CN206459928U - Fill the device for testing permeability coefficient that big particle diameter rubber lamellar body hits real soil - Google Patents
Fill the device for testing permeability coefficient that big particle diameter rubber lamellar body hits real soil Download PDFInfo
- Publication number
- CN206459928U CN206459928U CN201621123867.7U CN201621123867U CN206459928U CN 206459928 U CN206459928 U CN 206459928U CN 201621123867 U CN201621123867 U CN 201621123867U CN 206459928 U CN206459928 U CN 206459928U
- Authority
- CN
- China
- Prior art keywords
- water tank
- particle diameter
- soil
- lamellar body
- compaction cylinder
- 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
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The device for testing permeability coefficient that big particle diameter rubber lamellar body hits real soil is filled the utility model discloses a kind of, including water tank, one support is set in described water tank, one layer of geotechnique is equipped with described cradle top to weave cotton cloth, described geotechnique weave cotton cloth top be provided with bottomless uncovered compaction cylinder, and the bottom of described compaction cylinder is weaved cotton cloth clamping by a neck and geotechnique, the lower sidewall of described water tank is provided with main drainpipe, the end of described main drainpipe is provided with multiple contour and concordant branch drainpipe, it is used to contain soil sample in the compaction cylinder, and at the cross-section of river of soil sample top and water tank bottom is equipped with a water pressure sensor being connected with data handling system.
Description
Technical field
The utility model is related to one kind and hits real native device for testing permeability coefficient, more particularly, to the big particle diameter rubber of one kind admixture
Lamellar body hits the device for testing permeability coefficient of real soil, belongs to field of civil engineering.
Background technology
According to domestic and international research, junked tire lamellar body (Tire-Derived Aggregate, letter that size is 50~300mm
Claiming TDA) lightweight, water penetration is strong, antifreeze and antidetonation, it is adaptable to filled out as reinforcement abutment on soft foundation, side slope, roadbed
Material, construction and maintenance speed are fast, and cost is low.
For convenience of constructing and improving the utilization rate to big particle diameter junked tire lamellar body, material-taking on-site has carried out a series of experiments
Checking, such fills the compound soil body of big particle diameter junked tire lamellar body by correct proportioning, and engineering use can be met by hitting after reality
The requirement of material, but its permeance property need to pass through strict experiment measure, just can apply in Practical Project.
At present, the instrument species and test method for determining infiltration coefficient are a lot.Instrument for determining infiltration coefficient, because existing
The shortcomings of some permeameter generally existings experiment size is smaller, particle size that is can determining is limited, and utilized in domestic project
Fill the example of the big particle diameter sheet rubber bluk recombination soil body seldom, and the soil sample size is larger, thus utility model it is a set of can it is simple,
System, accurate determine fill large-scale measure device and assay method that big particle diameter rubber lamellar body hits real native infiltration coefficient,
It is very important.
Utility model content
The utility model provide it is a kind of determine the big particle diameter rubber lamellar body of admixture hit real native infiltration coefficient test device and
Method, the advantage of the device：Simple structure, it is easy to operate, real infiltration integration is hit, in the case where not disturbing compacted soil samples,
Can directly by the use of large-scale compaction test cylinder itself as infiltration instrument can Accurate Determining fill big particle diameter rubber lamellar body and hit real soil infiltration
Coefficient.
The utility model realizes that its first utility model is adopted the technical scheme that：
It is a kind of to fill the device for testing permeability coefficient that big particle diameter rubber lamellar body hits real soil, including water tank, in described water tank
One support of interior setting, is equipped with one layer of geotechnique in described cradle top and weaves cotton cloth, and described geotechnique weaves cotton cloth top provided with bottomless
The compaction cylinder of uncovered, and the bottom of described compaction cylinder weaved cotton cloth clamping by a neck and geotechnique, the side wall of described water tank
Bottom is provided with main drainpipe, and the end of described main drainpipe is provided with multiple contour and concordant branch drainpipe, described to hit reality
Cylinder is used to contain at soil sample, and the soil sample top cross-section of river and water tank bottom is equipped with the water being connected with data handling system
Pressure sensor.
Further, described compaction cylinder, its volume and height are than the volume of water tank and highly small.
Further, it is in series with water valve on described branch drainpipe.
A kind of use said determination fills the test device that big particle diameter rubber lamellar body hits real native infiltration coefficient, determines admixture big
The method that particle diameter hits real native infiltration coefficient, its step is：
Step 1 Preparatory work of experiment
The compound soil body for filling big particle diameter rubber lamellar body is layered in compaction cylinder and hits real sample preparation, with neck compaction cylinder bottom
End is weaved cotton cloth clamping with geotechnique, is placed on by branch in water tank, slow into water tank to add water to full, is stood to soil sample and is soaked saturation；
Step 2 permeability test
Two water pressure sensors A, B are individually positioned in the compaction cylinder soil sample top cross-section of river and water tank bottom, suitably
The water valve size of multiple drainpipes is adjusted, control water tank carries out permeability test with appropriate drainage speed；Water pressure sensor
The infiltration information input data processing system of collection is subjected to information processing；
Step 3 osmotic coefficient investigating
The dynamic change of sensor the real time measure hydraulic pressure, is handled through data handling system in experiment, can be by the dynamic of hydraulic pressure
Change is output as the change of water level h on compaction cylinder soil sample topi, the change of water level h of water tank bottomo, and with reference to varying head test method(s) be
It can obtain filling the osmotic coefficient k that big particle diameter rubber lamellar body hits real soil.
The beneficial effects of the utility model are as follows：
The utility model provides a kind of determine and fills the test device that big particle diameter rubber lamellar body hits real native infiltration coefficient, should
The advantage of device：Simple structure, it is easy to operate, real infiltration integration is hit, can be directly sharp in the case where not disturbing compacted soil samples
With large-scale compaction test cylinder itself as infiltration instrument can Accurate Determining fill big particle diameter rubber lamellar body and hit real native infiltration coefficient.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are these
Some embodiments of utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to these accompanying drawings.
Fig. 1 is the front view of permeability apparatus；
Fig. 2 is permeability apparatus top view；
In figure：1 water tank, the compaction cylinder of 2 bottomless uncovereds, 3 necks, 4 geotechniques are weaved cotton cloth, 5 supports, 6 main drainpipes, 7 drainings
Pipe, 8 data handling systems, 9 collecting containers, A, B, water pressure sensor.
Embodiment
The utility model is described in detail below in conjunction with the accompanying drawings：
At present, the method for test soil body osmotic coefficient mainly has two kinds of test in situ and laboratory test, wherein from examination
Two kinds of hydrostatic head method and variable water level method can be divided into by testing laboratory test in principle.Constant head test method is exactly in whole experiment process
Holding head is a constant, it is adaptable to determine the infiltration coefficient of the big sandy soil of water penetration；During variable water level method is exactly experimentation
Head is being changed over time always, it is adaptable to determine the infiltration coefficient of the small cohesive soil of water penetration.Because such compound soil body oozes
Water table gradient is smaller in experiment thoroughly, and head is also small, and Darcy laws are obeyed in the flowing of water, and its water penetration is between sandy soil and viscosity
Between soil, change always with reference to head in Practical Project, be based on Practical Project and reflect the big particle diameter of admixture conscientiously
Rubber lamellar body hits the permeability of real soil, and test method of the present utility model preferentially uses variable water level method.
For variable water level method, the infiltration coefficient survey that big particle diameter rubber lamellar body hits real soil is filled the utility model discloses a kind of
Trial assembly is put, including water tank 1, and a support 5 is set in described water tank 1, and one layer of geotechnique is equipped with the described top of support 5
Weave cotton cloth 4, described geotechnique 4 tops of weaving cotton cloth are provided with the compaction cylinders 2 of bottomless uncovered, and the bottom of described compaction cylinder 2 passes through one
Neck 3 and geotechnique weave cotton cloth 4 clampings, and the lower sidewall of described water tank is provided with main drainpipe 5, the end of described main drainpipe
Multiple contour and concordant branch drainpipe 6 is provided with, collecting container 9 is set in the discharge outlet of branch branch drainpipe 6, in described branch
Water valve is in series with drainpipe.It is used to contain at soil sample, and the soil sample top cross-section of river in the compaction cylinder and water tank bottom is equal
Provided with the water pressure sensor being connected with data handling system 8 A and B.
Further, for compaction cylinder and water tank, it is desirable to which the volume and height of compaction cylinder are than the volume and height of water tank
It is small, to ensure that compaction cylinder is immersed in water tank all the time before draining.
Before on-test, because compaction cylinder is immersed in water tank always, the compaction cylinder soil sample top cross-section of river, water tank bottom are measured
The head in portion is equal；After on-test, because of the retardation of the compound soil body in permeability apparatus, the head on compaction cylinder soil sample top
Change is significantly less than water tank bottom change of water level ho；If the head difference that any time t acts on soil sample two ends in process of the test is
Δ h, h can directly be used by being computed processing Δ hi、hoRepresent, i.e. Δ h=hi-ho；After the dt periods, water level decreasing d in compaction cylinder
(Δ h), then the seepage discharge of inflow soil sample is in the dt times：
dVε=ad (Δ h)
In formula, a-compaction cylinder basal area.
According to Darcy's law, the seepage discharge of outflow soil sample is in the time：
In formula, L-soil sample length；K-infiltration coefficient；- water table gradient.
According to the current principle of continuity, there should be dVe=dV0, i.e.,
Both members are each integrated
So as to obtain the infiltration coefficient of soil
Use common logarithm instead to represent, then above formula can be written as
Second utility model of the present utility model is to provide one kind and hit using the big particle diameter rubber lamellar body of device measure admixture
The method of testing of real soil infiltration coefficient, the method for testing is easy to operate, and energy Accurate Determining fills big particle diameter rubber lamellar body and hits real soil
Infiltration coefficient, including herein below：
A, Preparatory work of experiment
The compound soil body for filling big particle diameter rubber lamellar body is layered in compaction cylinder and hits real sample preparation, with neck compaction cylinder bottom
End is weaved cotton cloth clamping with geotechnique, is placed on by support in water tank, slow into water tank to add water to full, is stood full to soil sample immersion
With.
B, permeability test
Two water pressure sensors A, B are individually positioned in the compaction cylinder soil sample top cross-section of river, water tank bottom, it is appropriate to adjust
The water valve size of 3 branch outlet pipes is saved, control water tank carries out permeability test with appropriate drainage speed.Water pressure sensor connects
After logical computer system, the infiltration information input data acquisition system of collection is subjected to information processing, directly hitting in the system
Real cylinder prepares saturation soil sample, it is to avoid the disturbance to soil sample, in real time the hydraulic pressure of the measurement soil sample cross-section of river and water tank bottom.
C, osmotic coefficient investigating
The dynamic change of sensor the real time measure hydraulic pressure, is handled through data handling system in experiment, can be by the dynamic of hydraulic pressure
Change is output as the change of water level h on compaction cylinder soil sample topi, the change of water level h of water tank bottomo, and with reference to varying head test method(s) be
It can obtain filling the osmotic coefficient k that big particle diameter rubber lamellar body hits real soil.
Specific operating process is as follows：
(1) the compound soil body for filling big particle diameter rubber lamellar body is layered in compaction cylinder and hits real sample preparation, reality is hit with neck handle
Cylinder bottom and geotechnique weaves cotton cloth clamping, is placed on by support in water tank, slow into water tank to add water to full, stands to soil sample immersion
Saturation.
(2) two water pressure sensors A, B are individually positioned in the compaction cylinder soil sample top cross-section of river, water tank bottom, connect
Logical computer, starts hydraulic testing system.
(3) the water valve size of 3 branch outlet pipes is suitably adjusted, control water tank carries out infiltration examination with appropriate drainage speed
Test, it is desirable to which the drainage speed of water tank can not be too fast, in order to avoid water tank empties water before infiltration occurs for soil sample, cause test failure.
(4) dynamic change of Computer the real time measure hydraulic pressure is tested every time, and the processing through data collecting system can be by water
The dynamic change of pressure is output as the dynamic change of head, that is, measures the change of water level h on compaction cylinder soil sample topi, water tank bottom
Change of water level ho, and be that can obtain filling the infiltration coefficient that big particle diameter rubber lamellar body hits real soil with reference to varying head test method(s).
Data processing method is as follows：
The data exported according to computer pressure measuring system, draw with hiFor ordinate, t is the h of abscissai- t relations are bent
Line；With hoFor ordinate, t is the h of abscissao- t relation curves.By selecting several groups of different values, their institutes are measured respectively
The time t needed, calculates their osmotic coefficient k, then averages, be used as the infiltration coefficient of the soil sample.
It is not new to this practicality although above-mentioned embodiment of the present utility model is described with reference to accompanying drawing
The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel need not pay the various modifications that creative work can make or deform still in protection model of the present utility model
Within enclosing.
Claims (3)
1. a kind of fill the device for testing permeability coefficient that big particle diameter rubber lamellar body hits real soil, it is characterised in that including water tank, in institute
One support is set in the water tank stated, one layer of geotechnique is equipped with described cradle top and weaves cotton cloth, described geotechnique weaves cotton cloth top
Compaction cylinder provided with bottomless uncovered, and the bottom of described compaction cylinder weaved cotton cloth clamping, described water by a neck and geotechnique
The lower sidewall of case is provided with main drainpipe, and the end of described main drainpipe is provided with multiple contour and concordant branch drainpipe,
The compaction cylinder is used to contain at soil sample, and the soil sample top cross-section of river and water tank bottom is equipped with one and data handling system
Connected water pressure sensor.
2. the device for testing permeability coefficient that big particle diameter rubber lamellar body hits real soil is filled as claimed in claim 1, it is characterised in that
Described compaction cylinder, its volume and height are than the volume of water tank and highly small.
3. the device for testing permeability coefficient that big particle diameter rubber lamellar body hits real soil is filled as claimed in claim 1, it is characterised in that
Water valve is in series with described branch drainpipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621123867.7U CN206459928U (en) | 2016-10-14 | 2016-10-14 | Fill the device for testing permeability coefficient that big particle diameter rubber lamellar body hits real soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621123867.7U CN206459928U (en) | 2016-10-14 | 2016-10-14 | Fill the device for testing permeability coefficient that big particle diameter rubber lamellar body hits real soil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206459928U true CN206459928U (en) | 2017-09-01 |
Family
ID=59690896
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621123867.7U Expired - Fee Related CN206459928U (en) | 2016-10-14 | 2016-10-14 | Fill the device for testing permeability coefficient that big particle diameter rubber lamellar body hits real soil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206459928U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248558A (en) * | 2016-10-14 | 2016-12-21 | 山东大学 | Fill big particle diameter rubber lamellar body and hit device for testing permeability coefficient and the method for real soil |
| CN115308110A (en) * | 2022-08-09 | 2022-11-08 | 河南省地质调查院 | Method and device for measuring permeability coefficient of variable water head |
-
2016
- 2016-10-14 CN CN201621123867.7U patent/CN206459928U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106248558A (en) * | 2016-10-14 | 2016-12-21 | 山东大学 | Fill big particle diameter rubber lamellar body and hit device for testing permeability coefficient and the method for real soil |
| CN115308110A (en) * | 2022-08-09 | 2022-11-08 | 河南省地质调查院 | Method and device for measuring permeability coefficient of variable water head |
| CN115308110B (en) * | 2022-08-09 | 2024-01-30 | 河南省地质调查院 | Variable water head permeability coefficient determination method and device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105588796B (en) | A kind of device of accurate quick measure soil permeability coefficient | |
| CN103308438B (en) | Modular soil body permeability tester | |
| CN102980842B (en) | System and method for testing anisotropy permeability coefficient of layered coarse-grained soil body | |
| CN206192785U (en) | Native seepage flow of saturation and creep coupling triaxial test device | |
| CN206756653U (en) | Determine head and varying head soil permeability coefficient measure combination unit | |
| CN203772699U (en) | Three-dimensional penetration siltation simulated test device of dam foundation soil body | |
| CN203672756U (en) | Indoor constant head test device for anisotropic soil bidirectional permeability coefficient | |
| CN102141503B (en) | Device and method for testing permeability coefficient of rainwater garden filling | |
| CN203191284U (en) | Porous material permeability coefficient tester | |
| CN107247018A (en) | Unsaturated soil moisture based on Internet of Things infiltrates automatic measurement system and method | |
| CN103604734B (en) | The unsaturated soil rain infiltration simulation system that raininess is controlled | |
| CN104020047A (en) | Solidification and permeation combined testing device and method | |
| CN106644890A (en) | Device for measuring soil sample permeability coefficient in indoor soil engineering test | |
| CN206459928U (en) | Fill the device for testing permeability coefficient that big particle diameter rubber lamellar body hits real soil | |
| CN217180509U (en) | Combined core displacement experimental device for representing reservoir interference degree | |
| CN206710263U (en) | A kind of infiltrative test instrument for studying soil | |
| CN203101231U (en) | Fast testing device for seepage coefficient of macroporous concrete | |
| CN207908318U (en) | Piping experimental rig in a kind of unstable aggressivity | |
| CN106248558A (en) | Fill big particle diameter rubber lamellar body and hit device for testing permeability coefficient and the method for real soil | |
| CN203630014U (en) | Rain-intensity-controllable unsaturated soil rainwater infiltration simulation system | |
| CN206609758U (en) | One kind is used for air water high-pressure osmosis device in laboratory soil test | |
| CN108120644A (en) | The creep test device and method of duct rock sample under a kind of gas pressure | |
| CN203259447U (en) | Light-operated pressurized rapid penetration testing device | |
| CN207502350U (en) | A kind of crack soil two dimension infiltration flat plate model experimental rig | |
| CN110296927A (en) | A kind of rock fracture permeability test device and method applying unidirectional confining pressure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170901 Termination date: 20181014 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |