CN114858383A - Stick smooth fault tunnel dislocation effect analogue test case - Google Patents

Stick smooth fault tunnel dislocation effect analogue test case Download PDF

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Publication number
CN114858383A
CN114858383A CN202210483881.1A CN202210483881A CN114858383A CN 114858383 A CN114858383 A CN 114858383A CN 202210483881 A CN202210483881 A CN 202210483881A CN 114858383 A CN114858383 A CN 114858383A
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China
Prior art keywords
dislocation
reciprocating
tunnel
adjusting
plates
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CN202210483881.1A
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CN114858383B (en
Inventor
袁金秀
王道远
田小路
崔光耀
宋青波
康华
张奇
吕孟伟
孙梁
张红强
刘炳华
闫军
郝晓龙
李现者
章浩天
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North China University of Technology
Fourth Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
Hebei Jiaotong Vocational and Technical College
Hebei Communications Planning Design and Research Institute Co Ltd
Original Assignee
North China University of Technology
Fourth Engineering Co Ltd of China Railway 16th Bureau Group Co Ltd
Hebei Jiaotong Vocational and Technical College
Hebei Communications Planning Design and Research Institute Co Ltd
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Publication of CN114858383A publication Critical patent/CN114858383A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M7/00Vibration-testing of structures; Shock-testing of structures
    • G01M7/02Vibration-testing by means of a shake table
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01VGEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V9/00Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)

Abstract

The invention provides a stick-slip fault tunnel dislocation simulation test box, which solves the problem that the conventional dislocation model box test device can only perform dislocation simulation with a fixed angle and in a single direction. The base is included, the proof box has all been placed at both ends about the base top, the proof box is by the bottom plate, rectangle curb plate and two are right trapezoid's regulation curb plate and constitute, every is adjusted all to open on the inclined plane of curb plate inside to it and has the diastrophism fan-shaped groove, the diastrophism fan-shaped board has all been placed to the inside in every diastrophism fan-shaped groove, the middle part of both sides face all rotates around the base has the regulation pendulum rod, the diastrophism groove has all been opened to the left and right sides of every regulation pendulum rod, sliding mounting has the diastrophism slide rail around every diastrophism inslot is equal, the equal vertical sliding mounting in the inside of the diastrophism slide rail that corresponds of one end that every diastrophism regulating plate is close to the swinging arms. The dislocation angle between the two test boxes can be changed, and the simulation test of dislocation action in different angle directions can be carried out.

Description

Stick smooth fault tunnel dislocation effect analogue test case
Technical Field
The invention relates to the technical field of tunnel simulation, in particular to a stick-slip fault tunnel dislocation simulation test box.
Background
The fault is a geological structure in which a stratum of the earth crust is fractured due to the fact that the pressure or tension generated by the movement of the earth crust exceeds the strength of the stratum and moves relatively along a fracture surface, the faults are different in size and scale, rocks are often broken on the fault zone, the fault consists of a fault surface and a broken disc, the fault surface is the fracture surface on which rock blocks are relatively displaced, the fault surface is positioned above the fault surface and is called an upper disc, the fault surface below the fault surface is called a lower disc, and the fault is divided into a hectare slip fault, a slip fault and an oblique slip fault according to the difference of relative movement modes of the upper disc and the lower disc.
The relative friction sliding of the rock blocks has two basic forms of creeping sliding and stick sliding, and stick sliding dislocation is unstable sliding and is represented by sudden large deformation dislocation of the upper and lower walls of a fault and is a main factor causing the damage of an underground structure across the fault.
At present, many cities in China are carrying out subway construction on a large scale, but such as Beijing, Wulumuqi and Taiyuan are all located in high-intensity areas, and since the trend of urban subway engineering depends on the requirements of urban traffic functions, the urban subway engineering inevitably passes through active fracture zones, such as a Beijing subway 12 line passing through a south Korea-Sun river fracture zone, a Huangzhuang-Kogying fracture zone, a south Asn-Tongxian fracture zone, a Tianjin subway coastal New zone B1 line-Jinlin station-Tianjin David station inter-zone tunnel passing through a sea river fracture zone, a Wuluqiqi subway 1 line passing through a plurality of active fracture zones such as nine Bay, Yama Li and Xishan, a Taiyuan subway 2 line passing through a New City-Qinxian fracture zone, and the like, a cross-active fracture zone tunnel is greatly damaged and destroyed under the action of fault-stick-slip, and therefore, the tunnel passes through a model test platform, the destruction mechanism that truly reflects the tunnel lining structure under the action of fault dislocation is researched, and the mechanism becomes the key problem to be solved.
At present, the prior dislocation model box test device in China can only carry out dislocation simulation with fixed angle and single direction, and a jack or a liquefaction system loading device is adopted in each experiment model box, so that the experiment loading device can only move along a certain direction at a fixed speed and can not simulate the reciprocating dislocation of a fault and the change of the movement speed.
Therefore, the invention provides a stick-slip fault tunnel dislocation simulation test box to solve the above problems.
Disclosure of Invention
In view of the above situation, in order to overcome the defects of the prior art, the invention provides a stick-slip fault tunnel dislocation simulation test box, which effectively solves the problems that the conventional dislocation model box test device can only perform fixed-angle unidirectional dislocation simulation, and a jack or a liquefaction system loading device is adopted in each experiment model box, so that the experiment loading device can only move along a certain direction at a fixed speed and cannot simulate the reciprocating dislocation of a fault and the change of the movement speed.
The stick-slip fault tunnel dislocation effect simulation test box comprises a base, wherein test boxes with openings at the tops and openings close to each other are placed at the left end and the right end of the top of the base, each test box consists of a bottom plate, rectangular side plates and two adjusting side plates in a right trapezoid shape, the two bottom plates are placed at the left end and the right end of the top of the base respectively, each rectangular side plate is fixedly connected to one end, far away from each other, of the two bottom plates respectively, each two adjusting side plates are fixedly connected to the front end and the rear end of each bottom plate respectively, the right-angle sides of each adjusting side plate are fixedly connected with the rectangular side plates, and a tunnel model penetrates through and is fixed between the two rectangular side plates;
a fan-shaped dislocation fan-shaped groove is formed in the inclined surface of each adjusting side plate, a fan-shaped dislocation fan-shaped plate is coaxially and slidably placed in each dislocation fan-shaped groove, swing grooves are formed in the middles of the front side surface and the rear side surface of the base, an adjusting swing rod positioned above the base is rotatably installed in each swing groove, a swing rod shaft is coaxially and fixedly connected between the two adjusting swing rods, dislocation grooves are formed in the left side surface and the right side surface of each adjusting swing rod, a dislocation slide rail with a U-shaped cross section is slidably installed in each dislocation groove in the front and rear direction, a plurality of dislocation springs are connected between the front side surface and the rear side surface of each dislocation slide rail and the front and rear inner walls of each dislocation slide rail, and one end, close to each swing rod, of each dislocation adjusting plate is vertically and slidably installed in the corresponding dislocation slide rail;
every adjust the curb plate and link up and be curved dislocation constant head tank, every towards all opening in the one side in the base outside with the dislocation sector groove equal fixedly connected with is located the inside positioning bolt of the dislocation constant head tank that corresponds, every on the side of dislocation regulating plate equal threaded connection has the location swivel nut, every on the positioning bolt all open the locating hole of a plurality of evenly distributed in dislocation constant head tank both sides on the side of adjusting the curb plate, every the location swivel nut is connected with the holding ring, every towards the coaxial rotation in one side of adjusting the curb plate all be connected with two locating pins on the holding ring, the internally mounted of base has the dislocation drive arrangement who is located two proof boxes below.
Preferably, the front end of the swing rod shaft is coaxially and fixedly connected with a swing rod worm gear, the front side surface of the base is fixedly provided with a swing rod motor, and a swing rod worm meshed with the swing rod worm gear is fixedly connected to a rotating shaft of the swing rod motor.
Preferably, the top of the base is provided with two leakage-proof grooves respectively positioned below the two bottom plates close to one end, the two leakage-proof grooves are internally provided with leakage-proof plates in a vertical sliding mode, each leakage-proof spring is connected between the bottom of each leakage-proof plate and the bottom of each leakage-proof groove, and each reset tension spring is fixedly connected between each adjusting side plate and the base.
Preferably, open at the top of base has two drive grooves that are located two bottom plates below respectively, every all rotate between the side around the drive groove and install the dislocation camshaft, every two limiting plates of the bottom fixedly connected with of bottom plate, coaxial slidable mounting has two dislocation cams that are located between two limiting plates on the dislocation camshaft, the front end of dislocation camshaft runs through the base and is connected with the cam motor of fixed mounting on the base leading flank.
Preferably, every all rotate between the side around the drive groove and install the reciprocal drive shaft that is located the dislocation camshaft below, coaxial fixed mounting has reciprocating lever on the reciprocal drive shaft, it has reciprocal helicla flute to open on reciprocating lever's the surface, every reciprocating chute has all been opened on the left and right sides face in drive groove, two slidable mounting has the reciprocating slide who is located between two dislocation cams between the reciprocating chute, reciprocating slide's bottom fixedly connected with is located the reciprocal round pin of reciprocal helicla flute, the front end of reciprocal drive shaft runs through the base and is connected with the reciprocating motor of fixed mounting on the base leading flank.
Preferably, two the tunnel mounting hole has all been run through at the middle part of rectangle curb plate, two install the gasbag on the medial surface of tunnel mounting hole, two equal fixed mounting has the grip ring coaxial with the tunnel mounting hole in the one side in the rectangle curb plate outside the base, run through and threaded connection has a plurality of bolts of holding between the inside and outside face of grip ring, every it all rotates to be connected with centre gripping rubber ball to hold the one end that the bolt is located the grip ring inside, the tunnel model is in between a plurality of centre gripping rubber balls.
The use method of the stick-slip fault tunnel dislocation effect simulation test box comprises the following steps: a. fixing a tunnel model: the tunnel model penetrates through the space between the two clamping rings, the tunnel model is clamped and fixed by using a plurality of clamping bolts, and then the two air bags are inflated, so that the air bags seal the outer side of the tunnel model;
b. adjusting the angle of the dislocation action simulation test: the four positioning screw sleeves are rotated to enable the positioning pins to be separated from the positioning holes, the swing rod motor is started to drive the swing rod worm and the swing rod worm gear to rotate to adjust the angles of the two adjusting swing rods, when the two adjusting swing rods swing, the two staggered fan-shaped plates can be driven to shrink towards the insides of the two corresponding staggered fan-shaped grooves, the other two staggered fan-shaped plates slide out of the insides of the two corresponding staggered fan-shaped grooves, after the angle of the adjusting swing rods is adjusted, the four positioning screw sleeves are rotated to enable the positioning pins to be inserted into the corresponding positioning holes again for fixing, then the insides of the two test boxes can be filled with materials for simulating tunnel surrounding rocks, and the simulated surrounding rock materials are river sand and sawdust which are manufactured according to the proportion of 5: 1;
c. driving of a vertical dislocation action simulation test: after the work preparation is finished, the cam motor on one side can be opened to drive the two dislocation cams to rotate, the two dislocation cams can provide upward and continuous thrust for the test box positioned above the two dislocation cams when rotating (the test box simulates the upper plate of the dislocation, can move, the other test box simulates the lower plate of the dislocation and does not move), and the test box can drive the two dislocation sector plates to slide in the two dislocation slide rails along the direction of the dislocation slide rails to perform dislocation when receiving the upward thrust, so that the simulation test of the vertical dislocation action of the tunnel is realized;
c. driving of transverse dislocation action simulation test: the reciprocating motor capable of opening one side drives the reciprocating rod to rotate, the reciprocating rod can drive the reciprocating pin and the reciprocating sliding plate to move back and forth through the reciprocating spiral groove when rotating, so that the two dislocation cams are driven to move back and forth on the dislocation cam shaft, the limiting plates on the two sides of the two dislocation cams drive the whole test box to move in the front and back directions when the two dislocation cams move back and forth, and the two dislocation sector plates on the test box drive the dislocation slide rail to move back and forth in the dislocation groove, so that a simulation test of the transverse dislocation effect of the tunnel is realized.
Compared with the prior art, the invention has the following advantages:
1. the two test boxes can adjust the four dislocation fan-shaped plates by adjusting the angle of the adjusting swing rod, so that the dislocation angle between the two test boxes is changed, and a dislocation action simulation test in different angle directions can be carried out;
2. through the dislocation slide rails which are arranged in the four dislocation grooves in a front-back sliding mode, when driving force in the front-back direction is applied to the test boxes, the two test boxes can perform a simulation test on dislocation action in the front-back direction;
3. the test box and the dislocation sector plate can continuously provide upward thrust for the test box through the rotation of the dislocation cam, so that the test box and the dislocation sector plate can be along the dislocation slide rail, the simulation of the dislocation action of the two test boxes in the vertical direction is carried out, when the reciprocating rod is rotated, the dislocation cam can be driven to move back and forth through the reciprocating slide plate, the test box, the dislocation sector plate and the dislocation slide rail are driven to move back and forth in the dislocation groove, and the simulation of the dislocation action of the two test boxes in the front and back direction is realized;
4. when the proof box made a relative movement upwards, the leak-proof plate rises upwards simultaneously under the action of the leak-proof spring, the top surface of the leak-proof plate is always contacted with the bottom of the proof box, the simulation surrounding rock material inside the proof box is prevented from reaching the lower part of the proof box, and the proof box can not reset.
Drawings
Fig. 1 is a perspective view of the present invention.
Fig. 2 is a schematic front view of the present invention.
Fig. 3 is a schematic structural view of the offset sector grooves and the offset sector plates in the adjusting side plate of the invention.
Fig. 4 is a front sectional view of the base of the present invention.
Fig. 5 is a schematic structural diagram of the adjusting swing link, the sliding track and the sector plate.
FIG. 6 is a schematic structural view of a positioning screw sleeve, a positioning hole and a positioning pin according to the present invention.
Fig. 7 is a schematic view of the structural installation of the dislocation cam and the reciprocating lever of the present invention.
Fig. 8 is a schematic sectional view showing the structure of the dislocation cam and the reciprocating lever of the present invention.
Fig. 9 is a schematic view of the structure between the clamp ring and the tunnel model according to the present invention.
Fig. 10 is a schematic plan view of a plurality of retaining bolts for retaining and securing the arch top tunnel according to the present invention.
Fig. 11 is a schematic plan view of a plurality of holding bolts for clamping and fixing a circular tunnel according to the present invention.
Detailed Description
The foregoing and other aspects, features and advantages of the invention will be apparent from the following more particular description of embodiments of the invention, as illustrated in the accompanying drawings in which reference is made to figures 1 to 11. The structural contents mentioned in the following embodiments are all referred to the attached drawings of the specification.
Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.
