CN113109174A - Riparian rock structural plane shear strength testing device for simulating water flow extrusion - Google Patents
Riparian rock structural plane shear strength testing device for simulating water flow extrusion Download PDFInfo
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- CN113109174A CN113109174A CN202110224332.8A CN202110224332A CN113109174A CN 113109174 A CN113109174 A CN 113109174A CN 202110224332 A CN202110224332 A CN 202110224332A CN 113109174 A CN113109174 A CN 113109174A
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- 239000011435 rock Substances 0.000 title claims abstract description 95
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 title claims abstract description 25
- 238000001125 extrusion Methods 0.000 title claims abstract description 17
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 14
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 14
- 241001330002 Bambuseae Species 0.000 claims abstract description 14
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 14
- 239000011425 bamboo Substances 0.000 claims abstract description 14
- 238000004088 simulation Methods 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 11
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000003466 welding Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010008 shearing Methods 0.000 abstract description 3
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- 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
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- 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
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- 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
- G01N2203/0025—Shearing
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- 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
- G01N2203/0058—Kind of property studied
- G01N2203/006—Crack, flaws, fracture or rupture
- G01N2203/0067—Fracture or rupture
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- 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
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
- G01N2203/0242—With circulation of a fluid
Abstract
The invention provides a riparian rock structural plane shear strength testing device simulating water flow extrusion, and relates to the field of rock strength testing equipment. This riparian rock structure face shear strength testing arrangement of simulation rivers extrusion makes the screw rod rotation push out the cylinder from the location section of thick bamboo through motor, chain, gear wheel, pinion cooperation. The purpose of squeezing the rock is achieved. Through immersing the rock in water, motor and electric push rod drive whole cylinder body and rock to make the water in the cylinder body strike the rock, realize simulating the scene that river strikes the rock. Thereby reach the effect of carrying out the test to the shearing strength of river bank rock.
Description
Technical Field
The invention relates to the technical field of rock strength testing equipment, in particular to a riparian rock structural plane shear strength testing device for simulating water flow extrusion.
Background
The geometric form of the natural structural surface often has direction dependence, and a large number of researches show that the shear strength characteristic of the structural surface is influenced by the surface geometric form, the shear strength of the structural surface often presents certain anisotropy, and the instability damage of the engineering rock mass presents certain directionality. For example, slope instability tends to slip in the direction of weakest structural shear.
Based on the above, the strength of the river bank rock needs to be recorded in advance in the river-following construction process, and the turbulent river beats on the rock for a long time, so that the rock is impacted and eroded by the water body, and high permeability difference often exists in the rock joint crack. The stability of the rock mass is susceptible. Therefore, the potential safety hazard of landslide caused by river bank rock collapse exists. If the detection is not carried out, the construction is carried out, so that accidents are easy to happen, and corresponding equipment is needed to detect the river bank rocks.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a test device for simulating the shear strength of a river bank rock structure surface extruded by water flow, which solves the problems that the river bank rock in the background technology is influenced by water impact and erosion, the stability of rock mass is poor, and accidents are easy to happen when the river bank rock is constructed without a rock mass strength test.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a simulation rivers extruded river bank rock structure face shear strength testing arrangement, includes the cylinder body, the cylinder body lower extreme is spherical, and the cylinder body top is equipped with the top cap, and the internal thread has been seted up to the cylinder body upper end, and the external screw thread has been seted up to the top cap bottom, cylinder body and top cap threaded connection, the top cap bottom has a plurality of splint around central axis wait the angular welding, and the splint lower extreme extends to in the cylinder body, splint lower extreme fixed mounting has a cylinder liner, and cylinder liner one end is towards the central axis and is equipped with the rock screens ware, and the rock is located between a plurality of cylinder liners and is blocked by the rock screens ware, it has water to annotate in.
The top cap top is equipped with drive assembly, and drive assembly controls a plurality of rock screens ware and is close to each other and extrudees the rock, and top cap inner wall bottom fixed mounting has the camera.
