CN206583731U - A kind of portable shear of rock strength testing device - Google Patents
A kind of portable shear of rock strength testing device Download PDFInfo
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- CN206583731U CN206583731U CN201720176350.2U CN201720176350U CN206583731U CN 206583731 U CN206583731 U CN 206583731U CN 201720176350 U CN201720176350 U CN 201720176350U CN 206583731 U CN206583731 U CN 206583731U
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- sample groove
- truss
- block
- shear
- rock
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Abstract
The utility model provides a kind of portable shear of rock strength testing device.The device includes：Truss, limited block, vertical guide rail, left sample groove, pulling force sensor, displacement transducer, pull rope, limited slip block, motor, data line, right sample groove, computer, fixator, spheric seat, bulb, pressure bearing, crank, screw, pressure sensor etc..The device is highly integrated, reliable and stable with micro- case structure, and movement is convenient, it is easy to field application；And the friction process in real intrinsic fracture face can be simulated, can guarantee that it is the plane-plane contact fitted like a glove that face is stitched in friction process, obtains accurately shear strength value；Also have the advantages that simple to operate, when being tested using the device, all data transport to computer, realize automatic data collection function.The shearing strength and shear property in the measurable rock intrinsic fracture face of test device that the utility model is provided, obtain mechanical condition, displacement characteristic of rock shearing slip etc. from shearing test result.
Description
Technical field
The utility model is related to a kind of portable shear of rock strength testing device, belongs to rock mechanics experiment technology neck
Domain.
Background technology
Shear of rock intensity is in each Rock And Soil engineering field using widely.At present, in research compact reservoir, particularly
During clay shale with low permeability gas reservoir, the affecting laws for evaluating different reservoir seam face shearing strength are extremely important.Therefore, it is natural to shale
The device that fracture surface shearing strength rule is tested is very important in this area, and it can probe into shearing slip condition,
Theoretical foundation is provided for engineer applied.
At present, shearing strength can be determined by the method for staight scissors.After rock sample is processed, the rubbing surface warp of shearing slip
Manual polishing is crossed, to inserting in upper and lower test box after smooth, it is ensured that to flour milling exposure.Then by upper and lower test box exposure
Part is perfectly aligned, is placed on hydraulic press, and lower test box is fixed.When test starts, apply directly over upward test box
Normal pressure, laterally applies tangential force.By changing normal pressure, the tangential force and lateral displacement during this are recorded, you can draw
Shearing strength during different normal pressures.
But the technology that the method for staight scissors determines shearing strength is remained in many defects.First, resisted using the program
Strength test is cut, it is necessary to carry out the processing work flow such as fine cutting, polishing to the shear surface of rock sample two, is needed during being somebody's turn to do
Cutting bruting process is lubricated and cooled down with water or other fluids, the fluid of introducing can be produced largely to shear surface
Pollution, there is largely distortion in measured frictional strength；Secondly, the rock surface smooth even by polishing, slightly
Rugosity is smaller, and intrinsic fracture face often show as buffed surface in the characteristics such as anisotropism is strong, roughness is big, test process with
The state difference in intrinsic fracture face is larger；Again, whole test process needs that servo-hydraulic press is supporting, and facility requirements are very high.
Therefore, develop a kind of portable shear of rock strength testing device, be still this area urgent problem to be solved it
One.
Utility model content
In order to solve the above technical problems, the purpose of this utility model is to provide a kind of portable shear of rock strength test
Device.The device can measure the shearing strength and shear property in rock intrinsic fracture face, and then can be from shearing test result
It is middle to obtain mechanical condition, displacement characteristic that rock shearing is slided etc..
