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

Abstract

The invention provides a simulation test box for the dislocation action of a stick-slip fault tunnel, which solves the problem that the existing dislocation model box test device can only perform displacement simulation at a fixed angle and in one direction. Including the base, the left and right ends of the top of the base are placed with a test box. The test box is composed of a bottom plate, a rectangular side plate and two right-angled trapezoidal adjustment side plates. The inclined surface of each adjustment side plate is open to its interior. There are staggered fan-shaped grooves, and a staggered fan-shaped plate is placed inside each staggered fan-shaped groove. The middle of the front and rear sides of the base is rotated with an adjustment pendulum, and the left and right sides of each adjustment pendulum are provided with staggered grooves. Each staggered groove is slidably installed with staggered slide rails front and rear, and one end of each staggered adjustment plate close to the swing rod is vertically slidably installed inside the corresponding staggered slide rail. In the present invention, the misalignment angle between the two test boxes can be changed, and the misalignment action simulation test in different angular directions can be performed.

Description

Simulation test box for stick-slip fault tunnel dislocation

technical field

The invention relates to the technical field of tunnel simulation, in particular to a simulation test box for the dislocation action of a stick-slip fault tunnel.

Background technique

A fault is a geological structure in which the crustal rock layer ruptures due to the pressure or tension generated by the crustal movement exceeding its own strength, and moves relatively along the rupture surface. The fault is composed of a fault plane and a fault plate. The fault plane is the rupture plane where the rock blocks undergo relative displacement. The one above the fault plane is called the hanging wall, and the one below the fault plane is called the foot wall. , divided into Qing slip fault, strike slip fault and oblique slip fault.

There are two basic forms of relative frictional sliding of rock blocks: creep and stick-slip. Stick-slip dislocation is a kind of unstable slip, which is characterized by sudden large deformation and dislocation of the upper and lower walls of the fault, which is the damage of the underground structure across the fault. main factor.

At present, many cities in my country are carrying out large-scale subway construction, but Beijing, Urumqi and Taiyuan are all located in high-intensity areas. Since the direction of urban subway projects depends on the needs of urban transportation functions, it will inevitably cross the active fault zone. For example, Beijing Metro Line 12 passes through the Nankou-Sunhe fault zone, the Huangzhuang-Gaoliying fault zone, and the Nanyuan-Tongxian fault zone, and the Tianjin Metro Binhai New Area Line B1 Phase I Jinlindao Station-Tianjin Avenue Station tunnel crosses the Haihe River The fault zone, Urumqi Metro Line 1 passes through multiple active fault zones such as Jiujiawan, Yamalik and Xishan, Taiyuan Metro Line 2 passes through the Xincheng-Qinxian fault zone, etc. The tunnel crossing the active fault zone is stick-slip on the fault. Therefore, it is a key problem to be solved to study the failure mechanism of the tunnel lining structure under the action of fault dislocation through the model test platform.

At present, the existing staggered model box test devices in China can only perform staggered simulation of a fixed angle and one direction, and each experimental model box uses a jack or a liquefaction system loading device, so that the experimental loading device can only be fixed in a fixed angle. The velocity moves in a certain direction, and it is impossible to simulate the reciprocation of the fault and the change of the movement rate.

Therefore, the present invention provides a stick-slip fault tunnel dislocation simulation test box to solve the above problems.

SUMMARY OF THE INVENTION

In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a stick-slip fault tunnel dislocation simulation test box, which effectively solves the problem of the existing dislocation model box test device, which can only perform a fixed angle and unidirectional error In addition, jacks or liquefaction system loading devices are used in each experimental model box, so that the experimental loading device can only move in a certain direction at a fixed rate, and cannot simulate the problem of fault reciprocating dislocation and movement rate changes.

