A thrust fault structure simulation test system

Abstract

The present application relates to the field of geological science, and particularly relates to a thrust fault structure simulation test system, which comprises a simulation box formed by two relatively slidable box bodies, the box body comprises a box bottom plate and oppositely arranged box side plates, the box side plates and the box bottom plate form a box frame; a baffle is arranged on the inner side surface of the box side plate, and the upper surface of the box bottom plate is provided with a stacking area; a stacking plate is placed on the stacking area, and the stacking plate comprises a plurality of mutually stacked push blocks; the system further comprises a force applying part for applying extrusion force to the box frame so that the two box bodies are close to each other; a driving part for relatively moving the two box bodies in the vertical direction; and an auxiliary part for applying an external force to each push block in the stacking plate periodically towards the inside of the simulation box. Through the device, the vibration change of the simulated stratum in the process of forming the thrust fault is closer to the damage condition of the real stratum in the process of forming the thrust fault, so that the result of the simulation test is more accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of geological science, and particularly relates to a thrust fault structure simulation test system. BACKGROUND

[0002] The thrust fault is a type of reverse fault, usually appearing in the contact zone between two geological plates, generally formed due to the extrusion between the crustal plates, the formation of the thrust fault can cause the uplift or subsidence of the ground surface, change the topography and geomorphology, and possibly trigger seismic activity. The plate on the ground surface is the upper plate, and the plate on the ground surface is the lower plate.

[0003] In order to better study the formation process of the thrust fault, in the patent with the application number CN201910789508.7 and the patent name of a device for simulating thrust fault rupture, it comprises a loading device, a supporting device, a testing device, an auxiliary device and a fault model device; the fault rupture causes the pulse research to be carried out by the physical model experiment, the characteristics and spatial distribution of the pulse seismic motion generated by different fault types and different fault parameters are revealed, and the pulse seismic motion characteristic model based on the fault type is established. The applicant finds that, in the formation process of the reverse fault, no matter the upper plate or the lower plate, the extrusion force at different depths is different, and the extrusion force of the stratum at the same depth also changes in different time periods. The change of the extrusion force has a great influence on the damage strength of the earthquake, and in the prior art, the change is not considered when the thrust fault is simulated, so that the final test result is adversely affected. SUMMARY

[0004] Therefore, the purpose of the present application is to provide a thrust fault structure simulation test system to solve the technical problem that the final test result is deviated in the prior art when the formation of the thrust fault is simulated because the change of the extrusion force is not considered.

[0005] In order to achieve the above purpose, the present application provides a thrust fault structure simulation test system, which comprises a hollow open box-shaped simulation box surrounded by two box bodies that can slide relative to each other, and the contact surfaces of the two box bodies are inclined, and the box body comprises:

[0006] a box bottom plate and an oppositely arranged box side plate, the box side plate is fixed to the upper surface of the box bottom plate, and the box side plate and the box bottom plate form a box frame;

[0007] a baffle arranged on the inner side of the box side plate, the upper surface of the box bottom plate is provided with a stacking area, and the baffle is located outside the stacking area;

[0008] a stacking plate placed on the stacking area, the stacking plate comprises a plurality of mutually stacked push blocks;

[0009] The system further comprises:

[0010] A force applying part for applying extrusion force to the box frame to make the two boxes close to each other;

[0011] A driving part for making the two boxes move relatively in the vertical direction;

[0012] An auxiliary part for applying periodic external force to each push block in the stacking plate towards the inside of the simulation box, and the external force applied by the auxiliary part to the push block gradually increases from top to bottom when the auxiliary part applies external force to the push block.

[0013] Further, the driving part comprises:

[0014] A support plate corresponding to the box and a bottom sliding plate arranged at the bottom of the box bottom plate, the upper surface of the support plate is provided with a bottom sliding groove, and the bottom sliding plate is in sliding connection with the bottom sliding groove;

[0015] A first telescopic cylinder with at least one output shaft fixedly connected with the support plate;

[0016] A fixed platform fixedly connected with the bottom of the first telescopic cylinder.

[0017] Further, the force applying part comprises at least one second telescopic cylinder, the cylinder body of the second telescopic cylinder is fixed to the support plate, and the output shaft of the second telescopic cylinder is fixed to the box frame.

