CN208937435U - Landslide rock mass shear strength test device - Google Patents
Landslide rock mass shear strength test device Download PDFInfo
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- CN208937435U CN208937435U CN201821787000.0U CN201821787000U CN208937435U CN 208937435 U CN208937435 U CN 208937435U CN 201821787000 U CN201821787000 U CN 201821787000U CN 208937435 U CN208937435 U CN 208937435U
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Abstract
The utility model relates to a kind of landslide rock mass shear strength test devices, including vertical load applying mechanism, horizontal load applying mechanism, upper and lower shear box and controller, by the way that flat jack is arranged, expand the force surface to sample, ensure vertical load central axis in the face of being cut and by its center, it avoids generating eccentric moment, overcomes the technological deficiency of conventional method, significantly improve the accuracy of detection data；Cooperation flat jack has been specifically designed the structure type of counter-force support frame, facilitates the fixed flat jack of installation, and the height of flat jack is adjusted according to sample position, easy to assembly quick, supporting & stablizing, using reliable；The fit structure of ball and slideway sliding block is set by the opposite face in upper and lower shear box, ensure that detection sample is sheared by pre-set shear direction, test sample structural plane does not influence, and further increases the accuracy of testing result.
Description
Technical field
The utility model relates to a kind of geological prospecting rock mass to detect experimental rig, especially a kind of landslide rock mass shearing strength
Experimental rig is suitable for on-site test.
Background technique
The shearing strength of rock mass is one of most important mechanics parameter in rock mass engineering project mechanics, is the prevention and treatment such as landslide (side slope)
The important evidence of harnessing project stability analysis.The shear strength parameter of Accurate Determining rock mass to carry out preventing land slide design and
Estimation of stability has certain realistic meaning.
Currently, the on-site measurement method of shear strength of rock is mainly direct shear test, experimental condition is closer to rock
Body is practical.Field direct shear test device is the capital equipment for carrying out direct shear test, but exists ask as follows in use
Topic:
1, during testing, the vertical load center line of vertical load applying mechanism with detect sample cut face easily break it is vertical
Straight relationship, and vertical load applying mechanism center easily biases, and causes vertical load to exert a force sample uneven, influences detection knot
Fruit；
2, it during testing, changes, influences since the out-of-flatness of the structural plane of detection sample easily leads to shear direction
Testing result.
Based on this, existing landslide rock mass shear strength test device still needs to improve.
Summary of the invention
The purpose of this utility model is to provide for a kind of reasonable in design, service-strong cunning to solve the above problems
Slope shear strength of rock experimental rig, greatly avoid vertical load to sample force it is non-uniform happen, protect simultaneously
Card detection sample is cut by preset shear direction, is further ensured that the accuracy of test data.
The technical solution of the utility model is:
A kind of landslide rock mass shear strength test device, including vertical load applying mechanism, horizontal load applying mechanism, side
Upper and lower shear box and the controller for being sleeved on the outside of sample of shape, are characterized in that: the vertical load applying mechanism
By counter-force support frame, the flat jack being fixed below counter-force support frame, the upper and lower force transmitting board below flat jack, set
Roller bearing between upper and lower force transmitting board arranges composition, and the bottom surface of the lower force transmitting board is used to offset with the upper surface of sample, described anti-
Power support frame by the center line fixed cylinder vertical with sample upper surface, be uniformly distributed in the multiple horizontally-supported of fixed cylinder periphery
Bar, the connector sleeve being connect with horizontal support bar end thread, the support leg being threadedly coupled with connector sleeve other end composition, it is described solid
The middle part of safety barrel be equipped with horizontal baffle and using horizontal baffle be separated into epicoele for containing counter-force weight and for installing it is flat
The cavity of resorption of jack, the internal diameter of the cavity of resorption and the outer diameter of flat jack are equal, and the horizontal baffle is equipped with through-hole, described flat
The oil nozzle of jack enters epicoele by through-hole；
The bottom of the lower shear box is equipped with for the skirt affixed with sample bottom periphery rock mass, the lower shear box
Top surface is respectively equipped with left and right slideway, and the left and right slideway is parallel with shear direction respectively, and the outside of slideway is inlaid with respectively
The one row ball parallel with slideway, the bottom surface of the upper shear box are equipped with respectively and outside the sliding block of left and right slideway cooperation and sliding block
The bottom surface of side is contacted with ball, and the side that the upper shear box corresponds to horizontal load applying mechanism is equipped with vertical positioning strip；
The horizontal load applying mechanism is by the pedestal to offset with hole inner wall where live sample, the water being fixed on pedestal
Flat jack, the counter-force backing plate composition set on the push plate of level jack front end, between level jack rear end and pedestal,
The locating slot cooperated with the vertical positioning strip of upper shear box is equipped in the middle part of the push plate front end face.
The top edge of above-mentioned landslide rock mass shear strength test device, the upper force transmitting board is sensed equipped with vertical deviation
Device, the upper shear box backwards to level jack side be equipped with horizontal displacement sensors, the vertical deviation sensor and
The signal output end of horizontal displacement sensors is connected with controller.
The oil nozzle of above-mentioned landslide rock mass shear strength test device, the flat jack is connected by pipeline and oil pressure pump I
Connect and be equipped on connecting line pressure sensor I, the oil nozzle of the level jack connect by pipeline with oil pressure pump II and
Pressure sensor II, signal output end and the control of the pressure sensor I and pressure sensor II are equipped on connecting line
Device is connected.
Above-mentioned landslide rock mass shear strength test device, signal input part and the control of the oil pressure pump I and oil pressure pump II
Device processed is connected.
Above-mentioned landslide rock mass shear strength test device, the thread rotary orientation at the both ends of the connector sleeve of the counter-force support frame
On the contrary, in favor of rotation connector sleeve when horizontal support bar and support leg simultaneously inside contract with it is overhanging, reach quickly adjustment support range
The purpose of length.
The beneficial effects of the utility model are:
1, by setting flat jack, expand the force surface to sample, it is ensured that vertical load central axis is in the face of being cut
And by its center, avoids generating eccentric moment, overcome the technological deficiency of conventional method, significantly improve the accurate of detection data
Property.
2, cooperation flat jack has been specifically designed the structure type of counter-force support frame, facilitates the fixed flat jack of installation, and
The height of flat jack is adjusted according to sample position, easy to assembly quick, supporting & stablizing, using reliable；
3, the fit structure of ball and slideway sliding block is set by the opposite face in upper and lower shear box, ensure that detection examination
Sample is sheared by pre-set shear direction, and test sample structural plane does not influence, and further increases the accuracy of testing result.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the A direction view of counter-force support frame in Fig. 1；
Fig. 3 is the B direction view of upper and lower shear box in Fig. 1；
Fig. 4 is the electric control theory figure of the utility model.
In figure: holes where 1. live samples, 2. support legs, 3. connector sleeves, 4. horizontal support bars, 5. fixed cylinders, 6. epicoeles,
7. oil nozzle, 8. horizontal baffles, 9. flat jacks, 10. vertical deviation sensors, force transmitting board on 11., 12. horizontal displacement sensors,
13. shear boxs, 17. push plates, 18. pedestals, 19. level jacks, 20. are descended instead in shear box, 14. roller bearings row, 15. balls, 16. on
Power backing plate, 21. oil nozzles, 22. vertical positioning strips, 23. sliding blocks, 24. controllers, 25. oil pressure pumps I, 26. oil pressure pumps II, 27. pressure
The lower force transmitting board of sensor I, 28. pressure sensors II, 29..
Specific embodiment
As Figure 1-Figure 4, the landslide rock mass shear strength test device, including vertical load applying mechanism, horizontal load
Lotus applying mechanism, the rectangular upper and lower shear box 13 being used to be sleeved on the outside of sample, 16, vertical deviation sensor 10, horizontal position
Displacement sensor 12 and controller 24.
Wherein, the vertical load applying mechanism is by counter-force support frame, the flat jack being fixed below counter-force support frame
9, set on the upper and lower force transmitting board 11 of 9 lower section of flat jack, 29,14 composition of roller bearing row between upper and lower force transmitting board 11,29.
