CN106116276A - A kind of gunite concrete that can observe tunnel surrounding rock displacement - Google Patents
A kind of gunite concrete that can observe tunnel surrounding rock displacement Download PDFInfo
- Publication number
- CN106116276A CN106116276A CN201610427328.0A CN201610427328A CN106116276A CN 106116276 A CN106116276 A CN 106116276A CN 201610427328 A CN201610427328 A CN 201610427328A CN 106116276 A CN106116276 A CN 106116276A
- Authority
- CN
- China
- Prior art keywords
- parts
- tunnel surrounding
- surrounding rock
- quantum dot
- concrete
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00034—Physico-chemical characteristics of the mixtures
- C04B2111/00146—Sprayable or pumpable mixtures
- C04B2111/00155—Sprayable, i.e. concrete-like, materials able to be shaped by spraying instead of by casting, e.g. gunite
Abstract
The invention discloses a kind of gunite concrete that can observe tunnel surrounding rock displacement, include the four pin quantum dot fiber additives for observing tunnel surrounding rock displacement, its raw material mass mixture ratio is as follows: cement: 80 ~ 150 parts, rubble: 200 ~ 350 parts, sand: 100 ~ 150 parts, accelerator: 3 ~ 6 parts, four pin quantum dot fiber solutions: 5 ~ 10 parts.Should can reinforce for tunnel surrounding as normal concrete by concrete containing four pin quantum dot fiber additives, can be used for again observing tunnel surrounding rock displacement.During observation tunnel surrounding rock displacement, an excitation source is used to irradiate the surface of shotcrete layer.Contrast Strength Changes situation of fluorescence at the concrete surface each point that two different time points are observed, can measure the displacement information of tunnel surrounding.
Description
Technical field
The invention belongs to tunnel wall rock deformation monitoring and measuring technology field, be specifically related to one and can observe tunnel surrounding rock displacement
Gunite concrete, can be used for New Austrian Tunneling Method construction Tunnel Engineering.
Background technology
In Tunnel Engineering, since New Austrian Tunneling Method technology is come out, the displacement that during measurement cavern excavation, country rock occurs
The most gradually come into one's own.Surrounding rock displacement monitoring information is applied in surrouding rock deformation cracking evaluation is predicted, such as, it was predicted that wall rock loosening
Circle scope, rock burst and large deformation, and the time of tunnel surrounding secondary supporting can be optimized.
The relative shift that the displacement of wall rock information gathered in engineering practice at present is typically between measuring point, measures letter
Breath is how many by measuring point number quantitative limitation, it is difficult to reflect surrounding rock displacement situation on the whole.It addition, tunnel surrounding routine displacement
Monitoring, it is generally required to the equipment of measurement, particularly field displacement monitoring, in addition to needing to use special displacement meter, also has and buries difficulty underground
Shortcoming.Therefore, it is thus achieved that a kind of can measure surrounding rock displacement on the whole, tunnel surrounding rock displacement can be observed efficiently and easily again
Method, has important function to improving existing tunnel surrouding rock deformation monitoring measurement level.
Summary of the invention
For technical problem present in prior art, the technical problem to be solved is just to provide a kind of can be seen
Surveying the gunite concrete of tunnel surrounding rock displacement, it can be reinforced for tunnel surrounding as common gunite concrete, again can
Tunnel surrounding rock displacement is observed the most quickly and easily after gunite concrete reinforcing terminates.
The technical problem to be solved is realized by such technical scheme, it use cement, rubble,
Sand, accelerator and four pin quantum dot fiber solutions are uniformly mixed, and its quality proportioning is as follows:
Cement: 80 ~ 150 parts,
Rubble: 200 ~ 350 parts,
Sand: 100 ~ 150 parts,
Accelerator: 3 ~ 6 parts,
Four pin quantum dot fiber solutions: 5 ~ 10 parts.
