CN115791393A - A loading device for rock fracturing simulation - Google Patents
A loading device for rock fracturing simulation Download PDFInfo
- Publication number
- CN115791393A CN115791393A CN202211486599.5A CN202211486599A CN115791393A CN 115791393 A CN115791393 A CN 115791393A CN 202211486599 A CN202211486599 A CN 202211486599A CN 115791393 A CN115791393 A CN 115791393A
- Authority
- CN
- China
- Prior art keywords
- plate
- sliding
- stress
- limiting
- pressurizing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Landscapes
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a loading device for rock fracturing simulation, which comprises an upper cover plate, a lower cover plate and a lateral pressurizing piece, wherein the lateral pressurizing piece is arranged on the upper cover plate; the lateral pressurizing part on the front side comprises a bearing frame, a pressurizing plate and a control part, the bearing frame is a square frame formed by connecting one ends, located on the same side, of two transverse plates through vertical plates, grooves in the left side and the right side of the pressurizing plate are clamped outside the two vertical plates respectively, a sliding groove with two ends communicated with the grooves in the left side and the right side and a limiting hole is arranged in front of the pressurizing plate, the control part is located in the sliding groove, and the control part comprises a sliding plate I, a sliding plate II, a stress plate I and a stress plate II. The invention provides a loading device for rock fracturing simulation, aiming at solving the problems that the test result is inaccurate and a sensor on a lateral pressurizing piece is easy to damage due to friction in the moving process of the lateral pressurizing piece, and the loading device can be used for rock fracturing, simultaneously avoid the influence of friction on the lateral pressurizing piece and protect the sensor.
Description
Technical Field
The invention relates to the technical field of rock fracturing, in particular to a loading device for rock fracturing simulation.
Background
The shale can be used as a source rock and a reservoir rock of natural gas, the reservoir has the characteristics of continuous distribution, low porosity, ultra-low permeability, high brittleness and the like, the natural fracture network is needed when the natural gas is produced by the shale due to the extremely low permeability and porosity of the shale, and the fracturing is to enable the shale to present the natural fracture network so as to create a migration channel of the natural gas. In order to research the geometrical morphology of the fractured rock after being stressed and the change rule of the pressure along with the time in the fracturing process, a fracturing simulation experiment needs to be carried out on the rock. The device commonly used in the fracturing simulation test is a triaxial testing machine, the triaxial testing machine applies triaxial pressure to the rock until the rock is fractured, and the sensor tracks and records the triaxial pressure so as to be convenient for subsequent analysis and obtain the characteristics of the fracturing process, the macroscopic crack deformation characterization and the like of the rock.
In order to accurately perform rock fracture simulation tests, a triaxial testing machine generally uses a naturally-formed core, but the sampled cores are different in diameter, so that the currently-used triaxial testing machine is difficult to adapt to cores with different diameters, in order to improve the application range of the triaxial testing machine, a loading device for rock fracture simulation, which is granted under the publication number of CN 211784823U, is provided, and a device is provided for performing simulated loading tests on cylindrical core samples with different outer diameter sizes, but in the device, a lateral pressurizing piece is arranged between an upper cover plate and a lower cover plate, the lateral pressurizing piece moves along an upper sliding hole and a lower sliding hole, the lateral pressurizing piece generates friction force with the upper cover plate and the lower cover plate in the moving process, the lateral pressurizing piece is influenced by the friction force, and in the radial pressurizing process of the cores, the lateral pressurizing piece can generate a blocking phenomenon and can not keep continuously and stably jacking the rock core, a sensor on the lateral pressurizing piece can cause unstable transmission numerical value due to the blocking of the lateral pressurizing piece, and further causes inaccurate test results, in order to reduce the friction force between the lateral pressurizing piece and the upper cover plate and the lower cover plate, the surface area of an upper boss of the device is smaller than the surface area of the upper end surface of the lateral pressurizing piece, the surface area of a lower boss is smaller than the surface area of the lower end surface of the lateral pressurizing piece, and when the lateral pressurizing piece moves relative to the upper cover plate or the lower cover plate, the sliding friction force between the lateral pressurizing piece and the upper cover plate or the lower cover plate can be reduced, but the friction force between the lateral pressurizing piece and the upper cover plate or the lower cover plate is only reduced but is not completely eliminated, and the problem of influencing the movement of the lateral pressurizing piece still exists; moreover, the sensor fixing piece for fixing the sensor is arranged on the device, but the spring drives the elastic extending plate to deform only after the spring is compressed to a certain degree, and in the process, the end part of the sensor is easily damaged by continuous and large jacking force of the broken rock core under the condition that the end part of the sensor is not protected, so that the protection effect of the device on the sensor is poor.
Disclosure of Invention
The invention provides a loading device for rock fracturing simulation, which aims to solve the problems that a test result is inaccurate and a sensor on a lateral pressurizing piece is easy to damage due to friction in the moving process of the lateral pressurizing piece.
In order to solve the problems, the technical scheme of the invention is as follows:
a loading device for rock fracturing simulation comprises an upper cover plate and a lower cover plate, wherein through grooves which are opposite up and down are arrayed on the upper cover plate and the lower cover plate, and a lateral pressurizing piece is arranged between the two opposite up and down through grooves;
the lateral pressurizing part on the front side comprises a bearing frame, a pressurizing plate and a control part, the bearing frame is a frame formed by connecting one ends, located on the same side, of two transverse plates through vertical plates, limiting holes are oppositely formed in the middle of the two vertical plates, connecting parts located in through grooves in the upper side and the lower side of the bearing frame are arranged at the upper end and the lower end of the bearing frame respectively, an upper cover plate and a lower cover plate are connected with the two connecting parts respectively, grooves in the left side and the right side of the pressurizing plate are clamped outside the two vertical plates respectively, a sliding groove with two ends communicated with the grooves in the left side and the right side and the limiting holes is formed in the pressurizing plate, the control part is located in the sliding groove and comprises a first sliding plate, a second sliding plate, a first stress plate and a second stress plate, a limiting plate with right side facing to the opening is arranged on the first sliding plate, the left end of the first sliding plate is connected with a first limiting plate with the free end inserted into the limiting hole in the vertical plate on the left side of the vertical plate, the second sliding plate is arranged in the U-shaped groove, the opening of the first limiting plate, the U-shaped groove is connected with a limiting plate, and the second limiting plate extends out of the U-shaped groove, and the limiting hole is connected with a limiting plate in front side of the limiting hole.
Furthermore, the connecting piece of carriage upside includes slider and screw rod, the slider is located the logical inslot of carriage upside, and along leading to groove length direction and logical groove sliding contact, and the top surface of slider is connected with the screw rod, and the screw rod top spin is equipped with the nut of spacing upper cover plate top.
Further, the bottom surface of the upper side transverse plate of the bearing frame contacts with the upper end surface of the pressurizing plate between the grooves on the left side and the right side, the top surface of the lower side transverse plate contacts with the lower end surface of the pressurizing plate between the grooves on the left side and the right side, and the rear end of the transverse plate of the front bearing frame is positioned on the front side of the rear side surface of the pressurizing plate.
Further, be equipped with the bar hole one that is located between limiting plate one and the atress board one on the slide one of the downside on the U type groove, be connected with the guide block one that passes bar hole one on the trailing flank of the spout of front side, the front end of guide block one is connected with the baffle one with the preceding sliding contact of slide, is equipped with bar hole two on the slide two, is connected with the guide block two that passes bar hole two on the trailing flank of the spout of front side, the front end of guide block two is connected with the baffle two with the preceding sliding contact of slide two.
Furthermore, the opposite side surfaces of the first stress plate and the second stress plate are vertical surfaces, and one ends, close to each other, of the front end surface of the first stress plate and the front end surface of the second stress plate incline backwards to form two inclined surfaces with the same inclination angle.
Further, when the free end of the first limiting plate on the front side is located in the limiting hole in the vertical plate on the left side, and the free end of the second limiting plate on the front side is located in the limiting hole in the vertical plate on the right side, the first spring is in a semi-compression state, and the front end surface of the first stress plate and the front end surface of the second stress plate are in a bilateral symmetry state along the vertical center line of the pressurizing plate.
Furthermore, friction plates are arranged on the opposite side faces of the first stress plate and the second stress plate, when the free end of the first limiting plate on the front side is located in the limiting hole in the vertical plate on the left side and the free end of the second limiting plate on the front side is located in the limiting hole in the vertical plate on the right side, the opposite side faces of the two friction plates are in contact with each other.
Furthermore, the center of the lower cover plate is provided with a circular platform hole with a large top and a small bottom, a supporting plate is arranged in the circular platform hole, the supporting plate is a circular platform plate with a large top and a small bottom, the bottom surface of the supporting plate is fixedly connected with a top post, the bottom surface of the lower cover plate is connected with a guide cylinder sleeved outside the top post, and the top post is in sliding contact with the guide cylinder.
Furthermore, the pressurizing plates on the upper side and the lower side of the sliding groove are provided with jacks, and mounting pieces for mounting and protecting the sensor are arranged in the jacks.
Further, the front side installed part on the increased pressure board includes box body, solid fixed ring and shell fragment, gu fixed ring is vertical to be fixed at the jack middle part, the box body rear end stretches out the jack and is located increased pressure board rear side, the front end slides and passes solid fixed ring, the outer wall front end cover of box body is established and is fixed with the go-between, be connected with spring two between go-between and the solid fixed ring, the lower extreme all is connected with the shell fragment on solid fixed ring's the trailing flank, the rear end of the opposite flank of two shell fragments is relative state roof pressure at the last lateral wall of box body and lateral wall down.
Through the technical scheme, the invention has the beneficial effects that:
1. in the process that the pressurizing plate on the lateral pressurizing piece is jacked by the second pressure transmission linkage plate on the matched rock fracturing simulation device, the pressurizing plate can be separated from the bearing frame and is not influenced by friction force generated by the upper cover plate and the lower cover plate, the phenomenon of blocking and stopping of the pressurizing plate in the process of pressurizing a rock core is avoided, the numerical value output by the sensor is stable, and the accuracy of a test result is further ensured.
2. According to the lateral pressurizing piece, the first stress plate and the second stress plate on the lateral pressurizing piece are pressed by the second pressure transmission linkage plate, the first stress plate and the second stress plate can clamp the second pressure transmission linkage plate under the action of the first spring, and the friction plates can increase the friction force of the first stress plate, the second stress plate and the second pressure transmission linkage plate, so that the pressurizing plate can stably run along with the second pressure transmission linkage plate, and the problems that the pressurizing plate falls off due to gravity in the process of recovering to the original position along with the second pressure transmission linkage plate and the like are avoided.
3. After the sensor is pressed by the broken rock core, the shrapnel in the jack can block the broken rock core, so that the sensor is protected.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the lateral compression member of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
FIG. 4 is a schematic structural diagram of a bezel of the present invention;
FIG. 5 is a top view of the compression plate of the present invention;
FIG. 6 is a schematic view (enlarged) of the first embodiment of the slide board of the present invention;
FIG. 7 is a schematic view (enlarged) of the second slide plate of the present invention;
FIG. 8 is a cross-sectional top view of the lateral compression member of the present invention;
fig. 9 is a partial enlarged view at B in fig. 8;
FIG. 10 is a cross-sectional view of the lower deck and pallet connection of the present invention;
FIG. 11 is a cross-sectional side view (enlarged) of the mount and jack connection on the front compression plate of the present invention;
FIG. 12 is a schematic view (enlarged) of the construction of the cartridge and attachment ring connection of the present invention;
FIG. 13 is a schematic structural view (enlarged view) of the spring plate of the present invention;
FIG. 14 is a state diagram of the use of the present invention;
fig. 15 is a partially enlarged view at C in fig. 14.
The reference numbers in the drawings are as follows: the device comprises an upper cover plate 1, a through groove 2, a screw rod 3, a nut 4, a sliding block 5, a transverse plate 6, a lower cover plate 7, a sliding plate I8, a sliding groove 9, a pressurizing plate 10, a jack 11, a vertical plate 12, a groove 13, a limiting plate I14, a strip-shaped hole I15, a baffle I16, a guide block I17, a strip-shaped hole II 19, a limiting plate II 21, a guide block II 22, a baffle II 23, a sliding plate II 24, a stressed plate I26, a friction plate 27, a stressed plate II 28, a U-shaped groove 29, a spring I30, a limiting hole 31, a circular table hole 32, a top column 33, a guide cylinder 34, a box body 35, a fixing ring 36, a connecting ring 37, a spring II 38, a spring sheet 39, a supporting plate 40, a core 41 and a second pressure transmission linkage plate 42.
Detailed Description
The invention is further described with reference to the following figures and detailed description:
as shown in fig. 1 to 15, a loading device for rock fracturing simulation comprises an upper cover plate 1 and a lower cover plate 7, wherein the upper cover plate 1 and the lower cover plate 7 are circular plate bodies with equal diameters, through grooves 2 which are opposite up and down are arrayed on the upper cover plate 1 and the lower cover plate 7, the through groove 2 on the upper cover plate 1 is a strip-shaped groove, one end of the strip-shaped groove faces to the center of the upper cover plate 1, the other end of the strip-shaped groove penetrates through the annular surface of the upper cover plate 1, the upper end and the lower end of the through groove 2 on the upper cover plate 1 respectively penetrate through the top surface and the bottom surface of the upper cover plate 1, the through grooves 2 on the upper cover plate 1 and the lower cover plate 7 have the same structure, and the loading device further comprises a lateral pressurizing piece arranged between the two through grooves 2 which are opposite up and down;
the lateral pressurizing piece on the front side comprises a bearing frame, a pressurizing plate 10 and a control piece, the bearing frame is a rectangular frame formed by connecting one end of each of two transverse plates 6 positioned on the same side through a vertical plate 12, the transverse plates 6 and the vertical plates 12 are rectangular plate bodies, the two transverse plates 6 are parallel, the transverse plate 6 on the upper side is in sliding contact with the bottom surface of the upper cover plate 1, the transverse plate 6 on the lower side is in sliding contact with the top surface of the lower cover plate 7, the two vertical plates 12 are parallel, the front end of each vertical plate 12 is flush with the front end of the transverse plate 6, a space is reserved between the rear end and the rear end of the transverse plate 6, the middle parts of the two vertical plates 12 are oppositely provided with limiting holes 31, the limiting holes 31 are elongated holes which are arranged along the height direction of the vertical plates 12 and penetrate through the left and right side surfaces of the vertical plates 12, the middle parts of the upper end and the lower end of the bearing frame are respectively provided with a connecting piece positioned in a through groove 2 on the upper side and the lower side of the bearing frame, the two connecting pieces are respectively connected with the upper cover plate 1 and the lower cover plate 7, the pressure plate 10 is a rectangular plate body, the rear side surface of the pressure plate is an arc-shaped surface, grooves 13 on the left side and the right side of the front surface of the pressure plate 10 are respectively clamped on the outer sides of two vertical plates 12, the grooves 13 are strip-shaped grooves with forward openings and upper and lower ends penetrating through the upper and lower end surfaces of the pressure plate 10, a sliding groove 9 with two ends communicated with the grooves 13 on the left side and the right side and a limiting hole 31 is arranged in the middle of the front surface of the pressure plate 10, the sliding groove 9 is a strip-shaped groove with a forward opening, the control part is positioned in the sliding groove 9 and comprises a sliding plate I8, a sliding plate II 24, a stress plate I26 and a stress plate II 28, the sliding plate I8 is a plate body with a U-shaped groove 29 extending towards the left side and close to the left end of the sliding plate I8, the opening part of the U-shaped groove 29 faces the right, the front and rear ends of the U-shaped groove 29 penetrate through the front and rear surfaces of the sliding plate I8, the sliding plate I8 is arranged in the sliding groove 9, the left end is connected with a limiting plate 14 with a free end inserted into the limiting hole 31 of the vertical plate 12 on the left side, the upper end surface and the lower end surface of the first sliding plate 8 are in sliding contact with the upper side surface and the lower side surface of the sliding chute 9, and the rear surface of the sliding plate is in sliding contact with the rear surface of the sliding chute 9; a second sliding plate 24 is arranged in the U-shaped groove 29 in a sliding mode, the second sliding plate 24 is a rectangular plate body with the upper end face and the lower end face in sliding contact with the upper side face and the lower side face of the U-shaped groove 29 and the back face in sliding contact with the back face of the sliding groove 9, a first spring 30 is connected between the left end of the second sliding plate 24 and the left side face of the U-shaped groove 29, the right end of the second sliding plate extends out of the U-shaped groove 29 and is connected with a second limiting plate 21, the free end of the second limiting plate 21 penetrates into a limiting hole 31 of the right vertical plate 12, the first limiting plate 14 and the second limiting plate 21 are rectangular plate bodies with the same height, a first stress plate 26 with the forward end portion is connected in front of the first sliding plate 8, a second stress plate 28 with the forward end portion is connected in front of the second sliding plate 24 on the left side of the first stress plate 26, the left side face of the second stress plate 28 is flush with the left end face of the second sliding plate 24, and the first stress plate 26 is as the second stress plate 28;
the connecting piece of bearer frame upside includes slider 5 and screw rod 3, slider 5 is located the logical groove 2 of bearer frame upside, and just along leading to 2 length direction of groove and leading to 2 sliding contact, slider 5's top surface and upper cover plate 1's top surface parallel and level, and slider 5's top surface is connected with screw rod 3, and 3 top spins of screw rod are equipped with spacing nut 4 in upper cover plate 1 top, and the structure of the connecting piece of bearer frame upside and downside is the same.
The bottom surface of the upper side transverse plate 6 of the bearing frame contacts with the upper end surface of the pressurizing plate 10 between the grooves 13 on the left side and the right side, the top surface of the lower side transverse plate 6 contacts with the lower end surface of the pressurizing plate 10 between the grooves 13 on the left side and the right side, and the rear end of the transverse plate 6 of the bearing frame on the front side is positioned on the front side of the rear side surface of the pressurizing plate 10.
Be equipped with the first 15 in bar hole that is located between the first 14 and the atress board of limiting plate on the slide 8 of the downside on U type groove 29, bar hole 15 runs through around slide 8 side, and sets up along 8 length direction of slide, is connected with the guide block 17 that passes bar hole 15 on the trailing flank of the spout 9 of front side, guide block 17 is the rectangle massive body, and the front end of guide block 17 is connected with the baffle 16 with the preceding sliding contact of slide 8, is equipped with bar hole two 19 on the slide two 24, bar hole two 19 runs through slide two 24 front and back sides, and sets up along slide two 24 length direction, is connected with guide block two 22 that passes bar hole two 19 on the trailing flank of the spout 9 of front side, guide block two is the rectangle massive body, and the front end of guide block two 22 is connected with slide two 24 preceding sliding contact's baffle two 23.
The opposite side surfaces of the first stress plate 26 and the second stress plate 28 are vertical surfaces, and one end, close to the front end surface of the first stress plate 26 and the front end surface of the second stress plate 28, of the first stress plate inclines backwards to form two inclined surfaces with the same inclination angle.
When the free end of the first limiting plate 14 on the front side is located in the limiting hole 31 of the left vertical plate 12, and the free end of the second limiting plate 21 on the front side is located in the limiting hole 31 of the right vertical plate 12, the first spring 30 is in a semi-compressed state, and the front end surface of the first stress plate 26 and the front end surface of the second stress plate 28 are in a bilateral symmetry state along the vertical center line of the compression plate 10.
The friction plates 27 are arranged on the opposite side faces of the first stress plate 26 and the second stress plate 28, when the free end of the first limiting plate 14 on the front side is located in the limiting hole 31 of the left vertical plate 12 and the free end of the second limiting plate 21 on the front side is located in the limiting hole 31 of the right vertical plate 12, the opposite side faces of the two friction plates 27 are in contact, and a distance is reserved between the right end of the first sliding plate 8 on the front side and the right end of the second sliding plate 24.
The first limiting plate 14 is detachably connected with the first sliding plate 8, and the second limiting plate 21 is detachably connected with the second sliding plate 24.
The center of the lower cover plate is provided with a circular table hole 32 with a large top and a small bottom, a supporting plate 40 is arranged in the circular table hole 32, the supporting plate 40 is a circular table plate with a large top and a small bottom, the supporting plate 40 corresponds to the circular table hole 32 in size and shape, the center of the bottom surface of the supporting plate 40 is fixedly connected with a top column 33, the top column 33 is a cylinder, the bottom surface of the lower cover plate is connected with a guide cylinder 34 sleeved outside the top column 33, the guide cylinder 34 is a cylinder with two open ends, and the top column 33 is in sliding contact with the guide cylinder 34.
Be equipped with jack 11 on the increased pressure board of the downside on the spout 9, the jack is the quad slit that runs through the increased pressure board front and back side, is equipped with the installed part that is used for installing and protects the sensor in the jack 11.
Front side installed part on the increased pressure board includes box body 35, solid fixed ring 36 and shell fragment 39, and box body 35 is front and back end open-ended cavity cuboid, and solid fixed ring 36 is square annular, and solid fixed ring 36 is vertical to be fixed at 11 middle parts of jack, and box body 35 rear end stretches out the jack and is located the increased pressure board rear side, and the front end slides and passes solid fixed ring 36, and the outer wall front end cover of box body 35 is established and is fixed with go-between 37, is connected with spring two 38 between go-between 37 and the solid fixed ring 36, and the lower extreme all is connected with shell fragment 39 on solid fixed ring 36's the trailing flank, shell fragment 39 is for having elastic, the rectangular plate body that spring steel material made, the inner wall sliding contact about the side of shell fragment 39 and jack, and the rear end of the opposite flank of two shell fragments 39 is the relative state roof pressure and presses at the last lateral wall and the lower lateral wall of box body 35, and when two shell fragments 39 do not receive the roof pressure of box body 35, two shell fragment 39 opposite flanks rear portions contact.
The structure of each lateral pressurizing piece positioned between the two opposite through grooves 2 is the same.
The pressurizing plate 10, the upper cover plate 1 and the lower cover plate 7 are all made of Q420 steel.
When the device is used, the device is matched with the prior art of a rock fracturing simulation device with the publication number of CN 109001040A, and the device comprises a main body frame, an axial pressurizing mechanism, a radial pressurizing mechanism and an annular confining pressure mechanism, wherein the main body frame is provided with a rock sample chamber, the main body frame is provided with the radial pressurizing mechanism for applying radial pressure to a rock core to be tested, the radial pressurizing mechanism comprises a wedge mechanism, the wedge mechanism comprises a first pressure transmission linkage plate fixedly connected with a radial hydraulic jack and a second pressure transmission linkage plate arranged on the periphery of the rock sample chamber, the second pressure transmission linkage plate is in sliding fit with the first pressure transmission linkage plate, the second pressure transmission linkage plate is positioned above the first pressure transmission linkage plate, the fitting surface is an inclined surface, the radial hydraulic jack is matched with the inclined surface of the second pressure transmission linkage plate through the first pressure transmission linkage plate, and the second pressure transmission linkage plate can realize horizontal movement towards the central axis of the rock sample chamber under the driving of the first pressure transmission linkage plate.
Before the rock fracturing simulation device is used, a nut 4 is unscrewed, an upper cover plate 1 is taken down, a rock core 41 to be tested is placed on the top surface of a supporting plate 40 among a plurality of lateral pressurizing pieces, the upper cover plate 1 is covered, the nut 4 is screwed up, the lateral pressurizing pieces move along the length direction of a through groove 2 on the upper side and the lower side, a bearing frame drives a pressurizing plate 10 to move along with the bearing frame, the arc-shaped surface of the pressurizing plate 10 on each lateral pressurizing piece is contacted with the rock core 41, the nut 4 on a connecting piece is locked, the rock fracturing simulation device is placed in a rock sample chamber, a second pressure transmission linkage plate 42 of the rock fracturing simulation device moves towards the middle part of the pressurizing plate 10 of the corresponding lateral pressurizing piece, in the process that the second pressure transmission linkage plate 42 moves towards the pressurizing plate 10, the front end surfaces of a first stress plate 26 and a second stress plate 28 are firstly pressed, and because the front end surfaces of the first stress plate 26 and the second stress plate 28 are inclined surfaces, after the first stress plate 26 and the second stress plate 28 are pressed by the second pressure transmission linkage plate 42, the first sliding plate 8 and the second sliding plate 24 are respectively driven to move towards opposite directions, when two sides of the second pressure transmission linkage plate 42 are in contact with friction plates 27 on the first stress plate 26 and the second stress plate 28 and the second pressure transmission linkage plate 42 presses against the second sliding plate 24, the first stress plate 26 and the second stress plate 28 clamp the second pressure transmission linkage plate 42, the free end of the first limiting plate 14 connected with the first sliding plate 8 is separated from the limiting hole 31, the first limiting plate 14 releases the limiting on the same-side vertical plate 12, the free end of the second limiting plate 21 connected with the second sliding plate 24 is separated from the limiting hole 31, the second limiting plate 21 releases the limiting on the same-side vertical plate 12, the second pressure transmission linkage plate 42 continues to move along with the second pressure transmission linkage plate 42, the second pressure transmission linkage plate 42 continues to press the pressure plate 10 through the second sliding plate 24 until the pressure plate 10 is separated from the bearing frame, and the pressure plate 10 is separated from the bearing frame, the influence of the friction force generated by the upper cover plate 1 and the lower cover plate 7 is avoided, the phenomenon of blocking and stopping of the pressurizing plate in the process of pressurizing the core 41 is avoided, the core 41 is continuously jacked by the pressurizing plate, the numerical value output by the sensor is stable, the accuracy of the test result is further ensured, the jacking column 33 on the supporting plate 40 is jacked by the axial pressurizing mechanism, and the supporting plate 40 can axially pressurize the core 41; after the core 41 is pushed by the pressurizing plate, the second pressure transmission linkage plate 42 is clamped by the first stress plate 26 and the second stress plate, the second pressure transmission linkage plate 42 can stably drive the pressurizing plate 10 to recover to the original position, the groove 13 in the pressurizing plate 10 is clamped outside the corresponding vertical plate 12 again, the pressurizing plate 10 does not move any more, the second pressure transmission linkage plate 42 continues to move, after the second pressure transmission linkage plate is not clamped by the first stress plate 26 and the second stress plate 28, the sliding plate I8 and the sliding plate II 24 recover to the original position under the action of the spring I30, the free end of the limiting plate I14 enters the corresponding limiting hole 31, the free end of the limiting plate II 21 enters the corresponding limiting hole 31, and the pressurizing plate 10 is connected with the bearing frame;
according to the invention, the depth of the free end of the first limiting plate 14 penetrating into the corresponding limiting hole 31 is less than one half of the thickness of the second pressure transmission linkage plate 42, the depth of the second limiting plate 21 penetrating into the corresponding limiting hole 31 is less than one half of the thickness of the second pressure transmission linkage plate 42, so that after the second pressure transmission linkage plate 42 is contacted with the first stress plate 26 and the opposite side faces of friction plates on the second stress plate 28, the first stress plate 26 drives the first sliding plate 8 to move to a limit state, the second stress plate 28 drives the second sliding plate 24 to move to the limit state, and the first limiting plate 14 and the second limiting plate 21 can be separated from the corresponding limiting hole 31;
according to the invention, the sensor is arranged in the box body 35 in the jack 11, the input end of the sensor in the box body 35 on the front side pressure plate 10 extends out of the opening at the rear end of the box body 35, the sensor can continuously press the rock core 41 under the action of the second spring 38, when the broken rock core 41 presses the sensor, the box body drives the sensor to move forwards, when the box body 35 drives the sensor to move forwards until the sensor does not press the elastic sheets 39 on the upper side and the lower side of the box body, the rear parts of the elastic sheets 39 are close to each other under the action of restoring force, the broken rock core 41 on the rear side of the sensor can be blocked by the elastic sheets 39, the sensor is not pressed against the sensor any more, and the sensor is prevented from being damaged due to pressing of the broken rock core 41.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various equivalent or equivalent modifications or substitutions may be made within the scope of the present invention without departing from the spirit or scope of the invention.
Claims (10)
1. A loading device for rock fracturing simulation comprises an upper cover plate (1) and a lower cover plate (7), wherein through grooves (2) which are opposite up and down are arrayed on the upper cover plate (1) and the lower cover plate (7), and the loading device is characterized by further comprising a lateral pressurizing piece arranged between the two through grooves (2) which are opposite up and down;
the lateral pressurizing part at the front side comprises a bearing frame, a pressurizing plate (10) and a control part, the bearing frame is a frame formed by connecting one ends of two transverse plates (6) which are positioned at the same side through vertical plates (12), limiting holes (31) are oppositely arranged in the middles of the two vertical plates (12), connecting parts positioned in through grooves (2) on the upper side and the lower side of the bearing frame are arranged at the upper end and the lower end of the bearing frame respectively, the two connecting parts are connected with an upper cover plate (1) and a lower cover plate (7), grooves (13) on the left side and the right side in front of the pressurizing plate (10) are clamped outside the two vertical plates (12) respectively, a sliding groove (9) with two ends communicated with the grooves (13) on the left side and the right side and the limiting holes (31) is arranged in front of the pressurizing plate (10), the control part is positioned in the sliding groove (9), the control part comprises a first sliding plate (8), a second sliding plate (24), a first stress plate (26) and a second stress plate (28), a U-shaped groove (29) with two ends facing right is arranged on the opening part on the first sliding plate (8), the sliding plate (9), the sliding plate (24) is connected with a first limiting groove (29), a second groove (14) with a sliding spring (29) with a second limiting plate (21) with a left side, and a second groove (29) extending out side spring (29) which is connected between the sliding plate (21), the free end of the second limiting plate (21) penetrates into a limiting hole (31) of the right vertical plate (12), a first stress plate (26) is connected in front of the first sliding plate (8), and a second stress plate (28) is connected in front of the second sliding plate (24) on the left side of the first stress plate (26).
2. The loading device for rock fracturing simulation of claim 1, wherein the connecting piece on the upper side of the bearing frame comprises a sliding block (5) and a screw rod (3), the sliding block (5) is positioned in the through groove (2) on the upper side of the bearing frame and is in sliding contact with the through groove (2) along the length direction of the through groove (2), the screw rod (3) is connected to the top surface of the sliding block (5), and a nut (4) limited above the upper cover plate (1) is screwed on the screw rod (3).
3. The loading device for rock fracture simulation according to claim 1, wherein the bottom surface of the upper cross plate (6) of the bearing frame contacts the upper end surface of the pressure plate (10) between the grooves (13) on the left and right sides, the top surface of the lower cross plate (6) contacts the lower end surface of the pressure plate (10) between the grooves (13) on the left and right sides, and the rear end of the cross plate (6) of the bearing frame on the front side is located on the front side of the rear side of the pressure plate (10).
4. The loading device for rock fracturing simulation according to claim 1, wherein a first strip-shaped hole (15) between the first limiting plate (14) and the first stress plate (26) is formed in the first sliding plate (8) on the upper side and the lower side of the U-shaped groove (29), a first guide block (17) penetrating through the first strip-shaped hole (15) is connected to the rear side face of the sliding groove (9) on the front side, a first baffle plate (16) in sliding contact with the front face of the first sliding plate (8) is connected to the front end of the first guide block (17), a second strip-shaped hole (19) is formed in the second sliding plate (24), a second guide block (22) penetrating through the second strip-shaped hole (19) is connected to the rear side face of the sliding groove (9) on the front side, and a second baffle plate (23) in sliding contact with the front face of the second sliding plate (24) is connected to the front end of the second guide block (22).
5. The loading device for rock fracture simulation of claim 1, wherein the opposite side surfaces of the first stress plate (26) and the second stress plate (28) are vertical surfaces, and the end, close to the front end surface of the first stress plate (26) and the front end surface of the second stress plate (28), of the first stress plate and the end, close to the front end surface of the second stress plate, of the first stress plate incline backwards to form two inclined surfaces with the same inclination angle.
6. The loading device for rock fracture simulation of claim 5, wherein when the free end of the first front limiting plate (14) is located in the limiting hole (31) of the left vertical plate (12), and the free end of the second front limiting plate (21) is located in the limiting hole (31) of the right vertical plate (12), the first spring (30) is in a semi-compression state, and the front end surface of the first stress plate (26) and the front end surface of the second stress plate (28) are in a left-right symmetry state along the vertical center line of the pressure plate (10).
7. A loading device for rock fracture simulation according to claim 6, wherein the friction plates (27) are arranged on the opposite sides of the first stress plate (26) and the second stress plate (28), the free end of the first front limiting plate (14) is positioned in the limiting hole (31) of the left vertical plate (12), and when the free end of the second front limiting plate (21) is positioned in the limiting hole (31) of the right vertical plate (12), the opposite sides of the two friction plates (27) are in contact.
8. The loading device for rock fracturing simulation of claim 1, wherein the center of the lower cover plate is provided with a circular table hole (32) with a large top and a small bottom, a supporting plate (40) is arranged in the circular table hole (32), the supporting plate (40) is a circular table plate with a large top and a small bottom, the bottom surface of the supporting plate (40) is fixedly connected with a top column (33), the bottom surface of the lower cover plate is connected with a guide cylinder (34) sleeved outside the top column (33), and the top column (33) is in sliding contact with the guide cylinder (34).
9. The loading device for rock fracture simulation according to claim 1, wherein the pressure plate on the upper side and the lower side of the sliding chute (9) is provided with a jack (11), and a mounting piece for mounting and protecting the sensor is arranged in the jack (11).
10. The loading device for rock fracturing simulation of claim 9, wherein the mounting piece on the pressure plate on the front side comprises a box body (35), a fixing ring (36) and elastic pieces (39), the fixing ring (36) is vertically fixed in the middle of the jack (11), the rear end of the box body (35) extends out of the jack and is located on the rear side of the pressure plate, the front end of the box body slides through the fixing ring (36), a connecting ring (37) is fixedly sleeved at the front end of the outer wall of the box body (35), a second spring (38) is connected between the connecting ring (37) and the fixing ring (36), the elastic pieces (39) are connected to the upper end and the lower end of the rear side face of the fixing ring (36), and the rear ends of the opposite side faces of the two elastic pieces (39) are in a relative state and abut against the upper side wall and the lower side wall of the box body (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211486599.5A CN115791393B (en) | 2022-11-25 | 2022-11-25 | Loading device for rock fracturing simulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211486599.5A CN115791393B (en) | 2022-11-25 | 2022-11-25 | Loading device for rock fracturing simulation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115791393A true CN115791393A (en) | 2023-03-14 |
| CN115791393B CN115791393B (en) | 2023-08-15 |
Family
ID=85441319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211486599.5A Active CN115791393B (en) | 2022-11-25 | 2022-11-25 | Loading device for rock fracturing simulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115791393B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117740555A (en) * | 2024-02-21 | 2024-03-22 | 中国地质调查局成都地质调查中心（西南地质科技创新中心） | Simulation test device for falling mechanism of dangerous rock under rainfall induction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4825700A (en) * | 1988-06-15 | 1989-05-02 | Regents Of The University Of Minnesota | Bi-axial geomaterial test system |
| JP2012008149A (en) * | 2011-10-07 | 2012-01-12 | Shimadzu Corp | Material testing device |
| CN109001040A (en) * | 2018-07-05 | 2018-12-14 | 中国地质大学（北京） | Rock fracture simulator |
| CN211784823U (en) * | 2019-12-31 | 2020-10-27 | 中国地质大学（北京） | Loading device for rock fracturing simulation |
| CN114279813A (en) * | 2021-12-24 | 2022-04-05 | 广西大学 | Rock structural surface separation rolling-sliding type shear box under true triaxial disturbance and use method |
| CN114878324A (en) * | 2022-04-22 | 2022-08-09 | 绍兴文理学院 | Rock triaxial and direct shear portable testing device and testing method thereof |
-
2022
- 2022-11-25 CN CN202211486599.5A patent/CN115791393B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4825700A (en) * | 1988-06-15 | 1989-05-02 | Regents Of The University Of Minnesota | Bi-axial geomaterial test system |
| JP2012008149A (en) * | 2011-10-07 | 2012-01-12 | Shimadzu Corp | Material testing device |
| CN109001040A (en) * | 2018-07-05 | 2018-12-14 | 中国地质大学（北京） | Rock fracture simulator |
| CN211784823U (en) * | 2019-12-31 | 2020-10-27 | 中国地质大学（北京） | Loading device for rock fracturing simulation |
| CN114279813A (en) * | 2021-12-24 | 2022-04-05 | 广西大学 | Rock structural surface separation rolling-sliding type shear box under true triaxial disturbance and use method |
| CN114878324A (en) * | 2022-04-22 | 2022-08-09 | 绍兴文理学院 | Rock triaxial and direct shear portable testing device and testing method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117740555A (en) * | 2024-02-21 | 2024-03-22 | 中国地质调查局成都地质调查中心（西南地质科技创新中心） | Simulation test device for falling mechanism of dangerous rock under rainfall induction |
| CN117740555B (en) * | 2024-02-21 | 2024-04-30 | 中国地质调查局成都地质调查中心（西南地质科技创新中心） | Simulation test device for falling mechanism of dangerous rock under rainfall induction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115791393B (en) | 2023-08-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103645096B (en) | Variable-sized true triaxial test machine | |
| CN115791393A (en) | A loading device for rock fracturing simulation | |
| CN107727489A (en) | A kind of clamping and fixing device of sheet metal compression | |
| CN105527157A (en) | Rapid-assembling and dissembling split clamp used for fatigue test | |
| CN111929181B (en) | Impact rock crushing mechanism test device | |
| CN112284888B (en) | Sample clamp for Brazilian splitting and using method | |
| CN210626201U (en) | Assembly for carrying out a compression creep test on a tensile machine | |
| CN113109138A (en) | Metal material compression test is with supplementary device of clamping of two direction restriction types | |
| CN107870124A (en) | Fixture for the experiment of composite board compression performance | |
| CN210269387U (en) | Cement breaking press | |
| CN111487145B (en) | Device and method for describing damage of explosive impact on concrete-surrounding rock interface | |
| CN105699184A (en) | Bending test clamp for MTS pressure tester | |
| CN209182176U (en) | A kind of protective device and impact device of impact device load transducer | |
| CN207935234U (en) | One kind is for Hopkinson pressure bar and strain gauge adhesion positioning device | |
| CN215296949U (en) | Concrete splitting tensile strength experimental device | |
| CN218995015U (en) | Urban road pavement structure intensity detection equipment | |
| CN219608591U (en) | Material test fixture of valve foundry goods | |
| CN220507913U (en) | Hole detection tool | |
| SU1099231A1 (en) | Device for mountain rock shear-testing | |
| CN220289292U (en) | Hardness testing tool | |
| CN217400855U (en) | Hydraulic rock core splitting machine convenient for sampling | |
| CN219121870U (en) | Camshaft hardness detector | |
| CN218822903U (en) | Pressure testing device | |
| CN215930721U (en) | RW skylight inserts are synthesized and are examined utensil for car | |
| CN221405344U (en) | Sucker rod centralizer cohesion testing arrangement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20230721 Address after: No. 16 Jinshui East Road, Zhengzhou City, Henan Province, 450000 Applicant after: Henan Geological Research Institute Address before: 450001 No. 81, Science Avenue, High-tech Industrial Development Zone, Zhengzhou City, Henan Province Applicant before: HENAN INSTITUTE OF GEOLOGICAL SURVEY |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |