CN203758856U - Rock structural plane two-way shearing testing device - Google Patents
Rock structural plane two-way shearing testing device Download PDFInfo
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- CN203758856U CN203758856U CN201420163643.3U CN201420163643U CN203758856U CN 203758856 U CN203758856 U CN 203758856U CN 201420163643 U CN201420163643 U CN 201420163643U CN 203758856 U CN203758856 U CN 203758856U
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- structural face
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Abstract
The utility model relates to a rock structural plane two-way shearing testing device. The device comprises test pieces, a pressing plate device, a roll set device, loading devices, a data acquisition device and a base, wherein the test pieces are upper and lower disc rocks with a rock structural plane as a boundary; the loading devices are divided into a normal pressure loading device and a two-way shearing force loading device; the pressing plate device comprises upper, lower, left and right pressing plates; the lower pressing plate is placed on the base; the roll set device comprises four press roll sets, connects the loading devices with the pressing plate device and reduces frictions between the test pieces and the loading devices; the data acquisition device acquires data of pressure and displacement. The device can achieve study on the two-way shearing characteristics of the rock structural plane test pieces.
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.
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, by shear test, understand mechanics and the deformation behaviour thereof of rock structural face, for design and the construction thereof of various rock mass engineering projects provides 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, have friction, so the shear resistance of surveying is friction force sum between rock sample actual shearing intensity and pressing plate and sample owing to applying between the pressing plate of normal pressure and rock sample.
Owing to there is no the manufacturer's standard of unified shear testing maschine, numerous rock structural face shears have been 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 directly contacts with sillar surface owing to applying the pressing plate of shearing, 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 the upper dish sillar of rock structural face is applied to 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.
Utility model content
For the above-mentioned technical matters of prior art existence, the utility model proposes a kind of rock structural face shearing test device of double direction shear.
The technical scheme in the invention for solving the above technical problem is as follows: comprise test specimen, presser device, charger, data collector and base; Described test specimen is for take upper dish sillar and the lower wall sillar that rock structural face is 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 over against setting, the parallel setting of staggering of described left and right pressing plate, described lower platen is placed on base, and described top board is bolted into respectively 7 fonts with left pressing plate, lower platen with right pressing plate; Described charger is divided into normal pressure charger and double direction shear force loading device, and described normal pressure charger applies normal pressure to test specimen, and described double direction shear force loading device applies left and right double direction shear power to 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 above-mentioned rock structural face double direction shear test unit, described normal pressure charger comprises seaming chuck, hydraulic cylinder and loading piston, and described seaming chuck is positioned at directly over top board, is connected with hydraulic cylinder, load piston and be positioned at hydraulic cylinder, described charger is fixed on reaction frame.
In above-mentioned rock structural face double direction shear test unit, described double direction shear force loading device comprises the left and right shearing force charger being oppositely arranged, described left shearing force charger comprises the first servomotor, the first reductor, the first ball-screw, the first ball-screw cylinder and the left pressure head connecting successively from left to right, and described left pressure head is positioned at left pressing plate front-left; Described right shearing force charger comprises and connects successively from right to left the second servomotor, the second reductor, the second ball-screw, the second ball-screw cylinder and right pressure head, and described right pressure head is positioned at right pressing plate front-right.
In above-mentioned rock structural face double direction shear test unit, described data collector comprises controller and the first coupled pressure transducer, the second pressure transducer, the 3rd pressure transducer, the first elasticity modulus LVDT and the second elasticity modulus LVDT, described the first pressure transducer is loading between piston and seaming chuck, described the second pressure transducer is between left pressure head and the first ball-screw cylinder, described the 3rd pressure transducer is between right pressure head and the second 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, .
In above-mentioned rock structural face double direction shear test unit, 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 apply shearing strength and the shear property that shearing force obtains rock structural face under double direction shear to the upper and lower dish sillar of rock structural face simultaneously.
(2) 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.
Accompanying drawing explanation
Fig. 1 is apparatus structure schematic diagram of the present utility model.
