CN114322924A - Experimental device for simulating settlement mechanism of tunnel and overlying strata in variable-inclination stratum - Google Patents
Experimental device for simulating settlement mechanism of tunnel and overlying strata in variable-inclination stratum Download PDFInfo
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- CN114322924A CN114322924A CN202111155200.0A CN202111155200A CN114322924A CN 114322924 A CN114322924 A CN 114322924A CN 202111155200 A CN202111155200 A CN 202111155200A CN 114322924 A CN114322924 A CN 114322924A
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- 238000004088 simulation Methods 0.000 claims abstract description 46
- 238000009412 basement excavation Methods 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000004062 sedimentation Methods 0.000 abstract description 8
- 238000002474 experimental method Methods 0.000 description 13
- 238000000034 method Methods 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The invention provides an experimental device for simulating a tunnel and overlying stratum sedimentation mechanism in a variable-inclination-angle stratum, which effectively solves the problem of experimental simulation of the tunnel and overlying sedimentation mechanism under the condition that an actual tunnel and overlying stratum thereof are not horizontal strata but have any inclination-angle strata.
Description
Technical Field
The invention relates to an experimental device, in particular to an experimental device for simulating a settlement mechanism of a tunnel and an overlying stratum in a variable-inclination stratum.
Background
The tunnel excavation will cause the stress field and the displacement field of the surrounding rock within a certain range to change, and the disturbance is generated to the surrounding stratum, so that the surrounding, the overlying stratum and the earth surface are often caused to subside, and the development of the tunnel excavation physical simulation experiment is an important means for researching the subsidence rule. In the past, a simulation device mainly simulates a horizontal stratum, and generally is difficult to carry out a physical simulation test on the stratum with an inclined angle above a tunnel, and the simulation of different inclined angles is difficult to realize on the simulated stratum in the experimental process. Therefore, a device capable of realizing physical similarity simulation of the strata covering different inclination angles on the tunnel is needed. Meanwhile, in the process of needing an experiment, an auxiliary experiment needs to be carried out by changing the stratum angle, the stratum under different inclination angles needs to be simulated, the inclination angle can be automatically converted in the process of switching the inclination angle, meanwhile, the conversion does not need manpower, the inclination angle can be adjusted in real time in the conversion process, and the inclination angle can be completely controlled.
The real-time monitoring and guiding are needed to be carried out on the middle simulated stratum in the process of controlling the inclination angle, the stratum cannot deform unexpectedly, the influence on the result is finally caused, the inclination angle needs to be adjusted, the inner stratum is changed according to the adjusted expected result in real time, and the accuracy of the experimental result can be guaranteed.
Disclosure of Invention
Aiming at the situation and overcoming the defects of the prior art, the invention provides an experimental device for simulating a tunnel in a stratum with a variable inclination angle and an overlying stratum sedimentation mechanism, which effectively solves the problem of the sedimentation experiment induced by the simulation of the tunnel mining under the working condition that the actual stratum has different inclination angles, and the technical proposal for solving the problem is that the experimental device comprises sensors and is characterized by also comprising sedimentation simulation boxes for bearing various simulation layers and various sensors, wherein the left side of the lower end surface of each sedimentation simulation box is rotationally connected with the left side of the upper end surface of a supporting seat, a rotating shaft is fixedly connected with the lower end surface of each sedimentation simulation box, the part of the rotating shaft extending out of the supporting seat is fixedly connected with an angle pointer, each sedimentation simulation box consists of a square bottom plate, a front baffle fixedly connected with the front side surface of the bottom plate and a rear baffle fixedly connected with the rear side surface of the bottom plate, and arc-shaped grooves penetrating through the front baffle and the rear baffle are respectively arranged on the left side surface and the right side surface of the bottom plate, all rotate in the arc wall and be connected with the dwang, equal fixedly connected with hang plate on the dwang, the hang plate width is the same with preceding baffle trailing flank to the distance between the backplate leading flank, the dwang stretches out the pointer of the equal fixedly connected with perpendicular to dwang axis in preceding baffle position, fixed connection in the front on the baffle with pointer matched with calibrated scale, the hang plate upper end is rotated and is connected with the parallel bar, respectively fixedly connected with backup pad between preceding baffle on left side hang plate left side and right side hang plate right side and the backplate, be equipped with hang plate angle adjusting device between left side backup pad and the left side hang plate, be equipped with hang plate angle fixing device between right side backup pad and the right side hang plate, be located and be equipped with hydraulic jack under the lower plate between bottom surface right side and the supporting seat right side.
