CN110672421B - Rock tension-compression shear seepage coupling rheological experiment device - Google Patents

Rock tension-compression shear seepage coupling rheological experiment device Download PDF

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Publication number
CN110672421B
CN110672421B CN201910797810.7A CN201910797810A CN110672421B CN 110672421 B CN110672421 B CN 110672421B CN 201910797810 A CN201910797810 A CN 201910797810A CN 110672421 B CN110672421 B CN 110672421B
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Prior art keywords
seat
base
transmission
shearing box
vertical
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CN110672421A (en
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李芳�
李奎朋
张福长
屈浩
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Cubic Tongda Tianjin Experimental Instrument Co ltd
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Lifang Tongda Industrial Tianjin Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/08Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
    • G01N3/10Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/0806Details, e.g. sample holders, mounting samples for testing
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08Investigating permeability, pore-volume, or surface area of porous materials
    • G01N15/082Investigating permeability by forcing a fluid through a sample
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • G01N3/04Chucks
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/24Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0016Tensile or compressive
    • G01N2203/0017Tensile
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0014Type of force applied
    • G01N2203/0026Combination of several types of applied forces
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/003Generation of the force
    • G01N2203/0042Pneumatic or hydraulic means
    • G01N2203/0044Pneumatic means
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/0058Kind of property studied
    • G01N2203/006Crack, flaws, fracture or rupture
    • G01N2203/0067Fracture or rupture
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2203/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N2203/02Details not specific for a particular testing method
    • G01N2203/06Indicating or recording means; Sensing means
    • G01N2203/067Parameter measured for estimating the property
    • G01N2203/0682Spatial dimension, e.g. length, area, angle

Abstract

The invention discloses a rock tension-compression shearing seepage coupling rheological experiment device which comprises a base and a top seat arranged above the base, wherein four mounting bolts are symmetrically arranged on the front and back of the base, a transmission seat is arranged between the base and the top seat, an upper shearing box and a lower shearing box are arranged between the transmission seat and the base from top to bottom, grooves are respectively arranged on opposite sides of the upper shearing box and the lower shearing box in a concave mode, the two grooves are matched to form a detection cavity, a rock sample is placed in the detection cavity, a vertical loading mechanism is fixedly arranged on the top of the top seat, the vertical loading mechanism comprises a vertical cylinder, the vertical cylinder is fixedly arranged on the top of the top seat, and two side base plates are symmetrically arranged between the base and the top seat. The device solves the problem that the rock sample is complex and inconvenient to replace in the existing rock tension-compression shear seepage coupling rheological experimental device, and has the characteristics of high automation degree and convenience in operation.

Description

Rock tension-compression shear seepage coupling rheological experiment device
Technical Field
The invention relates to the technical field of rock mechanics experimental equipment, in particular to a rock tension-compression shear seepage coupling rheological experimental device.
Background
The research on the permeability characteristics of the rock is an important research subject in rock mechanics at present, and has very important engineering background and significance. However, due to the existence of a certain amount of underground water, the mutual coupling action of water and rock is usually involved, mainly the osmotic water pressure affects the stress distribution condition of surrounding rock, the stress field of the rock is changed, and the redistribution of the stress causes the change of the osmotic characteristics of the rock, thereby causing the change of the seepage field. Such as dam foundation, tunnel or cave excavation, oil and gas exploitation, etc., groundwater is an important factor affecting the stability of rock engineering.
Rock draws presses shear seepage flow coupling rheology experimental apparatus when testing, needs often to change the rock sample and tests, however because horizontal loading mechanism and vertical loading mechanism's influence, the change process of present experimental apparatus rock sample has inconveniently, leads to the rock sample change process extremely inconvenient, influences efficiency of software testing, consequently need to design a rock draws and presses shear seepage flow coupling rheology experimental apparatus urgently.
Disclosure of Invention
The invention aims to solve the defects in the prior art, such as: the change process of present experimental apparatus rock sample has inconveniently, leads to the rock sample change process very inconvenient, influences efficiency of software testing.
In order to achieve the purpose, the invention adopts the following technical scheme:
a rock tension-compression shearing seepage coupling rheological experiment device comprises a base and a top seat arranged above the base, wherein four mounting bolts are symmetrically arranged on the base front and back, a transmission seat is arranged between the base and the top seat, an upper shearing box and a lower shearing box are arranged between the transmission seat and the base from top to bottom, grooves are respectively concavely arranged on one opposite sides of the upper shearing box and the lower shearing box, the two grooves are matched to form a detection cavity, a rock sample is placed in the detection cavity, a vertical loading mechanism is fixedly arranged on the top of the top seat, the vertical loading mechanism comprises a vertical cylinder, the vertical cylinder is fixedly arranged on the top of the top seat, an output end of the vertical cylinder is fixedly connected with a vertical transmission plate, and the vertical transmission plate and the transmission seat, and the upper shearing box and the transmission seat are clamped through clamping mechanisms;
two side base plates are symmetrically arranged between the base and the top seat, a horizontal loading mechanism is arranged on one side base plate, the horizontal loading mechanism comprises a horizontal cylinder, the horizontal cylinder is fixed on one side base plate, a horizontal transmission plate is fixedly connected with the driving end of the horizontal cylinder, and the horizontal transmission plate abuts against the upper shearing box;
the clamping mechanism comprises adjusting motors arranged on one sides of two side base plates in a back-to-back manner, threaded screw rods are arranged on the opposite sides of the two side base plates, the adjusting motors are used for driving the threaded screw rods to rotate, the threaded screw rods are positioned on two sides of the transmission seat, ball nuts are in threaded connection with the threaded screw rods, each ball nut is fixedly provided with a first snap ring and a second snap ring through two connecting rods which are symmetrically arranged, the second snap ring is positioned below the first snap ring, the vertical transmission plate is positioned between the transmission seat and the two first snap rings, the top of the upper shearing box is provided with an outer edge, the outer edge is positioned between the transmission seat and the two second snap rings, the first snap rings and the second snap rings are inserted with inserting columns, one end of each inserting column is fixedly provided with a first permanent magnet block, and the top and the bottom of the transmission seat are symmetrically concavely provided with two positioning grooves, a second electromagnetic block matched with the first permanent magnet block is fixedly arranged in each positioning groove;
the upper shearing box is fixed with a vertical displacement detector, the outer edge of the top of the upper shearing box is symmetrically and concavely provided with two detection grooves, each detection groove is internally provided with a horizontal displacement detector, the upper shearing box and the lower shearing box are symmetrically provided with water seepage holes communicated with the inside, and each side substrate is fixedly embedded with two pressure pumps.
Preferably, each first snap ring and each second snap ring are semicircular structures, and a whole circular ring structure can be formed by matching the two first snap rings and the two second snap rings.
Preferably, one end, far away from the side base plate, of each threaded screw rod is rotatably connected with a limiting plate, a distance is reserved between each two limiting plates and the transmission seat, and the distance is 1cm-2 cm.
Preferably, two fixing rods are symmetrically fixed on each side substrate and are respectively and fixedly connected with the base and the top seat through positioning nuts.
Preferably, the included angle between each water seepage hole and the horizontal plane is 45 degrees.
Preferably, the top and the bottom of transmission seat all are equipped with the spout in a concave way, vertical driving plate pegs graft in the spout at transmission seat top and accomplish the joint through two first snap rings, go up the outer edge at shearing box top and peg graft in the spout of transmission seat bottom and accomplish through the second snap ring and connect, there is the slide space between the outer edge at shearing box top and the inner wall of transmission seat bottom spout.
Preferably, a second permanent magnet is fixedly mounted at one end, far away from the first permanent magnet, of each inserting column, and a first electromagnetic block used for being matched with the second permanent magnet is fixed on each first clamping ring and each second clamping ring.