In figure: 1, reaction frame, 2, hydraulic cylinder, 3, load piston, 4, the first pressure transducer, 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, 13, the second ball-screw cylinder, 14, left pressure head, 15, the second pressure transducer, 16, the first ball-screw, 17, lower compression roller group, 18, the first servomotor, 21, rock structural face, 22, lower platen, 23, right pressing plate, 24, right pressure roller group, 26, right pressure head, 27, the 3rd pressure transducer, 28, the second ball-screw, 29, base, 30, the second servomotor, 31, controller, 32, rock structural face lower wall sillar, 33, on rock structural face, coil sillar, 34, the first ball-screw cylinder, 36, the first reductor, 37, the first slideway, 38, the second reductor, 39, the second 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, rock structural face double direction shear test unit of the present 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 with rock structural face 21Wei circle, 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 over against setting with lower platen 22, 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 into respectively 7 fonts with left pressing plate 11, lower platen 22 with right pressing plate 23, described charger is divided into normal pressure charger and double direction shear force loading device, described normal pressure charger applies normal pressure to test specimen, described double direction shear force loading device applies left and right double direction shear power 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 double direction shear force loading device comprises the left and right shearing force charger being oppositely arranged, described left shearing force charger comprises the first servomotor 18, the first reductor 36, the first ball-screw 16, the first ball-screw cylinder 34 and the left pressure head 14 connecting successively from left to right, described left pressure head 14 is positioned at left pressing plate 11 front-lefts, the first servomotor 18 and the first reductor 36 drive the first ball-screw cylinder 34 to move along the first slideway 37, thereby realize left pressure head, apply shearing force from left to right to coiling sillar 33 on rock structural face, described right shearing force charger comprises and connects successively from right to left the second servomotor 30, the second reductor 38, the second ball-screw 28, the second ball-screw cylinder 13 and right pressure head 26, described right pressure head 26 is positioned at right pressing plate 23 front-rights, the second servomotor 30 and the second reductor 38 drive the second ball-screw cylinder 13 to move along the second slideway 39, thereby realize right pressure head, from right to left rock structural face lower wall sillar 32 are applied to shearing force, 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 3rd pressure transducer 27, the first elasticity modulus LVDT 6 and the second elasticity modulus LVDT 7, 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 the first ball-screw cylinder 34, described the 3rd pressure transducer 27 is between right pressure head 26 and the second ball-screw cylinder 13, 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.
The course of work of the present utility model is as follows:
(1) test specimen is made: at mine working engineering site, choose maokou limestone rock structural face, all become to cut into: the test specimen of length * wide * height=20cm * 10cm * 15cm by coiling sillar on maokou limestone rock structural face with lower wall sillar.
(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: the first ball-screw 16 drives left pressure head 14 to coiling 33 on rock structural face, to apply shearing force from left to right, and by controller 31, controlling the loading shear displacemant speed of coiling on rock structural face is 0.005mm/s; The second ball-screw 28 drives right pressure head 26 from right to left rock structural face lower wall sillar 32 to be applied to shearing force, and 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, by the second pressure transducer 15, the 3rd pressure transducer 27, gather the size of the shearing force of the upper and lower dish sillar of real-time rock structural face, by the first pressure transducer 4, control in real time the normal pressure of rock structural face sillar simultaneously.
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 (5)
1. a rock structural face double direction shear test unit, is characterized in that: comprise test specimen, presser device, charger, data collector and base; Described test specimen is for take upper dish sillar and the lower wall sillar that rock structural face is 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 over against setting, the parallel setting of staggering of described left and right pressing plate, described lower platen is placed on base, and described top board is bolted into respectively 7 fonts with left pressing plate, lower platen with right pressing plate; Described charger is divided into normal pressure charger and double direction shear force loading device, and described normal pressure charger applies normal pressure to test specimen, and described double direction shear force loading device applies left and right double direction shear power to 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. rock structural face double direction shear test unit according to claim 1, 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.
3. rock structural face double direction shear test unit according to claim 1, it is characterized in that: described double direction shear force loading device comprises the left and right shearing force charger being oppositely arranged, described left shearing force charger comprises the first servomotor, the first reductor, the first ball-screw, the first ball-screw cylinder and the left pressure head connecting successively from left to right, and described left pressure head is positioned at left pressing plate front-left; Described right shearing force charger comprises and connects successively from right to left the second servomotor, the second reductor, the second ball-screw, the second ball-screw cylinder and right pressure head, and described right pressure head is positioned at right pressing plate front-right.