To reach above-mentioned purpose, the utility model provides a kind of portable shear of rock strength testing device, the device
At least include：Truss, limited block, vertical guide rail, left sample groove, pulling force sensor, displacement transducer, pull rope, limited slip block, horse
Reach, data line, right sample groove, computer, fixator, spheric seat, bulb, pressure bearing, crank, screw and pressure sensing
Device；
Wherein, the truss provides rigid support for the portable shear of rock strength testing device；The limited block
The bottom inside of the truss is arranged at, one end of the vertical guide rail is vertically connected at the upper end of the limited block, the left side
The side laminating vertical guide rail of sample groove, the limited block defines left sample groove vertical sliding motion on the vertical guide rail
Original position, it is ensured that the repeatability of each sliding position；
The pulling force sensor and institute's displacement sensors are arranged on the top of the left sample groove, are detected and record with synchronous
The displacement of (i.e. the test process of shearing slip) and shearing force data in test process；
The limited slip block is connected on the inside of the left part of the truss, and the other end of the vertical guide rail is vertically connected at described
The lower end of limited slip block, the limited slip block defines the final position of left sample groove vertical sliding motion on the vertical guide rail, protects
The repeatability of each sliding position of card；
The motor is connected on the inside of the left part of the truss, and the motor passes through the pull rope and the left sample groove top
The pulling force sensor connection at end, to provide the shearing driving force in test process；
The fixator is located in the truss, and it includes roller bearing, contiguous block, locking screw holes, universal ball seat and universal
Connecting rod；The roller bearing is arranged at the bottom of the contiguous block, and is contacted with the bottom inside of the truss；The Universal linking lever spiral shell
Rotation is in the locking screw holes of the contiguous block center of top, and the top of the Universal linking lever is arranged on the universal ball seat
It is interior；
The right sample groove is arranged at the opposite of the left sample groove, and the side of the right sample groove is connected to the fixator
Contiguous block one side, the roller bearing is used to reduce resistance when the right sample groove is moved left and right, rotates the Universal linking lever
For making the top of the universal ball seat be close to the inside top of the truss, with work of the locked right sample groove on vertical
Dynamic space, it is ensured that the accuracy of detection of displacement in test process；
The another side of the contiguous block is connected by the pressure sensor with the spheric seat, the pressure sensor
For detecting and recording the normal pressure applied in test process；The spheric seat is correspondingly arranged with the bulb, and the pressure
Power bearing is connected to the bulb；The screw is arranged on the right-hand rod of the truss, and the crank passes through the spiral shell
Hole is simultaneously withstood on the pressure bearing, and shaking the crank is used to promote the bulb to coincide with the spheric seat, and then promotes
The bulb is adjusted in the spheric seat so that the contiguous block of the fixator drives right sample groove to move left and right, and then ensures to divide
Not An Zhuan left sample groove, the fracture surface of two samples in right sample groove be in contact and fit like a glove, and pass through and continue to shake institute
State crank and apply normal pressure；
The pulling force sensor, institute's displacement sensors and the pressure sensor respectively by the data line with
The computer connection, will detect that the data with record are transferred in the computer by the data line, enters
And record and processing data.
According to embodiment of the present utility model, it is preferable that said apparatus also includes castor, the castor is arranged at
The bottom of the truss, to facilitate the movement of the portable shear of rock strength testing device.
The method for carrying out shear of rock strength test using device of the present utility model may comprise steps of：
(1) rock block of the collection in worksite to be measured of collection is cleaned, the rock block after cleaning is cut into rule
Shape then, then cleave into two, two fitted like a glove splitting surface, to simulate intrinsic fracture face, obtain two samples；
(2) pressure sensor and computer are opened；And two samples are respectively charged into left sample groove and right sample groove and fixed,
Make the fracture surface of two samples relative；The Universal linking lever of rotational fixture make universal ball seat top and truss inside top it is tight
Patch, with activity space of the locked right sample groove on vertical, it is ensured that the accuracy of detection of displacement in test process；Then crank is shaken to lead to
Excess pressure bearing promotes bulb to be coincide with spheric seat, and promotes bulb to be adjusted in spheric seat so that the contiguous block of fixator drives
Right sample groove is moved left and right, and the fracture surface to two samples being separately mounted in left sample groove, right sample groove is in contact and fitted like a glove,
It is further continued for shake crank and applies positive pressure to predetermined value；
(3) starter motor and pulling force sensor and displacement transducer are opened, left sample groove is driven in limited block by pull rope
Vertical sliding motion on vertical guide rail between limited slip block, to carry out shearing test；
(4) detect and record with processing pulling force sensor, displacement transducer and pressure sensor by computer recording
Data, obtain shear of rock intensity.
In the above-mentioned methods, it is preferable that the shear of rock intensity in step (4) is calculated by below equation：
In formula, τ-shear of rock intensity, units MPa；Tp- Peak Shear power, unit N, it is surveyed for the shearing of step (3)
Displacement in shearing force maximum in the displacement obtained during examination-shearing force curve, the curve is measured by displacement transducer,
Shearing force is measured by pulling force sensor；The area of A-shear surface area, i.e. sample splitting surface, unit mm2。
, it is necessary to set pressure (the i.e. default malleation of a fixation before being tested using device of the present utility model
Power), the pressure is measured by pressure sensor；Displacement (being measured by displacement transducer)-shearing force is obtained during shearing test
(being measured by pulling force sensor) curve, draws Peak Shear power, and then obtain rock by above-mentioned formula calculating by the curve
Shearing strength.
In the above-mentioned methods, it is preferable that the rock block in step (1) is fast for shale rock.
The portable shear of rock strength testing device that the utility model is provided mainly has advantages below：
1. portability, the device is highly integrated, main test component is installed in truss, with micro- case structure,
Device is reliable and stable, and bottom of device can be provided with castor, and movement is convenient, it is easy to field application；
2. the friction process in real intrinsic fracture face can be simulated, it ensure that face is stitched in friction process to fit like a glove
Plane-plane contact, obtains accurately shear strength value；
3. simple to operate, when being tested using the device, all data transport to computer, realize automatic data collection function.
In summary, the portable shear of rock strength testing device that the utility model is provided can measure rock and naturally split
The shearing strength and shear property in seam face, and then obtain from shearing test result the mechanical condition of rock shearing slip, displacement
Feature etc..Also, the device has the advantages that simple and practical, mobility is strong, facilitates in-site measurement to analyze, and disclosure satisfy that oil gas
The conditions such as the complexity at field scene.
Brief description of the drawings
The structure for the portable shear of rock strength testing device that Fig. 1 provides for the embodiment of the utility model one is shown
It is intended to；
Fixation in the portable shear of rock strength testing device that Fig. 2 provides for the embodiment of the utility model one
The structural representation of device；
Fig. 3 is displacement-shearing force curve in embodiment 2.
Primary clustering symbol description：
1st, castor, 2, truss, 3, limited block, 4, vertical guide rail, 5, left sample groove, 6, sample, 7, pulling force sensor, 8, displacement
Sensor, 9, pull rope, 10, limited slip block, 11, motor, 12, data line, 13, right sample groove, 14, computer, 15, fixed
Device, 16, spheric seat, 17, bulb, 18, pressure bearing, 19, crank, 20, screw, 21, pressure sensor, 22, roller bearing, 23, even
Connect block, 24, locking screw holes, 25, universal ball seat, 26, Universal linking lever.
Embodiment
In order to be more clearly understood to technical characteristic of the present utility model, purpose and beneficial effect, now to this practicality
New technical scheme carry out it is described further below, but it is not intended that to it is of the present utility model can practical range restriction.
Embodiment 1
A kind of portable shear of rock strength testing device is present embodiments provided, as shown in figure 1, the device includes：Pin
Wheel 1, truss 2, limited block 3, vertical guide rail 4, left sample groove 5, pulling force sensor 7, displacement transducer 8, pull rope 9, limited slip block 10,
Motor 11, data line 12, right sample groove 13, computer 14, fixator 15, spheric seat 16, bulb 17, pressure bearing 18, song
Handle 19, screw 20 and pressure sensor 21；
Wherein, the truss 2 provides rigid support for the portable shear of rock strength testing device；
The bottom of the truss 2 is provided with the castor 1, to facilitate the portable shear of rock strength testing device
It is mobile；
The limited block 3 is arranged at the bottom inside of the truss 2, and one end of the vertical guide rail 4 is vertically connected at institute
The upper end of limited block 3 is stated, the side laminating vertical guide rail 4 of the left sample groove 5, the limited block 3 defines the left sample
The original position of the vertical sliding motion on the vertical guide rail 4 of groove 5, it is ensured that the repeatability of each sliding position；
The pulling force sensor 7 and institute's displacement sensors 8 are arranged on the top of the left sample groove 5, with it is synchronous detect with
Record displacement and the shearing force data of (i.e. the test process of shearing slip) in test process；
The limited slip block 10 is connected on the inside of the left part of the truss 2, and the other end of the vertical guide rail 4 is vertically connected at
The lower end of the limited slip block 10, the limited slip block 3 defines the end of the left sample groove 5 vertical sliding motion on the vertical guide rail 4
Stop bit is put, it is ensured that the repeatability of each sliding position；
The motor 11 is connected on the inside of the left part of the truss 2, and the motor 11 passes through the pull rope 9 and the left side
The pulling force sensor 7 on the top of sample groove 5 is connected, to provide the shearing driving force in test process；
The fixator 15 is located in the truss 2, as shown in Fig. 2 it includes roller bearing 22, contiguous block 23, locking screw holes
24th, universal ball seat 25 and Universal linking lever 26；The roller bearing 22 is arranged at the bottom of the contiguous block 23, and with the truss 2
Bottom inside contact；The spiral of Universal linking lever 26 is arranged in the locking screw holes 24 of the center of top of contiguous block 23, institute
The top for stating Universal linking lever 26 is arranged in the universal ball seat 25；
The right sample groove 13 is arranged at the opposite of the left sample groove 5, and the right sample groove 13 side be connected to it is described
The one side of the contiguous block 23 of fixator 15, the roller bearing 22 is used to reduce resistance when the right sample groove 13 is moved left and right, rotation
Turning the Universal linking lever 26 is used to make the top of the universal ball seat 25 with the inside top of the truss 2 be close to, with locked institute
State activity space of the right sample groove 13 on vertical, it is ensured that the accuracy of detection of displacement in test process；
The another side of the contiguous block 23 is connected by the pressure sensor 21 with the spheric seat 16, the pressure
Sensor 21 is used to detect and record the normal pressure applied in test process；The spheric seat 16 is corresponding with the bulb 17 to be set
Put, and the pressure bearing 18 is connected to the bulb 17；The screw 20 is arranged on the right-hand rod of the truss 2, and
And the crank 19 is through the screw 20 and withstands on the pressure bearing 18, shaking the crank 19 is used to promote the ball
First 17 coincide with the spheric seat 16, and then promote the bulb 17 to be adjusted in the spheric seat 16 so that the fixator 15
Contiguous block 23 drive right sample groove 13 to move left and right, and then ensure to be separately mounted to two samples in left sample groove 5, right sample groove 13
6 fracture surface is in contact, and the bulb 17 and the spheric seat 16 cooperate, it is ensured that the fracture surface of two samples 6 is kissed completely
Close, and by continuing to shake the application of crank 19 normal pressure；
The pulling force sensor 7, institute's displacement sensors 8 pass through the data transfer respectively with the pressure sensor 21
Line 12 is connected with the computer 14, by by detection with record data be transferred to by the data line 12 it is described in terms of
In calculation machine 14, and then record and processing data.
Embodiment 2
A kind of portable Determination Method of Rock Shear Strength is present embodiments provided, this method is provided using embodiment 1
Test device, it comprises the following steps：
(1) rock block of the collection in worksite to be measured of collection is cleaned, the rock block after cleaning is cut into rule
Shape then, then cleave into two, two fitted like a glove splitting surface, to simulate intrinsic fracture face, obtain two samples
6；
(2) pressure sensor 21 and computer 14 are opened；And two samples 6 are respectively charged into left sample groove 5 and right sample groove 13
And fix, make the fracture surface of two samples 6 relative；The Universal linking lever 26 of rotational fixture 15 make the top of universal ball seat 25 with
The inside top of truss 2 is close to, with activity space of the locked right sample groove 13 on vertical, it is ensured that the detection of displacement in test process
Precision；Then shake crank 19 promotes bulb 17 to be coincide with spheric seat 16 by pressure bearing 18, and promotes bulb 17 spherical
Adjusted in seat 16 so that the contiguous block 23 of fixator 15 drives right sample groove 13 to move left and right, to being separately mounted to left sample groove 5, right sample
The fracture surface of two samples 6 in groove 13 is in contact and fitted like a glove, and is further continued for shake crank 19 and applies positive pressure to predetermined value；
(3) starter motor 11 and pulling force sensor 7 and displacement transducer 8 are opened, drives left sample groove 5 to exist by pull rope 9
Vertical sliding motion on vertical guide rail 4 between limited block 3 and limited slip block 10, to carry out shearing test；
(4) detected by the record of computer 14 with processing pulling force sensor 7, displacement transducer 8 and pressure sensor 21
With the data of record, shear of rock intensity is obtained；
Wherein, shear of rock intensity is calculated by below equation：
In formula, τ-shear of rock intensity, units MPa；Tp- Peak Shear power, unit N, it is surveyed for the shearing of step (3)
Displacement in shearing force maximum in the displacement obtained during examination-shearing force curve, the curve is measured by displacement transducer,
Shearing force is measured by pulling force sensor；The area of A-shear surface area, i.e. sample splitting surface, unit mm2。
The normal pressure set in the present embodiment is 200N, and splitting surface area is 20 × 20mm.Obtained during shearing test
Displacement-shearing force curve it is as shown in Figure 3.Shearing force maximum in Fig. 3 is Peak Shear power -137N, and calculating can be obtained
Obtain shearing strength 0.34MPa.I.e. shearing strength of the sample under the conditions of 0.5MPa direct stress is 0.34MPa.
