CN105181483B - Compression-shear testing apparatus for rock in dry-wet cyclic process - Google Patents
Compression-shear testing apparatus for rock in dry-wet cyclic process Download PDFInfo
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- CN105181483B CN105181483B CN201510677617.1A CN201510677617A CN105181483B CN 105181483 B CN105181483 B CN 105181483B CN 201510677617 A CN201510677617 A CN 201510677617A CN 105181483 B CN105181483 B CN 105181483B
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Abstract
The invention belongs to the field of geotechnical engineering, and in particular relates to a compression-shear testing apparatus for a rock in a dry-wet cyclic process. The apparatus comprises an angle-variable compression-shear unit, and a compression machine for vertically applying load onto the angle-variable compression-shear unit; the apparatus also comprises a reservoir, water injection equipment for carrying out moisture saturation treatment on a rock sample in the angle-variable compression-shear unit, and heating equipment for carrying out hot-gas drying treatment on the rock sample in the angle-variable compression-shear unit. The angle-variable compression-shear unit is located in the reservoir, and the reservoir is communicated with the water injection equipment and the heating equipment. By adopting the compression-shear testing apparatus, the integration of rock sample dry-wet cyclic treatment and a shear test is realized, and the apparatus has the advantages of simple structure, convenient operation, low cost, wide application range and long service life; the rock samples in different states after different dry-wet cyclic times can be accurately simulated, shear test research is carried out on the rock samples, and moreover, failure load and displacement of the rock samples in the vertical direction in the shear test process can be recorded in real time.
Description
Technical field
The invention belongs to Geotechnical Engineering field, and in particular to the compression shear test device of rock during a kind of drying and watering cycle.
Background technology
Reservoir level cyclically-varying causes Rock And Soil to be always at " being dried-full water " active state, the engineering for thus causing
Geological disaster has caused the attention of numerous scholars and engineering circles, studies the focus that water petrofacies interaction becomes in Geotechnical Engineering
Problem.Water petrofacies interaction is mainly shown as：Water petrofacies interaction cause the mineralogical composition of Rock And Soil, porosity, cement and
Its permutation and combination method changes, and so as to cause damage of rock, causes its intensity (particularly shear strength parameter) to occur big
Amplitude reduction, causes the destruction of soft rock, or even causes the unstability of reservoir stability, and to the long-time stability of Geotechnical Engineering prestige is produced
The side of body.
Determining the laboratory test common method of shear of rock intensity has：The examination of direct shear test, compression-shear test and triaxial compressions
Test.Compression-shear test common are angle compression-shear test, torsion test, direct shear apparatus compression-shear test etc., and wherein angle compression-shear test is
The most frequently used indoor shear of rock strength detection method, has the advantages that equipment is simple and convenient to operate.Different angle shearing testing is utilized
Pressure testing machine applies vertical load, sillar sample is cut off along a shear surface by special cornea, by changing shearing
The angle in face can obtain a series of direct stress and shear stress when sillars are destroyed, and so as to draw out strength envelope, try to achieve rock
The mechanics parameters such as the internal friction angle and cohesiveness of stone.
It is to the conventional test methodologies under the conditions of reservoir level mechanical periodicity in rock behavio(u)r during drying and watering cycle：Foundation
《Water power hydraulic engineering rock test code》Cube rock sample is submerged and freely absorb water 48 by (DL/T 5368-2007)
Take out after hour, the rock sample is put into into drying baker, take out after being dried 24 hours at carrying out 45 DEG C, this is " being dried-full water " circulation
Process, the method is accurately simulated under reservoir level mechanical periodicity in the state of rock during drying and watering cycle.But mesh
It is front to there is test apparatuses complexity, behaviour for drying and watering cycle acts on the impact experimental study to the mechanical characteristic (shearing strength) of rock
The shortcomings of making loaded down with trivial details and somewhat expensive, it is less for the instrument of the shearing test of rock in simulation drying and watering cycle.