4. rock structural face double direction shear test unit according to claim 1, it is characterized in that: described data collector comprises controller and the first coupled pressure transducer, the second pressure transducer, the 3rd pressure transducer, the first elasticity modulus LVDT and the second elasticity modulus LVDT, described the first pressure transducer is loading between piston and seaming chuck, described the second pressure transducer is between left pressure head and the first ball-screw cylinder, described the 3rd pressure transducer is between right pressure head and the second 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.
5. rock structural face double direction shear test unit according to claim 1, 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 |
|---|---|---|---|
| CN201420163643.3U CN203758856U (en) | 2014-04-05 | 2014-04-05 | Rock structural plane two-way shearing testing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420163643.3U CN203758856U (en) | 2014-04-05 | 2014-04-05 | Rock structural plane two-way shearing testing device |
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| CN203758856U true CN203758856U (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420163643.3U Expired - Fee Related CN203758856U (en) | 2014-04-05 | 2014-04-05 | Rock structural plane two-way shearing testing device |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105751390A (en) * | 2016-03-24 | 2016-07-13 | 中国科学院武汉岩土力学研究所 | Cutting device and geomaterial direct shear apparatus |
| CN107607407A (en) * | 2017-10-25 | 2018-01-19 | 北京富力通达科技有限公司 | The pressure-shear test machine of Plumb load and horizontal moving guide rail |
| CN108982250A (en) * | 2018-08-10 | 2018-12-11 | 重庆大学 | A kind of device and test method for simulating jacking pipe joints and rock matter country rock shearing friction |
| CN109507023A (en) * | 2018-10-16 | 2019-03-22 | 浙江科技学院 | It is a kind of containing weak intercalated layer and with a variety of lateral confinement constraint types integral structure surface model production method |
| CN113281194A (en) * | 2021-05-21 | 2021-08-20 | 东北大学 | Shear box device suitable for rock full stress space is loaded |
| CN114414403A (en) * | 2022-01-26 | 2022-04-29 | 中国矿业大学 | Experimental device and method for realizing rock shearing under mining stress gradient |
| CN116086979A (en) * | 2023-03-07 | 2023-05-09 | 西南交通大学 | Sliding plate type fault multi-angle stick-slip simulation device and test method |
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2014
- 2014-04-05 CN CN201420163643.3U patent/CN203758856U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105751390A (en) * | 2016-03-24 | 2016-07-13 | 中国科学院武汉岩土力学研究所 | Cutting device and geomaterial direct shear apparatus |
| CN107607407A (en) * | 2017-10-25 | 2018-01-19 | 北京富力通达科技有限公司 | The pressure-shear test machine of Plumb load and horizontal moving guide rail |
| CN108982250A (en) * | 2018-08-10 | 2018-12-11 | 重庆大学 | A kind of device and test method for simulating jacking pipe joints and rock matter country rock shearing friction |
| CN108982250B (en) * | 2018-08-10 | 2020-11-13 | 重庆大学 | Device for simulating shearing friction between pipe joints of jacking pipes and rock surrounding rocks and test method |
| CN109507023A (en) * | 2018-10-16 | 2019-03-22 | 浙江科技学院 | It is a kind of containing weak intercalated layer and with a variety of lateral confinement constraint types integral structure surface model production method |
| CN109507023B (en) * | 2018-10-16 | 2021-09-17 | 浙江科技学院 | Method for manufacturing integrated structural surface sample with multiple lateral confinement constraint forms |
| CN113281194A (en) * | 2021-05-21 | 2021-08-20 | 东北大学 | Shear box device suitable for rock full stress space is loaded |
| CN114414403A (en) * | 2022-01-26 | 2022-04-29 | 中国矿业大学 | Experimental device and method for realizing rock shearing under mining stress gradient |
| CN114414403B (en) * | 2022-01-26 | 2023-11-28 | 中国矿业大学 | Experimental device and method for realizing rock shearing under mining stress gradient |
| CN116086979A (en) * | 2023-03-07 | 2023-05-09 | 西南交通大学 | Sliding plate type fault multi-angle stick-slip simulation device and test method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| 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 |