CN107677527A - A kind of rock triaxial test destroys test micro reinforcement means - Google Patents
A kind of rock triaxial test destroys test micro reinforcement means Download PDFInfo
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- CN107677527A CN107677527A CN201710815084.8A CN201710815084A CN107677527A CN 107677527 A CN107677527 A CN 107677527A CN 201710815084 A CN201710815084 A CN 201710815084A CN 107677527 A CN107677527 A CN 107677527A
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- rock
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- microorganism
- rock sample
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- 239000011435 rock Substances 0.000 title claims abstract description 64
- 238000012360 testing method Methods 0.000 title claims abstract description 25
- 230000002787 reinforcement Effects 0.000 title claims abstract description 9
- 244000005700 microbiome Species 0.000 claims abstract description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000002474 experimental method Methods 0.000 claims abstract description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- 230000000694 effects Effects 0.000 claims abstract description 7
- 239000006004 Quartz sand Substances 0.000 claims abstract description 6
- 235000015097 nutrients Nutrition 0.000 claims abstract description 6
- 230000006378 damage Effects 0.000 claims abstract description 5
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims abstract description 3
- 238000007596 consolidation process Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 238000010998 test method Methods 0.000 claims description 3
- 230000000052 comparative effect Effects 0.000 claims description 2
- 229920001296 polysiloxane Polymers 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims 1
- 238000012669 compression test Methods 0.000 claims 1
- 230000008676 import Effects 0.000 claims 1
- 238000012856 packing Methods 0.000 claims 1
- 239000000843 powder Substances 0.000 claims 1
- 238000005086 pumping Methods 0.000 claims 1
- 238000001179 sorption measurement Methods 0.000 claims 1
- 239000004575 stone Substances 0.000 claims 1
- 239000011521 glass Substances 0.000 abstract description 7
- 239000004568 cement Substances 0.000 abstract description 6
- 238000011160 research Methods 0.000 abstract description 2
- 210000003128 head Anatomy 0.000 description 8
- 239000000243 solution Substances 0.000 description 8
- 239000011259 mixed solution Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 102000005701 Calcium-Binding Proteins Human genes 0.000 description 1
- 108010045403 Calcium-Binding Proteins Proteins 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 210000000744 eyelid Anatomy 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of rock triaxial test to destroy sample microorganism reinforcement means, belongs to the sample preparation of rock mechanics laboratory Rock strength testing and apparatus field.Comprise the following steps：Rock triaxial test destruction rock sample is packed together with after quartz sand filled opening with rubber band；Sealed and be fixed up in fracture side with glass cement；Customization automatic overflow determines water head equipment；The container of both ends open is installed in the upper and lower end of sample, and sealed at interface position；Microorganism and nutrient solution are injected up to upper end container does not have liquid outflow from lower end container；The container of upper and lower ends is removed, and the glass cement on fracture is cut off, the rock sample formed after a reinforcing.Twice laid is fully realized in the invention, and after the completion of microorganism reinforcement experiment, can directly carry out three axle rock mechanics experiments, research can be analyzed with not prerupture rock mechanics, rationally assesses the effect that microorganism reinforces fragmented rock body.
Description
Technical field
The present invention is a kind of method that microorganism reinforces fragmented rock body, belongs to rock mechanics laboratory Rock strength testing system
Sample and apparatus field.
Background technology
Consolidation process is carried out to fragmented rock body using microorganism, is a kind of reinforcement technique of innovation.The main original of the technology
Reason is, by injecting the mixed solution of appropriate microorganism and nutrient solution into rock cranny, using certain micro-organisms to urea
Catalytic action hydrolysis generation carbanion, and with calcium binding produce mineral deposit, gradually solidify and be bonded rock mass
Crack, so as to reach bonding and increase the purpose of rock mass body intensity.Lack suitable method at present to evaluate consolidation effect,
The present invention destroys sample using rock triaxial tests, after being reinforced by above-mentioned principle, re-starts the examination of the axle of rock mechanics three
Test, and the characteristic and parameter of obtained rock mechanics and parameter and former state are subjected to contrastive analysis, evaluate microorganism
Consolidation effect.
The content of the invention
The present invention is directed to the sample preparation problem in rock mechanics experiment field, and reinforcing fragmented rock body for microorganism provides experiment examination
Sample, and comparative study can be carried out to rock mechanics of the same sample as former state and after reinforcing and intensity, assess microorganism and add
Gu the consolidation effect of fragmented rock body.
The present invention adopts the following technical scheme that：
1., will be broken after the completion of the rock sample after crushing carries out Fracture scan and photograph after the completion of rock triaxial test operation
Residue on broken residue and fracture collects after cleaning, and weighs rock sample weight and residue weight after crushing respectively, will be broken
Sample is packed together with rubber band.