[0018] Further, the auxiliary part comprises:

[0019] A bearing block and an extension rod fixed at one end to the outer side surface of the push block, the bearing block is provided with a through hole, and the extension rod is in sliding connection with the through hole;

[0020] A first spring sleeved on the extension rod, one end of the first spring is fixed to one side of the bearing block, and the other end of the first spring is fixed to the outer side surface of the push block;

[0021] A first screw rod and a splicing block provided with a first screw hole, the first screw rod is in threaded connection with the corresponding first screw hole, one side of the bearing block is provided with a rotating cavity, and the bottom end of the first screw rod is provided with a rotating end, and the rotating end is in rotating connection with the rotating cavity;

[0022] An extension plate arranged at the outer side of the box bottom plate, the upper surface of the extension plate is provided with a surface sliding groove;

[0023] A vertical plate in sliding connection with the surface sliding groove at the bottom end, and the side surface of the vertical plate is provided with a side sliding groove;

[0024] An external force assembly for periodically applying external force to the vertical plate;

[0025] The side sliding block is arranged on one side of the splicing block and is matched with the side sliding groove. When the side sliding block enters the side sliding groove, the side sliding block is in sliding connection with the side sliding groove.

[0026] When a plurality of pushing blocks are stacked on the stacking area, corresponding splicing blocks are stacked on each other from top to bottom to form an integral splicing plate. Some or all of the side sliding blocks in the splicing plate enter the side sliding groove, and the splicing plate is provided with a locking assembly for locking adjacent splicing blocks.

[0027] Further, the front end of the extension rod is provided with a limiting block. When the abutting block is in contact with the limiting block, the first spring is in a natural state.

[0028] Further, the locking assembly comprises:

[0029] The insertion block is arranged at the bottom of the splicing block. The top of the splicing block is provided with an insertion slot. The side wall of the insertion slot is provided with a side wall hole. The other side wall of the insertion slot is provided with a side through hole penetrating the outer side surface of the splicing block. The side wall hole is opposite to the side through hole. When the splicing blocks are stacked on each other, the insertion block enters the insertion slot.

[0030] The push rod is in threaded connection with the side through hole. The insertion block is provided with a connecting hole penetrating the two side surfaces thereof. When the insertion block enters the insertion slot, a part of the push rod is used to enter the connecting hole.

[0031] The positioning rod and the end block arranged at the bottom of the positioning rod are provided. The inside of the insertion block is provided with an inner cavity. The positioning rod is in sliding connection with the connecting hole. The end block is in sliding connection with the inner cavity. A part of the positioning rod is used to enter the side wall hole.

[0032] The first electromagnet arranged in the end block and the second electromagnet arranged in the inner cavity are used to generate an attractive force after being powered.

[0033] Further, the external force assembly comprises:

[0034] The motor and the rotating disc arranged on the output shaft of the motor are arranged on the extension plate.

[0035] The hinged rod is hinged at one end of the extension plate. The other end of the hinged rod is provided with a first rotating hole.

[0036] The swing rod and the first rotating shaft arranged on the swing rod are in rotating connection with the first rotating hole.

[0037] The second rotating shaft and the adjusting block arranged on the rotating disc are in rotating connection with the second rotating hole. The second rotating shaft is fixed to one end of the swing rod. The side surface of the adjusting block is provided with a second rotating hole.

[0038] An auxiliary sliding block hinged to the other end of the swing lever, which is in sliding connection with an auxiliary sliding groove arranged on the side surface of the vertical plate.

[0039] Further, the end surface of the rotating disc is provided with a through slot, the adjusting block is in sliding connection with the through slot, and the system further comprises:

[0040] A second screw rod, the adjusting block is provided with a second screw hole, the second screw rod is in threaded connection with the second screw hole, one end of the second screw rod is in rotational connection with the top wall of the through slot, and the other end of the second screw rod passes through a side hole arranged on the side surface of the rotating disc;

[0041] A driving assembly for driving the second screw rod to rotate.

[0042] Further, the driving assembly comprises:

[0043] A circular ring plate sleeved on the outside of the rotating disc, the inner side surface of the circular ring plate is provided with a side ring cavity, and the upper and lower inner walls of the side ring cavity are both provided with ring racks;

[0044] A main gear arranged on the second screw rod, which is matched with the ring rack;

[0045] A third telescopic cylinder arranged on the extension plate and a connecting frame arranged on the output shaft of the third telescopic cylinder, the connecting frame is fixedly connected with the circular ring plate.

[0046] Further, a plurality of plate assemblies are arranged above the stacking area, the plate assembly comprises opposite inner sliding plates, the inner sliding plates are fixed to the inner side surfaces of the corresponding box side plates, and the two ends of the push block are provided with outer sliding grooves corresponding to the inner sliding plates.

[0047] The beneficial effects of the present application: adopt the thrust fault structure simulation test system of the application, before the simulation test is carried out, the position of the box is adjusted, so that two boxes are arranged oppositely, then according to the thickness of the simulated stratum, the corresponding number of push blocks are stacked in the local area in turn, after completion, the simulated stratum is put into the simulation box, here the vibration sensor can be put into the different depth of the simulated stratum to collect the vibration data during the simulation experiment, during the simulation test, the driving part makes the two boxes move oppositely in the vertical direction, wherein the simulated stratum in the upward moving box is the upper disc, the simulated stratum in the downward moving box is the lower disc, the force applying part applies extrusion force to the box frame to make the two boxes close to each other, at the same time, the auxiliary part applies periodic external force to each push block in the stacking plate towards the inside of the simulation box, and the external force applied by the auxiliary part on the push block from top to bottom gradually increases, so that the simulated stratum is additionally subjected to the external force applied by the auxiliary part in addition to the main extrusion force applied by the force applying part, so that the vibration change of the simulated stratum during the formation of the thrust fault along the contact surface of the two boxes is closer to the damage condition of the real stratum during the formation of the thrust fault, so that the result of the simulation test is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0048] In order to more clearly illustrate the technical solutions in the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only illustrate the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0049] Figure 1 The structural schematic diagram of the present application;

[0050] Figure 2 The partial bottom view of the simulation box in the present application;

[0051] Figure 3 The connection schematic diagram of the box bottom plate and the support plate in the present application;

[0052] Figure 4 The structural schematic diagram of one of the boxes in the present application;

[0053] Figure 5 The enlarged view of A in the present application; Figure 4 The enlarged view of A in the present application;

[0054] Figure 6 The enlarged view of B in the present application; Figure 4 The enlarged view of B in the present application;

[0055] Figure 7 The enlarged view of C in the present application; Figure 6 The enlarged view of C in the present application;

[0056] Figure 8 The connection diagram of the splicing block in the application;

[0057] Figure 9 The structure diagram of the extension plate in the application Figure 1 ;

[0058] Figure 10 The enlarged view of D in the application Figure 9 ;

[0059] Figure 11 The enlarged view of E in the application Figure 9 ;

[0060] Figure 12 The enlarged view of F in the application Figure 9 ;

[0061] Figure 13 The partial sectional view of the circular ring plate in the application

[0062] Figure 14 The structure diagram of the extension plate in the application Figure 2 ;

[0063] Figure 15 The enlarged view of G in the application Figure 14 ;

[0064] Figure 16 The simulation result of the two-way hierarchical control example performed by the device in the application.

[0065] The figure is marked as:

[0066] 1, fixed platform; 2, box bottom plate; 3, box side plate; 4, first telescopic cylinder; 5, support plate; 6, push block; 7, bottom sliding plate; 8, bottom sliding groove; 9, outer extension rod; 10, first spring; 11, first screw; 12, extension plate; 13, motor; 14, surface sliding groove; 15, vertical plate; 16, rotating disc; 17, circular ring plate; 18, connecting frame; 19, third telescopic cylinder; 20, hinged rod; 21, swing rod; 22, first rotating hole; 23, first rotating shaft; 24, through slot; 25, adjusting block; 26, second rotating hole; 27, second screw; 28, second screw hole; 29, main gear; 30, side ring cavity; 31, ring rack; 32, limiting block; 33, abutting block; 34, splicing block; 35, first screw hole; 36, rotating cavity; 37, side sliding block; 38, side sliding groove; 39, insertion block; 40, insertion slot; 41, side wall hole; 42, side through hole; 43, positioning rod; 44, inner cavity; 45, connecting hole; 46, push rod; 47, first electromagnet; 48, second electromagnet; 49, second telescopic cylinder; 50, baffle; 51, inner sliding plate; 52, outer sliding groove; 53, second rotating shaft; 54, through hole; 55, auxiliary sliding groove; 56, auxiliary sliding block. DETAILED DESCRIPTION

[0067] In order to make the objects, technical solutions and advantages of the present application clearer, further specific embodiments are explained below.

[0068] It should be noted that, unless otherwise defined, technical terms or scientific terms used in the present application should be understood as their common meanings to those skilled in the art. The terms “first”, “second” and similar terms used in the present application do not represent any order, number or importance, but are only used to distinguish different components. The terms “include” or “contain” and similar terms mean that the elements or objects before the terms cover the elements or objects listed after the terms and their equivalents, without excluding other elements or objects. The terms “connect” or “connected” and similar terms are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. The terms “up”, “down”, “left”, “right” and the like are only used to represent relative positional relationships, which can change accordingly when the absolute positions of the described objects change.

[0069] In a first aspect of the present application, a thrust fault structure simulation test system is provided, as shown in Figure 1 、 Figure 2 、 Figure 4 The system includes a hollow open box-shaped simulation box formed by two relatively slidable boxes, and the contact surfaces of the two boxes are inclinedly arranged. The box includes:

[0070] A box bottom plate 2 and an oppositely arranged box side plate 3, the box side plate 3 is fixed to the upper surface of the box bottom plate 2, and the box side plate 3 and the box bottom plate 2 form a box frame;

[0071] A baffle 50 arranged on the inner side of the box side plate 3, and the upper surface of the box bottom plate 2 is provided with a stacking area, and the baffle 50 is located outside the stacking area;

[0072] A stacking plate placed on the stacking area, the stacking plate includes a plurality of mutually stacked push blocks 6;

[0073] The system further includes:

[0074] A force applying part for applying a pressing force to the box frame to make the two boxes close to each other;

[0075] A driving part for enabling the two boxes to move relative to each other in the vertical direction;

[0076] An auxiliary part for applying a periodic external force to each push block 6 in the stacking plate towards the inside of the simulation box, and when the auxiliary part applies an external force to the push block 6, the external force applied by the auxiliary part to the push block 6 gradually increases from top to bottom.

[0077] In the embodiment, before the simulation test is performed, the positions of the boxes are adjusted so that the two boxes are oppositely arranged, then a corresponding number of push blocks 6 are sequentially stacked in the stacking area according to the thickness of the simulated stratum to form a stacking plate, and after the completion, the simulated stratum is placed into the simulation box. Here, the vibration sensors can be placed at different depths of the simulated stratum to collect vibration data during the simulation test, and the vibration data is directly uploaded to the computer for subsequent research. The simulated stratum refers to a micro crust model which is formed by reducing the formal crust in proportion, and the composition of the model is consistent with that of the real crust to ensure the accuracy of the test results. During the simulation test, the driving part moves the two boxes in the vertical direction, wherein the simulated stratum in the upward moving box is the upper disc, and the simulated stratum in the downward moving box is the lower disc. The force applying part applies extrusion force to the box frame to make the two boxes close to each other. Meanwhile, the auxiliary part applies periodic external force to each push block 6 in the stacking plate towards the inside of the simulation box, and the external force applied by the auxiliary part on the push blocks 6 from top to bottom gradually increases. In this way, in addition to the main extrusion force applied by the force applying part, the simulated stratum also receives the external force applied by the auxiliary part, so that the vibration change of the simulated stratum during the formation of the thrust fault along the contact surface of the two boxes is closer to the damage condition of the real stratum during the formation of the thrust fault, and the result of the simulation test is more accurate. Here, the change of the extrusion force at the same depth of the crust is simplified as a periodic change, which is for the convenience of the design of the whole system. Since the simulated stratum is reduced in proportion according to the real stratum, although the periodicity of the extrusion force at the same depth of the real stratum is irregular, it can be simplified as a periodic change after being reduced in proportion.

[0078] In addition, as shown in Figure 1 , Figure 2 , preferably, a plurality of plate assemblies are arranged above the stacking area, and the plate assembly comprises opposite inner sliding plates 51 fixed to the inner side of the corresponding box side plate 3. The two ends of the push block 6 are provided with outer sliding grooves 52 corresponding to the inner sliding plates 51, so as to ensure that the push block 6 is more stable after being stacked.

[0079] As an embodiment, as shown in Figure 1 , Figure 3 , Figure 4 , the driving part comprises:

[0080] a support plate 5 corresponding to the box and a bottom sliding plate 7 arranged at the bottom of the box bottom plate 2. The upper surface of the support plate 5 is provided with a bottom sliding groove 8, and the bottom sliding plate 7 is in sliding connection with the bottom sliding groove 8.

[0081] at least one first telescopic cylinder 4 fixedly connected with the support plate 5;

[0082] a fixed platform 1 fixedly connected with the bottom of the first telescopic cylinder 4.

[0083] In the embodiment, the box body is driven by the first telescopic cylinder 4 to realize the movement of the box body in the vertical direction, and the box body can move in the horizontal direction by the bottom sliding plate 7 when the box body is subjected to the extrusion force.

[0084] In addition, the structure of the force applying part can be as shown in Figure 1 、 Figure 3 、 Figure 4 The force applying part includes at least one second telescopic cylinder 49, the cylinder body of the second telescopic cylinder 49 is fixed to the support plate 5, and the output shaft of the second telescopic cylinder 49 is fixed to the box frame. During the test, the second telescopic cylinder 49 applies an external force to the box frame, so that the box body can generate extrusion to the simulated stratum.

[0085] As an embodiment, as shown in Figure 1 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 9 、 Figure 10 The auxiliary part includes:

[0086] The abutting block 33 and the outer extension rod 9 fixed to the outer side surface of the push block 6, the abutting block 33 is provided with a through hole 54, and the outer extension rod 9 is in sliding connection with the through hole 54;

[0087] The first spring 10 sleeved on the outer extension rod 9, one end of the first spring 10 is fixed to one side of the abutting block 33, and the other end of the first spring 10 is fixed to the outer side surface of the push block 6;

[0088] The first screw rod 11 and the splicing block 34 provided with the first screw hole 35, the first screw rod 11 is in threaded connection with the corresponding first screw hole 35, one side of the abutting block 33 is provided with a rotating cavity 36, and the bottom end of the first screw rod 11 is provided with a rotating end, and the rotating end is in rotating connection with the rotating cavity 36;

[0089] The extension plate 12 provided on the outer side of the box bottom plate 2, and the upper surface of the extension plate 12 is provided with a surface sliding groove 14;

[0090] The vertical plate 15 in sliding connection with the surface sliding groove 14 at the bottom end, and the side surface of the vertical plate 15 is provided with a side sliding groove 38;

[0091] An external force assembly for periodically applying an external force to the vertical plate 15;

[0092] The side sliding block 37 provided on one side of the splicing block 34, the side sliding block 37 is matched with the side sliding groove 38, and when the side sliding block 37 enters the side sliding groove 38, the side sliding block 37 is in sliding connection with the side sliding groove 38;

[0093] When a plurality of pushing blocks 6 are stacked on the stacking area, corresponding splicing blocks 34 are stacked on each other from top to bottom to form an integral splicing plate, and part or all of the side sliding blocks 37 in the splicing plate enter into the side sliding grooves 38, and the splicing plate is provided with a locking assembly for locking adjacent splicing blocks 34 to each other.

[0094] In this embodiment, in order to facilitate the mutual stacking of the splicing blocks 34, the position of the abutting block 33 needs to be adjusted, therefore, first place one of the push blocks 6 above the stacking area, at this time, the first spring 10 will be in a natural state as it is not subjected to additional pushing force, thus it will be possible that the side sliding block 37 on the splicing block 34 cannot be located directly above the side sliding groove 38, at this time, the first screw 11 needs to be rotated, the position of the splicing block 34 will change until the side sliding block 37 is located directly above the side sliding groove 38, thus when the push block 6 is placed on the stacking area, the side sliding block 37 can also smoothly enter the side sliding groove 38, if it is not operated in this way, after the push block 6 is placed on the stacking area, an additional external force is needed to fix the push block 6 directly above the stacking area, then an external force is needed to push the splicing block 34 so that the side sliding block 37 moves to directly above the side sliding groove 38, thus the side sliding block 37 can enter the side sliding groove 38, and it also needs to ensure that the external force applied to the push block 6 cannot be removed before the simulated stratum enters the simulation box, such operation will be very inconvenient. After the first push block 6 is placed on the stacking area according to the above operation, the remaining push blocks 6 can also be operated according to the above operation, so that the push blocks can be smoothly stacked together, the adjacent splicing blocks 34 are fixed through the locking assembly, at this time, all the first springs 10 are in a natural state, after the simulated stratum is placed into the simulation box, the position of the abutting block 33 is adjusted through the first screw 11, so that the distance between the abutting block 33 and the corresponding push block 6 in the direction from top to bottom is getting farther and farther, thus the elastic force applied by the first spring 10 to the corresponding push block 6 is also getting smaller and smaller in the direction from top to bottom, achieving the purpose of simulating the situation that the crust at different depths is subjected to extrusion force. Due to the resistance of the simulated stratum, the external force applied by the first spring 10 is insufficient to cause the position of the push block 6 to change, when the simulation test is performed, the force applying part needs to apply the main extrusion force, at the same time, the driving part needs to act, so that the two boxes are extruded to each other, during the extrusion of the two boxes to each other, the external force assembly periodically applies external force to the standing plate 15, so as to simulate the change of the external force applied to the crust at the same depth at different time points, as the standing plate 15 is subjected to periodic change of external force, the push block 6 is also subjected to some vibrational displacement through the first spring 10, so that the simulated stratum generates corresponding response and is captured by the vibration sensor. Here, although the push block 6 will displace, the position is relatively small compared with the position of the box as a whole, therefore, the position will soon be restored to the original position through the simulated stratum under the movement of the box, so as to keep the push block 6 stable.

[0095] In addition, preferably, the front end of the extension rod 9 is provided with a limiting block 32, when the abutting block 33 is in contact with the limiting block 32, the first spring 10 is in a natural state, thus preventing the abutting block 33 from falling off the extension rod 9.

[0096] As an implementation, as shown in Figure 1 、 Figure 4 、 Figure 6 、 Figure 7 、 Figure 8 The locking assembly comprises:

[0097] The plug 39 is arranged at the bottom of the splicing block 34, the top of the splicing block 34 is provided with a slot 40, the sidewall of the slot 40 is provided with a sidewall hole 41, the other sidewall of the slot 40 is provided with a side through hole 42 penetrating the lateral surface of the splicing block 34, the sidewall hole 41 is opposite to the side through hole 42, when the splicing blocks 34 are stacked, the plug 39 enters the slot 40;

[0098] The push rod 46 is threadedly connected with the side through hole 42, the plug 39 is provided with a connecting hole 45 penetrating the lateral surface thereof, when the plug 39 enters the slot 40, a part of the push rod 46 is used to enter the connecting hole 45;

[0099] The positioning rod 43 and the end block arranged at the bottom of the positioning rod 43, the inside of the plug 39 is provided with an inner cavity 44, the positioning rod 43 is slidingly connected with the connecting hole 45, the end block is slidingly connected with the inner cavity 44, a part of the positioning rod 43 is used to enter the sidewall hole 41;

[0100] The first electromagnet 47 arranged in the end block and the second electromagnet 48 arranged in the inner cavity 44, the first electromagnet 47 and the second electromagnet 48 are used to generate suction force after being powered.

[0101] In the embodiment, the locking principle of the locking assembly is as follows: before the two splicing blocks 34 are stacked, the first electromagnet 47 and the second electromagnet 48 are powered to generate suction force, so that the positioning rod 43 completely enters the inside of the plug 39, when the two splicing blocks 34 are stacked and spliced, the plug 39 will enter the slot 40, here, the plug 39 is preferably a polygonal block, the slot 40 is matched with the plug 39, so that the side through hole 42 is just opposite to the connecting hole 45 after the plug 39 enters the slot 40, at this time, the first electromagnet 47 and the second electromagnet 48 are powered off, then the push rod 46 is rotated, so that a part of the push rod 46 gradually enters the connecting hole 45 and finally enters the inner cavity 44, the positioning rod 43 is pushed, so that a part of the positioning rod 43 enters the sidewall hole 41, thereby locking the two splicing blocks 34. After the simulation test is completed, the simulated stratum in the simulation box needs to be taken out, in order to facilitate the taking out, the push block 6 in the stacking area needs to be taken out, after the push block 6 is taken out, in order to facilitate the installation of the push block 6 next time, the splicing blocks 34 need to be separated, the principle of separating the splicing blocks 34 is as follows: first, the push rod 46 is rotated to make the push rod 46 separate from the connecting hole 45, then the first electromagnet 47 and the second electromagnet 48 are powered to make the positioning rod 43 completely enter the plug 39, so that the two splicing blocks 34 can be separated.

[0102] As an implementation form, as shown in Figure 1 、 Figure 4 、 Figure 6 、 Figure 9 、 Figure 11 、 Figure 12 The external force assembly includes:

[0103] The motor 13 and the rotating disc 16 arranged on the output shaft of the motor 13, the motor 13 is arranged on the extension plate 12;

[0104] The hinged rod 20 hinged at one end to the extension plate 12, the other end of the hinged rod 20 is provided with a first rotating hole 22;

[0105] The swing rod 21 and the first rotating shaft 23 arranged on the swing rod 21, the first rotating shaft 23 is rotatably connected with the first rotating hole 22;

[0106] The second rotating shaft 53 and the adjusting block 25 arranged on the rotating disc 16, the second rotating shaft 53 is fixed to one end of the swing rod 21, the side surface of the adjusting block 25 is provided with a second rotating hole 26, the second rotating shaft 53 is rotatably connected with the second rotating hole 26;

[0107] The auxiliary sliding block 56 hinged at the other end of the swing rod 21, the auxiliary sliding block 56 is slidably connected with the auxiliary sliding groove 55 arranged on the side surface of the vertical plate 15.

[0108] In this embodiment, during the simulation test, after the motor 13 is started, a crank-rocker mechanism is formed by the rotating disc 16, the swing rod 21 and the hinged rod 20, so that the external force applied by the swing rod 21 to the vertical plate 15 changes periodically, of course, the rotating speed of the motor 13 is adjustable, so that the frequency of the force applied by the hinged rod 20 to the vertical plate 15 is adjustable, so that the stress condition of the simulated stratum is closer to the reality.

[0109] As an implementation form, as shown in Figure 1 、 Figure 4 、 Figure 6 、 Figure 9 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 The end surface of the rotating disc 16 is provided with a through slot 24, the adjusting block 25 is slidably connected with the through slot 24, and the system further includes:

[0110] The second screw rod 27, the adjusting block 25 is provided with a second screw hole 28, the second screw rod 27 is threadedly connected with the second screw hole 28, one end of the second screw rod 27 is rotatably connected with the top wall of the through slot 24, and the other end of the second screw rod 27 passes through the side hole arranged on the side surface of the rotating disc 16;

[0111] The driving assembly for driving the second screw rod 27 to rotate.

[0112] In the embodiment, after the motor 13 is started, the second screw 27 is driven to rotate by the driving assembly, so that the position of the adjusting block 25 is changed, and the periodic external force on the push block 6 is changed, so that the simulated stratum is subjected to the extrusion force, and the simulated stratum is more consistent with the extrusion force in the process of forming the reverse fault.

[0113] Here, a structure of the driving assembly is introduced, as shown in Figure 1 、 Figure 4 、 Figure 6 、 Figure 9 、 Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 The driving assembly comprises:

[0114] The circular ring plate 17 is sleeved outside the rotating disc 16, the inner side surface of the circular ring plate 17 is provided with a side ring cavity 30, and the upper and lower inner walls of the side ring cavity 30 are provided with ring racks 31;

[0115] The main gear 29 is arranged on the second screw 27, and the main gear 29 is matched with the ring racks 31;

[0116] The third telescopic cylinder 19 is arranged on the extension plate 12, and the connecting frame 18 is arranged on the output shaft of the third telescopic cylinder 19, and the connecting frame 18 is fixedly connected with the circular ring plate 17.

[0117] In the embodiment, the two ring racks 31 are divided into a first driving rack and a second driving rack, when the third telescopic cylinder 19 makes the main gear 29 mesh with the first driving rack, the adjusting block 25 moves inward, so that the periodic external force on the vertical plate 15 gradually decreases, when the third telescopic cylinder 19 makes the main gear 29 mesh with the second driving rack, the adjusting block 25 moves outward, so that the periodic external force on the vertical plate 15 gradually increases, and through the third telescopic cylinder 19, the position of the adjusting block 25 can be changed under the continuous work of the motor 13.

[0118] The first telescopic cylinder 4, the second telescopic cylinder 49 and the third telescopic cylinder 19 can be air cylinders or hydraulic cylinders.

[0119] Based on the experimental system, an example simulation of bidirectional extrusion, layered system control and structural deformation is carried out, as shown in Figure 16 The left side baffle is gradually decreased according to the hierarchical extrusion amount from bottom to top, which is less than 5%, and the purpose of differential compression of the application is achieved.

[0120] Those skilled in the art should understand that the above discussion of any embodiment is only intended to be illustrative and is not intended to be in any way limiting as to the scope of the present application, including the claims that follow it; the above embodiments or technical features among different embodiments can also be combined, steps can be implemented in any order, and there are many other changes to the different aspects of the present application as described above, which are not provided in details for the sake of brevity.

[0121] The present application is intended to cover all such alternatives, modifications, and variations as fall within the broad scope of the appended claims. Accordingly, any one of the above-described embodiments of the present application can be further modified than or combined with another in addition to the changes discussed in the above description.

Claims

1. A simulation test system for reverse fault structures, comprising a hollow, open-shaped simulation box enclosed by two relatively slidable chambers, wherein the contact surfaces of the two chambers are inclined, characterized in that, The enclosure includes: Box bottom plate (2) and box side plate (3) arranged opposite to each other, the box side plate (3) is fixed to the upper surface of the box bottom plate (2), the box side plate (3) and the box bottom plate (2) form a box frame; A baffle (50) is provided on the inner side of the side panel (3) of the box, and a stacking area is provided on the upper surface of the bottom plate (2) of the box, and the baffle (50) is located outside the stacking area; A stacking board placed on a stacking area, the stacking board comprising a plurality of stacked push blocks (6); The system also includes: The force-applying part used to apply compressive force to the box frame so that the two boxes are brought closer together; A drive unit used to enable two boxes to move relative to each other in the vertical direction; An auxiliary part is used to apply a periodic external force toward the interior of the simulation box to each push block (6) in the stacked plate. When the auxiliary part applies an external force to the push block (6), the external force applied by the auxiliary part to the push block (6) in the top-to-bottom direction gradually increases. The drive unit includes: A support plate (5) corresponding to the box body and a bottom slide plate (7) provided at the bottom of the box bottom plate (2). The upper surface of the support plate (5) is provided with a bottom slide groove (8), and the bottom slide plate (7) is slidably connected to the bottom slide groove (8). At least one first telescopic cylinder (4) with its output shaft fixedly connected to the support plate (5); A fixed platform (1) is fixedly connected to the bottom of the first telescopic cylinder (4); The force-applying part includes at least one second telescopic cylinder (49), the cylinder body of the second telescopic cylinder (49) is fixed to the support plate (5), and the output shaft of the second telescopic cylinder (49) is fixed to the box frame; The auxiliary unit includes: The abutment block (33) and an extension rod (9) with one end fixed to the outer side of the push block (6) are provided. The abutment block (33) is provided with a through hole (54). The extension rod (9) is slidably connected to the through hole (54). A first spring (10) is sleeved on the extension rod (9). One end of the first spring (10) is fixed to one side of the abutment block (33), and the other end of the first spring (10) is fixed to the outer side of the push block (6). The first screw (11) and the splicing block (34) with the first screw hole (35) are threadedly connected. The first screw (11) is threadedly connected to the corresponding first screw hole (35). The abutment block (33) has a rotating cavity (36) on one side. The bottom end of the first screw (11) has a rotating end, and the rotating end is rotatably connected to the rotating cavity (36). An extension plate (12) is provided on the outside of the bottom plate (2) of the box, and the upper surface of the extension plate (12) is provided with a surface groove (14); A vertical plate (15) whose bottom end is slidably connected to the surface groove (14), and the side surface of the vertical plate (15) is provided with a side groove (38); External force assembly used to periodically apply external force to the opposing plate (15); A side slider (37) is provided on one side of the splicing block (34). The side slider (37) matches the side sliding groove (38). When the side slider (37) enters the side sliding groove (38), the side slider (37) and the side sliding groove (38) are slidably connected. Several push blocks (6) are stacked on the stacking area, and the corresponding splicing blocks (34) are stacked from top to bottom to form a whole splicing plate. Some or all of the side sliders (37) in the splicing plate enter the side sliding groove (38), and the splicing plate is provided with a locking component for locking adjacent splicing blocks (34) together.

