CN104990802A - General triaxial test device capable of testing heat conductivity coefficient of rock - Google Patents
General triaxial test device capable of testing heat conductivity coefficient of rock Download PDFInfo
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- CN104990802A CN104990802A CN201510406187.XA CN201510406187A CN104990802A CN 104990802 A CN104990802 A CN 104990802A CN 201510406187 A CN201510406187 A CN 201510406187A CN 104990802 A CN104990802 A CN 104990802A
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Abstract
The invention discloses a general triaxial test device capable of testing heat conductivity coefficient of rock, which comprises a top cover, an upper seat and a base seat, wherein the top part of the upper seat and the top cover define an oil cavity; a piston moving along the axial direction is arranged in the oil cavity; the two ends of the axial direction of the piston respectively extend out of the top cover and the upper seat; the bottom part of the upper seat and the base seat define a test space; the upper part of the test space is provided with a vent passage communicated with the outside; the bottom part of the test space is provided with an oil transport passage; a rock sample is arranged between the lower end of the piston and the top part of the base seat; the bottom part of the rock sample is provided with a mounting hole extending upwards along the axial direction; the mounting hole is internally provided with a heat probe; the tail end of the heat probe is connected with an external data control and acquisition system. By adopting the general triaxial test device, a mechanical test and a test of heat conductivity coefficient can be carried out on the rock sample simultaneously, and the device is reasonable in structure, easy to manufacture, simple to operate, precise in measuring of a test system and high in automation degree.
Description
Technical field
The present invention relates to Geotechnical Engineering field, refer to particularly a kind ofly be applied to the ordinary triaxial test device can testing rock coefficient of heat conductivity in indoor rock mechanics experiment.
Background technology
Coefficient of heat conductivity is the important thermal parameters of of rock.Dispose at level radioactive nuclear waste, in geothermal energy resources exploitation and the engineering such as underground oil and gas storage, the coefficient of heat conductivity of rock has great significance for the multi-scenarios method research of rock mass engineering project, is day by day subject to people's attention.Stress state in rock loading procedure and internal injury have important impact to coefficient of heat conductivity, carry out the thermodynamic test of rock, and study of rocks stress state and the impact of damage on coefficient of heat conductivity, the thermosetting coupling mechanism fully realizing rock mass engineering project is had great significance, and better support can be provided for rock mass engineering projects such as level radioactive nuclear waste disposal.But in prior art, the mechanical test (as ordinary triaxial test) of rock Determination of conductive coefficients and rock is carried out respectively, can not test the numerical value of coefficient of heat conductivity in rock sample loading procedure.
Summary of the invention
Object of the present invention is exactly the deficiency that will solve above-mentioned background technology, provides a kind of ordinary triaxial test device testing rock coefficient of heat conductivity, can carry out the test of rock coefficient of heat conductivity while carrying out mechanical test to rock sample.
Technical scheme of the present invention is: a kind of ordinary triaxial test device testing rock coefficient of heat conductivity, it is characterized in that: comprise the top cover of also coaxial setting successively from top to bottom, the seat of honour and base, top, the described seat of honour and described top cover surround oil pocket, be provided with the piston of movement vertically in described oil pocket, the axial two ends of described piston stretch out described top cover and the seat of honour respectively; Surround the test space for placing rock sample bottom the described seat of honour with described base, described test space top is provided with the exhaust passage communicated with the external world, and described test space bottom is provided with oil transportation channel; Rock sample is arranged between described piston and described base top, the mounting hole upwards extended vertically is provided with bottom described rock sample, thermal probe is provided with in described mounting hole, described thermal probe tail end is fixedly installed on described base top, and described thermal probe tail end is connected with extraneous Data Control and acquisition system by data line.
In such scheme:
Top, the described seat of honour is provided with the back-up ring that a circle extends upward, and described top cover is fixedly installed on described back-up ring top, and the space that the described seat of honour, back-up ring and described top cover surround is oil pocket.
Described piston is cross, and it comprises vertically disposed vertical bar and transverse bar, and the two ends of described vertical bar stretch out described top cover and the seat of honour respectively, and two ends and the described back-up ring inwall of described transverse bar are slidably connected; Described back-up ring is disposed radially two oil passage and lower oily passages be arranged in parallel, described in oil passage and lower oily passage lay respectively at the vertical both sides of described transverse bar.
Be fixedly connected with by multiple connecting link be circularly and evenly distributed between the described seat of honour and described base.
The projection to downward-extension is provided with bottom the described seat of honour, described base top is provided with two-layer step, described step comprises the first step and second step that arrange from bottom to up, by sleeve connection between the sidewall of described projection and described first step, the region that the described seat of honour, sleeve and base surround is the test space.
Described exhaust passage upwards extends from described protruding bottom and extend to seat of honour lateral wall after 90 ° of bending; Described oil transportation channel is from described first step top to downward-extension and extend to chassis outer side wall through 90 ° of bendings.
In rock sample parcel rubber sleeve, bottom described rubber sleeve, be fixedly set in described second step sidewall.
Described second step top is provided with flat groove, described thermal probe tail end is fixedly installed in described flat groove, described data line is connected through the Data Control in wire routing channels and the external world and acquisition system, and described wire routing channels is from described first step top to downward-extension and extend to chassis outer side wall through 90 ° of bendings.
The difficult problem that the mechanical test (ordinary triaxial test) that the invention solves rock Determination of conductive coefficients and rock can not be carried out simultaneously, the test of coefficient of heat conductivity can be carried out while mechanical test is carried out to rock sample, and it is rational in infrastructure, be easy to manufacture, simple to operate, measuring system is accurate, and automaticity is high.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the flat channel section schematic diagram in the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
With reference to figure 1, a kind of ordinary triaxial test device testing rock coefficient of heat conductivity of the present embodiment, comprise the top cover 2 of also coaxial setting successively from top to bottom, the seat of honour 3 and base 7, top, the seat of honour 3 is provided with the back-up ring 3.1 that a circle extends upward, top cover 2 is bolted and is arranged on back-up ring 3.1 top, and the space that the seat of honour 3, back-up ring 3.1 surround with top cover 2 is oil pocket 15.The piston 1 of movement is vertically provided with in oil pocket 15, piston 1 is in cross, it comprises vertically disposed vertical bar 1.1 and transverse bar 1.2, the two ends of vertical bar 1.1 stretch out top cover 2 and the seat of honour 3 respectively, oil pocket 15 is divided into upper and lower two parts by transverse bar 1.2, and two ends and back-up ring 3.1 inwall of transverse bar 1.2 are slidably connected; Back-up ring 3.1 is disposed radially two oil passage 11 and lower oily path 10s be arranged in parallel, oil passage 11 and lower oily path 10 lays respectively at the vertical both sides of transverse bar 1.2, and be connected with hydraulic servo pump respectively, hydraulic servo pump loads axial force by the passage 11 that oils to oiling in oil pocket top, hydraulic servo pump by lower oily path 10 to oil pocket bottom conveying liquid force feed so that off-test time piston 1 promote.
Be fixedly connected with by multiple connecting link be circularly and evenly distributed bottom the seat of honour 3 of the present embodiment and between base 7.The projection 3.2 to downward-extension is provided with bottom the seat of honour 3, base 7 top is provided with two-layer step, step comprises the first step 7.1 and second step 7.2 that arrange from bottom to up, protruding 3.2 are arranged with diameter with first step 7.1, connected by sleeve 5 between its sidewall, the region that the seat of honour 3, sleeve 5 surround with base 7 is the test space 16 of placing rock sample 17.Be provided with on the test space 16 top and communicate with the external world and exhaust passage 4 for being vented, exhaust passage 4 is from upwards extending bottom protruding 3.1 and extend to the seat of honour 3 lateral wall after 90 ° of bendings; Test space bottom is provided with oil transportation channel 9, oil transportation channel 9 is from first step top to downward-extension and extend to base 7 lateral wall through 90 ° of bendings, oil transportation channel 9 is also connected with hydraulic servo pump, and hydraulic servo pump loads confined pressure to rock sample 17 by oil transportation channel 9 to sleeve 5 delivered inside hydraulic oil.
