CN204556385U - Rock Under Uniaxial Compression compression test crack propagation process observation device - Google Patents
Rock Under Uniaxial Compression compression test crack propagation process observation device Download PDFInfo
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- CN204556385U CN204556385U CN201520291270.2U CN201520291270U CN204556385U CN 204556385 U CN204556385 U CN 204556385U CN 201520291270 U CN201520291270 U CN 201520291270U CN 204556385 U CN204556385 U CN 204556385U
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Abstract
The utility model discloses a kind of Rock Under Uniaxial Compression compression test crack propagation process observation device, it is made up of two high-definition cameras and a base, each installation high-definition camera on the two side of base, the rock sample assembling extensometer is placed at the base plate center of base.This device can clearly catch by high-definition camera the overall process that when record loads, rock fracture is destroyed at a distance, prevents rock burst from hurting sb.'s feelings, has higher security; Meanwhile, compensate for rock test rig and can only extract stress, strain, the isoparametric shortcoming of displacement when fissure rock uniaxial compression test.
Description
Technical field
The utility model relates to a kind of for containing surface and through fissure rock test specimen uniaxial compression test crack propagation process observation device.
Background technology
Crack rock is a kind of heterogeneous body, anisotropy and discrete complex structure body, its formed and exist the whole period of history in, owing to standing various complexity and unbalanced geologic function, form the weak structure faces such as a large amount of slipping plane, crackle, joint, interlayer and tomography, and tax exists in certain geologic media.Large quantity research shows, is all generally expanded by the discontinuity surface of rock mass inside to produce caused by through glide plane containing destruction that is continuous or Among Intermittent Joints crack rock.Grasp the mechanical characteristic of crack rock and the expansion in crack, through rule controls to have great importance to the stability of Practical Project.
The architectural feature of comprehensive rock mass, Environmental effect and engineering mechanics model thereof, simulated the distortion of rock mass, destructive process by shop experiment, is to be used for studying the conventional and effective method of the one of Jointed Rock Masses failure mechanism at present.In research in the past, for the ease of observing the expansion mechanism in crack, Many researchers adopts the analog material of the clear homogeneous such as resin, glass characteristic to make three-dimensional fracture sample.But because rock interior is that heterogeneous body is anisotropic, the overlap joint of three-dimensional fracture, expansion mechanism and pattern differ larger with homogeneous material; Further, the manufacture craft more complicated of above-mentioned transparent analog material, some resinous material needs just can show good brittle fracture feature under cryogenic.In order to observe the propagation law in true rock sample crack, many scholars attempt the expansion utilizing CT technology, Infrared Thermography Technology or acoustic emission to carry out observation and analysis internal tiny crack, and obtain a lot of important conclusion.But costly, general laboratory is difficult to possess this condition to the instrument that this few class technology uses.If the through process only emphatically in observation experiment loading procedure between the propagation law in crack and crack, around rock test rig extensometer, add high-definition camera namely can observe desirable test findings, not yet find and the matching used high-definition camera observation device of rock test rig extensometer at present.
Utility model content
The utility model is for fissure rock uniaxial compression test, there is provided a kind of for observing the high definition camera device of surface and through crack propagation destructive process in uniaxial load loading procedure, this apparatus structure is simple, simple operation, manufacturing cost are lower, the overall process that when record loads, rock fracture is destroyed can be clearly caught at a distance by high-definition camera, prevent rock burst from hurting sb.'s feelings, there is higher security; Meanwhile, compensate for rock test rig and can only extract stress, strain, the isoparametric shortcoming of displacement when fissure rock uniaxial compression test.
Being configured to of the utility model Rock Under Uniaxial Compression compression test crack propagation process observation device: be made up of two high-definition cameras and a base, it is characterized in that, each installation high-definition camera on described base bilateral wall, the rock sample assembling extensometer is placed at the base plate center of base, described high-definition camera is equipped with a connection bracket and is used for connecting base.
Described connection bracket is inverted U-shaped, is 10mm with width, and thickness is that the sheet steel bending of 2mm forms, the center of upper closed end drills through a bolt hole, to connect high-definition camera, thin slice openend position, both sides respectively drills through a bolt hole, to connect base.
Described base is load with rock test rig circle the rectangle steel tank connect in cushion block, the circular hole adapted with rock sample cushion block size is reserved at center, the circular hole degree of depth is the half of steel tank base plate, baseplate underside center drills through dowel hole, base and bottom circle load between cushion block inserts register pin, its objective is to the rock sample assembling extensometer is placed on the center loading cushion block, rock sample eccentric compression when preventing from loading; Base bilateral wall respectively drills through a vertical strip bolt hole, its objective is the height that can regulate high-definition camera, make it just to the surface on rock sample or through crack.
The method of operating of the utility model Rock Under Uniaxial Compression compression test crack propagation process observation device is: during installation, inserts register pin and be placed on testing machine to load on cushion block after being connected to by the high-definition camera with connection bracket on base; Then, the fissure rock test specimen assembling extensometer is put into the circular hole on base, then regulate the height of high-definition camera to optimum position; With data line, high-definition camera is connected on computers, recorded a video by corresponding software control.
The utility model Rock Under Uniaxial Compression compression test crack propagation process observation device has the following advantages:
1, this device can clearly catch by high-definition camera the overall process that when record loads, rock fracture is destroyed at a distance, prevents rock burst from hurting sb.'s feelings, has higher security.
2, this device pedestal two side respectively there is a bar shaped bolt hole, connection bracket can be moved up and down, make high-definition camera just to the crack on rock sample, obtain video image more clearly.
3, this device is provided with two high-definition cameras, both can observe the propagation law in single external crack or through crack, also can observe the through process of rock bridge between two crack, have higher dirigibility.
4, there is a circular hole adapted with rock sample cushion block size at the base center of this device, and convenient center rock sample being placed on loading cushion block, effectively can prevent rock sample eccentric compression in loading procedure.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model Rock Under Uniaxial Compression compression test crack propagation process observation device.
Marginal data: 1-high-definition camera; 2-connection bracket; 3-fissure rock test specimen; 4-base; 5-extensometer.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described.
Being configured to of a kind of Rock Under Uniaxial Compression compression test crack propagation process observation device as shown in Figure 1: be made up of two high-definition cameras 1 and a base 4, it is characterized in that, each installation high-definition camera 1 on the two side of described base 4, the rock sample assembling extensometer is placed at the base plate center of base 4, described high-definition camera 1 is equipped with a connection bracket 2 and is used for connecting base.
Described connection bracket 2, in inverted U-shaped, is 10mm with width, and thickness is that the sheet steel bending of 2mm forms, the center of upper closed end drills through a bolt hole, to connect high-definition camera, thin slice openend position, both sides respectively drills through a bolt hole, to connect base 4.
Described base 4 is load with rock test rig circle the rectangle steel tank connect in cushion block, the circular hole adapted with rock sample cushion block size is reserved at center, the circular hole degree of depth is the half of steel tank base plate, baseplate underside center drills through dowel hole, base and bottom circle load between cushion block inserts register pin, its objective is to the rock sample assembling extensometer is placed on the center loading cushion block, rock sample eccentric compression when preventing from loading; The two side of base 4 respectively drills through a vertical strip bolt hole, its objective is the height that can regulate high-definition camera 1, make it just to the through or external crack on rock sample.
The method of operating of the utility model Rock Under Uniaxial Compression compression test crack propagation process observation device is: during installation, inserts register pin and be placed on testing machine to load on cushion block after being connected to by the high-definition camera 1 with connection bracket 2 on base 4; Then, the fissure rock test specimen assembling extensometer is put into the circular hole on base 4, then regulate the height of high-definition camera 1 to optimum position; With data line, high-definition camera 1 is connected on computers, recorded a video by corresponding software control.
Claims (1)
1. a Rock Under Uniaxial Compression compression test crack propagation process observation device, it is made up of two high-definition cameras and a base, it is characterized in that, each installation high-definition camera on described base bilateral wall, the rock sample assembling extensometer is placed at the base plate center of base, described high-definition camera is equipped with a connection bracket and is used for connecting base.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520291270.2U CN204556385U (en) | 2015-05-07 | 2015-05-07 | Rock Under Uniaxial Compression compression test crack propagation process observation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520291270.2U CN204556385U (en) | 2015-05-07 | 2015-05-07 | Rock Under Uniaxial Compression compression test crack propagation process observation device |
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| Publication Number | Publication Date |
|---|---|
| CN204556385U true CN204556385U (en) | 2015-08-12 |
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| CN201520291270.2U Expired - Fee Related CN204556385U (en) | 2015-05-07 | 2015-05-07 | Rock Under Uniaxial Compression compression test crack propagation process observation device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442123A (en) * | 2016-09-19 | 2017-02-22 | 中国矿业大学(北京) | Omnidirectional dynamic observation method for uniaxial compression crack propagation in coal and rock mass |
| CN106525590A (en) * | 2016-12-14 | 2017-03-22 | 武汉科技大学 | Static deformation experiment device for testing low-strength test piece |
| CN106769420A (en) * | 2017-02-24 | 2017-05-31 | 南华大学 | A kind of axial strain test device when being loaded for non-standard test specimen |
| CN107179241A (en) * | 2017-06-14 | 2017-09-19 | 中国石油大学(北京) | A kind of subcritical crack extension visual experimental apparatus of rock |
| CN108398321A (en) * | 2018-01-26 | 2018-08-14 | 河北工业大学 | The three-dimensional rectangular crack of observation is destroyed and the experimental method and experimental provision of strain field |
| CN109459318A (en) * | 2018-12-19 | 2019-03-12 | 北京科技大学 | A kind of active and passive real-time sonic test approved sample device and method of rock failure mechanism of rock process |
-
2015
- 2015-05-07 CN CN201520291270.2U patent/CN204556385U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106442123A (en) * | 2016-09-19 | 2017-02-22 | 中国矿业大学(北京) | Omnidirectional dynamic observation method for uniaxial compression crack propagation in coal and rock mass |
| CN106525590A (en) * | 2016-12-14 | 2017-03-22 | 武汉科技大学 | Static deformation experiment device for testing low-strength test piece |
| CN106769420A (en) * | 2017-02-24 | 2017-05-31 | 南华大学 | A kind of axial strain test device when being loaded for non-standard test specimen |
| CN107179241A (en) * | 2017-06-14 | 2017-09-19 | 中国石油大学(北京) | A kind of subcritical crack extension visual experimental apparatus of rock |
| CN107179241B (en) * | 2017-06-14 | 2018-06-19 | 中国石油大学(北京) | A kind of subcritical crack extension visual experimental apparatus of rock |
| CN108398321A (en) * | 2018-01-26 | 2018-08-14 | 河北工业大学 | The three-dimensional rectangular crack of observation is destroyed and the experimental method and experimental provision of strain field |
| CN109459318A (en) * | 2018-12-19 | 2019-03-12 | 北京科技大学 | A kind of active and passive real-time sonic test approved sample device and method of rock failure mechanism of rock process |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20150812 Termination date: 20160507 |
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| CF01 | Termination of patent right due to non-payment of annual fee |