CN104891873A - Similar material for simulating expansible tunnel surrounding rock and preparation method of similar material - Google Patents
Similar material for simulating expansible tunnel surrounding rock and preparation method of similar material Download PDFInfo
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- CN104891873A CN104891873A CN201510275315.1A CN201510275315A CN104891873A CN 104891873 A CN104891873 A CN 104891873A CN 201510275315 A CN201510275315 A CN 201510275315A CN 104891873 A CN104891873 A CN 104891873A
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- flyash
- wilkinite
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- silicone oil
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention relates to a similar material for simulating an expansible tunnel surrounding rock and a preparation method of the similar material. The similar material comprises the following components with different permeation grades: high-permeability expansive soil, medium-permeability expansive soil and low-permeability expansive soil, wherein the high-permeability expansive soil comprises 96-105 parts of coal ash, 11-17 parts of bentonite and 8-10 parts of silicon oil; the medium-permeability expansive soil comprises 95-104 parts of coal ash, 17-25 parts of bentonite and 8-11 parts of silicon oil; and the low-permeability expansive soil comprises 96-105 parts of coal ash, 25-30 parts of bentonite and 9-12 parts of silicon oil. According to the preparation method, bentonite with different permeation rates can be proportioned to carry out a model experiment, not only can the drying and wetting cycle field condition be simulated, but also the mechanical and deformation characteristics of the expansible surrounding rock can be met; and the local materials are used, so that the materials are conveniently obtained and are saved. The bentonite is a rock mainly composed of montmorillonite so as to have extremely high expansibility. Non-combusted carbon granules in the coal ash are of loosen porous structures so as to have high permeability and an expansion inhibiting effect, and furthermore, the permeability and expansion grade of the similar material can be regulated by changing the ratio.
Description
Technical field
The present invention is specifically related to a kind of analog material for simulating swell-shrink characteristic tunnel surrounding and preparation method thereof.
Technical background
At present, in Tunnel Engineering is built, engineering is often in precipitation weather condition, drying and watering cycle effect has remarkably influenced to tunnel swell-shrink characteristic country rock, country rock can cause destruction to a certain degree in sampling with transportation, also can there is corresponding change in its original mechanical property and deformation behaviour, the cost of remote sampling is simultaneously higher; Often in present stage During Geotechnical Tests use wilkinite simulation tunnel swell-shrink characteristic country rock, but due to the character in its water-swellable blocking filler gap, infiltration experiment is difficult to carry out, cannot be used for simulating tunnel swell-shrink characteristic country rock under drying and watering cycle effect.
Summary of the invention
The object of the invention is to overcome prior art deficiency, a kind of analog material for simulating swell-shrink characteristic tunnel surrounding and preparation method thereof is provided, this analog material has good permeability performance, be easy to simulate mechanics under drying and watering cycle effect of swell-shrink characteristic country rock and deformation characteristic, can gather materials on the spot simultaneously, improve resource utilization.
The technical scheme that patent of the present invention is taked is:
For simulating an analog material for swell-shrink characteristic tunnel surrounding, the component proportion of different infiltration grade is as follows:
Hypertonicity swelling soil: flyash 96-105 part, wilkinite 11-17 part, silicone oil 8-10 part;
Middle perviousness swelling soil: flyash 95-104 part, wilkinite 17-25 part, silicone oil 8-11 part;
Low-permeability swelling soil: flyash 96-105 part, wilkinite 25-30 part, silicone oil 9-12 part.
Preferably, a kind of analog material for simulating swell-shrink characteristic tunnel surrounding, the component proportion of different infiltration grade is as follows:
Hypertonicity swelling soil: 100 parts, flyash, wilkinite 11-13 part, silicone oil 8-9 part;
Middle perviousness swelling soil: 100 parts, flyash, wilkinite 17-19 part, silicone oil 8-10 part;
Low-permeability swelling soil: 100 parts, flyash, wilkinite 25-27 part, silicone oil 9-11 part.
Preferably, a kind of analog material for simulating swell-shrink characteristic tunnel surrounding, the component proportion of different infiltration grade is as follows:
Hypertonicity swelling soil: 100 parts, flyash, wilkinite 12 parts, silicone oil 9 parts;
Middle perviousness swelling soil: 100 parts, flyash, wilkinite 18 parts, silicone oil 10 parts;
Low-permeability swelling soil: 100 parts, flyash, wilkinite 25 parts, silicone oil 11 parts.
