil for complex geology.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a quick detection integrated device of soil radon concentration for complicated geology, include the travelling car that comprises chassis, wheel and dolly driving motor, be equipped with the detection mechanism that is used for detecting soil radon concentration on the travelling car, detection mechanism includes actuating mechanism, hollow auger stem, radon detector, the group battery, sample steel pipe and sampling hose, be equipped with the actuating mechanism that is used for driving hollow auger stem to the soil internal drilling on the travelling car, be equipped with in the hollow auger stem with hollow auger stem length looks adaptation, and be hollow structure's sample steel pipe, the hollow auger stem lower extreme is equipped with the opening with sample steel pipe looks adaptation, the sample steel pipe lower extreme is equipped with the drill bit that is located hollow auger stem tip, body of rod upper portion one side of hollow auger stem is equipped with along the axial setting of hollow auger stem, and the sliding groove that is linked together with hollow auger stem inner chamber, sliding fit has and is linked together with the sample steel pipe inner chamber, and be used for promoting the sample steel pipe gliding connection pipe from top to bottom, be equipped with the sample hole that is used for gathering soil internal gas on the body of rod of the body of the hollow auger stem that is visited through radon the detection motor, be connected with the connecting pipe with the sampling hose and the group battery all.
Further, a trolley bracket for storing the radon detector, the battery pack and the trolley driving motor is arranged on the chassis.
Further, the upper part of the trolley bracket is provided with an electronic hand book for inputting and recording coordinate information.
Further, actuating mechanism includes rig, carriage, sliding sleeve, contact wheel and threaded rod, and chassis upper portion is equipped with the carriage of vertical setting, and carriage one side is equipped with the threaded rod that parallels with the carriage, and sliding fit has the sliding sleeve that can follow the carriage and reciprocate on the carriage, and hollow auger stem is located the carriage, and with carriage parallel arrangement, the body of rod of hollow auger stem be equipped with threaded rod screw fit's contact wheel, be equipped with on the sliding sleeve and be used for driving hollow auger stem and carry out pivoted rig.
Further, the upper part of the rod body of the hollow spiral drill rod is rotationally connected with a bearing, the outer ring of the bearing is fixedly connected with the sliding sleeve, and the lower part of the rod body of the hollow spiral drill rod is provided with a stabilizing ring.
Further, the upper part of the sliding support is provided with a GNSS receiver which corresponds to the hollow spiral drill rod and is connected with the electronic hand book.
Further, a fixed groove which corresponds to the sliding groove and is used for limiting and blocking the connecting pipe is arranged on the other side of the upper portion of the rod body of the hollow spiral drill rod.
Further, a compression spring is sleeved on the rod body of the sampling steel tube.
Further, the lower part of the rod body of the sampling steel pipe is provided with a sealing hoop positioned at the upper side of the sampling hole, and the lower surface of the sealing hoop and the upper surface of the opening at the lower end of the hollow spiral drill rod are both provided with sealing gaskets.
Further, the sliding support is provided with scales arranged along the axial direction of the sliding support.