Preferably, the inclined plate angle adjusting device comprises a threaded sleeve which is longitudinally and rotatably connected to the left supporting plate, a threaded adjusting rod is rotatably connected in the threaded sleeve, a left connecting sleeve is rotatably connected to the right end of the threaded adjusting rod, the left end of the left connecting sleeve is rotatably connected with the right end of the threaded adjusting rod, and the right end of the left connecting sleeve is longitudinally and rotatably connected with the left side face of the left inclined plate.
Preferably, the inclined plate angle fixing device comprises a positioning sleeve which is longitudinally connected to the right supporting plate in a rotating mode, a plurality of clamping teeth are evenly distributed on the inner side face of the positioning sleeve at intervals, a positioning rod is connected in the positioning sleeve in a sliding mode, a clamping block matched with the clamping teeth in the positioning sleeve is fixed on the positioning rod, the positioning rod is connected with the positioning sleeve in a sliding mode when the clamping block and the clamping teeth are staggered, and the clamping block and the clamping teeth are matched and combined to enable the positioning rod and the positioning sleeve not to slide when the positioning rod rotates ninety degrees.
Preferably, the left end of the positioning rod is rotatably connected with a right connecting sleeve, the left end of the right connecting sleeve is longitudinally and rotatably connected with the right side surface of the right inclined plate, and the right end of the right connecting sleeve is rotatably connected with the left end surface of the positioning rod.
Preferably, the rotating rod rotatably connected in the arc-shaped groove is rotatably connected with the arc-shaped groove in a sealing manner, and the inclined plate fixedly connected to the rotating rod is slidably connected with the front baffle and the rear baffle in a sealing manner.
Preferably, the parallel rods are composed of front parallel rods and rear parallel rods, the left ends of the front parallel rods are longitudinally and rotatably connected with the front end of the upper end face of the left inclined plate, the right ends of the front parallel rods are longitudinally and rotatably connected with the front end of the upper end face of the right inclined plate, the left ends of the rear parallel rods are longitudinally and rotatably connected with the rear end of the upper end face of the left inclined plate, the right ends of the rear parallel rods are longitudinally and rotatably connected with the rear end of the upper end face of the inclined plate, the upper end faces of the front parallel rods and the rear parallel rods are always kept in a plane, and the front parallel rods are parallel to the front side faces of the rear parallel rods.
Preferably, the hydraulic jack is located in an accommodating groove formed in the right side of the upper end face of the supporting seat and formed downwards, the upper end of the hydraulic jack is longitudinally and rotatably connected with the right side of the lower bottom face of the lower bottom plate, and the lower end of the hydraulic jack is longitudinally and rotatably connected with the lower bottom face of the accommodating groove.
Preferably, the rear baffle is provided with a tunnel excavation opening.
Preferably, the sensor is a pressure sensor or a displacement sensor.
The invention has the beneficial effects that: the following problems are solved; 1. the inclination angle of the settlement simulation box can be accurately adjusted in the using process; 2. the inclination angle can be accurately reflected in the adjusting process, the inclination angle of the inclined plate is adjusted to be consistent with the inclination angle of the simulation box, and the accuracy of experimental data can be effectively improved; 3. the inclination angle of the settlement simulation box can be compared with the support angle of the inclined plate; 4. the inclined plates on the left side and the right side are always kept in a vertical state during the experiment; 5. in the process of filling the simulation layer, the simulation box can be adjusted to the angle in the experiment, and then the experiment simulation layer is filled, so that the angle and the thickness of the filled simulation layer are both in accordance with the thickness of the simulation layer required in the experiment; 6. make the sensor keep the parallel just can guarantee that the sensor is vertical state when the experiment with the hang plate all the time when setting up the sensor, make the experimental data more accurate.