The invention discloses a stick-slip fault tunnel dislocation effect simulation test box, which comprises a base 1, wherein test boxes 2 with openings at the tops and one sides being close to each other are respectively arranged at the left end and the right end of the top of the base 1, each test box 2 consists of a bottom plate 201, rectangular side plates 202 and two adjusting side plates 203 in a right trapezoid shape, the two bottom plates 201 are respectively arranged at the left end and the right end of the top of the base 1, a certain distance is reserved between the ends close to each other, each rectangular side plate 202 is respectively and fixedly connected to one end, far away from each other, of the two bottom plates 201, each two adjusting side plates 203 are respectively and fixedly connected to the front end and the rear end of each bottom plate 201, right-angle edges of the two adjusting side plates are fixedly connected with the rectangular side plates 202, and a tunnel model 01 penetrates through and is fixed between the two rectangular side plates 202;
a fan-shaped stagger fan-shaped groove 3 is formed in the inclined surface of each adjusting side plate 203 towards the inside, a fan-shaped stagger fan-shaped plate 4 is coaxially and slidably arranged in each stagger fan-shaped groove 3, the stagger fan-shaped plate 4 can slide towards the inside of the stagger fan-shaped groove 3 and can also slide outwards from the inside of the stagger fan-shaped groove 3, swing grooves 5 are formed in the middles of the front side surface and the rear side surface of the base 1, the swing grooves 5 are positioned between the two bottom plates 201, an adjusting swing rod 6 positioned above the base 1 is rotatably arranged in each swing groove 5, the two adjusting swing rods 6 can swing between the adjusting side plates 203, the left side surface of each adjusting swing rod 6 can be attached to the inclined surfaces of the two adjusting side plates 203 on the left side when swinging leftwards, the right side surface of each adjusting swing rod 6 can be attached to the inclined surfaces of the two adjusting side plates 203 on the right side when swinging rightwards, and a swing rod shaft 7 is coaxially and fixedly connected between the two adjusting swing rods 6, the swing rod shaft 7 can enable two adjusting swing rods 6 to swing synchronously, the left side and the right side of each adjusting swing rod 6 are provided with a stagger groove 8, a stagger slide rail 9 with a U-shaped cross section is arranged in each stagger groove 8 in a front-back sliding manner, each stagger slide groove 9 can slide in each stagger groove 8 in a front-back sliding manner, a plurality of stagger springs 10 are connected between the front side surface and the back side surface of each stagger slide rail 9 and the front inner wall and the back inner wall of each stagger groove 8, the stagger slide rail 9 can be always positioned in the middle of each stagger groove 8 under the action of the stagger springs 10 on the two sides, the stagger springs 10 can be compressed when the stagger slide rail 9 slides in the stagger groove 8 in a front-back manner, one end of each stagger plate 4 close to the swing rod 5 is vertically and slidably arranged in the corresponding stagger slide rail 9, and the stagger plate 4 can slide in the stagger slide rail 9 up and down as shown in figure 1, the two adjusting swing rods 6 and the four staggered fan-shaped plates 4 form a complete large test box between the two test boxes 2, when the two adjusting swing rods 6 swing to the left side, the two staggered fan-shaped plates 4 positioned on the left side can be driven to slide towards the inner parts of the two staggered fan-shaped grooves 3 on the left side, and the two staggered fan-shaped plates 4 on the right side slide from the inner parts and the outer parts of the two staggered fan-shaped grooves 3 on the right side, so that the angle of the staggered action between the two test boxes 2 is adjusted;
every adjust curb plate 203 and all open on the one side towards the base 1 outside and have and be curved diastrophism constant head tank 11 with diastrophism sector groove 3 link up, diastrophism constant head tank 11 and diastrophism sector groove 3 coaxial setting, every equal fixedly connected with on the side of diastrophism regulating plate 4 is located the positioning bolt 12 of the inside diastrophism constant head tank 11 that corresponds, when diastrophism sector groove 3 coaxial displacement under diastrophism sector plate 4, can drive positioning bolt 12 and remove in diastrophism constant head tank 11, every positioning bolt 12 is last equal threaded connection have positioning swivel nut 13 can rotate and axial displacement on positioning bolt 12, every all open a plurality of evenly distributed locating holes 14 in diastrophism constant head tank 11 both sides on the side of adjusting curb plate 203, every positioning swivel nut 13 is connected with holding ring 15 towards the coaxial rotation on the one side of adjusting curb plate 203, the positioning rings 15 can rotate on the positioning thread sleeves 13, each positioning ring 15 is connected with two positioning pins 16, after the angle of the adjusting swing rod 6 is adjusted, the four staggered fan-shaped plates 4 are required to be divided into half parts to be fixed with the corresponding adjusting side plates 203, the four positioning thread sleeves 13 can be rotated to move towards the positioning holes 14 at the moment, so that the two positioning pins 16 can enter the corresponding two positioning holes 14, then the positioning thread sleeves 13 are continuously rotated to enable the positioning pins 16 to be completely inserted into the positioning holes 14, fixing can be achieved, at the moment, each test box 2 and the corresponding two staggered fan-shaped plates 4 form a whole, a staggered driving device located below the two test boxes 2 is installed inside the base 1, and the staggered driving device can provide staggered power for the two test boxes 2;
when in use, firstly, the tunnel model 01 is transversely and fixedly arranged between two test boxes 2, then the angle of the adjusting swing rods 6 is adjusted, so that the four staggered fan-shaped plates 4 move in the four staggered fan-shaped grooves 3 along with the two adjusting swing rods 6, after the adjustment of the staggered angle is finished, the four staggered fan-shaped plates 4 and the corresponding adjusting side plates 203 are fixed through the positioning bolts 13, then materials for simulating surrounding rocks are put into the two test boxes 2, the materials for simulating the surrounding rocks are river sand and sawdust which are manufactured according to the proportion of 5:1, the materials are tamped in the test boxes 2, the staggered driving device is started, so that upward and continuous thrust can be provided for the test boxes 2 positioned above the staggered driving device (one test box 2 simulates a fault, and is movable, the other test box 2 simulates a lower plate of the fault, and is not movable, and the two test boxes 2 can be alternately used for a staggered test), the test box 2 can move upwards after being subjected to an upward thrust, but because one end of each of the two dislocation fan-shaped plates 4 fixedly connected with the test box 2 is in vertical sliding connection with the dislocation slide rail 9, the test box 2 can drive the two dislocation fan-shaped plates 4 to slide along the directions of the two dislocation slide rails 9 when being subjected to an upward force at the moment, namely, the two dislocation fan-shaped plates perform a dislocation action with the other test box 2, and the dislocation angle between the two test boxes 2 can be changed by changing the angle of the adjusting swing rod 6;
when the dislocation driving device provides force in the front-back direction for the test boxes 2, one test box 2 moves back and forth, so that the two dislocation fan-shaped plates 4 fixedly connected with the test box are driven to move back and forth, the two dislocation slide rails 9 are driven to slide back and forth in the two dislocation grooves 8, and the dislocation springs 10 on the front side and the rear side of the dislocation slide rails 9 are compressed, so that the dislocation action in the front-back direction is realized between the two test boxes 2.
In the second embodiment, on the basis of the first embodiment, a swing rod worm gear 17 is coaxially and fixedly connected to the front end of the swing rod shaft 7, the swing rod worm gear 17 can drive the swing rod shaft 7 and the two adjusting swing rods 6 to synchronously rotate when rotating, a swing rod motor 18 is fixedly mounted on the front side surface of the base 1, the swing rod motor 18 is connected with a power supply and a controller, a swing rod worm 19 meshed with the swing rod worm gear 17 is fixedly connected to the rotating shaft of the swing rod motor 18, the swing rod motor 18 can drive the swing rod worm 19 to rotate, so that the swing rod worm gear 17 is driven to rotate, an angle scale line can be arranged at a position, below the adjusting swing rods 6, on the base 1, and angle adjustment is facilitated.
In the third embodiment, on the basis of the second embodiment, two anti-leakage grooves 20 respectively located below one end of the two bottom plates 201 are formed in the top of the base 1, anti-leakage plates 21 are vertically and slidably mounted in the two anti-leakage grooves 20, an anti-leakage spring 22 is connected between the bottom of each anti-leakage plate 21 and the bottom of each anti-leakage groove 20, when the test box 2 moves upwards, the anti-leakage plate 21 at the bottom slides upwards under the elastic force of the anti-leakage spring 22, the anti-leakage plate 21 can be pressed into the anti-leakage groove 20 when the test box 2 moves downwards, so that the top surface of the anti-leakage plate 21 is always attached to the bottom plate 201, the situation that the material simulating the surrounding rock inside the test box 2 falls below the bottom plate 201 when the test box 2 is lifted, the test box 2 cannot reset to the top surface of the base 1 and the material of the surrounding rock is simulated is leaked is avoided, a reset tension spring 23 is fixedly connected between each adjusting side plate 203 and the base 1, when the test box 2 moves upwards or moves back and forth, the reset tension spring 23 is stretched to store force, so that the test box 2 is helped to reset to the top surface of the base 1.
In the fourth embodiment, on the basis of the third embodiment, the dislocation driving device includes two driving grooves 24 formed in the top of the base 1 and respectively located below the two bottom plates 201, a dislocation cam shaft 25 is rotatably installed between the front side and the rear side of each driving groove 24, two limiting plates 26 are fixedly connected to the bottom of each bottom plate 201, two dislocation cams 27 located between the two limiting plates 26 are coaxially and slidably installed on the dislocation cam shaft 25, the dislocation cam shaft 25 can drive the two dislocation cams 27 to rotate, so as to provide upward thrust for the test box 2, the two dislocation cams 27 can axially slide on the dislocation cam shaft 25, so as to push the two limiting plates 26 to enable the test box 2 to move back and forth, the front end of the dislocation cam shaft 25 penetrates through the base 1 and is connected with a cam motor 28 fixedly installed on the front side of the base 1, the cam motor 28 is connected with a power supply and a controller, and the two dislocation cams 27 can be driven to rotate by starting the cam motor 28.
In the fifth embodiment, on the basis of the fourth embodiment, a reciprocating driving shaft 29 located below the dislocation cam shaft 25 is rotatably installed between the front side surface and the rear side surface of each driving groove 24, a reciprocating rod 30 is coaxially and fixedly installed on the reciprocating driving shaft 29, the reciprocating driving shaft 29 can drive the reciprocating rod 30 to rotate, a reciprocating spiral groove 31 is formed in the outer surface of the reciprocating rod 30, the reciprocating spiral groove 31 is composed of two spiral grooves, the head parts of the two spiral grooves are communicated, the tail parts of the two spiral grooves are communicated, reciprocating sliding grooves 32 are formed in the left side surface and the right side surface of each driving groove 24, a reciprocating sliding plate 33 located between the two dislocation cams 27 is slidably installed between the two reciprocating sliding grooves 32, the two dislocation cams 27 can be pushed to move back and forth when the reciprocating sliding plate 33 slides back and forth, the two limiting plates 26 can be pushed to move back and forth when the two dislocation cams 27 move back and forth, so as to drive the test box 2 to move back and forth, the bottom of the reciprocating sliding plate 33 is fixedly connected with a reciprocating pin 34 positioned in a reciprocating spiral groove 31, the reciprocating rod 30 can drive the reciprocating sliding plate 33 to move back and forth through the matching of the reciprocating spiral groove 31 and the reciprocating pin 34 when rotating, the front end of the reciprocating driving shaft 29 penetrates through the base 1 to be connected with a reciprocating motor 40 fixedly installed on the front side surface of the base 1, the reciprocating motor 40 is connected with a power supply and a controller, the reciprocating motor 40 is started to realize the front and back dislocation of the test box, when the cam motor 28 and the reciprocating motor 40 are started simultaneously, the dislocation cam 27 rotates to provide upward thrust for the test box 2, and meanwhile, the back and forth thrust is also provided for the test box 2, so that the simulation of the dislocation effect in multiple directions is realized.
Sixth embodiment, on the basis of the fifth embodiment, tunnel mounting holes 35 penetrate through the middle portions of the two rectangular side plates 202, air bags 36 are mounted on the inner side surfaces of the two tunnel mounting holes 35, the air bags 36 are connected with an air pump, the air pump is connected with a power supply and a controller, clamping rings 37 coaxial with the tunnel mounting holes 35 are fixedly mounted on the surfaces of the two rectangular side plates 202 facing the outer side of the base 1, a tunnel model 01 is located in the middle portions of the two tunnel mounting holes 35 and the two clamping rings 37, sealing of the inner side and the outer side of the test box 2 is achieved through the expanded air bags 36, leakage of internal materials is prevented, a plurality of clamping bolts 38 penetrate through and are in threaded connection between the inner side and the outer side surfaces of the clamping rings 37, a clamping rubber ball 39 is rotatably connected to one end of each clamping bolt 38 located inside the clamping ring 37, and the tunnel model 01 is located among the clamping rubber balls 39, the clamping rubber balls 39 can be driven to move towards the tunnel model 01 by rotating the clamping bolts 38, and the clamping rubber balls 39 tightly clamp the tunnel model 01, so that the tunnel model 01 is fixed, the shape of the cross section of the tunnel model 01 can be any shape, the tunnel model 01 in the attached drawing 10 is the cross section of an arch tunnel, and the tunnel model 01 in the attached drawing 11 is the cross section of a circular tunnel.
The use method of the stick-slip fault tunnel dislocation effect simulation test box comprises the following steps:
a. fixing a tunnel model: the tunnel model 01 passes through the two clamping rings 37, the tunnel model 01 is clamped and fixed by using a plurality of clamping bolts 38, and then the two air bags 36 are inflated, so that the air bags 36 seal the outer side of the tunnel model 01;
b. adjusting the angle of the dislocation action simulation test: the four positioning screw sleeves 13 are rotated to separate the positioning pins 16 from the positioning holes 14, the swing rod motor 18 is started to drive the swing rod worm 19 and the swing rod worm gear 17 to rotate to adjust the angles of the two adjusting swing rods 6, when the two adjusting swing rods 6 swing, the two staggered fan-shaped plates 4 can be driven to shrink towards the inner parts of the corresponding two staggered fan-shaped grooves 3, the other two staggered fan-shaped plates 4 slide out of the corresponding two staggered fan-shaped grooves 3, after the angle adjustment of the adjusting swing rods 6 is finished, the four positioning screw sleeves 13 are rotated to enable the positioning pins 16 to be inserted into the corresponding positioning holes 14 again for fixing, then the inner parts of the two test boxes 2 can be filled with materials for simulating tunnel surrounding rocks, and the materials for simulating the tunnel surrounding rocks are river sand and sawdust which are manufactured according to the proportion of 5: 1;
c1. driving of a vertical dislocation action simulation test: after the work preparation is finished, the cam motor 28 on one side can be opened to drive the two dislocation cams 27 to rotate, when the two dislocation cams 27 rotate, the upward and continuous thrust can be provided for the test box 2 positioned above the two dislocation cams 27, the test box 2 simulates the upper disc of a fault and can move, the other test box 2 simulates the lower disc of the fault and does not move, when the test box 2 bears the upward thrust, the two dislocation fan-shaped plates 4 can be driven to slide in the two dislocation slide rails 9 along the direction of the dislocation slide rails 9 to perform dislocation, and therefore simulation test of vertical dislocation effect of the tunnel is achieved;
c2. driving of transverse dislocation action simulation test: the reciprocating motor 40 on one side capable of being opened drives the reciprocating rod 30 to rotate, the reciprocating rod 30 can drive the reciprocating pin 34 and the reciprocating sliding plate 33 to move back and forth through the reciprocating spiral groove 31 when rotating, so that the two dislocation cams 27 are driven to move back and forth on the dislocation cam shaft 25, the two dislocation cams 27 drive the whole test box 2 to move back and forth through the limiting plates 26 positioned on the two sides of the dislocation cams 27 when moving back and forth, and the two dislocation sector plates 4 on the test box 2 drive the dislocation slide rail 9 to move back and forth in the dislocation groove 8, so that the simulation test of the transverse dislocation effect of the tunnel is realized.
Compared with the prior art, the invention has the following advantages:
1. the two test boxes can adjust the four dislocation fan-shaped plates by adjusting the angle of the adjusting swing rod, so that the dislocation angle between the two test boxes is changed, and a dislocation action simulation test in different angle directions can be carried out;
2. through the dislocation slide rails which are arranged in the four dislocation grooves in a front-back sliding mode, when driving force in the front-back direction is applied to the test boxes, the two test boxes can perform a simulation test on dislocation action in the front-back direction;
3. the test box and the dislocation sector plate can continuously provide upward thrust for the test box through the rotation of the dislocation cam, so that the test box and the dislocation sector plate can be along the dislocation slide rail, the simulation of the dislocation action of the two test boxes in the vertical direction is carried out, when the reciprocating rod is rotated, the dislocation cam can be driven to move back and forth through the reciprocating slide plate, the test box, the dislocation sector plate and the dislocation slide rail are driven to move back and forth in the dislocation groove, and the simulation of the dislocation action of the two test boxes in the front and back direction is realized;
4. when the proof box made a relative movement upwards, the leak-proof plate rises upwards simultaneously under the action of the leak-proof spring, the top surface of the leak-proof plate is always contacted with the bottom of the proof box, the simulation surrounding rock material inside the proof box is prevented from reaching the lower part of the proof box, and the proof box can not reset.

Claims (7)

1. The stick-slip fault tunnel dislocation effect simulation test box comprises a base (1) and is characterized in that test boxes (2) with openings at the tops and one side being close to each other are placed at the left end and the right end of the top of the base (1), each test box (2) is composed of a bottom plate (201), a rectangular side plate (202) and two adjusting side plates (203) in a right trapezoid shape, the two bottom plates (201) are placed at the left end and the right end of the top of the base (1) respectively, each rectangular side plate (202) is fixedly connected to one end, far away from each other, of the two bottom plates (201), each two adjusting side plates (203) are fixedly connected to the front end and the rear end of each bottom plate (201) respectively, the right-angle sides of each adjusting side plate are fixedly connected with the rectangular side plates (202), and a tunnel model (01) penetrates through and is fixed between the two rectangular side plates (202);
a fan-shaped dislocation fan-shaped groove (3) is formed in the inclined surface of each adjusting side plate (203) towards the inner part of the adjusting side plate, a fan-shaped dislocation fan-shaped plate (4) is coaxially and slidably placed in each fan-shaped groove (3), swing grooves (5) are formed in the middle of the front side surface and the rear side surface of the base (1), adjusting swing rods (6) located above the base (1) are rotatably installed in each swing groove (5), a swing rod shaft (7) is coaxially and fixedly connected between the two adjusting swing rods (6), dislocation grooves (8) are formed in the left side and the right side of each adjusting swing rod (6), dislocation slide rails (9) with U-shaped cross sections are slidably installed in the dislocation grooves (8) in the front and rear direction, and a plurality of dislocation springs (10) are connected between the front side surface and the rear side surface of each dislocation slide rail (9) and the front and rear inner walls of the dislocation grooves (8), one end of each dislocation adjusting plate (4) close to the swinging rod (5) is vertically and slidably mounted inside the corresponding dislocation sliding rail (9);
each adjusting side plate (203) is provided with a stagger positioning groove (11) which is communicated with the stagger fan-shaped groove (3) and is arc-shaped, the side surface of each stagger adjusting plate (4) is fixedly connected with a positioning bolt (12) which is positioned inside the corresponding stagger positioning groove (11), each positioning bolt (12) is provided with a positioning threaded sleeve (13) in threaded connection, the side surface of each adjusting side plate (203) is provided with a plurality of positioning holes (14) which are uniformly distributed at two sides of the stagger positioning groove (11), one surface of each positioning threaded sleeve (13) facing the adjusting side plate (203) is coaxially and rotatably connected with a positioning ring (15), and each positioning ring (15) is provided with two positioning pins (16), and a dislocation driving device positioned below the two test boxes (2) is arranged in the base (1).
2. The stick-slip fault tunnel dislocation action simulation test box according to claim 1, wherein a swing rod worm gear (17) is coaxially and fixedly connected to the front end of the swing rod shaft (7), a swing rod motor (18) is fixedly installed on the front side surface of the base (1), and a swing rod worm (19) meshed with the swing rod worm gear (17) is fixedly connected to a rotating shaft of the swing rod motor (18).
3. The stick-slip fault tunnel dislocation simulation test box according to claim 2, wherein the top of the base (1) is provided with two leak-proof grooves (20) respectively located below one end of the two bottom plates (201) close to each other, leak-proof plates (21) are respectively installed in the two leak-proof grooves (20) in a vertical sliding manner, a leak-proof spring (22) is connected between the bottom of each leak-proof plate (21) and the bottom of each leak-proof groove (20), and a reset tension spring (23) is fixedly connected between each adjusting side plate (203) and the base (1).
4. The stick-slip fault tunnel dislocation action simulation test box according to claim 3, wherein the dislocation driving device comprises two driving grooves (24) which are formed in the top of the base (1) and are respectively located below the two bottom plates (201), each of the driving grooves (24) is provided with a dislocation cam shaft (25) between the front side and the rear side in a rotating manner, each of the bottom plates (201) is fixedly connected with two limiting plates (26), two dislocation cams (27) which are located between the two limiting plates (26) are coaxially and slidably mounted on the dislocation cam shaft (25), and the front end of the dislocation cam shaft (25) penetrates through the base (1) and is connected with a cam motor (28) which is fixedly mounted on the front side of the base (1).
5. The stick-slip fault tunnel dislocation simulation test chamber according to claim 4, wherein a reciprocating drive shaft (29) is rotatably mounted between the front and rear side surfaces of each drive groove (24) below the dislocation cam shaft (25), a reciprocating rod (30) is coaxially and fixedly installed on the reciprocating driving shaft (29), a reciprocating spiral groove (31) is formed in the outer surface of the reciprocating rod (30), reciprocating sliding grooves (32) are formed in the left side surface and the right side surface of each driving groove (24), a reciprocating sliding plate (33) located between the two dislocation cams (23) is installed between the two reciprocating sliding grooves (32) in a sliding mode, the bottom of the reciprocating sliding plate (33) is fixedly connected with a reciprocating pin (34) positioned in the reciprocating spiral groove (30), the front end of the reciprocating driving shaft (29) penetrates through the base (1) and is connected with a reciprocating motor (40) fixedly arranged on the front side surface of the base (1).
6. The stick-slip fault tunnel diastrophism simulation test box according to claim 5, wherein a tunnel mounting hole (35) penetrates through the middle of each of the two rectangular side plates (202), an air bag (36) is mounted on the inner side surface of each of the two tunnel mounting holes (35), a clamping ring (37) coaxial with the tunnel mounting hole (35) is fixedly mounted on one surface of each of the two rectangular side plates (202) facing the outer side of the base (1), a plurality of clamping bolts (38) penetrate through and are in threaded connection with the inner side surface and the outer side surface of each clamping ring (37), one end, located inside the clamping ring (37), of each clamping bolt (38) is rotatably connected with a clamping rubber ball (39), and the tunnel model (01) is located among the clamping rubber balls (39).
7. The use method of the stick-slip fault tunnel slip action simulation test box according to claim 6 comprises the following steps: a. fixing a tunnel model: the tunnel model (01) penetrates between the two clamping rings (37), the tunnel model (01) is clamped and fixed through a plurality of clamping bolts (38), and then the two air bags (36) are inflated, so that the air bags (36) seal the outer side of the tunnel model (01);
b. adjusting the angle of the dislocation action simulation test: the four positioning threaded sleeves (13) are rotated to separate the positioning pins (16) from the positioning holes (14), the swing rod motor (18) is started to drive the swing rod worm (19) and the swing rod worm gear (17) to rotate to adjust the angles of the two adjusting swing rods (6), when the two adjusting swing rods (6) swing, can drive two of the staggered fan-shaped plates (4) to contract towards the inner parts of the corresponding two staggered fan-shaped grooves (3), the other two staggered fan-shaped plates (4) slide out of the corresponding two staggered fan-shaped grooves (3), after the angle of the adjusting swing rod (6) is adjusted, the four positioning screw sleeves (13) are rotated to ensure that the positioning pins (16) are inserted into the corresponding positioning holes (14) again for fixing, then, filling materials for simulating tunnel surrounding rocks into the two test boxes (2), wherein the materials for simulating the tunnel surrounding rocks are river sand and sawdust which are manufactured according to the proportion of 5: 1;
c1. driving of a vertical dislocation action simulation test: after the work preparation is finished, the cam motor (28) on one side can be opened to drive the two dislocation cams (27) to rotate, when the two dislocation cams (27) rotate, upward and continuous thrust can be provided for the test box (2) positioned above the two dislocation cams (the test box (2) simulates the upper disc of a fault, the test box can move, the other test box (2) simulates the lower disc of the fault and does not move), when the test box (2) bears the upward thrust, the two dislocation sector plates (4) can be driven to slide in the two dislocation slide rails (9) along the direction of the dislocation slide rails (9) to perform dislocation, and therefore the simulation test of the vertical dislocation effect of the tunnel is realized;
c2. driving of transverse dislocation action simulation test: the reciprocating motor (40) on one side capable of being opened drives the reciprocating rod (30) to rotate, the reciprocating rod (30) can drive the reciprocating pin (34) and the reciprocating sliding plate (33) to move back and forth through the reciprocating spiral groove (31) when rotating, so that the two dislocation cams (27) are driven to move back and forth on the dislocation cam shaft (25), the whole test box (2) is driven to move back and forth through the limiting plates (26) on the two sides of the dislocation cams (27) when moving back and forth, the two dislocation sector plates (4) on the test box (2) drive the dislocation slide rail (9) to move back and forth in the dislocation groove (8), and therefore the simulation test of the transverse dislocation effect of the tunnel is realized.
CN202210483881.1A 2022-05-06 2022-05-06 Simulation test box for dislocation of adhesive fault tunnel Active CN114858383B (en)

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