CN107907421A - The lower country rock response test system of Thermal-mechanical Coupling effect - Google Patents
The lower country rock response test system of Thermal-mechanical Coupling effect Download PDFInfo
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- CN107907421A CN107907421A CN201711055496.2A CN201711055496A CN107907421A CN 107907421 A CN107907421 A CN 107907421A CN 201711055496 A CN201711055496 A CN 201711055496A CN 107907421 A CN107907421 A CN 107907421A
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- country rock
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- 239000011435 rock Substances 0.000 title claims abstract description 60
- 230000004044 response Effects 0.000 title claims abstract description 26
- 238000012360 testing method Methods 0.000 title claims abstract description 20
- 230000001808 coupling effect Effects 0.000 title abstract description 3
- 230000008878 coupling Effects 0.000 claims abstract description 23
- 238000010168 coupling process Methods 0.000 claims abstract description 23
- 238000005859 coupling reaction Methods 0.000 claims abstract description 23
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 230000006835 compression Effects 0.000 claims abstract description 10
- 238000007906 compression Methods 0.000 claims abstract description 10
- 238000009412 basement excavation Methods 0.000 claims abstract description 4
- 230000000694 effects Effects 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 11
- 239000010959 steel Substances 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000011231 conductive filler Substances 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 9
- 238000011160 research Methods 0.000 abstract description 6
- 238000013461 design Methods 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 abstract description 2
- 238000009533 lab test Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 206010011224 Cough Diseases 0.000 description 1
- 206010047700 Vomiting Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002285 radioactive effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
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- 230000000087 stabilizing effect Effects 0.000 description 1
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- 230000008673 vomiting Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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- 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
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
Abstract
The present invention provides a kind of Thermal-mechanical Coupling to act on lower country rock response test system, including compression system, heating system, monitoring system.The present invention can directly acquire different temperatures, the mechanical response of the lower country rock of different stress coupling effects, realize the quantitative recognition for causing country rock failure evolvement to Stress relief, temperature change.The present invention acts on Thermal-mechanical Coupling lower country rock basic physical and mechanical parameters measure, deformation behaviour, rock convergence measure failure mechanism research etc. research, with important use value, or Underground Engineering Excavation, design of its support and Stability Analysis of The Surrounding Rock provide important evidence.
Description
Technical field
The present invention relates to country rock response test system under coupling thermal and mechanical effect, can be used to meet with High-geotemperature and highland at the same time
The deep underground engineerings such as the hydroelectric project of stress, mining, energy development, the underground space.
Background technology
Some privileged sites in underground, the intersection part or the area of geothermal anomaly of such as fracture belt, have been often possible to hot spring
Produce or geothermal anomaly, the high person of temperature produce High-geotemperature up to tens degrees Celsius when ground temperature is more than 30 DEG C.Temperature is as influence
An important factor for mechanical properties such as rock strength, deformation, coffer mechanics response caused by temperature change can not be ignored.
Buried hydraulic and hydroelectric engineering construction, the exploitation of deep mineral resources, the exploitation of the underground gasification of coal, geothermal energy resources
And the geological environment residing for the engineering such as storage of high radioactive nucleus waste --- it is possible to experience high temperature, such as the south water to north
Western line water diversion engineering tunnel maximum buried depth reaches 1100m, and maximum principal stress reaches 50MPa, and adjoining rock stability reaches as high as 70 DEG C；Xinjiang noise made in coughing or vomiting
Assorted up to 90 DEG C of Boulogne mouth public affairs Ge Er power stations diversion tunnel temperature.Under the effect of this high temperature and pressure, the mechanics of rock is special
Property obvious deterioration will occur, and then reduce the overall security of engineering, show the mechanical characteristic completely different with superficial part.Mesh
Before, oneself is tunnel engineering, mining engineering and the common geological hazards of other underground engineerings to high temperature problem, is become more than restriction
The technical bottleneck of every engineering construction.
In terms of coupling thermal and mechanical effect research, current research is concentrated mainly on rock indoor experiment and laboratory test knot
Two major class of numerical computations is closed, the relation between the mechanical characteristic and temperature of the main study of rocks of laboratory test of wherein rock, takes off
Show the rule that each mechanics parameter of rock varies with temperature；The method of laboratory test combination numerical simulation is then on the basis of experiment
On, using the stress field of the surrounding rock under numerical method analysis temperature action, displacement field, temperature field changing rule.
Above two method is primarily directed to small scale rock, and numerical computations are also to carry out on this basis, but small ruler
It is significantly different to spend Fracture Networks, stress condition and scene included in rock, the temperature transfer mode used in laboratory test
It is not inconsistent actually with scene, the mechanical response of rock at different temperatures is more to embody material composition itself to become temperature yet
The response of change, and at the scene in practice, what temperature change influenced first should be the extension in crack, it is therefore desirable to provide a kind of existing
Country rock response test system under the available coupling thermal and mechanical effect in field.
The content of the invention
The technical problems to be solved by the invention are to provide country rock response test system under a kind of coupling thermal and mechanical effect.For
This, the present invention uses following technical scheme；
Country rock response test system under coupling thermal and mechanical effect, it is characterised in that it includes compression system, heating system, monitoring system
System：
The compression system is included in country rock using the circular tunnel in mechanical excavation hole footpath as pressurization hole, in pressurization hole Dong Bi
Total length arranges rubber pneumatic bag, and arranges force transferring structure between rubber pneumatic bag and hole wall, and rubber pneumatic bag and country rock are contacted one
Rise, in rubber pneumatic bag and country rock contact position arrangement pressure sensor；The compression system further includes the aerating device of rubber pneumatic bag,
The rubber pneumatic bag is provided with inflation/deflation connector；
The heating system is included in the multiple bottoming holes being evenly arranged around pressurization hole；Electric electrical heating member is arranged in bottoming hole
Part, in electrical heating elements and bottoming hole intermediate arrangement sealed steel pipe；
The monitoring system is included in the monitoring holes of pressurization hole and bottoming hole intermediate arrangement, placement sensor in monitoring holes.
Further, hole footpath 1m ~ 1.5m, the 6 ~ 10m of length of the circular tunnel.
Further, arrange one layer of rubber covering layer as rubber pneumatic bag in circular tunnel hole wall total length.
Further, it is described to be evenly arranged 4 ~ 8 bottoming holes, the multiple rounded cloth of bottoming hole on pressurization hole periphery
Put, the spacing between bottoming hole and pressurization hole is 1 times of pressurization Dong Dong footpath, and length is consistent with pressurization hole.
Further, the force transferring structure uses steel arch-shelf.
Further, filled between heating hole wall and sealed steel pipe with conductive filler material.
Country rock response test system under coupling thermal and mechanical effect provided by the invention, can directly acquire different temperatures, difference
The mechanical response of the lower country rock of stress coupling effect, realizing causes quantifying for country rock failure evolvement to be recognized Stress relief, temperature change
Know.The present invention is to country rock basic physical and mechanical parameters measure, deformation behaviour, rock convergence measure failure mechanism under coupling thermal and mechanical effect
Research etc. research, has important use value, or Underground Engineering Excavation, design of its support and surrounding rock stability
Analysis provides important evidence.
Brief description of the drawings
Fig. 1 is the floor plan of country rock response test system under coupling thermal and mechanical effect of the present invention.
Fig. 2 is the axial schematic cross-sectional view of Fig. 1.
Fig. 3 is the floor plan that country rock response test system is pressurizeed in hole under coupling thermal and mechanical effect of the present invention.
Fig. 4 is the axial arrangement figure that country rock response test system is pressurizeed in hole under coupling thermal and mechanical effect of the present invention.
Fig. 5 is the floor plan in country rock response test system bottoming hole under coupling thermal and mechanical effect of the present invention.
Fig. 6 is the axial arrangement figure in country rock response test system bottoming hole under coupling thermal and mechanical effect of the present invention.
Embodiment
Referring to the drawings, inventing country rock response test system under provided coupling thermal and mechanical effect includes：
（1）Compression system, realizes and the artificial of force-bearing of surrounding rock mass state is changed.The compression system is included in country rock using machinery
Hole footpath 1m ~ 1.5m, the circular tunnel of 6 ~ 10m of length are excavated, is used as pressurization hole 1.
Hole 1 of pressurizeing selects suitable area to set in underground engineering at the scene, avoids grow up cranny structure and underground water, downwards
Pressurization hole is excavated, is excavated using mechanical, avoids that peripheral rock is caused to damage.
One layer of rubber covering layer is arranged in pressurization hole hole wall total length, plays the role of rubber pneumatic bag 2, and in rubber pneumatic bag
Steel arch-shelf 3 is arranged in side, and steel arch-shelf 3 is used as force transferring structure, rubber pneumatic bag 2 is linked together with country rock using steel arch-shelf 3, stress
Peripheral rock can effectively be passed to, it is ensured that the pressure that internal gas produces can be effectively passed to peripheral rock.Drawing reference numeral
10 be pressurization hole wall.
In order to realize the change of pressure in hole, the rubber pneumatic bag 2 for can inflation/deflation air bag, there is inflation/deflation connector.
Nitrogen is filled into rubber pneumatic bag 2 using pressure vessel 21, and range of pressure values will be protected in fueling process in 0.5MPa ~ 5MPa
Relatively low speed is held, air bag was full of within 1 ~ 2 day time, prevents air bag unbalance stress from destroying.
In rubber pneumatic bag and country rock contact position arrangement pressure sensor, pressure sensor 1 ~ 1.5m of spacing, ensures that pressure is real
When monitor, and in temperature-rise period, since gas expands with heat and contract with cold, the pressure of country rock is had an impact, it is also desirable to pass through pressure
Monitoring is adjusted in real time, ensures the stabilization of pressure.
（2）Heating system
Add heat control system mainly by arranging bottoming hole 5 on compression system periphery, the arrangement stainless steel heating rod in bottoming hole 5
6 come what is realized, and heating rod 6 is connected with external power supply 60, to generate heat, raises the temperature in country rock.
4 ~ 8 bottoming holes 5 are evenly arranged on pressurization 1 periphery of hole, these bottoming holes 5 are arranged in a circular formation, and bottoming hole 5 is still adopted
Excavated with mechanical, 5 spacing of bottoming hole is about 100mm, and the spacing between pressurization hole 1 is 1 times of pressurization 1 hole footpath of hole, length
It is identical with pressurization hole 1.
The stainless steel heating rod 6 of arrangement in bottoming hole 5, diameter is about 50mm, it is heated using high-tension current,
Heating rod 6 and bottoming hole intermediate arrangement sealed steel pipe 7, prevent that heating rod 6 from being influenced by underground water, accident occur.In sealing steel 7
Fine sand 8 is filled between pipe and bottoming hole 5, ensures that temperature can be evenly transferred to peripheral rock.Drawing reference numeral 60 is high-tension current
Power supply.
When heating rod 6 is begun to warm up, gas pressure in pressurization hole 1 will be caused to change, in order to ensure the steady of pressure
It is fixed, according to the pressure for being arranged in pressurization hole pressure sensor 4 and adjust in real time rubber pneumatic bag 2, guarantee voltage stabilizing.
（3）Monitoring system, monitoring system is primarily to country rock responds between monitoring pressure hole 1 and bottoming hole 5.
In pressurization hole 1 and 5 intermediate arrangement monitoring holes 9 of bottoming hole, monitoring holes 9 arrangement thermometer, sound emission, stress meter,
The sensors such as multipoint displacement meter, monitor rupture, stress and deformation of the country rock under different temperatures, different force coupling respectively
Etc. response characteristic, the quantitative recognition for causing country rock failure evolvement to Stress relief, temperature change is realized.
Architectural feature the foregoing is merely the specific embodiment of the present invention, but the present invention is not limited thereto, Ren Heben
The technical staff in field in the field of the invention, all cover among protection scope of the present invention by the change or modification made.
Claims (6)
1. country rock response test system under coupling thermal and mechanical effect, it is characterised in that it includes compression system, heating system, monitoring
System：
The compression system is included in country rock using the circular tunnel in mechanical excavation hole footpath as pressurization hole, in pressurization hole Dong Bi
Total length arranges rubber pneumatic bag, and arranges force transferring structure between rubber pneumatic bag and hole wall, and rubber pneumatic bag and country rock are contacted one
Rise, in rubber pneumatic bag and country rock contact position arrangement pressure sensor；The compression system further includes the aerating device of rubber pneumatic bag,
The rubber pneumatic bag is provided with inflation/deflation connector；
The heating system is included in the multiple bottoming holes being evenly arranged around pressurization hole；Electric electrical heating member is arranged in bottoming hole
Part, in electrical heating elements and bottoming hole intermediate arrangement sealed steel pipe；
The monitoring system is included in the monitoring holes of pressurization hole and bottoming hole intermediate arrangement, placement sensor in monitoring holes.
2. country rock response test system under coupling thermal and mechanical effect as claimed in claim 1, it is characterised in that the circular tunnel
Hole footpath 1m ~ 1.5m, 6 ~ 10m of length.
3. country rock response test system under coupling thermal and mechanical effect as claimed in claim 1, it is characterised in that in circular tunnel hole
Wall total length arranges one layer of rubber covering layer as rubber pneumatic bag.
4. country rock response test system under coupling thermal and mechanical effect as claimed in claim 1, it is characterised in that described in pressurization hole
Periphery is evenly arranged 4 ~ 8 bottoming holes, and the multiple bottoming hole is arranged in a circular formation, and the spacing between bottoming hole and pressurization hole is 1
Pressurization Dong Dong footpaths again, length are consistent with pressurization hole.
5. country rock response test system under coupling thermal and mechanical effect as claimed in claim 1, it is characterised in that the force transferring structure
Using steel arch-shelf.
6. country rock response test system under coupling thermal and mechanical effect as claimed in claim 1, it is characterised in that heating hole wall with
Filled between sealed steel pipe with conductive filler material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055496.2A CN107907421A (en) | 2017-11-01 | 2017-11-01 | The lower country rock response test system of Thermal-mechanical Coupling effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711055496.2A CN107907421A (en) | 2017-11-01 | 2017-11-01 | The lower country rock response test system of Thermal-mechanical Coupling effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107907421A true CN107907421A (en) | 2018-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711055496.2A Pending CN107907421A (en) | 2017-11-01 | 2017-11-01 | The lower country rock response test system of Thermal-mechanical Coupling effect |
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| CN (1) | CN107907421A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09273143A (en) * | 1996-04-05 | 1997-10-21 | Kyushu Electric Power Co Inc | Base rock excavation method |
| US20110166843A1 (en) * | 2007-08-24 | 2011-07-07 | Sheng-Yuan Hsu | Method For Modeling Deformation In Subsurface Strata |
| CN102539652A (en) * | 2012-01-05 | 2012-07-04 | 浙江中科依泰斯卡岩石工程研发有限公司 | Method for monitoring response systematicness of excavation of adjacent rock of deep buried tunnel |
| CN102809574A (en) * | 2012-07-18 | 2012-12-05 | 山东科技大学 | Device for testing coupling function of multi-physics field of core rock and use method of device |
| CN103063335A (en) * | 2013-01-11 | 2013-04-24 | 福建岩土工程勘察研究院 | Three-dimensional geological survey testing method of deep portion crustal stress based on loading monitoring data |
| CN103424533A (en) * | 2013-07-23 | 2013-12-04 | 北京交通大学 | Fractured rock heat-water-force three-field coupling large-scale model test method |
| CN105675483A (en) * | 2016-01-18 | 2016-06-15 | 太原理工大学 | Test device and method for deformation of drill holes in condition with high temperature and high pressure |
| CN106546292A (en) * | 2016-11-07 | 2017-03-29 | 黑龙江科技大学 | Coal underground mining coal and rock multi- scenarios method test device and method |
| CN207540896U (en) * | 2017-11-01 | 2018-06-26 | 中国电建集团华东勘测设计研究院有限公司 | Country rock response test system under coupling thermal and mechanical effect |
-
2017
- 2017-11-01 CN CN201711055496.2A patent/CN107907421A/en active Pending
Patent Citations (9)
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|---|---|---|---|---|
| JPH09273143A (en) * | 1996-04-05 | 1997-10-21 | Kyushu Electric Power Co Inc | Base rock excavation method |
| US20110166843A1 (en) * | 2007-08-24 | 2011-07-07 | Sheng-Yuan Hsu | Method For Modeling Deformation In Subsurface Strata |
| CN102539652A (en) * | 2012-01-05 | 2012-07-04 | 浙江中科依泰斯卡岩石工程研发有限公司 | Method for monitoring response systematicness of excavation of adjacent rock of deep buried tunnel |
| CN102809574A (en) * | 2012-07-18 | 2012-12-05 | 山东科技大学 | Device for testing coupling function of multi-physics field of core rock and use method of device |
| CN103063335A (en) * | 2013-01-11 | 2013-04-24 | 福建岩土工程勘察研究院 | Three-dimensional geological survey testing method of deep portion crustal stress based on loading monitoring data |
| CN103424533A (en) * | 2013-07-23 | 2013-12-04 | 北京交通大学 | Fractured rock heat-water-force three-field coupling large-scale model test method |
| CN105675483A (en) * | 2016-01-18 | 2016-06-15 | 太原理工大学 | Test device and method for deformation of drill holes in condition with high temperature and high pressure |
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| Title |
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