The rock sample 17 of the present embodiment is arranged between piston 1 lower end and base 7 top, the mounting hole 18 upwards extended vertically is provided with bottom rock sample 17, thermal probe 12 is provided with in mounting hole 18, thermal probe 12 tail end is fixedly installed on second step 7.2 top and arranges in flat groove 13 (with reference to figure 2), thermal probe 12 tail end is connected with data line, data line is connected with extraneous Data Control and acquisition system through wire routing channels 8, wire routing channels 8, as the introduction passage of data line, extends to base 7 lateral wall from first step top to downward-extension through 90 ° of bendings.
In the rock sample parcel rubber sleeve 14 of the present embodiment, be fixedly set in second step 7.2 sidewall bottom rubber sleeve 14, enter in the mounting hole 18 of rock sample to prevent hydraulic oil.
The base 7 of the present embodiment is respectively equipped with O-ring seal with piston 1, top cover 2 with piston 1 surface of contact with top cover 2, the seat of honour 3 with sleeve 5, the seat of honour 3, for ensureing the inner sealing of oil pocket of this device and the reliability of loading with sleeve 5, the seat of honour 3.
Its principle of work of ordinary triaxial test device of the present invention is:
1, rock sample 17 is prepared, and the mounting hole 18 upwards extended vertically is set respectively bottom rock sample 17, foil gauge is pasted in rock sample 17 side, thermal probe 12 is placed in the center pit 18 of rock sample 17, the data line of thermal probe 12 is drawn in flat groove 13, be connected with Data Control and acquisition system by wire routing channels 8 together with foil gauge data line, carry out the parcel of rubber sleeve 14 at rock sample 17;
2, sleeve 5 is positioned on base 7, the seat of honour 3 is positioned on sleeve 5, place piston 1 in oil pocket 15, top cover 2 is inserted in piston 1 and is positioned over above the seat of honour 3, top cover 2 is connected by the back-up ring 3.1 of bolt with top, the seat of honour 3, connecting link 6 through the seat of honour 3 and base 7 threaded hole and the seat of honour 3 is connected with base 7;
3, oil transportation channel 9, lower oily path 10 and the passage 11 that oils are connected respectively hydraulic servo pump, close exhaust passage 4, oil transportation channel 9, lower oily path 10 and the passage 11 that oils before on-test;
4, when confined pressure need be loaded, open exhaust passage 4, oil transportation channel 9, by hydraulic servo pump to oil transportation channel 9 conveying liquid force feed, exhaust passage 4 is closed when exhaust passage 4 has hydraulic oil to flow out, continue to load confined pressure to setting value, when off-test needs to unload confined pressure, open exhaust passage 4, oil transportation channel 9;
5, when loading axial force, by hydraulic servo pump to the passage 11 conveying liquid force feed that oils to setting value, the oil pressure of hydraulic servo pump during off-test, is unloaded;
6, when needs measure coefficient of heat conductivity, stop loading, keep certain stress state, tested the coefficient of heat conductivity of rock sample by thermal probe 12.
7, during off-test, take off connecting link 6, top cover 2 successively, by the downward oily path 10 transfusion force feed of hydraulic servo pump and jigger lifting piston 1, take off piston 1 and unload the oil pressure of hydraulic servo pump, take off the seat of honour 3, sleeve 5 successively, obtain rock sample, and take out thermal probe 12.
The difficult problem that the mechanical test (ordinary triaxial test) that the invention solves rock Determination of conductive coefficients and rock can not be carried out simultaneously, the test of coefficient of heat conductivity can be carried out while mechanical test is carried out to rock sample, and it is rational in infrastructure, be easy to manufacture, simple to operate, measuring system is accurate, and automaticity is high.
The above is only preferred embodiment of the present invention, not does any pro forma restriction to structure of the present invention.Every above embodiment is done according to technical spirit of the present invention any simple modification, equivalent variations and modification, all still belong in the scope of technical scheme of the present invention.
Claims (8)
1. can test the ordinary triaxial test device of rock coefficient of heat conductivity for one kind, it is characterized in that: comprise the top cover (2) of also coaxial setting successively from top to bottom, the seat of honour (3) and base (7), (3) top, the described seat of honour and described top cover (2) surround oil pocket (15), be provided with the piston (1) of movement vertically in described oil pocket (15), described piston (1) axial two ends stretch out described top cover (2) and the seat of honour (3) respectively; Bottom, the described seat of honour (3) and described base (7) surround the test space (16) for placing rock sample, the described test space (16) top is provided with the exhaust passage (4) communicated with the external world, and the described test space (16) bottom is provided with oil transportation channel (9); Rock sample (17) is arranged between described piston (1) lower end and described base (7) top, described rock sample (17) bottom is provided with the mounting hole (18) upwards extended vertically, thermal probe (12) is provided with in described mounting hole (18), described thermal probe (12) tail end is fixedly installed on described base (7) top, and described thermal probe (12) tail end is connected with extraneous Data Control and acquisition system by data line.
2. a kind of ordinary triaxial test device testing rock coefficient of heat conductivity according to claim 1, it is characterized in that: the described seat of honour (3) top is provided with the back-up ring (3.1) that a circle extends upward, described top cover (2) is fixedly installed on described back-up ring (3.1) top, and the space that the described seat of honour (3), back-up ring (3.1) and described top cover (2) surround is oil pocket (15).
3. a kind of ordinary triaxial test device testing rock coefficient of heat conductivity according to claim 2, it is characterized in that: described piston (1) is in cross, it comprises vertically disposed vertical bar (1.1) and transverse bar (1.2), the two ends of described vertical bar (1.1) stretch out described top cover (2) and the seat of honour (3) respectively, and two ends and described back-up ring (3.1) inwall of described transverse bar (1.2) are slidably connected; Described back-up ring (3.1) is disposed radially two passages that oil (11) and lower oily passage (10) be arranged in parallel, described in oil passage (11) and lower oily passage (10) lay respectively at the vertical both sides of described transverse bar (1.2).
4. a kind of ordinary triaxial test device testing rock coefficient of heat conductivity according to claim 1, is characterized in that: between the described seat of honour (3) and described base (7), multiple connecting link be circularly and evenly distributed is fixedly connected with.
5. a kind of ordinary triaxial test device testing rock coefficient of heat conductivity according to claim 1 or 4, it is characterized in that: the described seat of honour (3) bottom is provided with the projection (3.2) to downward-extension, described base (7) top is provided with two-layer step, described step comprises the first step (7.1) and second step (7.2) that arrange from bottom to up, be connected by sleeve (5) between described projection (3.2) and the sidewall of described first step (7.1), the described seat of honour (3), the region that sleeve (5) and base (7) surround is the test space.
6. a kind of ordinary triaxial test device testing rock coefficient of heat conductivity according to claim 5, is characterized in that: described exhaust passage (4) upwards extend from described projection (3.2) bottom and after 90 ° of bendings, extend to the seat of honour (3) lateral wall; Described oil transportation channel (9) is from described first step top to downward-extension and extend to base (7) lateral wall through 90 ° of bendings.
7. a kind of ordinary triaxial test device testing rock coefficient of heat conductivity according to claim 5, it is characterized in that: in rock sample (17) parcel rubber sleeve (14), described rubber sleeve (14) bottom is fixedly set in described second step (7.2) sidewall.
8. a kind of ordinary triaxial test device testing rock coefficient of heat conductivity according to claim 7, it is characterized in that: described second step (7.2) top is provided with flat groove (13), described thermal probe (12) tail end is fixedly installed in described flat groove (13), described data line is connected through the Data Control in wire routing channels (8) and the external world and acquisition system, and described wire routing channels (8) is from described first step top to downward-extension and extend to base (7) lateral wall through 90 ° of bendings.
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| CN201510406187.XA CN104990802A (en) | 2015-07-10 | 2015-07-10 | General triaxial test device capable of testing heat conductivity coefficient of rock |
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| CN201510406187.XA CN104990802A (en) | 2015-07-10 | 2015-07-10 | General triaxial test device capable of testing heat conductivity coefficient of rock |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106442614A (en) * | 2016-09-21 | 2017-02-22 | 中国地质大学（武汉） | Rock thermophysical parameter testing method and testing system under conditions of high temperature and high pressure |
| CN106525898A (en) * | 2016-12-06 | 2017-03-22 | 中国科学院武汉岩土力学研究所 | True triaxial test device capable of testing rock heat conductivity coefficients |
| CN106596628A (en) * | 2016-12-06 | 2017-04-26 | 中国科学院武汉岩土力学研究所 | True triaxial test method capable of testing heat conductivity coefficient of rock |
| CN106770449A (en) * | 2017-02-22 | 2017-05-31 | 中国地质调查局南京地质调查中心 | The measurement apparatus of rock thermal conductivity factor under high-temperature and high-pressure conditions |
| CN106932433A (en) * | 2017-02-28 | 2017-07-07 | 湖北工业大学 | The true triaxial device and method of thermal conductivity factor under test rock temperature and STRESS VARIATION |
| CN110274928A (en) * | 2019-07-03 | 2019-09-24 | 重庆大学 | The simulation experiment method of coal and rock HEAT TRANSFER LAW under deep mining Geothermal Conditions |
| CN112083029A (en) * | 2020-08-13 | 2020-12-15 | 四川士达特种炭材有限公司 | Device and method for evaluating comprehensive performance of filler |
| CN114166643A (en) * | 2021-12-08 | 2022-03-11 | 中国科学院武汉岩土力学研究所 | High-pressure unloading fracturing test system |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442614A (en) * | 2016-09-21 | 2017-02-22 | 中国地质大学（武汉） | Rock thermophysical parameter testing method and testing system under conditions of high temperature and high pressure |
| CN106442614B (en) * | 2016-09-21 | 2018-11-02 | 中国地质大学（武汉） | Rock thermal physical property parameter test method and test system under a kind of high temperature and pressure |
| CN106525898A (en) * | 2016-12-06 | 2017-03-22 | 中国科学院武汉岩土力学研究所 | True triaxial test device capable of testing rock heat conductivity coefficients |
| CN106596628A (en) * | 2016-12-06 | 2017-04-26 | 中国科学院武汉岩土力学研究所 | True triaxial test method capable of testing heat conductivity coefficient of rock |
| CN106525898B (en) * | 2016-12-06 | 2023-08-11 | 中国科学院武汉岩土力学研究所 | True triaxial test device capable of testing rock heat conductivity coefficient |
| CN106770449A (en) * | 2017-02-22 | 2017-05-31 | 中国地质调查局南京地质调查中心 | The measurement apparatus of rock thermal conductivity factor under high-temperature and high-pressure conditions |
| CN106770449B (en) * | 2017-02-22 | 2020-01-31 | 中国地质调查局南京地质调查中心 | Device for measuring heat conductivity coefficient of rock under high-temperature and high-pressure conditions |
| CN106932433A (en) * | 2017-02-28 | 2017-07-07 | 湖北工业大学 | The true triaxial device and method of thermal conductivity factor under test rock temperature and STRESS VARIATION |
| CN110274928A (en) * | 2019-07-03 | 2019-09-24 | 重庆大学 | The simulation experiment method of coal and rock HEAT TRANSFER LAW under deep mining Geothermal Conditions |
| CN112083029A (en) * | 2020-08-13 | 2020-12-15 | 四川士达特种炭材有限公司 | Device and method for evaluating comprehensive performance of filler |
| CN114166643A (en) * | 2021-12-08 | 2022-03-11 | 中国科学院武汉岩土力学研究所 | High-pressure unloading fracturing test system |
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Application publication date: 20151021 |