The content of the invention
The invention provides during a kind of drying and watering cycle rock compression shear test device, the apparatus structure is simple, be easy to
It is operation, with low cost, can neatly adjusting sample shear surface angle, under can accurately simulating Jing drying and watering cycles effect
Rock conditions, and measure its mechanics parameter.
In order to realize the purpose of the present invention, technical scheme below is present invention employs：
The compression shear test device of rock during a kind of drying and watering cycle, including angle compression shear unit, and vertical applying load
Forcing press of the lotus on angle compression shear unit, the device also includes reservoir, rock sample in angle compression shear unit is carried out at full water
The water injection equipment of reason, the firing equipment that hot gas drying process is carried out to rock sample in angle compression shear unit, the angle compression shear unit
In reservoir, the reservoir is communicated with water injection equipment, firing equipment.
Further technical scheme：The water injection equipment includes water pump, and the water pump is communicated with reservoir water inlet, described
Pipeline between water pump and reservoir water inlet is provided with flow regulator, and the reservoir is additionally provided with out at top position
The mouth of a river.
Further technical scheme：The firing equipment includes aerator, and the aerator is communicated with reservoir air inlet,
Pipeline between the aerator and reservoir air inlet is provided with temperature control heating unit, and on the reservoir air-out is additionally provided with
Mouthful.
Further technical scheme：The forcing press includes jack, ball angle pressure head and drives the oil of jack motion
Road unit, the sphere end of the jack is flexibly connected with the sphere end of ball angle pressure head, and the reservoir top is provided with closure
Plate, the planar ends of the ball angle pressure head being connected with jack are acted perpendicularly on angle compression shear unit through seal cover board；Institute
State and pole is connected with the pressure head of ball angle, the displacement meter of vertical displacement value touches when the pole is with for measuring rock sample failure by shear
Head contacts, and the pole is axially located horizontal direction.
Further technical scheme：The angle compression shear unit includes upper fastening groove for bearing pressure, positioned at reservoir
The lower fastening groove of bottom, the angle variable plate for adjusting shear surface angle, the upper fastening groove, lower fastening groove notch block respectively relatively and in groove
Be provided with the angle variable plate, the cell wall of the upper fastening groove be provided with for the first fixing bolt by and upper fastening groove carried out with angle variable plate
The first arch screw bolt hole being fixedly connected, the cell wall of the lower fastening groove be provided with pass through for the second fixing bolt and by lower fastening groove with
The second arch screw bolt hole that angle variable plate is fixedly connected, the curvature in described the first arch screw bolt hole and the second arch screw bolt hole
Center superposition, the angle variable plate at the upper fastening groove, lower fastening groove is arranged symmetrically with regard to the center of curvature, described two angle variable plates point
Not Bao Kuo the first right angle backing plate, the second right angle backing plate, first right angle backing plate, the plate face of the second right angle backing plate are perpendicular to upper folder
The cell wall of groove, lower fastening groove, the first right angle backing plate, the second right angle backing plate right angle it is positioned opposite and constitute sky for accommodating rock sample
The side plate face of chamber, the first right angle backing plate side plate face and the second right angle backing plate be respectively parallel to rock sample one group is relative
Face, and the side plate face of the first right angle backing plate side plate face and the second right angle backing plate is respectively positioned at the two of rock sample shear surface
Side, perpendicular to the side plate face described in the first right angle backing plate, the angle variable plate also includes being located in plate face the rock sample shear surface
For some scale holes that the fixing bolt of confession the 3rd for adjusting shear surface angle passes through, the 3rd fixing bolt is perpendicular to upper folder
Outside the groove end that groove, the cell wall of lower fastening groove and gear are leaned against.
Further technical scheme：The oil circuit unit includes oil pump, pedestal, oil pipe, and the oil pump is connected with oil pipe, institute
Oil pipe is stated through pedestal and jack is acted on, reversal valve is provided between the oil pump and pedestal, the pedestal is provided with and base
Bellows accumulator and pressure gauge that seat inner oil tube is communicated.
Further technical scheme：The air inlet, air outlet are located on seal cover board.
Further technical scheme：The upper fastening groove, lower fastening groove are the curved groove of flute length and upper fastening groove, lower fastening groove
The center of curvature overlaps, including being inserted perpendicularly into the groove and insertion depth is slightly smaller than the annulus section plate body of groove groove depth, the circle
The thickness of ring segment plate body coincide with the groove width of groove；The annulus section plate body is connected with plate face and circle away from another side of groove
The plate face of ring segment plate body is parallel and thickness more than annulus section plate body thickness flange, thickness of the flange along annulus section plate body
Direction protrudes from the both sides plate face of annulus section plate body, and the flange is arc-shaped side and curvature with the side of annulus section plate body junction
It coincide with the curvature of upper fastening groove, the arc-shaped slot of lower fastening groove, the flange is for connection the away from the side of annulus section plate body
Knee plate or the second right angle backing plate and the right-angle side identical with the first right angle backing plate or the second right angle backing plate plate face always.
Further technical scheme：The reservoir bottom is provided with roller bearing frame and some being parallel to each other put down positioned at same
In face and diameter cylindrical roller bearing small in ends broad in the middle, the roller bearing two ends are each passed through between the grade on roller bearing frame opposite face
Away from circular hole, the diameter with diameter greater than roller bearing two ends of the circular hole, the length direction of the roller bearing is described parallel to shear surface
Lower fastening groove is located on roller bearing.
Further technical scheme：The scale hole has 5 and is arranged in the plate face of the ring segment plate body.
The beneficial effects of the present invention is：
(1) the arrangement achieves rock sample drying and watering cycle process integrated with shearing test, simple structure, be easy to operation,
With low cost, easy to use, use range is wide, and long service life can be located with accurate simulation after different drying moistening cycles
The rock sample under different conditions, and shearing test research is carried out to rock sample, the destruction lotus of rock sample during real time record shearing test
Carry the displacement with vertical direction.In addition expandability is strong and wide application, for Geotechnical Engineering, hydraulic engineering and underground work
The research of rock mechanical characteristic during drying and watering cycle in the fields such as journey is with a wide range of applications.
(2) using water injection equipment rock sample can be made freely to satisfy water, using the thermal current circulation produced by firing equipment rock can be made
Sample Quick-air-drying, by controlling water-in and water-out flow velocity and air inlet gas flow temperature, can cause rock sample experience " full water-drying "
Recurrent state.
(3) using the 5 scale holes arranged on angle variable plate, the continuous tune of rock sample shear surface angle can effectively be realized
Section, because the first arch screw bolt hole for passing through for the first fixing bolt, the second fixing bolt, the second arch screw bolt hole are for arc
Shape, so when shearing inclination is adjusted, the first arch screw bolt hole or the second arch screw bolt hole that angle variable plate can be relatively described is entered
Row movement, is easy to find suitable fixing point and is fixed, and adjustment easily carries out the regulation of shearing inclination, whole after regulation
Individual device center of gravity can accurately, easily measure 5 groups of direct stress-shear stress combination without departing from centrage.
(4) the first right angle backing plate, the second right angle backing plate is adopted to avoid the flange in rock sample and angle variable plate in the present invention
Directly contact is worn and torn, and is conducive to the service life of extension fixture, improves test accuracy；Can by changing various sizes of right angle backing plate
With suitable for the test of the square rock sample 4 of the different length of sides.
(5) after the angle variable plate insertion upper fastening groove or lower fastening groove of said structure, the flange and annulus section plate body junction
Arc-shaped side edges are fully fitted with the arc-shaped slot of upper fastening groove and lower fastening groove and are contacted, and may further ensure that angle variable plate in process of the test
Will not rotate, and the center of gravity of whole angle compression shear unit is not deviated by, and increased the stability of assay device.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is the structural representation of angle compression shear unit in the present invention.