The operation principle of the present invention is: according to the quality proportioning of range above, after cement, rubble, sand being stirred, add
Enter accelerator and four pin quantum dot fiber solutions, be configured to the concrete containing four pin quantum dot fiber additives, this coagulation
Soil can quickly solidify after being sprayed at tunnel surrounding.When tunnel surrounding because off-load and stresses re-distribution produce displacement, tunnel surrounding
The shotcrete layer on surface is also subjected to displacement, thus the relative displacement of shotcrete layer surface each point can make to be mixed therein
Quantum dot fiber produce strain change.
According to " Tetrapod Nanocrystals as Fluorescent Stress Probes of
Electrospun Nanocomposites ", Shilpa N. Raja, Andrew C. K. Olson, Kari
Thorkelsson, Nano Letters, 2013,13,3,915 3922, (four pin quantum dot poly nano-composite fibers
Fluorescence pressure detector, Shilpa N. Raja, Andrew C. K. Olson, Kari Thorkelsson, nanometer bulletin,
2013,13 phases page 3,915 3922) in recorded a kind of irradiative nano-composite fiber, when this fiber is by external force
Can deform, the fluorescence intensity of four pin quantum dots can change therewith.Quantum dot fiber at the concrete surface each point of the present invention
Fluorescence intensity changes the relative displacement with gunite concrete surface each point, can pass through experimental calibration, draw gunite concrete surface
The fluorescence intensity of the quantum dot fiber at each point changes relational expression and the curve of the relative displacement with gunite concrete surface each point.
The present invention is fabricated to reference block and loads on uniaxial compression instrument by experimental calibration exactly, uses at loading procedure
Excitation source irradiates, and is observed gathering fluorescence intensity with spectrogrph, uses the crack width of test block to represent injection mixed simultaneously
The relative displacement of solidifying soil surface each point, measures the displacement of crack width change and the corresponding relation of fluorescence intensity.
During observation tunnel surrounding rock displacement, an excitation source is used to irradiate the surface of shotcrete layer.Contrast is at two
The Strength Changes situation of fluorescence at the concrete surface each point that different time points is observed, can measure the displacement letter of tunnel surrounding
Breath.
Owing to have employed technique scheme, present invention have the advantage that: this is mixed with the coagulation of quantum dot fiber
Soil can be not only used for tunnel surrounding and reinforces, and can observe again tunnel surrounding after concrete strengthening terminates the most quickly and easily
Displacement.
Detailed description of the invention
Below in conjunction with embodiment, the invention will be further described:
Embodiment 1
The quality proportioning of the present embodiment is as follows
Cement: 10kg,
Rubble: 20kg,
Sand: 10kg,
Accelerator: 0.4kg,
Four pin quantum dot fiber solution: 0.8kg,
Blended stir after and get final product.
The concrete for making of this proportioning is become reference block, a size of 150 × 150 × 150mm3.The standard examination that will make
Block loads on uniaxial compression instrument, simultaneously when loading, uses excitation source to irradiate and is observed gathering with spectrogrph
Fluorescence intensity, and measure crack width change.
Using the concrete standard test block that this proportioning is made during uniaxial loading, the crack width of test specimen changes and institute
The fluorescence intensity change collected is the most more apparent, shows that the working performance of concrete containing quantum dot fiber under this proportioning is good,
And the crack growth of test specimen is obvious, facilitates crack width measurement tasks.
Embodiment 2
The quality proportioning of the present embodiment is as follows
Cement: 8kg,
Rubble: 20kg,
Sand: 10kg,
Accelerator: 0.3kg,
Four pin quantum dot fiber solution: 0.5kg,
Blended stir after and get final product.
The concrete for making of this proportioning is become reference block, a size of 150 × 150 × 150mm3.The standard examination that will make
Block loads on uniaxial compression instrument, simultaneously when loading, uses excitation source to irradiate and is observed gathering with spectrogrph
Fluorescence intensity, and measure crack width change.
