CN203376239U - Rock mass seepage-stress coupling testing device - Google Patents
Rock mass seepage-stress coupling testing device Download PDFInfo
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- CN203376239U CN203376239U CN201320336643.4U CN201320336643U CN203376239U CN 203376239 U CN203376239 U CN 203376239U CN 201320336643 U CN201320336643 U CN 201320336643U CN 203376239 U CN203376239 U CN 203376239U
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Abstract
The utility model relates to a rock mass seepage-stress coupling testing device. The device related by the utility model comprises an axial pressure servo system, an ambient pressure servo system, a water (gas) pressure servo system, a data acquisition system and a data processing system and can be used for carrying out still water compression, overall process of triaxial compression and a stress-seepage coupling test under loading and unloading circulation. The current ambient pressure and partial pressure values, axial, circular and volume strain values and inlet and outlet end pressure values of a rock sample are measured and recorded through the data acquisition system in real time; the data processing system is used for drawing a corresponding stress-strain curve, an inlet/outlet end pressure-time travel curve and a sample deformation and pore water (gas) pressure curve, then, automatically calculating the permeability, porosity and axial and lateral Biot coefficients of the rock sample and storing and displaying the permeability, porosity and axial and lateral Biot coefficients of the rock sample. The testing device can be used for finishing a stress-seepage coupling test of a rock material, especially a low-seepage rock under a complex stress path and is reliable in test result and capable of visually displaying the test result.
Description
Technical field
The utility model relates to a kind of coupling device, especially relates to a kind of rock aqueous vapor seepage-stress coupling test device.
Background technology
Deformation characteristic and the Penetration Signature research of rock under the complex stress environment is the field key project constructions such as large-scale water conservancy and hydropower, deep resource exploitation, oil/gas energy underground storage, underground space utilization key issues in the urgent need to address.Due to the complicacy of rock tax dis environment, under the effect of various engineering loads, rock initially stress field is transformed, and Stress Field Distribution changes, and rock produces the evolution of distortion and microscopical structure, thereby causes the Penetration Signature of rock to change; Correspondingly, the variation of permeability of rock will cause the distribution of seepage field to change, from and further transform the rock stress field.This interaction of rock seepage field and stress field and influence each other and be called the rock action of seepage-stress coupling, rock stress-seepage coupling test is the key of carrying out rock stress field and the research of seepage field coupling mechanism.Yet conventional field testing procedure is difficult to obtain the Changing Pattern of Penetration Signature in process of rock deformation, the permeability test in employing rock indoor three axial compression compression process can disclose the Evolution of permeability in its stress-strain overall process.
Since the fifties in last century, the Penetration Signature research in rock three axial compression compression process has been subject to the attention of academia and engineering circles.Yet, most of permeability test of domestic and international many scholars mainly for the osmotic coefficient ratio higher permeability 10
-12～10
-16m
2the rock sample of magnitude, in three axial compression compression process, permeability of low-leakage stone is 10
-16～10
-22m
2the permeability test achievement of magnitude is actually rare.Existing achievement in research shows, total stress-the strain curve of rock in three axial compression compression process can be divided into initial densification stage, elastic deformation stage, local damage stage, acutely damage stage and peak after failure stage, in this process the Penetration Signature of rock correspondingly show as stablely before initial decline, elastic stability, peak increase, near peak value violent increase and peak after lower degradation feature.
Current, the laboratory study on behavior of permeability of rock (especially hypotonic rock) in three axial compression compression process become the study hotspot in international rock mechanics field, research technique adopts transient pulse technique more, and osmotic fluid adopts water or gas as nitrogen, helium more.Yet, due to singularity and the complicacy of permeability characteristic test in rock three axial compression compression process, domestic rock three axial compression contracting-(gas) coupling devices of perfect in shape and function of not yet developing at present.