For simulating a preparation method for the analog material of swell-shrink characteristic tunnel surrounding, comprise the steps:
(1) determine to permeate grade according to practical situation;
(2) weight proportion of the corresponding raw material of infiltration hierarchical selection by determining;
(3) reinforced and stirring, makes material mixing even, obtains mixing material, wherein, and hypertonicity swelling soil: flyash 96-105 part, wilkinite 11-17 part; Middle perviousness swelling soil: flyash 95-104 part, wilkinite 17-25 part; Low-permeability swelling soil: flyash 96-105 part, wilkinite 25-30 part;
(4) in mixing material, add silicone oil, and stir, obtain described analog material;
The object adding silicone oil in mixing material is to simulate actual country rock cohesion, and silicone oil usage quantity is unsuitable excessive, when silicon oil dosage is excessive, significantly can reduces material permeability, thus cause the failure of an experiment; Silicone oil amount is too small may to causing analog material cohesion not enough, and then at simulation of excavation process country rock premature failure.
(5) by analog material compaction moulding obtained in step (4).
Preferably, in step (4), in hypertonicity swelling soil, add silicone oil 8-10 part, in middle perviousness swelling soil, add silicone oil 8-11 part, in low-permeability swelling soil, add silicone oil 9-12 part.
Preferably, described flyash crosses 0.5mm sieve.
Preferably, described wilkinite crosses 0.5mm sieve.
Preferably, the scope of the compactness of described compaction moulding is 90-95%.
The invention has the beneficial effects as follows:
1, the present invention the swelling soil of the different rate of permeation of proportioning can carry out model experiment.Common swelling soil analog material is used in model experiment, and often due to wilkinite water-swelling blocking penetrating passage, serious reduction material permeability performance, finally causes the failure of an experiment; And the good material of permeability performance does not often possess swell-shrink characteristic, cannot simulate distortion and the mechanical characteristic of swell-shrink characteristic country rock.Analog material in the present invention, have chosen the fly ash material seldom adopted in model trial, and by a large amount of infrastest, draw a series of comparatively reasonably proportioning, make analog material can simulate the field condition of drying and watering cycle, mechanics and the deformation characteristic of swell-shrink characteristic country rock can be met again, gather materials on the spot, convenient saving.
2, the rock that is mainly made up of montmorillonite of wilkinite, its swelling property is high.Flyash is produced by coal dust firing, and wherein unburn carbon granule becomes loose and porous structure, is beneficial to liquid and passes through, have hypertonicity, also has the effect of repression of swelling simultaneously, by changing the adjustable analog material penetrating quality of proportioning and inflation level.Analog material in the present invention can regulate the content of wilkinite montmorillonite by flyash, control its perviousness and swelling capacity, to meet the mechanical property of drying and watering cycle requirement of experiment and swelling soil.
3, for making analog material reach anticipation character, present invention uses the common used material of multiple different field, and making it organically combine by basic centrifugal modeling: wilkinite determines material swell-shrink characteristic, flyash improves material permeability and reacts on swell-shrink characteristic, silicone oil promotes material cohesion, can be similar application invention and provides certain reference.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described.
Tunnel excavation model experiment under simulation swelling clay rock condition, experimentally needs, chooses the many groups of analog materials with different permeability coefficient and rate of expansion for comparative study:
Embodiment 1
Concrete steps prepared by described analog material are as follows:
(1) swelling soil without obvious impurity and larger knot and flyash is selected;
(2) perviousness of the analog material required by Confirming model test, configuration different ratios can be used for contrast experiment;
(3) proportioning is carried out by weight: 100 parts, flyash and wilkinite 11 parts;
(4) material loading and stirring, makes material mixing even;
(5) in the material stirred, add silicone oil, the quality of silicone oil is 9% of flyash and wilkinite quality sum;
(6) needing to control compactness according to experiment makes model trial material compaction shaping, and in 95% compactness situation, permeability coefficient is 2.7 × 10
-5cm/s.
Embodiment 2
Concrete steps prepared by described analog material are as follows:
(1) swelling soil without obvious impurity and larger knot and flyash is selected;
(2) perviousness of the analog material required by Confirming model test, configuration different ratios can be used for contrast experiment;
(3) 100 parts, proportioning flyash and wilkinite 17 parts is carried out by weight;
(4) material loading and stirring, makes material mixing even;
(5) in the material stirred, add silicone oil, quality is 8% of flyash and wilkinite quality sum;
(6) needing to control compactness according to experiment makes model trial material compaction shaping, and when 95% compactness, permeability coefficient is respectively 1.6 × 10
-5cm/s.
Embodiment 3
Concrete steps prepared by described analog material are as follows:
(1) swelling soil without obvious impurity and larger knot and flyash is selected;
(2) perviousness of the analog material required by Confirming model test, configuration different ratios can be used for contrast experiment;
(3) 100 parts, proportioning flyash and wilkinite 25 parts is carried out by weight;
(4) material loading and stirring, makes material mixing even;
(5) in the material stirred, add silicone oil, quality is 7% of flyash and wilkinite quality sum;
(6) needing to control compactness according to experiment makes model trial material compaction shaping, and in 95% compactness situation, permeability coefficient is respectively 1.1 × 10
-5cm/s.
table 1be composition and the penetrating quality of three embodiments, under the prerequisite with swelling soil expansion character, meet related experiment to its tonicity requirements.
table 1the composition of different permeability swelling soil analog material and penetrating quality thereof
By
table 1visible, along with the raising of analog material penetrating quality, the addition of silicone oil reduces, this is because along with bentonite content increase, the cohesion of analog material can obviously promote, reduce to some extent for reaching the silicone oil amount needing intensity, bentonite content increase simultaneously can reduce analog material permeability coefficient, too much adds silicone oil and infiltration performance can be caused to meet requirement of experiment.
Although above-mentioned, the specific embodiment of the present invention is described; but the restriction not to invention protection domain; one of ordinary skill in the art should be understood that; on the basis of technical scheme of the present invention, those skilled in the art do not need to pay various amendment or distortion that creative work can make still in protection scope of the present invention.
Claims (8)
1. for simulating an analog material for swell-shrink characteristic tunnel surrounding, it is characterized in that: the component proportion of the difference infiltration grade of described analog material is as follows:
Hypertonicity swelling soil: flyash 96-105 part, wilkinite 11-17 part, silicone oil 8-10 part;
Middle perviousness swelling soil: flyash 95-104 part, wilkinite 17-25 part, silicone oil 8-11 part;
Low-permeability swelling soil: flyash 96-105 part, wilkinite 25-30 part, silicone oil 9-12 part.
2. for simulating an analog material for swell-shrink characteristic tunnel surrounding, it is characterized in that: the component proportion of the difference infiltration grade of described analog material is as follows:
Hypertonicity swelling soil: 100 parts, flyash, wilkinite 11-13 part, silicone oil 9-10 part;
Middle perviousness swelling soil: 100 parts, flyash, wilkinite 17-19 part, silicone oil 8-9 part;
Low-permeability swelling soil: 100 parts, flyash, wilkinite 25-27 part, silicone oil 9-11 part.
3. for simulating an analog material for swell-shrink characteristic tunnel surrounding, it is characterized in that: the component proportion of the difference infiltration grade of described analog material is as follows:
Hypertonicity swelling soil: 100 parts, flyash, wilkinite 12 parts, silicone oil 9 parts;
Middle perviousness swelling soil: 100 parts, flyash, wilkinite 18 parts, silicone oil 10 parts;
Low-permeability: 100 parts, flyash, wilkinite 25 parts, silicone oil 11 parts.
4., for simulating a preparation method for the analog material of swell-shrink characteristic tunnel surrounding, comprise the steps:
(1) determine to permeate grade according to practical situation;
(2) weight proportion of the corresponding raw material of infiltration hierarchical selection by determining;
(3) reinforced and stirring, makes material mixing even, obtains mixing material, wherein, and hypertonicity swelling soil: flyash 96-105 part, wilkinite 11-17 part; Middle perviousness swelling soil: flyash 95-104 part, wilkinite 17-25 part; Low-permeability swelling soil: flyash 96-105 part, wilkinite 25-30 part;
(4) in mixing material, add silicone oil, and stir, obtain described analog material;
(5) by analog material compaction moulding obtained in step (4).
5. preparation method according to claim 4, is characterized in that: in step (4), adds silicone oil 8-10 part in hypertonicity swelling soil, adds silicone oil 8-11 part in middle perviousness swelling soil, adds silicone oil 9-12 part in low-permeability swelling soil.