Compared with the prior art, the utility model has the beneficial effects that:
through the arrangement of the hollow spiral drill rod, the spiral drill rod can smoothly advance for soil with hard underground soil or sand gravel, has the advantages of higher slag removal speed, good punching and shaping performance and difficult drill sticking, and can be applied to various geological structure conditions;
through the arrangement of the sliding support and the sliding sleeve, a worker does not need to fix and press the drilling machine in the drilling process of the hollow spiral drill rod, the purpose of automatically lifting the drilling machine is achieved, the risk brought by manual operation is reduced, and the drilling efficiency is high;
through setting up the sampling steel pipe that can slide up and down, after the drill bit is deep into the prescribed distance, carry and bore a certain distance, operate the sampling steel pipe and slide down, make the sampling hole stretch into the soil cavity and finish the sample;
through setting up GNSS receiver and electron hand book for guide drilling location, operation rig drilling and operation such as sample detection can all be accomplished by a staff, location is accurate, saves a large amount of manpowers, and device convenient operation is simple, has effectively improved soil radon concentration detection's operating efficiency compared with traditional split type operation;
by arranging the bearing and the stabilizing ring, the drilling direction of the hollow spiral drill rod can be effectively stabilized, the hollow spiral drill rod is ensured to drill holes according to preset positions, and the requirements of relevant specifications on density and interval of soil radon detection points are better met;
by arranging the sealing hoop and the sealing gasket, the space between the sampling hole and the sampling steel pipe can be completely sealed in the process of sampling gas in soil, and the outside air is isolated;
by arranging scales on the sliding support, a worker can accurately control the drilling depth and the drilling lifting distance;
when the automatic radon concentration sampling and detecting device is used for outdoor detection operation, accurate and efficient automatic punching operation can be realized, radon concentration sampling and detecting operation can be conveniently and efficiently finished after punching is finished, the soil radon concentration detecting efficiency is greatly improved, and the operation difficulty of staff is reduced.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a schematic view of the lower part structure of the sampling steel pipe of the present utility model;
FIG. 3 is a schematic diagram of the upper structure of the sampling steel pipe according to the present utility model.
In the figure: 1. a GNSS receiver; 2. a sliding support; 3. a sliding sleeve; 4. a drilling machine; 5. a bearing; 6. a contact wheel; 7. a connecting pipe; 8. a threaded rod; 9. a hollow auger stem; 10. a stabilizing ring; 11. a drill bit; 12. an electronic handbook; 13. trolley armrests; 14. a trolley bracket; 15. a radon detector; 16. a battery pack; 17. a trolley driving motor; 18. sampling the steel pipe; 19. a sealing collar; 20. a sealing gasket; 21. a sampling hole; 22. a compression spring; 23. a fixing groove; 24. a construction hole; 25. a wheel; 26. a chassis; 27. a sliding groove; 28. sampling hose
Detailed Description
In the description, it should be understood that, if there is an azimuth or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left", "right", etc., the drawings merely correspond to the drawings of the present utility model, and in order to facilitate description of the present utility model, it is not necessary to indicate or imply that the apparatus or element to be referred to has a specific azimuth.
Referring to fig. 1-3 of the specification, the present utility model provides a technical scheme:
an embodiment I, a soil radon concentration rapid detection integrated device for complex geology, comprising a mobile trolley consisting of a chassis 26, wheels 25 and a trolley driving motor 17, wherein the mobile trolley is provided with a detection mechanism for detecting soil radon concentration, the detection mechanism comprises a driving mechanism, a hollow auger stem 9, a radon detector 15, a battery pack 16, a sampling steel tube 18 and a sampling hose 28, the chassis 26 is provided with a trolley bracket 14 for storing the radon detector 15, the battery pack 16 and the trolley driving motor 17, the upper part of the trolley bracket 14 is provided with an electronic handbook 12 for inputting and recording coordinate information and soil detection information, the mobile trolley is provided with a driving mechanism for driving the hollow auger stem 9 to drill into soil, the driving mechanism comprises a drilling machine 4, a sliding bracket 2, a sliding sleeve 3, a contact wheel 6 and a threaded rod 8, the trolley support 14 is provided with a vertically arranged sliding support 2 on one side, scales arranged along the axial direction of the sliding support 2 are arranged on the sliding support 2, a threaded rod 8 parallel to the sliding support 2 is arranged on one side of the sliding support 2, a sliding sleeve 3 capable of sliding up and down along the sliding support 2 is slidably matched on the sliding support 2, a hollow spiral