AU2018357027A1 - Deformation measurement device and method of conventional triaxial compression test of cuboid rock sample - Google Patents
Deformation measurement device and method of conventional triaxial compression test of cuboid rock sample Download PDFInfo
- Publication number
- AU2018357027A1 AU2018357027A1 AU2018357027A AU2018357027A AU2018357027A1 AU 2018357027 A1 AU2018357027 A1 AU 2018357027A1 AU 2018357027 A AU2018357027 A AU 2018357027A AU 2018357027 A AU2018357027 A AU 2018357027A AU 2018357027 A1 AU2018357027 A1 AU 2018357027A1
- Authority
- AU
- Australia
- Prior art keywords
- deformation measurement
- measurement device
- axial
- horizontal clamp
- sample
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/06—Special adaptations of indicating or recording means
-
- 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
-
- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/025—Geometry of the test
- G01N2203/0258—Non axial, i.e. the forces not being applied along an axis of symmetry of the specimen
-
- 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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Disclosed are a deformation measurement device (1) and a method of a conventional triaxial compression test of a cuboid rock sample. The device comprises a set of axial deformation measurement device and two sets of lateral deformation measurement devices, wherein, the axial deformation measurement device comprises two pairs of completely same first horizontal clamp holders (8); two first horizontal sliding rods (5) are arranged between each pair of first horizontal clamp holders (8); two axial sliding rods (6) and a pair of displacement sensors (7) are arranged between the two pairs of first horizontal clamp holders (8); the two sets of lateral deformation measurement devices are arranged between the two pairs of first horizontal clamp holders (8); each set of lateral deformation measurement device comprises a pair of second horizontal clamp holders (9); two second horizontal sliding rods (10), two springs (12) and a pair of displacement sensors (7) are arranged between each pair of second horizontal clamp holders (9); the two sets of lateral deformation measurement devices are perpendicularly arranged. The present invention solves the problem that a measuring device for a cylindrical sample cannot be applied to a cuboid sample. The deformation measurement device (1) is simple to operate and high in measurement accuracy.
Description
DEFORMATION MEASUREMENT DEVICE AND METHOD OF CONVENTIONAL TRIAXIAL COMPRESSION TEST OF CUBOID ROCK SAMPLE
Technical Field
The present invention relates to the field of testing mechanical behaviors of rock in conventional tri-axial compression, in particular to a deformation measurement device and a method for tri-axial compression test of a cuboid rock sample.
Background Art
At present, the test samples used in conventional tri-axial tests of rocks are usually cylindrical samples. However, cylinder samples involve a problem that it is difficult to ascertain the positions of processing fractures and defects. Therefore, it is necessary to carry out conventional tri-axial compression test of cuboid rock samples. A circumferential measurement device for a cylindrical sample usually is a measurement ring formed from a chain, but a measurement ring is not suitable for a cuboid sample, mainly because that the measurement ring may be unable to rotate freely owing to a fact that a cuboid has edges and comers; consequently, the measurement data may be inaccurate. Therefore, the present invention discloses a set of deformation measurement device and a deformation measurement method for conventional tri-axial compression test of a cuboid rock sample, in order to solve a problem that a measurement device for a cylindrical sample cannot be applied to a cuboid sample.
Contents of the Invention
The object of the present invention is to provide a deformation measurement device and a deformation measurement method for conventional tri-axial compression test of a cuboid rock sample, in order to solve a problem that a measurement device for a cylindrical sample can't be applied to a cuboid sample.
To attain the object described above, the present invention employs the following technical scheme:
a deformation measurement device for conventional tri-axial compression test of a cuboid rock sample, comprising a set of axial deformation measurement device and two sets of lateral deformation measurement devices, wherein, the axial deformation measurement device comprises two pairs of identical first horizontal clamp holders arranged at an upper position and a lower position; two first horizontal sliding rods are arranged between each pair of first horizontal clamp holders, and two axial sliding rods and a pair of displacement sensors are arranged between the two pairs of first horizontal clamp holders;
the two sets of lateral deformation measurement devices are arranged between the two pairs of first horizontal clamp holders, each set of lateral deformation measurement device comprises a pair of second horizontal clamp holders, and two second horizontal sliding rods, two springs and a pair of displacement sensors are arranged between each pair of second horizontal clamp holders; the two sets of lateral deformation measurement devices are arranged perpendicularly to each other.