Drawings
FIG. 1 is an overall schematic view of the present invention.
FIG. 2 is an enlarged view of the area A of the present invention.
Fig. 3 is a cross-sectional view of the present invention.
FIG. 4 is an enlarged view of the area B of the present invention.
Fig. 5 is a partial cross-sectional view of the present invention.
FIG. 6 is an enlarged view of the area C of the present invention.
Reference numerals
1. The hydraulic tunnel excavation device comprises a supporting seat, 2 parts of a hydraulic jack, 3 parts of a settlement simulation box, 4 parts of a rotating shaft, 5 parts of an angle pointer, 6 parts of a lower bottom plate, 7 parts of a front baffle plate, 8 parts of a rear baffle plate, 9 parts of an arc-shaped groove, 10 parts of a rotating rod, 11 parts of an inclined plate, 12 parts of a dial scale, 13 parts of a parallel rod, 14 parts of a supporting plate, 15 parts of an inclined plate angle adjusting device, 16 parts of an inclined plate angle fixing device, 17 parts of a threaded sleeve, 18 parts of a threaded adjusting rod, 19 parts of a left connecting sleeve, 20 parts of a positioning sleeve, 21 parts of a latch, 22 parts of a positioning rod, 23 parts of a fixture block, 24 parts of a right connecting sleeve, 25 parts of an accommodating groove and 26 parts of a tunnel excavation opening.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings 1 to 6.
In the embodiment, when the device is used, the supporting seat 1 of the experimental device is firstly placed on the horizontal hard ground, the hydraulic jack 2 is adjusted to lift the right end of the settlement simulation box 3 upwards to the angle required by the experiment, the angle pointer 5 fixedly connected with the extending part of the front side surface of the rotating connection part of the left end surface of the settlement simulation box 3 and the supporting seat 1 indicates the inclination angle of the settlement simulation box 3 at the moment, then the hydraulic jack 2 is stopped and the hydraulic jack 2 is kept in the original position after the pointer indicates the required angle, the threaded adjusting rod 18 on the inclination angle adjusting device on the left side surface of the left inclined plate 11 is adjusted at the moment to ensure that the inclination angle of the inclined plate 11 is rotated to be consistent with the inclination angle of the settlement simulation box 3, and the parallel rods 13 are rotatably connected with the upper ends of the inclined plates 11 on the left side and the right side, so that the inclination angles of the inclined plates 11 on the left side and the right side are always kept to be the same by the parallel rods 13, then the inclination angle fixing device is rotated by ninety degrees to fix the angle of the inclined plate 11, the sensor is placed at the position to be measured, the direction of the sensor is kept parallel to the inclined plate 11, the power supply of the sensor is connected with a computer, a settlement simulation layer is laid layer by layer at the moment, the upper surface of the first layer is consistent with the horizontal plane when the first layer is laid, the simulation layer is flattened and compacted after the first layer is laid, then the simulation layer on the upper layer is filled, the hydraulic jack 2 is put down after the first layer is filled in sequence, the settlement simulation device is placed for three to five days, the experiment is started after the ground layer is relatively stable, the hydraulic jack 2 is communicated with a hydraulic pump during the experiment, the right end of the simulation box is lifted upwards under the action of hydraulic pressure, the whole simulation box is inclined, the action of the hydraulic jack 2 is stopped when the inclination angle of the simulation box is adjusted to be the same as the angle of the inclined plate 11, and make hydraulic jack 2 keep the normal position, switch on the power of sensor and connect the information processing computer this moment, open tunnel excavation mouth 26 and simulate the excavation tunnel, and the data that the real-time supervision sensor passed back, empty the stratum in the simulation case after collecting experimental data, withdraw the sensor, then 2 return with hydraulic jack, rotatory hang plate angle fixing device 16 of anticlockwise cancels the hang plate 11 location again, adjustment hang plate angle adjusting device 15 is with hang plate 11 return, then carry out the experiment when simulating the different inclination of case again and collect data.
The device comprises a data acquisition instrument connected with the output end of a sensor and a computer connected with the data acquisition instrument, wherein an underlying stratum simulation layer, a tunnel simulation layer arranged above the underlying stratum simulation layer, and a plurality of geological simulation layers F1 and F2 … … Fn arranged on the tunnel simulation layer are arranged, a tunnel excavation opening 26 is arranged, an adjusting flange is arranged on the tunnel excavation opening 26, the sensor comprises a displacement sensor and a pressure sensor, the displacement sensor and the pressure sensor are respectively connected to the corresponding data acquisition instrument through data lines, and a displacement sensor and a pressure sensor are arranged in each of the plurality of geological simulation layers F1 and F2 … … Fn, and the device further comprises a supporting seat 1 and a hydraulic jack 2.
Make the sensor keep the parallel just can guarantee that the sensor is vertical state when the experiment with the hang plate all the time when setting up the sensor, make the experimental data more accurate.
Further, the threaded adjusting rod 18 is rotated clockwise, the threaded adjusting rod 18 moves rightwards, the left connecting sleeve 19 is pushed to move rightwards when the threaded adjusting rod 18 moves rightwards, the left inclined plate 11 is pushed to rotate rightwards when the left connecting sleeve 19 moves rightwards and plays a role in real-time positioning, when the left inclined plate 11 needs to return, the left threaded adjusting rod 18 rotates anticlockwise, and the left inclined plate 11 returns under the pulling force of the threaded adjusting rod 18.
Further, crisscross the arranging between the cutting ferrule 21 in the position sleeve 20 and the cutting ferrule on the position rod 22 when the position rod 22 does not rotate, sliding connection between position rod 22 and the position sleeve 20, coincide between the dog 23 on the position rod 22 and the cutting ferrule 21 in the position sleeve 20 after the position rod 22 rotates ninety degrees, can only rotate and can not carry out sliding motion under the exogenic action between position rod 22 and the position sleeve 20 this moment, thereby play the support positioning effect to right side hang plate 11, after using up.
Further, when the positioning rod 22 is rotated, the connecting sleeve is rotatably connected with the positioning rod 22, so that when the positioning rod 22 is rotated, the connecting sleeve is pushed to rotate due to the effect of the threaded connection.
Furthermore, the arc-shaped groove 9 is connected with the rotating rod 10 in a sealing and rotating way so as to prevent the soil structure of the simulation layer from falling off and not to be influenced by sundries when rotating.
Furthermore, the length of the parallel rod 13 is selected to be consistent with that of the lower plate 6, the left inclined plate 11 and the right inclined plate 11 are always kept parallel to form a parallelogram structure, so that the left inclined plate 11 and the right inclined plate 11 can act simultaneously and always keep parallel when acting, the parallel rods arranged at the front and the rear can also play a supporting role, and the left inclined plate 11 and the right inclined plate 11 are prevented from being displaced by an internal simulation layer under the action of extrusion force.
Further, the hydraulic jack 2 is connected with a hydraulic pump, the hydraulic pump is connected with a control unit, the hydraulic pump pressurizes the hydraulic pump when the lower base plate 6 needs to be supported at a certain angle, the hydraulic pump supports the lower base plate 6 at a certain angle, the hydraulic pump stops and locks when the lower base plate reaches a specified angle, the supporting plate 14 is kept at a fixed position, and when the lower base plate 6 needs to return, the hydraulic pump slowly descends under the control of the control unit and is accommodated in the accommodating groove 25.
Furthermore, the containing groove 25 arranged on the rear baffle plate 8 is provided with an opening door, when a tunnel in a simulated excavation stratum needs to be simulated, the opening door is opened, and when the tunnel is not used, the opening door is closed, so that the simulated stratum is prevented from leaking.
Claims (8)
1. An experimental device for simulating a settlement mechanism of a tunnel and an overlying stratum in a variable-inclination stratum comprises sensors and is characterized by also comprising a settlement simulation box (3) for bearing each simulation layer and each sensor, wherein the left side of the lower end surface of the settlement simulation box (3) is rotatably connected with the left side of the upper end surface of a supporting seat (1), a rotating shaft (4) is fixedly connected with the lower end surface of the settlement simulation box (3), an angle pointer (5) is fixedly connected with the part of the rotating shaft (4) extending out of the supporting seat (1), the settlement simulation box (3) consists of a square lower base plate (6), a front baffle (7) fixedly connected with the front side surface of the lower base plate (6) and a rear baffle (8) fixedly connected with the rear side surface of the lower base plate (6), and arc-shaped grooves (9) penetrating through the front baffle (7) and the rear baffle (8) are respectively formed in the left side surface and the right side surface of the lower base plate (6), a rotating rod (10) is rotatably connected in the arc-shaped groove (9), inclined plates (11) are fixedly connected on the rotating rod (10), the width of each inclined plate (11) is the same as the distance from the rear side surface of the front baffle (7) to the front side surface of the rear baffle (8), pointers perpendicular to the axis of the rotating rod (10) are fixedly connected at the positions of the rotating rod (10) extending out of the front baffle (7), a dial (12) fixedly connected on the front baffle (7) and matched with the pointers, a parallel rod (13) is rotatably connected at the upper end of each inclined plate (11), supporting plates (14) are respectively and fixedly connected between the front baffle (7) and the rear baffle (8) at the left side and the right side of the left side inclined plate (11), an inclined plate angle adjusting device (15) is arranged between the left side supporting plate (14) and the left side inclined plate (11), and an inclined plate angle fixing device (16) is arranged between the right side supporting plate (14) and the right side inclined plate (11), a hydraulic jack (2) is arranged between the right side of the lower bottom surface of the lower bottom plate (6) and the right side of the supporting seat (1).
2. The experimental device for simulating the settlement mechanism of the tunnel and the overlying strata in the variable-inclination stratum according to claim 1, wherein the inclined plate angle adjusting device (15) comprises a threaded sleeve (17) which is longitudinally and rotatably connected to the left supporting plate (14), a threaded adjusting rod (18) is rotatably connected in the threaded sleeve (17), a left connecting sleeve (19) is rotatably connected at the right end of the threaded adjusting rod (18), the left end of the left connecting sleeve (19) is rotatably connected with the right end of the threaded adjusting rod (18), and the right end of the left connecting sleeve (19) is longitudinally and rotatably connected with the left side surface of the left inclined plate (11).
3. The experimental device for simulating the settlement mechanism of the tunnel and the overlying strata in the stratum with the variable inclination angle according to claim 1, wherein the inclined plate angle fixing device (16) comprises a positioning sleeve (20) which is longitudinally and rotatably connected to the right support plate (14), a plurality of clamping teeth (21) are uniformly distributed on the inner side surface of the positioning sleeve (20) at intervals, a positioning rod (22) is slidably connected in the positioning sleeve (20), a clamping block (23) which is matched with the clamping teeth (21) in the positioning sleeve (20) is fixed on the positioning rod (22), when the clamping block (23) and the clamping teeth (21) are dislocated, the positioning rod (22) is slidably connected with the positioning sleeve (20), and when the positioning rod (22) rotates ninety degrees, the clamping block (23) and the clamping teeth (21) are matched and combined to enable sliding motion between the positioning rod (22) and the positioning sleeve (20) to be incapable of being performed.
4. The experimental device for simulating the subsidence mechanism of the tunnel and the overburden stratum in the variable-inclination stratum according to claim 3, wherein a right connecting sleeve (24) is rotatably connected to the left end of the positioning rod (22), the left end of the right connecting sleeve (24) is longitudinally and rotatably connected with the right side surface of the right inclined plate (11), and the right end of the right connecting sleeve (24) is rotatably connected with the left end surface of the positioning rod (22).
5. The experimental device for simulating the settlement mechanism of the tunnel and the overlying strata in the stratum with the variable inclination angle according to claim 1, wherein the rotating rod (10) which is rotatably connected in the arc-shaped groove (9) is rotatably connected with the arc-shaped groove (9) in a sealing manner, and the inclined plate (11) which is fixedly connected with the rotating rod (10) is connected with the front baffle plate (7) and the rear baffle plate (8) in a sliding manner in a sealing manner.