drill rod 9 is positioned in the sliding support 2 and is parallel to the sliding support 2, a rod body of the hollow spiral drill rod 9 is provided with a contact wheel 6 in threaded fit with the threaded rod 8, a drilling machine 4 for driving the hollow spiral drill rod 9 to rotate is arranged on the sliding sleeve 3, a GNSS receiver 1 corresponding to the hollow spiral drill rod 9 and connected with an electronic handbook 12 is arranged on the upper part of the sliding support 2, a sampling steel pipe 18 which is matched with the length of the hollow spiral drill rod 9 and is of a hollow structure is arranged in the hollow spiral drill rod 9, the lower end of the hollow spiral drill rod 9 is provided with an opening matched with the sampling steel pipe 18, the lower end of the sampling steel pipe 18 is provided with a drill bit 11 positioned at the end part of the hollow spiral drill rod 9, the diameter of the upper end face of the drill bit 11 is matched with the diameter of the hollow spiral drill rod 9, one side of the upper part of the rod body of the hollow spiral drill rod 9 is provided with a sliding groove 27 which is axially arranged along the hollow spiral drill rod 9 and is communicated with the inner cavity of the hollow spiral drill rod 9, the sliding groove 27 is internally sliding matched with a connecting pipe 7 which is communicated with the inner cavity of the sampling steel pipe 18 and is used for pushing the sampling steel pipe 18 to slide up and down, the other side of the upper part of the rod body of the hollow spiral drill rod 9 is provided with a fixed groove 23 which corresponds to the sliding groove 27 and is used for limiting and blocking the connecting pipe 7, the rod body of the sampling steel pipe 18 is sleeved with a compression spring 22, the rod body of the sampling steel pipe 18 is provided with a sampling hole 21 for collecting gas in soil, the connecting pipe 7 is connected with a radon the rod 15 through a sampling hose 28, both the radon detector 15 and a trolley driving motor 17 are connected with a battery pack 16, a construction hole 24 corresponding to the hollow spiral 9 is arranged on the chassis 26, and the diameter of the drilling rod 24 is larger than the drill bit 11.
In order to ensure the vertical stability of the hollow auger stem 9 in the drilling process, the upper portion of the stem body of the hollow auger stem 9 is rotationally connected with a bearing 5, the outer ring of the bearing 5 is fixedly connected with the sliding sleeve 3, the lower portion of the stem body of the hollow auger stem 9 is provided with a stabilizing ring 10, when the hollow auger stem 9 drills, the inner ring of the bearing 5 and the hollow auger stem 9 synchronously rotate, and slide downwards along with the sliding sleeve 3 synchronously, and the stabilizing ring 10 is stabilized, so that the hollow auger stem 9 can keep vertical stability.
In order to ensure that the collection of the gas in the soil is more accurate and effective, the lower part of the rod body of the sampling steel tube 18 is provided with a sealing hoop 19 positioned at the upper side of the sampling hole 21, the lower surface of the sealing hoop 19 and the upper surface of the opening at the lower end of the hollow spiral drill rod 9 are both provided with sealing gaskets 20, the sealing hoop 19 can completely seal the space between the sampling hole 21 and the sampling steel tube 18, and the sampling steel tube 18 and the surrounding soil are sealed, so that the aim of isolating the outside air is fulfilled, and the sampling accuracy is greatly improved.
When the soil radon concentration integrated rapid detection device for complex geology is adopted to detect soil radon concentration at a construction site, a tester inputs the position coordinates of a designed sampling point into an electronic handbook 12 and is connected with a GNSS receiver 1 through Bluetooth, a trolley is started to drive a motor 17 and operate to reach the position of the sampling point according to a screen and voice prompts of the electronic handbook 12, a drilling machine 4 is started to start tunneling operation, under the friction of a contact wheel 6 and a threaded rod 8, a sliding sleeve 3 connected with the drilling machine 4 slowly moves downwards along the sliding support 2, tunneling is stopped when a scribing display value of the sliding support 2 is in a standard required range, the drilling machine 4 is started to reversely drill for about 20cm, the drilling machine 4 is closed, a tester presses a connecting pipe 7 by hand along a sliding groove 27, the sealing hoop 19 is sealed with a sealing pad of a protruding part at the bottom of a hollow spiral drill rod 9 at the moment, the inside of underground soil is formed into a closed cavity, the sampling pipe 28 is tightly connected with the 7, the radon detector 15 is started to extract the soil gas through a sampling hole 21, the underground soil is restored to the position of the hollow drill rod 9, the sampling pipe is completely restored to the position of the hollow drill rod 9, and the sampling pipe is completely restored according to the result of the detection of the electronic pipe is recovered, and the electronic pipe is completely restored, the sampling pipe is completely moved, and the sampling pipe is moved to the position of the electronic pipe 12, and the sampling pipe is completely moved.
The utility model has not been described in detail in the prior art, and it is apparent to those skilled in the art that the utility model is not limited to the details of the above-described exemplary embodiments, but that the utility model can be embodied in other specific forms without departing from the spirit or essential characteristics thereof; the above-described embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (10)
1. A soil radon concentration short-term test integrated device for complicated geology includes the travelling car that comprises chassis (26), wheel (25) and dolly driving motor (17), its characterized in that: the detection mechanism comprises a driving mechanism, a hollow spiral drill rod (9), a radon detector (15), a battery pack (16), a sampling steel pipe (18) and a sampling hose (28), wherein the driving mechanism for driving the hollow spiral drill rod (9) to drill into soil is arranged on the mobile trolley, a sampling steel pipe (18) which is matched with the hollow spiral drill rod (9) in length and is of a hollow structure is arranged in the hollow spiral drill rod (9), an opening which is matched with the sampling steel pipe (18) is formed in the lower end of the hollow spiral drill rod (9), a drill bit (11) positioned at the end of the hollow spiral drill rod (9) is arranged at the lower end of the sampling steel pipe (18), a sliding groove (27) which is axially arranged on one side of the rod body of the hollow spiral drill rod (9) and is communicated with the inner cavity of the hollow spiral drill rod (9) is arranged in a matched mode, a connecting pipe (7) which is communicated with the inner cavity of the sampling steel pipe (18) in a sliding mode, the sliding mode is used for pushing the sampling steel pipe (18) up and down, a connecting pipe (21) which is arranged on the hollow spiral drill rod (9) to extend out of the soil is arranged at one side, a connecting pipe (21) is connected with the sampling hose (28) through the sampling hose (15), the radon detector (15) and the trolley driving motor (17) are connected with the battery pack (16).
2. The soil radon concentration rapid detection integrated device for complex geology of claim 1, wherein: the chassis (26) is provided with a trolley bracket (14) for storing the radon detector (15), the battery pack (16) and the trolley driving motor (17).
3. The soil radon concentration rapid detection integrated device for complex geology according to claim 2, wherein: the upper part of the trolley bracket (14) is provided with an electronic manual book (12) for inputting and recording coordinate information.
4. A soil radon concentration rapid detection integrated device for complex geology according to claim 3, characterized in that: the driving mechanism comprises a drilling machine (4), a sliding support (2), a sliding sleeve (3), a contact wheel (6) and a threaded rod (8), wherein the sliding support (2) is vertically arranged on the upper portion of a chassis (26), the threaded rod (8) which is parallel to the sliding support (2) is arranged on one side of the sliding support (2), the sliding sleeve (3) which can slide up and down along the sliding support (2) is arranged on the sliding support (2) in a sliding fit manner, a hollow spiral drill rod (9) is positioned in the sliding support (2) and is parallel to the sliding support (2), the contact wheel (6) which is in threaded fit with the threaded rod (8) is arranged on the rod body of the hollow spiral drill rod (9), and the drilling machine (4) which is used for driving the hollow spiral drill rod (9) to rotate is arranged on the sliding sleeve (3).
5. The integrated soil radon concentration rapid detection device for complex geology of claim 4, wherein: the upper part of the rod body of the hollow spiral drill rod (9) is rotationally connected with a bearing (5), the outer ring of the bearing (5) is fixedly connected with a sliding sleeve (3), and the lower part of the rod body of the hollow spiral drill rod (9) is provided with a stabilizing ring (10).
6. The integrated soil radon concentration rapid detection device for complex geology of claim 4, wherein: the upper part of the sliding support (2) is provided with a GNSS receiver (1) which corresponds to the hollow spiral drill rod (9) and is connected with the electronic handbook (12).
7. The integrated soil radon concentration rapid detection device for complex geology of claim 4, wherein: the other side of the upper part of the rod body of the hollow spiral drill rod (9) is provided with a fixed groove (23) which corresponds to the sliding groove (27) and is used for limiting and blocking the connecting pipe (7).
8. The integrated soil radon concentration rapid detection device for complex geology of claim 4, wherein: the rod body of the sampling steel tube (18) is sleeved with a compression spring (22).
9. The integrated soil radon concentration rapid detection device for complex geology of claim 8, wherein: the lower part of the rod body of the sampling steel pipe (18) is provided with a sealing hoop (19) positioned at the upper side of the sampling hole (21), and the lower surface of the sealing hoop (19) and the upper surface of the opening at the lower end of the hollow spiral drill rod (9) are both provided with sealing gaskets (20).
10. The integrated soil radon concentration rapid detection device for complex geology of claim 4, wherein: the sliding support (2) is provided with scales arranged along the axial direction of the sliding support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322004362.5U CN220381124U (en) | 2023-07-28 | 2023-07-28 | Soil radon concentration rapid detection integrated device for complex geology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322004362.5U CN220381124U (en) | 2023-07-28 | 2023-07-28 | Soil radon concentration rapid detection integrated device for complex geology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220381124U true CN220381124U (en) | 2024-01-23 |
Family
ID=89560860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322004362.5U Active CN220381124U (en) | 2023-07-28 | 2023-07-28 | Soil radon concentration rapid detection integrated device for complex geology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220381124U (en) |
-
2023
- 2023-07-28 CN CN202322004362.5U patent/CN220381124U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106596176B (en) | Water and soil integrated sampling method | |
| CN206161353U (en) | Instrument for water conservancy construction | |
| CN209724219U (en) | A kind of drilling equipment for engineering geologic investigation | |
| CN207215489U (en) | A kind of portable sampler of ground detection | |
| CN113418741B (en) | Mining tunnel survey measuring equipment and measuring method with accurate detection | |
| CN220381124U (en) | Soil radon concentration rapid detection integrated device for complex geology | |
| CN201010893Y (en) | Portable in-situ soil body sampler used for ultra-soft soil base | |
| CN113295451B (en) | Exploration sampling device suitable for under-consolidated soft land | |
| CN215448551U (en) | Geological survey is opened and is adopted spiral sampling device | |
| CN201940979U (en) | Multifunctional geologic hammer | |
| CN112302643A (en) | Multi-functional geological survey probing device | |
| CN210071375U (en) | Drilling type sampling device for geological exploration | |
| CN210105750U (en) | Underground nonmetal pipeline is surveyed and is used ground boring device | |
| CN210014927U (en) | Soil testing is with sampling device who has anticorrosion structure | |
| CN215178726U (en) | Geotechnical engineering reconnaissance sampler | |
| CN210774800U (en) | Sampling device for soil detection | |
| CN211504745U (en) | Soil sampling device for environmental detection | |
| CN218381729U (en) | A device for soil sampling detects | |
| CN206700996U (en) | Dust-proof corning machine | |
| CN113281102A (en) | A get whitewashed device for coal mine tunnel geology | |
| CN221465001U (en) | Portable soil gas collection system | |
| CN206091983U (en) | Highway ground sampling device | |
| CN218597119U (en) | Auxiliary drill rod detection equipment for determining position of blind well | |
| CN221745659U (en) | Tubular soil gas collection system | |
| CN2158083Y (en) | Permeability detecting meter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |