CN106918552B - Rock frictional test experimental provision and method - Google Patents
Rock frictional test experimental provision and method Download PDFInfo
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- CN106918552B CN106918552B CN201710134972.3A CN201710134972A CN106918552B CN 106918552 B CN106918552 B CN 106918552B CN 201710134972 A CN201710134972 A CN 201710134972A CN 106918552 B CN106918552 B CN 106918552B
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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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- Automation & Control Theory (AREA)
- Engineering & Computer Science (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
It includes rock fixation kit, force application assembly and detection components to be measured that the present invention, which provides a kind of rock frictional test experimental provision and method, the rock frictional test experimental provision,.Rock fixation kit to be measured includes sliding groove and fixing groove, and the rock to be measured in sliding groove and the rock to be measured in fixing groove have opposite 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 of the glide direction along sliding groove on sliding groove.Moving distance of the displacement sensor detection sliding groove relative to fixing groove in detection components, tension sensor detects active force when tangential force applying mechanism drives sliding groove sliding, to obtain the coefficient of friction and frictional strength of rock to be measured.Therefore, rock frictional test experimental provision provided by the invention and method are suitable for 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 sides
Method.
Background technique
The Efficient Development of unconventional oil and gas needs to carry out reservoir reconstruction, has splitting for high flow conductivity to be formed in reservoir
Seam system, to obtain industrial gas.Unlike conventional gas and oil reservoir, reservoir day must utmostly be activated by obtaining high yield
Simultaneously shearing slip occurs for right crack, realizes being mutually communicated between intrinsic fracture.Shale reservoir crack stitch face coefficient of friction and
Its frictional strength is one of the governing factor that intrinsic fracture shearing slip forms the seam net being mutually communicated.It can for intrinsic fracture
Shearing slip occurs, there are no complete and practical evaluation methods both at home and abroad at present.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, it utilizes
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
There are no evaluating apparatus and evaluation method that the function can be achieved, a set of such device of design is very necessary, to probe into page
The condition of shearing slip occurs for rock reservoir, provides theoretical foundation for reservoir reconstruction engineer application.
Currently, being usually used in measuring frictional strength and the method for coefficient of friction being staight scissors method.After rock sample is processed, shearing
The rubbing surface of sliding passes through manual polishing, until guaranteeing in the upper and lower experiment box of merging to flour milling exposure after smooth.Then will
Upper and lower experiment box exposure part is perfectly aligned, is placed on hydraulic press, lower experiment box is fixed.When experiment starts, upper experiment box is just
Top applies normal pressure, applies tangential force laterally through servo hydraulic machine.By changing normal pressure, record tangential during this
Power and lateral displacement, frictional strength when different normal pressure that you can get it.
However it is primarily present following drawback in actual continuous mode in above-mentioned staight scissors method: being rubbed using the program
Intensity experiment is wiped, needs to carry out two rubbing surface of rock sample the processing processing flow such as fine cutting, polishing, sample is processed
It is more demanding.Also, by polishing rock surface smooth even, roughness is smaller, and intrinsic fracture face often show as it is non-
The characteristics such as homogenieity is strong, roughness is big, the buffed surface in experiment differ greatly with intrinsic fracture seam surface state, cause experimental result
Distortion.
Summary of the invention
The present invention provides a kind of rock frictional test experimental provision and method is suitable for the measuring of rock in irregular shape, energy
The complex environment for adapting to situ of drilling well, improves the accuracy of experimental result, convenient for the analysis of experimental data acquisition and 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 put
The rock to be measured of identical quality is set, and the rock to be measured in sliding groove and the rock to be measured in fixing groove have opposite friction
Face, wherein rock to be measured is embedded in the curable material in sliding groove or fixing groove, and sliding groove can be sliding relative to fixing groove
It is dynamic.
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 on sliding groove for applying the sliding along sliding groove
The active force in direction.
Detection components include displacement sensor and tension sensor, and displacement sensor is for detecting sliding groove relative to fixation
The moving distance of slot, tension sensor is used to detect active force when tangential force applying mechanism drives sliding groove sliding, with basis
The relative contact between rock to be measured in rock to be measured in moving distance, active force, pressure and sliding groove and fixing 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 methods, applied in above-mentioned rock frictional test experimental provision, comprising:
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 to be measured in the rock to be measured and the fixing groove in dynamic slot has opposite rubbing surface, wherein it is described to
It surveys in the landwaste that rock is the shale reservoir that drilling fluid carrying returns to bottom surface and is screened；
Apply pressure in the glide direction perpendicular to the sliding groove respectively and applies along the glide direction of the sliding groove
Active force, to drive the sliding groove relative to the opposite sliding of the fixing groove；
Step S2: the moving distance and tangential force applying mechanism for detecting the sliding groove relative to the fixing groove drive institute
State active force when sliding groove sliding；
Step S3: according to the rock to be measured in the moving distance, the active force, the pressure and the sliding groove
Relative contact product between the rock 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.
Rock frictional test experimental provision provided by the invention and method are by being embedded in solidifiable material for rock in irregular shape
In material, simplify the experimentation of the irregular rock, saves experimental cost；By setting the various components of experimental provision are integrated
It sets, the experimental provision is made to adapt to the complex environment of situ of drilling well；Experimental data is acquired in real time by computer automation, and same
Step analysis experimental result, improves the accuracy of experimental result, reduces the operation difficulty and complexity of experimentation.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to do one simply to introduce, it should be apparent that, the accompanying drawings in the following description is this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram for the rock frictional test experimental provision that the embodiment of the present invention one provides；
Fig. 2 is the sliding groove for the rock frictional test experimental provision that the embodiment of the present invention one provides or the structural representation of fixing groove
Figure；
Fig. 3 is the structural schematic diagram of the pulling force room for the rock frictional test experimental provision that the embodiment of the present invention one provides；
Fig. 4 is the main view of the levelling device for the rock frictional test experimental provision that the embodiment of the present invention one provides；
Fig. 5 is the attached view of the levelling device for the rock frictional test experimental provision that the embodiment of the present invention one provides.
Description of symbols:
10- rock fixation kit to be measured；20- force application assembly；30- detection components；
40- data handling component；50- rock to be measured；11- sliding groove；
12- fixing groove；13- curable material；14- jackscrew；
21- normal pressure applying mechanism；22- tangential force applying mechanism；31- displacement sensor；
32- tension sensor；33- pulling force room；34- pulling force screw rod；
35- fixing bolt；36- levelling device；41- computer；
42- data line；221- traction motor；222- traction steel rope of cable；
361- overarm；362- supporting point；363- leveling serew；
364- leveling serew hole.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Fig. 1 is the structural schematic diagram for the rock frictional test experimental provision that the embodiment of the present invention one provides, and Fig. 2 is implementation of the present invention
The sliding groove for the rock frictional test experimental provision that example one provides or the structural schematic diagram of fixing groove, Fig. 3 is that the embodiment of the present invention one mentions
The structural schematic diagram of the pulling force room of the rock frictional test experimental provision of confession, Fig. 4 are that the rock frictional test that the embodiment of the present invention one provides is real
The main view of the levelling device of experiment device, Fig. 5 are the levelling devices for the rock frictional test experimental provision that the embodiment of the present invention one provides
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 sliding groove 11 and at least one fixing groove 12, sliding groove 11 and fixing groove
12 are used to place the rock to be measured 50 of identical quality, and the rock to be measured in the rock to be measured 50 and fixing groove 12 in sliding groove 11
Stone 50 has opposite rubbing surface, wherein curable material 13 of the rock 50 to be measured 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 for applying pressure in the glide direction perpendicular to sliding groove 11, and tangential force applying mechanism 22 on sliding groove 11 for applying
Along the active force of the glide direction of sliding groove 11.
Detection components 30 include displacement sensor 31 and tension sensor 32, and displacement sensor 31 is for detecting sliding groove 11
Relative to the moving distance of fixing groove 12, tension sensor 32 drives sliding groove 11 to slide for detecting tangential force applying mechanism 22
When active force, with according in the rock to be measured 50 and fixing groove 12 in moving distance, active force, pressure and sliding groove 11 to
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 is during the experiment, it will first be embedded in curable material 13
In rock to be measured 50 be fixed in fixing groove 12 and sliding groove 11, fixing groove 12 and sliding groove 11 are installed, 12 He of fixing groove is made
The opposite contact of rock 50 to be measured in sliding groove 11.The insertion of rock 50 to be measured in irregular shape can be coagulated in the embodiment of the present invention one
Gu in material 13, then when its surface is polished the face to be tested of rock 50 to be measured be exposed to it is outer, in order to be measured in sliding groove 11
Relative contact product between rock to be measured 50 in rock 50 and fixing groove 12 convenient for measurement or calculates, can will be exposed to be measured
Examination face is polished into regular shape, such as round or square, further according to the rock to be measured 50 for measuring or calculating two opposite slidings
Between relative contact product.Rock 50 to be measured of directly polishing is avoided, so that 50 surface texture structure of rock to be measured changes,
Final experimental result is caused to be distorted.
Drive sliding groove 11 mobile relative to fixed slot 12 using the tangential force applying mechanism 22 in force application assembly 20,
So that being produced relative sliding between the sliding groove 11 and fixing groove 12, the rock to be measured being fixed in sliding groove 11 and fixing groove 12
Also opposite sliding generates friction under its drive between 50, and the specific value of the active force is read by tension sensor 32, leads to
Crossing displacement sensor 31 can be read the specific value of 11 moving distance of sliding groove.Normal pressure in force application assembly 20 applies
Mechanism 21 applies stress on perpendicular to 11 moving direction of sliding groove, and direct stress applying mechanism can be counterweight, therefore stress
Specific value can be directly obtained by reading.After obtaining relative contact product, moving distance, active force and pressure specific value,
Can be calculated separately according to following coefficient of friction formula (1) and frictional strength formula (2) coefficient of friction between rock 50 to be measured 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, unit N；
FNFor the stress that normal pressure applying mechanism 21 applies, unit N.
Wherein, σ is frictional strength, unit Pa；T is the effect that tangential force applying mechanism 22 drives sliding groove 11 to slide
Power, unit 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 m2。
It should be noted that further including configuration in the rock frictional test experimental provision that the embodiment of the present invention one provides in rock to be measured
The experimental bench (not marked in figure) of 30 bottom of stone fixation kit 10, force application assembly 20 and detection components, the experimental bench table
Face is smooth, is conducive to various components and places and fix.It is additionally provided with damping device in experimental bench bottom, is existed for slowing down sliding groove 11
The vibration generated in moving process.Therefore the experimental bench can guarantee that rock frictional test experimental provision can also be put down in complicated situ of drilling well
Steady operating, improves the precision of experimental result.
Specifically, the rock frictional test experimental provision further 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 the moving distance according to detected by detection components 30, detection components 30
The friction of detected active force, the pressure that normal pressure applying mechanism 21 applies 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 provides is received by data handling component 40
Collection, record and processing experimental data, adapt to situ of drilling well complex environment, ensure that the precision of experimental data.
Optionally, 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 slot 12 is staggered relatively so that in the surface of rock to be measured 50 fixed in sliding groove 11 and fixing groove 12 it is fixed to
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 in different geological environments between rock.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.
Optionally, rock fixation kit 10 to be measured includes a sliding groove 11 and two fixing grooves 12, the slot of sliding groove 11
Bottom has and the opening that is oppositely arranged of notch of sliding groove 11, and the rock to be measured 50 being located in sliding groove 11 has and is exposed at respectively
Both side surface except notch and opening, fixing groove 12 are separately positioned on the opposite sides of sliding groove 11, the notch of sliding groove 11
It is opposite with the notch of fixing groove 12 and opening respectively so that the both side surface of the rock to be measured 50 in sliding groove 11 respectively with fixation
The surface of rock to be measured 50 in slot 12 contacts with each other.
It should be noted that the present embodiment also provides bilateral shearing and rubs in addition to above-mentioned unilateral shearing friction experiment model
Experiment model is wiped, by the way that a sliding groove 11 and two fixing grooves 12, sliding groove 11 are arranged in rock fixation kit 10 to be measured
Two sides offer notch and opening respectively, 50 both side surface of rock to be measured in sliding groove 11 respectively and be located at 11 liang of sliding groove
50 surface of rock to be measured in the fixing groove 12 of side contacts with each other, in rock fixation kit 10 to be measured by direct stress applying mechanism
The stress of application, while the sliding groove 11 being located between two fixing grooves 12 is mobile, the two of rock 50 to be measured in fixing groove 12
Side surface rubs with 50 surface of rock to be measured 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
The output axis connection at end and traction motor 221, the other end of traction steel rope of cable 222 are fixedly connected with sliding groove 11.
It should be noted that tangential force applying mechanism 22 is the output axis connection traction steel rope of cable 222 of traction motor 221,
222 other end of traction steel rope of cable is fixedly connected with sliding groove 11, therefore traction motor 221 can drive sliding groove 11 to be moved.
Fine motion motor, servo hydraulic machine or air pressure motor etc. can be selected in the traction motor 221, can provide for the movement of sliding groove 11
Power, the embodiment of the present invention are not limited this.Specifically, can be led to according to experiment needs, the traction motor 221
It crosses and manually manually controls, or connect with control device, controlled by setting related experiment program.
Specifically, data handling component 40 is including computer 41 and for being separately connected computer 41 and displacement sensor 31
With the data line 42 of tension sensor 32；Computer 41 for storing moving distance and active force, and according to moving distance,
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 analysis, meter by computer 41
Calculation machine 41 is electrically connected with the data transmission interface of displacement sensor 31 and tension sensor 32 respectively by data line 42, is counted
Calculation machine 41 receives and collects 11 moving distance of sliding groove and drive that are detected respectively by displacement sensor 31 and tension sensor 32
The mobile active force of sliding groove 11, while according to the stress of direct stress applying mechanism application and measurement and being calculated to be measured
50 relative contact of rock accumulates four data, according to above-mentioned coefficient of friction calculation formula (1) and frictional strength calculation formula (2)
Calculate separately the coefficient of friction and frictional strength of rock 50 to be measured.Correspondingly, it is counted in computer 41 configured with data collection is used for
According to storage and data processing module.
Specifically, as shown in Figure 4 and Figure 5, detection components 30 further include pulling force room 33, tension sensor 32 passes through pulling force spiral shell
Bar 34 and fixing bolt 35 are mounted in pulling force room 33, and pulling force screw rod 34 and fixing bolt 35 are individually fixed in tension sensor 32
Opposite end, pulling force screw rod 34 connect with traction steel rope of cable 222.
Specifically, pulling force room 33 further includes levelling device 36, levelling device 36 is mounted on 32 bottom of tension sensor, is used for
Adjust and eliminate the inclination angle of tension sensor 32 in the horizontal direction；
Levelling device 36 includes at least two overarms 361, and at least two overarms 361 are fixed on 33 bottom of pulling force room side by side,
And 361 in the vertical direction height-adjustable of overarm, at least one supporting point 362, pull sensing are worn in every overarm 361
Device 32 is placed on supporting point 362；
Every 361 ends of overarm are equipped with leveling serew 363 in the vertical direction, to adjust overarm 361 in the vertical direction
Height.
It should be noted that the tension sensor 32 in detection components 30 is set in pulling force room 33, pass through fixation respectively
Bolt 35 and pulling force screw rod 34 are fixed on its both ends, and pulling force screw rod 34 is connect with traction steel rope of cable 222, for passing to be connected to pulling force
The sliding groove 11 of 32 other end of sensor provides power.It wherein is additionally provided with levelling device 36 in the bottom of tension sensor 32, is leveled
Device 36 is made of at least two overarms 361 and the supporting point 362 being threaded through in overarm 361, and tension sensor 32 is placed in support
On point 362.The end of overarm 361 is threaded through in the leveling serew hole 364 of 33 side wall of pulling force room, is equipped with leveling in the vertical direction
Screw 363, leveling serew 363 are connected to 361 ends of overarm, by adjust the height in the vertical direction of leveling serew 363 from
And adjust the height of 361 ends of overarm.The leveling serew 363 that 33 side of pulling force room is illustrated only in Fig. 5 is opposite 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 of tension sensor 32 in the horizontal direction, prevents tension sensor 32 from causing detection error due to inclination.
Optionally, curable material 13 is epoxy resin, be embedded with the edge shape of the epoxy resin of rock 50 to be measured with
Perhaps the shape of fixing groove 12 matches and is provided in sliding groove 11 or fixing groove 12 and can hold out against in asphalt mixtures modified by epoxy resin sliding groove 11
On rouge, 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 rock frictional test experimental provision provided in this embodiment is smaller, it is general to select
With the rock sample of 2-5mm.It is by curable material 13 that rock 50 to be measured in irregular shape is fixed, then rock 50 to be measured will be embedded in
Curable material 13 is placed in sliding groove 11 or fixing groove 12, holds out against the curable material 13 using jackscrew 14, prevent its
It is loosened in sliding process.
Wherein, curable material 13 is thermosetting material, and phenolic resin can be selected, epoxy resin or silicone resin, gather
Urethane etc., the present embodiment is not limited this.Such material becomes liquid after heating for the first time, and rock 50 to be measured is set
After entering, thermosetting material standing is solidified into the insoluble solid matter not melted, and passes through the achievable rock 50 to be measured of such material
It is fixed.
The rock frictional test experimental provision that the embodiment of the present invention one provides is by being embedded in solidifiable for rock in irregular shape
In material 13, simplify the experimentation of the irregular rock, saves experimental cost；By the way that the various components of experimental provision are integrated
Change setting, the experimental provision is made to adapt to the complex environment of situ of drilling well；The number of acquisition experiment in real time is automated by computer 41
According to, and Synchronization Analysis experimental result, the accuracy of experimental result is improved, the operation difficulty and complexity of experimentation are reduced.
The embodiment of the present invention two also provides a kind of rock frictional test experimental method, applied to above-mentioned rock frictional test experimental provision
In, comprising:
Step S1: the sliding groove 11 and fixing groove rock 50 to be measured being respectively arranged in rock fixation kit 10 to be measured
12, the rock 50 to be measured in the rock 50 to be measured and the fixing groove 12 in the sliding groove 11 has opposite rub
Wiping face, wherein the rock 50 to be measured be drilling fluid carry return to bottom surface shale reservoir landwaste in screened；
Respectively in the glide direction application pressure perpendicular to the sliding groove 11 and along the glide direction of the sliding groove 11
Apply active force, to drive the sliding groove 11 relative to the opposite sliding of the fixing groove 12；
Step S2: moving distance and tangential force applying mechanism 22 of the sliding groove 11 relative to the fixing groove 12 are detected
The active force when sliding groove 11 being driven to slide；
Step S3: according to described to be measured in the moving distance, the active force, the pressure and the sliding groove 11
Relative contact product between the rock 50 to be measured in rock 50 and the fixing groove 12 obtains the rock 50 to be measured
The frictional strength of coefficient of friction and the rock to be measured 50.
It should be noted that second embodiment of the present invention provides a kind of rock frictional test experimental methods, will be taken in drilling fluid first
The landwaste screening of band is used as rock 50 to be measured, and rock 50 to be measured is fixed to sliding groove 11 by curable material 13 or is fixed
In slot 12.Fixing groove 12 and sliding groove 11 are installed, unilateral shearing friction and bilateral shearing friction can be selected real according to experiment needs
Test mode.Start force application assembly 20, is that sliding groove 11 is mobile relative to fixing groove 12, is generated between rock 50 to be measured
Sliding friction, while detection components 30 are detected, and 11 moving distance of sliding groove is obtained, and drive the active force of sliding groove 11, just
Between the rock to be measured 50 in the rock to be measured 50 and fixing groove 12 in stress and sliding groove 11 that stress applying mechanism applies
Relative contact product, according to coefficient of friction calculation formula (1) and frictional strength calculation formula (2) calculating, obtain rock to be measured
50 frictional strength and coefficient of friction completes experimentation.
Rock frictional test experimental method provided by Embodiment 2 of the present invention is by being embedded in solidifiable for rock in irregular shape
In material 13, simplify the experimentation of the irregular rock, saves experimental cost；By the way that the various components of experimental provision are integrated
Change setting, the experimental provision is made to adapt to the complex environment of situ of drilling well；The number of acquisition experiment in real time is automated by computer 41
According to, and Synchronization Analysis experimental result, the accuracy of experimental result is improved, the operation difficulty and complexity of experimentation are reduced.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (6)
1. a kind of rock frictional test experimental provision, which is characterized in that including rock fixation kit, force application assembly and inspection to be measured
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 the rock to be measured in the sliding groove and described in the fixing groove
Rock to be measured has opposite 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 applying pressure in the glide direction perpendicular to the sliding groove, the tangential force applying mechanism on the sliding groove for applying
Add the active force of the glide direction along the sliding groove；
The detection components include displacement sensor and tension sensor, and institute's displacement sensors are for detecting the sliding groove phase
For the moving distance of the fixing groove, the tension sensor drives the sliding for detecting the tangential force applying mechanism
Slot slide when active force, with according in the moving distance, the active force, the pressure and the sliding groove to
The relative contact product surveyed between the rock to be measured in rock and the fixing groove obtains the friction system of the rock to be measured
Several and the rock to be measured frictional strength；
The tangential force applying mechanism includes traction motor and traction steel rope of cable, and described traction steel rope of cable one end and the traction are electronic
The output axis connection of machine, the other end of the traction steel rope of cable are fixedly connected with the sliding groove；
The detection components further include pulling force room, and the tension sensor is mounted on the drawing by pulling force screw rod and fixing bolt
In power room, the pulling force screw rod and the fixing bolt are individually fixed in the opposite end of the tension sensor, the pulling force
Screw rod is connect with the traction steel rope of cable；
The pulling force room further includes levelling device, and the levelling device is mounted on the tension sensor bottom, for adjust and
Eliminate the inclination angle of the tension sensor in the horizontal direction；
The levelling device is hung oneself from a beam including at least two, and at least two overarms are fixed on pulling force room bottom side by side
Portion, and overarm in the vertical direction height-adjustable, wear at least one supporting point, the drawing in the every overarm
Force snesor is placed on the supporting point；
The every overarm end is equipped with leveling serew in the vertical direction, to adjust the height of the overarm in the vertical direction
Degree.
2. rock frictional test experimental provision according to claim 1, which is characterized in that it further include data handling component, it is described
Data handling component and the detection components have electrical connection, and the data handling component according to the detection components for being examined
The active force detected by the moving distance that measures, the detection components, the normal pressure applying mechanism apply
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 or 2, which is characterized 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 the fixed rock to be measured in the surface for the rock to be measured fixed in the sliding groove and the fixing groove
Mutually contact.
4. rock frictional test experimental provision according to claim 1 or 2, which is characterized in that the rock fixation kit to be measured
Including a sliding groove and two fixing grooves, the slot bottom of the sliding groove has opposite with the notch of the sliding groove
The opening of setting, and be located at the sliding groove in the rock to be measured have be exposed at except the notch and the opening respectively
Both side surface, the fixing groove is separately positioned on the opposite sides of the sliding groove, the notch and opening point of the sliding groove
It is not opposite with the notch of the fixing groove so that the both side surface of the rock to be measured in the sliding groove respectively with it is described solid
The surface for determining the rock to be measured in slot contacts with each other.
5. rock frictional test experimental provision according to claim 2, which is characterized in that the data handling component includes calculating
Machine and data line for being separately connected the computer Yu institute's displacement sensors and the tension sensor；The meter
Calculation machine for storing the moving distance and the active force, and according to the moving distance, 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.
6. rock frictional test experimental provision according to claim 1, which is characterized in that the curable material is asphalt mixtures modified by epoxy resin
Rouge is embedded with the edge shape of the epoxy resin of the rock to be measured and the shape of the sliding groove or the fixing groove
Match, and be provided with and can be held out against on the epoxy resin in the sliding groove or the fixing groove, so that the epoxy
Resin and the sliding groove or the relatively-stationary jackscrew of the fixing groove.
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| CN106918552B true CN106918552B (en) | 2019-09-20 |
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| CN109612925B (en) * | 2019-01-22 | 2024-02-20 | 厦门理工学院 | Vertical measurement device and measurement method for friction coefficient of prepreg cloth |
| CN110082289A (en) * | 2019-05-13 | 2019-08-02 | 西南石油大学 | A kind of sillar friction coefficient measurement method and device based on fluid environment |
| CN110118723B (en) * | 2019-06-06 | 2021-09-14 | 辽宁工程技术大学 | Device and method for testing friction coefficient of natural section of rock |
| CN110907268B (en) * | 2019-12-31 | 2024-09-24 | 贵州理工学院 | Rock shear strength tester |
| CN113533196B (en) * | 2021-06-25 | 2022-09-23 | 重庆大学 | High-precision direct test method for measuring friction coefficient of complex contact surface |
| CN114459991B (en) * | 2022-04-11 | 2022-06-14 | 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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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1318834C (en) * | 2004-11-26 | 2007-05-30 | 成都理工大学<Del/> | Direct shear test machine for rock |
| CN102169061B (en) * | 2011-01-07 | 2013-01-02 | 河海大学 | Manufacture method for rock samples |
| CN102866050B (en) * | 2012-10-09 | 2015-10-21 | 中国矿业大学 | A kind of test material preparation method of irregular coal petrography block or easy broken coal petrography block |
| CN102944665B (en) * | 2012-11-22 | 2015-10-21 | 武汉大学 | Be applicable to shear box and the test method of rock joint shear seepage coupling test |
| CN103175720A (en) * | 2013-03-16 | 2013-06-26 | 蒲成志 | Processing technique of irregular rock during indoor drilling coring |
| CN105891011B (en) * | 2015-06-24 | 2017-03-15 | 中国石油大学(北京) | Rock frictional test strength meter under a kind of different fluid effect |
| CN106324223B (en) * | 2016-09-30 | 2019-04-09 | 东北石油大学 | A kind of high infiltration strip core model and production method and device |
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