CN203824998U - Testing device for water movement of unsaturated soil - Google Patents
Testing device for water movement of unsaturated soil Download PDFInfo
- Publication number
- CN203824998U CN203824998U CN201420149368.XU CN201420149368U CN203824998U CN 203824998 U CN203824998 U CN 203824998U CN 201420149368 U CN201420149368 U CN 201420149368U CN 203824998 U CN203824998 U CN 203824998U
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- shell ring
- casing section
- soil
- annular fixing
- fixing collar
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model provides a testing device for water movement of unsaturated soil. The testing device is a soil water environment experiment testing device which is detachable, can be used for conveniently filling and taking out soil and is convenient to test. The device comprises a soil column casing and a water supplementing vessel, wherein the soil column casing is composed of a top casing section, a middle casing section and a bottom casing section; a lower end opening of the top casing section, openings in the two ends of the middle casing section and an upper end opening of the bottom casing section are respectively provided with annular reinforcing rings; the annular reinforcing rings are provided with thread holes. According to the testing device, the middle casing sections of different quantities can be selected according to different depths of testing soil samples; in a testing process of filling the soil samples, the middle casing section is mounted on the bottom casing section; a gasket is padded between the annular reinforcing rings of the middle casing section and the bottom casing section; screws are arranged in the thread holes in a penetrating manner and are tightened and fastened by nuts in sequence until the screws reach the top casing section. In a data acquisition process, the top casing section and the middle casing section are sequentially detached from the top casing section so as to respectively acquire the data of the soil samples with the different heights. The testing device is convenient for soil filling and data acquisition and is convenient to wash.
Description
Technical field
The utility model relates to the test unit of unsaturated soil water migration, and this device can split, and regulates the height not waiting, and conveniently puts into and take out soil, and convenient test, belongs to soil-water environment experiment test device field.
Background technology
It is generally acknowledged that soil has solid phase (soil particle), liquid phase (water in soil) and gas phase (gas in soil) to form.When soil particle space is filled by liquid phase completely, to account for the ratio of interstices of soil be 100% to water, and this soil is referred to as saturated soil; Otherwise, when soil particle space, by water and air, filled, saturation degree is less than 100, is greater than 0, and this soil is referred to as unsaturated soil.Soil and water are the basic of all things on earth growth, and the mankind were never interrupted for the research of soil and water, and the migration of water in unsaturated soil is an important research topic.In unsaturated soil, the experimental study of Water Transport comprises field test and shop experiment, field test is owing to can not controlling starting condition and boundary condition, the data that gather can only be as studying foundation under certain certain environmental conditions, water movement mechanism under research controlled condition, can only complete by shop experiment conventionally.Earth pillar model equipment is conventional laboratory testing rig, traditional soil-column test device adopts a complete straight tube structure, when on-test, first the soil body is loaded in earth pillar cylinder, because the volume of earth pillar cylinder is larger, more than typically having a diameter from 10cm, be highly more than 1.2m, the soil body is in filling process, and the soil that installs to bottom is easy to the sidewall of Polluted Soil column casing, and be difficult to control the dry density of the soil body that is loaded into earth pillar cylinder bottom, bring interference to the accuracy of test.In later stage sampling test figure process, the collection of deep soil sample is difficult to realize.Sampling instrument of the prior art, such as Luoyang Spade etc., sampling depth low precision, and usually soil sample has been caused to larger disturbance in employing process, and cause some precious data to measure, such as soil sample dry density, shearing strength etc.After off-test, need earth pillar cylinder to clean, the height of earth pillar cylinder and the ratio of diameter, allow earth pillar cylinder inside be difficult to clean up, and needs to use longer brush to clean the bottom of earth pillar cylinder, and cleaning amount is very large, and needs larger cleaning place.
Summary of the invention
In order to solve the problem of above-mentioned existence, the utility model discloses a kind of test unit of unsaturated soil water migration, the earth pillar cylinder of this test unit can split into some sections, during the filling soil body, can first in end shell ring, load the soil body, then fixing middle shell ring is installed one by one, one by one the shell ring filling soil body, improve the efficiency of the filling soil body, avoid the inner side barrel of soil pollution earth pillar cylinder; While measuring test figure, shell ring is measured Soil Parameters one by one, and shell ring is removed the soil body one by one, improves operability and the accuracy measured; Meanwhile, in cleaning process, can clean respectively the end shell ring spliting, middle shell ring and top shell ring, simplify cleaning, clean easier, cleaner.
The test unit of unsaturated soil water migration, comprise earth pillar cylinder and moisturizing ware, described earth pillar cylinder is by a detachable top shell ring, at the bottom of shell rings and one, shell ring forms in the middle of several, top shell ring, middle shell ring are consistent with wall thickness with end shell ring bore, between end shell ring and top shell ring, splice the middle shell ring that several run through, end shell ring is connected to moisturizing ware by flexible conduit.
The annular fixing collar horizontally outward extending of the sizes such as the upper end open of the lower ending opening of described top shell ring, the both ends open of middle shell ring and end shell ring is respectively equipped with, annular fixing collar is provided with the threaded hole of up/down perforation, the quantity of the threaded hole on each annular fixing collar is more than two, and the gap between adjacent screw holes is consistent.
When described top shell ring, middle shell ring and end shell ring splice up and down, neighbouring annular fixing collar consistency from top to bottom is overlapping, between neighbouring annular fixing collar, be lined with packing ring, the threaded hole consistency from top to bottom of neighbouring annular fixing collar, in threaded hole, be penetrated with screw, on the screw rod of screw, tightened nut.
Described packing ring is between threaded hole and fixing collar inner side.
The bottom of shell ring, the described end is fixed with base, and the sidewall of end shell ring is provided with outward extending water inlet pipe, and water inlet pipe is connected to the rising pipe of moisturizing ware by flexible conduit, and rising pipe is positioned at the sidewall of moisturizing ware.
The top of described moisturizing ware is openend, and openend is reducing shape, and the moisturizing ware openend of reducing shape is provided with high scale line and lower scale mark.
The utility model, during use, first by end shell ring and moisturizing ware standing on the testing table of level, the rising pipe of moisturizing ware is connected with flexible conduit with the water inlet pipe of end shell ring, then, in end shell ring, pack the soil body into, the soil body packs into after certain altitude, fixing middle shell ring is installed on end shell ring, between middle shell ring and the annular fixing collar of end shell ring, be lined with pad, threaded hole alignment, in threaded hole, spiral is screwed into screw, and the nut that is being tightened on the screw rod of screw, continue again to add the soil body in end shell ring and middle shell ring, shell ring in the middle of increasing successively, until top shell ring, each shell ring successively effectively avoids each solum in adding earth pillar cylinder process, pollute the earth pillar cylinder sidewall of other solums, cause test figure inaccurate, while measuring test figure, successively measure from the top down, first measure the soil body data in the shell ring of top, then the soil body in the shell ring of top is taken out, remove top shell ring, then measure the soil body data in middle shell ring below, go on successively, facilitate data acquisition, improve the accuracy of data, top shell ring after taking apart, middle shell ring and end shell ring, convenient cleaning, greatly reduces cleaning difficulty.
Accompanying drawing explanation
Fig. 1 is one-piece construction schematic diagram of the present utility model,
Fig. 2 is the A place partial enlarged drawing in Fig. 1,
Fig. 3 is the structural representation of shell ring in the middle of the utility model,
Reference numerals list: 1-top shell ring, 2-middle shell ring, 3-end shell ring, 4-moisturizing ware, 5-flexible conduit, 6-annular fixing collar, 7-threaded hole, 8-packing ring, 9-screw, 10-nut, 11-base, 12-water inlet pipe, 13-rising pipe, 14-lower scale mark, 15-high scale line.
Embodiment
Below in conjunction with the drawings and specific embodiments, further illustrate the utility model.Should understand following embodiment and only for the utility model is described, be not used in restriction scope of the present utility model.
Fig. 1 is one-piece construction schematic diagram of the present utility model, in figure, top shell ring 1, middle shell ring 2 and end shell ring 3 are installed respectively fixing, between neighbouring annular fixing collar 6, be lined with packing ring 8, threaded hole 7 alignment of annular fixing collar 6 penetrate screw 9 in threaded hole 7, and the other end screw thread of screw 9 is tightened and is fixed wtih nut 10, nut 10 is closely fixed together two-layer annular fixing collar 6 and packing ring 8, packing ring 8 plays sealing function, makes junction sealing, and the soil body and moisture can seepage not gone out.
Before use, by end shell ring 3, middle shell ring 2 and top shell ring 1 are separated, the water inlet pipe 12 of end shell ring 3 is communicated with the rising pipe of moisturizing ware 4 13 use flexible conduits 5, from the top end opening of end shell ring 3, to end shell ring 3, load the coarse gravel that particle diameter is 6-8mm, form cushion, use again diameter identical with earth pillar cylinder interior diameter, the good geotextile of water permeability lies on the particle of cushion, by certain dry density, pack preprepared soil sample into subsequently, when end shell ring 3 is soon filled, shell ring 2 in the middle of getting one, the middle annular fixing collar 6 of shell ring 2 and the annular fixing collar of end shell ring 3 overlapping alignment Shang Xia 6, and pad last layer packing ring 8 between upper and lower two-layer annular fixing collar 6, threaded hole 7 alignment of upper and lower two-layer annular fixing collar 6, in threaded hole 7, penetrate screw 9, with nut 10 be tightened two-layer annular fixing collar 6 and packing ring 8, make to seal between it.Then, then load the soil body in middle shell ring 2, when middle shell ring 2 is soon filled, according to the needs of the test soil body degree of depth, shell ring 2 in the middle of increasing one by one, last, on a uppermost middle shell ring 2, top shell ring 1 is installed, in top shell ring 1, load the appropriate soil body.During test, in moisturizing ware 4, add water, water be also height until the lower scale mark 14 on moisturizing ware 4, then add vegetable oil in moisturizing ware 4, the liquid level of vegetable oil is to high scale line 15.Vegetable oil can effectively prevent the spontaneous evaporation of water in moisturizing ware 4, can access the metering of more accurate water, and after water level reduces, supplementing water is to lower scale mark 14.Water enters end shell ring 3 by flexible conduit 5, and water is migrated in end shell ring 3, shell ring 2 and top shell ring 1 in the middle of entering into.
During testing experiment data, from earth pillar cylinder top, successively test the data the soil body of different depth downwards, such as water percentage, when collecting the soil body of the top shell ring 1 following degree of depth, the soil body in top shell ring 1 is taken out, and remove top shell ring 1, shell ring 2 in the middle of can continuing easily to gather, successively and then gather the data of end shell ring 3.Image data is easier, more accurate.
In cleaning process, top shell ring 1, shell ring 2 and end shell ring 3 separately clean respectively in the middle of each, clean conveniently, clean cleaner.
The bottom of end shell ring 3 is provided with base 11, and base 11 increases the contact area of end shell rings 3 and testing table, allows end shell ring 3 can more stablize the end and stand on testing table.
Fig. 2 is the A place partial enlarged drawing in Fig. 1, broken section in figure, and from analysing and observe part, annular fixing collar 6 is provided with threaded hole 7.Screw 9 is fixed packing ring 8 sealings middle with being clipped in them of upper and lower two-layer annular fixing collar 6.
Fig. 3 is the structural representation of shell ring in the middle of the utility model, and middle shell ring 2 is up/down perforation as seen from the figure, and two ends are equipped with the tube structure of annular fixing collar 6.
The disclosed technological means of the utility model scheme is not limited only to the disclosed technological means of above-mentioned technological means, also comprises the technical scheme being comprised of above technical characterictic combination in any.
Claims (6)
1. the test unit that unsaturated soil water is migrated, comprise earth pillar cylinder and moisturizing ware (4), it is characterized in that described earth pillar cylinder is by a detachable top shell ring (1), shell ring (3) forms at the bottom of shell rings (2) and one in the middle of several, top shell ring (1), middle shell ring (2) are consistent with wall thickness with end shell ring (3) bore, between end shell ring (3) and top shell ring (1), splice the middle shell ring (2) that several run through, end shell ring (3) is connected to moisturizing ware (4) by flexible conduit (5).
2. the test unit that unsaturated soil water according to claim 1 is migrated, the annular fixing collar (6) horizontally outward extending that it is characterized in that the sizes such as the both ends open of the lower ending opening of described top shell ring (1), middle shell ring (2) and the upper end open of end shell ring (3) are respectively equipped with, annular fixing collar (6) is provided with the threaded hole (7) of up/down perforation, the quantity of the threaded hole (7) on each annular fixing collar (6) is more than two, and the gap between adjacent screw holes (7) is consistent.
3. the test unit that unsaturated soil water according to claim 2 is migrated, while it is characterized in that described top shell ring (1), middle shell ring (2) and end shell ring (3) splice up and down, neighbouring annular fixing collar (6) consistency from top to bottom is overlapping, between neighbouring annular fixing collar (6), be lined with packing ring (8), threaded hole (7) consistency from top to bottom of neighbouring annular fixing collar (6), in threaded hole (7), be penetrated with screw (9), on the screw rod of screw (9), tightened nut (10).
4. the test unit of unsaturated soil water migration according to claim 3, is characterized in that described packing ring (8) is positioned between threaded hole (7) and annular fixing collar (6) inner side.
5. the test unit that unsaturated soil water according to claim 1 is migrated, the bottom that it is characterized in that shell ring of the described end (3) is fixed with base (11), the sidewall of end shell ring (3) is provided with outward extending water inlet pipe (12), water inlet pipe (12) is connected to the rising pipe (13) of moisturizing ware (4) by flexible conduit (5), rising pipe (13) is positioned at the sidewall of moisturizing ware (4).
6. the test unit that unsaturated soil water according to claim 5 is migrated, the top that it is characterized in that described moisturizing ware (4) is openend, openend is reducing shape, and the moisturizing ware openend of reducing shape is provided with high scale line (15) and lower scale mark (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149368.XU CN203824998U (en) | 2014-03-31 | 2014-03-31 | Testing device for water movement of unsaturated soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420149368.XU CN203824998U (en) | 2014-03-31 | 2014-03-31 | Testing device for water movement of unsaturated soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203824998U true CN203824998U (en) | 2014-09-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420149368.XU Expired - Fee Related CN203824998U (en) | 2014-03-31 | 2014-03-31 | Testing device for water movement of unsaturated soil |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781582A (en) * | 2019-02-28 | 2019-05-21 | 华南农业大学 | It is a kind of for measuring the container and measuring method of tap density |
| CN110823781A (en) * | 2019-11-22 | 2020-02-21 | 山东大学 | Multifunctional roadbed soil moisture migration experiment model box and experiment method |
| CN115356179A (en) * | 2022-09-15 | 2022-11-18 | 四川大学 | Grouting test device and sampling method for segmented sampling of undisturbed grouting soil samples with different depths |
-
2014
- 2014-03-31 CN CN201420149368.XU patent/CN203824998U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109781582A (en) * | 2019-02-28 | 2019-05-21 | 华南农业大学 | It is a kind of for measuring the container and measuring method of tap density |
| CN110823781A (en) * | 2019-11-22 | 2020-02-21 | 山东大学 | Multifunctional roadbed soil moisture migration experiment model box and experiment method |
| CN110823781B (en) * | 2019-11-22 | 2021-06-25 | 山东大学 | Multifunctional roadbed soil moisture migration experiment model box and experiment method |
| CN115356179A (en) * | 2022-09-15 | 2022-11-18 | 四川大学 | Grouting test device and sampling method for segmented sampling of undisturbed grouting soil samples with different depths |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140910 Termination date: 20170331 |
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| CF01 | Termination of patent right due to non-payment of annual fee |