-1 An end of the first horizontal sliding rod is provided with a tightening screw that consists of a screw and an elastic component fitted over the screw.
Each second horizontal clamp holder is provided with a semi-circular lug, wherein the semi-circular lug on the upper second horizontal clamp holder faces downward, while the semi-circular lug on the lower second horizontal clamp holder faces upward.
A deformation measurement method for conventional tri-axial compression test of a cuboid rock sample, comprising the following steps:
(1) mounting the lower end portion of an axial deformation measurement device to the lower end of a sample for which a sealing operation has been completed, and fixing the lower end portion of the axial deformation measurement device with tightening screws;
(2) mounting two sets of lateral deformation measurement devices perpendicularly to each other on the sample, and ensuring that the semi-circular lugs on the lateral deformation measurement devices are at the center of the sample;
(3) mounting the upper end portion of the axial deformation measurement device to the upper end of the sample, and fixing the upper end portion of the axial deformation measurement device with tightening screws;
(4) mounting displacement sensors in the axial deformation measurement device and the lateral deformation measurement devices;
(5) pushing the mounted sample into a confining pressure chamber, charging oil, applying confining pressure, and performing conventional tri-axial compression test.
Beneficial effects: the device and method provided in the present invention are applicable to conventional tri-axial compression test of a cuboid rock sample, and solve a problem that a measurement device for a cylindrical sample cannot be applied to a cuboid sample. Through extensive practice, it is proven that the deformation measurement device is simple to operate and has high measurement accuracy.
Description of Drawings
Fig. 1 is a schematic 3D assembly diagram of the deformation measurement device in the present invention;
Fig. 2 is a schematic diagram of the axial deformation measurement device in the present invention;
Fig. 3 is a schematic diagram of the lateral deformation measurement device in the present invention;
Fig. 4 is a schematic diagram of the tightening screw in the present invention;
in the figures: 1 - deformation measurement device; 2 - first deformation measurement device; 3 second deformation measurement device; 4 - sample; 5 - first horizontal sliding rod; 6 - second axial sliding rod; 7 - displacement sensor; 8 - first horizontal clamp holder; 9 - second horizontal clamp holder; 10 - second horizontal sliding rod; 11 - tightening screw; 12 - spring; 13 semi-circular lug.
-2 Embodiments
Hereunder the present invention will be further detailed, with reference to the accompanying drawings.
As shown in Figs. 1-4, the deformation measurement device for conventional tri-axial compression test of a cuboid rock sample provided in the present invention comprises a set of axial deformation measurement device 1 and two sets of lateral deformation measurement devices, wherein, the axial deformation measurement device comprises two pairs of identical first horizontal clamp holders 8 arranged at an upper position and a lower position; two first horizontal sliding rods 5 are arranged between each pair of first horizontal clamp holders 8, and two axial sliding rods 6 and a pair of displacement sensors 7 are arranged between the two pairs of first horizontal clamp holders 8; each pair of first horizontal clamp holders 8 work with two first horizontal sliding rods 6 arranged between the each pair of first horizontal clamp holders 8 to ensure them in a plane, and the two pairs of first horizontal clamp holders 8 work with two axial sliding rods 6 to ensure that the displacement sensors 7 have no deflection; an end of the first horizontal sliding rod 5 is provided with a tightening screw 11, which, as shown in Fig. 4, consists of a screw and a spring fitted over the screw, and the tightening screw 11 is configured to ensure that the first horizontal clamp holders 8 are tightly fitted with the sample 4 and thereby ensure measurement accuracy.
The two sets of lateral deformation measurement devices are arranged between the two pairs of first horizontal clamp holders 8, and are a first deformation measurement device 2 and a second deformation measurement device 3 respectively, each set of lateral deformation measurement device comprises a pair of second horizontal clamp holders 9, and two second horizontal sliding rods 10, two springs 12 and a pair of displacement sensors 7 are arranged between each pair of second horizontal clamp holders 9; the first deformation measurement device 2 and the second deformation measurement device 3 are arranged perpendicularly to each other, and the second horizontal sliding rod 10 of the first deformation measurement device 2 and the second horizontal sliding rod 10 of the second deformation measurement device 3 are perpendicular to each other. Each pair of second horizontal clamp holders 9 work with two second horizontal sliding rods 10 to ensure that the displacement sensors 7 move in a plane and thereby ensure measurement accuracy; each pair of second horizontal clamp holders 9 work with the springs 12 to ensure the second horizontal clamp holders 9 tightly abut against the sample 4; each second horizontal clamp holder 9 is provided with a semi-circular lug 13, wherein the semi-circular lug 13 on the upper second horizontal clamp holder 9 faces downward, while the semi-circular lug 13 on the lower second horizontal clamp holder 9 faces upward, to ensure that the deformation measured by the two sets of lateral deformation measurement devices is the deformation at the center of the sample 4.
A deformation measurement method for conventional tri-axial compression test of a cuboid rock sample, comprising the following steps:
(1) mounting the lower end portion of an axial deformation measurement device 1 to the lower end of a sample 4 for which a sealing operation has been completed, and fixing the lower end portion of the axial deformation measurement device with tightening screws 11; at this point, the first horizontal clamp holders 8 shall be aligned to the lower end portion of the sample 4;
(2) mounting two sets of lateral deformation measurement devices perpendicularly to each other on the sample, and ensuring that the semi-circular lugs on the lateral deformation measurement devices are at the center of the sample;
(3) mounting an upper end portion of the axial deformation measurement device to the upper end of the sample, and fixing the upper end portion of the axial deformation measurement device with a tightening screw; at this point, the first horizontal clamp holders 8 shall be aligned to the upper end portion of the sample 4;
(4) mounting displacement sensors in the axial deformation measurement device and the lateral deformation measurement devices;
(5) pushing the mounted sample into a confining pressure chamber, charging oil, applying confining pressure, and performing conventional tri-axial compression test.
The above description is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and modifications without departing from the principles of the present invention. Those improvements and modifications should be considered to fall into the scope of protection of the present invention.
Claims
Claims (5)
1. A deformation measurement device for conventional tri-axial compression test of a cuboid rock sample, comprising a set of axial deformation measurement device and two sets of lateral deformation measurement devices, wherein, the axial deformation measurement device comprises two pairs of identical first horizontal clamp holders (8) arranged at an upper position and a lower position; two first horizontal sliding rods (5) are arranged between each pair of first horizontal clamp holders (8), and two axial sliding rods (6) and a pair of displacement sensors (7) are arranged between the two pairs of first horizontal clamp holders (8);
the two sets of lateral deformation measurement devices are arranged between the two pairs of first horizontal clamp holders (8), each set of lateral deformation measurement device comprises a pair of second horizontal clamp holders (9), and two second horizontal sliding rods (10), two springs (12) and a pair of displacement sensors (7) are arranged between each pair of second horizontal clamp holders (9); the two sets of lateral deformation measurement devices are arranged perpendicularly to each other.
2. The deformation measurement device for conventional tri-axial compression test of a cuboid rock sample according to claim 1, wherein, an end of the first horizontal sliding rod (5) is provided with a tightening screw (11) that consists of a screw and an elastic component fitted over the screw.
3. The deformation measurement device for conventional tri-axial compression test of a cuboid rock sample according to claim 1, wherein, each second horizontal clamp holder (9) is provided with a semi-circular lug (13), wherein the semi-circular lug (13) on the upper second horizontal clamp holder (9) faces downward, while the semi-circular lug (13) on the lower second horizontal clamp holder (9) faces upward.
4. A deformation measurement method for conventional tri-axial compression test of a cuboid rock sample based on the device according to any one of claims 1-3, comprising the following steps:
(1) mounting the lower end portion of an axial deformation measurement device to the lower end of a sample for which a sealing operation has been completed, and fixing the lower end portion of the axial deformation measurement device with tightening screws;
(2) mounting two sets of lateral deformation measurement devices perpendicularly to each other on the sample, and ensuring that the semi-circular lugs on the lateral deformation measurement devices are at the center of the sample;
(3) mounting the upper end portion of the axial deformation measurement device to the upper end of the sample, and fixing the upper end portion of the axial deformation measurement device with tightening screws;
(4) mounting displacement sensors in the axial deformation measurement device and the lateral deformation measurement devices;
(5) pushing the mounted sample into a confining pressure chamber, charging oil, applying confining pressure, and performing conventional tri-axial compression test.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710991210.5 | 2017-10-23 | ||
| CN201710991210.5A CN107764636B (en) | 2017-10-23 | 2017-10-23 | A kind of deformation measuring device and method of cuboid rock sample conventional triaxial compression test |
| PCT/CN2018/079578 WO2019080439A1 (en) | 2017-10-23 | 2018-03-20 | Deformation measurement device and method of conventional triaxial compression test of cuboid rock sample |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2018357027A1 true AU2018357027A1 (en) | 2020-01-23 |
| AU2018357027B2 AU2018357027B2 (en) | 2021-06-10 |
Family
ID=61269089
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2018357027A Active AU2018357027B2 (en) | 2017-10-23 | 2018-03-20 | Deformation measurement device and method of conventional triaxial compression test of cuboid rock sample |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN107764636B (en) |
| AU (1) | AU2018357027B2 (en) |
| WO (1) | WO2019080439A1 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764636B (en) * | 2017-10-23 | 2019-04-19 | 中国矿业大学 | A kind of deformation measuring device and method of cuboid rock sample conventional triaxial compression test |
| CN109342194B (en) * | 2018-12-20 | 2024-02-13 | 东北大学 | Rock sample transverse deformation measuring device |
| CN113203622A (en) * | 2021-04-26 | 2021-08-03 | 温州大学 | Real-time measuring system for detecting radial displacement of geotechnical triaxial sample |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3728895A (en) * | 1970-12-18 | 1973-04-24 | Trw Inc | Triaxial compression test apparatus |
| SU700838A1 (en) * | 1978-06-09 | 1979-11-30 | Московский Ордена Трудового Красного Знамени Инженерно-Строительный Институт Им. В.В.Куйбышева | Device for investigating properties of soil under the conditions of triaxial compression |
| SU1357764A1 (en) * | 1985-01-10 | 1987-12-07 | Пушкинское высшее военное инженерное строительное училище | Arrangement for testing specimens in complex stressed state |
| US4579003A (en) * | 1985-01-22 | 1986-04-01 | Riley Brodie D | Instrument for testing earthen samples under triaxial load conditions |
| SU1613917A1 (en) * | 1988-09-07 | 1990-12-15 | Калининский политехнический институт | Installation for testing prismatic samples for three-axial compression |
| FR2649202B1 (en) * | 1989-06-29 | 1992-05-07 | Inst Francais Du Petrole | DEVICE FOR APPLYING THREE-DIMENSIONAL CONSTRAINTS TO A SAMPLE OF MATERIAL |
| FR2688590B1 (en) * | 1992-03-12 | 1994-06-03 | Cachan Ecole Normale Superieur | TRIAXIAL TENSION / COMPRESSION TEST. |
| US5435187A (en) * | 1994-06-23 | 1995-07-25 | Exxon Production Research Company | End-cap-to-piston coupling for triaxial test apparatus |
| JP3773005B2 (en) * | 1996-12-26 | 2006-05-10 | 株式会社フジタ | Plane strain compression test equipment |
| KR100536959B1 (en) * | 2003-08-20 | 2005-12-19 | 한국지질자원연구원 | True triaxial compression test system |
| HUP0501196A2 (en) * | 2005-12-22 | 2007-10-29 | Nandor Dr Tamaskovics | Method and apparatus for measuring mechanical property of solid materials |
| UA24609U (en) * | 2007-02-05 | 2007-07-10 | Univ Vinnytsia Nat Tech | Triaxial compression machine |
| CN101458192B (en) * | 2009-01-06 | 2011-06-08 | 中国科学院武汉岩土力学研究所 | Slide transverse type symmetrical loading structure |
| RU2418283C1 (en) * | 2010-03-04 | 2011-05-10 | Общество с ограниченной ответственностью "Научно-производственное предприятие "Геотек" (ООО "НПП "Геотек") | Instrument of triaxial compression |
| CN102607946B (en) * | 2012-02-28 | 2015-07-15 | 武汉大学 | Device for large-scale true tri-axial test of original grading rockfill body and use method of method |
| CN102636382B (en) * | 2012-03-31 | 2014-07-09 | 中国矿业大学(北京) | Experimental equipment for simulating impact-type rock explosion |
| PL226028B1 (en) * | 2014-01-24 | 2017-06-30 | Kghm Cuprum Spółka Z Ograniczoną Odpowiedzialnością Centrum Badawczo Rozwojo | Method and the device for testing of rock samples |
| CN204188492U (en) * | 2014-10-17 | 2015-03-04 | 中国石油大学(北京) | Rock true triaxial permeability clamper |
| CN104344997B (en) * | 2014-11-04 | 2017-01-11 | 同济大学 | Passive type restraint loading device for triaxial test |
| CN106248482B (en) * | 2016-07-08 | 2019-12-24 | 山东大学 | Triaxial test device and method suitable for weak rock |
| CN106872275A (en) * | 2017-04-13 | 2017-06-20 | 石家庄铁道大学 | A kind of simple three-dimensional loading and unloading device and its detection method |
| CN107764636B (en) * | 2017-10-23 | 2019-04-19 | 中国矿业大学 | A kind of deformation measuring device and method of cuboid rock sample conventional triaxial compression test |
-
2017
- 2017-10-23 CN CN201710991210.5A patent/CN107764636B/en active Active
-
2018
- 2018-03-20 AU AU2018357027A patent/AU2018357027B2/en active Active
- 2018-03-20 WO PCT/CN2018/079578 patent/WO2019080439A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CN107764636B (en) | 2019-04-19 |
| CN107764636A (en) | 2018-03-06 |
| WO2019080439A1 (en) | 2019-05-02 |
| AU2018357027B2 (en) | 2021-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| AU2018357027A1 (en) | Deformation measurement device and method of conventional triaxial compression test of cuboid rock sample | |
| CN203629528U (en) | Outer revolution surface roundness detector | |
| CN104266558A (en) | Internal tooth and external tooth symmetry degree detecting device | |
| CN203672259U (en) | Shifting fork inspection fixture | |
| CN105043232A (en) | Device and method for calibrating dragged LVDT displacement sensor | |
| CN203385347U (en) | Shaft step size gauge | |
| CN103994715A (en) | Device and method for measuring minimum diameter of diameter shrinkage portion of tensile sample after fracture | |
| KR20090077379A (en) | Holder for measuring velocity of elastic wave and apparatus for measuring velocity of elastic wave | |
| RU2665497C1 (en) | Method of measuring parameters on the end of the bushing | |
| JP2016099167A (en) | Fatigue test method, fatigue test piece and fatigue tester | |
| CN203672281U (en) | Circular arc radius detection assembly | |
| CN208366511U (en) | A kind of cable force monitoring device based on fiber-optic grating sensor | |
| CN103759615A (en) | Circular arc radius detection assembly | |
| CN104457631A (en) | Pneumatic hole depth detection device | |
| CN208567709U (en) | A kind of dimension measurement tool | |
| KR101003389B1 (en) | Inspection gauge for pressing pipe | |
| CN104062735A (en) | Clamping device and method for large-aperture diffraction grating | |
| WO2014036010A1 (en) | Shear displacement extensometer | |
| CN205826253U (en) | A kind of optics leak detection test system adjustable formula positioner | |
| CN204214366U (en) | A kind of fast measuring digital display slide calliper rule | |
| CN109269912B (en) | Mining adhesive tape bending stiffness electronic detector | |
| CN108020466B (en) | Split type miniature extensometer for measuring stretching deformation of small-sized in-situ stretching instrument | |
| CN205482722U (en) | Measurement device for adopt method of comparison to measure big internal diameter of shallow tang | |
| CN205300469U (en) | Measure device that both ends identity distance leaves | |
| CN104977213A (en) | Portable in-situ erosion rate measuring instrument for rock |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FGA | Letters patent sealed or granted (standard patent) |