The utility model content
Above-mentioned technical matters of the present utility model is mainly solved by following technical proposals:
A kind of rock aqueous vapor seepage-stress coupling test device, is characterized in that, comprises axial compression servo-drive system, confined pressure servo-drive system, infusion fluid systems, fluid permeability system, and the data sampling and processing device be connected with described system.
At above-mentioned a kind of rock aqueous vapor seepage-stress coupling test device, described axial compression servo-drive system comprises the servo high-precision hydraulic pump of axial compression, the first hydraulic valve be attached thereto, immediately the axial compression sensor after the first hydraulic valve; The servo high-precision hydraulic pump of described axial compression also is connected with the data sampling and processing device; Described axial compression sensor also is connected with the gas permeation system.
At above-mentioned a kind of rock aqueous vapor seepage-stress coupling test device, described confined pressure servo-drive system comprises the servo high-precision hydraulic pump of confined pressure, the second hydraulic valve be attached thereto, immediately the confined pressure sensor after the first hydraulic valve; The servo high-precision hydraulic pump of described confined pressure also is connected with the data sampling and processing device; Described axial compression sensor also is connected with the gas permeation system.
At above-mentioned a kind of rock aqueous vapor seepage-stress coupling test device, described infusion fluid systems comprises connected according to this high pressure nitrogen, air valve, gas pressure reducer, water bottle and the water valve be connected with water bottle, water/gas presses servo high-precision hydraulic pump and the 3rd hydraulic valve to be connected, be connected with above-mentioned water valve before described the 3rd hydraulic valve with after water (gas) presses the high-precision hydraulic pump to be connected, then be connected with the gas permeation system.
At above-mentioned a kind of rock aqueous vapor seepage-stress coupling test device, described fluid permeability system comprises entrance point, sample and sample sealing system, triaxial cell and supports load transfer device, endpiece; Wherein entrance point comprises entrance point pressure transducer, the 4th hydraulic valve, entrance point steel cylinder, the 5th hydraulic valve; Before described the 4th hydraulic valve with the entrance point pressure transducer, after with entrance point steel cylinder, the 5th hydraulic valve, be connected successively; The infiltration piston is placed at described sample two ends, and rubber case is by sample and infiltration piston parcel, and envelope gas banding hoop seals sample at the rubber case two ends; The 6th hydraulic valve that described triaxial cell and support load transfer device comprise triaxial cell, support, lifting jack, are placed in the bottom, pressure chamber and are connected with a fluid recovery container, be placed in pressure chamber and connect open to atmosphere the 7th hydraulic valve; Endpiece comprises the endpiece pressure transducer, the 8th hydraulic valve and connected endpiece steel cylinder, the 9th hydraulic valve in turn, and the tenth hydraulic valve, wherein the endpiece pressure transducer is connected with the 8th hydraulic valve, the tenth hydraulic valve respectively; Entrance point is connected by the 11 hydraulic valve with endpiece.
At above-mentioned a kind of rock aqueous vapor seepage-stress coupling test device, described data sampling and processing device comprises computer acquisition and disposal system.
Three processes that the utility model relates to are as follows:
Mechanical process: axial compression, confined pressure servo-drive system can realize hydrostatic compression, three axial compression contracting overall processes and add complex stress path processes such as unloading circulation, easy to operate, automaticity is high, and pressure process is carried out fully under computer control; Axial compression, confined pressure servo-drive system can axially apply 0～375MPa bias voltage at rock sample, and side direction applies 0～60MPa confined pressure, and the control accuracy of exerting pressure is 0.01MPa, can in two months, keep stable, and error is no more than 1%; Axial bias loads can select displacement, axial strain rate, normal pressure power gradient and four kinds of modes of varying stress gradient to control, and the side direction confined pressure loads can select hoop strain rate, normal pressure power and three kinds of modes of varying stress to control.
Flow event: by water/gas, press servo-drive system to apply pore water (gas) at rock sample import and export end and press, water/gas presses servo-drive system to be comprised of infusion fluid systems and fluid permeability system; Infusion fluid systems can provide the pore water pressure of 0～40MP or the high pure nitrogen of 0.1～10MPa, and the control accuracy of exerting pressure is 0.01MPa, and error is no more than 1%; The fluid permeability system can be carried out water (gas) permeability test of two different ranges of pipeline loop and steel cylinder loop.Pipeline loop can carry out 10
-16～10
-22m
2the fluid permeability test of range, be comprised of inlet pipeline, sample, outlet conduit, and inlet pipeline is connected by hydraulic valve with outlet conduit; The steel cylinder loop can carry out 10
-12～10
-18m
2the fluid permeability test of range, be comprised of inlet pipeline, import steel cylinder, sample, outlet steel cylinder, outlet conduit.
Coupling process: by axial compression, confined pressure servo-drive system, be applied to default confined pressure, bias value and keep stable, pressing servo-drive system to apply pore water (gas) at rock sample import and export end by water/gas and compress into capable coupling test.By the current confined pressure of the real-time survey record rock sample of data acquisition system (DAS), bias value, axially, hoop and bulk strain value, import and export end pressure value; Data handling system is drawn out corresponding stress-strain curve, import and export end pressure-time-history curves, sample deformation and pore water (gas) line of buckling, then automatically calculate the permeability, porosity of rock sample, axially reach side direction Biot coefficient, and stored and show.
Therefore, the utlity model has following advantage: can complete particularly hypotonic rock stress-seepage coupling test under the complex stress path of rock material, test findings is reliable, and can intuitively show.
The accompanying drawing explanation
Accompanying drawing 1 is rock three axial compression contracting-(gas) coupling device schematic diagram.
Accompanying drawing 2 is axial compression, confined pressure servo-drive system schematic diagram.
Accompanying drawing 3a is hydrostatic compression schematic diagram.
Accompanying drawing 3b is three axial compression contracting total stress-schematic illustration of strain.
Accompanying drawing 3c is for adding unloading circulation schematic diagram.
Accompanying drawing 4 is the infusion fluid systems schematic diagram.
Accompanying drawing 5 is the fluid permeability system schematic.
Embodiment
Below by embodiment, and by reference to the accompanying drawings, the technical solution of the utility model is described in further detail.In accompanying drawing: the servo high-precision hydraulic pump 1 of axial compression, the first hydraulic valve 2, axial compression sensor 3, the servo high-precision hydraulic pump 4 of confined pressure, the second hydraulic valve 5, confined pressure sensor 6, high pressure nitrogen 7, air valve 8, gas pressure reducer 9, water bottle 10, water valve 11, water/gas is pressed servo high-precision hydraulic pump 12, the 3rd hydraulic valve 13, entrance point pressure transducer 14, fluid recovery container 15, envelope gas hoop 16, rubber case 17, sample 18, infiltration piston 19, triaxial cell 20, support 21, lifting jack 22, the 6th hydraulic valve 23, the 7th hydraulic valve 24, the 11 hydraulic valve 25, the 4th hydraulic valve 26, entrance point steel cylinder 27, the 5th hydraulic valve 28, the 8th hydraulic valve 29, endpiece steel cylinder 30, the 9th hydraulic valve 31, endpiece pressure transducer 32, the tenth hydraulic valve 33, computer acquisition and disposal system 34.
Embodiment:
The utility model comprises axial compression servo-drive system, confined pressure servo-drive system, infusion fluid systems, fluid permeability system, and the data sampling and processing device be connected with described system.
Wherein, the axial compression servo-drive system comprises the servo high-precision hydraulic pump 1 of axial compression, the first hydraulic valve 2 be attached thereto, immediately the axial compression sensor 3 after the first hydraulic valve 2; The servo high-precision hydraulic pump 1 of described axial compression also is connected with the data sampling and processing device; Described axial compression sensor 3 also is connected with the gas permeation system.
