CN105181483A - 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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- CN105181483A CN105181483A CN201510677617.1A CN201510677617A CN105181483A CN 105181483 A CN105181483 A CN 105181483A CN 201510677617 A CN201510677617 A CN 201510677617A CN 105181483 A CN105181483 A CN 105181483A
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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, be specifically related to the compression shear test device of rock in a kind of drying and watering cycle process.
Background technology
Reservoir level cyclical variation causes Rock And Soil to be always in " dry-full water " active state, and the Geological Hazard caused thus has caused the attention of numerous scholar and engineering circles, and the interaction of research water petrofacies becomes the hot issue in Geotechnical Engineering.Water petrofacies interaction main manifestations is: the interaction of water petrofacies makes the mineralogical composition of Rock And Soil, factor of porosity, cementing matter and permutation and combination method thereof change, thus cause damage of rock, its intensity (particularly shear strength parameter) is caused to occur significantly to reduce, cause the destruction of soft rock, even cause the unstability of reservoir stability, the long-time stability of Geotechnical Engineering are produced and threatens.
The shop experiment common method measuring shear of rock intensity has: direct shear test, compression-shear test and triaxial compression test.Compression-shear test common are angle compression-shear test, twisting 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 such as equipment is simple, easy to operate.Different angle shearing testing utilizes pressure testing machine to apply vertical load, by special cornea, sillar sample is cut off along a shear surface, normal stress when a series of sillar destroys and shear stress can be obtained by changing the angle of shear surface, thus draw out strength envelope, try to achieve the mechanics parameter such as angle of internal friction and cohesion of rock.
To the conventional test methodologies being in rock character in drying and watering cycle process under reservoir level mechanical periodicity condition be: take out after cube rock sample submerges and freely absorbs water 48 hours by foundation " water power hydraulic engineering rock test code " (DL/T5368-2007), this rock sample is put into drying box, take out after dry 24 hours at carrying out 45 DEG C, cyclic process that this is " dry-full water ", the method is in the state of rock in drying and watering cycle process comparatively accurately under simulated reservoir water level mechanical periodicity.But at present the shortcomings such as test apparatus complexity, complex operation and somewhat expensive are existed for the affect experimental study of drying and watering cycle effect on the mechanical characteristic (shearing strength) of rock, less for the instrument of the shear test of rock in simulation drying and watering cycle.
Summary of the invention
The invention provides the compression shear test device of rock in a kind of drying and watering cycle process, this apparatus structure is simple, convenient operation, with low cost, can the angle of adjusting sample shear surface neatly, the rock conditions under drying and watering cycle effect can be simulated accurately, and measure its mechanics parameter.
In order to realize object of the present invention, present invention employs following technical scheme:
The compression shear test device of rock in a kind of drying and watering cycle process, comprise angle pressure and cut unit, and vertical imposed load cuts the pressing machine on unit in angle pressure, this device also comprises reservoir, angle pressure is cut rock sample in unit carry out full water treatment water injection equipment, rock sample in unit cut to angle pressure carry out the firing equipment of hot gas drying process, described angle pressure is cut unit and is positioned at reservoir, and described reservoir communicates with water injection equipment, firing equipment.
Further technical scheme: described water injection equipment comprises water pump, described water pump communicates with reservoir water inlet, and the pipeline between described water pump and reservoir water inlet is provided with flow regulator, and described reservoir is also provided with water delivering orifice near top position place.
Further technical scheme: described firing equipment comprises fan blower, described fan blower communicates with reservoir air inlet, and the pipeline between described fan blower and reservoir air inlet is provided with temperature control heating unit, and described reservoir is also provided with air outlet.
Further technical scheme: described pressing machine comprises lifting jack, ball angle pressure head and drives the oil circuit unit of lifting jack motion, the sphere end of described lifting jack is flexibly connected with the sphere end of ball angle pressure head, described reservoir top is provided with seal cover board, and the planar ends of the described ball angle pressure head be connected with lifting jack is cut on unit through the vertical angle pressure that acts on of seal cover board; Described ball angle pressure head is connected with pole, and described pole contacts with the contact of the displacement meter of perpendicular displacement value during for measuring rock sample shear failure, and described pole is axially positioned at horizontal direction.
