CN216309734U - In-situ soil permeability coefficient detection device - Google Patents
In-situ soil permeability coefficient detection device Download PDFInfo
- Publication number
- CN216309734U CN216309734U CN202122646376.8U CN202122646376U CN216309734U CN 216309734 U CN216309734 U CN 216309734U CN 202122646376 U CN202122646376 U CN 202122646376U CN 216309734 U CN216309734 U CN 216309734U
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- Prior art keywords
- soil
- water injection
- cylinder
- pedal
- permeability coefficient
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- 239000002689 soil Substances 0.000 title claims abstract description 91
- 230000035699 permeability Effects 0.000 title claims abstract description 29
- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000002347 injection Methods 0.000 claims abstract description 51
- 239000007924 injection Substances 0.000 claims abstract description 51
- 238000002474 experimental method Methods 0.000 claims abstract description 7
- 239000012780 transparent material Substances 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims 1
- 238000003825 pressing Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000012466 permeate Substances 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility model discloses an in-situ soil permeability coefficient detection device which comprises a test cylinder, a supporting platform, a first pedal and a second pedal, wherein the first pedal is connected with the second pedal through a connecting rod; the test cylinder comprises a water injection cylinder body and a soil cylinder body, the water injection cylinder body is fixed at the top of the soil cylinder body, and the water injection cylinder body and the soil cylinder body are arranged concentrically; the supporting platform is annular and is horizontally fixed at the top of the water injection cylinder, a first pipe level and a second pipe level are arranged at the top of the supporting platform, and the first pipe level and the second pipe level are perpendicular to each other; the first pedal and the second pedal are respectively and vertically fixed on the outer walls of the two sides of the experiment barrel and are positioned between the water injection barrel and the soil barrel. The soil permeability coefficient detection device is simple in structure and convenient to operate, and effectively solves the problems that the existing soil permeability coefficient detection device is complex in component and the like.
Description
Technical Field
The utility model relates to the technical field of geotechnical tests, in particular to an in-situ soil permeability coefficient detection device.
Background
The permeability coefficient is a quantitative index representing the permeability of soil and is a basic parameter which must be used in seepage calculation, so that the accurate determination of the permeability coefficient of soil is a very important work. At present, in the existing national standard GB/T50123-2019, the detection method related to the in-situ soil permeability coefficient mainly comprises a test pit water injection method permeability test, wherein a single-ring method is suitable for sandy soil and silty soil, and a double-ring method is suitable for cohesive soil.
The test instruments and operation steps required by the two test methods are complex, and the in-situ soil permeability coefficient detection device is not beneficial to quickly, simply and accurately detecting the in-situ soil permeability coefficient, so that the work difficulty of engineering test personnel is greatly reduced if the in-situ soil permeability coefficient detection device capable of simplifying the test steps and facilitating the instrument assembly is provided.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide an in-situ soil permeability coefficient detection device to solve the problems of the background technology.
The technical scheme of the utility model is as follows: an in-situ soil permeability coefficient detection device comprises a test cylinder, a supporting platform, a first pedal and a second pedal; the test cylinder comprises a water injection cylinder body and a soil cylinder body, the water injection cylinder body is fixed at the top of the soil cylinder body, and the water injection cylinder body and the soil cylinder body are arranged concentrically; the supporting platform is annular and is horizontally fixed at the top of the water injection cylinder, a first pipe level and a second pipe level are arranged at the top of the supporting platform, and the first pipe level and the second pipe level are perpendicular to each other; the first pedal and the second pedal are respectively and vertically fixed on the outer walls of the two sides of the experiment barrel and are positioned between the water injection barrel and the soil barrel.
Further, the lower end of the soil barrel is a cutting ring-shaped cut.
Furthermore, the cutting ring-shaped notch is a single inclined cutting edge, the angle of the single inclined cutting edge is 10 degrees, and the length of the single inclined cutting edge is 10 mm.
Further, the first pedal and the second pedal are symmetrically arranged with the center of the test tube, and the distance between the bottoms of the first pedal and the second pedal and the lower end of the soil barrel body is 100 mm.
Furthermore, the soil barrel is made of metal materials, the scale division value of the scale of the soil depth scale is 1mm, and the soil barrel is arranged on the outer wall of the soil barrel by taking the lower end of the soil barrel as a starting point.
Furthermore, the water injection cylinder is made of transparent materials, the scale division value of the water injection quantity scale is 100ml, the water injection quantity scale is arranged on the inner wall of the water injection cylinder by taking the upper end of the water injection cylinder as a starting point, and the water injection quantity scale is positioned on the opposite side of the soil body depth scale.
Further, the inner diameter of the test cylinder was 113mm, and the height of the test cylinder was 310 mm.
Compared with the prior art, the utility model has the beneficial effects that:
the device has a simple structure, is convenient to operate, effectively solves the problems of complex parts and the like of the existing soil permeability coefficient detection device, presses the test cylinder into the soil body when measuring the permeability coefficient of the undisturbed soil, injects clean water into the test cylinder, and can quickly calculate the permeability coefficient of the soil body to be measured according to the amount of the permeated water and the test time.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a front sectional structural view of the present invention;
fig. 3 is a schematic top view of the present invention.
Detailed Description
The following describes in detail an embodiment of the present invention with reference to fig. 1 to 3. In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature; in the description of the present invention, "a plurality" means two or more unless otherwise specified.
Examples
As shown in fig. 1 to 3, the present invention provides an in-situ soil permeability coefficient detection apparatus, which includes a test cylinder, a support platform 3, a first pedal 4 and a second pedal 5; the test tube is vertically arranged and comprises a water injection tube body 1 and a soil tube body 2, the water injection tube body 1 is fixed at the top of the soil tube body 2, the water injection tube body 1 and the soil tube body 2 are concentrically arranged, the side wall of the water injection tube body 1 is provided with water injection quantity scale marks 9, and the side wall of the soil tube body 2 is provided with soil body depth scale marks 10; the supporting platform 3 is annular and is horizontally fixed on the outer wall of the top of the water injection cylinder body 1, a first pipe level 7 and a second pipe level 8 are arranged at the top of the supporting platform 3, and the first pipe level 7 and the second pipe level 8 are arranged vertically; the first pedal 4 and the second pedal 5 are respectively and vertically fixed on the outer walls of the two sides of the experiment barrel and are positioned between the water injection barrel body 1 and the soil barrel body 2.
Preferably, as shown in fig. 1 and 2, the lower end of the soil barrel body 2 is a cutting ring-shaped notch 6 for facilitating the insertion of the test cartridge into the soil.
Specifically, the cutting ring-shaped notch 6 is a single inclined cutting edge, the angle of the single inclined cutting edge is 10 degrees, and the length of the single inclined cutting edge is 10 mm.
As shown in fig. 1 and 2, the first pedal 4 and the second pedal 5 are symmetrically arranged around the center of the test tube, and the distance between the bottom of the first pedal 4 and the bottom of the second pedal 5 and the lower end of the soil barrel 2 is 100 mm.
Preferably, as shown in fig. 1, in order to improve the structural strength of the soil cylinder 2 and facilitate insertion into soil, the soil cylinder 2 is made of a metal material, and the scale division value of the soil depth scale 10 is 1mm, and is provided on the outer wall of the soil cylinder 2 with the lower end of the soil cylinder 2 as a starting point.
Preferably, as shown in fig. 2, in order to observe the penetration depth of the test cylinder through the soil depth scale 10 on the outer wall of the soil cylinder 2 during the experiment, the height of the water level inside the water injection cylinder 1 can be directly observed through the water injection amount scale 9, so that the water injection cylinder 1 is made of transparent material, the scale division value of the water injection amount scale 9 is 100ml, and the water injection amount scale 9 is arranged on the inner wall of the water injection cylinder 1 with the upper end of the water injection cylinder 1 as the starting point, and the water injection amount scale 9 is located at the opposite side of the soil depth scale 10; during the experiment, because water injection barrel 1 constitutes and water injection volume scale 9 is located the offside of soil body degree of depth scale 10 for transparent material, consequently stand and just can observe the water injection volume scale 9 of opposite side in the one side that is equipped with soil body degree of depth scale 10, do not need the round trip movement position to observe, be favorable to going on of experiment.
Wherein, the internal diameter of test section of thick bamboo is 113mm, the height of test section of thick bamboo is 310 mm.