Preferably, the inside cavity of a location section of thick bamboo, the pin joint has the screw rod in the section of thick bamboo of location, is equipped with the cylinder in the section of thick bamboo of location, and in screw rod one end stretched into the cylinder, cylinder and screw rod threaded connection, a location section of thick bamboo, screw rod, cylinder were in same axis, the spout has been seted up respectively from top to bottom in the section of thick bamboo inner wall of location, and the outer surface welding of cylinder has the slider with spout looks adaptation, and the screw rod body links to each.
Preferably, drive assembly includes gear wheel, chain, motor, pinion, the gear wheel welding is at the screw rod body, and the motor is inlayed at the top cap top, and motor drive shaft and pinion are connected, and inside a location section of thick bamboo extended to a location section of thick bamboo was passed to chain one end, gear wheel and pinion pass through chain drive and are connected.
Preferably, a tension detector is fixedly mounted at the top of the top cover, and a string is connected between the detection end of the tension detector and the motor transmission shaft.
Preferably, the rock screens ware comprises fixture block, joint piece, spacer, and the fixture block is arranged around axis equidistance, fixture block and cylinder welding, joint piece and fixture block one-to-one, joint piece have the iron sheet that has toughness to make, and joint piece one end is passed fixture block and rock contact bending, and the joint piece other end has the arch and blocks with the fixture block, and the spacer is located between a plurality of joint pieces, and the spacer is fixed with the cylinder and bonds.
Preferably, the bottom of the cylinder body is provided with a base, the inner side of the base is pivoted with a plurality of balls, and the balls are in contact with the surface of the bottom of the cylinder body.
Preferably, the cylinder body outside is equipped with the frame, and frame fixed mounting has the motor, and the motor is located directly over the cylinder body, and motor drive shaft is vertical down, and the cover has the rubber circle in the cylinder body outside, and rubber circle one end fixed mounting has the connecting rod, and the top cap direction slope is kept away from to the connecting rod upper end, and motor drive shaft fixed mounting has electric push rod, and electric push rod lower extreme is towards keeping away from the top cap direction slope, electric push rod lower extreme has the connecting rod through screw threaded connection.
(III) advantageous effects
The invention provides a device for testing the shear strength of a riparian rock structural plane by simulating water flow extrusion. The method has the following beneficial effects:
1. this riparian rock structure face shear strength testing arrangement of simulation rivers extrusion makes the screw rod rotation push out the cylinder from the location section of thick bamboo through motor, chain, gear wheel, pinion cooperation. The purpose of squeezing the rock is achieved. Through immersing the rock in water, motor and electric push rod drive whole cylinder body and rock to make the water in the cylinder body strike the rock, realize simulating the scene that river strikes the rock. Thereby reach the effect of carrying out the test to the shearing strength of river bank rock.
Drawings
FIG. 1 is a perspective view of the present invention;
FIG. 2 is a schematic view of the cylinder structure of the present invention;
FIG. 3 is a schematic view of the interior of the cylinder structure of the present invention;
FIG. 4 is a schematic view of a positioning cylinder according to the present invention;
FIG. 5 is a schematic view of the interior of the positioning cylinder structure of the present invention;
FIG. 6 is a partial schematic view of the present invention;
FIG. 7 is a side view of the structure of the present invention;
FIG. 8 is a schematic view of a base structure according to the present invention.
In the figure: the device comprises a cylinder body 1, a base 2, a ball 21, a top cover 3, a tension detector 4, a clamping plate 5, a positioning cylinder 6, a screw 61, a cylinder 62, a sliding chute 63, a sliding block 64, a gearwheel 65, a chain 66, a rock clamping device 7, a clamping block 71, a clamping sheet 72, a cushion block 73, a motor 8, a pinion 81, a string 82, a camera 9, a frame 10, a motor 11, an electric push rod 12, a rubber ring 13, a connecting rod 14 and a singlechip 15.
Detailed Description
The embodiment of the invention provides a river bank rock structural plane shear strength testing device simulating water flow extrusion, which comprises a cylinder body 1, wherein the lower end of the cylinder body 1 is spherical, a top cover 3 is arranged above the cylinder body 1, an internal thread is arranged at the upper end of the cylinder body 1, an external thread is arranged at the bottom of the top cover 3, and the cylinder body 1 is in threaded connection with the top cover 3, as shown in figures 1-8. A plurality of clamping plates 5 are welded at the bottom of the top cover 3 at equal angles around the central axis, the lower ends of the clamping plates 5 extend into the cylinder body 1, and a positioning cylinder 6 is fixedly mounted at the lower end of each clamping plate 5.
One end of the positioning cylinder 6 faces the central axis and is provided with a rock stopper 7, and rocks are positioned among the plurality of positioning cylinders 6 and are stopped by the rock stopper 7.
The cylinder body 1 is filled with water, and the water accounts for two thirds of the whole volume of the cylinder body 1.
The top of the top cover 3 is provided with a driving assembly which controls the plurality of rock clamping devices 7 to be close to each other to extrude rocks, and the bottom of the inner wall of the top cover 3 is fixedly provided with a camera 9. The camera 9 is used for shooting the rock change condition in the cylinder body 1. And the picture is fed back to the tester.
The positioning cylinder 6 is hollow, a screw 61 is pivoted in the positioning cylinder 6, a cylinder 62 is arranged in the positioning cylinder 6, one end of the screw 61 extends into the cylinder 62, and the cylinder 62 is in threaded connection with the screw 61. The positioning cylinder 6, the screw 61 and the cylinder 62 are on the same axis. The upper and lower parts of the inner wall of the positioning cylinder 6 are respectively provided with a sliding groove 63, the outer surface of the cylinder 62 is welded with a sliding block 64 matched with the sliding groove 63, and the rod body of the screw rod 61 is connected with the driving component. During operation, the screw 61 rotates to push out the inner cylinder 62 of the positioning cylinder 6, and the positioning cylinders 6 are close to each other to achieve the purpose of squeezing rocks.
The driving component comprises a large gear 65, a chain 66, a motor 8 and a small gear 81, wherein the large gear 65 is welded on the rod body of the screw 61, the motor 8 is embedded on the top of the top cover 3, and a transmission shaft of the motor 8 is welded with the small gear 81. One end of the chain 66 passes through the positioning cylinder 6 and extends to the inside of the positioning cylinder 6, and the large gear 65 is in transmission connection with the small gear 81 through the chain 66. Since the chain 66 is prior art, the specific type, components, etc. of the chain will not be described in detail.
The top of the top cover 3 is fixedly provided with a tension detector 4, and a string 82 is fixedly bound between the detection end of the tension detector 4 and the transmission shaft of the motor 8. The motor 8 rotates the screw 61 through the small gear 81, the chain 66 and the large gear 65, so that the screw 61 pushes the cylinder 62 to move. At the same time, the motor 8 winds the string 82, and a tension is generated between the string 82 and the tension detector 4.
In the initial state, the cylinder 62 grips the piece of rock, at which point the tension detector 4 measures a value of S1, and then the motor 8 continues to rotate slowly until the piece of rock is damaged by extrusion, at which point the tension detector 4 measures a value of S2. The difference obtained by subtracting S1 from S2 represents the sustainable pressure of the rock.
The rock clamping device 7 is composed of a clamping block 71, clamping pieces 72 and a cushion block 73, wherein the clamping block 71 is arranged at equal angles around an axis, the clamping block 71 is welded with the cylinder 62, the clamping pieces 72 correspond to the clamping block 71 one by one, the clamping pieces 72 are made of flexible iron sheets, and one end of each clamping piece 72 penetrates through the clamping block 71 to be in contact bending with the rock. And the clamping sheet 72 has a tendency of recovery due to toughness, so that the clamping sheet 72 is abutted against the rock block.
The other end of the clamping sheet 72 is provided with a bulge and clamped with the clamping block 71, a cushion block 73 is positioned between the clamping sheets 72, and the cushion block 73 is fixedly adhered with the column 62. The spacer 73 serves to protect the cylinder 62.
The reason why the fixture block 71, the clamping piece 72 and the cushion block 73 are arranged is that the rock block has bulges, edges and corners and the like, and the end surface of the cylinder 62 is smooth and cannot completely and stably fix the rock. Rock pieces are prone to slip. The clamping block 71, the clamping sheet 72 and the cushion block 73 are matched to be clamped with the convex edge of the rock. Thereby preventing the rock from slipping when being squeezed.
The base 2 is placed at the bottom of the cylinder body 1, a plurality of balls 21 are pivoted on the inner side of the base 2, and the balls 21 are in surface contact with the bottom of the cylinder body 1. The cylinder body 1 can shake through the balls 21, and the cylinder body 1 shakes to enable water inside to impact rock blocks, so that a scene that a river impacts on shore rocks is simulated.
Combine attached figure 1, 7, 1 outside of cylinder body is equipped with frame 10, frame 10 fixed mounting has motor 11, motor 11 is located directly over the cylinder body 1, motor 11 transmission shaft is vertical downwards, 1 outside cover of cylinder body has rubber circle 13, 13 one end fixed mounting of rubber circle has connecting rod 14, 3 direction slopes of top cap are kept away from to connecting rod 14 upper end, motor 11 transmission shaft fixed mounting has electric push rod 12, 12 lower extremes of electric push rod are towards keeping away from 3 direction slopes of top cap, 12 lower extremes of electric push rod have connecting rod 14 through screw threaded connection.
The motor 11 rotates and the electric push rod 12 repeatedly extends and retracts, thereby driving the cylinder 1 to shake back and forth.
The top of the top cover 3 is also fixedly provided with a singlechip 15, and the singlechip 15 is used for controlling the motor 8 and the camera 9 to work. And feeds back the signal to the tester. The single chip microcomputer 15 controls the motors 8 individually, so that rock blocks can be extruded only from one side.
Since the single chip microcomputer 15 is a conventional technical means, the specific model, structure and circuit arrangement are the same as those in the prior art, and are not described in detail.
The working principle is as follows: firstly, water is filled in two thirds of the volume of the cylinder body 1, and then rock blocks are placed between the positioning cylinders 6 at the lower end of the clamping plate 4. Then, the motor 8 is driven to rotate, the motor 8 drives the pinion 81 to rotate, the pinion 81 drives the gearwheel 65 to rotate through the chain 66, the gearwheel 65 drives the screw 61 to rotate, the screw 61 pushes the cylinder 62 to move along the sliding groove 63, and the cylinder 62 is pushed out from the positioning barrel 6, so that the cylinder 62 is close to the rock block.
Then, the clamping sheet 72 passes through the clamping block 71, and the clamping sheet 72 is contacted and pressed against the rock block. Thereby fixing the rock mass.
The top cover 3 is then placed over the cylinder 1 and the rock mass is submerged. Continued rotation of the drive motor 8 causes the cylinder 62 to compress the rock mass. While the motor 8 is rotating to wind the string 82. The tension detector 4 measures the tension of the string 82. When the rock block is damaged and broken due to extrusion operation, the camera 9 transmits the shot picture to the single chip microcomputer, and the single chip microcomputer feeds back the picture and the measured value of the tension detector to a tester.
In the test process, the motor 11 on the frame 10 is started simultaneously, and the whole cylinder body 1 is rocked, and the water inside the cylinder body 1 strikes rocks, and simulates the scene that the water flow strikes the rocks on the bank side.
In summary, in the device for testing the shear strength of the riparian rock structural surface by simulating water flow extrusion, the screw 62 is rotated to push the cylinder 62 out of the positioning cylinder 6 by the cooperation of the motor 8, the chain 66, the large gear 65 and the small gear 81. The purpose of squeezing the rock is achieved. Through immersing the rock in water, motor 11 and electric putter 12 drive whole cylinder body 1 and rock to make the water in the cylinder body 1 strike the rock, realize simulating the scene that the river strikes the rock. Thereby reach the effect of carrying out the test to the shearing strength of river bank rock.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a simulation extruded river bank rock structure face shear strength testing arrangement which characterized in that of rivers: the cylinder is characterized by comprising a cylinder body (1), wherein the lower end of the cylinder body (1) is spherical, a top cover (3) is arranged above the cylinder body (1), an internal thread is formed in the upper end of the cylinder body (1), an external thread is formed in the bottom of the top cover (3), the cylinder body (1) is in threaded connection with the top cover (3), a plurality of clamping plates (5) are welded at equal angles around a central axis at the bottom of the top cover (3), the lower ends of the clamping plates (5) extend into the cylinder body (1), a positioning cylinder (6) is fixedly installed at the lower end of each clamping plate (5), one end of each positioning cylinder (6) faces the central axis and is provided with a rock clamping device (7), rocks are positioned among the positioning cylinders (6) and are clamped by the rock clamping devices (7), water is injected into the cylinder body (;
the top cap (3) top is equipped with drive assembly, and drive assembly controls a plurality of rock screens ware (7) and is close to each other and extrudees the rock, and top cap (3) inner wall bottom fixed mounting has camera (9).
2. The riparian rock structural surface shear strength testing device simulating water flow extrusion of claim 1, wherein: the utility model discloses a positioning cylinder, including a location section of thick bamboo (6), cylinder (61) are equipped with in the location section of thick bamboo (6), and the cylinder (62) are equipped with in the location section of thick bamboo (6), and in cylinder (62) was stretched into to screw rod (61) one end, cylinder (62) and screw rod (61) threaded connection, a location section of thick bamboo (6), screw rod (61), cylinder (62) were in same axis, spout (63) have been seted up respectively from top to bottom to a location section of thick bamboo (6) inner wall, and cylinder (62) outer surface welding has slider (64) with spout (63) looks adaptation, and screw rod (61) pole body links to each other.
3. The riparian rock structural surface shear strength testing device simulating water flow extrusion of claim 2, wherein: the drive assembly comprises a large gear (65), a chain (66), a motor (8) and a small gear (81), the large gear (65) is welded on the rod body of the screw rod (61), the motor (8) is embedded at the top of the top cover (3), a transmission shaft of the motor (8) is connected with the small gear (81), one end of the chain (66) penetrates through the positioning cylinder (6) and extends to the inside of the positioning cylinder (6), and the large gear (65) is in transmission connection with the small gear (81) through the chain (66).
4. The riparian rock structural surface shear strength testing device simulating water flow extrusion of claim 3, wherein: a tension detector (4) is fixedly mounted at the top of the top cover (3), and a string (82) is connected between the detection end of the tension detector (4) and a transmission shaft of the motor (8).
5. The riparian rock structural surface shear strength testing device simulating water flow extrusion of claim 2, wherein: the rock clamping device (7) is composed of a clamping block (71), clamping pieces (72) and a cushion block (73), the clamping block (71) is arranged at equal angles around an axis, the clamping block (71) is welded with the cylinder (62), the clamping pieces (72) correspond to the clamping block (71) one to one, the clamping pieces (72) are made of flexible iron sheets, one end of each clamping piece (72) penetrates through the clamping block (71) to be bent in contact with the rock, the other end of each clamping piece (72) is provided with a protrusion and clamped with the clamping block (71), the cushion block (73) is located between the clamping pieces (72), and the cushion block (73) is fixedly bonded with the cylinder (62).
6. The riparian rock structural surface shear strength testing device simulating water flow extrusion of claim 1, wherein: the bottom of the cylinder body (1) is provided with a base (2), the inner side of the base (2) is pivoted with a plurality of balls (21), and the balls (21) are in surface contact with the bottom of the cylinder body (1).
7. The riparian rock structural surface shear strength testing device simulating water flow extrusion of claim 6, wherein: cylinder body (1) outside is equipped with frame (10), frame (10) fixed mounting has motor (11), motor (11) are located directly over cylinder body (1), vertical down of motor (11) transmission shaft, cylinder body (1) outside cover has rubber circle (13), rubber circle (13) one end fixed mounting has connecting rod (14), connecting rod (14) upper end is towards keeping away from top cap (3) direction slope, motor (11) transmission shaft fixed mounting has electric push rod (12), electric push rod (12) lower extreme is towards keeping away from top cap (3) direction slope, electric push rod (12) lower extreme has connecting rod (14) through screw threaded connection.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110224332.8A CN113109174A (en) | 2021-03-01 | 2021-03-01 | Riparian rock structural plane shear strength testing device for simulating water flow extrusion |
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| CN202110224332.8A CN113109174A (en) | 2021-03-01 | 2021-03-01 | Riparian rock structural plane shear strength testing device for simulating water flow extrusion |
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