CN106918552A - Rock frictional test experimental provision and method - Google Patents
Rock frictional test experimental provision and method Download PDFInfo
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- CN106918552A CN106918552A CN201710134972.3A CN201710134972A CN106918552A CN 106918552 A CN106918552 A CN 106918552A CN 201710134972 A CN201710134972 A CN 201710134972A CN 106918552 A CN106918552 A CN 106918552A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/02—Measuring coefficient of friction between materials
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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
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/0003—Steady
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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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/04—Chucks, fixtures, jaws, holders or anvils
- G01N2203/0429—Chucks, fixtures, jaws, holders or anvils using adhesive bond; Gluing
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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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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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
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- General Physics & Mathematics (AREA)
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- Automation & Control Theory (AREA)
- Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The present invention provides a kind of rock frictional test experimental provision and method, and the rock frictional test experimental provision includes rock fixation kit to be measured, force application assembly and detection components.Rock fixation kit to be measured includes sliding groove and fixing groove, and the rock to be measured in rock to be measured and fixing groove in sliding groove has relative rubbing surface, and sliding groove can be slided relative to fixing groove.Normal pressure applying mechanism in force application assembly applies pressure in the glide direction perpendicular to sliding groove, and tangential force applying mechanism applies the active force along the glide direction of sliding groove on sliding groove.Displacement of the displacement transducer detection sliding groove relative to fixing groove in detection components, active force when pulling force sensor detection tangential force applying mechanism drives sliding groove to slide, so as to obtain the coefficient of friction and frictional strength of rock to be measured.Therefore, the present invention is provided rock frictional test experimental provision and method are applied to the measuring of rock in irregular shape, improve the accuracy of experimental result.
Description
Technical field
The present invention relates to rock frictional test evaluating apparatus and evaluation method, more particularly to a kind of rock frictional test experimental provision and method.
Background technology
The Efficient Development of unconventionaloil pool needs to carry out reservoir reconstruction, to form splitting with high flow conductivity in reservoir
Seam system, so as to obtain industrial gas.Reservoir day must be at utmost activated from high yield unlike conventional gas and oil reservoir, is obtained
Simultaneously there is shearing slip in right crack, realize being mutually communicated between intrinsic fracture.Shale reservoir fracture seam face coefficient of friction and
Its frictional strength is that intrinsic fracture shearing slip forms one of governing factor that the seam being mutually communicated is netted.Can for intrinsic fracture
Generation shearing slip, at present both at home and abroad also without complete and practical evaluation method.In addition, the coring difficulty of shale is ground
Carry out large-scale logistics organizations, simulate hydraulic fracturing to evaluate reservoir into the restraining factors for being seamed into net Potential Evaluation in face.Therefore, utilize
The irregular reservoir landwaste goods sillar evaluation seam face coefficient of friction that drilling fluid carrying returns to ground is extremely important.At present both at home and abroad
The evaluating apparatus and evaluation method of the function are also capable of achieving, a set of such device of design is very necessary, to probe into page
There is the condition of shearing slip in rock reservoir, for reservoir reconstruction engineer applied provides theoretical foundation.
At present, it is staight scissors method to be usually used in determining frictional strength and the method for coefficient of friction.After rock sample is processed, shearing
The rubbing surface of slip by manual polishing, to inserting after smooth in upper and lower experiment box, it is ensured that to flour milling exposure.Then will
Upper and lower experiment box exposure part is perfectly aligned, is placed on hydraulic press, and lower experiment box is fixed.When experiment starts, upper experiment box is just
Top applies normal pressure, and tangential force is applied laterally through servo hydraulic machine.By changing normal pressure, record tangential during this
Power and lateral displacement, you can draw frictional strength during different normal pressures.
But it is primarily present following drawback in actual continuous mode in above-mentioned staight scissors method：Rubbed using the program
Intensity experiment is wiped, it is necessary to carry out the treatment work flow such as fine cutting, polishing to the rubbing surface of rock sample two, sample is processed
It is required that higher.Also, by the rock surface smooth even of polishing, roughness is smaller, and intrinsic fracture face often show as it is non-
The characteristic such as homogenieity is strong, roughness is big, the buffed surface in experiment differs greatly with intrinsic fracture seam surface state, causes experimental result
Distortion.
