CN104534963A - Friction angle measuring device and method for series of multi-scale square rock structural surfaces - Google Patents
Friction angle measuring device and method for series of multi-scale square rock structural surfaces Download PDFInfo
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- CN104534963A CN104534963A CN201410527302.4A CN201410527302A CN104534963A CN 104534963 A CN104534963 A CN 104534963A CN 201410527302 A CN201410527302 A CN 201410527302A CN 104534963 A CN104534963 A CN 104534963A
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Abstract
A friction angle measuring device for a series of multi-scale square rock structural surfaces comprises a frame, a test platform and a lower disk fixing assembly of the square rock structural surface. The test platform comprises a turn table, one side of the turn table is fixedly mounted on a rotating shaft, the rotating shaft sleeves the frame in a rotatable manner, the end portion of the rotating shaft is linked to a rotating handle, the upper surface of the turn table is provided with a sampling location line and a central positioning point, the positioning point is the central point of the square rock structural surface, two rows of bolt holes are distributed along each diagonal of the square rock structural surface by taking the positioning point as an original point of a planar coordinate system, and bolts of each row are arranged at equal interval. The lower disk fixing assembly of the square rock structural surface comprises four right-angled fixing plates, the turn table is provided with a vertical angle scale and a plumb line, and the plumb line is suspended at the central position of the vertical angle scale. A friction angle measuring method for a series of multi-scale square rock structural surfaces is also provided. According to the measuring method and device, the lower disk structural surface can be fixed, control is easy and the precision of test result is high.
Description
Technical field
The present invention relates to the multiple dimensioned square rock structural face friction angle measurement device of series, be applicable to the measurement of square protolith or model structure face angle of friction, the range of size of measurable structural fece sample is 100mm × 100mm-1000mm × 1000mm.The invention belongs to field of engineering technology.
Background technology
The unstable failure of engineering rock mass is derived from structural plane, from the structural plane failure theory of Barton, the roughness coefficient (JRC) of structural plane is the important parameter affecting structure face mechanic characteristic, and roughness coefficient (JRC) can carry out conversion acquisition by the rock structural face angle of friction under the effect of deadweight normal stress.And the rock structural face angle of friction under the effect of deadweight normal stress obtains usually through inclining experiment or direct shear test, but direct shear test is the mapping relations adopting direct shear apparatus to set up normal stress and shear stress, rock structural face angle of friction is obtained again by function transformational relation, therefore, adopt direct shear apparatus directly can not obtain the angle of friction of structural plane, so that cause the structural plane angle of friction precision recorded low, and operating process is complicated, test period is long, is difficult to meet the requirement accurately obtaining rock structural face angle of friction in engineering fast.
Inclining experiment directly can obtain structural plane angle of friction under Gravitative Loads, but existing friction angle analyzer can not be used for the measurement of structural plane angle of friction, and have the following disadvantages when measuring square rock structural face angle of friction: (1) can not the lower wall in effective fixed sturcture face, slide in lower disc face in rotation process of easily causing on test platform, cause the precision of test result low, can not engineering demands.Because structural fece sample is by the upper lower burrs (consistency of thickness of usual upper lower burrs, and shape is square) composition, structural fece sample will rotate in test process together with test platform, when arriving the peak value angle of friction of structural plane, can there is the changing of the relative positions in rock structural face sample upper lower burrs, the platform angle of rotation at this moment recorded is the angle of friction required by rock structural face, therefore, in process of the test, require that the lower wall of rock structural face is fixed on test platform, and want easy accessibility.(2) test platform placing rock structural face sample easily overturns in process of the test, wayward.The lifting gear of existing angle of friction tester is not reliably connected with test platform, when reaching rock structural face peak value angle of friction, lifting gear and test platform can be thrown off, cause test platform to overturn, cause test failure, rock structural face peak value angle of friction cannot be obtained.(3) can not test in same testing apparatus multiple serial yardstick (100mm × 100mm, 200mm × 200mm ..., 1000mm × 1000mm) angle of friction of rock structural face sample.(4) complicated operation, security is low.
Summary of the invention
The lower wall had in mensuration rock structural face angle of friction to overcome existing friction angle analyzer can not be fixed, easily overturn, the deficiency of the aspects such as multiple serial mesostructure face can not be tested, the invention provides the multiple dimensioned square rock structural face friction angle measurement device of a kind of series and method, this device can fix lower disc face, easy to control and the precision of test result is high.
The technical solution adopted for the present invention to solve the technical problems is:
The multiple dimensioned square rock structural face friction angle measurement device of a kind of series, comprise frame, test platform and square rock structural face lower wall fixation kit, described test platform comprises turntable, the fixed installation of described turntable side on the rotating shaft, described rotation axis is sleeved in frame rotationally, the end of described rotation axis and swing handle link, described turntable upper surface is provided with sample position line and centre spot, described anchor point is the central point of square rock structural face, with described anchor point for plane coordinate system initial point, every bar diagonal line along square rock structural face distributes two row's bolts hole, arrange at equal intervals between the adjacent bolt hole of often arranging bolt hole, square rock structural face lower wall fixation kit comprises 4 square fixed heads, described square fixed head is positioned on four angles of described square rock structural face, the below of square fixed head is fixedly connected with described bolt hole by bottom bolts, and the both sides of square fixed head are all fixedly connected with by the side of side bolt with described square rock structural face, described turntable is installed vertical angle scale and pedal line, the center of described vertical angle scale hangs described pedal line.
Further, the end of described rotation axis is connected with described vertical rolling disc, and described vertical rolling disc installs described swing handle.
Further again, described test platform also comprises buffer table and cushion pad, and the side of described rotation axis is described turntable, and the opposite side of described rotation axis is buffer table, and described buffer table is fixedly mounted in frame, installs cushion pad in described buffer table.
One circle of described vertical angle scale is provided with index dial.
The multiple dimensioned square rock structural face angle of friction measuring method of a kind of series, described measuring method comprises the following steps:
A () selects the rock structural face sample wanting test size;
B () regulates swing handle to make turntable lie against on operator's console;
C () square rock structural face comprises lower disc face and upper dish structural plane, lower disc face is positioned on turntable, requires that the center in lower disc face overlaps with the anchor point of turntable;
D () is connected lower disc face by the bottom bolts of four square fixed heads with turntable; The side bolt of square fixed head is connected, until bolt end and lower disc interview sample close contact through threaded bolt hole;
E () is positioned over upper dish structural plane on lower disc face by boom hoisting, and require that upper lower burrs structural plane coincide, and utilize the line of ink marker (adopt mark table upper lower burrs sample outer surface draw one with the perpendicular line of structural plane) record the relative position of upper lower burrs structural plane;
The initial indication angle of pedal line on (f) record vertical angle scale;
G () regulates turntable to rotate with certain speed by swing handle, the situation of movement of structural plane is coiled on observing in turn disc process, when the line of ink marker of upper lower burrs structural plane occurs that slippage appears in dislocation or upper dish structural plane, again record the indication angle of pedal line on vertical angle scale;
H () is returned to test reference position by swing handle turntable after having recorded;
I angle difference that () step (g) and step (f) record is square rock structural face angle of friction.
The present invention gives multiple dimensioned square rock structural face friction angle measurement device, 100mm × 100mm, 200mm × 200mm, 300mm × 300mm, 400mm × 400mm, 500mm × 500mm, 600mm × 600mm, 700mm × 700mm, 800mm × 800mm, 900mm × 900mm, the protolith of 1000mm × 1000mm or structural plane model sample can be respectively by measurement size.
Beneficial effect of the present invention is mainly manifested in: (1) is easy to operate, cost is low, security is high; (2) range scale large (100mm × 100mm-1000mm × 1000mm) of test structure interview sample; (3) structural plane lower wall is easily fixed, easy accessibility; (4) in test process, test platform not easily overturns and vibrates, and test result precision is high.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the multiple dimensioned square rock structural face friction angle measurement device of series.
Fig. 2 is the vertical view of Fig. 1.
Fig. 3 is the schematic diagram of square fixed head.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
Embodiment 1
With reference to Fig. 1 ~ Fig. 3, the multiple dimensioned square rock structural face friction angle measurement device of a kind of series, comprise frame, test platform and square rock structural face lower wall fixation kit 7, described test platform comprises turntable 2, described turntable 2 side is fixedly mounted on rotation axis 4, described rotation axis 4 is sleeved in frame rotationally, end and the swing handle 5 of described rotation axis 4 link, described turntable 2 upper surface is provided with sample position line and centre spot, described anchor point is the central point of square rock structural face, with described anchor point for plane coordinate system initial point, every bar diagonal line along square rock structural face distributes two row's bolts hole 6, arrange at equal intervals between the adjacent bolt hole of often arranging bolt hole, square rock structural face lower wall fixation kit 7 comprises 4 square fixed heads 13, described square fixed head 13 is positioned on four angles of described square rock structural face, the below of square fixed head 13 is fixedly connected with described bolt hole 6 by bottom bolts 11, and the both sides of square fixed head 13 are all fixedly connected with by the side of side bolt 12 with described square rock structural face, described turntable 2 is installed vertical angle scale 8 and pedal line 9,8 centers of described vertical angle scale hang described pedal line 9.
Further, the end of described rotation axis 4 is connected with described vertical rolling disc, and described vertical rolling disc installs described swing handle.
Further again, described test platform also comprises buffer table 1 and cushion pad 3, and the side of described rotation axis 4 is described turntable 2, and the opposite side of described rotation axis 4 is buffer table 1, and described buffer table 1 is fixedly mounted in frame, installs cushion pad 3 in described buffer table 1.
One circle of described vertical angle scale 8 is provided with index dial 10.
Embodiment 2
With reference to a kind of multiple dimensioned square rock structural face angle of friction measuring method of Fig. 1 ~ Fig. 3, comprise the following steps:
A () selects the rock structural face sample 15 wanting test size;
B () regulates swing handle 5 to make turntable 2 lie against on operator's console;
C () utilizes sample position line 14 that the lower disc face of square rock structural face is positioned on turntable 2, require that the center in lower disc face overlaps with the anchor point of turntable 2;
D () is connected lower disc face by the bottom bolts 11 of four square fixed heads 13 with turntable 2; The side bolt 12 of square fixed head 13 is connected, until bolt end and lower disc interview sample close contact through threaded bolt hole;
E () is positioned over lower disc face upper dish structural plane by boom hoisting, and require that upper lower burrs structural plane fits like a glove, and utilize the line of ink marker (adopt mark table upper lower burrs sample lateral surface draw one with the perpendicular line of structural plane) record the relative position of upper lower burrs;
The initial indication angle of pedal line 9 on (f) record vertical angle scale 8;
G () is rotated turntable by swing handle 5 with certain speed, the situation of movement of structural plane is coiled on observing in turn disc process, when the line of ink marker of upper lower burrs structural plane occurs that slippage appears in dislocation or upper dish structural plane, again record pedal line indication angle on vertical angle scale;
H () is returned to test initial position by swing handle 5 turntable 2 after having recorded again;
I angle difference that () step (g) and step (f) record is square rock structural face angle of friction.
The present embodiment is of a size of the angle of friction of the square rock structural face of 600mm × 600mm to obtain.Described measuring method comprises the following steps:
A () is selected to test the rock structural face sample 15 being of a size of 600mm × 600mm.
B () is lain against turntable 2 on operator's console by vertical rolling disc and handle 5.
C () utilizes sample position line 14 that lower disc face is positioned on turntable 2, require that the center in lower disc face overlaps with the centre spot of turntable.
D () is reliably connected lower disc face with turntable 2 by the bolt of four square fixed heads 7.Because structural fece sample is of a size of 600mm × 600mm, therefore the 6th circle bolt hole 6 (totally 4 on the corresponding turntable 2 of fixture bottom bolts can be determined, the 6th circle bolt hole from the outside number of turntable anchor point), connected by the bolt hole 6 on the bottom bolts 11 of reinforcing member and turntable.The side bolt 12 of reinforcing member is connected through threaded bolt hole, until bolt end and lower disc interview sample close contact, and suitably tightens.
E () is positioned over upper dish structural plane on lower disc face by boom hoisting, and require that upper lower burrs structural plane fits like a glove, and utilizes the relative position of line of ink marker record upper lower burrs structural plane.
The initial indication angle of pedal line 9 on (f) recording angular dish 8.
G () rotates vertical rolling disc and handle 5 rotates turntable with certain speed, the situation of movement of structural plane is coiled on observing in turn disc process, when the line of ink marker of upper lower burrs structural plane occurs that slippage appears in dislocation or upper dish structural plane, the indication angle of pedal line 9 on recording angular dish 8 again.
H () is rolled back turntable 2 on operator's console by vertical rolling disc and handle 5 after having recorded again.
I angle difference that () step (g) and step (f) record is the square rock structural face angle of friction being of a size of 600mm × 600mm.
In order to obtain the rock structural face roughness coefficient of certain array of sizes, need the angle of friction of test series structural plane size (100mm × 100mm, 200mm × 200mm, 300mm × 300mm, 400mm × 400mm, 500mm × 500mm, 600mm × 600mm, 700mm × 700mm, 800mm × 800mm, 900mm × 900mm, 1000mm × 1000mm).
Claims (5)
1. the multiple dimensioned square rock structural face friction angle measurement device of series, it is characterized in that: comprise frame, test platform and square rock structural face lower wall fixation kit, described test platform comprises turntable, the fixed installation of described turntable side on the rotating shaft, described rotation axis is sleeved in frame rotationally, the end of described rotation axis and swing handle link, described turntable upper surface is provided with sample position line and centre spot, described anchor point is the central point of square rock structural face, with described anchor point for plane coordinate system initial point, every bar diagonal line along square rock structural face distributes two row's bolts hole, arrange at equal intervals between the adjacent bolt hole of often arranging bolt hole, square rock structural face lower wall fixation kit comprises 4 square fixed heads, described square fixed head is positioned on four angles of described square rock structural face, the below of square fixed head is fixedly connected with described bolt hole by bottom bolts, and the both sides of square fixed head are all fixedly connected with by the side of side bolt with described square rock structural face, described turntable is installed vertical angle scale and pedal line, the center of described vertical angle scale hangs described pedal line.
2. the multiple dimensioned square rock structural face friction angle measurement device of series as claimed in claim 1, is characterized in that: the end of described rotation axis is connected with described vertical rolling disc, and described vertical rolling disc installs described swing handle.
3. the multiple dimensioned square rock structural face friction angle measurement device of series as claimed in claim 1 or 2, it is characterized in that: described test platform also comprises buffer table and cushion pad, the side of described rotation axis is described turntable, the opposite side of described rotation axis is buffer table, described buffer table is fixedly mounted in frame, installs cushion pad in described buffer table.
4. the multiple dimensioned square rock structural face friction angle measurement device of series as claimed in claim 1 or 2, is characterized in that: a circle of described vertical angle scale is provided with index dial.
5., by the measuring method that the multiple dimensioned square rock structural face friction angle measurement device of series as claimed in claim 1 realizes, it is characterized in that: described measuring method comprises the following steps:
A () selects the rock structural face sample wanting test size;
B () regulates swing handle to make turntable lie against on operator's console;
C () square rock structural face comprises lower disc face and upper dish structural plane, lower disc face is positioned on turntable, requires that the center in lower disc face overlaps with the anchor point of turntable;
D () is connected lower disc face by the bottom bolts of four square fixed heads with turntable; The side bolt of square fixed head is connected, until bolt end and lower disc interview sample close contact through threaded bolt hole;
E () is positioned over upper dish structural plane on lower disc face by boom hoisting, and require that upper lower burrs structural plane coincide, and utilizes the relative position of line of ink marker record upper lower burrs structural plane;
The initial indication angle of pedal line on (f) record vertical angle scale;
G () regulates turntable to rotate with certain speed by swing handle, the situation of movement of structural plane is coiled on observing in turn disc process, when the line of ink marker of upper lower burrs structural plane occurs that slippage appears in dislocation or upper dish structural plane, again record the indication angle of pedal line on vertical angle scale;
H () is returned to test reference position by swing handle turntable after having recorded;
I angle difference that () step (g) and step (f) record is square rock structural face angle of friction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410527302.4A CN104534963B (en) | 2014-10-08 | 2014-10-08 | A kind of serial multiple dimensioned square rock structural face friction angle measurement device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410527302.4A CN104534963B (en) | 2014-10-08 | 2014-10-08 | A kind of serial multiple dimensioned square rock structural face friction angle measurement device and method |
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| CN104534963B CN104534963B (en) | 2018-01-16 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066849A (en) * | 2015-07-16 | 2015-11-18 | 中国电建集团成都勘测设计研究院有限公司 | Measuring device for friction angle of rock structural planes |
| CN110164986A (en) * | 2019-05-23 | 2019-08-23 | 晶澳（扬州）太阳能科技有限公司 | The preparation method of cell piece and its cell piece obtained |
| CN110208052A (en) * | 2018-08-07 | 2019-09-06 | 东北大学 | A kind of transverse isotropy true triaxial rock sample production method |
-
2014
- 2014-10-08 CN CN201410527302.4A patent/CN104534963B/en active Active
Non-Patent Citations (1)
| Title |
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| 罗战友等: "岩石结构面峰值摩擦角应力效应试验研究", 《岩石力学与工程学报》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105066849A (en) * | 2015-07-16 | 2015-11-18 | 中国电建集团成都勘测设计研究院有限公司 | Measuring device for friction angle of rock structural planes |
| CN105066849B (en) * | 2015-07-16 | 2017-12-01 | 中国电建集团成都勘测设计研究院有限公司 | Rock mass discontinuity friction angle measurement device |
| CN110208052A (en) * | 2018-08-07 | 2019-09-06 | 东北大学 | A kind of transverse isotropy true triaxial rock sample production method |
| CN110208052B (en) * | 2018-08-07 | 2021-04-02 | 东北大学 | Transverse isotropic true triaxial rock sample manufacturing method |
| CN110164986A (en) * | 2019-05-23 | 2019-08-23 | 晶澳（扬州）太阳能科技有限公司 | The preparation method of cell piece and its cell piece obtained |
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| CN104534963B (en) | 2018-01-16 |
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Inventor after: Du Shigui Inventor after: Luo Zhanyou Inventor after: Huang Man Inventor after: Lv Yuanjun Inventor after: Wu Faquan Inventor after: Xia Caichu Inventor after: Yong Rui Inventor before: Luo Zhanyou Inventor before: Du Shigui Inventor before: Huang Man Inventor before: Lv Yuanjun Inventor before: Zhang Xiaoying Inventor before: Yong Rui |
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