2. fine quartz sand to be paved with to the fracture of broken rear rock sample, mutually extruded after rock sample pairing, recover broken to greatest extent
Size before bad, is sealed and is fixed up in fracture side with glass cement.
3. customization automatic overflow determines water head equipment.
4. customizing the container of both ends open in the upper and lower end of sample, and sealed at side face port position, penetrate rock
The solution of sample can be drained by conduit.
5. after the completion of reinforcement experiment, removing the container of upper and lower ends, and the glass cement on fracture is cut off, form one newly
Complete rock sample, three-axis tester can be reentered into and tested.
The invention has the advantages that：
1. directly utilizing the destruction rock sample of rock triaxial test, broken sample is manually deliberately made without expending energy, fully
Realize twice laid, and after the completion of microorganism reinforcement experiment, can directly carry out three axle rock mechanics experiments, can with do not destroy before
Rock mechanics research is analyzed, rationally assess consolidation effect.
2. filled between crack with fine sand so that the sample after reparation is more closely knit.
3. automatic overflow, which determines water head equipment liquid level, head height to be adjusted according to solution infiltration situation.
4. microbial solution injection port is located at sample bottom, the air in crack can be fully discharged, accelerates fissure-plane microlith
Sand saturation simultaneously makes microorganism and nutriment more uniformly spreading in flaw sites.
5. test method is simple and efficient, cost is cheap.
Brief description of the drawings：
Fig. 1 is key rock triaxial test sample.
Fig. 2 is the sample after destroying.
Fig. 3 be that fine quartz sand is particles filled and peripheral sealing after sample.
Fig. 4 is that rock triaxial tests destroy test micro reinforcement means schematic diagram.
In Fig. 4：1, microorganism and nutrient solution mixed solution delivery pipe；2, automatic overflow determines water head equipment；3, automatic overflow
Determine water head equipment row's conduit；4, microorganism and nutrient solution mixed solution；5, automatic overflow determines water head equipment delivery port；6, it can adjust
Height stand device；7, silicone tube；8, bottom container water inlet；9, bottom container；10, lower seal band；11, periphery fissure sealing
Band；12, sample；13, top seal band；14, upper container；15, upper container row's conduit；16, upper container pressure-measuring pipe；17,
Bottom container pressure-measuring pipe.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate
The present invention rather than limitation the scope of the present invention, after the present invention has been read, those skilled in the art are each to the present invention's
The modification of the kind equivalent form of value falls within the application appended claims limited range.
1. the destruction sample after rock triaxial test is cleaned into section residue, and failure test and residue weight are weighed respectively
And make a record.
2. fine quartz sand to be paved with to two sections for destroying sample, then close up, mutually extruding to recovery standard cylinder
Size.
3. cylindrical sides fracture is reinforced and sealed with glass cement, now sample weight is weighed.
4. determining water head equipment, rock sample upper container and bottom container according to Fig. 4 customization automatic overflows, and carried out by schematic diagram
Installation.
5. top and the bottom interface is sealed respectively.
6. opening automatic overflow determines water head equipment outlet valve, microorganism and nutrient solution mixed solution are injected to rock sample,
Situation regulation eyelid retractor height is permeated according to solution.
7. treating that upper container delivery port current are gradually reduced (or even cutout), show that the section reparation of rock sample crack finishes, try
Test termination.
8. after off-test, top and the bottom container is removed respectively, and the glass on glass cement and cylinder is sealed into top and the bottom
Glue is cut off.Weight is weighed after samples dried.
9. the sample after microorganism reinforcing, which can be placed on rock three-axis force test instrument, carries out three axle rock mechanics experiments.
Claims (9)
1. a kind of rock triaxial test destroys test micro reinforcement means, it is characterised in that：Rock triaxial test crushes rock sample
Utilization, rock sample crack is filled with fine quartz sand, automatic overflow determines water head equipment, rock sample both ends experimental rig, test method etc..
2. rock triaxial test crushes the utilization of rock sample according to claim 1, it is characterised in that：Make full use of the axle of rock three
Destruction sample after experiment, the natural fissure that lower rock is acted on using pressure carry out microorganism reinforcing.
3. rock sample crack is filled with fine quartz sand according to claim 1, it is characterised in that：Dense packing effect rock mass as far as possible splits
Gap, avoid leaving cavity and produce stress concentration under pressure.
4. automatic overflow determines water head equipment according to claim 1, it is characterised in that：Situation regulation can be permeated according to rock sample to hold
Device supports, and adjusts constant level.
5. rock sample both ends experimental rig according to claim 1, it is characterised in that：Reinforce rock sample microorganism and nutrient solution mixing
Liquid import is located at its bottom, is connected by silicone tube.
6. test method according to claim 1, it is characterised in that：Rock sample after being reinforced by this method can directly carry out rock
Stone triaxial test, and can by with prerupture rock mechanics experiment Comparative result, microorganisms consolidation effect.
7. it is also patent claims for constant flow rate pumping solution containment to be connected with bottom container water inlet.
8. rock sample crack uses the ceramic powder stronger to microorganism adsorption ability to fill also for patent claims.
9. the diametral compression test of rock Brazil or the destruction rock sample of other experiments is used to be tested also as patent claims.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710815084.8A CN107677527B (en) | 2017-08-29 | Method for analyzing microbial reinforcement effect through rock triaxial test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710815084.8A CN107677527B (en) | 2017-08-29 | Method for analyzing microbial reinforcement effect through rock triaxial test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107677527A true CN107677527A (en) | 2018-02-09 |
| CN107677527B CN107677527B (en) | 2024-07-12 |
Family
ID=
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109270211A (en) * | 2018-11-09 | 2019-01-25 | 中南大学 | A kind of crack rock microorganism slip casting novel test device and test method |
| CN109459364A (en) * | 2018-10-30 | 2019-03-12 | 河海大学 | A kind of experimental rig and method for reinforcing calcareous coarse-grained soil based on MICP |
| CN113216979A (en) * | 2021-05-10 | 2021-08-06 | 华能澜沧江水电股份有限公司 | Microbial reinforcement method for fractured rock mass |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160017208A1 (en) * | 2013-03-15 | 2016-01-21 | The Regents Of The University Of California | Microbial concretion as a method for controlling wormhole events during oil recovery from unconsolidated matrices |
| CN105424438A (en) * | 2015-12-04 | 2016-03-23 | 浙江科技学院 | Penetration type microorganism uniformly-cured sandy soil sample preparation device and sample preparation method thereof |
| CN106290100A (en) * | 2015-05-20 | 2017-01-04 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of soil body biology consolidates non-disturbance permeability and intensity detection assay device |
| CN106644625A (en) * | 2016-10-09 | 2017-05-10 | 重庆大学 | Three-axis test sample preparation device of low-strength microorganism calcareous sand and application method thereof |
| CN107064472A (en) * | 2017-03-29 | 2017-08-18 | 河海大学 | The experimental rig and test method of a kind of microorganism grouting and reinforcing cylinder sand sample |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160017208A1 (en) * | 2013-03-15 | 2016-01-21 | The Regents Of The University Of California | Microbial concretion as a method for controlling wormhole events during oil recovery from unconsolidated matrices |
| CN106290100A (en) * | 2015-05-20 | 2017-01-04 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of soil body biology consolidates non-disturbance permeability and intensity detection assay device |
| CN105424438A (en) * | 2015-12-04 | 2016-03-23 | 浙江科技学院 | Penetration type microorganism uniformly-cured sandy soil sample preparation device and sample preparation method thereof |
| CN106644625A (en) * | 2016-10-09 | 2017-05-10 | 重庆大学 | Three-axis test sample preparation device of low-strength microorganism calcareous sand and application method thereof |
| CN107064472A (en) * | 2017-03-29 | 2017-08-18 | 河海大学 | The experimental rig and test method of a kind of microorganism grouting and reinforcing cylinder sand sample |
Non-Patent Citations (3)
| Title |
|---|
| GRAINNE EL MOUNTASSIR等: ""Hydrodynamic coupling in microbially mediated fracture mineralization: Formation of self-organized groundwater flow channels"", 《WATER RESOURCES RESEARCH》, vol. 50, 6 January 2014 (2014-01-06), pages 1 - 16 * |
| JAMES M.MINTO等: ""Rock fracture grouting with microbially induced carbonate precipitation"", 《WATER RESOURCES RESEARCH》, vol. 52, no. 11, 18 November 2016 (2016-11-18), pages 8827 - 8844 * |
| PHILLIPS等: ""Potential CO2 leakage reduction through biofilm-induced calcium carbonate precipitation"", 《ENVIRONMENTAL SCIENCE & TECHNOLOGY》, vol. 47, no. 1, 31 January 2013 (2013-01-31), pages 142 - 149, XP055480858, DOI: 10.1021/es301294q * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459364A (en) * | 2018-10-30 | 2019-03-12 | 河海大学 | A kind of experimental rig and method for reinforcing calcareous coarse-grained soil based on MICP |
| CN109270211A (en) * | 2018-11-09 | 2019-01-25 | 中南大学 | A kind of crack rock microorganism slip casting novel test device and test method |
| CN113216979A (en) * | 2021-05-10 | 2021-08-06 | 华能澜沧江水电股份有限公司 | Microbial reinforcement method for fractured rock mass |
| CN113216979B (en) * | 2021-05-10 | 2024-03-08 | 华能澜沧江水电股份有限公司 | Microbial reinforcement method for fractured rock mass |
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