6. preparation method according to claim 5, is characterized in that: described flyash crosses 0.5mm sieve.
7. preparation method according to claim 5, is characterized in that: described wilkinite crosses 0.5mm sieve.
8. preparation method according to claim 4, is characterized in that: in step (5), and the scope of the compactness of described compaction moulding is 90-95%.
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| CN201510275315.1A CN104891873B (en) | 2015-05-26 | 2015-05-26 | A kind of analog material for simulating swell-shrink characteristic tunnel surrounding and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242010A (en) * | 2015-09-28 | 2016-01-13 | 山东大学 | Device and method for testing swelling-shrinkage soil tunnel model under effect of dry-wet circles |
| CN108002803A (en) * | 2017-11-20 | 2018-05-08 | 山东大学 | It is a kind of to be used to simulate Muddy Bottoms clay analog material of deep foundation pit construction mechanism and preparation method thereof |
| CN109437672A (en) * | 2018-11-26 | 2019-03-08 | 西南科技大学 | A kind of Rock soil similar material and preparation method thereof that intensive parameter is controllable |
| CN110642583A (en) * | 2019-10-23 | 2020-01-03 | 山东大学 | Coral sand-crumbs limestone and coral conglomerate-crumbs limestone similar material, and preparation method and application thereof |
| CN112051389A (en) * | 2020-07-21 | 2020-12-08 | 中煤科工集团重庆研究院有限公司 | Preparation material for remolding coal series mud rock sample and batch preparation method thereof |
| CN114034839A (en) * | 2021-11-03 | 2022-02-11 | 广东中煤江南工程勘测设计有限公司 | Soil bonding curing agent and soil detection method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103242029A (en) * | 2013-05-07 | 2013-08-14 | 山东大学 | Similar material for simulating expansive soil tunnel surrounding rock in model test and preparation method thereof |
| CN103755209A (en) * | 2013-12-26 | 2014-04-30 | 中国矿业大学 | Hydrophobic similar material for mined rock mass crack research |
| CN103936330A (en) * | 2014-04-12 | 2014-07-23 | 北京工业大学 | Geomechanical model similar material for simulating V-class surrounding rock |
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2015
- 2015-05-26 CN CN201510275315.1A patent/CN104891873B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103242029A (en) * | 2013-05-07 | 2013-08-14 | 山东大学 | Similar material for simulating expansive soil tunnel surrounding rock in model test and preparation method thereof |
| CN103755209A (en) * | 2013-12-26 | 2014-04-30 | 中国矿业大学 | Hydrophobic similar material for mined rock mass crack research |
| CN103936330A (en) * | 2014-04-12 | 2014-07-23 | 北京工业大学 | Geomechanical model similar material for simulating V-class surrounding rock |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242010A (en) * | 2015-09-28 | 2016-01-13 | 山东大学 | Device and method for testing swelling-shrinkage soil tunnel model under effect of dry-wet circles |
| CN108002803A (en) * | 2017-11-20 | 2018-05-08 | 山东大学 | It is a kind of to be used to simulate Muddy Bottoms clay analog material of deep foundation pit construction mechanism and preparation method thereof |
| CN108002803B (en) * | 2017-11-20 | 2019-07-02 | 山东大学 | A kind of Muddy Bottoms clay analog material and preparation method thereof for simulating deep foundation pit construction mechanism |
| CN109437672A (en) * | 2018-11-26 | 2019-03-08 | 西南科技大学 | A kind of Rock soil similar material and preparation method thereof that intensive parameter is controllable |
| CN110642583A (en) * | 2019-10-23 | 2020-01-03 | 山东大学 | Coral sand-crumbs limestone and coral conglomerate-crumbs limestone similar material, and preparation method and application thereof |
| CN110642583B (en) * | 2019-10-23 | 2020-11-03 | 山东大学 | Coral sand-crumbs limestone and coral conglomerate-crumbs limestone similar material, and preparation method and application thereof |
| CN112051389A (en) * | 2020-07-21 | 2020-12-08 | 中煤科工集团重庆研究院有限公司 | Preparation material for remolding coal series mud rock sample and batch preparation method thereof |
| CN114034839A (en) * | 2021-11-03 | 2022-02-11 | 广东中煤江南工程勘测设计有限公司 | Soil bonding curing agent and soil detection method |
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| CN104891873B (en) | 2017-01-04 |
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