Claims (2)
1. a kind of portable shear of rock strength testing device, it is characterised in that the device at least includes：Truss, limited block, hang down
Direction guiding rail, left sample groove, pulling force sensor, displacement transducer, pull rope, limited slip block, motor, data line, right sample groove, calculating
Machine, fixator, spheric seat, bulb, pressure bearing, crank, screw and pressure sensor；
Wherein, the truss provides rigid support for the portable shear of rock strength testing device；The limited block is set
In the bottom inside of the truss, one end of the vertical guide rail is vertically connected at the upper end of the limited block, the left sample groove
Side fit the vertical guide rail, the limited block defines that left sample groove vertical sliding motion on the vertical guide rail rises
Beginning position, it is ensured that the repeatability of each sliding position；
The pulling force sensor and institute's displacement sensors are arranged on the top of the left sample groove, are tested with synchronous detect with record
During displacement and shearing force data；
The limited slip block is connected on the inside of the left part of the truss, and the other end of the vertical guide rail is vertically connected at the on-slip
The lower end of block, the limited slip block defines the final position of left sample groove vertical sliding motion on the vertical guide rail, it is ensured that every
The repeatability of secondary sliding position；
The motor is connected on the inside of the left part of the truss, and the motor passes through the pull rope and the left sample groove top
Pulling force sensor is connected, to provide the shearing driving force in test process；
The fixator is located in the truss, and it includes roller bearing, contiguous block, locking screw holes, universal ball seat and Universal linking lever；
The roller bearing is arranged at the bottom of the contiguous block, and is contacted with the bottom inside of the truss；The Universal linking lever spiral peace
In the locking screw holes of the contiguous block center of top, the top of the Universal linking lever is arranged in the universal ball seat；
The right sample groove is arranged at the opposite of the left sample groove, and the side of the right sample groove is connected to the company of the fixator
Connect the one side of block；The roller bearing is used to reduce resistance when the right sample groove is moved left and right, and rotating the Universal linking lever is used for
The top of the universal ball seat is set to be close to the inside top of the truss, it is empty with activity of the locked right sample groove on vertical
Between, it is ensured that the accuracy of detection of displacement in test process；
The another side of the contiguous block is connected by the pressure sensor with the spheric seat, and the pressure sensor is used for
Detection and the normal pressure applied in record test process；The spheric seat is correspondingly arranged with the bulb, and the pressure axis
Hold and be connected to the bulb；The screw is arranged on the right-hand rod of the truss, and the crank passes through the screw simultaneously
Withstand on the pressure bearing；Shaking the crank is used to promote the bulb to coincide with the spheric seat, and then promotes described
Bulb is adjusted in the spheric seat so that the contiguous block of the fixator drives right sample groove to move left and right, and then ensures to pacify respectively
The fracture surface of two samples in left sample groove, right sample groove is in contact and fitted like a glove, and by continuing to shake the song
Handle applies normal pressure；
The pulling force sensor, institute's displacement sensors and the pressure sensor respectively by the data line with it is described
Computer is connected, and will detect that the data with record are transferred in the computer by the data line, Jin Erji
Record and processing data.
2. portable shear of rock strength testing device according to claim 1, it is characterised in that the device also includes pin
Wheel, the castor is arranged at the bottom of the truss, to facilitate the movement of the portable shear of rock strength testing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720176350.2U CN206583731U (en) | 2017-02-27 | 2017-02-27 | A kind of portable shear of rock strength testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720176350.2U CN206583731U (en) | 2017-02-27 | 2017-02-27 | A kind of portable shear of rock strength testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206583731U true CN206583731U (en) | 2017-10-24 |
Family
ID=60092040
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720176350.2U Withdrawn - After Issue CN206583731U (en) | 2017-02-27 | 2017-02-27 | A kind of portable shear of rock strength testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206583731U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680115A (en) * | 2017-02-27 | 2017-05-17 | 中国石油大学(北京) | Portable device and method for testing rock shearing strength |
-
2017
- 2017-02-27 CN CN201720176350.2U patent/CN206583731U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680115A (en) * | 2017-02-27 | 2017-05-17 | 中国石油大学(北京) | Portable device and method for testing rock shearing strength |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20171024 Effective date of abandoning: 20190507 |