CN202141719U - Soil water characteristic curve tester - Google Patents
Soil water characteristic curve tester Download PDFInfo
- Publication number
- CN202141719U CN202141719U CN201120271620U CN201120271620U CN202141719U CN 202141719 U CN202141719 U CN 202141719U CN 201120271620 U CN201120271620 U CN 201120271620U CN 201120271620 U CN201120271620 U CN 201120271620U CN 202141719 U CN202141719 U CN 202141719U
- Authority
- CN
- China
- Prior art keywords
- tank body
- soil
- water
- buret
- curve tester
- 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
A soil water characteristic curve tester further improves measurement accuracy. The structure of the soil water characteristic curve tester comprises a base seat, a pressure-bearing barrel-shaped tank body, a pottery clay board is arranged at the bottom of the pressure-bearing barrel-shaped tank body, the tank body is sealed on the base seat through an upper cover board with an air inlet, a water discharge port is arranged at the bottom of the tank body, the water discharge port is communicated with a water discharge quantity pipe through a water discharge pipe, a reinforced board with holes is arranged on the lower portion of the pottery clay board and located in a groove of the base seat. The soil water characteristic curve tester has the advantages that the reinforced board with holes is arranged on the lower portion of the pottery clay board, so that users can conduct tamping firstly after a soil sample is put, enable soil to be denser and then lead measurement to be more accurate. In addition, a marking quantifying pipe is arranged to serve as reference of evaporation of water, so that the users can use evaporation value measured by the marking quantifying pipe to correct water discharge quantity when recording the water discharge quantity, and accuracy of soil water characteristic curves can be further improved.
Description
Technical field
The utility model belongs to technical field of civil engineering, relates to a kind of native water family curve tester of unsaturated soil, is used for the unsaturated soil mechanics soil water family curve testing research in Geotechnical Engineering field.
Background technology
In engineering mechanics, the native water family curve of test unsaturated soil, significant for prediction unsaturated soil mechanical property, volume change, infiltration coefficient, shearing strength and analysis of slope stability; On agricultural; It can depict ability and the situation that soil is supplied with crop water visually; Draw good characteristic curve of soil moisture and can accurately simulate how under the moisture condition, the moisture factor can form crop and coerce, thereby influences crop normal physiological and metabolism.The pressure plare appearance is to measure one of characteristic basic equipment of native water, set of equipments and Fredlund soil water family curve pressure plare appearance that instrument commonly used both at home and abroad has Soil Loss moisture instrument company to produce.But pressure plare appearance of the prior art need be tamped soil sample with consolidometer before measuring, and just can put into pressure vessel afterwards, is difficult in the put procedure like this guarantee that soil sample contacts with the tight of potter's clay plate, has influence on measuring accuracy.And no matter be import or domestic equipment, because measuring period is long, the draining that soil sample will be carried out under the multistage pressure is measured, and under each stage pressure, all might evaporate sub-fraction water, therefore causes measuring accuracy lower.
Summary of the invention
The purpose of the utility model is exactly the technical task for the measuring accuracy that further improves water and soil family curve tester; Designed a kind of native water family curve tester; Can tamp earlier after soil sample put into pressure vessel, make soil more closely knit, improve measuring accuracy.
The utility model for realizing the technical scheme that goal of the invention adopts is; A kind of native water family curve tester comprises in the structure that pedestal, bottom are provided with the barrel-shaped tank body of pressure-bearing of potter's clay plate, and tank body is sealed on the pedestal by the upper cover plate that has air intake opening; Tank base freeing port is set; Freeing port is communicated with the draining buret by drainpipe, below the potter's clay plate, sets up stiffening plate with holes, and stiffening plate is positioned in the groove of pedestal.
Through stiffening plate structure with holes is set below the potter's clay plate, can after putting into soil sample, tamp earlier, make soil more closely knit, and then make measurement more accurate; Demarcate the reference of buret through being provided with in addition, when the record water discharge, can remove to calibrate water discharge, further improved the characteristic degree of accuracy of native water with the evaporation number of demarcating the buret measurement as water evaporates.
Below in conjunction with accompanying drawing the utility model is elaborated.
Description of drawings
Fig. 1 is the structural representation of the utility model.
The 4th, air intake opening, the 5th, bolt, the 6th, upper cover plate, the 7th, pressure vessel tank body, the 8th, middle pressing plate; The 9th, pedestal, the 10th, raise foot rest, the 11st, freeing port, the 12nd, drainpipe, the 13rd, soil sample; The 14th, potter's clay plate, the 15th, stiffening plate, the 16th, spacer pin, the 17th, draining buret; The 18th, demarcate buret, the 19th, threeway water discharging valve, the 20th, platen, the 21st, the in line mouth of a river.
Embodiment
Referring to Fig. 1; A kind of native water family curve tester comprises in the structure that pedestal 9, bottom are provided with the barrel-shaped tank body 7 of pressure-bearing of potter's clay plate 14, and tank body 7 is sealed on the pedestal 9 by the upper cover plate that has air intake opening 46; Tank body 7 bottoms freeing port 11 is set; Freeing port 11 is communicated with draining buret 17 by drainpipe 12, below potter's clay plate 14, sets up stiffening plate with holes 15, and stiffening plate 15 is positioned in the groove of pedestal 9.
In tester, also be provided with and demarcate buret 18, demarcate buret 18 and be positioned on the platen 20 with draining buret 17.Draining buret 17 is selected small-bore buret for use with demarcation buret 18; Measuring accuracy is improved; Because the water discharge value under each stage pressure in the draining buret 17 is floated, therefore can infer the evaporation number of draining buret 17 under each stage pressure through the evaporation number of observation demarcation buret 18 water yields.
Sealing position at pressure vessel tank body 7 and upper cover plate 6 also is provided with the resilient seal cushion rubber, guarantees the sealing of pressure vessel tank body 7.
In drainpipe 12, be provided with the threeway water discharging valve 19 and the in line mouth of a river 21.Threeway water discharging valve 19 can be a solenoid valve, realizes control automatically through management circuit.
Below pedestal 9, also be provided with and raise foot rest 10.
The utility model is when concrete the measurement, and measuring process comprises:
A, carry out soil sample 13 saturated, subsequent use in advance;
B, pressure vessel tank body 7 is raised on the foot rest 10 through pedestal 9, bolt 5 and middle pressing plate 8 mounts; In pressure vessel tank body 7, inject distilled water, drainpipe 12 connects with corresponding draining buret 17 respectively, and is fixing by spacer pin 16; Draining buret 17 is located by stand 20 with demarcation buret 18; Upper cover plate 6 is closed, and it is saturated to carry out for potter's clay plate 14, the first use general saturated 3～10 days;
C, close freeing port 12 and saturated soil sample is put on the potter's clay plate 14 of pressure vessel tank body 7, and to tight, the sealing of container 7 lids;
D, adjusting air pump pressure are treated the stable back of draining record water discharge to original pressure, and the water yield evaporation number that reference is simultaneously demarcated in the buret 18 is calibrated, and with next pressure rating of air pump pressure modulation;
E, regulate pressure rating step by step, until transferring to the afterbody pressure rating, and under each pressure rating, write down water discharge respectively;
F, according at the water discharge of different pressures grade, draw native water family curve.
Claims (6)
1. native water family curve tester; Comprise in the structure that pedestal (9), bottom are provided with the barrel-shaped tank body of pressure-bearing (7) of potter's clay plate (14); Tank body (7) is sealed on the pedestal (9) by the upper cover plate that has air intake opening (4) (6), tank body (7) bottom freeing port (11) is set, freeing port (11) is communicated with draining buret (17) by drainpipe (12); It is characterized in that: set up stiffening plate with holes (15) in potter's clay plate (14) below, stiffening plate (15) is positioned in the groove of pedestal (9).
2. a kind of native water family curve tester according to claim 1 is characterized in that: in tester, also be provided with and demarcate buret (18), demarcate buret (18) and be positioned on the platen (20) with draining buret (17).
3. a kind of native water family curve tester according to claim 1; It is characterized in that: pressing plate (8) in the middle of on the pressure vessel tank body (7) of tester, also being provided with; Middle pressing plate (8) is spacing on the step trough at pressure vessel tank body (7) middle part, and is fastening by bolt (5).
4. a kind of native water family curve tester according to claim 1 is characterized in that: the sealing position at pressure vessel tank body (7) and upper cover plate (6) also is provided with the resilient seal cushion rubber.
5. a kind of native water family curve tester according to claim 1 is characterized in that: in drainpipe (12), be provided with threeway water discharging valve (19) and the in line mouth of a river (21).
6. a kind of native water family curve tester according to claim 1 is characterized in that: also be provided with in pedestal (9) below and raise foot rest (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120271620U CN202141719U (en) | 2011-07-28 | 2011-07-28 | Soil water characteristic curve tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120271620U CN202141719U (en) | 2011-07-28 | 2011-07-28 | Soil water characteristic curve tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202141719U true CN202141719U (en) | 2012-02-08 |
Family
ID=45552774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120271620U Expired - Fee Related CN202141719U (en) | 2011-07-28 | 2011-07-28 | Soil water characteristic curve tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202141719U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830215A (en) * | 2012-09-03 | 2012-12-19 | 中国矿业大学 | High-pressure clay consolidating instrument |
| CN103743883A (en) * | 2013-12-23 | 2014-04-23 | 石家庄铁道大学 | Device and method for testing unsaturation soil hysteresis curve |
| CN105527190A (en) * | 2016-01-18 | 2016-04-27 | 江苏圣泰环境科技股份有限公司 | Device and method for determining soil water characteristic curve under constant pressure |
| US9453829B2 (en) | 2013-12-23 | 2016-09-27 | Shijiazhuang Tiedao University | Soil property test device |
| CN111238565A (en) * | 2019-12-06 | 2020-06-05 | 重庆交通大学 | Device and method for testing unsaturated geotechnical characteristic relation |
-
2011
- 2011-07-28 CN CN201120271620U patent/CN202141719U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102830215A (en) * | 2012-09-03 | 2012-12-19 | 中国矿业大学 | High-pressure clay consolidating instrument |
| CN102830215B (en) * | 2012-09-03 | 2014-10-29 | 中国矿业大学 | High-pressure clay consolidating instrument |
| CN103743883A (en) * | 2013-12-23 | 2014-04-23 | 石家庄铁道大学 | Device and method for testing unsaturation soil hysteresis curve |
| CN103743883B (en) * | 2013-12-23 | 2016-01-13 | 石家庄铁道大学 | A kind of apparatus and method of testing unsaturated soil hysteresis loop |
| US9453829B2 (en) | 2013-12-23 | 2016-09-27 | Shijiazhuang Tiedao University | Soil property test device |
| CN105527190A (en) * | 2016-01-18 | 2016-04-27 | 江苏圣泰环境科技股份有限公司 | Device and method for determining soil water characteristic curve under constant pressure |
| CN111238565A (en) * | 2019-12-06 | 2020-06-05 | 重庆交通大学 | Device and method for testing unsaturated geotechnical characteristic relation |
| CN111238565B (en) * | 2019-12-06 | 2022-05-10 | 重庆交通大学 | Test method for testing unsaturated geotechnical characteristic relation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105588796B (en) | A kind of device of accurate quick measure soil permeability coefficient | |
| CN202141719U (en) | Soil water characteristic curve tester | |
| CN104074210B (en) | Pile foundation side friction shop experiment device and test method thereof | |
| CN203894141U (en) | Permeation coefficient tester of permeable concrete standard cube test specimen | |
| CN103245770B (en) | Electroosmosis-vacuum-loading combined consolidometer | |
| CN103604734B (en) | The unsaturated soil rain infiltration simulation system that raininess is controlled | |
| CN204125898U (en) | The experimental rig of Dam Foundation Seepage under a kind of failure under earthquake action | |
| CN101915721B (en) | Test method for simulating variation of permeability coefficient of foundation pit precipitation | |
| CN202928929U (en) | Consolidation and penetration test device for soil under chemical-stress coupling effect | |
| CN102809642B (en) | Method for determining hydrogeological parameters of aquitard | |
| CN104266941A (en) | Indoor rainfall infiltration test simulation system | |
| CN103940718B (en) | A kind of on-the-spot permeability experimental facility of discrete material | |
| CN206557205U (en) | A kind of soil body loaded swelling experiment cutting ring | |
| CN104865371A (en) | Experiment device and method for consolidation of soft foundation under vacuum condition | |
| CN204255803U (en) | Indoor rainfall infiltration Experimental mimic system | |
| CN103743883B (en) | A kind of apparatus and method of testing unsaturated soil hysteresis loop | |
| CN103175949B (en) | Device and method for directly testing coarse-grained soil rubber membrane penetration on volume change | |
| CN208255004U (en) | A kind of vertical imitative experimental appliance of transportation of pollutant | |
| CN205656097U (en) | A intelligent test device that is used for analysis of soil body layering infiltration characteristic | |
| CN204944999U (en) | A kind of simple and easy humidification soil sample pore water pressure real-time test device | |
| CN204789259U (en) | Device of test silt osmotic coefficient | |
| CN203630014U (en) | Rain-intensity-controllable unsaturated soil rainwater infiltration simulation system | |
| CN201915970U (en) | Draining type segment lining model test box | |
| CN102401733B (en) | Test platform for long term working performance research model of novel plastic drainage plate | |
| CN205506291U (en) | Indoor soil pressure cell tank prover |
Legal Events
| 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: 20120208 Termination date: 20160728 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |