CN104849194A - Triaxial seepage stress temperature creep coupling experimental device based on digital image - Google Patents
Triaxial seepage stress temperature creep coupling experimental device based on digital image Download PDFInfo
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Abstract
The invention discloses a triaxial seepage stress temperature creep coupling experimental device based on a digital image. The triaxial seepage stress temperature creep coupling experimental device comprises a triaxial pressure chamber (1), a digital image observing system and a triaxial pressure chamber heating system, wherein a pore pressure applying system, a stable-pressure axial applying system and a surrounding pressure applying system are mounted on the triaxial pressure chamber (1); the pore pressure applying system comprises a pore pressure fluid injection tube (5), one end of the pore pressure fluid injection tube is connected with a first pressure pump (8); the first pressure pump (8) is used for providing pore pressure energy, the pressure value is measured by a digital pressure meter (9), and the pressure meter (9) is mounted on the pore pressure fluid injection tube (5). The triaxial seepage stress temperature creep coupling experimental device can be used for accurately and automatically measuring creep deformation by searching the influences of the surrounding pressure, the axial pressure, the hole pressure, the temperature and the creep deformation on coal permeability.
Description
Technical field
The present invention relates to rock mechanics field, be specifically related to a kind of three axle seepage stress temperature creep coupling experiment devices based on digital picture.
Background technology
Coal, rock are natural geologic bodies, suffer the effect of terrestrial stress for a long time.After hand excavation's disturbance, terrestrial stress and temperature change, also usually suffer the effect of stress chronically simultaneously, the impact of this permeance property on coal, rock mass is very large, and research stress, temperature and long-term stress effect are the keys of the engineerings such as rock engineering stability analysis, coal bed gas extraction and diaster prevention and control to the infiltrative affecting laws of coal petrography;
Existing coal, rock three axle seepage experimental apparatus generally can study stress to the infiltrative impact of coal petrography, actual coal, rock medium are composed and are deposited and condition of work complexity, not only suffer the effect of excavation disturbance stress, also suffer temperature stress, chronically effect of stress etc., cause coal petrography space to compress, change the permeance property of coal and rock.In addition, coal, rock medium normally hard brittle material, the deformation of creep is small, adopt conventional method (as clock gauge) not easily Accurate Measurement, and test process is complicated, needs to introduce new method and observes.
Summary of the invention
The object of the invention is to provide a kind of three axle seepage stress temperature creep coupling experiment devices based on digital picture, and it can solve problem existing in background technology effectively.
In order to solve problem existing in background technology, it comprises triaxial cell 1, digital picture recording geometry and triaxial cell's heating system, described triaxial cell 1 installs porose pressure application system, the axial compression application system being with voltage stabilizing and confined pressure application system;
Described hole pressure application system comprises Pore Pressure fluid injection conduit 5, one end of this Pore Pressure fluid injection conduit 5 is connected with the first forcing pump 8, hole pressure energy is provided by the first forcing pump 8, force value is measured by digital pressure gauge 9, described tensimeter 9 is arranged on Pore Pressure fluid injection conduit 5, the other end of described Pore Pressure fluid injection conduit 5 is connected with axial compression pressure head in sample top in triaxial cell 1, and application well pressure and sample end, the first accumulator 10 is provided with between the first described forcing pump 8 and the first digital pressure gauge 9, this first accumulator 10 is connected with Pore Pressure fluid injection conduit 5 by conduit, reach maintenance hole and press stable object,
Described axial compression application system comprises axial compression fluid injection conduit 6, one end of this axial compression fluid injection conduit 6 is provided with the second forcing pump 11, axial compression is provided by this second forcing pump 11, its other end connects the second digital pressure gauge 12, extend in axial compression fluid cavity b again, be provided with the second accumulator 13 between the second described digital pressure gauge 12 and axial compression fluid cavity b, this second accumulator 13 is connected with axial compression fluid injection conduit 6 by conduit, by accumulator 13 for sample provides stable axial compression;
Described confined pressure application system comprises confined pressure fluid injection conduit 7, one end of this confined pressure fluid injection conduit 7 is provided with the 3rd forcing pump 14, its other end enters in pressure chamber through the 3rd digital pressure gauge 15 through triaxial cell 1, and extend in casing 16, the 3rd accumulator 18 is provided with between the 3rd described digital pressure gauge 15 and casing 16,3rd accumulator 18 is connected with confined pressure fluid injection conduit 7 by conduit, there is provided confined pressure by the 3rd forcing pump 14 by a of fluid infusion pressure room, and ensure confined pressure steady by accumulator 18;
Described digital picture recording geometry comprises the digital camera 2 be arranged near triaxial cell 1, and this digital camera 2 is just to the axial pressure head end of triaxial cell 1, and the surface of the axial pressure head end of described triaxial cell 1 is laid with speckle;
Described triaxial cell's heating system comprises the heating tape 20 be wrapped in outside triaxial cell 1, this heating tape 20 is connected with temperature control distribution control enclosure 3, described temperature control distribution control enclosure 3 is connected with power supply by wire, described triaxial cell 1 is laid with temperature sensor 4, by temperature sensor 4 feedback temperature, control heating-up temperature by temperature control distribution control enclosure 3;
The bottom of described triaxial cell 1 is provided with the pressure head of contact sample, and pressure head arranges outflow tube 19.
The first described accumulator 10, second accumulator 13 and the 3rd accumulator 18 are equipped with emptying valve 17.
Owing to have employed above technical scheme, the present invention has following beneficial effect: this device can be utilized to study confined pressure, axial compression, hole pressure, temperature, the deformation of creep to the impact of coal permeability; Energy is accurate, the automatic measurement deformation of creep, reduces manpower and expends.
Accompanying drawing explanation
In order to be illustrated more clearly in the present invention, below in conjunction with accompanying drawing, embodiment is briefly described.
Fig. 1 is the structural representation of triaxial cell in the present invention;
Fig. 2 is digital picture layout chart in the present invention;
Fig. 3 is the annexation figure of triaxial cell and temperature control distribution control enclosure in the present invention.
Embodiment
The technological means realized to make the present invention, creation characteristic, reaching object and effect is easy to understand, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention being clearly and completely described.
Referring to Fig. 1-3, this embodiment is achieved by the following technical solutions, it comprises triaxial cell 1, digital picture recording geometry and triaxial cell's heating system, described triaxial cell 1 installs porose pressure application system, the axial compression application system being with voltage stabilizing and confined pressure application system;
Described hole pressure application system comprises Pore Pressure fluid injection conduit 5, one end of this Pore Pressure fluid injection conduit 5 is connected with the first forcing pump 8, hole pressure energy is provided by the first forcing pump 8, force value is measured by digital pressure gauge 9, described tensimeter 9 is arranged on Pore Pressure fluid injection conduit 5, the other end of described Pore Pressure fluid injection conduit 5 is connected with axial compression pressure head in sample top in triaxial cell 1, and application well pressure and sample end, the first accumulator 10 is provided with between the first described forcing pump 8 and the first digital pressure gauge 9, this first accumulator 10 is connected with Pore Pressure fluid injection conduit 5 by conduit, reach maintenance hole and press stable object,
Described axial compression application system comprises axial compression fluid injection conduit 6, one end of this axial compression fluid injection conduit 6 is provided with the second forcing pump 11, axial compression is provided by this second forcing pump 11, its other end connects the second digital pressure gauge 12, extend in axial compression fluid cavity b again, be provided with the second accumulator 13 between the second described digital pressure gauge 12 and axial compression fluid cavity b, this second accumulator 13 is connected with axial compression fluid injection conduit 6 by conduit, by accumulator 13 for sample provides stable axial compression;
Described confined pressure application system comprises confined pressure fluid injection conduit 7, one end of this confined pressure fluid injection conduit 7 is provided with the 3rd forcing pump 14, its other end enters in pressure chamber through the 3rd digital pressure gauge 15 through triaxial cell 1, and extend in casing 16, the 3rd accumulator 18 is provided with between the 3rd described digital pressure gauge 15 and casing 16,3rd accumulator 18 is connected with confined pressure fluid injection conduit 7 by conduit, there is provided confined pressure by the 3rd forcing pump 14 by a of fluid infusion pressure room, and ensure confined pressure steady by accumulator 18;
Described digital picture recording geometry comprises the digital camera 2 be arranged near triaxial cell 1, and this digital camera 2 is just to the axial pressure head end of triaxial cell 1, and the surface of the axial pressure head end of described triaxial cell 1 is laid with speckle.
Described triaxial cell's heating system comprises the heating tape 20 be wrapped in outside triaxial cell 1, this heating tape 20 is connected with temperature control distribution control enclosure 3, described temperature control distribution control enclosure 3 is connected with power supply by wire, described triaxial cell 1 is laid with temperature sensor 4, by temperature sensor 4 feedback temperature, control heating-up temperature by temperature control distribution control enclosure 3;
The bottom of described triaxial cell 1 is provided with the pressure head of contact sample, and pressure head arranges outflow tube 19.