The confined pressure servo-drive system comprises the servo high-precision hydraulic pump 4 of confined pressure, the second hydraulic valve 5 be attached thereto, immediately the confined pressure sensor 6 after the first hydraulic valve 5; The servo high-precision hydraulic pump 4 of described confined pressure also is connected with the data sampling and processing device; Described axial compression sensor 6 also is connected with the gas permeation system.
Infusion fluid systems comprises connected according to this high pressure nitrogen 7, air valve 8, gas pressure reducer 9, water bottle 11 and the water valve 10 be connected with water bottle 11, water/gas presses servo high-precision hydraulic pump 12 and the 3rd hydraulic valve 13 to be connected, be connected with above-mentioned water valve 10 before described the 3rd hydraulic valve 13 with after water (gas) presses high-precision hydraulic pump 12 to be connected, then be connected with the gas permeation system.
The fluid permeability system comprises entrance point, sample and sample sealing system, triaxial cell and supports load transfer device, endpiece; Wherein entrance point comprises entrance point pressure transducer 14, the 4th hydraulic valve 26, entrance point steel cylinder 27, the 5th hydraulic valve 28; Before described the 4th hydraulic valve 26 with entrance point pressure transducer 14, after with entrance point steel cylinder 27, the 5th hydraulic valve 28, be connected successively; Described sample 18 two ends are placed and are permeated piston 19, and rubber case 17 is by sample 18 and infiltration piston 19 parcels, and envelope gas hoop 16 lock rings seal sample 18 at rubber case 17 two ends; The 6th hydraulic valve 23 that described triaxial cell and support load transfer device comprise triaxial cell 20, support 21, lifting jack 22, are placed in 20 bottoms, pressure chamber and are connected with a fluid recovery container 15, be placed in pressure chamber 20 and connect open to atmosphere the 7th hydraulic valve 24; Endpiece comprises endpiece pressure transducer 32, the 8th hydraulic valve 29 and connected endpiece steel cylinder 30, the 9th hydraulic valve 31 in turn, the tenth hydraulic valve 33, wherein endpiece pressure transducer 32 is connected with the 8th hydraulic valve 29, the tenth hydraulic valve 33 respectively; Entrance point is connected by the 11 hydraulic valve 25 with endpiece.
The data sampling and processing device comprises computer acquisition and disposal system 34.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has more been used the servo high-precision hydraulic pump 1 of axial compression, the first hydraulic valve 2, axial compression sensor 3, the servo high-precision hydraulic pump 4 of confined pressure, the second hydraulic valve 5, confined pressure sensor 6, high pressure nitrogen 7, air valve 8, gas pressure reducer 9, water bottle 10, water valve 11, water/gas is pressed servo high-precision hydraulic pump 12, the 3rd hydraulic valve 13, entrance point pressure transducer 14, fluid recovery container 15, envelope gas hoop 16, rubber case 17, sample 18, infiltration piston 19, triaxial cell 20, support 21, lifting jack 22, the 6th hydraulic valve 23, the 7th hydraulic valve 24, the 11 hydraulic valve 25, the 4th hydraulic valve 26, entrance point steel cylinder 27, the 5th hydraulic valve 28, the 8th hydraulic valve 29, endpiece steel cylinder 30, the 9th hydraulic valve 31, endpiece pressure transducer 32, the tenth hydraulic valve 33, the terms such as computer acquisition and disposal system 34, but do not get rid of the possibility of using other term.Using these terms is only in order to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (2)
1. a rock aqueous vapor seepage-stress coupling test device, is characterized in that, comprises axial compression servo-drive system, confined pressure servo-drive system, infusion fluid systems, fluid permeability system, and the data sampling and processing device be connected with described system;
