CN113107478A - Shallow fluid sampling device and sampling method - Google Patents
Shallow fluid sampling device and sampling method Download PDFInfo
- Publication number
- CN113107478A CN113107478A CN202110342300.8A CN202110342300A CN113107478A CN 113107478 A CN113107478 A CN 113107478A CN 202110342300 A CN202110342300 A CN 202110342300A CN 113107478 A CN113107478 A CN 113107478A
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- wall
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- soil sample
- sealing
- drill bit
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/081—Obtaining fluid samples or testing fluids, in boreholes or wells with down-hole means for trapping a fluid sample
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B1/00—Percussion drilling
- E21B1/02—Surface drives for drop hammers or percussion drilling, e.g. with a cable
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/02—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells by mechanically taking samples of the soil
Abstract
A shallow fluid sampling device and a sampling method comprise a drilling part, a soil sample collecting part and a fluid collecting part; the soil sample collecting part and the fluid collecting part are both arranged in the drilling part; the drilling portion comprises a drill rod and a drill bit; the inner wall of the upper end of the drill bit and the outer wall of the lower end of the drill rod form threaded fit; the drill bit is hollow, and the lower end of the drill bit is conical; the soil sample collecting part comprises an impactor and a soil sample collecting mechanism; the impactor is arranged at the upper end of the soil sample collecting mechanism, and the soil sample collecting mechanism is arranged in the drilling part. The invention improves the efficiency and the precision of shallow fluid sampling.
Description
Technical Field
The invention relates to a sampling device and a sampling method, in particular to a sampling device and a sampling method for collecting shallow fluid, and belongs to the technical field of shallow geological sampling.
Background
In order to comprehensively understand the geological structure, underground water or underground gas is collected while underground soil samples are collected, and the content and transfer condition of certain elements are determined by analyzing the underground water and the gas; at present, two common collection modes for underground water and gas are provided, one mode is that a hole with a larger diameter is drilled through a shallow drill, then a target layer is separated through clay or cement, and then a detection instrument is put into the hole to collect underground in-situ water or in-situ gas, the method has larger early investment, is inconvenient for arranging the drilled holes in a large area, and has the advantages that the sample mixing is avoided, and the dynamic change of underground fluid can be monitored in real time; the other method is to insert the capillary probe into the soil layer for a certain depth and then collect the in-situ fluid, and the method has the advantages of high sampling efficiency, limited sampling depth and small sample amount, and is not beneficial to analysis; therefore, a sampling device capable of efficiently and accurately acquiring data is needed to ensure the smooth geological exploration operation.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a shallow fluid sampling device and a sampling method, which can ensure the precision of acquisition while ensuring high-efficiency acquisition operation.
The problems of the invention are solved by the following technical scheme:
a shallow fluid sampling device comprises a drilling part, a soil sample collecting part and a fluid collecting part;
the soil sample collecting part and the fluid collecting part are both arranged in the drilling part;
the drilling portion comprises a drill rod and a drill bit; the inner wall of the upper end of the drill bit and the outer wall of the lower end of the drill rod form threaded fit; a second limiting step is arranged at the upper part of the inner wall of the drill rod, and the inner diameter of the inner wall of the drill rod at the upper end of the second limiting step is larger than that of the inner wall of the drill rod at the lower end of the second limiting step; the drill bit is hollow, and the lower end of the drill bit is conical; the inner wall of the drill bit is provided with a first limiting step, and the inner diameter of the inner wall of the drill bit at the upper end of the first limiting step is larger than that of the inner wall of the drill bit at the lower end of the first limiting step;
the soil sample collecting part comprises an impactor and a soil sample collecting mechanism; the impactor is arranged at the upper end of the soil sample collecting mechanism, and the soil sample collecting mechanism is arranged in the drilling part;
the fluid collecting part comprises an air exhaust pipeline, a vacuum pump, an upper self-sealing joint, a central pipe, a lower self-sealing joint, a reducing joint, a fluid inner pipe and a one-way negative pressure filter valve;
the upper end port of the air exhaust pipeline is connected with a vacuum pump, and the inner wall of the lower end of the air exhaust pipeline is in threaded fit connection with the outer wall of the upper end of the upper self-sealing joint; the inner wall of the lower end of the upper self-sealing joint is in threaded fit connection with the outer wall of the upper end of the central tube; the inner wall of the lower end of the central tube and the outer wall of the upper end of the lower self-sealing joint form threaded fit connection; the outer wall of the lower end of the lower self-sealing joint is in threaded fit connection with the inner wall of the upper end of the reducer union; the outer wall of the lower end of the reducing joint is in threaded fit connection with the inner wall of the upper end of the fluid inner pipe; the outer diameter of the fluid inner pipe is smaller than the inner diameter of the inner wall of the lower end of the drill rod; the lower end face of the fluid inner pipe is pressed on the first limiting step; the upper end of the outer wall of the one-way negative pressure filter valve is in threaded fit connection with the lower end of the inner wall of the fluid inner pipe.