Using the concrete standard test block that this proportioning is made during uniaxial loading, the crack growth of test specimen is obvious, and
Crack width changes greatly, but the fluorescence intensity collected is the least, and changes inconspicuous.Test shows under this proportioning
Four pin quantum dot fiber solution content are less, cause this to contain the working performance of concrete of quantum dot fiber bad.This embodiment institute
The quality proportioning used can be as the proportioning lower limit of the gunite concrete of the configuration present invention.
Embodiment 3
The quality proportioning of the present embodiment is as follows
Cement: 15kg,
Rubble: 35kg,
Sand: 15kg,
Accelerator: 0.6kg,
Four pin quantum dot fiber solution: 1.0kg,
Blended stir after and get final product.
The concrete for making of this proportioning is become reference block, a size of 150 × 150 × 150mm3.The standard examination that will make
Block loads on uniaxial compression instrument, simultaneously when loading, uses excitation source to irradiate and is observed gathering with spectrogrph
Fluorescence intensity, and measure crack width change.
Using the concrete standard test block that this proportioning is made during uniaxial loading, the crack growth of test specimen is obvious, but
Crack width change is less, and the fluorescence intensity change collected is less.Test shows the mechanical property of the test specimen under this proportioning
Can be undesirable, cause this to contain the working performance of concrete of quantum dot fiber bad.The quality proportioning that this embodiment is used
Can be as the proportioning upper limit of the gunite concrete of the configuration present invention.
In conjunction with above three embodiment, the present invention uses cement, rubble, sand, accelerator and four pin quantum dot fiber solutions,
Its quality proportioning is as follows:
Cement: 80 ~ 150 parts,
Rubble: 200 ~ 350 parts,
Sand: 100 ~ 150 parts,
Accelerator: 3 ~ 6 parts,
Four pin quantum dot fiber solutions: 5 ~ 10 parts.
The present invention is after above composition mixing and stirring and get final product.
Claims (2)
1. can observe a gunite concrete for tunnel surrounding rock displacement, it is characterized in that: raw material mass mixture ratio is as follows:
Cement: 80 ~ 150 parts,
Rubble: 200 ~ 350 parts,
Sand: 100 ~ 150 parts,
Accelerator: 3 ~ 6 parts,
Four pin quantum dot fiber solutions: 5 ~ 10 parts.
2. a kind of gunite concrete that can observe tunnel surrounding rock displacement described in a claim 1, it is characterised in that: raw material matter
Amount join for:
Cement: 100 parts,
Rubble: 200 parts,
Sand: 100 parts,
Accelerator: 4 parts,
Four pin quantum dot fiber solutions: 8 parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610427328.0A CN106116276B (en) | 2016-06-16 | 2016-06-16 | A kind of gunite concrete that can observe tunnel surrounding rock displacement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610427328.0A CN106116276B (en) | 2016-06-16 | 2016-06-16 | A kind of gunite concrete that can observe tunnel surrounding rock displacement |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106116276A true CN106116276A (en) | 2016-11-16 |
| CN106116276B CN106116276B (en) | 2018-04-06 |
Family
ID=57469551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610427328.0A Active CN106116276B (en) | 2016-06-16 | 2016-06-16 | A kind of gunite concrete that can observe tunnel surrounding rock displacement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106116276B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244902A (en) * | 2007-06-15 | 2008-08-20 | 东华大学 | Fluorescence fibre for reinforcing concrete, production and application thereof |
| CN101265058A (en) * | 2008-04-17 | 2008-09-17 | 中铁二局股份有限公司 | Injection concrete |
| CN102515653A (en) * | 2012-01-09 | 2012-06-27 | 山西潞安环保能源开发股份有限公司 | Formula of high-intensity sprayed concrete |
| CN102515652A (en) * | 2012-01-09 | 2012-06-27 | 山西潞安环保能源开发股份有限公司 | Formula of high-tenacity sprayed concrete |
| CN103360005A (en) * | 2013-07-12 | 2013-10-23 | 解波 | Sprayed concrete |
