CN203758855U - Rock-structural-plane bi-directional shear testing device with heating device - Google Patents
Rock-structural-plane bi-directional shear testing device with heating device Download PDFInfo
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- CN203758855U CN203758855U CN201420163629.3U CN201420163629U CN203758855U CN 203758855 U CN203758855 U CN 203758855U CN 201420163629 U CN201420163629 U CN 201420163629U CN 203758855 U CN203758855 U CN 203758855U
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Abstract
The utility model relates to a rock-structural-plane bi-directional shear testing device with a heating device. The rock-structural-plane bi-directional shear testing device comprises a test piece, a heating device, a press plate device, a roller group device, a loading device, a data acquisition device and a base, wherein the test piece consists of an upper disc rock block and a lower disc rock block which are bounded by a rock structural plane; the loading device comprises a normal-direction pressure loading device and a bi-directional shear force loading device; the press plate device comprises four press plates, namely an upper press plate, a lower press plate, a left press plate and a right press plate, and the lower press plate is arranged on the base; the roller group device comprises four press roller groups, the loading device and the press plate device are connected, and the friction between the test piece and the loading device is reduced; the heating device is used for heating the test piece, and the rock-structural-plane upper disc rock block and the rock-structural-plane lower disc rock block can be heated through controlling the temperature of silicone oil in heating holes; the data acquisition device is used for acquiring data on pressure, displacement and temperature. The rock-structural-plane bi-directional shear testing device has the advantages that the bi-directional shear of the rock-structural-plane test piece can be realized, and the research on shear properties of the rock structural plane at different temperatures can be realized.
Description
Technical field
The utility model relates to the shearing of rock structural face, is specifically related to a kind of rock structural face double direction shear test unit with heating arrangement.
Background technology
Rock structural face is ubiquitous medium in slope project, dam foundation engineering, mining engineering, the inner a large amount of discontinuity surfaces of rock mass affect and determine the physico-mechanical properties of rock mass, understand mechanics and the deformation behaviour thereof of rock structural face by shear test, for design and the construction thereof of various rock mass engineering projects provide important foundation.
Shear strength test is divided into non-limiting intensity shear test and restricted shear strength test.Non-limiting intensity shear test only has shear stress to exist on shear surface, there is no normal stress; On shear surface, except shear stress, also there is normal stress in restricted intensity shear test.Comparatively conventional be restricted intensity shear test, exists and rubs owing to applying between the pressing plate of normal pressure and rock sample, and therefore the shear resistance of surveying is friction force sum between rock sample actual shearing intensity and pressing plate and sample.
Owing to there is no the manufacturer's standard of unified shear testing maschine, numerous rock structural face shears are there are, these shears are generally to continue to use rock shearing device,, the structure of test unit is improved, but there is again difference with simple rock shearing in rock structural face shearing meanwhile, be that rock structural face is in shear history, rock structural face sample not only can produce relative sliding at shear direction, and also can produce displacement upwards in normal direction, cuts swollen displacement.Common rock shearing test unit is because the pressing plate that applies shearing directly contacts with sillar surface, friction force between pressing plate and sillar surface is larger, sillar can not move freely at clamp surface, thereby limited moving up and down of structural plane sillar, the rock structural face obtaining cut swollen displacement distortion.Therefore, common rocks shearing test device is not suitable for the dilatancy of study of rocks structural plane.
The shear of traditional rock structural face is unidirectional shear, the lower wall sillar of general restriction rock structural face, keep the lower wall sillar of rock structural face motionless, and the upper surface of upper dish sillar to rock structural face applies normal pressure, the side of upper dish sillar is applied to shearing force simultaneously, make to coil sillar on rock structural face, in the substrate of lower wall sillar, relative detrusion occurs, by analyzing the relation of shearing force and shear displacemant, obtain the shearing strength of rock structural face and shear mechanical characteristic.And often show as the upper and lower dish of the rock structural face time motion of the Instability of rock mass engineering project, as the changing of the relative positions slippage of rock structural face under geological process.Mechanical characteristic when dish and lower wall are cut simultaneously on study of rocks structural plane need to be developed the test unit of rock structural face double direction shear.
Rock shows different mechanical properties of rock under condition of different temperatures, therefore, under condition of different temperatures, rock structural face is sheared and will be presented different mechanical properties and cut Zhang Xiaoying, and numerous test at present does not all relate to the development of rock shearing testing machine under condition of different temperatures.
Utility model content
The above-mentioned technical matters existing for prior art, the utility model proposes a kind of rock structural face double direction shear test unit with heating arrangement.
The technical scheme in the invention for solving the above technical problem is as follows: comprise test specimen, heating arrangement, presser device, charger, data collector and base; Described test specimen is upper dish sillar and the lower wall sillar taking rock structural face as boundary; Described presser device is coated described test specimen, comprise upper and lower, left and right four block pressur plates, described upper and lower pressing plate is parallel just to arranging, the parallel setting of staggering of described left and right pressing plate, described lower platen is placed on base, and described top board and left pressing plate, lower platen and right pressing plate are bolted respectively fixing; Described charger is divided into normal pressure charger and shearing force charger, and described normal pressure charger applies normal pressure to test specimen, and described shearing force charger applies left and right double direction shear power to test specimen; Described heating arrangement heats test specimen; Described data collector is cut swollen displacement, loading shear displacemant speed, shearing force and shear displacemant to test specimen temperature, normal pressure, normal direction and is carried out data acquisition.
In the above-mentioned rock structural face double direction shear test unit with heating arrangement, described heating arrangement comprises the rubber plug of the bottoming hole of thoroughly not wearing in upper and lower dish sillar and the Intermediate Gray heating rod matching, described rubber plug clamps by steel bar, and described steel bar is bolted on sillar surface.
In the above-mentioned rock structural face double direction shear test unit with heating arrangement, described normal pressure charger comprises seaming chuck, hydraulic cylinder and loads piston, described seaming chuck is positioned at directly over top board, be connected with hydraulic cylinder, load piston and be positioned at hydraulic cylinder, described charger is fixed on reaction frame.
In the above-mentioned rock structural face double direction shear test unit with heating arrangement, described shearing force charger comprises the servomotor, reductor, ball-screw, ball-screw cylinder and the left pressure head that connect successively from left to right, and described left pressure head is positioned at left pressing plate front-left.
In the above-mentioned rock structural face double direction shear test unit with heating arrangement, described data collector comprises controller and the first coupled pressure transducer, the second pressure transducer, the first elasticity modulus LVDT, the second elasticity modulus LVDT and temperature sensor, described the first pressure transducer is loading between piston and seaming chuck, described the second pressure transducer is between left pressure head and ball-screw cylinder, described the first elasticity modulus LVDT is positioned at seaming chuck left upper end, described the second elasticity modulus LVDT is positioned at seaming chuck upper right side, described temperature sensor is positioned at, on lower wall sillar.
In the above-mentioned rock structural face double direction shear test unit with heating arrangement, also comprise roller group device, described roller group device comprises four of upper and lower, left and right pressure roller group, described upper pressure roller group is between seaming chuck and top board, described lower compression roller group is between lower platen and base, described left pressure roller group is between left pressure head and left pressing plate, and described right pressure roller group is between right pressure head and right pressing plate.
The beneficial effects of the utility model are:
(1) the utility model arranges biaxial loadings device, can the upper and lower dish sillar of rock structural face be applied shearing force simultaneously and obtained shearing strength and the shear property of rock structural face under double direction shear.
(2) the utility model arranges heating arrangement, can obtain the rock structural face shear property under condition of different temperatures.
(3) the utility model arranges left and right pressure roller group, allows the upper and lower dish sillar of rock structural face freely to move up and down by pressure roller group, thereby accurately obtains the Normal Displacement in rock structural face shear history, cuts swollen displacement.
Brief description of the drawings
Fig. 1 is apparatus structure schematic diagram of the present utility model.
Fig. 2 is heating arrangement schematic diagram of the present utility model.
In figure: 1, reaction frame, 2, hydraulic cylinder, 3, load piston, 4, the first pressure transducer, 5, rubber plug, 6, the first elasticity modulus LVDT, 7, the second elasticity modulus LVDT, 8, seaming chuck, 9, upper pressure roller group, 10, top board, 11, left pressing plate, 12, left pressure roller group, 14, left pressure head, 15, the second pressure transducer, 16, ball-screw, 17, lower compression roller group, 18, servomotor, 19, steel bar, 20, bottoming hole, 21, rock structural face, 22, lower platen, 23, right pressing plate, 24, right pressure roller group, 25, heating rod, 26, right pressure head, 29, base, 31, controller, 32, rock structural face lower wall sillar, 33, on rock structural face, coil sillar, 34, ball-screw cylinder, 35, temperature sensor, 36, reductor, 37, slideway.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail, but the utility model is not limited to this.
As Fig. 1,2, the utility model comprises test specimen, heating arrangement, presser device, roller group device, charger, data collector and base.Described test specimen is upper dish sillar 33 and the lower wall sillar 32 taking rock structural face 21 as boundary, described heating arrangement comprises the rubber plug 5 of the bottoming hole 20 of thoroughly not wearing in upper and lower dish sillar and the Intermediate Gray heating rod 25 matching, described rubber plug 5 clamps by steel bar 19, described steel bar 19 is bolted on sillar surface, and described heating arrangement heats test specimen, described presser device is coated described specimen appliance, comprise upper and lower, left and right four block pressur plates, described top board 10 is parallel with lower platen 22 just to arranging, the stagger setting parallel with right pressing plate 23 of described left pressing plate 11, described lower platen 22 is placed on base 29, and described base 29 is fixed on reaction frame 1 lower end, described top board 10 is bolted respectively fixing with left pressing plate 11, lower platen 22 with right pressing plate 23, described charger is divided into normal pressure charger and shearing force charger, described normal pressure charger applies normal pressure to test specimen, described shearing force charger applies shearing force to test specimen, described normal pressure charger comprises seaming chuck 8, hydraulic cylinder 2, loads piston 3, described seaming chuck 8 is positioned at directly over top board 10, be connected with hydraulic cylinder 2, load piston 3 and be positioned at hydraulic cylinder 2, described shearing force charger comprises the servomotor 18, reductor 36, ball-screw 16, ball-screw cylinder 34 and the left pressure head 14 that connect successively from left to right, described left pressure head 14 is positioned at left pressing plate 11 front-lefts, servomotor 18 and reductor 36 drive ball-screw cylinder 34 to move along slideway 37, apply shearing force from left to right thereby realize left pressure head to coiling sillar 33 on rock structural face, described roller group device comprises pressure roller group 9, lower compression roller group 17, left pressure roller group 12 and right pressure roller group 24, described upper pressure roller group 9 is between seaming chuck 8 and top board 10, described lower compression roller group 17 is between lower platen 22 and base 29, described left pressure roller group 12 is between left pressure head 14 and left pressing plate 11, and described right pressure roller group 24 is between right pressure head 26 and right pressing plate 23, described data collector comprises controller 31 and the first coupled pressure transducer 4, the second pressure transducer 15, the first elasticity modulus LVDT 6, the second elasticity modulus LVDT 7, heating rod 25 and temperature sensor 35, described the first pressure transducer 4 is loading between piston 3 and seaming chuck 8, described the second pressure transducer 15 is between left pressure head 14 and ball-screw cylinder 34, described the first elasticity modulus LVDT 6 is positioned at seaming chuck 8 left ends, described the second elasticity modulus LVDT 7 is positioned at seaming chuck 8 right-hand members, described heating rod 25 stretches into bottoming hole 20 bottoms, described temperature sensor 35 is positioned on dish sillar 33 and lower wall sillar 32.
The course of work of the present utility model is as follows:
(1) test specimen is made and heating: choose maokou limestone rock structural face at mine working engineering site, all become to cut into lower wall sillar by coiling sillar on maokou limestone rock structural face: the test specimen of length × wide × height=20cm × 10cm × 15cm, on maokou limestone rock structural face, coil sillar 33, 4 bottoming holes 20 of each processing on lower wall sillar 32, its degree of depth is 2/3 of rock sample thickness, then inject the high temperature resistant silicone oil of high-quality therein, use the rubber plug 5 heated sealed holes 20 with heating rod 25, with high temperature resistant glue by rubber plug 5 and bottoming hole 20 is bonding and sealing, and rubber plug 5 is blocked tightly bottoming hole 20 by steel bar 19, bolt is fixed on steel bar 19 on the surface of rock structural face upper lower burrs sillar, bonding and sealing 24h after, controller 31 is controlled the heating-up temperature of heating rod 25, by on maokou limestone rock structural face, the temperature of lower wall sillar is heated to 50 DEG C, heating 5h obtains by coiling sillar and lower wall sillar temperature sensor 35 everywhere on rock structural face, the average temperature value of lower wall sillar is 48.5 DEG C.
(2) apply normal pressure: the size of controlling normal pressure by controller 31 is 40KN, the loading piston 3 of the hydraulic cylinder 2 of servomechanism installation provides normal pressure 40KN to seaming chuck 8, and seaming chuck 8 is passed to normal pressure 40KN on rock structural face, to coil sillar 33 by upper pressure roller group 9 and top board 10.
(4) apply shearing force: ball-screw 16 drives left pressure head 14 to apply shearing force to coiling 33 on rock structural face from left to right, controlling the loading shear displacemant speed of coiling on rock structural face by controller 31 is 0.005mm/s; The loading shear displacemant speed of controlling rock structural face lower wall by controller 31 is 0.005mm/s.
(5) data acquisition: by the first elasticity modulus LVDT 6, the normal direction of coiling sillar 33 on the rock structural face in the second elasticity modulus LVDT 7 Real-time Collection rock structural face shear histories is cut swollen displacement, gather the size of the shearing force of the upper and lower dish sillar of real-time rock structural face by the second pressure transducer 15, control in real time the normal pressure of rock structural face sillar simultaneously by the first pressure transducer 4.
It is 4.26 MPa ± 0.82 that the maokou limestone rock structural face that above-mentioned treatment conditions obtain is sheared peak strength, and it is 0.75 ± 0.30mm that peak value is cut swollen displacement.
Claims (6)
1. the rock structural face double direction shear test unit with heating arrangement, is characterized in that: comprise test specimen, heating arrangement, presser device, charger, data collector and base; Described test specimen is upper dish sillar and the lower wall sillar taking rock structural face as boundary; Described presser device is coated described test specimen, comprise upper and lower, left and right four block pressur plates, described upper and lower pressing plate is parallel just to arranging, the parallel setting of staggering of described left and right pressing plate, described lower platen is placed on base, and described top board and left pressing plate, lower platen and right pressing plate are bolted respectively fixing; Described charger is divided into normal pressure charger and shearing force charger, and described normal pressure charger applies normal pressure to test specimen, and described shearing force charger applies left and right double direction shear power to test specimen; Described heating arrangement heats test specimen; Described data collector is cut swollen displacement, loading shear displacemant speed, shearing force and shear displacemant to test specimen temperature, normal pressure, normal direction and is carried out data acquisition.
2. the rock structural face double direction shear test unit with heating arrangement according to claim 1, it is characterized in that: described heating arrangement comprises the rubber plug of the bottoming hole of thoroughly not wearing in upper and lower dish sillar and the Intermediate Gray heating rod matching, described rubber plug clamps by steel bar, and described steel bar is bolted on sillar surface.
3. the rock structural face double direction shear test unit with heating arrangement according to claim 1 and 2, it is characterized in that: described normal pressure charger comprises seaming chuck, hydraulic cylinder and loads piston, described seaming chuck is positioned at directly over top board, be connected with hydraulic cylinder, load piston and be positioned at hydraulic cylinder, described charger is fixed on reaction frame.
4. the rock structural face double direction shear test unit with heating arrangement according to claim 1 and 2, it is characterized in that: described shearing force charger comprises the servomotor, reductor, ball-screw, ball-screw cylinder and the left pressure head that connect successively from left to right, and described left pressure head is positioned at left pressing plate front-left.
5. the rock structural face double direction shear test unit with heating arrangement according to claim 1 and 2, it is characterized in that: described data collector comprises controller and the first coupled pressure transducer, the second pressure transducer, the first elasticity modulus LVDT, the second elasticity modulus LVDT and temperature sensor, described the first pressure transducer is loading between piston and seaming chuck, described the second pressure transducer is between left pressure head and ball-screw cylinder, described the first elasticity modulus LVDT is positioned at seaming chuck left upper end, described the second elasticity modulus LVDT is positioned at seaming chuck upper right side, described temperature sensor is positioned at, on lower wall sillar.
6. the rock structural face double direction shear test unit with heating arrangement according to claim 1 and 2, it is characterized in that: also comprise roller group device, described roller group device comprises four of upper and lower, left and right pressure roller group, described upper pressure roller group is between seaming chuck and top board, described lower compression roller group is between lower platen and base, described left pressure roller group is between left pressure head and left pressing plate, and described right pressure roller group is between right pressure head and right pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420163629.3U CN203758855U (en) | 2014-04-05 | 2014-04-05 | Rock-structural-plane bi-directional shear testing device with heating device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420163629.3U CN203758855U (en) | 2014-04-05 | 2014-04-05 | Rock-structural-plane bi-directional shear testing device with heating device |
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| CN203758855U true CN203758855U (en) | 2014-08-06 |
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| CN201420163629.3U Expired - Fee Related CN203758855U (en) | 2014-04-05 | 2014-04-05 | Rock-structural-plane bi-directional shear testing device with heating device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749049A (en) * | 2015-04-21 | 2015-07-01 | 武汉理工大学 | Rock mass structural surface shear test method and device |
| CN106290023A (en) * | 2016-07-26 | 2017-01-04 | 山东科技大学 | Rock mass circulation shear assay device and test method |
| CN109187225A (en) * | 2018-08-16 | 2019-01-11 | 东南大学 | A kind of multipurpose interface shearing performance testing device and its test method |
| CN109269915A (en) * | 2018-10-29 | 2019-01-25 | 中国科学院武汉岩土力学研究所 | The constant normal stiffness shearing test apparatus of rock structural face and its test method |
-
2014
- 2014-04-05 CN CN201420163629.3U patent/CN203758855U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104749049A (en) * | 2015-04-21 | 2015-07-01 | 武汉理工大学 | Rock mass structural surface shear test method and device |
| CN104749049B (en) * | 2015-04-21 | 2017-11-17 | 武汉理工大学 | A kind of rock mass discontinuity shearing test method and device |
| CN106290023A (en) * | 2016-07-26 | 2017-01-04 | 山东科技大学 | Rock mass circulation shear assay device and test method |
| CN106290023B (en) * | 2016-07-26 | 2019-05-24 | 山东科技大学 | Rock mass circulation shear experimental rig and test method |
| CN109187225A (en) * | 2018-08-16 | 2019-01-11 | 东南大学 | A kind of multipurpose interface shearing performance testing device and its test method |
| CN109269915A (en) * | 2018-10-29 | 2019-01-25 | 中国科学院武汉岩土力学研究所 | The constant normal stiffness shearing test apparatus of rock structural face and its test method |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140806 Termination date: 20170405 |
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| CF01 | Termination of patent right due to non-payment of annual fee |