CN105866384A - Pore water salinity replacement and consolidation test device - Google Patents
Pore water salinity replacement and consolidation test device Download PDFInfo
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- CN105866384A CN105866384A CN201610389772.8A CN201610389772A CN105866384A CN 105866384 A CN105866384 A CN 105866384A CN 201610389772 A CN201610389772 A CN 201610389772A CN 105866384 A CN105866384 A CN 105866384A
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Abstract
A pore water salinity replacement and consolidation test device comprises a cavity which is defined by a base, an inner ring cylinder and a pressurizing piston and used for containing a soil sample, and is further provided with a pore water salinity replacement and consolidation test unit composed of an adjustable frame bar and a top cover. A sealing ring is arranged on a combination face of the inner ring cylinder and the base, and two U-shaped grooves for containing O-shaped rings are formed in the inner wall of the inner ring cylinder. A vent hole and a drain hole are formed in the top of the pressurizing piston are communicated with the cavity containing the soil sample, and the exterior of the vent hole and the exterior of the drain hole are communicated with air. Two channels are formed in the base. The pressurizing piston is connected with a suction flask, and the suction flask is connected with the pressurizing piston and a suction negative pressure air pump. According to the pore water salinity replacement and consolidation test device, adjustable negative pressure can be exerted, pore water can be collected for content detection, pore water replacement can be achieved through pressure adjusting and controlling, it is not required to disturb the soil sample, a consolidation compression test can be carried out immediately after a pore water salinity replacement test is finished, and the related rate is obtained.
Description
Technical field
The invention belongs to underground space engineering test field, relate generally to a kind of pore water salinity displacement and consolidation assay device.
Technical background
The subsoil water salinity transition impact for soil body engineering properties is not accounted at present about Binhai New District intact soft clay research great majority, small part considers that pore water salinity focuses mostly on for the test that soil sample mechanical characteristic affects and uses artificial perturbation's manipulated soil and physical index aspect, lack the research to undisturbed soil engineering characteristic, and the aspect such as soil body compression property is the most just disturbed in remodeling process, bigger on result of study impact.It is highly desirable to for the foregoing reasons launch for the test to soft clay mechanical characteristic of the pore water salinity.But can not carry out pore water salinity displacement and the assay device of follow-up consolidation at present.
Traditional consolidation apparatus is only capable of carrying out consolidation test, it is impossible to soil sample is carried out hole water displacement test.Traditional permeameter can measure the infiltration coefficient of soil sample; but soft clay infiltration coefficient is the least; and level once has error to infiltration coefficient with on-the-spot actual forced status to vertical, conventional constant head or variable head permeability test is often caused to differ bigger for the test result of soft clay with actual value；And traditional penetration instrument is limited due to function, it is impossible to sample is applied controllable negative pressure, also the pore water in soil sample cannot be carried out content detection or displacement.
By pertinent literature and patent retrieval, finding to relate at present the Patents of tradition consolidation testing device transformation, main thought concentrates on the measuring pore water pressure of consolidation stage.And relate to infiltration and the Patents of consolidation device transformation, only merely infiltration box and consolidation box are simply united two into one, penetration stage is only retained to original gas permeability measurement function, do not account for the displacement of pore water salinity, the detection of aqueous solution component content and apply the transformation of the aspects such as controllable negative pressure.Meanwhile, assay device sealing problem always perplexs the unsolved problem of this type of assay device.
Summary of the invention
It is an object of the invention to provide a kind of pore water salinity displacement and consolidation assay device, this device can apply controllable negative pressure, it is also possible to collects pore water and carries out content detection, can realize pore water by pressure controlling simultaneously and replace.And soil sample is without disturbed, at once can carry out consolidating compression test and obtaining related data after having carried out the displacement test of pore water salinity at once, for research soft clay pore water salinity, the impact of soil body mechanical property be provided safeguard.
For achieving the above object, the present invention can take following technical proposals: a kind of pore water salinity displacement and consolidation assay device, including the cavity holding soil sample surrounded by base, endocyclic tube and pressurizing piston three；Wherein, endocyclic tube is arranged in base, and pressurizing piston can pump along endocyclic tube inwall, it is characterised in that: it is furnished with pore water salinity displacement test device；It is provided with on sealing ring, and the outer wall of endocyclic tube to be shaped with on the faying face of described endocyclic tube and base and presents a theatrical performance as the last item on a programme, by screwing the fastening bolt on base by base and fastening of presenting a theatrical performance as the last item on a programme, the inwall of endocyclic tube is shaped with twice for being placed with the U-lag of round section joint ring；Described pressurizing piston top is shaped with steam vent and all connects with the cavity holding soil sample with osculum, and twice hole ft connection air；It is provided with two passes on described base, one end of two passes is all through with the cavity holding soil sample, the other end of left channel installs three-way valve, and connecting outside head and the water tank in order to control hole water wash by rubber tube, another of right channel brings out base position installation drain tap for controlling the aerofluxus of base when hole water wash starts；Described pressurizing piston is connected with a bottle,suction, and this bottle,suction top silica gel plug is closed, and respectively by rubber tube and pressurizing piston with can take out negative pressure air pump and be connected, connection control valve respectively on rubber tube；Described pore water salinity displacement test device is made up of adjustable hack lever and top cover, and adjustable hack lever is made up of cross bar and two vertical poles, and cross bar is connected with top cover.
It is shaped with locating slot in the middle part of above-mentioned base end face.
Above-mentioned pressurizing piston top is concave panel, is full of pore towards permeable stone side and can be used to drainage exhaust.
Being provided with permeable rock layers on the upper surface of above-mentioned base and the bottom surface of pressurizing piston, the steam vent at described pressurizing piston top is connected with the cavity holding soil sample by permeable rock layers respectively with osculum；One end of two passes in described base all extends to permeable rock layers from the bottom of base, and through by permeable rock layers and the cavity holding soil sample.
Above-mentioned top cover top is flat, towards soil sample one side uniform tiny hole is set in order to drainage exhaust.
Advantages of the present invention is embodied in the following aspects:
1, the displacement test of pore water salinity can be carried out；
2, controllable negative pressure can be applied, and can freely regulate and control the numerical value of negative pressure；
3, container tightness is good, it is ensured that all pore waters in pore water replacement process are collected completely, it is possible to use auxiliary measuring instrument and pore water solution carries out the tests such as solute, content, pH value, electrical conductivity；
4, pore water displacement and subsequent compression consolidation test can be carried out after soil sample charging apparatus, it is not necessary to carrying out second extraction or disturbance, test data more truly can be examined；
5, same soil sample can be circulated load loading, and carry out permeability test, test data obtains more, and soil sample can make full use of；
6, same device can be carried out top cover replacing, with the requirement reaching hole water displacement test and soil sample compression test is changed freely；
7, UNICOM and blocking-up, the multiple external instrument of convenient connection be can freely control by three-way valve or two-way valve, sample deformation, bottom pore water pressure dissipation freely measured；
8, soil sample can be collected at consolidation stage displacement, it is simple to carry out further soil sample unloading rebound law study.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is that pore water salinity replaces test device schematic diagram.
Detailed description of the invention
As shown in the figure, pore water salinity displacement and consolidation assay device of the present invention, the endocyclic tube 2 that including base 1, is arranged in base and can carry out, along endocyclic tube inwall, the pressurizing piston 3 that pumps, base 1, endocyclic tube 2 and pressurizing piston 3 composition hold the cavity 4 of soil sample, put into sample to be detected in cavity 4.Hereinafter all parts is described in detail:
One, it is designed with annular groove on the bottom surface of endocyclic tube 2, inside arranges sealing ring 5, the outer wall of endocyclic tube 2 is designed with presents a theatrical performance as the last item on a programme 6, make on it is fastened on and presents a theatrical performance as the last item on a programme by the fastening bolt latch closure being screwed in the compound land of base 1, guarantee the sealing between base 1 and endocyclic tube 2, also it is shaped with twice U-lag on endocyclic tube inwall, in it, is placed with round section joint ring 7.
Two, pressurizing piston 3 top is concave panel, is full of pore towards permeable stone side and can be used to drainage exhaust, stable to guarantee the pressurization of consolidation test loading system；Pressurizing piston top arranges steam vent 8 and osculum 9 simultaneously, twice hole connects inside by permeable rock layers 14 and holds the cavity of soil sample, ft connection air, steam vent 8 effect is to ensure that the gas in hole discharged in loading process by sample, and gas can utilize nut to block after discharging simultaneously；The effect of osculum 9 is to ensure that and is connected by rubber tube with bottle,suction.
Three, it is provided with permeable rock layers 14 on the bottom surface of base 1 upper surface and pressurizing piston 3, is used for blocking soil sample and pollutes base 1 and pressurizing piston 3, may insure that in the circulation of pore water displacement and consolidation test pore water and hole, the guiding of gas is discharged simultaneously.
Four, twice passage 10,11 it is shaped with in base 1.The left end of passage 10 installs three-way valve 12, and connected in order to the outside head 17 and the water tank 18 that control hole water wash by rubber tube, other measuring pore water pressure devices can also be connected, and two-way valve 21 is installed on rubber tube opens and block in order to controlling, right side extends the permeable rock layers 14 bottom connecting from the bottom of base 1, and through by permeable rock layers 14 and the cavity 4 holding soil sample.The left end of passage 11 extends the permeable rock layers 14 connected bottom base 1 from the bottom of base 1, and it is through by permeable rock layers 14 and the cavity 4 holding soil sample, right-hand member connects space outerpace in order to discharge the portion gas entering the soil body in pore water salinity replacement process with displacement aqueous solution, and installs two-way valve 21 and open and block in order to controlling.
It is provided with locating slot 15 in the middle part of base 1 bottom surface, is designed with blocking simultaneously, be placed conveniently within all types of consolidation apparatus with the use of being compressed consolidation test.
Five, bottle,suction 19 top arranges opening, close with silica gel plug, opening at two (opening diameter 9.5mm) is had on silica gel plug, 10mm English system rubber tube is inserted on one opening part, this rubber tube is connected by three-way valve 21 with the osculum 9 in pressurizing piston 3, being used for freely controlling blocking-up and the UNICOM of pore water pressure during collecting between pressurizing piston 3 and bottle,suction 19, bottle,suction 19 is used for collecting applying negative pressure and soil sample carries out the pore water solution in pore water salt leaching replacement process.Another opening part is connected with adjustable negative pressure air pump 20 of taking out by 10mm English system rubber tube, rubber tube is installed three-way valve 21, this valve 21 for freely controlling the blocking-up between air pump 20 and bottle,suction 19 and UNICOM.
Six, the present invention is separately furnished with pore water salinity displacement test device, and this device is made up of adjustable hack lever 16 and top cover 22.When carrying out the displacement test of pore water salinity, adjustable hack lever 16 can be used to coordinate top cover 22 to replace pressurizing piston 3 and to carry out correlation test.Described adjustable hack lever is made up of cross bar and two vertical poles, and cross bar connects top cover, and top cover top is flat, towards soil sample one side uniform tiny hole is set in order to drainage exhaust.Threeway 23 is installed for being connected with other equipment on described top cover.
Claims (5)
1. a pore water salinity displacement and consolidation assay device, including by base, endocyclic tube and pressurizing piston three
What person surrounded holds the cavity of soil sample；Wherein, endocyclic tube is arranged in base, and pressurizing piston can be along internal ring
Cylinder inwall pumps, it is characterised in that: it is furnished with pore water salinity displacement test device；Institute
State to be provided with on sealing ring, and the outer wall of endocyclic tube to be shaped with on the faying face of endocyclic tube and base and present a theatrical performance as the last item on a programme, pass through
Screw fastening bolt on base by base and fastening of presenting a theatrical performance as the last item on a programme, the inwall of endocyclic tube is shaped with twice for placing
There is the U-lag of round section joint ring；Described pressurizing piston top be shaped with steam vent and osculum all with hold soil sample
Cavity connects, and twice hole ft connection air；Two passes it is provided with on described base, two passes
One end is all through with the cavity holding soil sample, and the other end of left channel installs three-way valve, and passes through rubber
Pipe connects outside head and water tank in order to control hole water wash, and another of right channel brings out base position peace
Dress drain tap is used for controlling the aerofluxus of base when hole water wash starts；Described pressurizing piston and a bottle,suction
Connecting, this bottle,suction top silica gel plug is closed, and passes through rubber tube and pressurizing piston respectively and can take out negative pressure
Air pump connects, and rubber tube connects respectively and controls valve；Described pore water salinity displacement test device is by can
Mode hack lever and top cover composition, adjustable hack lever is made up of cross bar and two vertical poles, and cross bar is connected with top cover.
A kind of pore water salinity displacement and consolidation assay device the most according to claim 1, it is characterised in that:
It is shaped with locating slot in the middle part of above-mentioned base end face.
A kind of pore water salinity displacement and consolidation assay device the most according to claim 1, it is characterised in that:
Above-mentioned pressurizing piston top is concave panel, is full of pore towards permeable stone side and can be used to drainage exhaust.
A kind of pore water salinity displacement and consolidation assay device the most according to claim 1, it is characterised in that:
Permeable rock layers, described pressurizing piston top it is provided with on the upper surface of above-mentioned base and the bottom surface of pressurizing piston
Steam vent connected with the cavity holding soil sample by permeable rock layers respectively with osculum；In described base two
One end of bar passage all extends to permeable rock layers from the bottom of base, and by permeable rock layers with hold soil sample
Cavity is through.
A kind of pore water salinity displacement and consolidation assay device the most according to claim 1, it is characterised in that:
Above-mentioned top cover top is flat, towards soil sample one side uniform tiny hole is set in order to drainage exhaust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610389772.8A CN105866384B (en) | 2016-06-03 | 2016-06-03 | A kind of pore water salinity displacement and consolidation experimental rig |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610389772.8A CN105866384B (en) | 2016-06-03 | 2016-06-03 | A kind of pore water salinity displacement and consolidation experimental rig |
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| Publication Number | Publication Date |
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| CN105866384A true CN105866384A (en) | 2016-08-17 |
| CN105866384B CN105866384B (en) | 2018-03-30 |
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| CN201610389772.8A Active CN105866384B (en) | 2016-06-03 | 2016-06-03 | A kind of pore water salinity displacement and consolidation experimental rig |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124366A (en) * | 2016-08-31 | 2016-11-16 | 温州大学 | The undisturbed soil sampling device used in undisturbed soil contaminant transportation test method under load action and test |
| CN109115671A (en) * | 2018-10-17 | 2019-01-01 | 中交第航务工程局有限公司 | A kind of soil body penetration consolidation device and its application method with water cavity |
| CN109187213A (en) * | 2018-09-21 | 2019-01-11 | 同济大学 | Concrete-high-pressure solid bentonite combined system condition simulation experiment method and device |
| CN113848117A (en) * | 2021-09-26 | 2021-12-28 | 浙江大学 | Shaft ground hot drainage consolidation test device |
| CN113865988A (en) * | 2021-09-26 | 2021-12-31 | 浙江大学 | Soft soil thermal consolidation model test device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202256113U (en) * | 2011-10-18 | 2012-05-30 | 师旭超 | Experimental container for detecting infiltration and solidification of soil body |
| CN103411869A (en) * | 2013-07-26 | 2013-11-27 | 合肥工业大学 | Negative pressure osmosis test device |
| CN105547787A (en) * | 2016-02-04 | 2016-05-04 | 桂林理工大学 | Remodeled saturated soil and water chemical leaching testing device and method thereof |
| CN205665244U (en) * | 2016-06-03 | 2016-10-26 | 天津城建大学 | Hole water salinity replacement consolidation test device |
-
2016
- 2016-06-03 CN CN201610389772.8A patent/CN105866384B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202256113U (en) * | 2011-10-18 | 2012-05-30 | 师旭超 | Experimental container for detecting infiltration and solidification of soil body |
| CN103411869A (en) * | 2013-07-26 | 2013-11-27 | 合肥工业大学 | Negative pressure osmosis test device |
| CN105547787A (en) * | 2016-02-04 | 2016-05-04 | 桂林理工大学 | Remodeled saturated soil and water chemical leaching testing device and method thereof |
| CN205665244U (en) * | 2016-06-03 | 2016-10-26 | 天津城建大学 | Hole water salinity replacement consolidation test device |
Non-Patent Citations (2)
| Title |
|---|
| 孙丽云等: "渗透固结试验装置的改进", 《实验力学》 * |
| 师旭超等: "渗透固结试验装置的研制", 《岩石力学与工程学报》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124366A (en) * | 2016-08-31 | 2016-11-16 | 温州大学 | The undisturbed soil sampling device used in undisturbed soil contaminant transportation test method under load action and test |
| CN109187213A (en) * | 2018-09-21 | 2019-01-11 | 同济大学 | Concrete-high-pressure solid bentonite combined system condition simulation experiment method and device |
| CN109187213B (en) * | 2018-09-21 | 2021-07-02 | 同济大学 | Performance simulation test method and device for concrete-high compaction bentonite combined system |
| CN109115671A (en) * | 2018-10-17 | 2019-01-01 | 中交第航务工程局有限公司 | A kind of soil body penetration consolidation device and its application method with water cavity |
| CN109115671B (en) * | 2018-10-17 | 2023-10-17 | 中交第一航务工程局有限公司 | Soil body infiltration consolidation device with water cavity and application method thereof |
| CN113848117A (en) * | 2021-09-26 | 2021-12-28 | 浙江大学 | Shaft ground hot drainage consolidation test device |
| CN113865988A (en) * | 2021-09-26 | 2021-12-31 | 浙江大学 | Soft soil thermal consolidation model test device and method |
| CN113848117B (en) * | 2021-09-26 | 2022-07-26 | 浙江大学 | Vertical shaft foundation hot drainage consolidation test device |
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| CN105866384B (en) | 2018-03-30 |
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