Preferably, each first snap ring and each second snap ring are intra-annular all to run through and have been seted up smooth mouthful, smooth mouthful is the stairstepping, insert post fixed mounting has the stopper, the stopper slides and pegs graft in smooth mouthful.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the rock sample is pulled and pressed and sheared through the vertical cylinder, the vertical transmission plate, the transmission seat, the first snap ring, the horizontal cylinder, the horizontal transmission plate, the upper shearing box and the lower shearing box, the vertical cylinder provides a vertical upward preset pulling force for the upper shearing box, the horizontal cylinder provides a horizontal preset pushing force for the upper shearing box, when the rock sample is broken, the upper shearing box and the lower shearing box can be separated, so that a pulling and pressing shearing experiment for the rock sample is completed, the vertical displacement of the upper shearing box is detected through the vertical displacement detector, the horizontal displacement of the upper shearing box is monitored through the horizontal displacement detector, the fastening and installation of the base on the workbench is facilitated through the four installation bolts, and the rock sample shearing device has the characteristic of stable installation;
2. according to the invention, water is injected into the water seepage holes through the pressure pump, so that a seepage experiment can be carried out on a rock sample, when a coupling experiment is required, water can be injected through any two water seepage holes to realize coupling flow, a plurality of water seepage holes can be simultaneously injected to complete the coupling experiment, different modes can be adopted to carry out the experiment, data after the experiment is collected and analyzed, and the accuracy of the experiment result is favorably improved;
3. the side base plate is convenient to disassemble and assemble between the base and the top seat through the fixing rod and the positioning nut, and the side base plate has the characteristics of simplicity and convenience in disassembly and assembly;
4. according to the invention, through the matching of the second permanent magnet, the first electromagnetic block, the first permanent magnet and the second electromagnetic block, the automatic positioning of the first snap ring and the second snap ring on the transmission seat is realized, the device has the characteristic of stable installation, the transmission of the upper shearing box by the vertical cylinder is realized, and meanwhile, the device has the characteristic of convenient disassembly and replacement, and the rock sample is convenient to replace, so that the use of an experimental device is convenient;
5. the invention realizes the position adjustment of the first snap ring and the second snap ring through the adjusting motor, the threaded screw rod, the ball nut and the connecting rod, realizes the selective clamping of the vertical transmission plate and the upper shearing box, has the characteristic of high automation degree, and further facilitates the replacement of rock samples.
Drawings
FIG. 1 is a schematic structural diagram of a rock tension-compression shear seepage coupling rheological experimental device provided by the invention;
FIG. 2 is a schematic structural diagram of a driving plate of a rock tension-compression shear-seepage coupling rheological experimental device in a top view;
FIG. 3 is an enlarged view of the structure at A in FIG. 1;
fig. 4 is an enlarged view of the structure at B of fig. 1.
In the figure: the device comprises a base, a top seat, a vertical cylinder, a side base plate, a fixing rod, a positioning nut, a vertical transmission plate, a shearing box, a water seepage hole, a rock sample, a horizontal cylinder, a horizontal transmission plate, a 14-pressing pump, a vertical displacement detector, a mounting bolt, a regulating motor, a limiting plate, a threaded screw rod, a ball nut, a connecting rod, a first clamping ring, a second permanent magnet, a first electromagnetic block, a 25-limiting block, a first permanent magnet, a second electromagnetic block, a 27-second electromagnetic block, an inserting column, a horizontal displacement detector, a sliding groove, a 31-second clamping ring and a 32 transmission seat, wherein the vertical transmission plate is 7, the shearing box is arranged on the 8, the lower shearing box is 9, the water seepage hole is 10, the rock sample is 11, the horizontal cylinder is 12, the horizontal transmission plate is 13, the 14-pressing pump, the vertical displacement detector is 15, the mounting bolt is 16, the regulating motor, the limiting plate is 18, the threaded screw rod, the ball nut, the first clamping ring is 22-pressing ring, the second permanent magnet is 23, the first electromagnetic block is 24-pressing block, the second electromagnetic block is used for detecting block, and the 29-pressing block is used for detecting the positioning device.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-4, a rock tension-compression shearing seepage coupling rheological experiment device comprises a base 1 and a top seat 2 installed above the base 1, four installation bolts 16 are symmetrically installed on the base 1 in the front and back direction, a transmission seat 32 is installed between the base 1 and the top seat 2, an upper shearing box 8 and a lower shearing box 9 are installed between the transmission seat 32 and the base 1 from top to bottom, grooves are respectively concavely arranged on opposite sides of the upper shearing box 8 and the lower shearing box 9, the two grooves are matched to form a detection cavity, a rock sample 11 is placed in the detection cavity, a vertical loading mechanism is fixedly installed on the top of the top seat 2, the vertical loading mechanism comprises a vertical cylinder 3, the vertical cylinder 3 is fixedly installed on the top of the top seat 2, the output end of the vertical cylinder 3 is fixedly connected with a vertical transmission plate 7, and the vertical transmission plate 7 and the transmission seat 32, and the upper shearing box 8 and the transmission seat 32 are clamped through clamping mechanisms;
two side base plates 4 are symmetrically arranged between the base 1 and the top base 2, a horizontal loading mechanism is arranged on one side base plate 4, the horizontal loading mechanism comprises a horizontal cylinder 12, the horizontal cylinder 12 is fixed on one side base plate 4, a horizontal transmission plate 13 is fixedly connected with the driving end of the horizontal cylinder 12, and the horizontal transmission plate 13 is abutted to the upper shearing box 8;
the clamping mechanism comprises an adjusting motor 17 arranged on one side of two side base plates 4 opposite to each other, a threaded screw rod 19 is arranged on one side of each of the two side base plates 4 opposite to each other, the adjusting motor 17 is used for driving the threaded screw rod 19 to rotate, the threaded screw rod 19 is positioned on two sides of a transmission seat 32, a ball nut 20 is connected to each threaded screw rod 19 in a threaded manner, each ball nut 20 is fixedly provided with a first snap ring 22 and a second snap ring 31 through two connecting rods 21 which are symmetrically arranged, each second snap ring 31 is positioned below the corresponding first snap ring 22, a vertical transmission plate 7 is positioned between the corresponding transmission seat 32 and the two first snap rings 22, the top of the upper shearing box 8 is provided with an outer edge, the outer edge is positioned between the corresponding transmission seat 32 and the two second snap rings 31, the first snap rings 22 and the second snap rings 31 are respectively inserted with inserting columns 28, one end of each inserting column 28 is fixedly provided with a first permanent magnet 26, the top and the bottom of the transmission seat 32 are symmetrically concave with two positioning grooves, a second electromagnetic block 27 matched with the first permanent magnet block 26 is fixedly arranged in each positioning groove;
go up and be fixed with vertical displacement detector 15 on the shearing box 8 and go up the outer edge at shearing box 8 top and go up the symmetry concave and be equipped with two and detect the groove, every detects the inslot and all installs horizontal displacement detector 29, and goes up and cut box 8 and cut box 9 on equal symmetry be provided with the infiltration hole 10 of inside intercommunication down, all fixedly on every side base plate 4 to inlay and be equipped with two press pumps 14.
It should be noted that, the rock sample 11 is adhered to the inner walls of the two detection grooves, the outer edge of the top of the upper shear box 8 is a cylindrical structure, the side base plate 4 is provided with a mounting opening in a penetrating manner, the threaded screw rod 19 is rotatably connected with a bearing, the bearing is slidably inserted in the mounting opening, and the adjusting motor 17 abuts against the side base plate 4, when the bearing slides to the bottom of the mounting opening, the first snap ring 22 and the second snap ring 31 can slide to clamp the transmission seat 32 in the middle, the vertical cylinder 3 provides a vertical upward predetermined pulling force for the upper shear box 8, the horizontal cylinder 12 provides a horizontal predetermined pushing force for the upper shear box 8, when the rock sample 11 is broken, the upper shear box 8 can be separated from the lower shear box 9, so as to complete the tension and compression shear experiment on the rock sample 11, the vertical displacement of the upper shear box 8 is detected by the vertical displacement detector 15, the horizontal displacement detector 29 is used for monitoring the horizontal displacement of the upper shearing box 8, the four mounting bolts 16 are used for facilitating the fastening and mounting of the base 1 on the workbench, and the device has the characteristic of stable mounting, the threaded screw rod 19 is controlled to rotate by the adjusting motor 17, so that the ball nut 20 in threaded connection with the threaded screw rod 19 drives the first clamping ring 22 and the second clamping ring 31 to slide to the upper side and the lower side of the transmission seat 32, the transmission seat 32 is clamped, when the ball nut slides to a preset position, the second electromagnetic block 27 is electrified to generate magnetic attraction to the first permanent magnetic block 26, the inserting column 28 slides to the positioning groove, the first permanent magnetic block 26 and the second electromagnetic block 27 are abutted to complete adsorption and fixation, the stable clamping of the transmission seat 32 is realized, and the device has the characteristics of automatic clamping and convenient assembly and disassembly;
each first snap ring 22 and each second snap ring 31 are of a semi-circular structure, and a whole circular ring structure can be formed by matching between the two first snap rings 22 and between the two second snap rings 31;
it should be noted that, referring to fig. 2 of the specification, the cylindrical structure is matched with the transmission seat 32, and the vertical transmission plate 7 can be in interference fit in the transmission seat 32, so that transmission is realized, and the connection and the transmission have high stability;
wherein, one end of each threaded screw rod 19, which is far away from the side substrate 4, is rotatably connected with a limiting plate 18, and a distance is formed between each two limiting plates 18 and the transmission seat 32 and is between 1cm and 2 cm;
it should be noted that the two limiting plates 18 can limit the moving range of the ball nut 20, and when the ball nut 20 moves to abut against the limiting plates 18, the two first snap rings 22 and the two second snap rings 31 cooperate to clamp the vertical transmission plate 7, the transmission seat 32 and the upper shear box 8, so that the control of a worker is facilitated;
two fixing rods 5 are symmetrically fixed on each side substrate 4, and the two fixing rods 5 are respectively and fixedly connected with the base 1 and the top seat 2 through positioning nuts 6;
it should be noted that the base 1 and the top seat 2 are symmetrically provided with two through holes in a penetrating manner, the fixing rod 5 penetrates through the corresponding through holes, when disassembly is needed, the fixing rod 5 can be separated from the jack on the base 1 only by screwing down the two positioning nuts 6 at the bottom of the base 1 and manually lifting the top seat 2 for a certain height, and then the positioning nuts 6 at the top of the top seat 2 are screwed down, so that the side base plate 4 can be disassembled and assembled, and the disassembly and the assembly are simple and convenient;
wherein, the included angle between each water seepage hole 10 and the horizontal plane is 45 degrees;
it should be noted that the four water seepage holes 10 are symmetrically arranged, water is injected into the water seepage holes 10 through the pressure pump 14, a seepage experiment can be performed on the rock sample 11, and the multidirectional oblique water injection is performed for coupling seepage, which is beneficial to approaching the actual natural condition, so that the accuracy of the experiment result is improved;
the top and the bottom of the transmission seat 32 are both concavely provided with sliding grooves 30, the vertical transmission plate 7 is inserted into the sliding groove 30 at the top of the transmission seat 32 and clamped through two first clamping rings 22, the outer edge of the top of the upper shearing box 8 is inserted into the sliding groove 30 at the bottom of the transmission seat 32 and connected through a second clamping ring 31, and a sliding space is formed between the outer edge of the top of the upper shearing box 8 and the inner wall of the sliding groove 30 at the bottom of the transmission seat 32;
it should be noted that when the two first snap rings 22 slide to the top of the vertical transmission plate 7 to abut against the vertical transmission plate 7, the vertical cylinder 3 provides a pretension force at this time, because the first snap rings 22 cooperate with the second snap rings 31 to provide a pretension force to the transmission base 32 and the upper shear box 8, after the upper shear box 8 is sheared by the rock sample 11 and rises, the adjusting motor 17 rises a certain height along the side base plate 4 and the threaded screw rod 19 slides upwards for a predetermined height along the mounting opening through the bearing, and the outer edge of the top of the upper shear box 8 can slide horizontally in the sliding groove 30 at the bottom of the transmission base 32, so as to achieve horizontal displacement of the upper shear box 8;
second permanent magnets 23 are fixedly mounted at one end, far away from the first permanent magnet 26, of each inserting column 28, and first electromagnetic blocks 24 used for being matched with the second permanent magnets 23 are fixed on each first clamping ring 22 and each second clamping ring 31;
it should be noted that the first electromagnetic block 24 has magnetism that is mutually repulsive to the second permanent magnet block 23 when being powered on, and in this process, the second electromagnetic block 27 loses magnetism when being powered off, so that no magnetic force is generated between the second electromagnetic block 27 and the first permanent magnet block 26, at this time, the magnetic force between the first electromagnetic block 24 and the second permanent magnet block 23 can enable the insert column 28 to slide up to the first permanent magnet block 26 to be separated from the positioning groove, at this time, the two adjusting motors 17 drive the threaded screw rod 19 to rotate, that is, the two ball nuts 20 can slide back to back, and the two connecting rods 21 are matched to enable the two first snap rings 22 and the two second snap rings 31 to slide back to be separated from the abutting state of the transmission seat 32, at this time, the transmission seat 32 can be conveniently taken out from the upper shear box 8, so that the upper shear box 8 and the lower shear box 9 can be separated, and the replacement of the internal rock sample 11 can be completed;
each first snap ring 22 and each second snap ring 31 are internally provided with sliding openings in a penetrating manner, the sliding openings are in a step shape, the inserting columns 28 are fixedly provided with limiting blocks 25, and the limiting blocks 25 are inserted in the sliding openings in a sliding manner;
it should be noted that, referring to fig. 3 in the specification, the limiting block 25 can only slide up and down in the middle of the sliding opening, and cannot slide continuously when sliding to be abutted against the sliding opening wall, so that it is ensured that the plug-in post 28 on the second snap ring 31 cannot slide down due to gravity, and thus stable connection between the plug-in post 28 and the first snap ring 22 as well as the second snap ring 31 is achieved, and guidance in the sliding process of the plug-in post 28 is facilitated, so that the plug-in post can be accurately inserted into the positioning groove, and positioning is completed through the first permanent magnet 26 and the second electromagnetic magnet 27.
In the invention, when a user uses the device, the base 1 is fixedly installed on the workbench through the four installation bolts 16, the threaded screw rod 19 is controlled to rotate through the adjusting motor 17, the ball nut 20 in threaded connection with the threaded screw rod 19 drives the first snap ring 22 and the second snap ring 31 to slide to the upper side and the lower side of the transmission seat 32, so that the transmission seat 32 is clamped, when the transmission seat slides to a preset position, the second electromagnetic block 27 is electrified to generate magnetic attraction to the first permanent magnetic block 26, the inserting column 28 slides to the positioning groove, and the first permanent magnetic block 26 and the second electromagnetic block 27 are abutted to complete adsorption and fixation;
the vertical cylinder 3 provides vertical upward preset tension for the upper shearing box 8, the horizontal cylinder 12 provides horizontal preset thrust for the upper shearing box 8, when the rock sample 11 is broken, the upper shearing box 8 horizontally slides in the sliding groove 30 at the bottom of the transmission seat 32, the tension of the vertical cylinder 3 can enable the upper shearing box 8 to be separated from the lower shearing box 9, the adjusting motor 17 slides upwards for a certain distance along the side base plate 4 at the moment, the threaded lead screw 19 also slides upwards for a preset distance in the mounting hole through a bearing, so that a tension-compression shearing experiment on the rock sample 11 is completed, the vertical displacement of the upper shearing box 8 is detected through the vertical displacement detector 15, and the horizontal displacement of the upper shearing box 8 is monitored through the horizontal displacement detector 29;
water is injected into the seepage holes 10 through the pressure pump 14, a seepage experiment can be carried out on the rock sample 11, the multidirectional oblique water injection is carried out for coupling seepage, the actual natural condition is favorably approached, and therefore the accuracy of an experiment result is improved;
after the experiment is finished, when the rock sample 11 needs to be replaced, the second electromagnetic block 27 is powered off and loses magnetism, so that no magnetic force exists between the second electromagnetic block 27 and the first permanent magnetic block 26, at the moment, the first electromagnetic block 24 is powered on, the magnetic force between the second electromagnetic block 23 and the second permanent magnetic block can enable the plug column 28 to slide upwards to the first permanent magnetic block 26 to be separated from the positioning groove, at the moment, the two adjusting motors 17 drive the threaded screw rod 19 to rotate, so that the two ball nuts 20 can slide back to back, the two first clamping rings 22 and the two second clamping rings 31 are matched with the two connecting rods 21 to enable the two first clamping rings 22 and the two second clamping rings 31 to slide back to be separated from each other to be in a state of being abutted against the transmission seat 32, at the moment, the transmission seat 32 can be conveniently taken out of the upper shearing box 8 and the lower shearing box 9, and the replacement of the internal rock sample 11 is completed;
when needs are dismantled to side base plate 4, only need to screw off two set nut 6 bottom base 1, the jack on base 1 can be separated from dead lever 5 to manual lifting footstock 2 take the altitude to make, screws off 2 top set nut 6 of footstock again, can realize the dismouting of side base plate 4, dismouting simple and convenient.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.

Claims (1)

1. The rock tension-compression shear seepage coupling rheological experiment device comprises a base (1) and a top seat (2) arranged above the base (1), wherein four mounting bolts (16) are symmetrically arranged on the base (1) in a front-back manner, a transmission seat (32) is arranged between the base (1) and the top seat (2), an upper shear box (8) and a lower shear box (9) are arranged between the transmission seat (32) and the base (1) from top to bottom, grooves are respectively formed in opposite sides of the upper shear box (8) and the lower shear box (9) in a concave manner, the two grooves are matched to form a detection cavity, a rock sample (11) is placed in the detection cavity, a vertical loading mechanism is fixedly arranged at the top of the top seat (2), and the rock tension-compression shear seepage coupling rheological experiment device is characterized in that the vertical loading mechanism comprises a vertical cylinder (3), the vertical cylinder (3) is fixedly arranged at the top of the top seat (2), the output end of the vertical cylinder (3) is fixedly connected with a vertical transmission plate (7), and the vertical transmission plate (7) and the transmission seat (32) as well as the upper shearing box (8) and the transmission seat (32) are clamped through clamping mechanisms;
two side base plates (4) are symmetrically arranged between the base (1) and the top seat (2), a horizontal loading mechanism is arranged on one side base plate (4), the horizontal loading mechanism comprises a horizontal cylinder (12), the horizontal cylinder (12) is fixed on one side base plate (4), a horizontal transmission plate (13) is fixedly connected with the driving end of the horizontal cylinder (12), and the horizontal transmission plate (13) is abutted to the upper shearing box (8);
the clamping mechanism comprises adjusting motors (17) arranged on one sides of two side base plates (4) which are opposite to each other, wherein threaded screw rods (19) are arranged on one sides of the two side base plates (4) which are opposite to each other, the adjusting motors (17) are used for driving the threaded screw rods (19) to rotate, the threaded screw rods (19) are arranged on two sides of a transmission seat (32), ball nuts (20) are connected to the threaded screw rods (19) in a threaded mode, each ball nut (20) is fixedly provided with a first clamping ring (22) and a second clamping ring (31) through two connecting rods (21) which are symmetrically arranged, the second clamping ring (31) is arranged below the first clamping ring (22), the vertical transmission plate (7) is arranged between the transmission seat (32) and the two first clamping rings (22), the top of the upper shearing box (8) is provided with an outer edge, the outer edge is arranged between the transmission seat (32) and the two second clamping rings (31), inserting columns (28) are inserted into the first clamping ring (22) and the second clamping ring (31), a first permanent magnet (26) is fixed at one end of each inserting column (28), two positioning grooves are symmetrically and concavely formed in the top and the bottom of the transmission seat (32), and a second electromagnetic block (27) matched with the first permanent magnet (26) is fixedly installed in each positioning groove;
a vertical displacement detector (15) is fixed on the upper shearing box (8), two detection grooves are symmetrically and concavely arranged on the outer edge of the top of the upper shearing box (8), a horizontal displacement detector (29) is installed in each detection groove, water seepage holes (10) communicated with the inside are symmetrically formed in the upper shearing box (8) and the lower shearing box (9), and two pressure pumps (14) are fixedly embedded in each side substrate (4);
each first clamping ring (22) and each second clamping ring (31) are of a semi-circular structure, and a whole circular ring structure can be formed by matching between the two first clamping rings (22) and between the two second clamping rings (31);
one end, far away from the side base plate (4), of each threaded screw rod (19) is rotatably connected with a limiting plate (18), a distance is reserved between each two limiting plates (18) and the transmission seat (32), and the distance is 1cm-2 cm;
two fixing rods (5) are symmetrically fixed on each side substrate (4), and the two fixing rods (5) are respectively and fixedly connected with the base (1) and the top seat (2) through positioning nuts (6);
the included angle between each water seepage hole (10) and the horizontal plane is 45 degrees;
the top and the bottom of the transmission seat (32) are both concavely provided with sliding grooves (30), the vertical transmission plate (7) is inserted into the sliding grooves (30) at the top of the transmission seat (32) and clamped through two first clamping rings (22), the outer edge of the top of the upper shearing box (8) is inserted into the sliding grooves (30) at the bottom of the transmission seat (32) and connected through a second clamping ring (31), and a sliding space is formed between the outer edge of the top of the upper shearing box (8) and the inner wall of the sliding grooves (30) at the bottom of the transmission seat (32);
one end, far away from the first permanent magnet (26), of each inserting column (28) is fixedly provided with a second permanent magnet (23), and a first electromagnetic block (24) matched with the second permanent magnet (23) is fixed on each first clamping ring (22) and each second clamping ring (31);
every first snap ring (22) and every all run through in second snap ring (31) and seted up smooth mouthful, smooth mouthful is the stairstepping, insert post (28) fixed mounting have stopper (25), stopper (25) slide and peg graft in the spout.
CN201910797810.7A 2019-08-27 2019-08-27 Rock tension-compression shear seepage coupling rheological experiment device Active CN110672421B (en)

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CN113358543B (en) * 2021-06-16 2022-11-18 吕德全 BIM-based seepage simulation intelligent detection device and method for hydraulic engineering

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CN103175738A (en) * 2013-02-04 2013-06-26 中国科学院武汉岩土力学研究所 Rock tensile-shearing test system
CN106248557A (en) * 2016-09-28 2016-12-21 中国科学院武汉岩土力学研究所 A kind of rock tension and compression ring cuts seepage flow coupling rheological test instrument
CN106290007A (en) * 2016-09-28 2017-01-04 中国科学院武汉岩土力学研究所 A kind of rock stretching and compression dual shear test device and method
CN108645718A (en) * 2018-03-20 2018-10-12 山东科技大学 A kind of rock multi-function scissor cuts experiment test device
CN110160891A (en) * 2019-06-28 2019-08-23 河北工业大学 A kind of coupled shear-flow test device of accumulation body-rock interface

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CN103175738A (en) * 2013-02-04 2013-06-26 中国科学院武汉岩土力学研究所 Rock tensile-shearing test system
CN106248557A (en) * 2016-09-28 2016-12-21 中国科学院武汉岩土力学研究所 A kind of rock tension and compression ring cuts seepage flow coupling rheological test instrument
CN106290007A (en) * 2016-09-28 2017-01-04 中国科学院武汉岩土力学研究所 A kind of rock stretching and compression dual shear test device and method
CN108645718A (en) * 2018-03-20 2018-10-12 山东科技大学 A kind of rock multi-function scissor cuts experiment test device
CN110160891A (en) * 2019-06-28 2019-08-23 河北工业大学 A kind of coupled shear-flow test device of accumulation body-rock interface

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Address after: 301700 No. 19 Wujing Road, Huangzhuang street, Wuqing District, Tianjin

Patentee after: Cubic Tongda (Tianjin) Experimental Instrument Co.,Ltd.

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Patentee before: LIFANG TONGDA INDUSTRIAL (TIANJIN) CO.,LTD.