The bottom surface of the lower force transmitting board 29 is used to offset with the upper surface of sample.The counter-force support frame is by center line and sample upper surface
Vertical fixed cylinder 5, four horizontal support bars 4 for being uniformly distributed in 5 periphery of fixed cylinder connect with 4 end thread of horizontal support bar
The connector sleeve 3 connect, the support leg 2 being threadedly coupled with 3 other end of connector sleeve form.The middle part of the fixed cylinder 5 be equipped with it is horizontal every
Plate 8 and it is separated into the epicoele 6 for containing counter-force weight and the cavity of resorption for installing flat jack 9 using horizontal baffle 8, it is described
The internal diameter of cavity of resorption is equal with the outer diameter of flat jack 9, and the horizontal baffle 8 is equipped with through-hole, the oil nozzle 7 of the flat jack 9
Epicoele 6 is entered by through-hole.The thread rotary orientation at the both ends of the connector sleeve 3 of the counter-force support frame is on the contrary, so that rotation connects
When female connector horizontal support bar 4 and support leg 2 inside contract simultaneously with it is overhanging, achieve the purpose that quickly to adjust bearing length.Support leg 2 by
Threaded strut and foot pad composition, the outside of the foot pad are equipped with disconnecting prevention structure.
The bottom of the lower shear box 16 is equipped with for the skirt affixed with sample bottom periphery rock mass, the lower shear box
16 top surface is respectively equipped with left and right slideway, and the left and right slideway is parallel with shear direction respectively, and the outside of slideway is inlayed respectively
Embedded with the row ball 15 parallel with slideway, the bottom surface of the upper shear box 13 is equipped with the sliding block with the cooperation of left and right slideway respectively
23 and the bottom surface in the outside of sliding block 23 contacted with ball 15, the side of the upper correspondence of the shear box 13 horizontal load applying mechanism is equipped with
Vertical positioning strip 22.
The horizontal load applying mechanism by offset with 1 inner wall of hole where live sample pedestal 18, be fixed on pedestal 18
On level jack 19, set on 19 front end of level jack push plate 17, be set to 19 rear end of level jack and pedestal 18 it
Between counter-force backing plate 20 form, be equipped in the middle part of 17 front end face of push plate and determine with what the vertical positioning strip 22 of upper shear box 13 cooperated
Position slot.
In the present embodiment, the top edge of the upper force transmitting board 11 is equipped with vertical deviation sensor 10, the upper shear box
13 side backwards to level jack 19 is equipped with horizontal displacement sensors 12, the vertical deviation sensor 10 and horizontal displacement
The signal output end of sensor 12 is connected with controller 24.The oil nozzle 7 of the flat jack 9 is connected by pipeline and oil pressure pump I 25
Pressure sensor I 27 is connect and is equipped on connecting line, the oil nozzle 21 of the level jack 19 passes through pipeline and oil pressure pump II
26 connect and are equipped with pressure sensor II 28, the letter of the pressure sensor I 27 and pressure sensor II 28 on connecting line
Number output end is connected with controller 24.The signal input part of the oil pressure pump I 25 and oil pressure pump II 26 is connected with controller 24.
Working principle:
In use, first lower shear box 16 is sleeved on outside sample and carries out affixed processing to lower shear box 16, then successively
Install shear box 13, horizontal load applying mechanism and vertical load applying mechanism.By horizontal displacement sensors 12, vertical deviation
Sensor 10, oil pressure pump I 25, oil pressure pump II 26, pressure sensor I 27 and pressure sensor II 28 respectively with 24 phase of controller
Even.Normal stress is applied to sample by vertical load applying mechanism using oil pressure pump I 25, keeps positive pressure after reaching setting numerical value
Power is constant, then applies shear stress step by step by horizontal load applying mechanism using oil pressure pump II 26, (such as every setting time
30s) add level-one, until sample is cut.Cut mark: pressure sensor II 28 transmits data and no longer rises, or even decline, or
Shear displacemant persistently increases.