The first hydraulic valve (2) that described axial compression servo-drive system comprises the servo high-precision hydraulic pump of axial compression (1), is attached thereto, immediately the axial compression sensor (3) after the first hydraulic valve (2); The servo high-precision hydraulic pump of described axial compression (1) also is connected with the data sampling and processing device; Described axial compression sensor (3) also is connected with the gas permeation system;
The second hydraulic valve (5) that described confined pressure servo-drive system comprises the servo high-precision hydraulic pump of confined pressure (4), is attached thereto, immediately the confined pressure sensor (6) after the first hydraulic valve (5); The servo high-precision hydraulic pump of described confined pressure (4) also is connected with the data sampling and processing device; Described axial compression sensor (6) also is connected with the gas permeation system;
Described infusion fluid systems comprises connected according to this high pressure nitrogen (7), air valve (8), gas pressure reducer (9), water bottle (11) and the water valve (10) be connected with water bottle (11), water/gas presses servo high-precision hydraulic pump (12) and the 3rd hydraulic valve (13) to be connected, described the 3rd hydraulic valve (13) is front to be connected and to be connected with above-mentioned water valve (10) afterwards with vapour pressure high-precision hydraulic pump (12), then is connected with the gas permeation system;
Described fluid permeability system comprises entrance point, sample and sample sealing system, triaxial cell and supports load transfer device, endpiece; Wherein entrance point comprises entrance point pressure transducer (14), the 4th hydraulic valve (26), entrance point steel cylinder (27), the 5th hydraulic valve (28); Described the 4th hydraulic valve (26) front with entrance point pressure transducer (14), with entrance point steel cylinder (27), the 5th hydraulic valve (28), be connected successively afterwards; Infiltration piston (19) is placed at described sample (18) two ends, and rubber case (17) is by sample (18) and infiltration piston (19) parcel, and envelope gas hoop (16) lock ring seals sample (18) at rubber case (17) two ends; The 6th hydraulic valve (23) that described triaxial cell and support load transfer device comprise triaxial cell (20), support (21), lifting jack (22), are placed in (20) bottom, pressure chamber and are connected with a fluid recovery container (15), be placed in pressure chamber (20) and connect open to atmosphere the 7th hydraulic valve (24); Endpiece comprises endpiece pressure transducer (32), the 8th hydraulic valve (29) and connected endpiece steel cylinder (30), the 9th hydraulic valve (31) in turn, the tenth hydraulic valve (33), wherein endpiece pressure transducer (32) is connected with the 8th hydraulic valve (29), the tenth hydraulic valve (33) respectively; Entrance point is connected by the 11 hydraulic valve (25) with endpiece.
2. a kind of rock aqueous vapor seepage-stress coupling test device according to claim 1, is characterized in that, described data sampling and processing device comprises computer acquisition and disposal system (34).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320336643.4U CN203376239U (en) | 2013-06-09 | 2013-06-09 | Rock mass seepage-stress coupling testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320336643.4U CN203376239U (en) | 2013-06-09 | 2013-06-09 | Rock mass seepage-stress coupling testing device |
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| CN103344496A (en) * | 2013-06-09 | 2013-10-09 | 武汉大学 | Triaxial compression-water (gas) coupling apparatus and test method for rock |
| CN104155225A (en) * | 2014-07-24 | 2014-11-19 | 重庆大学 | Reservoir penetrating media heat-fluid-solid coupling multi-phase fluid fracturing-seepage pressure chamber |
| CN104596862A (en) * | 2015-01-30 | 2015-05-06 | 辽宁工程技术大学 | Rock creep-seepage coupling test system |
| CN105806766A (en) * | 2016-04-19 | 2016-07-27 | 兰州大学 | Flexible wall permeameter capable of measuring volume changes |
| CN108519317A (en) * | 2018-04-24 | 2018-09-11 | 钦州学院 | Rock stress-seepage coupling test device under uniaxial direct tensile load |
| CN110361312A (en) * | 2019-07-05 | 2019-10-22 | 河海大学 | The determination method of permeability and porosity relationship during rock seepage liquefaction |
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| CN111982692A (en) * | 2020-08-24 | 2020-11-24 | 中国科学院武汉岩土力学研究所 | Long-term deformation testing method for rock under different stress components and application thereof |
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| CN103344496A (en) * | 2013-06-09 | 2013-10-09 | 武汉大学 | Triaxial compression-water (gas) coupling apparatus and test method for rock |
| CN103344496B (en) * | 2013-06-09 | 2015-09-02 | 武汉大学 | A kind of rock triaxial compression-water (gas) coupling device and test method |
| CN104155225A (en) * | 2014-07-24 | 2014-11-19 | 重庆大学 | Reservoir penetrating media heat-fluid-solid coupling multi-phase fluid fracturing-seepage pressure chamber |
| CN104155225B (en) * | 2014-07-24 | 2017-01-18 | 重庆大学 | Reservoir penetrating media heat-fluid-solid coupling multi-phase fluid fracturing-seepage pressure chamber |
| CN104596862A (en) * | 2015-01-30 | 2015-05-06 | 辽宁工程技术大学 | Rock creep-seepage coupling test system |
| CN104596862B (en) * | 2015-01-30 | 2017-07-04 | 辽宁工程技术大学 | Creep of rock seepage coupling test system |
| CN105806766A (en) * | 2016-04-19 | 2016-07-27 | 兰州大学 | Flexible wall permeameter capable of measuring volume changes |
| CN105806766B (en) * | 2016-04-19 | 2019-01-18 | 兰州大学 | A kind of flexible wall permeameter for surveying body change |
| CN108519317A (en) * | 2018-04-24 | 2018-09-11 | 钦州学院 | Rock stress-seepage coupling test device under uniaxial direct tensile load |
| CN108519317B (en) * | 2018-04-24 | 2023-10-31 | 北部湾大学 | Rock stress-seepage coupling test device under direct tensile load |
| CN110593239A (en) * | 2019-06-27 | 2019-12-20 | 浙江大学 | Deep ground engineering in-situ stress field and seepage field hypergravity simulation system |
| WO2020259637A1 (en) * | 2019-06-27 | 2020-12-30 | 浙江大学 | Deep-earth engineering in-situ stress field and seepage field supergravity simulation system |
| CN110593239B (en) * | 2019-06-27 | 2021-01-15 | 浙江大学 | Deep ground engineering in-situ stress field and seepage field hypergravity simulation system |
| JP2022518977A (en) * | 2019-06-27 | 2022-03-17 | 浙江大学 | In-situ stress field and infiltration field supergravity simulation system for deep geological engineering |
| US11385159B2 (en) | 2019-06-27 | 2022-07-12 | Zhejiang University | Supergravity simulation system for In-situ stress field and seepage field of deep earth engineering |
| JP7169605B2 (en) | 2019-06-27 | 2022-11-11 | 浙江大学 | Supergravity simulation system for in situ stress field and seepage field for deep geological engineering |
| CN110361312A (en) * | 2019-07-05 | 2019-10-22 | 河海大学 | The determination method of permeability and porosity relationship during rock seepage liquefaction |
| CN110631936A (en) * | 2019-09-02 | 2019-12-31 | 中国矿业大学 | Quantitative evaluation test method for coal core damage |
| CN110631936B (en) * | 2019-09-02 | 2021-02-23 | 中国矿业大学 | Quantitative evaluation test method for coal core damage |
| CN111982692A (en) * | 2020-08-24 | 2020-11-24 | 中国科学院武汉岩土力学研究所 | Long-term deformation testing method for rock under different stress components and application thereof |
| CN112461668A (en) * | 2020-11-06 | 2021-03-09 | 武汉大学 | Test method for researching hydraulic fracturing induced fault activation |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20140101 Effective date of abandoning: 20150902 |
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| RGAV | Abandon patent right to avoid regrant |