CN110261199A - A kind of fine crack producing device and method of true rock sample - Google Patents
A kind of fine crack producing device and method of true rock sample Download PDFInfo
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- CN110261199A CN110261199A CN201910588535.8A CN201910588535A CN110261199A CN 110261199 A CN110261199 A CN 110261199A CN 201910588535 A CN201910588535 A CN 201910588535A CN 110261199 A CN110261199 A CN 110261199A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
- G01N2001/2866—Grinding or homogeneising
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Abstract
The invention discloses the fine crack producing device and method of a kind of true rock sample, device includes basic platform, high speed electric drill, specimen holder, apparatus for adjusting position；High speed electric drill and specimen holder are arranged by apparatus for adjusting position；Apparatus for adjusting position is made of lifting device, vertical shift device and sample shift unit: vertical shift device is in liftable and the adjustable structure of pitch angle；Specimen holder is in be arranged to horizontal transverse movement；High speed electric drill is movably arranged on vertical shift device, and carries out crack processing by clamping diamond cutter.Specimen holder has two kinds of structure types of six face cuboid samples and disk sample.Crack production method is implemented based on device.The invention has the advantages that apparatus structure is simple, cheap, convenient for a variety of fine crack production operations；Production method technical process is reasonable, crack smooth regular, lays good basis for researchs such as failure mode, the fracture propagation mechanisms of development true rock containing crack.
Description
Technical field
The invention belongs to sample processing technique field, the fine crack producing device of specifically a kind of true rock sample and
Production method.
Background technique
In geotechnical engineering field, what it is containing crack rock and complex form, which is that frequently encounter a kind of is complicated containing crack rock, is situated between
Matter is all kinds of geotechnical engineering stability of maintenance and unconventional oil and gas to researchs such as this kind of crack propagation containing crack rock, evolutions
Important component part in Exploitation research.A large amount of engineering practices show in geotechnical engineering field, the cracking and fracture network of rock mass
Formation receive influence, such as crustal stress, Fluid pressure of factors etc., the wherein heterogeneity and primary joint of rock mass
There is important influence in crack to its cracking model, crack progressing evolution condition, fracture network structural form feature etc..Therefore, should
The crack producing device of cube rock sample and method are for carrying out failure mode, the crack striking machine of the true rock containing crack
The researchs such as the pressure break of reason and coal bed gas exploitation have important value.
Be currently used in laboratory and include the rock sample of fissure rock research and be mostly that analog material is made, and analog material relative to
All kinds of true rock material physical property differences are huge.Method currently used for the true rock fracture production in laboratory has waterpower to cut
Cut method and circular saw bit cutting, waterpower cutting can make run through, half through crack.But its Depth is not easy to control, also not
Easily guarantee that two fissure-planes on fracture width direction are relatively parallel, and when waterpower cutting production rock fracture, lithosome is disturbed
It moves larger, easily influences the integrality of true rock.The method for cutting fracture surface by circular saw bit, and the crack being cut into
Generally circular base is presented in depth direction in face, can not the consistent rock fracture of working depth.In short, being split at present using more containing
Gap rock production method more or less has the following insufficient: first, non-make pre- crack using true rock material；Second is that
Crack is affected to the integrality of rock sample when processing, and is easy accurately impacting to subsequent experimental result；Third is that same
Two fracture surfaces in one crack are not parallel to each other, and when prefabricated crack increases the roughness in crack, are unfavorable for theoretical research；Four
When being prefabricated crack, fracture width be cannot keep unanimously, be unable to control width factor, increase the difficulty of theoretical model derivation；
Fifth is that making apparatus is at high price, it is unfavorable for commonly used.For this reason, it may be necessary to which a kind of crack that can overcome aforementioned drawback makes dress
It sets, with the production for true rock sample crack.
Summary of the invention
The first object of the present invention aiming at the deficiency that true rock sample making apparatus involves great expense in the prior art,
A kind of fine crack producing device of true rock sample is provided, to simplify structure, reduce cost, to make in protolith sample
In be widely used.The second object of the present invention is to provide a kind of protolith sample production method implemented based on aforementioned, with
The man-made fracture of protolith sample is obtained by this method, for carry out the failure mode of the true rock containing crack, fracture propagation mechanism,
And the researchs such as pressure break exploitation of coal bed gas create conditions.
To realize that the first purpose, the present invention adopt the following technical scheme that.
A kind of fine crack producing device of true rock sample, including basic platform, high speed electric drill, specimen holder,
Apparatus for adjusting position；The high speed electric drill and specimen holder pass through apparatus for adjusting position and connect with the basic platform；Institute
State apparatus for adjusting position to be made of lifting device, vertical shift device and sample shift unit: vertical shift device passes through angle
Adjuster is located on lifting device, and is connect in liftable structure with lifting device；Angle demodulator has pitch angle can
The structure of adjusting；The specimen holder is located on sample shift unit, and sample shift unit is in set to horizontal transverse movement
On the basic platform；The high speed electric drill is movably arranged on vertical shift device, and high speed electric drill passes through clamping Buddha's warrior attendant
Stone cutter carries out crack processing.
Using the present invention of preceding solution, the drilling axis of travel of electric drill can be parallel to horizontal plane, can also be in setting
The pitch tilt of angle is arranged, and vertical shift device is consistent with drilling rod direction, and protolith sample can be fixed by specimen holder, and
The adjusting of horizontal cross position is carried out by sample shift unit, high speed electric drill can pass through lifting device and vertical shift device
Cooperation realizes that lifting and lengthwise position are adjusted, so that high speed electric drill and protolith sample may be implemented by apparatus for adjusting position
The adjusting and correction of position.Wherein, manual or power drive can be used in the adjusting of any axial position, such as feed screw nut's auxiliary driving
Manual actuation and motor driving of structure etc., industrial control technology in the prior art is equipped with when being driven using motor may be implemented
Semi- or fully automated control.Since sample usually has positive six face cube and pied geometry, by sample exchange direction and
The processing of many cracks may be implemented in the clamping again of specimen holder, and the specific structure of specimen holder can be according to specimen shape
Carry out adaptability design.Since pre-firing hole drill spot facing cutter uses diamond cutter, it can be easily and efficiently in protolith sample
Upper formation crack.Wherein, diamond cutter may include drill bit and grinding machine head, after completing multiple drillings with drill bit, also using mill
Head is cut to carry out reconditioning and multiple drillings is made successively to be formed through man-made fracture.It, first will by specimen holder using the present invention
Sample is fixed on basic platform, then, carries out sample and high speed electric drill relative position, bore position by apparatus for adjusting position
It adjusts；Recycle high speed electric drill drill to sample, in conjunction with sample shift unit vertical shift device in fracture length side
Arrangement multiple parallel holes on the same line are drilled through upwards, recycle high speed electric drill clamping grinding machine head and sample shift unit
In conjunction with making multiple horizontal bores successively penetrate through and form people in crack, the penetration of fracture can be effectively controlled, and can ensure that and split
It is parallel to stitch two sidewalls plane.When needing to process many cracks and change crack location, exchanges and direction is exchanged by specimen holder
Again clamping.It is thus possible to realize the crack processing on six face cubes on any one face；When sample shift unit is in pitching
When inclination, the diagonal crack production of former stone sample can be realized.
Preferably, the angle demodulator includes the lifting slider driven by the lifting device, and lifting slider is equipped with
Angular adjustment seat, lifting slider and angular adjustment seat are hinged by articulated shaft；Lifting slider and angular adjustment seat also by with energy
The bolt that enough jacks with multiple and different positions cooperate, which limits, to be rotated, to form relatively-stationary phase relation；The lifting dress
It is set on the basic platform；The lifting device, vertical shift device and sample shift unit pass through corresponding silk respectively
Stem nut auxiliary driving structure realizes that position is adjusted；It is additionally provided on the vertical shift device and drilling drive is carried out to the high speed electric drill
The drilling loading unit of dynamic and drilling depth control.Ensure that diagonal crack is easy to make, and forms the automatic load of drilling and crack depth
Degree automatically controls.
It is further preferred that being equipped with graduated scale on the lifting device and vertical shift device；The angular adjustment
Device is equipped with angle scale.To measure regulating effect and expected regulated quantity by graduated scale, control is conveniently manually adjusted.
It is further preferred that the drilling loading unit includes loading spring, blocking element and limiting device, loading spring
It creeps into and drives for high speed electric drill, blocking element is used for the drilling of high speed electric drill for the mobile locking of high speed electric drill, limiting device
Stroke control.It creeps into loading unit and drilling driving is implemented using loading spring, before drilling, high speed electric drill is acted in blocking element
It is in lockup state down, after blocking element unlock, high speed electric drill auto-feed under loading spring effect, until being limited dress
Blocking is set, design drilling depth is reached, is simplified to be conducive to further structure.Wherein, blocking element can be locked by milled screw etc.
Only screw is constituted；Limiting device is by fixed stop or is adjusted by the thread the active block stop of position and constitutes.
Preferably, the diamond cutter is the drill bit and grinding machine head group of the diamond material of 0.5mm~1.5mm by diameter
At；Grinding machine head is in round bar shape grinding wheel structure, and drill bit and grinding machine head are filled in the way of selecting one by the drill chuck that high speed electric drill is arranged
It is clamping fixed.To be adapted to width as the processing of the crack 0.5mm~1.5mm；Simultaneously, it can be achieved that first drilling, then reconditioning penetrates through all brills
Hole is to form the crack of two sides finishing, it is ensured that crack two sides are parallel.Wherein, running through for drilling can use diamond circular
Column milling cutter, when using milling cutter, grinding machine head is only used for the finishing reconditioning after running through.
Preferably, the specimen holder is located on sample shift unit by turntable.With in the process of crack, shape
After the completion of the round drilling in crack, sample is rotated by turntable, makes drill bit in drilling where multiple drilling axis
After being tilted a certain angle in plane with drilling axis, the adjacent hole wall being connected that drills is drilled through, to reduce perforation reconditioning
Processing capacity, improve producing efficiency.
The device of this programme is capable of processing water straight slit, dipping fracture or Brazil's splitting seam；Water straight slit refers to crack
Parallel with lower planes, depth extending direction is towards opposite prismatic surface；Dipping fracture refers to flaw level face in a constant inclination
Angle, depth extending direction is towards opposite prismatic surface；Brazil's splitting seam refers to forms longitudinal direction in the middle part of the former stone sample of round pie
The crack of extension.
To realize that the second purpose, the present invention adopt the following technical scheme that.
A kind of fine crack production method of true rock sample is implemented, packet based on the device for realizing first invention purpose
Include following steps:
The first step draws diagonal crack position according to the fracture parameters in true protolith sample crack to be processed on rock sample
It sets；Wherein, fracture parameters include angle and the position of Number of Fractures, width, length, depth and horizontal plane；
True protolith sample is fixed on specimen holder in a manner of horizontal by lower planes, and passed through by second step
The position of apparatus for adjusting position coarse adjustment sample；Meanwhile according to fracture width, the diameter diamond tool equal with fracture width is chosen
Tool, and pass through the fixed diamond cutter of the drill chuck clamping of high speed electric drill；
Third step, by angle demodulator by vertical shift device be adjusted to be parallel to the horizontal plane or crack and horizontal plane it
Between the identical tilt angle of angle；High speed electric drill height and horizontal position are adjusted by lifting device and vertical shift device；And
Make the chisel edge tip for constituting diamond cutter close to sample, the tip endpoint of drill bit constitutes drilling starting point；And in high speed
In electric drill drilling process, the nose tip of drill bit and the contact point of sample constitute crack and process starting point；
4th step, starting high speed electric drill creep into drill bit by penetration of fracture direction, until returning after drilling set depth
Drill bit is moved back to creeping into starting point；
5th step, adjusts test specimen position by specimen holder, changes bore position towards fracture length direction, and make adjacent
Drilling is not mutually communicated；
6th step repeats the 4th step and the 5th step, completes more on fracture length direction on cube protolith sample
A drilling；
Test specimen is adjusted to bore position for the first time by specimen holder by the 7th step；And by bit change-over be grinding machine head；
8th step passes through specimen holder after starting high speed electric drill makes grinding machine head be fed into set depth by penetration of fracture direction
Holder keeps test specimen displacement dynamic；Multiple drillings are successively formed through crack.
Using the method for the present invention of aforementioned schemes, is implemented based on the device for realizing first invention purpose, pass through sample first
Sample is fixed on basic platform by clamper, then, by apparatus for adjusting position carry out sample and high speed electric drill relative position,
Bore position, bore inclining angular adjustment；High speed electric drill is recycled to be formed the drilling and perforation reconditioning of crack process, thus
Formation is parallel to the horizontal plane or inclined crack, and drilling feeding can be implemented by apparatus for adjusting position, can also be loaded by drilling
Unit is implemented.The cutter of diamond material is used with reconditioning cutter due to drilling, it can be easily and efficiently in protolith sample
Upper formation crack.Obviously, diamond cutter includes drill bit and grinding machine head, after carrying out multiple hole drillings with drill bit, then using mill
It cuts head and carries out grinding dressing, penetrate through multiple drillings on fracture length direction, to form one on a side of sample
Crack needed for item；It needs when same side forms another crack, repeats third step to the 8th step.It needs another
When one side forms new crack, second step is repeated to the 8th step, and draws all slits processing in the first step
The position line.
Preferably, before the more bit change of the 7th step, further include that sample is rotated by turntable, make bit inclination in
The direction of drilling, and multiple through holes are bored on the adjacent hole wall for drilling and being connected, run through reconditioning quality to reduce, improves production effect
Rate.For it is same need to perforative region, turntable can be rotated by positive and negative both direction, with from two sides respectively to the hole wall being connected
Implementation drills through twice, to substantially reduce reconditioning quality.
Wherein, when constructing many cracks in same sample, grinding machine head is changed to brill after processing is completed in current fracture
Head, and cooperateed with by lifting device and specimen holder, change specimen clamping state or sample lateral position, makes close to crack
Crack processing starting point is located in drill axis.
Before carrying out dipping fracture processing, changes the tilt angle of drill axis and horizontal plane by angle demodulator, make
It is consistent with the crack tilt angle of quasi- processing.Before carrying out oblique angle crack processing, make test specimen with sample by rotary table
Clamper rotates set angle, and the sample plane and drill axis where so that crack is processed starting point are in horizontal plane at setting
Determine the angle of angle.
The invention has the following advantages: device tool there are three axial direction adjustment structure and electric drill relative to
Horizontal plane pitch tilt angle-regulation structure, to form four axial adjustment structures；It can add on six face cuboid samples
Work goes out the crack of a variety of horizontally or diagonally states.Its structure is simple, cheap, convenient for answering extensively in the production of protolith sample
With.Production method is implemented based on aforementioned device, and the man-made fracture smooth regular of protolith sample, crack two sides are obtained by this method
Face is parallel, and the failure mode, fracture propagation mechanism and the pressure break exploitation of coal bed gas etc. to carry out the true rock containing crack are studied
Lay good basis.
Detailed description of the invention
Fig. 1 is apparatus of the present invention high speed electric drill direction of travel in horizontal structural schematic diagram.
Fig. 2 is the inclined structural schematic diagram of apparatus of the present invention high speed electric drill direction of travel.
Fig. 3 is the structural schematic diagram of the angle demodulator in apparatus of the present invention.
Fig. 4 is the specimen holder structural representation axonometric drawing for six face cubes in apparatus of the present invention.
Fig. 5 is the specimen holder structural schematic diagram that disk sample is used in apparatus of the present invention, and it is horizontal to be suitable for both ends of the surface
The situation of setting.
Fig. 6 is the top view of Fig. 5 in apparatus of the present invention.
Fig. 7 is the specimen holder structural schematic diagram that disk sample is used in apparatus of the present invention, and it is vertical to be suitable for both ends of the surface
The situation of setting.
Fig. 8 is the left view of Fig. 7 in apparatus of the present invention.
Fig. 9 is the six face cube rock samples that production has horizontal fracture.
Figure 10 is the six face cube rock samples that production has dipping fracture.
Figure 11 is that crannied disk sample is made on cylinder.
The end face Figure 12 makes crannied disk sample.
The figures above is also used to illustrate the method for the present invention.
Specific embodiment
Type of the present invention is further described with reference to the accompanying drawing, embodiment is exemplary, and is only used for disclosing reconciliation
Release type of the present invention, to fully understand type of the present invention, but not therefore by type of the present invention be limited in the embodiment described range it
It is interior.
Embodiment 1, referring to Fig. 1, Fig. 2, Fig. 3, a kind of fine crack producing device of the true rock sample of six face cube,
Including basic platform 1, high speed electric drill 7, specimen holder 8, apparatus for adjusting position；The high speed electric drill 7 and specimen holder 8 are equal
It is connect by apparatus for adjusting position with the basic platform 1；The apparatus for adjusting position is by lifting device 91, vertical shift device
92 and sample shift unit 93 form: vertical shift device 92 is located on lifting device 91 by angle demodulator, and be in can rise
Drop is structurally connect with lifting device 91；Angle demodulator has the adjustable structure of pitch angle；The specimen holder 8 is logical
It crosses turntable 24 to be located on sample shift unit 93, wherein the revolving member of turntable 24 is fixedly connected with specimen holder 8, turntable
24 fixed part is fixedly connected with sample shift unit 93；Sample shift unit 93 is described in can be located to horizontal transverse movement
On basic platform 1；The high speed electric drill 7 is movably arranged on vertical shift device 92, and high speed electric drill 7 passes through clamping diamond
Cutter 6 carries out crack processing.
Wherein, the angle demodulator includes the lifting slider 12 driven by the lifting device 91, on lifting slider 12
Equipped with angular adjustment seat 13, lifting slider 12 and angular adjustment seat 13 are hinged by articulated shaft 14；Lifting slider 12 and angle tune
It saves seat 13 also to rotate by limiting with the bolt 15 that can cooperate with the jack of multiple and different positions, to form relatively-stationary phase
Position relationship；Wherein, lifting slider 12 is equipped with one or a pair of of pin hole, angular adjustment seat 13 are equipped with several or several pairs of bolts
Hole, the positional relationship that bolt 15 keeps the phase of the two fixed by the pin hole of both insertions；Pass through rotational angle adjustment seat 13
Match the pin hole of the pin hole of different location and lifting slider 12 in rotational angle adjustment seat 13, to realize respective angles
The angle regulating function of adjuster.A pair of of pin hole refers to two pin hole structures using hinged center as the center of circle, being distributed in 180 degree
In a pair.The lifting device 91 is located on the basic platform 1；The lifting device 91, vertical shift device 92 and sample
Shift unit 93 realizes that position is adjusted by corresponding feed screw nut pair drive mechanism respectively；On the vertical shift device 92 also
Equipped with the drilling loading unit for carrying out drilling driving and drilling depth control to the high speed electric drill 7.
Graduated scale is equipped on the lifting device 91 and vertical shift device 92；The angle demodulator is equipped with angle
Scale.The drilling loading unit includes loading spring, blocking element and limiting device, and loading spring is bored for high speed electric drill 7
Into driving, blocking element is controlled for the mobile locking of high speed electric drill 7, drilling stroke of the limiting device for high speed electric drill 7.Its
In, vertical shift device 92 is provided with longitudinal movement sliding block 21, and high speed electric drill 7 is located at longitudinal movement sliding block by guide rail auxiliary structure
On 21, blocking element is located on high speed electric drill 7, and forms locking connection relationship with longitudinal movement sliding block 21；Vertically move sliding block
The limiting device being made of limited block is fixedly connected on 21, limited block is located at the front end in 7 drilling-machine shifter direction of high speed electric drill；Institute
It states loading spring 7a and is located at 7 rear end of high speed electric drill.The diamond material that the diamond cutter 6 is 1.0mm~1.5mm by diameter
Drill bit, milling cutter and grinding machine head composition；Grinding machine head is in round bar shape grinding wheel structure, and drill bit and grinding machine head pass through height in the way of selecting one
The drill chuck clamping that fast electric drill 7 is arranged is fixed.The specimen holder 8 is connect by rotary table with the basic platform 1.
Wherein, running through for drilling can use diamond cylindrical milling cutter, and when using milling cutter, grinding machine head is only used for the finishing after running through and repairs
Mill；The specific structure of specimen holder 8 can carry out adaptability design according to specimen shape.
Such as Fig. 4, for the specimen holder 8 of six face cube original stone sample cracks production, including bottom plate 81, on bottom plate 81
Two pieces of positioning plates 82 for having form right angle to be distributed are erect, two pieces of 82 opposites of positioning plate are respectively equipped with movably pressing plate 83, pressure
Plate 83 is active to be connected to clamping screw distal end, and clamping screw is screwed on screw bolt seat 84, and clamping screw proximal end is equipped with handle 85；Institute
It states bottom plate 81 to be fixedly connected on the revolving member of turntable 24, the fixed part of turntable 24 is fixedly connected on sample shift unit 93
Mobile member on.
In the present embodiment, sample shift unit 93 may also set up graduated scale；7 driller of high speed electric drill in place after, manually push away
Retract position；Also settable stop screw 23 on limited block, to adjust driller's stroke.
Embodiment 2, such as Fig. 5, Fig. 6, a kind of fine crack producing device of the true rock sample of disk, wherein specimen holder
Holder 8 makes for disk sample crack, and the both ends of the surface of sample are horizontally disposed, horizontally or diagonally split with being formed on cylinder
Seam.Specimen holder 8 includes bottom plate 81, including 81 one end of bottom plate is equipped with column 101 vertically, passes through threaded hole spiral shell on column 101
Conjunction has horizontally disposed top-fastening rod 102, and 102 front end of top-fastening rod is equipped with the arc locating piece for being resisted against disk sample cylinder
103,102 tail end of top-fastening rod is equipped with and holds out against handle；It is combined on the side side wall of column 101 by dove-tail form guide rail auxiliary structure
Gripping block 104 and lower gripping block 105, upper clamping block 104 and lower gripping block 105 are used to clamp examination by the both ends of the surface of disk sample
Sample；Upper clamping block 104 and lower gripping block 105 are connected by the threaded rod 106 of positive and negative double thread, to pass through rotation threaded rod 106
Upper clamping block 104 and lower gripping block 105 is set mutually to draw close or be located remotely from each other, threaded rod 106 and top-fastening rod 102 misplace；Threaded rod
106 lower ends are supported on the bottom plate 81 by bearing 107.This specimen holder 8 is suitable for disk sample both ends of the surface level and sets
The situation set.Wherein, the holding area of upper clamping block 104 is less than sample semicircle, and the holding area of lower gripping block 105 is greater than sample
Semicircle.
Remaining structure of the present embodiment is same as Example 1, and details are not described herein.
Embodiment 3, referring to Fig. 7, Fig. 8, a kind of fine crack producing device of the true rock sample of disk, wherein sample
Clamper 8 makes for disk sample crack, and the both ends of the surface of sample are vertically arranged, and are horizontally or diagonally split with being formed on end face
Seam.Wherein the main distinction of its structure and embodiment 2 of specimen holder 8 is, 102 front end of top-fastening rod is provided that plate shaped
The clamping section of pressing tight plate 108, upper clamping block 104 and lower gripping block 105 be provided with arc gripping block 109. remaining with Fig. 5, Fig. 6 institute
The structure of displaying is identical.
Remaining structure of the present embodiment is same as Example 2, and details are not described herein.
Embodiment 4, in conjunction with Fig. 1, Fig. 2, Fig. 3, Fig. 4, a kind of fine crack of the true rock sample of six face cube is made
Method is implemented based on 1 described device of embodiment, is included the following steps:
The first step draws diagonal crack according to the fracture parameters in cube original stone sample crack to be processed on rock sample
Position；Wherein, fracture parameters include angle and the position of Number of Fractures, width, length, depth and horizontal plane；
Cube protolith sample is fixed on specimen holder 8 in a manner of horizontal by lower planes, and led to by second step
Cross the position of apparatus for adjusting position coarse adjustment sample；Meanwhile according to fracture width, the diameter diamond equal with fracture width is chosen
Cutter 6, and pass through the fixed diamond cutter 6 of the drill chuck clamping of high speed electric drill 7；
Vertical shift device 92 is adjusted to be parallel to the horizontal plane or crack and horizontal plane by third step by angle demodulator
Between the identical tilt angle of angle；7 height of high speed electric drill and level are adjusted by lifting device 91 and vertical shift device 92
Position；And making the chisel edge tip for constituting diamond cutter 6 close to sample, the tip endpoint of drill bit constitutes drilling starting point；
And in 7 drilling process of high speed electric drill, the nose tip of drill bit and the contact point of sample constitute crack and process starting point；
4th step, starting high speed electric drill 7 creep into drill bit by penetration of fracture direction, until returning after drilling set depth
Drill bit is moved back to creeping into starting point；
5th step, adjusts test specimen position by specimen holder 8, changes bore position towards fracture length direction, and make phase
Neighbour's drilling is not mutually communicated；
6th step repeats the 4th step and the 5th step, completes more on fracture length direction on cube protolith sample
A drilling；
7th step rotates sample by turntable 24, makes bit inclination in the direction to have drilled, and is connected in adjacent drilling
Hole wall on bore multiple through holes, with reduce run through reconditioning quality；
Test specimen is adjusted to bore position for the first time by specimen holder 8 by the 8th step；And by bit change-over be grinding machine head；
9th step passes through specimen holder after starting high speed electric drill 7 makes grinding machine head be fed into set depth by penetration of fracture direction
Holder 8 keeps test specimen displacement dynamic；Multiple drillings are successively formed through crack.
Wherein, when constructing many cracks in same sample, grinding machine head is changed to brill after processing is completed in current fracture
Head, and being cooperateed with by lifting device 91 and specimen holder 8, changes specimen clamping state or sample lateral position, makes close to splitting
The crack processing starting point of seam is located in drill axis.Before carrying out dipping fracture processing, drill bit is changed by angle demodulator
The tilt angle of axis and horizontal plane keeps it consistent with the crack tilt angle of quasi- processing.
Using six face cube rock sample cracks of this method production horizontal fracture A and inclination as shown in Figures 9 and 10
Many cracks on crack B and a plurality of parallel fracture or dipping fracture and different sides on the same face.
When making many cracks on the same face, can be realized by lifting device 91 and vertical shift device 92；Not
When coplanar upper progress crack production, by specimen holder 8 again clamping sample, pass through lifting device 91 and vertical shift device
92 carry out position adjustment, carry out angle adjustment by angle demodulator.
Embodiment 5, a kind of fine crack production method of the true rock sample of disk, the difference of this method and embodiment 4
Point is, by 2 specimen holder of embodiment, 8 clamp circle disk sample, and is formed on disk sample cylinder and is horizontally or diagonally split
Stitch C.
For the present embodiment in addition to specimen clamping and 4 difference of embodiment, remaining step is same as Example 4, no longer superfluous herein
It states.
This method can form horizontal fracture or dipping fracture as shown in figure 11 on cylindrical surface, can also pass through sample holder
Device 8 changes the retaining part of disk sample, forms many cracks in out of phase, can also adjust height by lifting device 91
Degree, forms a plurality of parallel fracture in same phase.
Embodiment 6, a kind of fine crack production method of the true rock sample of disk, the difference of this method and embodiment 5
Point is, by 3 specimen holder of embodiment, 8 clamp circle disk sample, and is formed on disk sample end face and is horizontally or diagonally split
Seam.
For the present embodiment in addition to specimen clamping and 5 difference of embodiment, remaining step is same as Example 4, no longer superfluous herein
It states.
This method can form horizontal fracture or dipping fracture D as shown in figure 12 on cylindrical surface, can also pass through specimen holder
The clamping disk sample again of holder 8, forms crack on two, height can also be adjusted by lifting device 91, on end face is
Form a plurality of parallel fracture.
The preferred embodiment of type of the present invention is described in detail above.It should be appreciated that those skilled in the art
Without creative work can the design of type according to the present invention make many modifications and variations.Therefore, it is all in the art
Technical staff passes through logical analysis, reasoning, or a limited experiment according to the design of type of the present invention on the basis of existing technology can be with
Obtained technical solution, all should be within the scope of protection determined by the claims.
Claims (10)
1. a kind of fine crack producing device of true rock sample, it is characterised in that: including basic platform (1), high speed electric drill
(7), specimen holder (8), apparatus for adjusting position；The high speed electric drill (7) and specimen holder (8), which are adjusted by position, to be filled
It sets and is connect with the basic platform (1)；The apparatus for adjusting position is by lifting device (91), vertical shift device (92) and sample
Shift unit (93) composition: vertical shift device (92) is located on lifting device (91) by angle demodulator, and is in liftable
Structurally it is connect with lifting device (91)；Angle demodulator has the adjustable structure of pitch angle；The specimen holder (8)
It is located on sample shift unit (93), sample shift unit (93) is in that can be located to horizontal transverse movement the basic platform (1)
On；The high speed electric drill (7) is movably arranged on vertical shift device (92), and high speed electric drill (7) passes through clamping diamond tool
Have (6) and carries out crack processing.
2. the fine crack producing device of true rock sample according to claim 1, it is characterised in that: the angle tune
Section device includes the lifting slider (12) driven by the lifting device (91), and lifting slider (12) is equipped with angular adjustment seat
(13), lifting slider (12) and angular adjustment seat (13) are hinged by articulated shaft (14)；Lifting slider (12) and angular adjustment seat
(13) it is also rotated by being limited with the bolt (15) that can cooperate with the jack of multiple and different positions, to form relatively-stationary phase
Position relationship；The lifting device (91) is located on the basic platform (1)；The lifting device (91), vertical shift device
(92) and sample shift unit (93) realizes that position is adjusted by corresponding feed screw nut pair drive mechanism respectively；Longitudinal shifting
The drilling loading unit that drilling driving and drilling depth control are carried out to the high speed electric drill (7) is additionally provided on position device (92).