The concrete meaning of reference is as follows in accompanying drawing：
1- reaction frame 2- jack 3- balls angle pressure head 4- rock samples
5- angle compression shear unit 6- reservoir 7- air inlet 8- air outlet 9- water inlets
10- outlet 11- seal cover board 12- pole 13- displacement meters
14- flow regulator 15- water pumps rouse 16- temperature control heating unit 17- blower fans
18- bellows accumulator 19- pressure gauge 20- reversal valve 21- pump 22- pedestals
23- upper fastening grooves 24- the first fixing bolt 25- the first cylinder packing ring the first nuts of 26-
The nuts of the 3rd fixing bolt 29- scales hole 30- of 27- angle variable plates 28- the 3rd
The first right angles of 31- the second right angles of backing plate 32- backing plate 33- lower fastening grooves
34- the second fixing bolt 35- the second cylinder packing ring 36- the second nut 37- roller bearings
Specific embodiment
It is further described with reference to Fig. 1,2 pairs of present configurations and operation principle：
The compression shear test device of rock during a kind of drying and watering cycle, including angle compression shear unit 5, and vertical applying load
Forcing press of the lotus on angle compression shear unit 5, the device also includes reservoir 6, rock sample 4 in angle compression shear unit 5 is satisfied
The water injection equipment of water process, the firing equipment that hot gas drying process is carried out to rock sample 4 in angle compression shear unit 5, the angle pressure
Unit 5 is cut in reservoir 6, the reservoir 6 is communicated with water injection equipment, firing equipment.When using：First to angle compression shear
Rock sample 4 carries out drying and watering cycle process in unit 5, i.e., by water injection equipment to water filling in reservoir 6, treat water level slowly submergence rock sample
After 4, water filling stops, it is ensured that rock sample 4 is immersed in 48 hours in water so as in water-saturated state, then open the valve of outlet 10,
After draining terminates, the valve of outlet 10 is closed, then open air inlet 7, the valve of gas outlet 8, open firing equipment, allow hot blast to exist
Circulate 24 hours in reservoir 6, that is, complete a drying and watering cycle process；And then shearing test starts, and is applied by forcing press
Plus load is on angle compression shear unit 5, by record failure by shear load, shear surface angle, and destruction when rock sample 4 vertical
Displacement on direction；Can be according to test requirements document, repeat the above steps, at the same angle to through different dry and wet circular treatment
Under rock sample 4 carry out shearing test, or change shearing inclination shearing test carried out to rock sample 4, obtain at different drying and watering cycles
After reason, under different shearing inclinations, the displacement in the breaking load and vertical direction of rock sample 4.The reservoir 6 is had using high intensity
Machine glass.The arrangement achieves rock sample drying and watering cycle process integrated with shearing test, simple structure, be easy to operation, cost
It is cheap, the rock conditions under Jing drying and watering cycles effect can be accurately simulated, and measure its shearing mechanics parameter.
The water injection equipment includes water pump 15, and the water pump 15 communicates with reservoir water inlet 9, the water pump 15 and liquid storage
Pipeline between device water inlet 9 is provided with flow regulator 14, and the reservoir 6 is additionally provided with outlet at top position
10.The firing equipment includes aerator 17, and the aerator 17 communicates with reservoir air inlet 7, the aerator 17 with store up
Pipeline between liquid device air inlet 7 is provided with temperature control heating unit 16, and air outlet 8 is additionally provided with the reservoir 6.The air intake
Mouth 7, air outlet 8 is located at the upper of seal cover board 11.Water injection equipment, the course of work of firing equipment have been elaborated in leading portion
, just repeat no more herein.Generally speaking, using water pump 15 rock sample 4 can be made freely to satisfy water, using the heat produced by firing equipment
Circulation of air flow can make the Quick-air-drying of rock sample 4, by controlling water-in and water-out flow velocity and air inlet gas flow temperature, can cause rock sample 4
The recurrent state of experience " full water-drying ".Can be for outlet 10 is arranged at effect of the reservoir 6 at top position
Ensure that rock sample 4 is immersed in water fully, the air inlet 7, air outlet 8 are located on seal cover board 11 and can ensure that hot blast and rock sample 4
Be fully contacted, simulate reservoir level mechanical periodicity indoors and cause rock sample in " full such that it is able to accurate, real
The Circulation state of water-drying ".
The oil circuit unit that the forcing press is moved including jack 2, ball angle pressure head 3 and driving jack 2, described thousand
The sphere end on jin top 2 is flexibly connected with the sphere end of ball angle pressure head 3, is provided with seal cover board 11 at the top of the reservoir 6, it is described and
The planar ends of the ball angle pressure head 3 of the connection of jack 2 are acted perpendicularly on angle compression shear unit 5 through seal cover board 11；The ball
Pole 12 is connected with angle pressure head 3, the displacement meter 13 of vertical displacement value when the pole 12 is with for measuring 4 failure by shear of rock sample
Contact contact, the pole 12 is axially located horizontal direction.The oil circuit unit includes oil pump 21, pedestal 22, oil pipe, institute
State oil pump 21 to be connected with oil pipe, the oil pipe is through pedestal 22 and acts on jack 2, sets between the oil pump 21 and pedestal 22
There is reversal valve 20, the pedestal 22 is provided with the bellows accumulator 18 and pressure gauge 19 communicated with the inner oil tube of pedestal 22.Here
The activity of reservoir 6 is placed on the base of reaction frame 1.The planar ends top of jack 2 is put on the crossbeam of reaction frame 1.One oil
Pump 21 can control more than two sets loading systems by the how logical oil circuit joint of reversal valve 20, and the extensibility of instrument is stronger.
A kind of structure with regard to angle compression shear unit 5 is described below：
The angle compression shear unit 5 include the upper fastening groove 23 for bearing pressure, the lower fastening groove 33 positioned at reservoir bottom,
For adjusting the angle variable plate 27 of shear surface angle, the upper fastening groove 23, the notch of lower fastening groove 33 are arranged with respectively institute relatively and in groove
State angle variable plate 27, the cell wall of the upper fastening groove 23 is provided with and pass through for the first fixing bolt 24 and by upper fastening groove 23 and angle variable plate 27
The first arch screw bolt hole being fixedly connected, the cell wall of the lower fastening groove 33 is provided with and passes through and incite somebody to action for the second fixing bolt 34
The second arch screw bolt hole that lower fastening groove 33 and angle variable plate 27 are fixedly connected, described the first arch screw bolt hole and the second arc
The center of curvature of bolt hole overlaps, and the angle variable plate 27 at the upper fastening groove 23, lower fastening groove 33 is with regard to the symmetrical cloth of the center of curvature
Put, described two angle variable plates 27 respectively include the first right angle backing plate 31, the second right angle backing plate 32, first right angle backing plate 31,
The plate face of the second right angle backing plate 32 is perpendicular to upper fastening groove 23, the cell wall of lower fastening groove 33, the first right angle backing plate 31, the second right angle backing plate
32 right angle is positioned opposite and constitutes cavity for accommodating rock sample 4, the side plate face of first right angle backing plate 31 and second
The side plate face of right angle backing plate 32 is respectively parallel to one group of opposite face of rock sample 4, and the side plate face of first right angle backing plate 31
And second right angle backing plate 32 side plate face respectively positioned at the both sides of the shear surface of rock sample 4, the shear surface of the rock sample 4 is perpendicular to the
Side plate face described in knee plate 31 always, the angle variable plate 27 also includes being located in plate face is used for the confession for adjusting shear surface angle
Some scale holes 29 that 3rd fixing bolt 28 passes through, the 3rd fixing bolt 28 is perpendicular to upper fastening groove 23, lower fastening groove 33
Outside the groove end that cell wall and gear are leaned against.
Said structure is constituted when for clamping rock sample 4 to be measured using the first right angle backing plate 31, the second right angle backing plate 32
Cavity rock sample 4 is confined, because the angle variable plate 27 at upper fastening groove 23, lower fastening groove 33 is with regard to first arch screw bolt
The hole center of curvature is arranged symmetrically, so the first right angle backing plate 31, the second right angle backing plate 32 are also symmetrical with regard to the center of curvature
Arrangement, at the same the center of curvature should also with the center superposition of rock sample 4, in addition the angle variable plate 27 at upper fastening groove 23 is by high-strength
First fixing bolt 24 of degree, the first cylinder packing ring 25, the first nut 26 are fixed with upper fastening groove 23, the change at lower fastening groove 33
Gusset 27 is fixed by the second fixing bolt 34 of high intensity, the second cylinder packing ring 35, the second nut 36 with lower fastening groove 33,
The 3rd fixing bolt 28 of the plate face of angle variable plate 27 is fitted through simultaneously, you can realize angle variable plate 27 and upper fastening groove 23, lower fastening groove 33
Between relative position determination, the 3rd fixing bolt 28 corresponded to the different angles of shear through different scale holes 29
Degree, can be according to the needs of test, and when the scale hole 29 that the 3rd fixing bolt 28 is passed through is adjusted, angle variable plate 27 can be upper
Rotate in clip slot 23, lower fastening groove 33, due to the first arch screw bolt passed through for the first fixing bolt 24, the second fixing bolt 34
Hole, the second arch screw bolt hole are for arc, so the first arch screw bolt hole that angle variable plate 27 can be relatively described or the second arc
Bolt hole is moved, and is easy to find suitable fixing point and is fixed.
More specifically technical scheme, the upper fastening groove 23, lower fastening groove 33 be the curved groove of flute length and upper fastening groove 23,
The center of curvature of lower fastening groove 33 overlaps, and the angle variable plate 27 includes being inserted perpendicularly into the groove and insertion depth is slightly smaller than groove groove
Deep annulus section plate body, the thickness of the annulus section plate body coincide with the groove width of groove；The annulus section plate body is away from groove
Another side be connected with that plate face is parallel with the plate face of annulus section plate body and thickness more than annulus section plate body thickness flange, it is described convex
Plate protrudes from the both sides plate face of annulus section plate body along the thickness direction of annulus section plate body, and the flange is connected with annulus section plate body
The side at place is that arc-shaped side and curvature are coincide with the curvature of upper fastening groove 23, the arc-shaped slot of lower fastening groove 33, and the flange is away from circle
The side of ring segment plate body be for connect the first right angle backing plate 31 or the second right angle backing plate 32 and with the first right angle backing plate 31 or the
The identical right-angle side of the plate face of two right angle backing plate 32.
After the insertion upper fastening groove 23 of angle variable plate 27 of said structure or lower fastening groove 33, the flange and annulus section plate body junction
Arc-shaped side edges fully fit with the arc-shaped slot of upper fastening groove 23 and lower fastening groove 33 and contact, in may further ensure that process of the test
Angle variable plate 27 will not rotate, and the center of gravity of whole angle compression shear unit 5 is not deviated by, and increased stablizing for assay device
Property.
In rock sample 4 and angle variable plate 27 being avoided in the present invention using the first right angle backing plate 31, the second right angle backing plate 32
Flange directly contact is worn and torn, and is conducive to the service life of extension fixture, improves test accuracy；By changing various sizes of right angle pad
Plate goes for the test of the square rock sample 4 of the different length of sides.
