CN212134432U - Device for in-situ soil permeability measurement - Google Patents
Device for in-situ soil permeability measurement Download PDFInfo
- Publication number
- CN212134432U CN212134432U CN202020118649.4U CN202020118649U CN212134432U CN 212134432 U CN212134432 U CN 212134432U CN 202020118649 U CN202020118649 U CN 202020118649U CN 212134432 U CN212134432 U CN 212134432U
- Authority
- CN
- China
- Prior art keywords
- hollow lower
- lower pressing
- soil
- head
- pressing rod
- 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.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a device for measuring the permeability of a soil body in situ, which comprises a test head, wherein one end of the test head is opened, the open end is connected with a spliced hollow lower pressure rod, and the test head is connected with the hollow lower pressure rod and the hollow lower pressure rod are in threaded connection with the hollow lower pressure rod; a guide sleeve is arranged on the pipe wall in the test head along the radial direction, the guide sleeve is communicated with the outside of the test head, a soil cutting cup is arranged in the guide sleeve, one end of the soil cutting cup, which is close to the outer side of the test head, is opened, and the other end of the soil cutting cup, which is close to the inner side of the test head, is closed; an inner sleeve is arranged in the axial direction in the test head, and the inner sleeve is communicated with the inside of the soil cutting cup through a hose; and when the test head is connected with the hollow lower pressing rod and the hollow lower pressing rod, the water guide pipe is communicated with the water guide pipe and the water guide pipe is communicated with the inner sleeve. The utility model belongs to an in-situ permeability testing device, which has the characteristics of accurate measuring result and small error; in addition, the device also has the characteristic of reasonable design.
Description
Technical Field
The utility model relates to a soil body permeability testing arrangement, especially a device of body permeability is surveyed to normal position.
Background
The soil body permeability test mainly tests the permeability of rock and soil mass under a certain pressure.
At present, an in-situ testing device for soil permeability is not provided, most of the in-situ testing device is used for laboratory testing after collecting rock and soil samples, but after the rock and soil samples are collected, the sample structure is easy to change, and errors of testing results are caused.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a device of body permeability is surveyed to normal position. The utility model belongs to an in-situ permeability testing device, which has the characteristics of accurate measuring result and small error; in addition, the device also has the characteristic of reasonable design.
The technical scheme of the utility model: the device for in-situ soil permeability measurement comprises a test head, wherein the test head is a hollow pipe, one end of the test head is opened, the open end is connected with a spliced hollow lower pressure rod, the hollow lower pressure rod consists of a front-section hollow lower pressure rod, a middle-section hollow lower pressure rod and a tail-section hollow lower pressure rod which are identical in structure, and the test head, the front-section hollow lower pressure rod, the middle-section hollow lower pressure rod and the tail-section hollow lower pressure rod are sequentially connected through threads; a guide sleeve is arranged on the pipe wall in the test head along the radial direction, the guide sleeve is communicated with the outside of the test head, a soil cutting cup is arranged in the guide sleeve, one end of the soil cutting cup, which is close to the outer side of the test head, is opened, and the other end of the soil cutting cup, which is close to the inner side of the test head, is closed; an inner sleeve is arranged in the axial direction in the test head, and the inner sleeve is communicated with the inside of the soil cutting cup through a hose; and when the test head, the front section hollow lower pressing rod, the middle section hollow lower pressing rod and the tail section hollow lower pressing rod are connected, the aqueduct is communicated with the inner sleeve.
According to the device for measuring the permeability of the soil body in situ, the female connecting head is arranged at one end, away from the soil cutting cup, of the inner sleeve and the water guide pipe, and the male connecting head is arranged at the other end of the water guide pipe.
In the device for measuring the permeability of the soil body in situ, the connecting female head and the connecting male head are horn-shaped.
In the device for measuring the permeability of the soil body in situ, the inner side of the connecting female head and the outer side of the connecting male head are provided with rubber layers.
In the device for measuring the permeability of the soil body in situ, the joint of the inner sleeve and the hose is provided with the water valve, and the linkage rod is arranged between the water valve and the soil cutting cup.
In the device for measuring the permeability of the soil body in situ, the linkage rod is provided with a chute, and the soil cutting cup is provided with a sliding rod which is in sliding connection with the chute.
According to the device for measuring the permeability of the soil body in situ, the limiting column is arranged on one side, opposite to the soil cutting cup, in the testing head.
In the device for measuring the permeability of the soil body in situ, the inner sleeve and the water guide pipe are fixed through the bracket.
According to the device for measuring the permeability of the soil body in situ, the mutual connection positions of the test head, the front section hollow lower pressing rod, the middle section hollow lower pressing rod and the tail section hollow lower pressing rod are provided with the sealing rubber rings.
According to the device for measuring the permeability of the soil body in situ, the outer side of one end, close to the inside of the test head, of the soil cutting cup is provided with the limiting baffle.
The utility model has the advantages that:
the utility model realizes the in-situ measurement of the permeability by arranging the test head and arranging the soil cutting cup in the test head, pushing the soil cutting cup into the soil by pressure and filling water into the soil cutting cup by the inner sleeve and the water guide pipe, thereby reducing the measurement error; in addition, the utility model discloses a cavity is pushed down the depression bar and is pushed down, combines together with traditional ground normal position test probe, in the combination process, through set up the aqueduct in cavity is pushed down the depression bar, after aqueduct and interior sleeve pipe switched on, realized cutting the inside and outside independent pressurization of soil cup, each other does not influence, reasonable in design; in addition, the aqueduct is connected with the inner sleeve through the male connector and the female connector, so that the respective sealing performance is ensured, and the measurement accuracy can be further improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a portion of the region s of FIG. 1;
fig. 3 is a schematic diagram of the switch.
Description of reference numerals: the test device comprises a test head 1, a front section hollow lower pressure rod 2, a guide sleeve 3, a soil cutting cup 4, an inner sleeve 5, a hose 6, a water guide pipe 7, a connecting female head 8, a connecting male head 9, a water valve 10, a linkage rod 11, a sliding groove 12, a sliding rod 13, a push plate 14, a support 15, a sealing rubber ring 16 and a limit baffle 17.
Detailed Description
The following description is made with reference to the accompanying drawings and examples, but not to be construed as limiting the invention.
The embodiment of the utility model provides a:
an in-situ soil permeability measuring device is shown in attached figures 1-3 and comprises a test head 1, wherein the test head 1 is a hollow pipe, one end of the test head 1 is opened, the opened end is connected with a spliced hollow lower pressure rod, the hollow lower pressure rod consists of a front section hollow lower pressure rod 2, a middle section hollow lower pressure rod and a tail section hollow lower pressure rod which are identical in structure, and the test head 1, the front section hollow lower pressure rod 2, the middle section hollow lower pressure rod and the tail section hollow lower pressure rod are sequentially connected through threads; a guide sleeve 3 is radially arranged on the pipe wall in the test head 1, the guide sleeve 3 is communicated with the outside of the test head 1, a soil cutting cup 4 is arranged in the guide sleeve 3, one end of the soil cutting cup 4, which is close to the outer side of the test head 1, is open, and the other end, which is close to the inner side of the test head 1, is closed; an inner sleeve 5 is arranged in the axial direction in the test head 1, and the inner sleeve 5 is communicated with the inside of the soil cutting cup 4 through a hose 6; and a water guide pipe 7 is axially arranged in the hollow lower pressing rod, and when the test head 1, the front section hollow lower pressing rod 2, the middle section hollow lower pressing rod and the tail section hollow lower pressing rod are connected, the water guide pipe 7 is communicated with the inner sleeve pipe 5.
The working principle is as follows: when the device is used, the testing head 1 is connected with the hollow lower pressing rod 2, the inner sleeve 5 is communicated with the water guide pipe 7, then the hollow lower pressing rod 2 is driven into a testing area by a pile driver, and when the depth is not enough, the hollow lower pressing rod 2 is pressed down after being continuously spliced until the testing depth is reached; then, a gap between the water guide pipe 7 at the end part of the hollow lower pressing rod 2 at the uppermost end and the hollow lower pressing rod 2 is sealed, the water guide pipe 7 is connected with a soil cutting high-pressure water pump, and meanwhile, the water guide pipe 7 is independently connected with a testing high-pressure water pump; when the test is needed, the soil cutting high-pressure water pump firstly works, high pressure is added into an annular space between the water guide pipe 7 and the hollow lower pressure rod 2, the soil cutting cup 4 is pushed outwards along the guide sleeve 3 and cut into rock soil on the side face, and meanwhile, the soil cutting cup drives the water valve 10 to be opened; then starting a test high-pressure water pump, injecting water into a water guide pipe 7, injecting high-pressure water (the test water pressure is lower than the high-pressure water pressure of the cutting soil) into the cutting soil cup 4 through an inner sleeve 5 and a hose 6, and obtaining the permeation condition of water in the test soil through a water pressure and flow rate test device on the test high-pressure water pump, so that the in-situ measurement of the permeability is realized; after the test is finished, the soil cutting high-pressure water pump works reversely, the space between the water guide pipe 7 and the hollow lower pressure rod 2 is evacuated, the soil cutting cup 4 retracts into the guide sleeve 3, and the water valve 10 is driven to be closed; at the moment, the flow at the high-pressure water pump is tested to be zero, the soil cutting cup can be judged to be completely retracted into the guide sleeve 3, and the device can be pumped out of the soil body.
One end of the inner sleeve 5 and one end of the water guide pipe 7, which are far away from the soil cutting cup 4, are provided with a female connecting head 8, the other end of the water guide pipe 7 is provided with a male connecting head 9, and during connection, the male connecting head 9 is inserted into the female connecting head 8 to complete butt joint.
The female connecting head 8 and the male connecting head 9 are horn-shaped, so that alignment is facilitated.
Rubber layers are arranged on the inner side of the connecting female head 8 and the outer side of the connecting male head 9, and the sealing performance of the connecting position is improved.
The water valve 10 is arranged at the joint of the inner sleeve 5 and the hose 6, the linkage rod 11 is arranged between the water valve 10 and the soil cutting cup 4, when the device needs to be withdrawn, the water guide pipe 7 and the hollow lower pressing rod 2 are evacuated firstly, after the soil cutting cup 4 retracts into the testing head 1, the linkage rod 11 stirs the water valve 10 to be closed, the water flow speed of the high-pressure water pump at the moment is tested to be 0, whether the soil cutting cup 4 retracts or not is judged according to the water flow speed, when the soil cutting cup 4 extends out, the water valve 10 is opened and can work normally, the water valve 10 is structurally shown in the attached drawing 3 and comprises a cylindrical core column, a bent through hole is formed in the core column, two openings are formed in a sleeve outside the core column and are respectively communicated with the inner sleeve 5 and the water guide pipe 7, and when the linkage rod 11 rotates, the core column is stirred to rotate, so that the.
The linkage rod 11 is provided with a sliding groove 12, the soil cutting cup 4 is provided with a sliding rod 13 which is in sliding connection with the sliding groove 12, when the soil cutting cup 4 slides, the soil cutting cup is fixed and moves towards one direction, and the position of the inner sleeve 5 is fixed, so that when the soil cutting cup 4 moves, the sliding rod 13 slides in the sliding groove 12, and the sliding of the soil cutting cup 4 is not influenced on the basis of shifting the linkage rod 11.
One side opposite to the soil cutting cup 4 in the testing head 1 is provided with a limiting column 14, and when the soil cutting cup 4 retracts inwards, the limiting column 14 prevents the soil cutting cup 4 from completely retracting in the testing head 1, so that the front end of the soil cutting cup 4 is always in the guide sleeve 3.
The inner sleeve 5 and the water guide pipe 7 are fixed through the support 15, and the support 15 is rod-shaped, so that the inner sleeve 5 and the water guide pipe 7 can be fixed, and the flow of high-pressure water in the gap is not influenced.
And sealing rubber rings 16 are arranged at the mutual connection positions of the test head 1, the front section hollow lower pressing rod 2, the middle section hollow lower pressing rod and the tail section hollow lower pressing rod, so that the connection sealing property is improved.
The outer side of one end, close to the inside of the test head 1, of the soil cutting cup 4 is provided with a limiting baffle 17, and when the soil cutting cup 4 moves outwards, the limiting baffle 17 controls the maximum stroke, so that the soil cutting cup 4 is prevented from being separated from the guide sleeve 3.
The above description is only for the purpose of illustrating the present invention and the appended claims, and the scope of the present invention is not limited thereto, and any person skilled in the art can substitute or change the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (10)
1. The utility model provides a device of normal position survey soil body permeability which characterized in that: the testing device comprises a testing head (1), wherein the testing head (1) is a hollow pipe, one end of the testing head (1) is opened, the opening end is connected with a spliced hollow lower pressing rod, the hollow lower pressing rod consists of a front-section hollow lower pressing rod (2), a middle-section hollow lower pressing rod and a tail-section hollow lower pressing rod which are identical in structure, and the testing head (1), the front-section hollow lower pressing rod (2), the middle-section hollow lower pressing rod and the tail-section hollow lower pressing rod are sequentially connected through threads; a guide sleeve (3) is radially arranged on the pipe wall in the test head (1), the guide sleeve (3) is communicated with the outside of the test head (1), a soil cutting cup (4) is arranged in the guide sleeve (3), one end of the soil cutting cup (4) close to the outer side of the test head (1) is open, and one end close to the inner side of the test head (1) is closed; an inner sleeve (5) is axially arranged in the test head (1), and the inner sleeve (5) is communicated with the inside of the soil cutting cup (4) through a hose (6); and a water guide pipe (7) is axially arranged in the hollow lower pressing rod, and when the test head (1), the front section hollow lower pressing rod (2), the middle section hollow lower pressing rod and the tail section hollow lower pressing rod are connected, the water guide pipe (7) is communicated with the inner sleeve (5).
2. The apparatus for in situ measurement of soil permeability as claimed in claim 1, wherein: one end of the inner sleeve (5) and one end of the water guide pipe (7) far away from the soil cutting cup (4) are provided with a connecting female head (8), and the other end of the water guide pipe (7) is provided with a connecting male head (9).
3. The apparatus for in situ measurement of soil permeability as claimed in claim 2, wherein: the female connecting head (8) and the male connecting head (9) are trumpet-shaped.
4. The apparatus for in situ measurement of soil permeability as claimed in claim 3, wherein: rubber layers are arranged on the inner side of the connecting female head (8) and the outer side of the connecting male head (9).
5. The apparatus for in situ measurement of soil permeability as claimed in claim 1, wherein: a water valve (10) is arranged at the joint of the inner sleeve (5) and the hose (6), and a linkage rod (11) is arranged between the water valve (10) and the soil cutting cup (4).
6. The apparatus for in situ measurement of soil permeability as claimed in claim 5, wherein: the linkage rod (11) is provided with a sliding chute (12), and the soil cutting cup (4) is provided with a sliding rod (13) which is in sliding connection with the sliding chute (12).
7. The apparatus for in situ measurement of soil permeability as claimed in claim 1, wherein: and a limiting column (14) is arranged on one side of the testing head (1) opposite to the soil cutting cup (4).
8. The apparatus for in situ measurement of soil permeability as claimed in claim 1, wherein: the inner sleeve (5) and the water guide pipe (7) are fixed through a bracket (15).
9. The apparatus for in situ measurement of soil permeability as claimed in claim 1, wherein: and sealing rubber rings (16) are arranged at the mutual connection positions of the test head (1), the front section hollow lower pressing rod (2), the middle section hollow lower pressing rod and the tail section hollow lower pressing rod.
10. The apparatus for in situ measurement of soil permeability as claimed in claim 1, wherein: and a limiting baffle (17) is arranged on the outer side of one end, close to the inside of the testing head (1), of the soil cutting cup (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020118649.4U CN212134432U (en) | 2020-01-18 | 2020-01-18 | Device for in-situ soil permeability measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020118649.4U CN212134432U (en) | 2020-01-18 | 2020-01-18 | Device for in-situ soil permeability measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212134432U true CN212134432U (en) | 2020-12-11 |
Family
ID=73676786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020118649.4U Expired - Fee Related CN212134432U (en) | 2020-01-18 | 2020-01-18 | Device for in-situ soil permeability measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212134432U (en) |
-
2020
- 2020-01-18 CN CN202020118649.4U patent/CN212134432U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111504689A (en) | Jet type in-situ soil sampler | |
| CN108547614B (en) | Pressure-maintaining airtight coal sample collection device and collection method | |
| CN111963250B (en) | Borehole gas extraction negative pressure detection device and detection method | |
| CN203904966U (en) | Rapid water sampling device pressed with cone penetration device | |
| CN106401564B (en) | Measuring device for drilling while drilling quick sealing coal seam | |
| CN111766095B (en) | Layered sampling device for soil detection and using method thereof | |
| CN203745228U (en) | Sampling tube for taking undisturbed soil sample from soft soil | |
| CN212134432U (en) | Device for in-situ soil permeability measurement | |
| CN206477794U (en) | A kind of boring drill bit of fault belt Rock And Soil | |
| CN105092383B (en) | Packing element sets visual test device | |
| CN106769180B (en) | Coring device and coring process thereof | |
| CN219641332U (en) | Underground water layered sampling device | |
| CN110926954B (en) | Staged hydraulic fracturing test device and test method under true triaxial condition | |
| CN201407152Y (en) | Concentric-tube column power liquid closed-type circulating hydraulic piston pump | |
| KR101547578B1 (en) | Practical type of oil-pressurized fixed-piston sampler | |
| CN102519754A (en) | Deep water sample collector | |
| CN114624071A (en) | Device and method for automatically measuring coal bed gas content while drilling at multiple points | |
| CN205786607U (en) | Soil note leaching and undisturbed soil sampling device | |
| CN113107478A (en) | Shallow fluid sampling device and sampling method | |
| CN210460556U (en) | Large-drift-diameter bridge plug setting releasing adapter capable of automatically releasing plugging balls in underground | |
| CN206429239U (en) | A kind of water fetching device for being used to obtain desired depth water sample in drilling | |
| CN215178880U (en) | Shallow fluid sampling device | |
| CN212134433U (en) | Rock-soil permeability in-situ testing device | |
| CN115112485B (en) | Soil strength, deformation characteristic and seepage characteristic integrated detection device | |
| CN114961615B (en) | Colliery underground pressure maintaining sampling device and use method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201211 Termination date: 20220118 |