A stick-slip fault tunnel dislocation simulation test box, including a base, the left and right ends of the top of the base are placed with a test box with a top opening and one side opening close to each other, each of the test boxes is composed of a bottom plate, a rectangular side The two bottom plates are respectively placed on the left and right ends of the top of the base, and each of the rectangular side plates is fixedly connected to one end of the two bottom plates away from each other. The adjusting side plates are respectively fixedly connected to the front and rear ends of the bottom plate, and the right-angle sides thereof are fixedly connected to the rectangular side plates, and a tunnel model is penetrated and fixed between the two rectangular side plates;

A fan-shaped staggered fan-shaped groove is opened on the inclined surface of each adjustment side plate toward the inside thereof, and a fan-shaped staggered fan-shaped plate is coaxially slid inside each of the staggered fan-shaped grooves. There are swing grooves in the middle of the front and rear sides of the base, and an adjustment swing rod located above the base is rotatably installed in each of the swing grooves, and a swing rod shaft is coaxially and fixedly connected between the two adjustment swing rods. There are staggered grooves on the left and right sides of each adjustment pendulum, and each of the staggered grooves is slidably installed with a “U”-shaped staggered slide rail in cross-section. A plurality of staggered springs are connected between the front and rear sides of the slide rail and the front and rear inner walls of the staggered groove, and one end of each of the staggered adjustment plates close to the swing rod is vertically slidably installed inside the corresponding staggered slide rail ;

The side of each adjustment side plate facing the outer side of the base is provided with an arc-shaped dislocation positioning slot that passes through the dislocation fan-shaped groove, and a side surface of each dislocation adjustment plate is fixedly connected with a corresponding The positioning bolts inside the staggered positioning grooves, each of the positioning bolts is threadedly connected with a positioning screw sleeve, and the side surfaces of each of the adjustment side plates are provided with a plurality of positioning bolts evenly distributed on both sides of the staggered positioning grooves A positioning ring is connected coaxially to the side of each positioning screw sleeve facing the adjustment side plate, and each positioning ring is connected with two positioning pins. Staggered drive under the box.

Preferably, the front end of the swing rod shaft is coaxially fixedly connected with a swing rod worm wheel, a swing rod motor is fixedly installed on the front side of the base, and a swing rod worm wheel is fixedly connected to the rotating shaft of the swing rod motor. of the pendulum worm.

Preferably, the top of the base is provided with two anti-leakage grooves, which are respectively located below one end of the two bottom plates that are close to each other, and two anti-leakage grooves are installed with anti-leakage plates slidably up and down. A leak-proof spring is connected between the bottom of the plate and the bottom of the leak-proof groove, and a return tension spring is fixedly connected between each adjustment side plate and the base.

Preferably, the top of the base is provided with two drive slots located under the two bottom plates respectively, and a staggered camshaft is rotatably installed between the front and rear sides of each of the drive slots, and the bottom of each of the bottom plates is fixed Two limit plates are connected, and two staggered cams located between the two limit plates are slidably installed on the staggered camshaft. The front end of the staggered camshaft penetrates through the base and is fixedly installed on the base. Cam motor connection on the front side.

Preferably, a reciprocating drive shaft located below the staggered camshaft is rotatably installed between the front and rear sides of each of the drive slots, and a reciprocating rod is coaxially fixed on the reciprocating drive shaft, and the outer surface of the reciprocating rod There are reciprocating spiral grooves on the top, and reciprocating chutes are opened on the left and right sides of each of the driving grooves. The bottom of the reciprocating slide plate is fixedly connected with a reciprocating pin located in the reciprocating spiral groove, and the front end of the reciprocating drive shaft penetrates through the base and is connected to the reciprocating motor fixed on the front side of the base.

Preferably, tunnel installation holes are formed in the middle of the two rectangular side plates, airbags are installed on the inner sides of the two tunnel installation holes, and the two rectangular side plates are fixedly installed on the side facing the outer side of the base. There is a clamping ring coaxial with the tunnel installation hole, a plurality of holding bolts are threaded between the inner and outer sides of the holding ring, and each of the holding bolts is rotatably connected with a clamp at one end inside the clamping ring. Holding rubber balls, the tunnel model is between a plurality of holding rubber balls.

The use of the stick-slip fault tunnel dislocation simulation test box is as follows: a. Tunnel model fixation: Pass the tunnel model between the two clamping rings, and use multiple holding bolts to clamp and fix the tunnel model, then Inflate the two air bags so that the air bags seal the outside of the tunnel model;

b. Adjust the angle of the misoperation simulation test: rotate the four positioning screw sleeves to separate the positioning pins from the positioning holes, start the swing rod motor to drive the swing rod worm and the swing rod worm wheel to rotate to adjust the angles of the two swing rods Adjustment, when the two adjustment pendulums swing, it can drive two of the staggered sector plates to shrink into the corresponding two staggered sector slots, and the other two staggered sector plates slide from the inside of the corresponding two staggered sector slots. After adjusting the angle of the pendulum rod, turn the four positioning screw sleeves so that the positioning pins are inserted into the corresponding positioning holes again for fixing. The rock material is river sand and sawdust in a ratio of 5:1;

c. Driving of the vertical staggered action simulation test: After the above work is completed, the cam motor on one side can be turned on to drive the two staggered cams to rotate. When the two staggered cams rotate, they can provide upward movement to the test box located above them. And continuous thrust (this test box simulates the upper wall of the fault, which is movable, and the other test box simulates the lower wall of the fault, which is inactive), when the test box is pushed upward, it can drive the two staggered sector plates to slide in the two staggered sectors. The rail slides along the direction of the staggered slide rail for staggering, so as to realize the simulation test of the vertical staggering effect of the tunnel;

c. Driving of the simulation test of lateral misalignment: the reciprocating motor on the open side drives the reciprocating rod to rotate. When the reciprocating rod rotates, it can drive the reciprocating pin and the reciprocating slide plate to move back and forth through the reciprocating spiral groove, thereby driving the two misaligned cams to move in the wrong direction. The moving camshaft moves back and forth. When the two staggered cams move back and forth, the limit plates on both sides of the two staggered cams drive the entire test box to move forward and backward. The two staggered sector plates on the test box drive the staggered slide. The rail moves back and forth in the stagger groove, so as to realize the simulation test of the lateral stagger of the tunnel.

Compared with the prior art, the present invention has the following advantages:

1. The two test boxes in the present invention can realize the adjustment of the four staggered sector plates by adjusting the angle of the adjustment pendulum rod, so that the staggered angle between the two test boxes can be changed, and different angular directions can be performed. The erroneous action simulation test;

2. By sliding the staggered rails installed in the four staggered grooves back and forth, when the driving force in the front and rear directions is applied to the test box, the two test boxes can be simulated for the staggered action in the front and rear directions;

3. The rotation of the staggered cam can continuously provide upward thrust for the test box, so that the test box and the staggered sector plate can move along the staggered slide rail, so as to simulate the staggered action of the two test boxes in the upper and lower directions. When the reciprocating rod is rotated, the staggered cam can be moved back and forth through the reciprocating slide plate, thereby driving the test box, the staggered sector plate and the staggered slide rail to move back and forth in the staggered groove, so as to realize the forward and backward direction between the two test boxes. Simulation of wrong action;

4. When the test box moves upward, the leak-proof plate rises simultaneously under the action of the leak-proof spring, and its top surface is always in contact with the bottom of the test box to prevent the simulated surrounding rock material inside the test box from reaching the bottom of the test box. The test box cannot be reset.

Description of drawings

FIG. 1 is a schematic perspective view of the present invention.

Figure 2 is a schematic front view of the present invention.

3 is a schematic structural diagram of the staggered fan-shaped groove and the staggered fan-shaped plate in the adjustment side plate of the present invention.

FIG. 4 is a schematic cross-sectional front view of the base of the present invention.

FIG. 5 is a schematic structural diagram of adjusting the pendulum rod, the staggered slide rail and the staggered sector plate according to the present invention.

6 is a schematic structural diagram of a positioning screw sleeve, a positioning hole and a positioning pin of the present invention.

7 is a schematic diagram of the structure and installation of the staggered cam and the reciprocating rod of the present invention.

8 is a schematic cross-sectional view of the structure of the staggered cam and the reciprocating rod of the present invention.

FIG. 9 is a schematic diagram of the structure between the clamping ring and the tunnel model of the present invention.

FIG. 10 is a schematic plan view of a plurality of holding bolts of the present invention for clamping and fixing a vaulted tunnel.

FIG. 11 is a schematic plan view of a circular tunnel being clamped and fixed by a plurality of holding bolts according to the present invention.

Detailed ways

The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of the embodiments with reference to FIGS. 1 to 11 . The structural contents mentioned in the following embodiments are all referenced to the accompanying drawings.

Exemplary embodiments of the present invention will be described below with reference to the accompanying drawings.

Embodiment 1, the present invention is a stick-slip fault tunnel dislocation simulation test box, including a base 1, and the left and right ends of the top of the base 1 are placed with a test box 2 with an open top and an opening on one side close to each other. The test box 2 is composed of a bottom plate 201, a rectangular side plate 202 and two right-angled trapezoidal adjustment side plates 203. The two bottom plates 201 are respectively placed on the left and right ends of the top of the base 1, and one of the ends that are close to each other. There is a certain distance between them, each of the rectangular side plates 202 is fixedly connected to one end of the two bottom plates 201 away from each other, and each of the two adjustment side plates 203 is respectively fixed to the front and rear ends of the bottom plate 201. It is fixedly connected with the rectangular side plates 202, and the tunnel model 01 is penetrated and fixed between the two rectangular side plates 202;

A fan-shaped staggered sector slot 3 is opened on the inclined surface of each adjusting side plate 203 toward the inside thereof, and a fan-shaped staggered sector is placed in the interior of each staggered sector slot 3 in a coaxial sliding manner. Plate 4, the staggered sector plate 4 can slide to the inside of the staggered sector slot 3, and can also slide from the inside of the staggered sector slot 3 to the outside. Between the two bottom plates 201, each swing slot 5 is rotatably installed with an adjustment swing rod 6 located above the base 1, the two adjustment swing rods 6 can swing between the adjustment side plates 203, and the adjustment swing rod 6 is rotatable. When swinging to the left, its left side can be in contact with the inclined surfaces of the two adjustment side plates 203 on the left side. , a pendulum shaft 7 is coaxially and fixedly connected between the two adjustment pendulum rods 6, and the pendulum rod shaft 7 can make the two adjustment pendulum rods 6 swing synchronously, and the left and right sides of each adjustment pendulum rod 6 are open There are staggered grooves 8, and each of the staggered grooves 8 is slidably installed with a “U”-shaped staggered slide rail 9 in cross-section, and each staggered chute 9 can be moved back and forth in the staggered groove 8. Sliding, a plurality of staggered springs 10 are connected between the front and rear sides of each of the staggered slide rails 9 and the front and rear inner walls of the staggered groove 8, and the staggered slide rails 9 are under the action of the staggered springs 10 on both sides. It can always be in the middle of the staggered slot 8, and the staggered slide rail 9 can compress the staggered spring 10 when sliding back and forth in the staggered slot 8. Each end of the staggered sector plate 4 close to the swing rod 5 slides vertically. Installed inside the corresponding staggered slide rail 9, the staggered sector plate 4 can slide up and down in the staggered slide rail 9, as shown in FIG. A complete large experimental box is formed between the two test boxes 2. When the two adjustment pendulums 6 swing to the left, they can drive the two staggered sector plates 4 located on the left side to move to the left. The fan-shaped slot 3 slides inside, and the two staggered sector plates 4 on the right side slide inside and outside the two staggered sector-shaped slots 3 on the right side, thereby adjusting the angle of the staggered action between the two test boxes 2;

The side of each adjusting side plate 203 facing the outer side of the base 1 is provided with an arc-shaped staggered positioning slot 11 penetrating through the staggered sector slot 3 , and the staggered positioning slot 11 and the staggered sector slot 3 are coaxially arranged , the side surfaces of each of the staggered adjustment plates 4 are fixedly connected with positioning bolts 12 located inside the corresponding staggered positioning grooves 11. When the staggered sector plate 4 moves coaxially in the staggered sector groove 3, it can The positioning bolts 12 are driven to move in the staggered positioning grooves 11. Each positioning bolt 12 is threadedly connected with a positioning screw sleeve 13. The positioning screw sleeve 13 can rotate on the positioning bolt 12 and move axially. The side of the adjustment side plate 203 is provided with a plurality of positioning holes 14 evenly distributed on both sides of the staggered positioning groove 11, and a positioning ring is coaxially connected to the side of each of the positioning screw sleeves 13 facing the adjustment side plate 203. 15. The positioning ring 15 can rotate on the positioning screw sleeve 13, and each of the positioning rings 15 is connected with two positioning pins 16. After the adjustment of the angle of the pendulum rod 6 is completed, the four staggered sector plates need to be moved. 4 and a half and the corresponding adjustment side plate 203 are fixed. At this time, the four positioning screw sleeves 13 can be rotated to move in the direction of the positioning holes 14, so that the two positioning pins 16 can enter the corresponding two positioning holes 14. Then, continue to rotate the positioning screw sleeve 13 so that the positioning pin 16 is completely inserted into the positioning hole 14 to achieve fixing. At this time, each test box 2 and the corresponding two staggered sector plates 4 are integrated. A staggered drive device is installed below the two test boxes 2, and the staggered drive device can provide staggered power to the two test boxes 2;

When in use, firstly, the tunnel model 01 is traversed and fixed between the two test boxes 2, and then the angle of the adjustment pendulum rod 6 is adjusted, so that the four staggered sector plates 4 follow the two adjustment pendulum rods 6. The four staggered fan-shaped grooves 3 are moved in, and after the adjustment of the staggered angle is completed, the four staggered sector plates 4 and the corresponding adjustment side plates 203 are fixed by the positioning bolts 13, and then moved to the inside of the two test boxes 2. Put in the material of the simulated surrounding rock. The simulated surrounding rock material is made of river sand and sawdust in a ratio of 5:1, and is tamped inside the test box 2, and the staggered drive device is activated to provide the test box 2 located above it. Upward and continuous thrust (one of the test boxes 2 simulates the upper wall of the fault and is movable, and the other test box 2 simulates the lower wall of the fault, which is inactive, and the two test boxes 2 can be used alternately for staggered tests), and the test box 2 is subjected to After the upward thrust, it can move upward, but because one end of the two staggered sector plates 4 fixedly connected with the test box 2 is vertically slidably connected with the staggered slide rail 9, when the test box 2 is subjected to an upward force at this time It will drive the two staggered sector plates 4 to slide along the direction of the two staggered slide rails 9, that is, perform a staggered action with another test box 2, and change the angle of the adjustment pendulum 6 to change the two tests. The staggered angle between boxes 2;

When the staggered driving device provides the test box 2 with force in the front and rear directions, one of the test boxes 2 will move forward and backward, thereby driving the two staggered sector plates 4 fixedly connected to it to move forward and backward, thereby driving the two staggered slide rails 9 It slides back and forth inside the two staggered grooves 8 and compresses the staggered springs 10 on the front and rear sides of the staggered slide rail 9 , so that the two test boxes 2 can realize the staggered action in the front and rear directions.

Embodiment 2, on the basis of Embodiment 1, the front end of the swing rod shaft 7 is coaxially fixedly connected with a swing rod worm wheel 17, and the swing rod worm wheel 17 can drive the swing rod shaft 7 and the two adjustment swing rods 6 to synchronize when rotating. Rotating, the front side of the base 1 is fixedly installed with a swing rod motor 18, the swing rod motor 18 is connected with a power supply and a controller, and the rotating shaft of the swing rod motor 18 is fixedly connected with the swing rod worm gear 17. The pendulum worm 19 and the pendulum motor 18 can drive the pendulum worm 19 to rotate, thereby driving the pendulum worm wheel 17 to rotate, and an angle scale line can be set on the base 1 at the position below the adjustment pendulum 6 to facilitate the adjustment of the angle.

Embodiment 3, on the basis of Embodiment 2, the top of the base 1 is provided with two anti-leakage grooves 20 located below one end of the two bottom plates 201 that are close to each other, and the two anti-leakage grooves 20 are both up and down. A leak-proof plate 21 is slidably installed, and a leak-proof spring 22 is connected between the bottom of each leak-proof plate 21 and the bottom of the leak-proof groove 20. When the test box 2 moves upward, the leak-proof plate 21 at the bottom of the leak-proof plate 21 Under the elastic force of the leak-proof spring 22, the leak-proof plate 21 can be pressed into the leak-proof groove 20 when the test box 2 moves downwards, so that the top surface of the leak-proof plate 21 is always in contact with the bottom plate 201, and the leakage prevention plate 21 is always in contact with the bottom plate 201. When the test box 2 is lifted, the material inside the simulated surrounding rock rolls down to the bottom plate 201, which causes the test box 2 to fail to reset to the top surface of the base 1 and simulates the leakage of surrounding rock materials. Each of the adjustment side plates 203 A reset tension spring 23 is fixedly connected with the base 1. When the test box 2 moves up or back and forth, the reset tension spring 23 will be stretched and stored, thereby helping the test box 2 to reset to the top surface of the base 1. .

Embodiment 4, on the basis of Embodiment 3, the staggered drive device includes two drive slots 24 opened on the top of the base 1 and located under the two bottom plates 201 respectively. The front and rear sides of each of the drive slots 24 are A staggered camshaft 25 is rotatably installed therebetween, two limit plates 26 are fixedly connected to the bottom of each bottom plate 201, and two limit plates 26 are coaxially slidably mounted on the staggered camshaft 25. The staggered cam 27 between the plates 26, the staggered camshaft 25 can drive the two staggered cams 27 to rotate, thereby providing an upward thrust to the test box 2, and the two staggered cams 27 can rotate on the staggered camshaft 25. Sliding in the direction to push the two limit plates 26 so that the test box 2 can move back and forth. The front end of the staggered camshaft 25 penetrates through the base 1 and is connected to the 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, starting the cam motor 28 can drive the two staggered cams 27 to rotate.

In the fifth embodiment, on the basis of the fourth embodiment, a reciprocating drive shaft 29 located under the staggered camshaft 25 is rotatably installed between the front and rear sides of each of the drive slots 24, and the reciprocating drive shaft 29 is coaxially mounted. A reciprocating rod 30 is fixedly installed, and the reciprocating drive shaft 29 can drive the reciprocating rod 30 to rotate. The outer surface of the reciprocating rod 30 is provided with a reciprocating spiral groove 31, and the reciprocating spiral groove 31 is composed of two spiral grooves, and the two spiral grooves The head part is connected, and the tail part is connected. Each of the left and right sides of the drive groove 24 is provided with a reciprocating chute 32, and between the two reciprocating chute 32 is slidably installed between the two staggered cams 27 There is a reciprocating slide plate 33 between the two. When the reciprocating slide plate 33 slides back and forth, it can push the two staggered cams 27 to move back and forth. The bottom of the reciprocating slide plate 33 is fixedly connected with a reciprocating pin 34 located in the reciprocating helical groove 31. When the reciprocating rod 30 rotates, the reciprocating helical groove 31 and the reciprocating pin 34 can cooperate to drive the reciprocating slide plate 33 to move back and forth. The reciprocating drive shaft The front end of 29 penetrates the base 1 and is connected with the reciprocating motor 40 fixedly installed on the front side of the base 1. The reciprocating motor 40 is connected with a power supply and a controller, and the reciprocating motor 40 can be started to realize the front and rear movement of the test box. When starting the cam motor 28 and the reciprocating motor 40, the staggered cam 27 rotates to provide upward thrust to the test box 2, and it also moves forward and backward to provide forward and backward thrust for the test box 2, thereby realizing the simulation of the staggered action in multiple directions. .

Embodiment 6, on the basis of Embodiment 5, tunnel mounting holes 35 are penetrated in the middle of the two rectangular side plates 202 , airbags 36 are installed on the inner sides of the two tunnel mounting holes 35 , and the airbags 36 are connected to each other. There is an air pump, and the air pump is connected with a power supply and a controller, and a clamping ring 37 coaxial with the tunnel mounting hole 35 is fixedly installed on the side of the two rectangular side plates 202 facing the outside of the base 1, and the tunnel model 01 is in two The tunnel mounting hole 35 and the middle of the two clamping rings 37, and the inner and outer sides of the test box 2 are sealed by the bulging air bag 36 to prevent the leakage of internal materials, and the inner and outer sides of the clamping rings 37 are threaded and connected. There are a plurality of holding bolts 38, and one end of each holding bolt 38 located inside the clamping ring 37 is rotatably connected with a holding rubber ball 39, and the tunnel model 01 is located between the plurality of holding rubber balls 39, and rotates more. The support bolts 38 can drive the plurality of clamping rubber balls 39 to move toward the tunnel model 01, and make the plurality of clamping rubber balls 39 tightly clamp the tunnel model 01, thereby realizing the fixing of the tunnel model 01. The shape of the cross section can be any shape, the tunnel model 01 in FIG. 10 is the cross section of the arched tunnel, and the tunnel model 01 in FIG. 11 is the cross section of the circular tunnel.

The use of the stick-slip fault tunnel dislocation simulation test box is as follows:

a. Tunnel model fixing: Pass the tunnel model 01 between the two clamping rings 37, and use a plurality of holding bolts 38 to clamp and fix the tunnel model 01, and then inflate the two airbags 36, so that the airbags 36 Seal the outside of the tunnel model 01;

b. Adjust the angle of the misoperation simulation test: rotate the four positioning screws 13 so that the positioning pins 16 are separated from the positioning holes 14, start the pendulum motor 18 to drive the pendulum worm 19 and the pendulum worm wheel 17 to rotate to two Adjust the angle of the pendulum rod 6 to adjust, when the two adjustment pendulum rods 6 swing, it can drive two of the staggered sector plates 4 to shrink into the corresponding two staggered fan-shaped grooves 3, and the other two staggered fan-shaped plates 4. Slide out from the inside of the corresponding two staggered fan-shaped grooves 3. After adjusting the angle of the pendulum rod 6, turn the four positioning screws 13 so that the plurality of positioning pins 16 are inserted into the corresponding positioning holes 14 again for fixing. Fill the two test boxes 2 with materials for simulating the surrounding rock of the tunnel, and the simulated surrounding rock materials are river sand and sawdust in a ratio of 5:1;

c1. Driving of the vertical dislocation simulation test: after the above-mentioned work is completed, the cam motor 28 on one side can be turned on to drive the two dislocation cams 27 to rotate, and the two dislocation cams 27 can be rotated when the two dislocation cams 27 are rotated. Box 2 provides upward and continuous thrust. This test box 2 simulates the upper wall of the fault and is movable. The other test box 2 simulates the lower wall of the fault and is inactive. When the test box 2 is pushed upward, it can drive two staggered sector plates 4 In the two staggered slide rails 9, slide along the direction of the staggered slide rails 9 to perform the staggered movement, so as to realize the simulation test of the vertical staggered movement of the tunnel;

c2. Driving of the lateral dislocation simulation test: the reciprocating motor 40 on the openable side drives the reciprocating rod 30 to rotate. When the reciprocating rod 30 rotates, it can drive the reciprocating pin 34 and the reciprocating slide plate 33 to move back and forth through the reciprocating spiral groove 31, thereby driving the two One staggered cam 27 moves back and forth on the staggered camshaft 25. When the two staggered cams 27 move back and forth, they drive the entire test box 2 to move in the front and rear directions through the limit plates 26 located on both sides of the two staggered cams 27. The two staggered sector plates 4 drive the staggered slide rails 9 to move back and forth in the staggered groove 8, so as to realize the simulation test of the lateral staggered action of the tunnel.

Compared with the prior art, the present invention has the following advantages:

1. The two test boxes in the present invention can realize the adjustment of the four staggered sector plates by adjusting the angle of the adjustment pendulum rod, so that the staggered angle between the two test boxes can be changed, and different angular directions can be performed. The erroneous action simulation test;

2. By sliding the staggered rails installed in the four staggered grooves back and forth, when the driving force in the front and rear directions is applied to the test box, the two test boxes can be simulated for the staggered action in the front and rear directions;

3. The rotation of the staggered cam can continuously provide upward thrust for the test box, so that the test box and the staggered sector plate can move along the staggered slide rail, so as to simulate the staggered action of the two test boxes in the upper and lower directions. When the reciprocating rod is rotated, the staggered cam can be moved back and forth through the reciprocating slide plate, thereby driving the test box, the staggered sector plate and the staggered slide rail to move back and forth in the staggered groove, so as to realize the forward and backward direction between the two test boxes. Simulation of wrong action;

4. When the test box moves upward, the leak-proof plate rises simultaneously under the action of the leak-proof spring, and its top surface is always in contact with the bottom of the test box to prevent the simulated surrounding rock material inside the test box from reaching the bottom of the test box. The test box cannot be 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.

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