CN114441225A - Soil sampling device for mine restoration - Google Patents
Soil sampling device for mine restoration Download PDFInfo
- Publication number
- CN114441225A CN114441225A CN202210185707.9A CN202210185707A CN114441225A CN 114441225 A CN114441225 A CN 114441225A CN 202210185707 A CN202210185707 A CN 202210185707A CN 114441225 A CN114441225 A CN 114441225A
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- Prior art keywords
- electric telescopic
- fixed
- plate
- sampling
- bin
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/04—Devices for withdrawing samples in the solid state, e.g. by cutting
- G01N1/08—Devices for withdrawing samples in the solid state, e.g. by cutting involving an extracting tool, e.g. core bit
Abstract
The invention discloses a soil sampling device for mine restoration, which comprises a movable plate, wherein a containing box is fixed on the left side of the top of the movable plate through screws, a plurality of containing plates are placed in the containing box from top to bottom, a plurality of containing cavities are formed in the containing plates, a box cover is arranged on the top of the containing box, a sampling bin is arranged on the right side of the containing box, a lifting plate is connected in the sampling bin in a sliding manner, a rotary drill rod is fixed at the bottom of the lifting plate through a bearing, a transmission motor is fixed on the upper side surface of the lifting plate through bolts, an output shaft of the transmission motor is connected with the rotary drill rod, a sampling port is formed in the bottom of the sampling bin, the rotary drill rod extends into the sampling port, and electric telescopic rods c connected to the inner wall of the sampling bin are fixed at four corners of the top of the lifting plate so as to drive the lifting plate to move up and down; this a soil sampling device for mine is restoreed has the advantage of being convenient for remove, convenient sample, sample save.
Description
Technical Field
The invention relates to the technical field of mine restoration, in particular to a soil sampling device for mine restoration.
Background
With the continuous development of economy, people pay more and more attention to the degree of environmental protection, a plurality of mines exist in China, the mines are abandoned after being mined, the abandoned mines have the problems of heavy metal pollution, mine acid drainage pollution and the like, so that the mines need to be repaired, the mine pollution repair is limited by factors such as landform, climate characteristics, hydrological conditions, soil physical and chemical biological characteristics, surface soil conditions, potential pollution and the like, and therefore, the selection of the repair technology and the implementation scheme needs to consider the influence of each factor.
And present sampling equipment can only stimulate through the manpower at the in-process that removes, removes comparatively troublesome, accomplishes the back at the process of sample, and inconvenient soil after the sample etc. takes out, through once taking a sample back moreover, because soil is inconvenient takes out to cause work efficiency's decline, and accomplish the back at the sample, the inconvenient save of soil of sample.
Disclosure of Invention
The invention aims to provide a soil sampling device for mine restoration, which has the advantages of convenience in moving, sampling and storage and solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a soil sampling device for mine restoration comprises a movable plate, wherein a containing box is fixed on the left side of the top of the movable plate through screws, a plurality of containing plates are placed in the containing box from top to bottom, a plurality of containing cavities are formed in the containing plates, a box cover is arranged on the top of the containing box, a sampling bin is arranged on the right side of the containing box, a lifting plate is connected in the sampling bin in a sliding mode, a rotary drill rod is fixed at the bottom of the lifting plate through a bearing, a transmission motor is fixed on the upper side face of the lifting plate through bolts, an output shaft of the transmission motor is connected with the rotary drill rod, a sampling port is formed in the bottom of the sampling bin, the rotary drill rod extends into the sampling port, and electric telescopic rods c connected to the inner wall of the sampling bin are fixed at four corners of the top of the lifting plate so as to drive the lifting plate to move up and down;
the right side of the sampling bin is provided with a control box, the top of the control box is provided with a detection box, the front side and the rear side of the detection box are respectively provided with a detection plate, the front side and the right side of the detection box are respectively provided with a camera, the front side of the right side of the control box is fixedly provided with a radio through bolts, the middle of the right side of the control box is fixedly provided with a touch screen through bolts, the rear side of the right side of the control box is fixedly provided with a loudspeaker through bolts, the inside of the control box is respectively fixedly provided with a controller, a positioner, a network interface and a storage battery through bolts, the middle of the right side of the movable plate is connected with two connecting ropes, the other ends of the connecting ropes are respectively connected with one end of a handle, a pressure sensor is arranged in the handle, the pressure sensors are fixedly arranged on the handle through bolts, four corners of the bottom of the movable plate are fixedly provided with electric telescopic rods b through bolts, and the bottom of the electric telescopic rods b are respectively fixedly provided with movable wheels, the right-hand motor that is provided with of movable plate downside, the side all is provided with electric telescopic handle a of fixing on the movable plate on the motor, the motor below is provided with the transmission shaft, the transmission shaft both ends are connected with the removal wheel respectively, the motor passes through the drive belt and connects the transmission shaft to the drive removes the wheel and rotates.
Preferably, each storage plate is provided with a clamping groove at the outer edge of the top, the bottom of the storage plate is provided with a clamping frame which can be inserted into the clamping groove, and a rubber layer fixed on the storage plate is arranged inside the clamping frame.
Preferably, the front side surface of the sampling bin is connected with a bin door through a hinge, and the sampling bin and the bin door are correspondingly provided with openings.
Preferably, the front side surface of the control box is fixed with a knob and a power interface through bolts.
Preferably, the surface of the pressure sensor is provided with a layer of rubber.
Preferably, a plurality of sensors are arranged on the detection plate, and the sensors include but are not limited to an air sensor, a PM2.5 sensor, a humidity sensor and a toxic gas sensor.
Preferably, the radio type is: i6, electric telescopic handle a, electric telescopic handle b and electric telescopic handle c model are: HTKC-75, wherein the pressure sensor is of the type: RTNC3/22t, the locator model is: the GPS303, the controller model is: SPC-8000.
Preferably, the power interface is connected with the power supply and the storage battery through cables, the storage battery is connected with the controller and the knob through cables, and the controller is respectively connected with the detection board, the camera, the loudspeaker, the radio, the pressure sensor, the touch screen, the electric telescopic rod a, the electric telescopic rod b, the electric telescopic rod c, the motor, the positioner, the network interface and the transmission motor through cables.
Compared with the prior art, the invention has the following beneficial effects:
1. this a soil sampling device for mine restoration accomodates the material of sample through accomodating the chamber, the material of conveniently taking a sample is accomodate, connect through draw-in groove and draw-in card frame, and seal through the rubber layer and accomodate the chamber, the material of conveniently taking a sample, take out the material through the door, the material of conveniently taking a sample, carry out rotatory sample through rotatory drilling rod, the convenient sample, provide rotatory power and the power of going up and down through driving motor and electric telescopic handle c, thereby guarantee the sample, it reciprocates to drive rotatory drilling rod through the movable plate, the reciprocating of rotatory drilling rod has been made things convenient for.
2. This a soil sampling device for mine restoration adopts camera and pick-up plate to detect the data in mine, make things convenient for the detection of mine data, collect and broadcast through radio and speaker, conveniently carry out long-range voice interaction, carry out holistic control through the controller, make things convenient for holistic control, carry out the storage of electric energy through the battery, the convenience is supplying power for equipment, adopt network interface to carry out connecting network, make things convenient for the transmission of information, adopt the locator to fix a position, make things convenient for remote location, adopt pressure sensor to detect pressure data, conveniently remove through pressure control, it rotates to drive the removal wheel through motor and transmission shaft, convenient the removal, carry out the height-adjusting through electric telescopic handle an and electric telescopic handle b, make things convenient for the altitude mixture control of movable plate.
Drawings
FIG. 1 is a schematic overall structure diagram of a soil sampling device for mine restoration according to the present invention;
FIG. 2 is a schematic top view of a receiving plate of a soil sampling device for mine restoration according to the present invention;
FIG. 3 is a schematic bottom view of a receiving plate of the soil sampling device for mine restoration according to the present invention;
FIG. 4 is a schematic view of the inside of a control box of a soil sampling device for mine restoration according to the present invention;
fig. 5 is a schematic diagram of the internal structure of a sampling bin of the soil sampling device for mine restoration.
The figures are labeled as follows: the device comprises a1 moving plate, a 2 storage box, a 3 box cover, a 4-bin door, a 5 sampling bin, a 6 detection plate, a 7 camera, an 8 touch screen, a 9 detection box, a 10 control box, a 11 loudspeaker, a 12 radio, a 13 pressure sensor, a 14 handle, a 16 connecting rope, a17 electric telescopic rod a, an 18 motor, a 19 transmission shaft, a 20 moving wheel, a 21 electric telescopic rod b, a 22 clamping groove, a 23 storage cavity, a 24 storage plate, a 25 rubber layer, a 26 clamping frame, a 27 controller, a 28 positioner, a 29 storage battery, a 30 network interface, a 31 rotating drill rod, a 32 electric telescopic rod c, a 33 transmission motor and a 34 lifting plate.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Example 1:
referring to fig. 1-5, a soil sampling device for mine restoration comprises a movable plate 1, a receiving box 2 is fixed on the left side of the top of the movable plate 1 through screws, a plurality of receiving plates 24 are placed in the receiving box 2 up and down, the receiving plates 24 are provided with a plurality of receiving cavities 23, a clamping groove 22 is formed in the outer edge of the top of each receiving plate 24, a clamping frame 26 capable of being inserted in the clamping groove 22 is arranged at the bottom of each receiving plate 24, a rubber layer 25 fixed on the receiving plate 24 is arranged in each clamping frame 26, a box cover 3 is arranged at the top of each receiving box 2, a sampling bin 5 is arranged on the right side of each receiving box 2, a lifting plate 34 is connected in a sliding mode in each sampling bin 5, a rotary drill rod 31 is fixed at the bottom of each lifting plate 34 through a bearing, a transmission motor 33 is fixed on the upper side face of each lifting plate 34 through bolts, an output shaft of the transmission motor 33 is connected with the rotary drill rod 31, a sampling port is formed in the bottom of each sampling bin 5, the rotary drill rod 31 extends into the sampling opening, electric telescopic rods c32 connected to the inner wall of the sampling bin 5 are fixed at four corners of the top of the lifting plate 34 to drive the lifting plate 34 to move up and down, the front side surface of the sampling bin 5 is connected with a bin gate 4 through a hinge, and the sampling bin 5 and the bin gate 4 are correspondingly provided with openings;
it is specific, accomodate the material of sample through accomodating chamber 23, conveniently take a sample the material and accomodate, connect through draw-in groove 22 and card frame 26, and seal through rubber layer 25 and accomodate chamber 23, conveniently take a sample the material and accomodate, take out the material through door 4, conveniently take a sample taking out of material, carry out rotatory sample through rotatory drilling rod 31, conveniently take a sample, provide rotatory power and the power that goes up and down through driving motor 33 and electric telescopic handle c32, thereby guarantee the sample, it reciprocates to drive rotatory drilling rod 31 through movable plate 1, the reciprocating of rotatory drilling rod 31 has been made things convenient for.
Example 2:
referring to fig. 1-5, a soil sampling device for mine restoration, including sample storehouse 5, sample storehouse 5 right side is provided with control box 10, the control box 10 leading flank is fixed with knob and power source through the bolt, the control box 10 top is provided with detection box 9, the side all is provided with pick-up plate 6 around detection box 9, be provided with a plurality of sensors on the pick-up plate 6, the sensor includes but is not limited to air sensor, PM2.5 sensor, humidity transducer and poison gas sensor, side and right flank all are provided with camera 7 around the detection box 9, there is radio 12 in the control box 10 right flank front through the bolt fastening, the radio 12 model is: i6, there is touch screen 8 through the bolt fastening in the middle of the control box 10 right side, and there is speaker 11 through the bolt fastening at control box 10 right side rear, and inside being fixed with controller 27, locator 28, network interface 30 and battery 29 respectively through the bolt fastening of control box 10, and locator 28 model is: GPS303, controller 27 model: SPC-8000, moving plate 1 right side intermediate junction has two to connect rope 16, connects the rope 16 other end and all connects with the one end of handle 14, is provided with pressure sensor 13 in the handle 14, and pressure sensor 13 model is: RTNC3/22t, pressure sensor 13 surface is provided with one deck rubber, pressure sensor 13 passes through the bolt fastening on handle 14, all there is electric telescopic handle b21 at 1 bottom four corners of movable plate through the bolt fastening, electric telescopic handle b21 bottom all is fixed with removal wheel 20, the right-hand motor 18 that is provided with of 1 downside of movable plate, the side all is provided with electric telescopic handle a17 fixed on movable plate 1 on the motor 18, electric telescopic handle a17, electric telescopic handle b21 and electric telescopic handle c32 model are: the device comprises an HTKC-75, wherein a transmission shaft 19 is arranged below a motor 18, two ends of the transmission shaft 19 are respectively connected with a movable wheel 20, the motor 18 is connected with the transmission shaft 19 through a transmission belt so as to drive the movable wheel 20 to rotate, a power supply interface is connected with a power supply and a storage battery 29 through cables, the storage battery 29 is connected with a controller 27 and a knob through cables, and the controller 27 is respectively connected with a detection board 6, a camera 7, a loudspeaker 11, a radio 12, a pressure sensor 13, a touch screen 8, an electric telescopic rod a17, an electric telescopic rod b21, an electric telescopic rod c32, the motor 18, a positioner 28, a network interface 30 and a transmission motor 33 through cables;
it is specific, adopt camera 7 and pick-up plate 6 to detect the data in mine, make things convenient for the detection of mine data, collect and play through radio 12 and speaker 11, conveniently carry out long-range pronunciation mutual, carry out holistic control through controller 27, make things convenient for holistic control, carry out the storage of electric energy through battery 29, it is convenient being for the equipment power supply, adopt network interface 30 to carry out the connecting network, make things convenient for the transmission of information, adopt locator 28 to fix a position, make things convenient for remote location, adopt pressure sensor 13 to detect pressure data, conveniently remove through pressure control, drive through motor 18 and transmission shaft 19 and remove wheel 20 and rotate, convenient the removal, carry out the height-adjusting through electric telescopic handle a17 and electric telescopic handle b21, make things convenient for the altitude mixture control of movable plate 1.
The working principle is as follows: the invention relates to a soil sampling device for mine restoration, a power interface is connected with a power supply, a storage battery 29 starts to store electric energy, when the soil sampling device is used, the power interface is disconnected from the power supply, a person holds a handle 14 with hands and then presses a pressure sensor 13, a controller 27 controls a motor 18 to work according to the pressure value change of the pressure sensor 13, the motor 18 drives a moving wheel 20 to move through a transmission shaft 19, the moving wheel 20 drives a moving plate 1 to move through an electric telescopic rod b21 so as to move, when the specified position is reached, the pressure sensor 13 is not pressed, the controller 27 turns off the motor 18 at the moment, the moving plate 1 stops moving, when the moving plate 1 is inclined, the electric telescopic rod b21 needing to be controlled is selected through a touch screen 8, then a signal is sent through a knob, the controller 27 controls an electric telescopic rod b21 to lift so as to adjust the moving plate 1, in the adjusting process, the electric telescopic rod a17 is adjusted along with the up-and-down adjustment of the electric telescopic rod b21 on the right side of the moving plate 1, so as to ensure the transmission of the motor 18 and the moving wheel 20, when the adjustment is completed, a sampling signal is sent out through the touch screen 8, the controller 27 controls the operation of the transmission motor 33 and the electric telescopic rod c32, the transmission motor 33 drives the rotating drill rod 31 to rotate, the electric telescopic rod c32 drives the moving plate 1 to move downwards, the moving plate 1 drives the rotating drill rod 31 to move downwards, so that the rotating drill rod 31 is drilled into the mine for sampling, the sampled soil enters the sampling bin 5 through the rotating drill rod 31, when the sampling is completed, a sampling stopping signal is sent out through the touch screen 8, the controller 27 controls the electric telescopic rod c32 to be retracted, the rotating drill rod 31 returns to the original position, after the electric reset is completed, the controller 27 controls the sensing motor 18 to stop rotating, at this time, the storage plate 24 is taken out, then the door 4 is opened to sample the soil and place the soil into the containing cavity 23, then the containing plate 24 is placed into the containing box 2, the box cover 3 is pressed down on the containing plate 24, after the first layer of containing plate 24 is contained, the second layer of containing plate 24 is taken out to contain the sample, the second layer of containing plate 24 is clamped in the clamping groove 22 of the first layer of containing plate 24 through the clamping frame 26, so that the rubber layer 25 is attached to the first layer of containing plate 24, the soil can be contained according to the process, in the moving process, the sensor on the detecting plate 6 detects the data on the mine, the camera 7 records the image information, the detected data and the shot image information are transmitted through the network interface 30, and the positioner 28 performs real-time positioning and records the moving route.
While there have been shown and described the fundamental principles and essential features of the invention and advantages thereof, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof; the present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention 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, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (8)
1. The utility model provides a be used for prosthetic soil sampling device in mine which characterized in that: the movable sampling device comprises a movable plate (1), wherein a containing box (2) is fixed on the left side of the top of the movable plate (1) through screws, a plurality of containing plates (24) are placed in the containing box (2) from top to bottom, a plurality of containing cavities (23) are formed in the containing plates (24), a box cover (3) is arranged on the top of the containing box (2), a sampling bin (5) is arranged on the right side of the containing box (2), a lifting plate (34) is connected in the sampling bin (5) in a sliding mode, a rotary drill rod (31) is fixed at the bottom of the lifting plate (34) through a bearing, a transmission motor (33) is fixed on the upper side of the lifting plate (34) through bolts, an output shaft of the transmission motor (33) is connected with the rotary drill rod (31), a sampling opening is formed in the bottom of the sampling bin (5), the rotary drill rod (31) extends into the sampling opening, electric telescopic rods (32) connected to the inner wall of the sampling bin (5) are fixed at four corners of the top of the lifting plate (34), so as to drive the lifting plate (34) to move up and down;
the portable electronic device is characterized in that a control box (10) is arranged on the right side of the sampling bin (5), a detection box (9) is arranged at the top of the control box (10), detection plates (6) are arranged on the front side and the rear side of the detection box (9), cameras (7) are arranged on the front side and the rear side of the detection box (9), a radio (12) is fixed in front of the right side of the control box (10) through bolts, a touch screen (8) is fixed in the middle of the right side of the control box (10) through bolts, a loudspeaker (11) is fixed in rear of the right side of the control box (10) through bolts, a controller (27), a positioner (28), a network interface (30) and a storage battery (29) are respectively fixed in the control box (10) through bolts, two connecting ropes (16) are connected in the middle of the right side of the movable plate (1), and one end of a handle (14) is connected to the other end of each connecting rope (16), be provided with pressure sensor (13) in handle (14), pressure sensor (13) pass through the bolt fastening on handle (14), movable plate (1) bottom four corners all is fixed with electric telescopic handle b (21) through the bolt fastening, electric telescopic handle b (21) bottom all is fixed with removes wheel (20), the right-hand motor (18) that is provided with of movable plate (1) downside, the side all is provided with electric telescopic handle a (17) of fixing on movable plate (1) on motor (18), motor (18) below is provided with transmission shaft (19), transmission shaft (19) both ends are connected with removal wheel (20) respectively, transmission shaft (19) are connected through the drive belt in motor (18) to drive removes wheel (20) and rotates.
2. A soil sampling device for mine rehabilitation as claimed in claim 1, wherein: each storage plate (24) is provided with a clamping groove (22) at the outer edge of the top, a clamping frame (26) capable of being inserted into the clamping groove (22) is arranged at the bottom of each storage plate (24), and a rubber layer (25) fixed on the storage plate (24) is arranged inside each clamping frame (26).
3. A soil sampling device for mine rehabilitation as claimed in claim 1, wherein: the sampling bin (5) is characterized in that the front side surface of the sampling bin (5) is connected with a bin door (4) through a hinge, and the sampling bin (5) and the bin door (4) are correspondingly provided with openings.
4. A soil sampling device for mine rehabilitation as claimed in claim 1, wherein: the front side surface of the control box (10) is fixed with a knob and a power interface through bolts.
5. A soil sampling device for mine rehabilitation as claimed in claim 1, wherein: the surface of the pressure sensor (13) is provided with a layer of rubber.
6. A soil sampling device for mine rehabilitation as claimed in claim 1, wherein: the detection plate (6) is provided with a plurality of sensors, and the sensors comprise but are not limited to an air sensor, a PM2.5 sensor, a humidity sensor and a toxic gas sensor.
7. A soil sampling device for mine rehabilitation as claimed in claim 1, wherein: the type of the radio (12) is as follows: i6, electric telescopic handle a (17), electric telescopic handle b (21) and electric telescopic handle c (32) model are: HTKC-75, wherein the pressure sensor (13) is of the type: RTNC3/22t, the locator (28) model being: GPS303, the type of the controller (27) is: SPC-8000.
8. A soil sampling device for mine restoration as claimed in claim 4, wherein: the power interface is connected with a power supply and a storage battery (29) through cables, the storage battery (29) is connected with a controller (27) and a knob through cables, and the controller (27) is respectively connected with a detection plate (6), a camera (7), a loudspeaker (11), a radio (12), a pressure sensor (13), a touch screen (8), an electric telescopic rod a (17), an electric telescopic rod b (21), an electric telescopic rod c (32), a motor (18), a positioner (28), a network interface (30) and a transmission motor (33) through cables.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210185707.9A CN114441225A (en) | 2022-02-28 | 2022-02-28 | Soil sampling device for mine restoration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210185707.9A CN114441225A (en) | 2022-02-28 | 2022-02-28 | Soil sampling device for mine restoration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114441225A true CN114441225A (en) | 2022-05-06 |
Family
ID=81372864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210185707.9A Withdrawn CN114441225A (en) | 2022-02-28 | 2022-02-28 | Soil sampling device for mine restoration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114441225A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116625732A (en) * | 2023-06-06 | 2023-08-22 | 山东慧创信息科技有限公司 | Soil sampling device and sampling method for waste mine barren mountain restoration |
-
2022
- 2022-02-28 CN CN202210185707.9A patent/CN114441225A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116625732A (en) * | 2023-06-06 | 2023-08-22 | 山东慧创信息科技有限公司 | Soil sampling device and sampling method for waste mine barren mountain restoration |
| CN116625732B (en) * | 2023-06-06 | 2023-10-27 | 山东慧创信息科技有限公司 | Soil sampling device and sampling method for waste mine barren mountain restoration |
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Application publication date: 20220506 |
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| WW01 | Invention patent application withdrawn after publication |