Claims (5)
1. a kind of landslide rock mass shear strength test device, including it is vertical load applying mechanism, horizontal load applying mechanism, rectangular
For being sleeved on upper and lower shear box and controller on the outside of sample, it is characterised in that: the vertical load applying mechanism is by anti-
Power support frame, the flat jack being fixed below counter-force support frame, the upper and lower force transmitting board below flat jack, be set to it is upper,
Roller bearing between lower force transmitting board arranges composition, and the bottom surface of the lower force transmitting board is used to offset with the upper surface of sample, the counter-force branch
Support by the center line fixed cylinder vertical with sample upper surface, multiple horizontal support bars for being uniformly distributed in fixed cylinder periphery, with
The connector sleeve of horizontal support bar end thread connection, the support leg composition being threadedly coupled with the connector sleeve other end, the fixed cylinder
Middle part be equipped with horizontal baffle and using horizontal baffle be separated into epicoele for containing counter-force weight and for installing it is flat very heavy
The cavity of resorption on top, the internal diameter of the cavity of resorption and the outer diameter of flat jack are equal, and the horizontal baffle is equipped with through-hole, described flat very heavy
The oil nozzle on top enters epicoele by through-hole；
The bottom of the lower shear box is equipped with for the skirt affixed with sample bottom periphery rock mass, the top surface of the lower shear box
It is respectively equipped with left and right slideway, the left and right slideway is parallel with shear direction respectively, and the outside of slideway is inlaid with a row respectively
The ball parallel with slideway, the bottom surface of the upper shear box are equipped with respectively and on the outside of the sliding block of left and right slideway cooperation and sliding block
Bottom surface is contacted with ball, and the side that the upper shear box corresponds to horizontal load applying mechanism is equipped with vertical positioning strip；
The horizontal load applying mechanism is by the pedestal to offset with hole inner wall where live sample, the level thousand being fixed on pedestal
Jin top, the counter-force backing plate composition set on the push plate of level jack front end, between level jack rear end and pedestal, it is described
The locating slot cooperated with the vertical positioning strip of upper shear box is equipped in the middle part of push plate front end face.
2. landslide rock mass shear strength test device according to claim 1, it is characterised in that: the top of the upper force transmitting board
Portion edge is equipped with vertical deviation sensor, and the side backwards to level jack of the upper shear box is equipped with horizontal displacement sensing
The signal output end of device, the vertical deviation sensor and horizontal displacement sensors is connected with controller.
3. landslide rock mass shear strength test device according to claim 1, it is characterised in that: the oil of the flat jack
Mouth is connect with oil pressure pump I by pipeline and is equipped with pressure sensor I on connecting line, and the oil nozzle of the level jack passes through
Pipeline connect with oil pressure pump II and is equipped with pressure sensor II, the pressure sensor I and pressure sensor on connecting line
II signal output end is connected with controller.
4. landslide rock mass shear strength test device according to claim 3, it is characterised in that: the oil pressure pump I and oil
The signal input part of press pump II is connected with controller.
5. landslide rock mass shear strength test device according to claim 1, it is characterised in that: the counter-force support frame
The thread rotary orientation at the both ends of connector sleeve is opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821787000.0U CN208937435U (en) | 2018-11-01 | 2018-11-01 | Landslide rock mass shear strength test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821787000.0U CN208937435U (en) | 2018-11-01 | 2018-11-01 | Landslide rock mass shear strength test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208937435U true CN208937435U (en) | 2019-06-04 |
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ID=66726689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821787000.0U Active CN208937435U (en) | 2018-11-01 | 2018-11-01 | Landslide rock mass shear strength test device |
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| CN (1) | CN208937435U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525728A (en) * | 2020-11-23 | 2021-03-19 | 西安建筑科技大学 | Large-size reinforced soil shear strength testing equipment and testing method |
-
2018
- 2018-11-01 CN CN201821787000.0U patent/CN208937435U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112525728A (en) * | 2020-11-23 | 2021-03-19 | 西安建筑科技大学 | Large-size reinforced soil shear strength testing equipment and testing method |
| CN112525728B (en) * | 2020-11-23 | 2023-09-08 | 西安建筑科技大学 | Large-size reinforced soil shear strength testing equipment and testing method |
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