The first described accumulator 10, second accumulator 13 and the 3rd accumulator 18 are equipped with emptying valve 17.
Embodiment 1
Referring to Fig. 1-3, utilize this experimental provision to complete stress seepage flow temperature coupling experiment process: after test specimen is installed, apply confined pressure, axial compression to predetermined value, then heat triaxial cell's 1 to predetermined temperature, application well pressure again, measures the permeability at different confined pressure, axial compression and temperature.
Embodiment 2
Referring to Fig. 1-3, this experimental provision is utilized to complete stress seepage flow creep coupling experiment process: after test specimen is installed, apply confined pressure, axial compression to predetermined value, through utilizing digital picture recording geometry to test axial strain value after a period of time, then application well pressure, adopts steady flow method test permeability, and then through after a while, repeat said process, obtain the permeability of different creep time.
Last it is noted that above embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art should be appreciated that it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (2)
1. based on three axle seepage stress temperature creep coupling experiment devices of digital picture, it is characterized in that it comprises triaxial cell (1), digital picture recording geometry and triaxial cell's heating system, described triaxial cell (1) is upper installs porose pressure application system, the axial compression application system being with voltage stabilizing and confined pressure application system;
Described hole pressure application system comprises Pore Pressure fluid injection conduit (5), one end of this Pore Pressure fluid injection conduit (5) is connected with the first forcing pump (8), hole pressure energy is provided by the first forcing pump (8), force value is measured by digital pressure gauge (9), described tensimeter (9) is arranged on Pore Pressure fluid injection conduit (5), the other end of described Pore Pressure fluid injection conduit (5) is connected with triaxial cell (1) interior sample top axial compression pressure head, and application well pressure and sample end, the first accumulator (10) is provided with between described the first forcing pump (8) and the first digital pressure gauge (9), this first accumulator (10) is connected with Pore Pressure fluid injection conduit (5) by conduit, reach maintenance hole and press stable object,
Described axial compression application system comprises axial compression fluid injection conduit (6), one end of this axial compression fluid injection conduit (6) is provided with the second forcing pump (11), axial compression is provided by this second forcing pump (11), its other end connects the second digital pressure gauge (12), extend in axial compression fluid cavity b again, the second accumulator (13) is provided with between described the second digital pressure gauge (12) and axial compression fluid cavity b, this second accumulator (13) is connected with axial compression fluid injection conduit (6) by conduit, by accumulator (13) for sample provides stable axial compression,
Described confined pressure application system comprises confined pressure fluid injection conduit (7), one end of this confined pressure fluid injection conduit (7) is provided with the 3rd forcing pump (14), its other end enters in pressure chamber through the 3rd digital pressure gauge (15) through triaxial cell (1), and extend in casing (16), the 3rd accumulator (18) is provided with between the 3rd described digital pressure gauge (15) and casing (16), 3rd accumulator (18) is connected with confined pressure fluid injection conduit (7) by conduit, confined pressure is provided by a of fluid infusion pressure room by the 3rd forcing pump (14), and ensure confined pressure steady by accumulator (18),
Described digital picture recording geometry comprises the digital camera (2) be arranged near triaxial cell (1), this digital camera (2) is just to the axial pressure head end of triaxial cell (1), and the surface of the axial pressure head end of described triaxial cell (1) is laid with speckle;
Described triaxial cell's heating system comprises the heating tape (20) being wrapped in outside, triaxial cell (1), this heating tape (20) is connected with temperature control distribution control enclosure (3), described temperature control distribution control enclosure (3) is connected with power supply by wire, described triaxial cell (1) is laid with temperature sensor (4), by temperature sensor (4) feedback temperature, control heating-up temperature by temperature control distribution control enclosure (3);
The bottom of described triaxial cell (1) is provided with the pressure head of contact sample, and pressure head arranges outflow tube (19).
2. the three axle seepage stress temperature creep coupling experiment devices based on digital picture according to claim 1, is characterized in that described the first accumulator (10), the second accumulator (13) and the 3rd accumulator (18) are equipped with emptying valve (17).
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| CN105675418A (en) * | 2016-03-21 | 2016-06-15 | 中国科学院武汉岩土力学研究所 | Oil-gas reservoir rock multi-field coupling hardness testing device and using method thereof |
| CN105806763A (en) * | 2016-03-16 | 2016-07-27 | 中国地质大学（武汉） | Visualized test device for hot dry rock crack seepage and heat exchange process |
| CN106769691A (en) * | 2016-11-22 | 2017-05-31 | 三峡大学 | The measuring equipment and its method for measurement of a kind of seepage force |
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| CN109307644A (en) * | 2018-12-05 | 2019-02-05 | 重庆大学 | The device of rock whole field deformation is observed under the conditions of a kind of seepage flow |
| CN109307625A (en) * | 2018-12-05 | 2019-02-05 | 重庆大学 | The device of rock whole field deformation is observed under the conditions of a kind of triaxial compressions |
| CN109507084A (en) * | 2018-12-27 | 2019-03-22 | 辽宁工程技术大学 | A kind of discrete material porosity intelligent recognition true triaxial experimental system and method |
| CN110057740A (en) * | 2019-04-28 | 2019-07-26 | 太原理工大学 | High temperature and pressure coal petrography supercritical carbon dioxide pressure break-creep-seepage tests method |
| CN111579385A (en) * | 2020-05-09 | 2020-08-25 | 山东大学 | Device and method for rock-like resin material low-temperature hydraulic coupling test |
| CN111735716A (en) * | 2020-07-09 | 2020-10-02 | 四川大学 | Rock temperature-stress coupling creep test device and test method under water environment |
| CN112903470A (en) * | 2021-01-18 | 2021-06-04 | 东北大学 | High-temperature seepage coupling experimental device and method based on hard rock true triaxial system |
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| CN105158144A (en) * | 2015-09-25 | 2015-12-16 | 山东科技大学 | Test method for coal matrix deformation mechanical parameters |
| CN105510144A (en) * | 2016-01-28 | 2016-04-20 | 中国科学院武汉岩土力学研究所 | Parallel-type rock temperature, seepage and stress coupling triaxial rheometer |
| CN105806763A (en) * | 2016-03-16 | 2016-07-27 | 中国地质大学（武汉） | Visualized test device for hot dry rock crack seepage and heat exchange process |
| CN105806763B (en) * | 2016-03-16 | 2018-04-27 | 中国地质大学（武汉） | A kind of hot dry rock fracture seepage and heat exchanging process visual test device |
| CN105675418A (en) * | 2016-03-21 | 2016-06-15 | 中国科学院武汉岩土力学研究所 | Oil-gas reservoir rock multi-field coupling hardness testing device and using method thereof |
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| CN106769691B (en) * | 2016-11-22 | 2019-11-08 | 三峡大学 | A kind of measuring equipment and its method for measurement of seepage force |
| CN106769691A (en) * | 2016-11-22 | 2017-05-31 | 三峡大学 | The measuring equipment and its method for measurement of a kind of seepage force |
| CN109307643A (en) * | 2018-12-05 | 2019-02-05 | 重庆大学 | The method of rock whole field deformation is observed under the conditions of a kind of seepage flow |
| CN109307644A (en) * | 2018-12-05 | 2019-02-05 | 重庆大学 | The device of rock whole field deformation is observed under the conditions of a kind of seepage flow |
| CN109307625A (en) * | 2018-12-05 | 2019-02-05 | 重庆大学 | The device of rock whole field deformation is observed under the conditions of a kind of triaxial compressions |
| CN109507084A (en) * | 2018-12-27 | 2019-03-22 | 辽宁工程技术大学 | A kind of discrete material porosity intelligent recognition true triaxial experimental system and method |
| CN109507084B (en) * | 2018-12-27 | 2021-06-29 | 辽宁工程技术大学 | Intelligent identification true triaxial experiment system and method for porosity of bulk material |
| CN110057740A (en) * | 2019-04-28 | 2019-07-26 | 太原理工大学 | High temperature and pressure coal petrography supercritical carbon dioxide pressure break-creep-seepage tests method |
| CN110057740B (en) * | 2019-04-28 | 2021-12-03 | 太原理工大学 | High-temperature high-pressure coal rock supercritical carbon dioxide fracturing-creep-seepage test method |
| CN111579385A (en) * | 2020-05-09 | 2020-08-25 | 山东大学 | Device and method for rock-like resin material low-temperature hydraulic coupling test |
| CN111735716A (en) * | 2020-07-09 | 2020-10-02 | 四川大学 | Rock temperature-stress coupling creep test device and test method under water environment |
| CN112903470A (en) * | 2021-01-18 | 2021-06-04 | 东北大学 | High-temperature seepage coupling experimental device and method based on hard rock true triaxial system |
| CN112903470B (en) * | 2021-01-18 | 2022-03-25 | 东北大学 | High-temperature seepage coupling experimental device and method based on hard rock true triaxial system |
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