Further technical scheme: described angle pressure is cut unit and comprised upper fastening groove for bearing pressure, be positioned at the lower fastening groove bottom reservoir, for adjusting the angle variable plate of shear surface angle, described upper fastening groove, lower fastening groove notch relatively and be arranged with described angle variable plate respectively in groove, the cell wall of described upper fastening groove be provided with for the first set bolt by and upper fastening groove and angle variable plate are fixed the first arch screw bolt hole be connected, the cell wall of described lower fastening groove be provided with for the second set bolt by and lower fastening groove and angle variable plate are fixed the second arch screw bolt hole be connected, the first described arch screw bolt hole overlaps with the center of curvature in the second arch screw bolt hole, described upper fastening groove, the angle variable plate at lower fastening groove place is arranged symmetrically with about the described center of curvature, described two angle variable plates comprise the first right angle backing plate respectively, second right angle backing plate, described first right angle backing plate, the plate face of the second right angle backing plate is perpendicular to upper fastening groove, the cell wall of lower fastening groove, first right angle backing plate, the right angle of the second right angle backing plate is positioned opposite and be configured for holding the cavity of rock sample, the side plate face of described first backing plate side plate face, right angle and the second right angle backing plate is parallel to one group of opposite face of rock sample respectively, and the side plate face of described first backing plate side plate face, right angle and the second right angle backing plate lays respectively at the both sides of rock sample shear surface, described rock sample shear surface is perpendicular to the side plate face described in the first right angle backing plate, described angle variable plate also comprises the some scale holes be located at for regulating the confession of shear surface angle the 3rd set bolt to pass through on plate face, described 3rd set bolt is perpendicular to upper fastening groove, outside the groove end that the cell wall of lower fastening groove and keeping off leans against.
Further technical scheme: described oil circuit unit comprises oil pump, pedestal, oil pipe, described oil pump is connected with oil pipe, described oil pipe passes pedestal and acts on lifting jack, be provided with reversal valve between described oil pump and pedestal, described pedestal is provided with the bellows accumulator and tensimeter that communicate with pedestal inner oil tube.
Further technical scheme: described air inlet, air outlet are positioned on seal cover board.
Further technical scheme: described upper fastening groove, lower fastening groove are the curved groove of flute length and the center of curvature of upper fastening groove, lower fastening groove overlaps, comprise and vertical insert described groove and insertion depth is slightly smaller than the annulus section plate body of groove groove depth, the thickness of described annulus section plate body is identical with the groove width of groove, described annulus section plate body is connected with away from another side of groove the flange that plate face and thickness parallel with the plate face of annulus section plate body is greater than annulus section plate body thickness, described flange protrudes from the biside plate face of annulus section plate body along the thickness direction of annulus section plate body, the side of described flange and annulus section plate body junction is arc-shaped side and curvature and upper fastening groove, the curvature of the arc-shaped slot of lower fastening groove is coincide, described flange is for connecting the first right angle backing plate or the second right angle backing plate and the right-angle side coincide with the first right angle backing plate or the second backing plate plate face, right angle away from the side of annulus section plate body.
Further technical scheme: be provided with bottom described reservoir roller bearing frame and some be parallel to each other be positioned at same plane and diameter cylindrical roller bearing small in ends broad in the middle, described roller bearing two ends are each passed through the equally spaced circular hole on roller bearing frame opposite face, the diameter of described circular hole is greater than the diameter at roller bearing two ends, the length direction of described roller bearing is parallel to shear surface, and described lower fastening groove is positioned on roller bearing.
Further technical scheme: described scale hole has 5 and is arranged on the plate face of described ring segment plate body.
Beneficial effect of the present invention is:
(1) the arrangement achieves the integrated of rock sample drying and watering cycle process and shear test, structure is simple, convenient operation, with low cost, easy to use, usable range is wide, long service life, rock sample under different conditions can be in by accurate simulation after different drying moistening cycle, and shear test research be carried out to rock sample, the failing load of rock sample and the displacement of vertical direction in real time record shear test process.Expandability is strong in addition and wide application, and the research being in rock mechanical characteristic in drying and watering cycle process for fields such as Geotechnical Engineering, hydraulic engineering and underground workss is with a wide range of applications.
(2) utilize water injection equipment that rock sample can be made freely to satisfy water, the thermal current circulation utilizing firing equipment to produce can make rock sample Quick-air-drying, by controlling water-in and water-out flow velocity and air inlet gas flow temperature, the recurrent state of rock sample experience " full water-drying " can be made.
(3) 5 scale holes that angle variable plate is arranged are utilized, effectively can achieve the continuous adjustment of rock sample shear surface angle, owing to supplying the first set bolt, the first arch screw bolt hole that second set bolt passes through, second arch screw bolt hole is arc, so when adjusting shearing inclination, angle variable plate can move relative to the first described arch screw bolt hole or the second arch screw bolt hole, be convenient to find suitable point of fixity to be fixed, the adjustment of shearing inclination is carried out in adjustment easily, after regulating, whole device center of gravity also can not disalignment, can be accurate, record 5 groups of normal stress-shear stress combination easily.
(4) adopt the first right angle backing plate in the present invention, the second right angle backing plate can avoid the direct contact wear of the flange in rock sample and angle variable plate, be conducive to the serviceable life of extension fixture, improve test accuracy; The test of the square rock sample 4 of the different length of side is gone for by the right angle backing plate changing different size.
(5) after the angle variable plate of said structure inserts upper fastening groove or lower fastening groove, the arc-shaped side edges of described flange and annulus section plate body junction and upper fastening groove are fully fitted with the arc-shaped slot of lower fastening groove and are contacted, can further in warranty test process angle variable plate can not rotate, and the center of gravity that whole angle pressure cuts unit can not depart from, and adds the stability of test unit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the structural representation that in the present invention, angle pressure cuts unit.
In accompanying drawing, the concrete meaning of Reference numeral is as follows:
1-reaction frame 2-lifting jack 3-ball angle pressure head 4-rock sample
5-angle pressure cuts unit 6-reservoir 7-air inlet 8-air outlet 9-water inlet
10-water delivering orifice 11-seal cover board 12-pole 13-displacement meter
14-flow regulator 15-water pump drum 16-temperature control heating unit 17-blower fan
18-bellows accumulator 19-tensimeter 20-reversal valve 21-pump 22-pedestal
23-upper fastening groove 24-first set bolt 25-first cylinder packing ring 26-first nut
27-angle variable plate 28-the 3rd set bolt 29-scale hole 30-the 3rd nut
Backing plate 32-second right angle, 31-first right angle backing plate 33-lower fastening groove
34-second set bolt 35-second cylinder packing ring 36-second nut 37-roller bearing
Embodiment
Be further described below in conjunction with Fig. 1,2 pairs of structures of the present invention and principle of work:
The compression shear test device of rock in a kind of drying and watering cycle process, comprise angle pressure and cut unit 5, and vertical imposed load cuts the pressing machine on unit 5 in angle pressure, this device also comprises reservoir 6, angle pressure is cut rock sample 4 in unit 5 carry out full water treatment water injection equipment, rock sample 4 in unit 5 cut to angle pressure carry out the firing equipment of hot gas drying process, described angle pressure is cut unit 5 and is positioned at reservoir 6, and described reservoir 6 communicates with water injection equipment, firing equipment.During use: first rock sample 4 in unit 5 is cut to angle pressure and carry out drying and watering cycle process, namely by water injection equipment to water filling in reservoir 6, after water level slowly submergence rock sample 4, water filling stops, ensure that rock sample 4 to be immersed in water 48 hours, it is made to be in water-saturated state, then water delivering orifice 10 valve is opened, after draining terminates, close water delivering orifice 10 valve, then open air intake opening 7, gas outlet 8 valve, open firing equipment, allow hot blast circulate 24 hours in reservoir 6, namely complete a drying and watering cycle process; And then shear test starts, and cuts on unit 5 by pressing machine imposed load in angle pressure, by record shear failure load, shear surface angle, and rock sample 4 displacement in vertical direction when destroying; Can according to testing requirements, repeat above-mentioned steps, with same angle, shear test is carried out to the rock sample 4 under wetting circular treatment through different dry, or change shearing inclination and shear test is carried out to rock sample 4, obtain different dry to wet after circular treatment, under different shearing inclination, the displacement in the failing load of rock sample 4 and vertical direction.Described reservoir 6 adopts high strength organic glass.The arrangement achieves the integrated of rock sample drying and watering cycle process and shear test, structure be simple, convenient operation, with low cost, the rock conditions under drying and watering cycle effect can be simulated accurately, and measure its shearing force mathematic(al) parameter.
Described water injection equipment comprises water pump 15, and described water pump 15 communicates with reservoir water inlet 9, and the pipeline between described water pump 15 and reservoir water inlet 9 is provided with flow regulator 14, and described reservoir 6 is also provided with water delivering orifice 10 near top position place.Described firing equipment comprises fan blower 17, and described fan blower 17 communicates with reservoir air inlet 7, and the pipeline between described fan blower 17 and reservoir air inlet 7 is provided with temperature control heating unit 16, and described reservoir 6 is also provided with air outlet 8.Described air inlet 7, air outlet 8 are positioned at the upper of seal cover board 11.The course of work of water injection equipment, firing equipment illustrates at leading portion, just repeats no more herein.Generally speaking, utilize water pump 15 that rock sample 4 can be made freely to satisfy water, the thermal current circulation utilizing firing equipment to produce can make rock sample 4 Quick-air-drying, by controlling water-in and water-out flow velocity and air inlet gas flow temperature, rock sample 4 can be made to experience the recurrent state of " full water-drying ".Being arranged at the effect of reservoir 6 near top position place for water delivering orifice 10 is to ensure that rock sample 4 is immersed in water fully, described air inlet 7, air outlet 8 are positioned at and seal cover board 11 can ensure fully contacting of hot blast and rock sample 4, thus can accurately, the real ringing state that cause rock sample to be in " full water-drying " at lab simulation reservoir level mechanical periodicity.
The oil circuit unit that described pressing machine comprises lifting jack 2, ball angle pressure head 3 and drives lifting jack 2 to move, the sphere end of described lifting jack 2 is flexibly connected with the sphere end of ball angle pressure head 3, described reservoir 6 top is provided with seal cover board 11, and the planar ends of the described ball angle pressure head 3 be connected with lifting jack 2 is cut on unit 5 through the vertical angle pressure that acts on of seal cover board 11; Described ball angle pressure head 3 is connected with pole 12, and described pole 12 contacts with the contact of the displacement meter 13 of perpendicular displacement value during for measuring rock sample 4 shear failure, and described pole 12 is axially positioned at horizontal direction.Described oil circuit unit comprises oil pump 21, pedestal 22, oil pipe, described oil pump 21 is connected with oil pipe, described oil pipe passes pedestal 22 and acts on lifting jack 2, be provided with reversal valve 20 between described oil pump 21 and pedestal 22, described pedestal 22 is provided with the bellows accumulator 18 and tensimeter 19 that communicate with pedestal 22 inner oil tube.Here reservoir 6 activity is placed on the base of reaction frame 1.The planar ends top of lifting jack 2 is put on the crossbeam of reaction frame 1.An oil pump 21 can control the above loading system of two covers by the how logical oil circuit joint of reversal valve 20, and the extensibility of instrument is stronger.
Introduce a kind of structure of cutting unit 5 about angle pressure below:
Described angle pressure is cut unit 5 and is comprised upper fastening groove 23 for bearing pressure, be positioned at the lower fastening groove 33 bottom reservoir, for adjusting the angle variable plate 27 of shear surface angle, described upper fastening groove 23, lower fastening groove 33 notch relatively and be arranged with described angle variable plate 27 in groove respectively, the cell wall of described upper fastening groove 23 is provided with and passes through for the first set bolt 24 and upper fastening groove 23 and angle variable plate 27 be fixed the first arch screw bolt hole be connected, the cell wall of described lower fastening groove 33 is provided with and passes through for the second set bolt 34 and lower fastening groove 33 and angle variable plate 27 be fixed the second arch screw bolt hole be connected, the first described arch screw bolt hole overlaps with the center of curvature in the second arch screw bolt hole, described upper fastening groove 23, the angle variable plate 27 at lower fastening groove 33 place is arranged symmetrically with about the described center of curvature, described two angle variable plates 27 comprise the first right angle backing plate 31 respectively, second right angle backing plate 32, described 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, first right angle backing plate 31, the right angle of the second right angle backing plate 32 is positioned opposite and be configured for holding the cavity of rock sample 4, the side plate face of described first right angle backing plate 31 side plate face and the second right angle backing plate 32 is parallel to one group of opposite face of rock sample 4 respectively, and the side plate face of described first right angle backing plate 31 side plate face and the second right angle backing plate 32 lays respectively at the both sides of rock sample 4 shear surface, described rock sample 4 shear surface is perpendicular to the side plate face described in the first right angle backing plate 31, described angle variable plate 27 also comprises the some scale holes 29 be located at for regulating the confession of shear surface angle the 3rd set bolt 28 to pass through on plate face, described 3rd set bolt 28 is perpendicular to upper fastening groove 23, outside the groove end that the cell wall of lower fastening groove 33 and keeping off leans against.
Said structure is when for clamping rock sample 4 to be measured, utilize the first right angle backing plate 31, the cavity that second right angle backing plate 32 is formed is confined rock sample 4, due to upper fastening groove 23, the angle variable plate 27 at lower fastening groove 33 place is arranged symmetrically with about the described first arch screw bolt hole center of curvature, so the first right angle backing plate 31, second right angle backing plate 32 is also arranged symmetrically with about this center of curvature, simultaneously this center of curvature should also with the center superposition of rock sample 4, the angle variable plate 27 at upper fastening groove 23 place passes through the first set bolt 24 of high strength in addition, first cylinder packing ring 25, first nut 26 is fixed with upper fastening groove 23, the angle variable plate 27 at lower fastening groove 33 place passes through the second set bolt 34 of high strength, second cylinder packing ring 35, second nut 36 is fixed with lower fastening groove 33, fit through the 3rd set bolt 28 in angle variable plate 27 plate face simultaneously, angle variable plate 27 and upper fastening groove 23 can be realized, the determination of the relative position between lower fastening groove 33, described 3rd set bolt 28 passes the different shearing inclination of different scale holes 29 i.e. correspondence, can according to the needs of test, when the scale hole 29 that adjustment the 3rd set bolt 28 passes, angle variable plate 27 can at upper fastening groove 23, rotate in lower fastening groove 33, owing to supplying the first set bolt 24, the first arch screw bolt hole that second set bolt 34 passes through, second arch screw bolt hole is arc, so angle variable plate 27 can move relative to the first described arch screw bolt hole or the second arch screw bolt hole, be convenient to find suitable point of fixity to be fixed.
More specifically technical scheme, described upper fastening groove 23, lower fastening groove 33 are the curved groove of flute length and the center of curvature of upper fastening groove 23, lower fastening groove 33 overlaps, described angle variable plate 27 comprises and vertical inserts described groove and insertion depth is slightly smaller than the annulus section plate body of groove groove depth, and the thickness of described annulus section plate body is identical with the groove width of groove, described annulus section plate body is connected with away from another side of groove the flange that plate face and thickness parallel with the plate face of annulus section plate body is greater than annulus section plate body thickness, described flange protrudes from the biside plate face of annulus section plate body along the thickness direction of annulus section plate body, the side of described flange and annulus section plate body junction is arc-shaped side and curvature and upper fastening groove 23, the curvature of the arc-shaped slot of lower fastening groove 33 is coincide, described flange is for connecting the first right angle backing plate 31 or the second right angle backing plate 32 and the right-angle side coincide with the first right angle backing plate 31 or the second right angle backing plate 32 plate face away from the side of annulus section plate body.
After the angle variable plate 27 of said structure inserts upper fastening groove 23 or lower fastening groove 33, the arc-shaped side edges of described flange and annulus section plate body junction and upper fastening groove 23 are fully fitted with the arc-shaped slot of lower fastening groove 33 and are contacted, can further in warranty test process angle variable plate 27 can not rotate, and the center of gravity that whole angle pressure cuts unit 5 can not depart from, and adds the stability of test unit.
Adopt the first right angle backing plate 31, second right angle backing plate 32 can avoid rock sample 4 and the direct contact wear of flange in angle variable plate 27 in the present invention, be conducive to the serviceable life of extension fixture, improve test accuracy; The test of the square rock sample 4 of the different length of side is gone for by the right angle backing plate changing different size.
Be provided with bottom described reservoir 6 roller bearing frame and some be parallel to each other be positioned at same plane and diameter cylindrical roller bearing 37 small in ends broad in the middle, described roller bearing 37 two ends are each passed through the equally spaced circular hole on roller bearing frame opposite face, the diameter of described circular hole is greater than the diameter at roller bearing 37 two ends, the length direction of described roller bearing 37 is parallel to shear surface, and described lower fastening groove 33 is positioned on roller bearing 37.Roller bearing 37 can bottom reservoir 6 Free-rolling, and effectively reduce device along the level friction in rock sample 4 detrusion direction.Here the outstanding one section of cylinder in roller bearing 37 end, is convenient to be fixed roller bearing 37 at any time.
Described scale hole 29 has 5 and is arranged on the plate face of described ring segment plate body.This scale hole can according to actual test request be set as representing respectively shearing inclination 45 °, 50 °, 60 °, 65 °, 70 °, 3rd bolt 28 matches with scale hole 29, the 3rd nut 30, by the 3rd bolt 28 is inserted different scale holes 29, and lock with the 3rd nut 30, different angles is in make shear surface, 5 groups of normal stress, shear stress combination can be recorded accurately, easily, ensure that stability and the test accuracy of test unit.Described shearing inclination is the angle of shear surface and horizontal direction.
Claims (10)
1. the compression shear test device of rock in a drying and watering cycle process, comprise angle pressure and cut unit (5), and vertical imposed load cuts the pressing machine on unit (5) in angle pressure, it is characterized in that: this device also comprises reservoir (6), the water injection equipment that unit (5) interior rock sample (4) carries out full water treatment is cut to angle pressure, the firing equipment that unit (5) interior rock sample (4) carries out hot gas drying process is cut to angle pressure, described angle pressure is cut unit (5) and is positioned at reservoir (6), described reservoir (6) and water injection equipment, firing equipment communicates.
2. compression shear test device as claimed in claim 1, it is characterized in that: described water injection equipment comprises water pump (15), described water pump (15) communicates with reservoir water inlet (9), pipeline between described water pump (15) and reservoir water inlet (9) is provided with flow regulator (14), and described reservoir (6) is also provided with water delivering orifice (10) near top position place.
3. compression shear test device as claimed in claim 1, it is characterized in that: described firing equipment comprises fan blower (17), described fan blower (17) communicates with reservoir air inlet (7), pipeline between described fan blower (17) and reservoir air inlet (7) is provided with temperature control heating unit (16), described reservoir (6) is also provided with air outlet (8).
4. the compression shear test device as described in claim 1 or 3, it is characterized in that: the oil circuit unit that described pressing machine comprises lifting jack (2), ball angle pressure head (3) and drives lifting jack (2) to move, the sphere end of described lifting jack (2) is flexibly connected with the sphere end at ball angle pressure head (3), described reservoir (6) top is provided with seal cover board (11), and the planar ends at described ball angle pressure head (3) be connected with lifting jack (2) is cut on unit (5) through the vertical angle pressure that acts on of seal cover board (11); Described ball angle pressure head (3) is connected with pole (12), described pole (12) contacts with the contact of the displacement meter (13) of perpendicular displacement value during for measuring rock sample (4) shear failure, and described pole (12) is axially positioned at horizontal direction.
5. compression shear test device as claimed in claim 1, it is characterized in that: described angle pressure is cut unit (5) and comprised upper fastening groove (23) for bearing pressure, be positioned at the lower fastening groove (33) bottom reservoir, for adjusting the angle variable plate (27) of shear surface angle, described upper fastening groove (23), lower fastening groove (33) notch relatively and be arranged with described angle variable plate (27) in groove respectively, the cell wall of described upper fastening groove (23) is provided with and supplies the first set bolt (24) pass through and upper fastening groove (23) and angle variable plate (27) be fixed the first arch screw bolt hole be connected, the cell wall of described lower fastening groove (33) is provided with and supplies the second set bolt (34) pass through and lower fastening groove (33) and angle variable plate (27) be fixed the second arch screw bolt hole be connected, the first described arch screw bolt hole overlaps with the center of curvature in the second arch screw bolt hole, described upper fastening groove (23), the angle variable plate (27) at lower fastening groove (33) place is arranged symmetrically with about the described center of curvature, described two angle variable plates (27) comprise the first right angle backing plate (31) respectively, second right angle backing plate (32), described 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), first right angle backing plate (31), the right angle of the second right angle backing plate (32) positioned opposite and be configured for hold rock sample (4) cavity, the side plate face of described first right angle backing plate (31) side plate face and the second right angle backing plate (32) is parallel to one group of opposite face of rock sample (4) respectively, and the side plate face of described first right angle backing plate (31) side plate face and the second right angle backing plate (32) lays respectively at the both sides of rock sample (4) shear surface, described rock sample (4) shear surface is perpendicular to the side plate face described in the first right angle backing plate (31), described angle variable plate (27) also comprises the some scale holes (29) be located at for regulating the confession of shear surface angle the 3rd set bolt (28) to pass through on plate face, described 3rd set bolt (28) is perpendicular to upper fastening groove (23), outside the groove end that the cell wall of lower fastening groove (33) and keeping off leans against.
6. compression shear test device as claimed in claim 4, it is characterized in that: described oil circuit unit comprises oil pump (21), pedestal (22), oil pipe, described oil pump (21) is connected with oil pipe, described oil pipe passes pedestal (22) and acts on lifting jack (2), be provided with reversal valve (20) between described oil pump (21) and pedestal (22), described pedestal (22) is provided with the bellows accumulator (18) and tensimeter (19) that communicate with pedestal (22) inner oil tube.
7. compression shear test device as claimed in claim 4, is characterized in that: described air inlet (7), air outlet (8) are positioned on seal cover board (11).
8. compression shear test device as claimed in claim 5, it is characterized in that: described upper fastening groove (23), lower fastening groove (33) for the curved groove of flute length and the center of curvature of upper fastening groove (23), lower fastening groove (33) overlap, described angle variable plate (27) comprises and vertical inserts described groove and insertion depth is slightly smaller than the annulus section plate body of groove groove depth, and the thickness of described annulus section plate body is identical with the groove width of groove, described annulus section plate body is connected with away from another side of groove the flange that plate face and thickness parallel with the plate face of annulus section plate body is greater than annulus section plate body thickness, described flange protrudes from the biside plate face of annulus section plate body along the thickness direction of annulus section plate body, the side of described flange and annulus section plate body junction is arc-shaped side and curvature and upper fastening groove (23), the curvature of the arc-shaped slot of lower fastening groove (33) is coincide, described flange is for connecting the first right angle backing plate (31) or the second right angle backing plate (32) and the right-angle side coincide with the first right angle backing plate (31) or the second right angle backing plate (32) plate face away from the side of annulus section plate body.
9. compression shear test device as claimed in claim 5, it is characterized in that: described reservoir (6) bottom be provided with roller bearing frame and some be parallel to each other be positioned at same plane and diameter cylindrical roller bearing (37) small in ends broad in the middle, described roller bearing (37) two ends are each passed through the equally spaced circular hole on roller bearing frame opposite face, the diameter of described circular hole is greater than the diameter at roller bearing (37) two ends, the length direction of described roller bearing (37) is parallel to shear surface, and described lower fastening groove (33) is positioned on roller bearing (37).
10. compression shear test device as claimed in claim 8, is characterized in that: described scale hole (29) has 5 and is arranged on the plate face of described ring segment plate body.
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| CN201510677617.1A CN105181483B (en) | 2015-10-15 | 2015-10-15 | Compression-shear testing apparatus for rock in dry-wet cyclic process |
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| CN201510677617.1A CN105181483B (en) | 2015-10-15 | 2015-10-15 | Compression-shear testing apparatus for rock in dry-wet cyclic process |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105486583A (en) * | 2016-01-25 | 2016-04-13 | 重庆交通大学 | Soil body two-dimensional fracture testing method and device |
| CN105606462A (en) * | 2016-01-01 | 2016-05-25 | 三峡大学 | Device and method for measuring rock sample shear strength indexes at different schistosity angles |
| CN105628496A (en) * | 2016-03-22 | 2016-06-01 | 北京航空航天大学 | Multifunctional shearing test fixture used for composite material parameter identification |
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| CN112504872A (en) * | 2020-11-19 | 2021-03-16 | 贵州省水利水电勘测设计研究院有限公司 | Rock structural surface shearing creep device capable of realizing dry-wet circulation |
| CN112710564A (en) * | 2020-12-16 | 2021-04-27 | 中国科学院地质与地球物理研究所 | Fracture surface variable-angle shear test system |
| CN113029752A (en) * | 2021-03-15 | 2021-06-25 | 孟舒然 | Dry-wet circulating device for rock-soil mechanical test |
| CN113295514A (en) * | 2021-06-11 | 2021-08-24 | 王忠波 | Pulling and pressing equipment for testing corrosion resistance and shearing resistance of anchor rod |
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| CN105606462A (en) * | 2016-01-01 | 2016-05-25 | 三峡大学 | Device and method for measuring rock sample shear strength indexes at different schistosity angles |
| CN105486583A (en) * | 2016-01-25 | 2016-04-13 | 重庆交通大学 | Soil body two-dimensional fracture testing method and device |
| CN105628496A (en) * | 2016-03-22 | 2016-06-01 | 北京航空航天大学 | Multifunctional shearing test fixture used for composite material parameter identification |
| CN105891014B (en) * | 2016-04-29 | 2019-01-01 | 中国地质大学（武汉） | A kind of Rock And Soil shear rheology instrument considering drying and watering cycle damage effect |
| CN105891014A (en) * | 2016-04-29 | 2016-08-24 | 中国地质大学（武汉） | Rock and soil body shear rheometer giving consideration to dry-wet cyclic damage effect |
| CN106018126A (en) * | 2016-05-24 | 2016-10-12 | 西安长庆科技工程有限责任公司 | Soil mass dry-wet circulating annular shearing instrument capable of measuring humidity |
| CN106018126B (en) * | 2016-05-24 | 2018-11-13 | 西安长庆科技工程有限责任公司 | A kind of measurable soil body drying and watering cycle ring shear apparatus of humidity |
| CN106092773A (en) * | 2016-06-12 | 2016-11-09 | 三峡大学 | A kind of simulation soaks Soil Direct Shear assay device and the method air-drying Circulation |
| CN106092773B (en) * | 2016-06-12 | 2019-02-22 | 三峡大学 | The Soil Direct Shear experimental rig and method of ringing are impregnated-are air-dried in a kind of simulation |
| CN106198200A (en) * | 2016-07-06 | 2016-12-07 | 哈尔滨理工大学 | A kind of multi-angle compression test fixture bearing heavy duty |
| CN112504872A (en) * | 2020-11-19 | 2021-03-16 | 贵州省水利水电勘测设计研究院有限公司 | Rock structural surface shearing creep device capable of realizing dry-wet circulation |
| CN112710564A (en) * | 2020-12-16 | 2021-04-27 | 中国科学院地质与地球物理研究所 | Fracture surface variable-angle shear test system |
| CN113029752A (en) * | 2021-03-15 | 2021-06-25 | 孟舒然 | Dry-wet circulating device for rock-soil mechanical test |
| CN113295514A (en) * | 2021-06-11 | 2021-08-24 | 王忠波 | Pulling and pressing equipment for testing corrosion resistance and shearing resistance of anchor rod |
| CN113295514B (en) * | 2021-06-11 | 2022-07-01 | 王忠波 | Pulling and pressing equipment for testing corrosion resistance and shearing resistance of anchor rod |
| CN113447361A (en) * | 2021-07-19 | 2021-09-28 | 中国科学院地质与地球物理研究所 | Variable angle loading testing machine |
| CN114109457A (en) * | 2021-10-21 | 2022-03-01 | 湖南科技大学 | Coal seam angle-variable shearing device with synchronous self-adaptive cutting cushion blocks |
| CN114109457B (en) * | 2021-10-21 | 2023-12-08 | 湖南科技大学 | Coal seam variable angle shearing device with synchronous self-adaptive cutting cushion block |
| CN117990469A (en) * | 2024-04-02 | 2024-05-07 | 成都理工大学 | Glacier ice sample preparation system and test method thereof |
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