CN106226337A - A kind of loess wetting and drying cycle apparatus for CT scan - Google Patents
A kind of loess wetting and drying cycle apparatus for CT scan Download PDFInfo
- Publication number
- CN106226337A CN106226337A CN201610827976.5A CN201610827976A CN106226337A CN 106226337 A CN106226337 A CN 106226337A CN 201610827976 A CN201610827976 A CN 201610827976A CN 106226337 A CN106226337 A CN 106226337A
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- CN
- China
- Prior art keywords
- support plate
- cutting ring
- locating slot
- sample
- drying
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N23/00—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00
- G01N23/02—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material
- G01N23/04—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material
- G01N23/046—Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons, not covered by groups G01N3/00 – G01N17/00, G01N21/00 or G01N22/00 by transmitting the radiation through the material and forming images of the material using tomography, e.g. computed tomography [CT]
Abstract
The invention discloses a kind of loess wetting and drying cycle apparatus for CT scan.It is characterized in that having on support plate that spill support plate fixes groove, spill support plate fixes the centrally disposed support plate locating slot of groove, aluminium alloy cutting ring and cutting ring sample are placed sequentially in support plate and fix in groove, the cutting ring locating slot on aluminium alloy cutting ring and cutting ring sample and support plate locating slot align center.This device solves sample CT scan problem under drying and watering cycle different phase, Compacted Loess can be carried out and air-dry the dry wetting-drying test under humidification conditions of dripping, and the real-time CT scan test of deformation under drying and watering cycle effect, saturated yielding etc., provide a kind of new technological means for disclosing the development law of the micro-microscopical structure of Rock And Soil under drying and watering cycle effect.
Description
Technical field
The present invention relates to the test device of a kind of sample, specifically refer to a kind of loess drying and watering cycle for CT scan and fill
Put.
Background technology
Under the effect of air agent (mainly rainfall, evaporation and temperature), in Practical Project Roadbed Soil often in
Alternation of wetting and drying state.Intensity, deformation and the micro structure of compacted fill can be caused appreciable impact by long-term alternation of wetting and drying effect.For
Inquiring into the inherent mechanism of the damage of Rock And Soil under drying and watering cycle effect, scholars are with regard to the differentiation of Rock And Soil micro structure under dry and wet effect
Rule has carried out a series of research.The engineering character of soil is largely controlled by its microscopic system.Say from engineering viewpoint, soil
Fine sight structural research mainly has two purposes: one is the deep pool studying qualitative some engineering characteristic of explanation according to micro-microscopical structure
Source, thus explain some special behavior (such as frost heave, saturated yielding etc.) of the soil body；Two is the place by micro-Meso-structure observation data
Reason, sets up the quantitative relationship between the Macroscopic physical mechanical behavior parameter that microstructure parameters is corresponding, and then it is grand to understand the soil body
See the fine sight mechanism of characteristic variations.Along with the development of CT scan technology, the fine sight change of sample can be swept by CT
Tracing, as being caught, utilizes CT image and CT numerical analysis, is changed by the microscopical structure before and after loess drying and watering cycle and damages with it
Hindering relationship, the fine sight mechanistic features of loess macroscopic properties change can carry out the analysis of exploration, this just needs
Develop a kind of special loess wetting and drying cycle apparatus for CT scan, before and after coordinating CT scan to complete loess drying and watering cycle
Microscopical structure change the test that damages with it.
Summary of the invention
In view of above-mentioned, the purpose of the present invention aims to provide a kind of loess wetting and drying cycle apparatus for CT scan to solve Huang
The problems such as the support of soil sample CT scan under drying and watering cycle effect fixes and positions.
The object of the present invention is achieved like this:
A kind of loess wetting and drying cycle apparatus for CT scan, is mainly fixed groove, support plate locating slot, aluminum by support plate, spill support plate
Alloy cutting ring, cutting ring sample, cutting ring locating slot form.Have on support plate that spill support plate fixes groove, spill support plate is fixed in groove
It is circular that the heart arranges support plate locating slot, aluminium alloy cutting ring and cutting ring sample, is placed sequentially in support plate and fixes in groove, aluminium alloy cutting ring
With the cutting ring locating slot on cutting ring sample and support plate locating slot align center.
The present invention has the advantages that:
(1) the cutting ring locating slot on this device aluminium alloy cutting ring and cutting ring sample aligns with support plate locating slot, puts into the scanning of CT machine
Bed is scanned, and solves sample CT scan problem at different control point under drying and watering cycle effect, greatly improves dress sample
Convenience, shorten the test period；
(2) this device have employed the design structure of stagewise cutting ring sample, can once place 4 cutting ring samples and be scanned, can divide
Carry out the drying and watering cycle process of each sample the most simultaneously；Cutting ring locating slot aligns with support plate locating slot simultaneously, positions line with CT machine
Overlap, the location of sample during convenient scanning, it is to avoid due to the inaccurate test error caused in location.
(3) this device pedestal uses foams plastic material, and this quality of materials absorptance is relatively low, can be preferably X-ray
Being penetrated, the material of cutting ring is that LY12 aluminium alloy both ensure that the mechanical strength made needed for Compacted Loess sample, in turn ensure that ring
Cutter sample can be penetrated by Medical CT, improves the quality of image during CT test.
(4) apply the present invention can carry out Compacted Loess and air-dry the wetting-drying test under the dry-humidification conditions that drips, and
The real-time CT scan test of deformation under drying and watering cycle effect, saturated yielding etc., micro-for disclosing Rock And Soil under drying and watering cycle effect
The development law of microscopical structure provides a kind of new technological means.
Accompanying drawing explanation
Fig. 1 is the three dimensional structure schematic diagram of the present invention
In figure: lower carrier plate (1), support plate fix groove (2), support plate locating slot (3), aluminium alloy cutting ring (4), cutting ring sample (5), cutting ring
Locating slot (6).
Detailed description of the invention
With embodiment, technical scheme is elaborated again below in conjunction with the accompanying drawings:
A kind of loess wetting and drying cycle apparatus for CT scan, mainly by support plate 1, spill support plate fix groove 2, support plate locating slot 3,
Aluminium alloy cutting ring 4, cutting ring sample 5, cutting ring locating slot 6 form.Have on support plate 1 that spill support plate fixes groove 2, spill support plate is fixed
The centrally disposed support plate locating slot 3 of groove 2, aluminium alloy cutting ring 4 and cutting ring sample 5 are circular, are placed sequentially in support plate and fix groove 2
In, the cutting ring locating slot 6 on aluminium alloy cutting ring 4 and cutting ring sample 5 and support plate locating slot 3 align center.
Loess wetting-drying test process is as follows: air-drying loess sample moisture content is 1%, and be humidified moisture content 18%, for compacting
DegreeK=95% sample saturated aqueous rate；Loop termination moisture control is 13%, i.e. optimum moisture content.During test, first by aluminium alloy
Cutting ring 4 takes off, and prepares the cutting ring sample 5 of the moisture content needed for requirement of experiment and dry density with core cutter method.The aluminum prepared is closed
Gold cutting ring 4 and cutting ring sample 5 are put into the support plate of support plate 1 and are fixed in groove 2 so that it is natural air drying, until soil sample is dried to moisture content
When 1%, support plate 1 is put on CT lathe together with cutting ring sample 5, open CT machine location line, adjust support plate locating slot 3 and ring
CT machine location line is placed in the position of cutter locating slot 5 alignment, make the position of support plate locating slot 3 and cutting ring locating slot 5 align center with
Location laser rays carries out CT scan after overlapping.Humidification process uses and drips, and aluminium alloy cutting ring 4 and cutting ring sample 5 is removed together,
Carry out respectively dripping and weighing in real time at upper and lower surface, after reaching humidification moisture content 18%, cutting ring sample 5 is wrapped up with preservative film
Close soil sample maintenance 24 h and guarantee that sample porous media removes preservative film the most afterwards, aluminium alloy cutting ring 4 and cutting ring sample 5 are depended on
Secondary support plate of putting into is fixed and is carried out natural air drying in groove 2, during until moisture content is control point 13%, is put together with sample by support plate 1
Enter to repeat on CT lathe the operation of above-mentioned CT scan.During every loop control point, repeat aforesaid operations, and record process of the test
Parameter.
Claims (1)
1., for the loess wetting and drying cycle apparatus of CT scan, mainly fixed groove (2), support plate by support plate (1), spill support plate fixed
Position groove (3), aluminium alloy cutting ring (4), cutting ring sample (5), cutting ring locating slot (6) form, it is characterized in that having spill on support plate (1)
Support plate fixes groove (2), spill support plate fixes the centrally disposed support plate locating slot (3) of groove (2), aluminium alloy cutting ring (4) and cutting ring examination
Sample (5) is circular, is placed sequentially in support plate and fixes in groove (2), and, the cutting ring on aluminium alloy cutting ring (4) and cutting ring sample (5)
Locating slot (6) and support plate locating slot (3) align center.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610827976.5A CN106226337A (en) | 2016-09-18 | 2016-09-18 | A kind of loess wetting and drying cycle apparatus for CT scan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610827976.5A CN106226337A (en) | 2016-09-18 | 2016-09-18 | A kind of loess wetting and drying cycle apparatus for CT scan |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106226337A true CN106226337A (en) | 2016-12-14 |
Family
ID=58076371
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610827976.5A Pending CN106226337A (en) | 2016-09-18 | 2016-09-18 | A kind of loess wetting and drying cycle apparatus for CT scan |
Country Status (1)
| Country | Link |
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| CN (1) | CN106226337A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896123A (en) * | 2017-04-09 | 2017-06-27 | 中国科学院寒区旱区环境与工程研究所 | A kind of medical CT scan small sample locating support |
| CN109459333A (en) * | 2018-06-08 | 2019-03-12 | 中国科学院南京土壤研究所 | Portable soil water content and bulk density measuring device and soil moisture content and bulk density measurement method |
| CN113030435A (en) * | 2021-03-04 | 2021-06-25 | 西安建筑科技大学 | Soil body vertical fracture model observation test device and test method |
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| CN202878159U (en) * | 2012-10-19 | 2013-04-17 | 上海联影医疗科技有限公司 | Tool device of computed tomography (CT) bulb tube |
| CN104297267A (en) * | 2013-07-16 | 2015-01-21 | 中国科学院寒区旱区环境与工程研究所 | Cylindrical disk for quantitatively measuring fault density of rock and soil on CT-machine scanning bed and method thereof |
| CN204479451U (en) * | 2015-04-10 | 2015-07-15 | 重庆大学 | A kind of device for rock drying and watering cycle |
| CN204612805U (en) * | 2015-04-29 | 2015-09-02 | 李其然 | A kind of cutting ring sample weighing bracket |
| CN204924991U (en) * | 2015-09-14 | 2015-12-30 | 长江水利委员会长江科学院 | Reducing triaxial sample that can be used to CT scan holds an appearance section of thick bamboo |
| CN205006908U (en) * | 2015-10-01 | 2016-02-03 | 付民峰 | CT image appearance |
| CN205103249U (en) * | 2015-11-12 | 2016-03-23 | 中国科学院南京土壤研究所 | Farmland soil coefficient of linear expansion surveys device |
| CN205514654U (en) * | 2016-03-21 | 2016-08-31 | 无锡市中医医院 | CT formation of image arm fixing device |
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2016
- 2016-09-18 CN CN201610827976.5A patent/CN106226337A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202878159U (en) * | 2012-10-19 | 2013-04-17 | 上海联影医疗科技有限公司 | Tool device of computed tomography (CT) bulb tube |
| CN104297267A (en) * | 2013-07-16 | 2015-01-21 | 中国科学院寒区旱区环境与工程研究所 | Cylindrical disk for quantitatively measuring fault density of rock and soil on CT-machine scanning bed and method thereof |
| CN204479451U (en) * | 2015-04-10 | 2015-07-15 | 重庆大学 | A kind of device for rock drying and watering cycle |
| CN204612805U (en) * | 2015-04-29 | 2015-09-02 | 李其然 | A kind of cutting ring sample weighing bracket |
| CN204924991U (en) * | 2015-09-14 | 2015-12-30 | 长江水利委员会长江科学院 | Reducing triaxial sample that can be used to CT scan holds an appearance section of thick bamboo |
| CN205006908U (en) * | 2015-10-01 | 2016-02-03 | 付民峰 | CT image appearance |
| CN205103249U (en) * | 2015-11-12 | 2016-03-23 | 中国科学院南京土壤研究所 | Farmland soil coefficient of linear expansion surveys device |
| CN205514654U (en) * | 2016-03-21 | 2016-08-31 | 无锡市中医医院 | CT formation of image arm fixing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106896123A (en) * | 2017-04-09 | 2017-06-27 | 中国科学院寒区旱区环境与工程研究所 | A kind of medical CT scan small sample locating support |
| CN109459333A (en) * | 2018-06-08 | 2019-03-12 | 中国科学院南京土壤研究所 | Portable soil water content and bulk density measuring device and soil moisture content and bulk density measurement method |
| CN113030435A (en) * | 2021-03-04 | 2021-06-25 | 西安建筑科技大学 | Soil body vertical fracture model observation test device and test method |
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