The bottom of the reservoir 6 be provided with roller bearing frame and it is some be parallel to each other be generally aligned in the same plane in and in the middle of diameter
Big cylindrical roller bearing 37 small in ends, the two ends of the roller bearing 37 are each passed through the equidistant circular hole on roller bearing frame opposite face, institute
State the diameter with diameter greater than the two ends of roller bearing 37 of circular hole, the length direction of the roller bearing 37 parallel to shear surface, the lower fastening groove
33 are located on roller bearing 37.Roller bearing 37 can freely be rolled in the bottom of reservoir 6, and effectively reduce device along the shearing change of rock sample 4
The level friction in shape direction.Here the end of roller bearing 37 projects one section of cylinder, is easy at any time be fixed roller bearing 37.
The scale hole 29 has 5 and is arranged in the plate face of the ring segment plate body.The scale hole can be according to reality
Test request be set as representing respectively 45 ° of shearing inclination, 50 °, 60 °, 65 °, 70 °, the 3rd bolt 28 and scale hole 29, the 3rd spiral shell
Female 30 match, and by the way that the 3rd bolt 28 is inserted into different scale holes 29, and are locked with the 3rd nut 30, so that cutting
Tangent plane be in different angles, can accurately, easily measure 5 groups of direct stress, shear stress combination, it is ensured that assay device it is steady
Qualitative and test accuracy.Described shearing inclination is the angle of shear surface and horizontal direction.
Claims (9)
1. during a kind of drying and watering cycle rock compression shear test device, including angle compression shear unit (5), and vertical apply to carry
Forcing press of the lotus on angle compression shear unit (5), it is characterised in that：The device is also including reservoir (6), to angle compression shear unit
(5) interior rock sample (4) carries out the water injection equipment of full water process, carries out hot gas drying process to the interior rock sample (4) of angle compression shear unit (5)
Firing equipment, the angle compression shear unit (5) reservoir (6) and water injection equipment, heated and set in the reservoir (6)
It is standby to communicate；
The angle compression shear unit (5) includes upper fastening groove (23) for bearing pressure, positioned at the lower fastening groove of reservoir bottom
(33), for adjusting the angle variable plate (27) of shear surface angle, the upper fastening groove (23), lower fastening groove (33) notch be relative and groove in point
Be not arranged with the angle variable plate (27), the cell wall of the upper fastening groove (23) be provided with for the first fixing bolt (24) by and will be upper
The first arch screw bolt hole that clip slot (23) is fixedly connected with angle variable plate (27), the cell wall of the lower fastening groove (33) is provided with confession
Second fixing bolt (34) by and the second arch screw bolt hole for being fixedly connected lower fastening groove (33) and angle variable plate (27), institute
The the first arch screw bolt hole stated overlaps with the center of curvature in the second arch screw bolt hole, the upper fastening groove (23), lower fastening groove (33) place
Angle variable plate (27) be arranged symmetrically with regard to the center of curvature, described two angle variable plates (27) respectively include the first right angle backing plate
(31), the second right angle backing plate (32), first right angle backing plate (31), the plate face of the second right angle backing plate (32) are perpendicular to upper fastening groove
(23), the cell wall of lower fastening groove (33), the first right angle backing plate (31), the second right angle backing plate (32) right angle it is positioned opposite and constitute use
In the side plate of the cavity for accommodating rock sample (4), first right angle backing plate (31) side plate face and the second right angle backing plate (32)
Face is respectively parallel to one group of opposite face of rock sample (4), and first right angle backing plate (31) side plate face and the second right angle pad
, respectively positioned at the both sides of rock sample (4) shear surface, rock sample (4) shear surface is perpendicular to the first right angle pad for the side plate face of plate (32)
Side plate face described in plate (31), the angle variable plate (27) also includes being located in plate face is used for the confession the 3rd for adjusting shear surface angle
Some scale holes (29) that fixing bolt (28) passes through, the 3rd fixing bolt (28) is perpendicular to upper fastening groove (23), lower fastening groove
(33) outside the groove end that cell wall and gear is leaned against.
2. compression shear test device as claimed in claim 1, it is characterised in that：The water injection equipment includes water pump (15), described
Water pump (15) is communicated with reservoir water inlet (9), and the pipeline between the water pump (15) and reservoir water inlet (9) is provided with stream
Fast actuator (14), the reservoir (6) is additionally provided with outlet (10) at top position.
3. compression shear test device as claimed in claim 1, it is characterised in that：The firing equipment includes aerator (17), institute
State aerator (17) to communicate with reservoir air inlet (7), on the pipeline between the aerator (17) and reservoir air inlet (7)
Temperature control heating unit (16) is provided with, on the reservoir (6) air outlet (8) is additionally provided with.
4. compression shear test device as claimed in claim 3, it is characterised in that：The forcing press includes that jack (2), ball angle are pressed
Head (3) and the oil circuit unit of driving jack (2) motion, the sphere end of the jack (2) and the ball at ball angle pressure head (3)
Face end is flexibly connected, and reservoir (6) top is provided with seal cover board (11), the ball angle pressure head being connected with jack (2)
(3) planar ends are acted perpendicularly on angle compression shear unit (5) through seal cover board (11)；Connect on ball angle pressure head (3)
There is pole (12), the displacement meter (13) of vertical displacement value touches when the pole (12) is with for measuring rock sample (4) failure by shear
Head contacts, and the pole (12) is axially located horizontal direction.
5. compression shear test device as claimed in claim 4, it is characterised in that：The oil circuit unit includes oil pump (21), pedestal
(22), oil pipe, the oil pump (21) is connected with oil pipe, and the oil pipe is through pedestal (22) and acts on jack (2), the oil
Reversal valve (20) is provided between pump (21) and pedestal (22), the pedestal (22) is provided with the capsule communicated with pedestal (22) inner oil tube
Formula accumulator (18) and pressure gauge (19).
6. compression shear test device as claimed in claim 4, it is characterised in that：The air inlet (7), air outlet (8) are positioned at close
In capping plate (11).
7. compression shear test device as claimed in claim 1, it is characterised in that：The upper fastening groove (23), lower fastening groove (33) are groove
The curved groove of length and upper fastening groove (23), the center of curvature coincidence of lower fastening groove (33), the angle variable plate (27) is inserted including vertical
Enter the groove and insertion depth is slightly smaller than the annulus section plate body of groove groove depth, the thickness of the annulus section plate body and the groove of groove
Width coincide；The annulus section plate body is connected with that plate face is parallel with the plate face of annulus section plate body and thickness away from another side of groove
More than the flange of annulus section plate body thickness, the flange protrudes from the two of annulus section plate body along the thickness direction of annulus section plate body
Lateral plates, the flange is arc-shaped side and curvature and upper fastening groove (23), lower fastening groove (33) with the side of annulus section plate body junction
Arc-shaped slot curvature coincide, the flange away from the side of annulus section plate body be for connect the first right angle backing plate (31) or
Second right angle backing plate (32) and the right-angle side identical with the first right angle backing plate (31) or the second right angle backing plate (32) plate face.
8. compression shear test device as claimed in claim 1, it is characterised in that：Reservoir (6) bottom be provided with roller bearing frame, with
And it is some be parallel to each other be generally aligned in the same plane in and diameter cylindrical roller bearing (37) small in ends broad in the middle, the roller bearing (37)
Two ends are each passed through the equidistant circular hole on roller bearing frame opposite face, the circular hole it is straight with diameter greater than roller bearing (37) two ends
Footpath, parallel to shear surface, the lower fastening groove (33) is on roller bearing (37) for the length direction of the roller bearing (37).
9. compression shear test device as claimed in claim 7, it is characterised in that：The scale hole (29) has 5 and is arranged on institute
State in the plate face of annulus section plate body.
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