6. The experimental device for simulating the settlement mechanism of the tunnel and the overburden in the variable-inclination stratum according to claim 1, wherein the parallel rods (13) comprise front parallel rods and rear parallel rods, the left ends of the front parallel rods are longitudinally and rotatably connected with the front ends of the upper end faces of the left inclination plates (11), the right ends of the front parallel rods are longitudinally and rotatably connected with the front ends of the upper end faces of the right inclination plates (11), the left ends of the rear parallel rods are longitudinally and rotatably connected with the rear ends of the upper end faces of the left inclination plates (11), the right ends of the rear parallel rods are longitudinally and rotatably connected with the rear ends of the upper end faces of the inclined plates (11), the upper end faces of the front parallel rods and the upper end faces of the rear parallel rods are always kept in a plane, and the front parallel rods and the front side faces of the rear parallel rods are parallel.
7. The experimental device for simulating the sinking mechanism of the tunnel and the overburden in the variable-inclination stratum according to claim 1, wherein the hydraulic jack (2) is located in a downward accommodating groove (25) formed in the right side of the upper end surface of the supporting seat (1), the upper end of the hydraulic jack (2) is longitudinally and rotatably connected with the right side of the lower bottom surface of the lower bottom plate (6), and the lower end of the hydraulic jack (2) is longitudinally and rotatably connected with the lower bottom surface of the accommodating groove (25).
8. The experimental device for simulating the settlement mechanism of the tunnel and the overlying strata in the stratum with the variable inclination angle as claimed in claim 1, wherein the back baffle (8) is provided with a tunnel excavation opening (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111155200.0A CN114322924A (en) | 2021-09-29 | 2021-09-29 | Experimental device for simulating settlement mechanism of tunnel and overlying strata in variable-inclination stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111155200.0A CN114322924A (en) | 2021-09-29 | 2021-09-29 | Experimental device for simulating settlement mechanism of tunnel and overlying strata in variable-inclination stratum |
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| CN114322924A true CN114322924A (en) | 2022-04-12 |
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| CN202111155200.0A Pending CN114322924A (en) | 2021-09-29 | 2021-09-29 | Experimental device for simulating settlement mechanism of tunnel and overlying strata in variable-inclination stratum |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596855A (en) * | 2015-01-09 | 2015-05-06 | 山东科技大学 | Physical similar simulation test device and physical similar simulation test method for tilted stratums |
| CN205176017U (en) * | 2015-11-11 | 2016-04-20 | 河南理工大学 | A simulation modeling experiment device for tilted stratum |
| CN105675319A (en) * | 2016-01-05 | 2016-06-15 | 西南交通大学 | Displacement synchronous control device and test method of simulation of tunnel traversing active faults |
| AU2016357869A1 (en) * | 2015-11-20 | 2018-01-25 | China University Of Mining And Technology | Mold for manufacturing circular tunnel having three-dimensional composite rock stratum and use method thereof |
| US20200292419A1 (en) * | 2019-03-11 | 2020-09-17 | China University Of Mining And Technology, Beijing | Experimental platform and experimental method for simulating coal rock disaster of coal mine stope |
| CN113281491A (en) * | 2021-06-09 | 2021-08-20 | 中国海洋大学 | Slurry shield excavation face stable model test system |
-
2021
- 2021-09-29 CN CN202111155200.0A patent/CN114322924A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104596855A (en) * | 2015-01-09 | 2015-05-06 | 山东科技大学 | Physical similar simulation test device and physical similar simulation test method for tilted stratums |
| CN205176017U (en) * | 2015-11-11 | 2016-04-20 | 河南理工大学 | A simulation modeling experiment device for tilted stratum |
| AU2016357869A1 (en) * | 2015-11-20 | 2018-01-25 | China University Of Mining And Technology | Mold for manufacturing circular tunnel having three-dimensional composite rock stratum and use method thereof |
| CN105675319A (en) * | 2016-01-05 | 2016-06-15 | 西南交通大学 | Displacement synchronous control device and test method of simulation of tunnel traversing active faults |
| US20200292419A1 (en) * | 2019-03-11 | 2020-09-17 | China University Of Mining And Technology, Beijing | Experimental platform and experimental method for simulating coal rock disaster of coal mine stope |
| CN113281491A (en) * | 2021-06-09 | 2021-08-20 | 中国海洋大学 | Slurry shield excavation face stable model test system |
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