| CN104446260A (en) * | 2014-12-02 | 2015-03-25 | 安徽恒源煤电股份有限公司 | Polypropylene fiber sprayed concrete |
-
2016
- 2016-06-16 CN CN201610427328.0A patent/CN106116276B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101244902A (en) * | 2007-06-15 | 2008-08-20 | 东华大学 | Fluorescence fibre for reinforcing concrete, production and application thereof |
| CN101265058A (en) * | 2008-04-17 | 2008-09-17 | 中铁二局股份有限公司 | Injection concrete |
| CN102515653A (en) * | 2012-01-09 | 2012-06-27 | 山西潞安环保能源开发股份有限公司 | Formula of high-intensity sprayed concrete |
| CN102515652A (en) * | 2012-01-09 | 2012-06-27 | 山西潞安环保能源开发股份有限公司 | Formula of high-tenacity sprayed concrete |
| CN103360005A (en) * | 2013-07-12 | 2013-10-23 | 解波 | Sprayed concrete |
| CN104446260A (en) * | 2014-12-02 | 2015-03-25 | 安徽恒源煤电股份有限公司 | Polypropylene fiber sprayed concrete |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106116276B (en) | 2018-04-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Xue et al. | Mechanical, flexural and microstructural properties of cement-tailings matrix composites: Effects of fiber type and dosage | |
| Xue et al. | Analysis of internal structure behavior of fiber reinforced cement-tailings matrix composites through X-ray computed tomography | |
| Erdem et al. | Self-sensing damage assessment and image-based surface crack quantification of carbon nanofibre reinforced concrete | |
| Sariosseiri et al. | Effect of cement treatment on geotechnical properties of some Washington State soils | |
| Salcher et al. | Results of pull tests of rock bolts and cable bolts in Sydney sandstone and shale | |
| Liu et al. | Study on 3D spatial distribution of steel fibers in fiber reinforced cementitious composites through micro-CT technique | |
| Graf et al. | Effects of vegetation on the angle of internal friction of a moraine | |
| Xu et al. | Coupled effect of curing temperature and age on compressive behavior, microstructure and ultrasonic properties of cemented tailings backfill | |
| Bian et al. | Damage mechanism of ultra-high performance fibre reinforced concrete at different stages of direct tensile test based on acoustic emission analysis | |
| Carmona et al. | Characterization of the properties of steel fiber reinforced concrete by means of the generalized Barcelona test | |
| Wang et al. | Experimental study on the effect of carbon nanofiber content on the durability of concrete | |
| Meng et al. | Effect of steel fiber-volume fraction and distribution on flexural behavior of Ultra-high performance fiber reinforced concrete by digital image correlation technique | |
| CN110346213A (en) | A kind of goaf tunnel Xia Chuan Assessment of Surrounding Rock Stability method | |
| CN105776968B (en) | A kind of high-strength concrete and preparation method thereof with fire resistance and explosion-proof fragility | |
| CN110218046A (en) | A kind of big density shielding concrete and preparation method thereof for capableing of pumping construction | |
| Carmona et al. | Correlation between bending test and Barcelona tests to determine FRC properties | |
| Jun et al. | Improvement and mechanism of the mechanical properties of magnesium ammonium phosphate cement with Chopped fibers | |
| Xu et al. | Experimental study on crack features of steel fiber reinforced concrete tunnel segments subjected to eccentric compression | |
| Zhang et al. | Improvement of tailings gradation on workability and strength of cemented tailings backfill | |
| CN106116276A (en) | A kind of gunite concrete that can observe tunnel surrounding rock displacement | |
| Hu et al. | Evaluation of cracking and deflection of GFRP bar reinforced recycled concrete beams with seawater and sea sand | |
| Singh | Strength and permeability characteristics of steel fibre reinforced concrete | |
| Yu et al. | Experimental study on physical properties of superfine cement grouting material | |
| Park et al. | A study on hybrid grout material for reservoir embankment reinforcement | |
| Shah | Controlling properties of concrete through nanotechnology |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |