CN106855527A - One kind permeates up the coaxial test barrel caliberating devices of method TDR and scaling method - Google Patents
One kind permeates up the coaxial test barrel caliberating devices of method TDR and scaling method Download PDFInfo
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- CN106855527A CN106855527A CN201611149704.0A CN201611149704A CN106855527A CN 106855527 A CN106855527 A CN 106855527A CN 201611149704 A CN201611149704 A CN 201611149704A CN 106855527 A CN106855527 A CN 106855527A
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- test barrel
- coaxial
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- coaxial test
- tdr
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
Abstract
The coaxial test barrel caliberating devices of method TDR and scaling method are permeated up the invention discloses one kind.Described device includes coaxial test barrel, permeable base, electronic scale, permeable stone, geneva bottle, probe, coaxial converter and TDR100 transmitters；Coaxial test barrel and permeable base are bolted, coaxial test barrel is connected with TDR Test system, permeable base is connected by water pipe with geneva bottle.Reality is hit in the placement in layers in coaxial test barrel of ground sample, is supplied water to device by geneva bottle, and sample moisture content is obtained by the change of electronic scale quality, and sample dielectric constant is obtained by TDR Test system.The present invention is combined by by coaxial test barrel with permeability apparatus, the characteristics of overcoming traditional scaling method and waste time and energy, realizes the TDR Fast Calibrations for being compacted Rock And Soil.
Description
Technical field
The present invention relates to Geotechnical Engineering field, more particularly to one kind permeate up the coaxial test barrel caliberating devices of method TDR and
Scaling method.
Background technology
Electromagnetic wave time domain reflectometry (time domain reflectometry, TDR) is much larger than using the dielectric constant of water
Rock And Soil solid particle and air this feature, determine Rock And Soil moisture content, with speed by the electromagnetic parameter for testing Rock And Soil
The advantages of spending fast, high precision, be capable of achieving automation continuous monitoring.
In Geotechnical Engineering, traditional scaling method is usually one group of sample for preparing different water cut gradient, carries out TDR Test
Afterwards, calibrating parameters are obtained by parameter fitting.Sample only corresponds to that test data point is more time-consuming to be taken in conventional method
Power.In agricultural, often up seeped water from sample bottom by permeability apparatus under the conditions of constant head, change sample mean aqueous
Rate, multigroup moisture content and respective dielectric constant data can be obtained using a sample.Its caliberating device is usually three pins or two
Probe stylus add PVC sleeve pipes and corresponding permeability apparatus, it is adaptable to soft soil property in agricultural.But for Geotechnical Engineering, particularly
But have that Media density is high in the soil-stone material medium of compacting, probe is difficult to the problem squeezed into.Accordingly, it would be desirable to develop a kind of mark
Determine the rapidly and efficiently demarcation that device is applied to compacting rock-soil material.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the prior art, there is provided one kind permeates up the coaxial test barrel marks of method TDR
Determine device and scaling method.There can be preferable applicability to compacting Rock And Soil, can rapidly and efficiently realize that rock-soil material TDR is related
Parameter calibration.
The purpose of the present invention is achieved through the following technical solutions：One kind permeates up the coaxial test barrel marks of method TDR
Determine device, the device include coaxial test barrel, permeable base, electronic scale, permeable stone, geneva bottle, probe, coaxial converter and
TDR100 transmitters；The permeable base upper surface is provided with the circular groove for placing permeable stone, if the bottom of the circular groove is provided with
Dry concentric annular groove；One perforate is arranged at the permeable base bottom, is connected with geneva bottle by water pipe, and sealing is set on water pipe
Folder, for the turnover water of control device；Ring washer is placed on the permeable stone, for anti-locking apparatus leak gas leakage；It is described
Coaxial test barrel is positioned on ring washer, and the lateral wall of coaxial test barrel is carved with the groove for placing rubber ring, method near bottom
Blue disk is positioned on rubber ring, is fixed ring flange, rubber ring and permeable base by bolt；The electronic scale of stating is placed in
Under permeable base, the mass change for testing whole device；Compacting rock-soil material, probe are filled in the coaxial test barrel layering
By in the coaxial test barrel of hammer driven；The coaxial converter is placed in coaxial test barrel top, is connected by coaxial cable
TDR100 transmitters.
Further, the internal diameter with diameter greater than coaxial test barrel of the permeable stone.
Further, concentric some annular grooves are cut into the structure for communicating with each other by cross.
Further, the coaxial test barrel internal diameter is 10cm, is highly 17cm, and lateral wall is carved with the 3cm of bottom
Groove, the depth of the annular groove is 3cm.
It is a kind of using the method that the coaxial test barrel caliberating devices of method TDR are demarcated is permeated up, comprise the following steps：
(1) the device quality w1 of sample of not adding an examination of is measured by electronic scale；
(2) according to test requirements document, sample layering is hit and enters coaxial test barrel in fact, squeeze into probe, record quality w2 now
With sample initial aqueous rate w0；
(3) according to test requirements document, tongs toward infiltration in device is opened, tongs is closed after reaching target inflow, remembered
Record quality w3；
(4) TDR Test is carried out, sample electromagnetic parameter waveform is obtained；
(5) repeat step and the electromagnetic parameter in the case of acquisition sample different water cut；
(6) sample dry ground quality w4=(w2-w1)/(1+w0), sample w5=w3-w2+ containing water quality (w2-w1) * are calculated
W0/ (1+w0), sample moisture content w6=w5/w4；
(7) the different moisture content of sample and each data point of corresponding electromagnetic parameter are obtained, according to rock-soil material moisture content and
Experience calibration formula between Rock And Soil electromagnetic parameter, fitting obtains each corresponding parametric values in empirical equation, completes to demarcate.
The invention has the advantages that：The present invention adds permeability apparatus by coaxial test barrel bottom, overcomes
The shortcoming wasted time and energy in traditional scaling method, has the advantages that once experiment can obtain great number tested data point, while right
Compacting Rock And Soil has preferable applicability, and simple structure, principle are understandable, easy to utilize.
Brief description of the drawings
Fig. 1 is to permeate up the coaxial test barrel caliberating device schematic diagrames of method TDR；
Fig. 2 is coaxial test barrel and permeable base connection diagram；
Fig. 3 is that coaxial test barrel is connected exploded view with permeable base；
Fig. 4 is permeable base detail view；
In figure：1st, geneva bottle, 2, water pipe, 3, tongs, 4, permeable base, 5, electronic scale, 6, permeable stone, 7, air ring
Circle, 8, rubber ring, 9, coaxial test barrel, 10, probe, 11, coaxial converter, 12, coaxial cable, 13, TDR100 transmitters,
14th, data wire, 15, computer, 16, ring flange.
Specific embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As Figure 1-4, one kind that the present invention is provided permeates up the coaxial test barrel caliberating devices of method TDR, the device bag
Include coaxial test barrel 9, permeable base 4, electronic scale 5, permeable stone 6, geneva bottle 1, probe 10, coaxial converter 11 and TDR100 hairs
Penetrate instrument 13；The upper surface of the permeable base 4 is provided with the circular groove for placing permeable stone 6, and the bottom of the circular groove is provided with some same
The annular groove of the heart；One perforate is arranged at the bottom of the permeable base 4, is connected with geneva bottle 1 by water pipe 2, and sealing is set on water pipe 2
Folder 3, for the turnover water of control device；Ring washer 7 is placed on the permeable stone 6, for anti-locking apparatus leak gas leakage, institute
State the internal diameter with diameter greater than coaxial test barrel 9 of permeable stone 6；The coaxial test barrel 9 is positioned on ring washer 7, coaxial to survey
The lateral wall for trying cylinder 9 is carved with the groove for placing rubber ring 8 near bottom, and ring flange 16 is positioned on rubber ring 8, will by bolt
Ring flange 16, rubber ring 8 and permeable base 4 are fixed；The electronic scale 5 of stating is placed under permeable base 4, whole for testing
The mass change of device；Compacting rock-soil material is filled in the layering of coaxial test barrel 9, and probe 10 is coaxially tested by hammer driven
In cylinder 9；The coaxial converter 11 is placed in the top of coaxial test barrel 9, and TDR100 transmitters 13 are connected by coaxial cable 12；
TDR100 transmitters 13 connect computer 15 by data wire 14.
Further, concentric some annular grooves are cut into the structure for communicating with each other by cross.
Further, the internal diameter of coaxial test barrel 9 is 10cm, is highly 17cm, and lateral wall is carved with the 3cm of bottom
Groove, the depth of the annular groove is 3cm.
Implement the present invention when carrying out rock-soil material TDR water cut test rating tests, its calibration process includes：
(1) the device quality w1 of sample of not adding an examination of is measured by electronic scale (5)；
(2) according to test requirements document, sample layering is hit and enters coaxial test barrel 9 in fact, squeeze into probe 10, record quality now
W2 and sample initial aqueous rate w0；
(3) according to test requirements document, tongs 3 toward infiltration in device is opened, tongs 3 is closed after reaching target inflow,
Recording quality w3；
(4) TDR Test is carried out, sample electromagnetic parameter waveform is obtained；
(5) repeat step (3) and (4), obtain the electromagnetic parameter in the case of sample different water cut；
(6) sample dry ground quality w4=(w2-w1)/(1+w0), sample w5=w3-w2+ containing water quality (w2-w1) * are calculated
W0/ (1+w0), sample moisture content w6=w5/w4；
(7) the different moisture content of sample and each data point of corresponding electromagnetic parameter are obtained, according to rock-soil material moisture content and
Experience calibration formula between Rock And Soil electromagnetic parameter, fitting obtains each corresponding parametric values in empirical equation, completes to demarcate.
Claims (5)
1. one kind permeates up the coaxial test barrel caliberating devices of method TDR, it is characterised in that the device include coaxial test barrel (9),
Permeable base (4), electronic scale (5), permeable stone (6), geneva bottle (1), probe (10), coaxial converter (11) and TDR100 transmittings
Instrument (13)；Permeable base (4) upper surface is provided with the circular groove for placing permeable stone (6), if the bottom of the circular groove is provided with
Dry concentric annular groove；One perforate is arranged at permeable base (4) bottom, is connected with geneva bottle (1) by water pipe (2), water pipe
(2) tongs (3) is set on, for the turnover water of control device；Ring washer (7) is placed on the permeable stone (6), is used for
Anti- locking apparatus leak gas leakage；The coaxial test barrel (9) is positioned on ring washer (7), and the lateral wall of coaxial test barrel (9) is leaned on
The groove for placing rubber ring (8) is carved with nearly bottom, and ring flange (16) is positioned on rubber ring (8), by bolt by ring flange
(16), rubber ring (8) and permeable base (4) are fixed；The electronic scale (5) of stating is placed under permeable base (4), for testing
The mass change of whole device；Compacting rock-soil material is filled in coaxial test barrel (9) layering, and probe (10) is by hammer driven
In coaxial test barrel (9)；The coaxial converter (11) is placed in coaxial test barrel (9) top, is connected by coaxial cable (12)
TDR100 transmitters (13).
2. the one kind according to claim 1 permeates up the coaxial test barrel caliberating devices of method TDR, it is characterised in that described
The internal diameter with diameter greater than coaxial test barrel (9) of permeable stone (6).
3. the one kind according to claim 1 permeates up the coaxial test barrel caliberating devices of method TDR, it is characterised in that will be same
Some annular grooves of the heart are cut into the structure for communicating with each other by cross.
4. the one kind according to claim 1 permeates up the coaxial test barrel caliberating devices of method TDR, it is characterised in that described
Coaxial test barrel (9) internal diameter is 10cm, is highly 17cm, and lateral wall is carved with groove at the 3cm of bottom, the annular groove
Depth is 3cm.
5. a kind of using the method that the coaxial test barrel caliberating devices of method TDR are demarcated is permeated up described in claim 1, it is special
Levy and be, comprise the following steps：
(1) the device quality w1 of sample of not adding an examination of is measured by electronic scale (5)；
(2) according to test requirements document, sample layering is hit and enters coaxial test barrel (9) in fact, squeeze into probe (10), record quality now
W2 and sample initial aqueous rate w0；
(3) according to test requirements document, tongs (3) toward infiltration in device is opened, tongs (3) is closed after reaching target inflow,
Recording quality w3；
(4) TDR Test is carried out, sample electromagnetic parameter waveform is obtained；
(5) repeat step (3) and (4), obtain the electromagnetic parameter in the case of sample different water cut；
(6) sample dry ground quality w4=(w2-w1)/(1+w0), sample w5=w3-w2+ containing water quality (w2-w1) * w0/ (1 is calculated
+ w0), sample moisture content w6=w5/w4；
(7) the different moisture content of sample and each data point of corresponding electromagnetic parameter are obtained, according to rock-soil material moisture content and ground
Experience calibration formula between body electromagnetic parameter, fitting obtains each corresponding parametric values in empirical equation, completes to demarcate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611149704.0A CN106855527A (en) | 2016-12-13 | 2016-12-13 | One kind permeates up the coaxial test barrel caliberating devices of method TDR and scaling method |
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| CN201611149704.0A CN106855527A (en) | 2016-12-13 | 2016-12-13 | One kind permeates up the coaxial test barrel caliberating devices of method TDR and scaling method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037064A (en) * | 2017-12-26 | 2018-05-15 | 华测检测认证集团股份有限公司 | Multitask multi-temperature section is carried out at the same time automotive electronics component reliability test device |
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| JP2007132061A (en) * | 2005-11-09 | 2007-05-31 | Takenaka Komuten Co Ltd | Method for inhibiting liquefaction of ground, and liquefaction inhibition performance maintaining equipment |
| CN101738360A (en) * | 2009-10-16 | 2010-06-16 | 同济大学 | Time domain reflection unsaturated permeameter and method for measuring unsaturated permeability coefficient |
| CN202393677U (en) * | 2011-11-11 | 2012-08-22 | 东南大学 | Water migration measuring device based on technology of time domain reflection method |
| CN102944577A (en) * | 2012-11-08 | 2013-02-27 | 苏州南智传感科技有限公司 | Soil moisture sensor calibration device and method based on time domain transmission technology |
| CN103308435A (en) * | 2013-05-29 | 2013-09-18 | 浙江大学 | Device for testing characteristic curves and permeability coefficients of unsaturated coarse particle soil and water |
| CN103728322A (en) * | 2014-01-15 | 2014-04-16 | 武汉大学 | Time domain reflectometry (TDR) system and method applicable to expanded high saline soil moisture measurement |
| CN206411053U (en) * | 2016-12-13 | 2017-08-15 | 浙江大学 | One kind permeates up the coaxial test barrel caliberating devices of method TDR |
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2016
- 2016-12-13 CN CN201611149704.0A patent/CN106855527A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007132061A (en) * | 2005-11-09 | 2007-05-31 | Takenaka Komuten Co Ltd | Method for inhibiting liquefaction of ground, and liquefaction inhibition performance maintaining equipment |
| CN1877315A (en) * | 2006-07-06 | 2006-12-13 | 西北工业大学 | Measurement method for seepage characteristic of metal-based composite material prepared by vacuum negative pressure impregnation |
| CN101738360A (en) * | 2009-10-16 | 2010-06-16 | 同济大学 | Time domain reflection unsaturated permeameter and method for measuring unsaturated permeability coefficient |
| CN202393677U (en) * | 2011-11-11 | 2012-08-22 | 东南大学 | Water migration measuring device based on technology of time domain reflection method |
| CN102944577A (en) * | 2012-11-08 | 2013-02-27 | 苏州南智传感科技有限公司 | Soil moisture sensor calibration device and method based on time domain transmission technology |
| CN103308435A (en) * | 2013-05-29 | 2013-09-18 | 浙江大学 | Device for testing characteristic curves and permeability coefficients of unsaturated coarse particle soil and water |
| CN103728322A (en) * | 2014-01-15 | 2014-04-16 | 武汉大学 | Time domain reflectometry (TDR) system and method applicable to expanded high saline soil moisture measurement |
| CN206411053U (en) * | 2016-12-13 | 2017-08-15 | 浙江大学 | One kind permeates up the coaxial test barrel caliberating devices of method TDR |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108037064A (en) * | 2017-12-26 | 2018-05-15 | 华测检测认证集团股份有限公司 | Multitask multi-temperature section is carried out at the same time automotive electronics component reliability test device |
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