The test steps for detecting the permeability coefficient of the in-situ soil comprise the following steps:
s1, determining a proper test soil surface, carefully cleaning impurities on the soil surface, avoiding disturbance to the soil and ensuring the soil surface to be clean and flat;
s2, placing one end of the device with the cutting ring-shaped notch 6 downwards on a test soil surface carefully, treading the first pedal 4 and the second pedal 5 by feet or placing heavy objects with the same mass on the first pedal 4 and the second pedal 5 to ensure that the first pedal 4 and the second pedal 5 are stressed in balance, and meanwhile, pressing the supporting platform 3 downwards by hands, wherein the process is to keep the test cylinder vertical, when the pressing depth is 100mm (the pressing depth can be read through the scale 10 of a soil depth scale), stopping treading the first pedal 4 and the second pedal 5 or unloading the heavy objects on the first pedal 4 and the second pedal 5;
s3, observing whether bubbles in the first pipe level 7 and the second pipe level 8 on the supporting platform 3 are centered or not, if the bubbles are not centered, performing fine adjustment on the test cylinder in the horizontal direction, if the adjustment amplitude is too large, causing large disturbance to the test soil body, and returning to the steps S1 and S2;
s4, paving 2-3 cm gravel layers on the test soil surface in the test cylinder to buffer the impact on the test soil surface during water injection;
s5, measuring the temperature of clean water to be injected by a thermometer with the measuring range of 0-50 ℃ and the division value of 1 ℃, then injecting clean water into the water injection barrel 1 to a scale line of 0ml which is slightly higher than the scale line 9 of the water injection rate scale, pressing down the timer at the moment when the water naturally permeates to the scale line of 0ml, recording the starting time of the test, pressing down the timer again at the moment when the water naturally permeates to the scale line of 1500ml, recording the ending time of the test, and reading out the permeation test time t (unit: second);
s6, using the test data, calculating the permeability coefficient K (unit: cm/S) of the test soil body according to the formula (1):
and S7, after the test is finished, carefully taking the test device out of the soil, and cleaning the test device for the next use.
Although the preferred embodiments of the present invention have been disclosed, the embodiments of the present invention are not limited thereto, and any variations that can be made by those skilled in the art are intended to fall within the scope of the present invention.
Claims (7)
1. An in-situ soil permeability coefficient detection device, comprising:
the test tube comprises a water injection tube body (1) and a soil tube body (2), wherein the water injection tube body (1) is fixed at the top of the soil tube body (2), the water injection tube body (1) and the soil tube body (2) are arranged concentrically, water injection quantity scale marks (9) are arranged on the side wall of the water injection tube body (1), and soil body depth scale marks (10) are arranged on the side wall of the soil tube body (2);
the supporting platform (3) is annular and is horizontally fixed at the top of the water injection cylinder body (1), a first pipe level (7) and a second pipe level (8) are arranged at the top of the supporting platform (3), and the first pipe level (7) and the second pipe level (8) are perpendicular to each other;
the first pedal (4) and the second pedal (5) are respectively and vertically fixed on the outer walls of the two sides of the experiment cylinder and are positioned between the water injection cylinder body (1) and the soil cylinder body (2).
2. The in-situ soil permeability coefficient detection device according to claim 1, wherein the lower end of the soil cylinder (2) is a cutting ring-shaped notch (6).
3. The in-situ soil permeability coefficient detection device according to claim 2, wherein the annular knife-shaped cut (6) is a single inclined cutting edge, the angle of the single inclined cutting edge is 10 degrees, and the length of the single inclined cutting edge is 10 mm.
4. The in-situ soil permeability coefficient detection device as claimed in claim 1, wherein the first pedal (4) and the second pedal (5) are symmetrically arranged around the center of the test cylinder, and the distance between the bottom of the first pedal (4) and the bottom of the second pedal (5) and the lower end of the soil cylinder (2) is 100 mm.
5. The in-situ soil permeability coefficient detection device according to claim 1, wherein the soil cylinder (2) is made of metal, the scale division value of the soil depth scale (10) is 1mm, and the soil depth scale is arranged on the outer wall of the soil cylinder (2) with the lower end of the soil cylinder (2) as a starting point.
6. The in-situ soil permeability coefficient detection device according to claim 5, wherein the water injection cylinder (1) is made of transparent material, the scale division value of the water injection amount scale (9) is 100ml, the water injection amount scale is arranged on the inner wall of the water injection cylinder (1) with the upper end of the water injection cylinder (1) as a starting point, and the water injection amount scale (9) is located at the opposite side of the soil depth scale (10).
7. The in-situ soil permeability coefficient detection device of claim 1, wherein the inner diameter of the test cylinder is 113mm, and the height of the test cylinder is 310 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122646376.8U CN216309734U (en) | 2021-11-01 | 2021-11-01 | In-situ soil permeability coefficient detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122646376.8U CN216309734U (en) | 2021-11-01 | 2021-11-01 | In-situ soil permeability coefficient detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216309734U true CN216309734U (en) | 2022-04-15 |
Family
ID=81118256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122646376.8U Expired - Fee Related CN216309734U (en) | 2021-11-01 | 2021-11-01 | In-situ soil permeability coefficient detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216309734U (en) |
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2021
- 2021-11-01 CN CN202122646376.8U patent/CN216309734U/en not_active Expired - Fee Related
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| 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: 20220415 |