3. the fine crack producing device of true rock sample according to claim 2, it is characterised in that: the lifting dress
It sets and is equipped with graduated scale on (91) and vertical shift device (92)；The angle demodulator is equipped with angle scale.
4. the fine crack producing device of true rock sample according to claim 2, it is characterised in that: the drilling adds
Carrier unit includes loading spring, blocking element and limiting device, and loading spring is for the driving of high speed electric drill (7) drilling, locking structure
Part is controlled for high speed electric drill (7) mobile locking, drilling stroke of the limiting device for high speed electric drill (7).
5. the fine crack producing device of true rock sample according to claim 1, it is characterised in that: the diamond
Cutter (6) is made of the drill bit and grinding machine head of the diamond material that diameter is 0.5mm~1.5mm；Grinding machine head is in round bar shape grinding wheel
Structure, drill bit and grinding machine head are fixed in the way of selecting one by the drill chuck clamping that high speed electric drill (7) are arranged.
6. the fine crack producing device of true rock sample described according to claim 1~any one of 5, feature exist
In: the specimen holder (8) is located on sample shift unit (93) by turntable (24).
7. a kind of fine crack production method of true rock sample, which is characterized in that based on any one in claim 1~6
Item described device is implemented, and includes the following steps:
The first step draws diagonal crack position according to the fracture parameters in former stone sample crack to be processed on rock sample；Wherein,
Fracture parameters include angle and the position of Number of Fractures, width, length, depth and horizontal plane；
Protolith sample is fixed on specimen holder (8) in a manner of horizontal by second step by lower planes, and passes through position tune
The position of regulating device coarse adjustment sample；Meanwhile according to fracture width, the diameter diamond cutter (6) equal with fracture width is chosen,
And pass through the fixed diamond cutter (6) of the drill chuck clamping of high speed electric drill (7)；
Third step, by angle demodulator by vertical shift device (92) be adjusted to be parallel to the horizontal plane or crack and horizontal plane it
Between the identical tilt angle of angle；By lifting device (91) and vertical shift device (92) adjust high speed electric drill (7) highly and
Horizontal position；And making the chisel edge tip for constituting diamond cutter (6) close to sample, the tip endpoint composition of drill bit is crept into
Initial point；And in high speed electric drill (7) drilling process, the nose tip of drill bit and the contact point of sample constitute crack processing and originate
Point；
4th step, starting high speed electric drill (7) creep into drill bit by penetration of fracture direction, until retracting after drilling set depth
Drill bit is to creeping into starting point；
5th step, adjusts test specimen position by specimen holder (8), changes bore position towards fracture length direction, and make adjacent
Drilling is not mutually communicated；
6th step repeats the 4th step and the 5th step, completes multiple drillings on protolith sample on fracture length direction；
Test specimen is adjusted to bore position for the first time by specimen holder (8) by the 7th step；And by bit change-over be grinding machine head；
8th step passes through sample holder after starting high speed electric drill (7) makes grinding machine head be fed into set depth by penetration of fracture direction
Device (8) keeps test specimen displacement dynamic；Multiple drillings are successively formed through crack.
8. the fine crack production method of true rock sample according to claim 7, it is characterised in that: the described 7th
Before the more bit change of step, further includes rotating sample by turntable (24), make bit inclination in the direction to have drilled, and in adjacent brill
Multiple through holes are bored on the hole wall that hole is connected, and run through reconditioning quality to reduce.
9. the fine crack production method of true rock sample according to claim 7, it is characterised in that: in same sample
When upper construction many cracks, grinding machine head is changed to drill bit after processing is completed in current fracture, and by lifting device (91) and
Specimen holder (8) collaboration, changes specimen clamping state or sample lateral position, makes the crack processing starting point close to crack
In in drill axis.
10. the fine crack production method of true rock sample according to claim 7, it is characterised in that: inclining
Before diagonal crack processing, changes the tilt angle of drill axis and horizontal plane by angle demodulator, make the crack of itself and quasi- processing
Tilt angle is consistent.
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| CN201910588535.8A CN110261199B (en) | 2019-07-01 | 2019-07-01 | Device and method for manufacturing fine cracks of real rock sample |
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| CN201910588535.8A CN110261199B (en) | 2019-07-01 | 2019-07-01 | Device and method for manufacturing fine cracks of real rock sample |
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| CN110261199B (en) | 2021-07-20 |
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