In the shallow fluid sampling device, the soil sample collecting mechanism comprises a hanger, a connecting rod and a soil sample inner tube;
the outer wall of the lower end of the impactor is in threaded fit connection with the inner wall of the upper end of the drill rod; the sitting and hanging device comprises a hollow disc and a sitting and hanging barrel; the inner diameter of the sitting and hanging barrel is equal to the diameter of the inner hole of the hollow disc, and the outer diameter of the sitting and hanging barrel is smaller than the diameter of the circumference of the outer wall of the hollow disc; the upper end of the sitting and hanging barrel is vertically connected to the round hole of the lower end face of the hollow disc; the circumferential diameter of the outer wall of the hollow disc is equal to the inner diameter of the inner wall of the drill rod at the upper end of the second limiting step, and the lower end face of the hollow disc is in contact pressure with the second limiting step; the connecting rod is shaped as a round tube with a thin upper part and a thick lower part; the outer wall of the upper end of the connecting rod is in threaded fit connection with the inner wall of the lower end of the sitting and hanging barrel; the inner tube of the soil sample is cylindrical, and the inner wall of the upper end of the inner tube of the soil sample is in threaded fit connection with the outer wall of the lower end of the connecting rod; the inner diameter of the connecting rod is equal to the inner diameter of the inner wall of the drill bit at the lower end of the first limiting step, and the outer diameter of the soil sample inner tube is smaller than the inner diameter of the inner wall at the lower end of the drill rod; the lower end face of the soil sample inner tube is pressed on the first limiting step.
The shallow fluid sampling device is additionally provided with a sealing part; the sealing part comprises an inflation joint, a sealing air bag, an inflation tube and an inflation piece; the sealed air bag is a spherical hollow air bag, and the central tube vertically penetrates through the spherical center of the sealed air bag; the sealed air bag is provided with an inflation joint which is communicated with the inner periphery and the outer periphery of the sealed air bag; the inflation piece is connected with an air inlet of the inflation connector through an inflation pipe.
In the shallow fluid sampling device, the fluid inner tube is a circular tube made of transparent PC material.
A method of sampling a shallow fluid using the shallow fluid sampling apparatus of any one of claims 1 to 4, comprising the steps of:
s1, arranging a soil sample collecting part into a drilling part, then starting an impactor, applying axial impact force with a certain frequency to a drill rod by the impactor downwards, enabling a drill bit below the drill rod to drill downwards, enabling a soil sample on a drilling path of the drill bit to enter a soil sample collecting mechanism, and lifting the whole soil sample collecting mechanism out of the drill rod through a hanger after the drill bit reaches a specified depth;
s2, after the fluid collecting part and the sealing part are assembled, the fluid collecting part and the sealing part are placed into the drilling part, and the sealing air bag is inflated through the inflating piece, so that the sealing air bag is expanded until the sealing air bag blocks the annular space at the upper end of the drill rod; then starting a vacuum pump to enable the interior of the fluid inner tube to form a vacuum state, so that the fluid enters the fluid inner tube, and after the fluid is collected, lifting out the fluid collecting part and the sealing part; and then placing the soil sample collection part into the drilling part, continuously and deeply digging and sampling downwards, after the soil sample collection of the next layer of geology is finished, placing the fluid collection part and the sealing part again for fluid sampling, lifting out the collection part in the drilling part until the soil samples and the fluid samples of all the target geological layers are completely collected, and then lifting out the drilling part.
The invention effectively improves the working efficiency and precision of underground soil sample and fluid sample collection, ensures the quality of geological exploration operation and avoids the problems of low efficiency and high cost caused by the traditional underground fluid collection method by the alternate use of the soil sample collection part and the fluid collection part in cooperation with the drilling part.
Drawings
FIG. 1 is a schematic view of a soil sample collection part according to the present invention;
fig. 2 is a schematic view of the structure of the fluid collection portion of the present invention.
The list of labels in the figure is: 1. the device comprises a drilling part, 1-1 drill rod, 1-2 drill bits, 1-3 first limiting steps, 1-4 second limiting steps, 2 soil sample collecting part, 2-1 impactor, 2-2 hanger, 2-3 connecting rods, 2-4 soil sample inner tubes, 3 fluid collecting part, 3-1 air exhaust pipeline, 3-2 vacuum pump, 3-3 upper self-sealing joint, 3-4 central tube, 3-5 lower self-sealing joint, 3-6 reducing joint, 3-7 fluid inner tubes, 3-8 one-way negative pressure filter valve, 4 sealing part, 4-1 inflation joint, 4-2 sealing air bag, 4-3 inflation tube and 4-4 inflation piece.
Detailed Description
Referring to fig. 1 and 2, the present invention includes a drilling portion 1, a soil sample collection portion 2, and a fluid collection portion 3; the drilling part 1 is used for drilling underground, so that the soil sample collecting part 2 and the fluid collecting part 3 are arranged on the ground for collection;
the soil sample collecting part 2 and the fluid collecting part 3 are both arranged in the drilling part 1;
the drilling part 1 comprises a drill rod 1-1 and a drill bit 1-2; the inner wall of the upper end of the drill bit 1-2 is in threaded fit with the outer wall of the lower end of the drill rod 1-1; a second limiting step 1-4 is arranged at the upper part of the inner wall of the drill rod 1-1, and the inner diameter of the inner wall of the drill rod 1-1 at the upper end of the second limiting step 1-4 is larger than that of the inner wall of the drill rod 1-1 at the lower end of the second limiting step 1-4; the drill bit 1-2 is hollow, and the lower end of the drill bit 1-2 is conical; the inner wall of the drill bit 1-2 is provided with a first limit step 1-3, and the inner diameter of the inner wall of the drill bit 1-2 at the upper end of the first limit step 1-3 is larger than that of the inner wall of the drill bit 1-2 at the lower end of the first limit step 1-3; the tapered drill bit 1-2 is able to more easily drill into the earth formation.
The soil sample collecting part 2 comprises an impactor 2-1 and a soil sample collecting mechanism; the impactor 2-1 is arranged at the upper end of the soil sample collecting mechanism, and the soil sample collecting mechanism is arranged in the drilling part 1; the impactor 2-1 applies downward axial impact forces of a certain frequency, which are transmitted to the drill bit 1-2 through the drill rod 1-1, thereby causing the drill bit 1-2 to drill deep into the ground.
The fluid collecting part 3 comprises an air exhaust pipeline 3-1, a vacuum pump 3-2, an upper self-sealing joint 3-3, a central pipe 3-4, a lower self-sealing joint 3-5, a reducer union 3-6, a fluid inner pipe 3-7 and a one-way negative pressure filter valve 3-8;
the upper end port of the air exhaust pipeline 3-1 is connected with a vacuum pump 3-2, and the inner wall of the lower end of the air exhaust pipeline 3-1 is in threaded fit connection with the outer wall of the upper end of the upper self-sealing joint 3-3; the inner wall of the lower end of the upper self-sealing joint 3-3 is in threaded fit connection with the outer wall of the upper end of the central tube 3-4; the inner wall of the lower end of the central tube 3-4 is in threaded fit connection with the outer wall of the upper end of the lower self-sealing joint 3-5; the outer wall of the lower end of the lower self-sealing joint 3-5 is in threaded fit connection with the inner wall of the upper end of the reducer union 3-6; the outer wall of the lower end of the reducing joint 3-6 is in threaded fit connection with the inner wall of the upper end of the fluid inner pipe 3-7; the outer diameter of the fluid inner pipe 3-7 is smaller than the inner diameter of the inner wall of the lower end of the drill rod 1-1; the lower end face of the fluid inner pipe 3-7 is pressed on the first limiting step 1-3; the upper end of the outer wall of the one-way negative pressure filter valve 3-8 is in threaded fit connection with the lower end of the inner wall of the fluid inner pipe 3-7; by starting the vacuum pump 3-2, negative pressure is generated in the fluid inner tube 3-7, and the fluid at the bottom end is sucked into the fluid inner tube 3-7, so that the purpose of collecting a fluid sample is achieved.
The soil sample collecting mechanism comprises a sitting hanger 2-2, a connecting rod 2-3 and a soil sample inner tube 2-4;
the outer wall of the lower end of the impactor 2-1 is in threaded fit connection with the inner wall of the upper end of the drill rod 1-1; the sitting and hanging device 2-2 comprises a hollow disc and a sitting and hanging barrel; the inner diameter of the sitting and hanging barrel is equal to the diameter of the inner hole of the hollow disc, and the outer diameter of the sitting and hanging barrel is smaller than the diameter of the circumference of the outer wall of the hollow disc; the upper end of the sitting and hanging barrel is vertically connected to the round hole of the lower end face of the hollow disc; the circumferential diameter of the outer wall of the hollow disc is equal to the inner diameter of the inner wall of the drill rod 1-1 at the upper end of the second limiting step 1-4, and the lower end face of the hollow disc is in contact pressure with the second limiting step 1-4; the connecting rod 2-3 is a round tube with a thin upper part and a thick lower part; the outer wall of the upper end of the connecting rod 2-3 is in threaded fit connection with the inner wall of the lower end of the sitting and hanging barrel; the soil sample inner tube 2-4 is cylindrical, and the inner wall of the upper end of the soil sample inner tube 2-4 is in threaded fit connection with the outer wall of the lower end of the connecting rod 2-3; the inner diameter of the connecting rod 2-3 is equal to the inner diameter of the inner wall of the drill bit 1-2 at the lower end of the first limiting step 1-3, and the outer diameter of the soil sample inner tube 2-4 is smaller than the inner diameter of the inner wall at the lower end of the drill rod 1-1; the lower end face of the soil sample inner tube 2-4 is pressed on the first limiting step 1-3; after the soil sample enters the soil sample inner tube 2-4, the whole soil sample collecting mechanism can be lifted out of the ground only by lifting the sitting hanger 2-2, so that the operation steps are greatly simplified.
In order to avoid the influence of air leakage on the negative pressure in the fluid inner tubes 3-7, a sealing part 4 is additionally arranged; the sealing part 4 comprises an inflation connector 4-1, a sealing air bag 4-2, an inflation tube 4-3 and an inflation piece 4-4; the sealed air bag 4-2 is a spherical hollow air bag, and the central tube 3-4 vertically penetrates through the spherical center of the sealed air bag 4-2; the sealed air bag 4-2 is provided with an inflation connector 4-1, and the inflation connector 4-1 is communicated with the inside and the outside of the sealed air bag 4-2; the inflation piece 4-4 is connected with an air inlet of the inflation joint 4-1 through an inflation tube 4-3; after the fluid collecting part 3 is arranged, the inflating part 4-4 is started to inflate the sealing air bag 4-2, so that the sealing air bag 4-2 plugs the cavity of the drill rod 1-1, and the air tightness of the drill rod is greatly improved.
The fluid inner pipe 3-7 is a round pipe made of transparent PC materials, and the transparent fluid inner pipe 3-7 can help workers to visually observe the fluid condition inside the fluid inner pipe.
The sampling device comprises the following operation steps:
s1, arranging a soil sample collecting part 2 into a drilling part 1, then starting an impactor 2-1, applying axial impact force with a certain frequency to a drill rod 1-1 downwards by the impactor 2-1, enabling a drill bit 1-2 below the drill rod 1-1 to drill downwards, enabling a soil sample on a drilling path of the drill bit 1-2 to enter a soil sample collecting mechanism, and after the drill bit 1-2 reaches a specified depth, lifting the whole soil sample collecting mechanism out of the drill rod 1-1 through a hanger 2-2;
s2, after the fluid collecting part 3 and the sealing part 4 are assembled, the fluid collecting part is placed into the drilling part 1, and the sealing air bag 4-2 is inflated through the inflating part 4-4, so that the sealing air bag 4-2 is expanded until the sealing air bag 4-2 blocks the annular space at the upper end of the drill rod 1-1; then starting the vacuum pump 3-2 to enable the interior of the fluid inner tube 3-7 to form a vacuum state, so that the fluid enters the fluid inner tube 3-7, and after the fluid is collected, hanging out the fluid collecting part 3 and the sealing part 4; and then the soil sample collection part 2 is placed into the drilling part 1, the downward deep excavation sampling is continued, after the soil sample collection of the next layer of geology is finished, the fluid collection part 3 and the sealing part 4 are placed again for fluid sampling, until the soil samples and the fluid samples of all the target geological layers are completely collected, the collection part in the drilling part 1 is lifted out, and then the drilling part 1 is lifted out.
Claims (5)
1. A shallow fluid sampling device, characterized by: comprises a drilling part (1), a soil sample collecting part (2) and a fluid collecting part (3);
the soil sample collecting part (2) and the fluid collecting part (3) are both arranged in the drilling part (1);
the drilling part (1) comprises a drill rod (1-1) and a drill bit (1-2); the inner wall of the upper end of the drill bit (1-2) is in threaded fit with the outer wall of the lower end of the drill rod (1-1); a second limiting step (1-4) is arranged at the upper part of the inner wall of the drill rod (1-1), and the inner diameter of the inner wall of the drill rod (1-1) at the upper end of the second limiting step (1-4) is larger than that of the inner wall of the drill rod (1-1) at the lower end of the second limiting step (1-4); the drill bit (1-2) is hollow, and the lower end of the drill bit (1-2) is conical; the inner wall of the drill bit (1-2) is provided with a first limiting step (1-3), and the inner diameter of the inner wall of the drill bit (1-2) at the upper end of the first limiting step (1-3) is larger than that of the inner wall of the drill bit (1-2) at the lower end of the first limiting step (1-3);
the soil sample collecting part (2) comprises an impactor (2-1) and a soil sample collecting mechanism; the impactor (2-1) is arranged at the upper end of the soil sample collecting mechanism, and the soil sample collecting mechanism is arranged in the drilling part (1);
the fluid collection part (3) comprises an air extraction pipeline (3-1), a vacuum pump (3-2), an upper self-sealing joint (3-3), a central pipe (3-4), a lower self-sealing joint (3-5), a reducing joint (3-6), a fluid inner pipe (3-7) and a one-way negative pressure filter valve (3-8);
the upper end port of the air exhaust pipeline (3-1) is connected with a vacuum pump (3-2), and the inner wall of the lower end of the air exhaust pipeline (3-1) is in threaded fit connection with the outer wall of the upper end of the upper self-sealing joint (3-3); the inner wall of the lower end of the upper self-sealing joint (3-3) is in threaded fit connection with the outer wall of the upper end of the central tube (3-4); the inner wall of the lower end of the central tube (3-4) is in threaded fit connection with the outer wall of the upper end of the lower self-sealing joint (3-5); the outer wall of the lower end of the lower self-sealing joint (3-5) is in threaded fit connection with the inner wall of the upper end of the reducer union (3-6); the outer wall of the lower end of the reducing joint (3-6) is in threaded fit connection with the inner wall of the upper end of the fluid inner pipe (3-7); the outer diameter of the fluid inner pipe (3-7) is smaller than the inner diameter of the inner wall of the lower end of the drill rod (1-1); the lower end face of the fluid inner pipe (3-7) is pressed on the first limiting step (1-3); the upper end of the outer wall of the one-way negative pressure filter valve (3-8) is in threaded fit connection with the lower end of the inner wall of the fluid inner pipe (3-7).
2. The superficial fluid sampling device of claim 1 wherein: the soil sample collecting mechanism comprises a sitting hanger (2-2), a connecting rod (2-3) and a soil sample inner tube (2-4);
the outer wall of the lower end of the impactor (2-1) is in threaded fit connection with the inner wall of the upper end of the drill rod (1-1); the sitting and hanging device (2-2) comprises a hollow disc and a sitting and hanging barrel; the inner diameter of the sitting and hanging barrel is equal to the diameter of the inner hole of the hollow disc, and the outer diameter of the sitting and hanging barrel is smaller than the diameter of the circumference of the outer wall of the hollow disc; the upper end of the sitting and hanging barrel is vertically connected to the round hole of the lower end face of the hollow disc; the circumferential diameter of the outer wall of the hollow disc is equal to the inner diameter of the inner wall of the drill rod (1-1) at the upper end of the second limiting step (1-4), and the lower end face of the hollow disc is pressed on the second limiting step (1-4); the connecting rod (2-3) is in a circular tube with a thin upper part and a thick lower part; the outer wall of the upper end of the connecting rod (2-3) is in threaded fit connection with the inner wall of the lower end of the sitting and hanging barrel; the soil sample inner tube (2-4) is cylindrical, and the inner wall of the upper end of the soil sample inner tube (2-4) is in threaded fit connection with the outer wall of the lower end of the connecting rod (2-3); the inner diameter of the connecting rod (2-3) is equal to the inner diameter of the inner wall of the drill bit (1-2) at the lower end of the first limiting step (1-3), and the outer diameter of the soil sample inner tube (2-4) is smaller than the inner diameter of the inner wall at the lower end of the drill rod (1-1); the lower end face of the soil sample inner tube (2-4) is pressed on the first limiting step (1-3).
3. The superficial fluid sampling device of claim 2, wherein: a sealing part (4) is additionally arranged; the sealing part (4) comprises an inflation connector (4-1), a sealing air bag (4-2), an inflation tube (4-3) and an inflation piece (4-4); the sealing air bag (4-2) is a spherical hollow air bag, and the central tube (3-4) vertically penetrates through the spherical center of the sealing air bag (4-2); the sealed air bag (4-2) is provided with an inflation connector (4-1), and the inflation connector (4-1) is communicated with the inner periphery and the outer periphery of the sealed air bag (4-2); the inflation piece (4-4) is connected with the air inlet of the inflation joint (4-1) through an inflation tube (4-3).
4. The superficial fluid sampling device of claim 3 wherein: the fluid inner pipe (3-7) is a round pipe made of transparent PC materials.
5. A method of shallow fluid sampling, characterized by: the shallow fluid sampling device of any one of claims 1-4 is used, comprising the steps of:
s1, arranging a soil sample collecting part (2) into a drilling part (1), then starting an impactor (2-1), applying axial impact force with a certain frequency to a drill rod (1-1) downwards by the impactor (2-1) to enable a drill bit (1-2) below the drill rod (1-1) to drill downwards, enabling a soil sample on a drilling path of the drill bit (1-2) to enter a soil sample collecting mechanism, and hanging the whole soil sample collecting mechanism out of the drill rod (1-1) through a hanger (2-2) after the drill bit (1-2) reaches a specified depth;
s2, after the fluid collecting part (3) and the sealing part (4) are assembled, placing the assembled fluid collecting part and the assembled sealing part into the drilling part (1), and inflating the sealing air bag (4-2) through the inflating piece (4-4) to enable the sealing air bag (4-2) to expand until the sealing air bag (4-2) blocks the annular space at the upper end of the drill rod (1-1); then starting a vacuum pump (3-2) to enable the interior of the fluid inner pipe (3-7) to be in a vacuum state, so that the fluid enters the fluid inner pipe (3-7), and after the fluid is collected, hanging out the fluid collecting part (3) and the sealing part (4); and then the soil sample collection part (2) is placed into the drilling part (1), the downward deep excavation sampling is continued, after the soil sample collection of the next layer of geology is finished, the fluid collection part (3) and the sealing part (4) are placed again for fluid sampling, until the soil samples and the fluid samples of all target geological layers are collected, the collection part in the drilling part (1) is lifted out, and then the drilling part (1) is lifted out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110342300.8A CN113107478A (en) | 2021-03-30 | 2021-03-30 | Shallow fluid sampling device and sampling method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110342300.8A CN113107478A (en) | 2021-03-30 | 2021-03-30 | Shallow fluid sampling device and sampling method |
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| CN113107478A true CN113107478A (en) | 2021-07-13 |
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| CN202110342300.8A Pending CN113107478A (en) | 2021-03-30 | 2021-03-30 | Shallow fluid sampling device and sampling method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115125939A (en) * | 2022-08-03 | 2022-09-30 | 中电建路桥集团有限公司 | Construction equipment and construction method of prefabricated ultra-deep pile for soft soil foundation |
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2021
- 2021-03-30 CN CN202110342300.8A patent/CN113107478A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115125939A (en) * | 2022-08-03 | 2022-09-30 | 中电建路桥集团有限公司 | Construction equipment and construction method of prefabricated ultra-deep pile for soft soil foundation |
| CN115125939B (en) * | 2022-08-03 | 2024-04-12 | 中电建路桥集团有限公司 | Prefabricated ultra-deep pile construction equipment and construction method for soft soil foundation |
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