CN109781560B - Vibration wave excitation device and method for influencing bearing deformation of filling material by mining - Google Patents
Vibration wave excitation device and method for influencing bearing deformation of filling material by mining Download PDFInfo
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- CN109781560B CN109781560B CN201910182228.XA CN201910182228A CN109781560B CN 109781560 B CN109781560 B CN 109781560B CN 201910182228 A CN201910182228 A CN 201910182228A CN 109781560 B CN109781560 B CN 109781560B
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- 239000000463 material Substances 0.000 title claims abstract description 30
- 230000005284 excitation Effects 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000005065 mining Methods 0.000 title abstract description 14
- 238000012360 testing method Methods 0.000 claims abstract description 29
- 230000001105 regulatory effect Effects 0.000 claims abstract description 10
- 239000002184 metal Substances 0.000 claims description 20
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 230000035939 shock Effects 0.000 claims description 19
- 230000001276 controlling effect Effects 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000945 filler Substances 0.000 claims 1
- 230000001939 inductive effect Effects 0.000 claims 1
- 239000003245 coal Substances 0.000 abstract description 12
- 238000010009 beating Methods 0.000 abstract description 3
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005457 optimization Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 4
- 239000010878 waste rock Substances 0.000 description 4
- 238000005056 compaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a vibration wave excitation device and a vibration wave excitation method for mining influence on bearing deformation of a filling material, which are suitable for underground detection of a coal mine and comprise an axial loading device, a loading box body and a vibration wave generation device; the loading box body is used for containing filling materials, fixing the vibration wave generating device and placing the vibration wave generating device on the electro-hydraulic servo universal testing machine; the axial loading device carries out axial loading through an electro-hydraulic servo universal testing machine; the vibration wave generating device is used for generating vibration waves and adopts a variable-frequency speed regulating motor to change the vibration frequency of the filling material. The device has simple structure and easy operation, can realize continuous beating of the filling material and generate stable vibration waves; the evolution rule of the bearing performance of the filling material under the influence of vibration can be accurately tested, so that theoretical support is provided for the design and bearing performance optimization of the filling material under the condition of deep coal mine disturbance, the design and production of a deep filling coal face are guided better, and the method has wide practicability.
Description
Technical Field
The invention relates to a vibration wave excitation device and a vibration wave excitation method, and belongs to a vibration wave excitation device and a vibration wave excitation method which are used in underground coal mine detection and influence the bearing deformation of a filling material in mining.
Background
With the long-term continuous high-intensity mining of shallow coal resources and the gradual depletion of coal resources in eastern areas in China, the coal mining depth is gradually increased, and deep mining becomes a new normal state in the development of coal industry and resource development. In deep resource exploitation, the mining method faces the hazards of high ground stress, high ground temperature, high karst water pressure, high gas and high-strength disturbance, and the concentration of the potential catastrophe process shows that the frequency and the strength of mine earthquake are obviously increased, the mine pressure of a stope is particularly strong, and the like. The solid filling coal mining technology has obvious technical advantages in the aspects of rock stratum movement control, potential catastrophe prevention and control and the like, is one of the green mining core technologies of coal mines, and is a main technical choice for solving deep resource mining. However, due to the obvious change of the deep mining environment, under the influence of frequent mine earthquake, the filling material block body can rotate, break, slide and the like, the bearing performance of the filling material block body can be greatly influenced, and the deep filling mining technology and scientific theory system can be challenged.
Disclosure of Invention
The purpose of the invention is as follows: aiming at the defects of the technology, the device and the method for exciting the vibration waves are simple in structure and good in using effect, and the vibration waves affect the bearing deformation of the filling material.
The technical scheme is as follows: the invention relates to a vibration wave excitation device for influencing the bearing deformation of a filling material by mining, which comprises an axial loading device, a loading box body and a vibration wave generation device, wherein the loading box body and the vibration wave generation device are respectively fixed on a rectangular metal base;
the axial loading device is an electro-hydraulic servo universal testing machine, the loading box body is placed on the electro-hydraulic servo universal testing machine, and axial loading is carried out through the electro-hydraulic servo universal testing machine;
the loading box body comprises a metal base and a rectangular frame body formed by four surfaces of a front side plate, a rear side plate, a left side plate and a right side plate, the front side plate, the rear side plate, the left side plate and the right side plate are fixedly connected through a plurality of bolts,
the shock wave generating device is arranged on the metal base and is close to the loading box body, the shock wave generating device comprises a motor, a conical driving change gear, a conical driven change gear, a rigid connecting rod and a backing plate, wherein the motor is fixed on the metal base through bolts, a variable frequency speed regulator is connected onto the motor, the outer end of a rotating shaft of the motor is connected and fixed with the conical driving change gear, the backing plate is arranged on the metal base between the motor and a front side plate of the loading box body, the backing plate is provided with the conical driven change gear and a sleeve matched with the conical driving change gear, the thickness of the backing plate is suitable for enabling the conical driven change gear to be just meshed with the conical driving change gear fixed on the motor, the head end of the rigid connecting rod is hinged at a hinged point of the conical driven change gear deviated from the center, and the, the length of rigid link hits when beating to the outermost side with pin joint (20) hits on the front side board of loading box just preferably to the tail end of rigid link hits and produces the shock wave on the front side board of rectangle framework. The motor adopts a variable-frequency speed-regulating motor, and the change of the vibration frequency of the filling material is realized by regulating and controlling the rotating speed of the motor.
A vibration wave excitation method for influencing the bearing deformation of filling materials comprises the following steps:
fixing a loading box body and a vibration wave generating device on corresponding positions of a metal base, loading prepared bulk waste rock samples into the loading box body in 3-6 layers, and prepressing each layer of sample by using an iron hammer;
placing a loading box body provided with a sample on a test bed of an electro-hydraulic servo universal testing machine, starting the electro-hydraulic servo universal testing machine to axially load the loading box body provided with the sample, and testing the bearing performance evolution law of the bulk waste rock;
meanwhile, the motor is started to drive the conical driven turning gear through the conical driving turning gear, the conical driven turning gear drives the rigid connecting rod to do piston motion in the sleeve, and the tail end of the rigid connecting rod is knocked on the loading box body in the piston motion, so that continuous vibration waves can be generated.
The rotating speed of the motor is controlled by regulating and controlling a variable-frequency speed regulator on the motor, so that the frequency generated by the shock wave can be changed.
Has the advantages that: the invention comprises an axial loading device, a loading box body and a shock wave generating device; the loading box body is used for containing filling materials, fixing the vibration wave generating device and placing the vibration wave generating device on the electro-hydraulic servo universal testing machine; the axial loading device carries out axial loading through an electro-hydraulic servo universal testing machine; the vibration wave generating device is used for generating vibration waves, and the motor of the vibration wave generating device adopts a variable-frequency speed regulating motor, so that the change of the vibration frequency of the filling material can be realized. The device has simple structure and easy operation, can realize continuous beating of the filling material and generate stable vibration waves; the evolution rule of the bearing performance of the filling material under the influence of vibration can be accurately tested, so that theoretical support is provided for the design and bearing performance optimization of the filling material under the condition of deep coal mine disturbance, the design and production of a deep filling coal face are guided better, and the method has wide practicability.
Drawings
FIG. 1 is a schematic view of the whole of a shock wave excitation device for influencing the load-bearing deformation of a filling material;
FIG. 2 is a front view of the shock wave generator and the loading case;
FIG. 3 is a top view of the shock wave generator and the loading case.
In the figure: 1-axial loading device; 2, loading the box body; 3-a shock wave generating device; 4-electro-hydraulic servo universal tester; 5-a metal base; 6-front side plate; 7-rear side plate; 8-left side plate; 9-right side panel; 10-bolt; 11-a motor; 12-a conical active change gear; 13-a conical driven change gear; 14-a rigid link; 15-a backing plate; 16-a bearing; 17-a rotating shaft; 18-a sleeve; 19-variable frequency speed regulator; 20-hinge point.
Detailed Description
An embodiment of the present invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 and 2, the device for exciting a shock wave for mining-influenced loading deformation of a filling material according to the present invention is characterized in that: the device comprises an axial loading device 1, a loading box body 2 and a vibration wave generating device 3, wherein the loading box body 2 and the vibration wave generating device 3 are respectively fixed on a rectangular metal base 5;
the axial loading device 1 is an electro-hydraulic servo universal testing machine 4, the loading box body 2 is placed on the electro-hydraulic servo universal testing machine 4, and axial loading is carried out through the electro-hydraulic servo universal testing machine 4;
the loading box body 2 comprises a metal base 5 and a rectangular frame body formed by four surfaces consisting of a front side plate 6, a rear side plate 7, a left side plate 8 and a right side plate 9, wherein the front side plate 6, the rear side plate 7, the left side plate 8 and the right side plate 9 are fixedly connected through a plurality of bolts 10 and are used for containing filling materials,
the shock wave generating device 3 is arranged on the metal base 5 and is close to the loading box body 2, the shock wave generating device comprises a motor 11, a conical driving change gear 12, a conical driven change gear 13, a rigid connecting rod 14 and a backing plate 15, wherein the motor 11 is fixed on the metal base 5 through bolts or welding, the motor 11 adopts a variable frequency speed regulating motor, the change of the shock frequency of a filling material is realized through regulating and controlling the rotating speed of the motor, the motor 11 is connected with a variable frequency speed regulator 19, the outer end of the rotating shaft of the motor 11 is connected and fixed with the conical driving change gear 12, the backing plate 15 is arranged on the metal base 5 between the motor 11 and the front side plate 6 of the loading box body 2, the backing plate 15 is provided with the conical driven change gear 13 and a sleeve 18 which are matched with the conical driving change gear 12, the conical driven gear 13 is connected with the rotating shaft 17 fixed on, the change of the rotating direction of the motor 11 is realized, the thickness of the backing plate 15 is suitable for enabling the conical driven change gear 13 to be just meshed with the conical driving change gear 12 fixed on the motor 11, the head end of the rigid connecting rod 14 is hinged to a hinge point 20 deviated from the center of the conical driven change gear 13, the tail end of the rigid connecting rod 14 penetrates through a rotatable sleeve 18 fixed on the backing plate 15 to extend out, the length of the rigid connecting rod 14 is suitable for being just hit on the front side plate 6 of the loading box body 2 when the hinge point 20 rotates to the outermost side, and the tail end of the rigid connecting rod 14 is hit on the front side plate 6 of the rectangular frame body to generate vibration waves.
A vibration wave excitation method for influencing the bearing deformation of filling materials comprises the following steps:
fixing a loading box body 2 and a vibration wave generating device 3 on corresponding positions of a metal base 5, loading prepared bulk gangue samples into the loading box body 2 in 3-6 layers, and prepressing each layer of sample by using an iron hammer;
placing the loading box body 2 with the sample on a test bed of an electro-hydraulic servo universal testing machine 4, starting the electro-hydraulic servo universal testing machine 4 to axially load the loading box body 2 with the sample, and testing the bearing performance evolution law of the bulk gangue;
meanwhile, the motor 11 is started to drive the conical driven change gear 13 through the conical driving change gear 12, the conical driven change gear 13 drives the rigid connecting rod 14 to perform piston movement in the sleeve 18, and the tail end of the rigid connecting rod 14 strikes the loading box body 2 in the piston movement, so that continuous vibration waves can be generated.
The rotating speed of the motor 11 is controlled by regulating and controlling a variable-frequency speed regulator 19 on the motor 11, so that the frequency generated by the shock wave can be changed.
When testing, at first fix loading box 2 and shock wave generating device 3 on 5 corresponding positions of metal base, pack into loading box 2 in 3~6 layers with the bulk waste rock sample that prepare, every layer is adorned the back, uses the hammer to carry out the pre-compaction to the sample, makes the bulk filling material density of whole loading box more even, and is accomplished all layering and loads to finish. Then, the loading box body 2 with the sample is placed on a test table of an electro-hydraulic servo universal testing machine 4, the electro-hydraulic servo universal testing machine (4) is started to carry out axial loading on the loading box body (2) with the sample, and therefore the evolution law of the bearing performance of the bulk waste rock is tested. Meanwhile, the motor 11 is started to drive the conical driven change gear 13 through the conical driving change gear 12, the conical driven change gear 13 drives the rigid connecting rod 14 to perform piston movement in the sleeve 18, and the tail end of the rigid connecting rod 14 strikes the loading box body 2 in the piston movement, so that continuous vibration waves can be generated. The rotating speed of the motor can be controlled by regulating and controlling a variable-frequency speed regulator 19 on the motor 11, so that the frequency generated by the vibration wave can be changed, and the mine earthquake under different geological conditions can be simulated.
Claims (3)
1. A kind of adopt and influence the filling material and bear the weight of the vibration wave excitation unit that deforms, characterized by: the device comprises an axial loading device (1), a loading box body (2) and a vibration wave generating device (3), wherein the loading box body (2) and the vibration wave generating device (3) are respectively fixed on a rectangular metal base (5);
the axial loading device (1) is an electro-hydraulic servo universal testing machine (4), the loading box body (2) is placed on the electro-hydraulic servo universal testing machine (4), and axial loading is carried out through the electro-hydraulic servo universal testing machine (4);
the loading box body (2) comprises a rectangular frame body which is arranged on a metal base (5) and is surrounded by a front side plate (6), a rear side plate (7), a left side plate (8) and a right side plate (9), the front side plate (6), the rear side plate (7), the left side plate (8) and the right side plate (9) are fixedly connected through a plurality of bolts (10),
the shock wave generating device (3) is arranged on the metal base (5) and is adjacent to the loading box body (2), the shock wave generating device comprises a motor (11), a conical driving change gear (12), a conical driven change gear (13), a rigid connecting rod (14) and a backing plate (15), wherein the motor (11) is fixed on the metal base (5) through bolts, a variable frequency speed regulator (19) is connected onto the motor (11), the outer end of a rotating shaft of the motor (11) is fixedly connected with the conical driving change gear (12), the backing plate (15) is arranged on the metal base (5) between the motor (11) and a front side plate (6) of the loading box body (2), the backing plate (15) is provided with the conical driven change gear (13) and a sleeve (18) which are matched with the conical driving change gear (12), and the thickness of the backing plate (15) enables the conical driven change gear (13) to be just meshed with the conical driving change gear (12) fixed on the motor (11), the head end of the rigid connecting rod (14) is hinged to a hinge point (20) of the conical driven change gear (13) deviating from the center, the tail end of the rigid connecting rod (14) penetrates through a rotatable sleeve (18) fixed on the base plate (15) to extend out, the length of the rigid connecting rod (14) is just hit on a front side plate (6) of the loading box body (2) when the hinge point (20) rotates to the outermost side, and the tail end of the rigid connecting rod (14) is hit on the front side plate (6) of the rectangular frame body to generate shock waves.
2. The seismic wave excitation device for mining-effect fill material bearing deformation of claim 1, wherein: the motor (11) adopts a variable-frequency speed-regulating motor, and the change of the vibration frequency of the filling material is realized by regulating and controlling the rotating speed of the motor.
3. A method of excitation using a seismic wave excitation device for inducing a deformation in a load of a filler material according to claim 1, comprising the steps of:
fixing a loading box body (2) and a vibration wave generating device (3) on corresponding positions of a metal base (5), loading prepared bulk gangue samples into the loading box body (2) in 3-6 layers, and prepressing each layer of sample by using an iron hammer;
placing the loading box body (2) with the sample on a test table of an electro-hydraulic servo universal testing machine (4), starting the electro-hydraulic servo universal testing machine (4) to axially load the loading box body (2) with the sample, and testing the bearing performance evolution law of the bulk gangue;
meanwhile, a motor (11) is started to drive a conical driven change gear (13) through a conical driving change gear (12), the conical driven change gear (13) drives a rigid connecting rod (14) to do piston motion in a sleeve (18), and the tail end of the rigid connecting rod (14) is knocked on a loading box body (2) in the piston motion, so that continuous vibration waves can be generated;
the rotating speed of the motor (11) is controlled by regulating and controlling a variable-frequency speed regulator (19) on the motor (11), so that the frequency generated by the shock wave can be changed.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202191280U (en) * | 2011-08-31 | 2012-04-18 | 吉林大学 | Vibration load experimental device |
| CN109060646A (en) * | 2018-09-03 | 2018-12-21 | 山东大学 | Micromachine shaketalle test device and method suitable for weak Sand Liquefaction Analysis |
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| JP2002131205A (en) * | 2000-10-27 | 2002-05-09 | National Maritime Research Institute | Repeated impact tester |
| PL1893972T3 (en) * | 2005-02-22 | 2017-10-31 | Hatch Ltd | Systems, methods and apparatus for non-disruptive and non-destructive inspection of metallurgical furnaces and similar vessels |
| CN107748204B (en) * | 2017-11-17 | 2023-06-23 | 山东科技大学 | Single-particle coal gangue impact vibration test device and application thereof |
| CN108732043B (en) * | 2018-05-03 | 2024-01-30 | 山东科技大学 | Deep rock mass creep impact test device capable of simulating impact disturbance |
| CN108593454B (en) * | 2018-07-13 | 2024-01-09 | 湖南科技大学 | Device and method for testing mud burst of filling pressure-bearing karst cave under impact disturbance |
| CN109142074A (en) * | 2018-09-13 | 2019-01-04 | 中国矿业大学 | A kind of multidirectional load test system of granular media filler |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN202191280U (en) * | 2011-08-31 | 2012-04-18 | 吉林大学 | Vibration load experimental device |
| CN109060646A (en) * | 2018-09-03 | 2018-12-21 | 山东大学 | Micromachine shaketalle test device and method suitable for weak Sand Liquefaction Analysis |
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