2. The reverse fault structure simulation test system according to claim 1, characterized in that, The front end of the extension rod (9) is provided with a limiting block (32), and when the abutment block (33) contacts the limiting block (32), the first spring (10) is in a natural state.

3. A reverse fault structure simulation test system according to claim 1 or 2, characterized in that, The locking assembly includes: An insert (39) is provided at the bottom of the splicing block (34). The top of the splicing block (34) is provided with a slot (40). The side wall of the slot (40) is provided with a side wall hole (41). The other side wall of the slot (40) is provided with a side through hole (42) that penetrates the outer side of the splicing block (34). The side wall hole (41) is directly opposite the side through hole (42). When the splicing blocks (34) are stacked together, the insert (39) enters the slot (40). A push rod (46) is threadedly connected to the side through hole (42). The insert (39) is provided with a connecting hole (45) that passes through both sides of the insert. When the insert (39) enters the slot (40), a part of the push rod (46) is used to enter the connecting hole (45). The positioning rod (43) and the end block located at the bottom of the positioning rod (43) are provided. The insert block (39) has an inner cavity (44). The positioning rod (43) is slidably connected to the connecting hole (45). The end block is slidably connected to the inner cavity (44). A part of the positioning rod (43) is used to enter the side wall hole (41). A first electromagnet (47) is provided in the end block and a second electromagnet (48) is provided in the inner cavity (44). The first electromagnet (47) and the second electromagnet (48) are used to generate an attractive force when energized.

4. A reverse fault structure simulation test system according to claim 1 or 2, characterized in that, The external force component includes: The motor (13) and the turntable (16) disposed on the output shaft of the motor (13), the motor (13) being disposed on the extension plate (12); A hinge rod (20) is hinged to an extension plate (12) at one end, and a first rotating hole (22) is provided at the other end of the hinge rod (20); A swing arm (21) and a first rotating shaft (23) disposed on the swing arm (21), wherein the first rotating shaft (23) is rotatably connected to the first rotating hole (22); The second rotating shaft (53) and the adjusting block (25) provided on the turntable (16) are provided. The second rotating shaft (53) is fixed to one end of the swing rod (21). The side surface of the adjusting block (25) is provided with a second rotating hole (26). The second rotating shaft (53) is rotatably connected to the second rotating hole (26). An auxiliary slider (56) is hinged to the other end of the rocker arm (21), and the auxiliary slider (56) is slidably connected to an auxiliary groove (55) provided on the side surface of the upright plate (15).

5. The reverse fault structure simulation test system according to claim 4, characterized in that, The turntable (16) has a through groove (24) on its end face, and the adjusting block (25) is slidably connected to the through groove (24). The system also includes: The second screw (27) is provided with a second screw hole (28) on the adjusting block (25). The second screw (27) is threadedly connected to the second screw hole (28). One end of the second screw (27) is rotatably connected to the top wall of the through groove (24), and the other end of the second screw (27) passes through the side hole provided on the side surface of the turntable (16). A drive assembly for driving the rotation of the second screw (27).

6. The reverse fault structure simulation test system according to claim 5, characterized in that, The driving component includes: A ring plate (17) is fitted around the turntable (16). The inner surface of the ring plate (17) is provided with a side ring cavity (30). The upper and lower inner walls of the side ring cavity (30) are provided with ring toothed racks (31). A main gear (29) is mounted on the second screw (27), and the main gear (29) is matched with the ring rack (31); A third telescopic cylinder (19) is provided on the extension plate (12) and a connecting frame (18) is provided on the output shaft of the third telescopic cylinder (19). The connecting frame (18) is fixedly connected to the annular plate (17).

7. The reverse fault structure simulation test system according to claim 1, characterized in that, Several plate assemblies are provided above the stacking area. Each plate assembly includes an inner sliding plate (51) with opposite sides. The inner sliding plate (51) is fixed to the inner side of the corresponding box side plate (3). The push block (6) has outer sliding grooves (52) at both ends corresponding to the inner sliding plate (51).

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