The content of the invention
The present invention provides a kind of rock frictional test experimental provision and method is applied to the measuring of rock in irregular shape, energy
The complex environment of situ of drilling well is adapted to, the accuracy of experimental result is improved, is easy to experimental data to gather the analysis with experimental result.
The present invention provides a kind of rock frictional test experimental provision, including rock fixation kit to be measured, force application assembly and
Detection components.
Rock fixation kit to be measured includes a sliding groove and at least one fixing groove, and sliding groove and fixing groove are used to place
Rock to be measured in the rock to be measured of identical quality, and rock to be measured and fixing groove in sliding groove has relative rubbing surface,
Wherein, rock to be measured is embedded in the curable material in sliding groove or fixing groove, and sliding groove can be slided relative to fixing groove.
Force application assembly includes normal pressure applying mechanism and tangential force applying mechanism, and normal pressure applying mechanism is used for
Apply pressure perpendicular to the glide direction of sliding groove, tangential force applying mechanism is used to apply on sliding groove along the slip of sliding groove
The active force in direction.
Detection components include displacement transducer and pulling force sensor, and displacement transducer is used to detect sliding groove relative to fixation
The displacement of groove, active force when pulling force sensor is used to detect that tangential force applying mechanism drives sliding groove to slide, with basis
The relative contact between the rock to be measured in rock to be measured and fixing groove in displacement, active force, pressure and sliding groove
Product obtains the coefficient of friction of rock to be measured and the frictional strength of rock to be measured.
The present invention also provides a kind of rock frictional test experimental technique, is applied in above-mentioned rock frictional test experimental provision, including：
Step S1：Rock to be measured is respectively arranged in sliding groove and fixing groove in rock fixation kit to be measured, the cunning
The rock described to be measured in rock described to be measured and the fixing groove in dynamic groove has relative rubbing surface, wherein, it is described to treat
Survey and screened in the landwaste that rock is the shale reservoir that drilling fluid carrying returns to bottom surface；
Apply pressure and the glide direction applying along the sliding groove in the glide direction perpendicular to the sliding groove respectively
Active force, to drive, the sliding groove is relative relative to the fixing groove to be slided；
Step S2：Detect that the sliding groove drives institute relative to the displacement and tangential force applying mechanism of the fixing groove
State active force when sliding groove is slided；
Step S3：According to the rock described to be measured in the displacement, the active force, the pressure and the sliding groove
Relative contact product between rock described to be measured in stone and the fixing groove obtain the rock to be measured coefficient of friction and
The frictional strength of the rock to be measured.
The rock frictional test experimental provision and method that the present invention is provided are embedded in solidifiable material by by rock in irregular shape
In material, simplify the experimentation of the irregular rock, save experimental cost；Set by by each component of experimental provision is integrated
Put, the experimental provision is adapted to the complex environment of situ of drilling well；By computer automation Real-time Collection experimental data, and together
Step analysis experimental result, improves the accuracy of experimental result, reduces the operation difficulty and complexity of experimentation.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
The accompanying drawing to be used needed for having technology description does one and simply introduces, it should be apparent that, drawings in the following description are this hairs
Some bright embodiments, for those of ordinary skill in the art, without having to pay creative labor, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the rock frictional test experimental provision that the embodiment of the present invention one is provided；
Fig. 2 is the structural representation of the sliding groove or fixing groove of the rock frictional test experimental provision that the embodiment of the present invention one is provided
Figure；
Fig. 3 is the structural representation of the pulling force room of the rock frictional test experimental provision that the embodiment of the present invention one is provided；
Fig. 4 is the front view of the levelling device of the rock frictional test experimental provision that the embodiment of the present invention one is provided；
Fig. 5 is the attached view of the levelling device of the rock frictional test experimental provision that the embodiment of the present invention one is provided.
Description of reference numerals：
10- rock fixation kits to be measured；20- force application assemblies；30- detection components；
40- data handling components；50- rocks to be measured；11- sliding grooves；
12- fixing grooves；13- curable materials；14- jackscrews；
21- normal pressure applying mechanisms；22- tangential force applying mechanisms；31- displacement transducers；
32- pulling force sensors；33- pulling force room；34- pulling force screw rods；
35- fixing bolts；36- levelling devices；41- computers；
42- data lines；221- traction motors；222- traction steel rope of cable；
361- hangs oneself from a beam；The 362- strong points；363- leveling serews；
364- leveling serews hole.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
Fig. 1 is the structural representation of the rock frictional test experimental provision that the embodiment of the present invention one is provided, and Fig. 2 is implementation of the present invention
The sliding groove or the structural representation of fixing groove of the rock frictional test experimental provision that example one is provided, Fig. 3 is that the embodiment of the present invention one is carried
The structural representation of the pulling force room of the rock frictional test experimental provision of confession, Fig. 4 is the rock frictional test reality that the embodiment of the present invention one is provided
The front view of the levelling device of experiment device, Fig. 5 is the levelling device of the rock frictional test experimental provision that the embodiment of the present invention one is provided
Attached view.
As shown in Figures 1 to 5, the embodiment of the present invention one provides a kind of rock frictional test experimental provision, including rock to be measured is consolidated
Determine component 10, force application assembly 20 and detection components 30.
Rock fixation kit 10 to be measured includes a fixing groove 12 of sliding groove 11 and at least one, sliding groove 11 and fixing groove
Rock to be measured in 12 rocks to be measured 50 for being used to place identical quality, and rock to be measured 50 and fixing groove 12 in sliding groove 11
Stone 50 has relative rubbing surface, wherein, rock to be measured 50 is embedded in the curable material 13 in sliding groove 11 or fixing groove 12
In, sliding groove 11 can be slided relative to fixing groove 12.
Force application assembly 20 includes normal pressure applying mechanism 21 and tangential force applying mechanism 22, normal pressure applying mechanism
21 are used to apply pressure in the glide direction perpendicular to sliding groove 11, and tangential force applying mechanism 22 is used to apply on sliding groove 11
Along the active force of the glide direction of sliding groove 11.
Detection components 30 include displacement transducer 31 and pulling force sensor 32, and displacement transducer 31 is used to detect sliding groove 11
Relative to the displacement of fixing groove 12, pulling force sensor 32 is used to detect that tangential force applying mechanism 22 drives sliding groove 11 to slide
When active force, with treating in the rock to be measured 50 and fixing groove 12 in displacement, active force, pressure and sliding groove 11
The relative contact product surveyed between rock 50 obtains the coefficient of friction of rock 50 to be measured and the frictional strength of rock to be measured 50.
It should be noted that the rock frictional test experimental provision will first be embedded in curable material 13 in experimentation
In rock to be measured 50 be fixed in fixing groove 12 and sliding groove 11, install fixing groove 12 and sliding groove 11, make the He of fixing groove 12
Rock to be measured 50 is relative in sliding groove 11 contacts.Rock to be measured 50 in irregular shape insertion can be coagulated in the embodiment of the present invention one
Gu in material 13, then when its surface is polished rock to be measured 50 face to be tested exposure outside, for sliding groove 11 in it is to be measured
Relative contact product between rock to be measured 50 in rock 50 and fixing groove 12 is easy to measure or is calculated, can will be exposed to be measured
Examination face is polished into regular shape, such as circular or square, further according to the rocks to be measured 50 for measuring or calculating two is slided relatively
Between relative contact product.Avoid rock to be measured 50 of directly polishing so that the surface texture structure of rock to be measured 50 changes,
Cause final experimental result distortion.
Drive sliding groove 11 to be relatively fixed groove 12 using the tangential force applying mechanism 22 in force application assembly 20 to move,
So that producing relative slip between the sliding groove 11 and fixing groove 12, the rock to be measured in sliding groove 11 and fixing groove 12 is fixed on
Also relative slip produces friction under its drive between 50, and the concrete numerical value of the active force is read by pulling force sensor 32, leads to
Cross the concrete numerical value that displacement transducer 31 can read the displacement of sliding groove 11.Normal pressure in force application assembly 20 applies
Applying stress on the moving direction of sliding groove 11, direct stress applying mechanism can be counterweight for mechanism 21, therefore stress
Concrete numerical value can be directly obtained by reading.After obtaining relative contact product, displacement, active force and pressure concrete numerical value,
Can according to following coefficient of friction formula (1) and frictional strength formula (2) calculate rock to be measured 50 respectively between coefficient of friction and
Frictional strength.
Wherein, μ is coefficient of friction；T is the active force that tangential force applying mechanism 22 drives sliding groove 11 to slide, and unit is N；
FNFor the stress that normal pressure applying mechanism 21 applies, unit is N.
Wherein, σ is frictional strength, and unit is Pa；T is the effect that tangential force applying mechanism 22 drives sliding groove 11 to slide
Power, unit is N；S is the relative contact between the rock to be measured 50 in rock to be measured 50 and fixing groove 12 in sliding groove 11
Product, unit is m2。
It should be noted that also including configuration in rock to be measured in the rock frictional test experimental provision of the offer of the embodiment of the present invention one
The experimental bench (not marked in figure) of stone fixation kit 10, force application assembly 20 and the bottom of detection components 30, the experimental bench table
Face is smooth, places and fixes beneficial to each component.Damping device is additionally provided with experimental bench bottom, is existed for slowing down sliding groove 11
The vibration produced in moving process.Therefore the experimental bench can ensure that rock frictional test experimental provision can also put down in complicated situ of drilling well
Steady operating, improves the precision of experimental result.
Specifically, the rock frictional test experimental provision also includes data handling component 40, data handling component 40 and detection group
Part 30 has electrical connection, and data handling component 40 is used for displacement, detection components 30 according to detected by detection components 30
The friction of detected active force, the pressure of the applying of normal pressure applying mechanism 21 and relative contact product acquisition rock 50 to be measured
The frictional strength of coefficient and rock to be measured 50.
It should be noted that the rock frictional test experimental provision that the embodiment of the present invention one is provided is received by data handling component 40
Collection, record and treatment experimental data, adapt to situ of drilling well complex environment, it is ensured that the precision of experimental data.
Alternatively, rock fixation kit 10 to be measured includes a sliding groove 11 and a fixing groove 12, sliding groove 11 and solid
The notch for determining groove 12 is staggered relatively, so that fixed in the surface of rock to be measured 50 fixed in sliding groove 11 and fixing groove 12 treat
The surface for surveying rock 50 contacts with each other.
It should be noted that rock frictional test experiment may include unilateral shearing friction and bilateral shearing friction, two kinds of friction shapes
Formula characterizes the generation shearing friction process between rock in different geological environments.Wherein unilateral shearing friction can be by be measured
One sliding groove 11 and a fixing groove 12, the rock to be measured in sliding groove 11 and fixing groove 12 are set in rock fixation kit 10
50 only sides contact with each other, therefore characterize the unilateral process that shearing friction occurs after formation rock is under pressure.
Alternatively, rock fixation kit 10 to be measured includes a sliding groove 11 and two fixing grooves 12, the groove of sliding groove 11
Bottom have and sliding groove 11 the opening that is oppositely arranged of notch, and rock to be measured 50 in sliding groove 11 has and is exposed at respectively
Both side surface outside notch and opening, fixing groove 12 is separately positioned on the opposite sides of sliding groove 11, the notch of sliding groove 11
It is relative with the notch of fixing groove 12 and opening respectively so that the both side surface of rock to be measured 50 in sliding groove 11 respectively with fixation
The surface of the rock to be measured 50 in groove 12 contacts with each other.
It should be noted that except above-mentioned unilateral shearing friction experiment model, the present embodiment also provides bilateral shearing and rubs
Experiment model is wiped, by setting a sliding groove 11 and two fixing grooves 12, sliding groove 11 in rock fixation kit 10 to be measured
Both sides offer notch and opening respectively, the both side surface of rock to be measured 50 in sliding groove 11 respectively with positioned at 11 liang of sliding groove
The surface of rock to be measured 50 in the fixing groove 12 of side is contacted with each other, and direct stress applying mechanism is subject in rock fixation kit 10 to be measured
The stress of applying, while the sliding groove 11 between two fixing grooves 12 is moved, the two of rock to be measured 50 in fixing groove 12
Side surface rubs with the surface of rock to be measured 50 in fixing groove 12, for simulating surveys after rock is under pressure, bilateral hair
The process of raw shearing friction.
Further, tangential force applying mechanism 22 includes traction motor 221 and traction steel rope of cable 222, traction steel rope of cable 222 1
End is connected with the output shaft of traction motor 221, and the other end of traction steel rope of cable 222 is fixedly connected with sliding groove 11.
It should be noted that output shaft connection traction steel rope of cable 222 of the tangential force applying mechanism 22 for traction motor 221,
The other end of traction steel rope of cable 222 is fixedly connected with sliding groove 11, therefore traction motor 221 can drive sliding groove 11 to move.
The traction motor 221 can select fine motion motor, servo hydraulic machine or air pressure motor etc., can be the mobile offer of sliding groove 11
Power, the embodiment of the present invention is not limited to this.Specifically, be able to can be led to according to experiment needs, the traction motor 221
Cross and manually control, or be connected with control device, be controlled by setting related experiment program.
Specifically, data handling component 40 includes computer 41 and for connecting computer 41 and displacement transducer 31 respectively
With the data line 42 of pulling force sensor 32；Computer 41 is used to store displacement and active force, and according to displacement,
Active force, pressure and relative contact product calculate the frictional strength of the coefficient of friction and rock to be measured 50 that obtain rock 50 to be measured.
It should be noted that the rock frictional test experimental provision carries out Data Collection, record and analyzes, meter by computer 41
Calculation machine 41 is electrically connected by data transmission interface of the data line 42 respectively with displacement transducer 31 and pulling force sensor 32, meter
Calculation machine 41 receives and collects the displacement of sliding groove 11 and drive for being detected by displacement transducer 31 and pulling force sensor 32 respectively
Sliding groove 11 movement active force, while according to direct stress applying mechanism apply stress and measurement and be calculated it is to be measured
The relative contact of rock 50 accumulates four data, according to above-mentioned coefficient of friction computing formula (1) and frictional strength computing formula (2)
The coefficient of friction and frictional strength of rock to be measured 50 are calculated respectively.Correspondingly, it is configured with computer 41 for Data Collection, number
According to storage and data processing module.
Specifically, as shown in Figure 4 and Figure 5, detection components 30 also include pulling force room 33, pulling force sensor 32 passes through pulling force spiral shell
Bar 34 and fixing bolt 35 are arranged in pulling force room 33, and pulling force screw rod 34 and fixing bolt 35 are individually fixed in pulling force sensor 32
Opposite end, pulling force screw rod 34 is connected with traction steel rope of cable 222.
Specifically, pulling force room 33 also includes levelling device 36, levelling device 36 is arranged on the bottom of pulling force sensor 32, is used for
Regulation and elimination pulling force sensor 32 inclination angle in the horizontal direction；
Levelling device 36 includes at least two overarms 361, and at least two overarms 361 are fixed on the bottom of pulling force room 33 side by side,
And 361 in the vertical directions of overarm is Height Adjustable, at least one strong point 362, pull sensing are worn in every overarm 361
Device 32 is placed on the strong point 362；
Every 361 end in the vertical directions of overarm are provided with leveling serew 363, to adjust 361 in the vertical directions of overarm
Height.
It should be noted that the pulling force sensor 32 in detection components 30 is arranged in pulling force room 33, respectively by fixation
Bolt 35 and pulling force screw rod 34 are fixed on its two ends, and pulling force screw rod 34 is connected with traction steel rope of cable 222, for being passed to be connected to pulling force
The sliding groove 11 of the other end of sensor 32 provides power.Wherein levelling device 36, leveling are additionally provided with the bottom of pulling force sensor 32
Device 36 is made up of at least two overarms 361 and the strong point 362 being located in overarm 361, and pulling force sensor 32 is placed in support
On point 362.The end of overarm 361 is located in the leveling serew hole 364 of the side wall of pulling force room 33, and in the vertical direction is provided with leveling
Screw 363, leveling serew 363 is connected to 361 ends of overarm, by adjust the height of the in the vertical direction of leveling serew 363 from
And adjust the height of 361 ends of overarm.The leveling serew 363 of the side of pulling force room 33 is illustrate only in Fig. 5, it is relative in pulling force room 33
Side also is provided with identical leveling serew 363, adjusts the height of its vertical direction from two ends of overarm 361 respectively, eliminates
The inclination angle in the horizontal direction of pulling force sensor 32, prevents pulling force sensor 32 from detection error is caused due to inclination.
Optionally, curable material 13 be epoxy resin, be embedded with rock to be measured 50 epoxy resin edge shape with
The shape of sliding groove 11 or fixing groove 12 matches, and is provided with sliding groove 11 or fixing groove 12 and can hold out against in asphalt mixtures modified by epoxy resin
On fat, so that epoxy resin and sliding groove 11 or the relatively-stationary jackscrew 14 of fixing groove 12.
It should be noted that the rock sample size of the rock frictional test experimental provision of the present embodiment offer is smaller, general choosing
With the rock sample of 2-5mm.Rock to be measured 50 in irregular shape is fixed by curable material 13, then rock 50 to be measured will be embedded in
Curable material 13 is inserted in sliding groove 11 or fixing groove 12, and the curable material 13 is held out against using jackscrew 14, prevent its
Loosened in sliding process.
Wherein, curable material 13 is thermosets, can select phenolic resin, epoxy resin or organic siliconresin, gathers
Urethane etc., the present embodiment is not limited to this.This kind of material turns into liquid after heating for the first time, and rock to be measured 50 is put
After entering, thermosets is stood and is solidified into the insoluble solid matter not melted, and rock to be measured 50 can be completed by this kind of material
It is fixed.
The rock frictional test experimental provision that the embodiment of the present invention one is provided is embedded in solidifiable by by rock in irregular shape
In material 13, simplify the experimentation of the irregular rock, save experimental cost；By the way that each component of experimental provision is integrated
Change and set, the experimental provision is adapted to the complex environment of situ of drilling well；Real-time Collection is automated by computer 41 and tests number
According to, and Synchronization Analysis experimental result, the accuracy of experimental result is improved, reduce the operation difficulty and complexity of experimentation.
The embodiment of the present invention two also provides a kind of rock frictional test experimental technique, is applied to above-mentioned rock frictional test experimental provision
In, including：
Step S1：Rock to be measured 50 is respectively arranged in sliding groove 11 and fixing groove in rock fixation kit 10 to be measured
12, the rock described to be measured 50 in rock described to be measured 50 and the fixing groove 12 in the sliding groove 11 has relative rubbing
Wiping face, wherein, the rock to be measured 50 be drilling fluid carry return to bottom surface shale reservoir landwaste in screened；
Apply pressure and the glide direction along the sliding groove 11 in the glide direction perpendicular to the sliding groove 11 respectively
Apply active force, the sliding groove 11 is relative relative to the fixing groove 12 to be slided to drive；
Step S2：Detect displacement and tangential force applying mechanism 22 of the sliding groove 11 relative to the fixing groove 12
Active force when driving the sliding groove 11 to slide；
Step S3：It is described to be measured in the displacement, the active force, the pressure and the sliding groove 11
Relative contact product between rock described to be measured 50 in rock 50 and the fixing groove 12 obtains the rock to be measured 50
The frictional strength of coefficient of friction and the rock to be measured 50.
It should be noted that the embodiment of the present invention two provides a kind of rock frictional test experimental technique, will be taken in drilling fluid first
Rock to be measured 50 is fixed to sliding groove 11 or fixed by the landwaste screening of band as rock to be measured 50 by curable material 13
In groove 12.Fixing groove 12 and sliding groove 11 are installed, can be according to experiment needs, selection one side shearing friction and bilateral shearing friction reality
Test pattern.Start force application assembly 20, be that sliding groove 11 is moved relative to fixing groove 12, produced between rock to be measured 50
Sliding friction, while detection components 30 are detected, obtains the displacement of sliding groove 11, drives the active force of sliding groove 11, just
Between the rock to be measured 50 in rock to be measured 50 and fixing groove 12 in the stress and sliding groove 11 of the applying of stress applying mechanism
Relative contact product, according to coefficient of friction computing formula (1) and frictional strength computing formula (2) calculating, obtain rock to be measured
50 frictional strength and coefficient of friction, completes experimentation.
The rock frictional test experimental technique that the embodiment of the present invention two is provided is embedded in solidifiable by by rock in irregular shape
In material 13, simplify the experimentation of the irregular rock, save experimental cost；By the way that each component of experimental provision is integrated
Change and set, the experimental provision is adapted to the complex environment of situ of drilling well；Real-time Collection is automated by computer 41 and tests number
According to, and Synchronization Analysis experimental result, the accuracy of experimental result is improved, reduce the operation difficulty and complexity of experimentation.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, performs the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
Pipe has been described in detail with reference to foregoing embodiments to the present invention, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (10)
1. a kind of rock frictional test experimental provision, it is characterised in that including rock fixation kit to be measured, force application assembly and inspection
Survey component；
The rock fixation kit to be measured includes a sliding groove and at least one fixing groove, the sliding groove and the fixing groove
It is used to place the rock to be measured of identical quality, and it is described in rock described to be measured and the fixing groove in the sliding groove
Rock to be measured has relative rubbing surface, wherein, the rock to be measured be embedded in the sliding groove or the fixing groove can
In solidification material, the sliding groove can be slided relative to the fixing groove；
The force application assembly includes normal pressure applying mechanism and tangential force applying mechanism, and the normal pressure applying mechanism is used
In pressure is applied in the glide direction perpendicular to the sliding groove, the tangential force applying mechanism is used to be applied on the sliding groove
Plus the active force of the glide direction along the sliding groove；
The detection components include displacement transducer and pulling force sensor, and institute's displacement sensors are used to detect the sliding groove phase
For the displacement of the fixing groove, the pulling force sensor is used to detect that the tangential force applying mechanism drives the slip
Active force when groove is slided, treats with according in the displacement, the active force, the pressure and the sliding groove
Relative contact product between the rock described to be measured surveyed in rock and the fixing groove obtains the friction system of the rock to be measured
The frictional strength of number and the rock to be measured.
2. rock frictional test experimental provision according to claim 1, it is characterised in that described also including data handling component
Data handling component and the detection components have electrical connection, and the data handling component is used to be examined according to the detection components
What the active force, the normal pressure applying mechanism detected by the displacement that measures, the detection components applied
The pressure and relative contact product obtain the coefficient of friction of the rock to be measured and the frictional strength of the rock to be measured.
3. rock frictional test experimental provision according to claim 1 and 2, it is characterised in that the rock fixation kit to be measured
Including a sliding groove and a fixing groove, the notch of the sliding groove and the fixing groove is staggered relatively, so that
The surface phase of fixed rock described to be measured in the surface of the rock described to be measured fixed in the sliding groove and the fixing groove
Mutually contact.
4. rock frictional test experimental provision according to claim 1 and 2, it is characterised in that the rock fixation kit to be measured
Including a sliding groove and two fixing grooves, the bottom land of the sliding groove is with relative with the notch of the sliding groove
The opening of setting, and rock described to be measured in the sliding groove has and is exposed at respectively outside the notch and the opening
Both side surface, the fixing groove is separately positioned on the opposite sides of the sliding groove, the notch of the sliding groove respectively with institute
The notch and the opening for stating fixing groove are relative, so that the both side surface difference of the rock described to be measured in the sliding groove
Surface with the rock described to be measured in the fixing groove contacts with each other.
5. rock frictional test experimental provision according to claim 1 and 2, it is characterised in that the tangential force applying mechanism bag
Traction motor and traction steel rope of cable are included, described traction steel rope of cable one end is connected with the output shaft of the traction motor, the traction
The other end of steel cable is fixedly connected with the sliding groove.
6. rock frictional test experimental provision according to claim 2, it is characterised in that the data handling component includes calculating
Machine and the data line for connecting the computer and institute's displacement sensors and the pulling force sensor respectively；The meter
Calculation machine is used to store the displacement and the active force, and according to the displacement, the active force, the pressure and
The relative contact product calculates the frictional strength of the coefficient of friction and the rock to be measured that obtain the rock to be measured.
7. rock frictional test experimental provision according to claim 5, it is characterised in that the detection components also include pulling force
Room, the pulling force sensor is arranged in the pulling force room by pulling force screw rod and fixing bolt, the pulling force screw rod and described
Fixing bolt is individually fixed in the opposite end of the pulling force sensor, and the pulling force screw rod is connected with the traction steel rope of cable.
8. rock frictional test experimental provision according to claim 7, it is characterised in that the pulling force room also fills including leveling
Put, the levelling device is arranged on the pulling force sensor bottom, for adjusting and eliminating the pulling force sensor in level side
Upward inclination angle；
The levelling device includes at least two overarms, and at least two overarms are fixed on pulling force room bottom side by side
Portion, and the Height Adjustable of in the vertical direction of hanging oneself from a beam, wear at least one strong point, the drawing in the every overarm
Force snesor is placed on the strong point；
Every overarm end in the vertical direction is provided with leveling serew, to adjust the height of the overarm in the vertical direction
Degree.
9. rock frictional test experimental provision according to claim 1, it is characterised in that the curable material is asphalt mixtures modified by epoxy resin
Fat, is embedded with the edge shape and the sliding groove or the shape of the fixing groove of the epoxy resin of the rock to be measured
Match, and be provided with the sliding groove or the fixing groove and can hold out against on the epoxy resin, so that the epoxy
Resin and the sliding groove or the relatively-stationary jackscrew of the fixing groove.
10. a kind of rock frictional test experimental technique, is applied to rock frictional test experimental provision as claimed in any one of claims 1-9 wherein
In, it is characterised in that including：
Step S1：Rock to be measured is respectively arranged in sliding groove and fixing groove in rock fixation kit to be measured, the sliding groove
In rock described to be measured and the fixing groove in rock described to be measured there is relative rubbing surface, wherein, the rock to be measured
Stone be drilling fluid carry return to bottom surface shale reservoir landwaste in screened；
Apply pressure and the glide direction applying effect along the sliding groove in the glide direction perpendicular to the sliding groove respectively
Power, to drive, the sliding groove is relative relative to the fixing groove to be slided；
Step S2：Detect that the sliding groove drives the cunning relative to the displacement and tangential force applying mechanism of the fixing groove
Active force when dynamic groove is slided；
Step S3：Rock described to be measured in the displacement, the active force, the pressure and the sliding groove and
Relative contact product between rock described to be measured in the fixing groove obtains the coefficient of friction of the rock to be measured and described
The frictional strength of rock to be measured.
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| CN110907268A (en) * | 2019-12-31 | 2020-03-24 | 贵州理工学院 | Rock shear strength tester |
| CN113533196A (en) * | 2021-06-25 | 2021-10-22 | 重庆大学 | High-precision direct test system and test method for measuring friction coefficient of complex contact surface |
| CN114459991A (en) * | 2022-04-11 | 2022-05-10 | 中国地质大学（武汉） | Device and method for in-situ measurement of friction coefficient of artificial rock wall inclined plane |
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