CN114813402B - A true triaxial impact loading device - Google Patents
A true triaxial impact loading device Download PDFInfo
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- CN114813402B CN114813402B CN202210397870.1A CN202210397870A CN114813402B CN 114813402 B CN114813402 B CN 114813402B CN 202210397870 A CN202210397870 A CN 202210397870A CN 114813402 B CN114813402 B CN 114813402B
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- 238000012360 testing method Methods 0.000 claims abstract description 57
- 238000004146 energy storage Methods 0.000 claims abstract description 51
- 230000007704 transition Effects 0.000 claims abstract description 26
- 230000003068 static effect Effects 0.000 claims abstract description 23
- 238000006073 displacement reaction Methods 0.000 claims description 25
- 238000013016 damping Methods 0.000 claims description 12
- 230000006835 compression Effects 0.000 claims description 11
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- 238000000034 method Methods 0.000 claims description 6
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- 230000005489 elastic deformation Effects 0.000 claims description 3
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- 230000035939 shock Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 23
- 239000003245 coal Substances 0.000 abstract description 14
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 238000005065 mining Methods 0.000 description 9
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/30—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight
- G01N3/307—Investigating strength properties of solid materials by application of mechanical stress by applying a single impulsive force, e.g. by falling weight generated by a compressed or tensile-stressed spring; generated by pneumatic or hydraulic means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0001—Type of application of the stress
- G01N2203/001—Impulsive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0032—Generation of the force using mechanical means
- G01N2203/0035—Spring
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- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
本发明公开了一种真三轴冲击加载装置，涉及岩石压裂试验设备技术领域。包括框架，框架下部设有真三轴加载装置，上部设有冲击加载装置，顶部安装有顶板；真三轴加载装置包括底座、加载油缸、空心油缸、过渡重锤和第二横梁，底座设置于所述框架底部，试件放置于所述底座上，冲击加载装置包括立柱、第一横梁、伸缩柱、蓄能弹簧、蓄能控制油缸、第一电磁体、第二电磁铁、重锤和升降油缸。本发明提供的真三轴冲击加载装置，通过设置真三轴加载装置和冲击加载装置分别对试件施加静载和冲击载荷，实现了对同一煤岩体进行动态与静态同步加载的试验目的，具有灵活控制、操作方便等优点。
The present invention discloses a true triaxial impact loading device, which relates to the technical field of rock fracturing test equipment. It comprises a frame, a true triaxial loading device is provided at the lower part of the frame, an impact loading device is provided at the upper part, and a top plate is installed at the top; the true triaxial loading device comprises a base, a loading cylinder, a hollow cylinder, a transition weight and a second cross beam, the base is arranged at the bottom of the frame, the test piece is placed on the base, and the impact loading device comprises a column, a first cross beam, a telescopic column, an energy storage spring, an energy storage control cylinder, a first electromagnet, a second electromagnet, a weight and a lifting cylinder. The true triaxial impact loading device provided by the present invention realizes the test purpose of dynamic and static synchronous loading of the same coal rock mass by arranging a true triaxial loading device and an impact loading device to apply a static load and an impact load to the test piece respectively, and has the advantages of flexible control and convenient operation.
Description
Technical Field
The invention relates to the technical field of rock fracturing test equipment, in particular to a true triaxial impact loading device.
Background
With the decrease of shallow coal resources, the mining depth of mines is continuously increased, most of mines enter deep mining states, and the mining depth of some mines exceeds 1500m. In deep mining, rock mass is in a complex mechanical environment of 'three high and one disturbance', the mine pressure law is obviously different from that of shallow part, and coal rock dynamic disasters represented by rock burst bring new challenges to mine safety mining. The frequency and intensity of impact mining pressure under deep mining conditions are far higher than those of shallow mining, and the casualties and economic losses caused by the deep mining are also characterized by serious and malignant accidents, so that people must pay attention to and pay attention to the characteristics.
At present, a laboratory mainly performs tests on a dynamic mechanical testing machine, and an MTS material mechanical testing machine is generally used in static mechanical tests, and can complete static tests, normal temperature and pressure tests, high temperature and pressure tests, damage mechanical tests and the like. Drop hammer, light air cannon and Hopkins compression bar are developed successively in the aspect of dynamic load experimental equipment. However, the single static load or dynamic load experiment can be carried out, and in reality, the rock burst is mostly caused by the combined action of the dynamic load and the static load, so that the coal rock mass is unstable and damaged. Therefore, research on a true triaxial impact loading device is needed to simulate the stress environment characteristics and the evolution process when coal and rock dynamic disasters occur, and a basis is provided for researching rock burst mechanism.
Disclosure of Invention
The invention mainly aims to provide a true triaxial impact loading device so as to solve the problem that only an impact loading device and a true triaxial loading device which are independently used exist at present.
In order to solve the technical problems, the invention adopts the following technical scheme:
The true triaxial impact loading device comprises a frame, wherein the lower part of the frame is provided with the true triaxial loading device, the upper part of the frame is provided with the impact loading device, and the top of the frame is provided with a top plate;
The true triaxial loading device comprises a base, a loading oil cylinder, a hollow oil cylinder, a transition heavy hammer and a second cross beam, wherein the base is arranged at the bottom of the frame, a test piece is placed on the base, the loading oil cylinder is arranged on the inner wall of the frame, a first pressure head is arranged at the end part of the loading oil cylinder and is positioned around the test piece, the bottom of the hollow oil cylinder is positioned above the test piece, the top of the hollow oil cylinder is arranged at the bottom of the second cross beam, the second cross beam is arranged on the inner wall of the frame, an opening is formed in the middle part of the second cross beam, the transition heavy hammer is arranged inside the hollow oil cylinder, the top of the transition heavy hammer penetrates through the opening of the second cross beam, and the bottom of the transition heavy hammer is provided with a second pressure head;
The impact loading device comprises a stand column, a first cross beam, a telescopic column, an energy storage spring, an energy storage control oil cylinder, a first electromagnet, a second electromagnet, a heavy hammer and a lifting oil cylinder, wherein the stand column is arranged between the top plate and the second cross beam, the first cross beam is arranged on the stand column in a sliding mode, the telescopic column is arranged between the top plate and the first cross beam, the energy storage spring is sleeved on the telescopic column, the energy storage control oil cylinder is arranged at the bottom of the top plate, the first electromagnet is arranged at the bottom of the energy storage control oil cylinder, the second electromagnet is arranged at the top of the first cross beam and corresponds to the first electromagnet, the heavy hammer is arranged at the bottom of the first cross beam, a third pressure head is arranged at the end of the heavy hammer, and the lifting oil cylinder is arranged at the top of the second cross beam.
Further, the device also comprises a monitoring system, wherein the monitoring system comprises a load sensor, a displacement sensor and a load and displacement integrated sensor, the load sensor is arranged between the heavy hammer and the third pressure head, the displacement sensor is arranged between the first cross beam and the second electromagnet, and the load and displacement integrated sensor is arranged between the loading oil cylinder and the first pressure head, and between the transition heavy hammer and the second pressure head.
Furthermore, the number of the upright posts, the energy storage control oil cylinders and the lifting oil cylinders is two, the energy storage control oil cylinders and the lifting oil cylinders are positioned on the inner sides of the two upright posts, the telescopic columns are positioned on the middle positions of the inner sides of the two energy storage control oil cylinders, and the heavy hammer is positioned on the middle positions of the inner sides of the two lifting oil cylinders.
Further, the lower part of the upright post is sleeved with a damping spring, the top of the damping spring is provided with a protection pad, and the bottom of the damping spring is contacted with the second cross beam.
Further, the distance between the upper end surface of the protective pad and the second cross beam is larger than the maximum impact displacement of the first cross beam.
Further, the device also comprises a control system, wherein the monitoring system, the energy storage control oil cylinder, the loading oil cylinder, the first electromagnet, the second electromagnet and the lifting oil cylinder are all connected with the control system.
A test method of a true triaxial impact loading device comprises the following steps:
S1, determining compression deformation of the energy storage spring according to the stiffness coefficient of the energy storage spring and the designed elastic energy value, determining the stroke of the energy storage control oil cylinder and the lifting oil cylinder through the compression deformation,
S2, starting the lifting oil cylinder to lift the height of the first cross beam, compressing the energy storage spring to deform the energy storage spring to obtain elastic deformation energy, connecting the first electromagnet and the second electromagnet to ensure that the second electromagnet on the first cross beam is connected with the first electromagnet at the bottom of the top plate, fixing the first cross beam, obtaining the compression deformation of the energy storage spring through the displacement sensor, then restoring the lifting oil cylinder to the initial position,
S3, placing a test piece, placing the test piece on a base, applying static load to the test piece in the horizontal direction through four loading cylinders, recording data of monitoring displacement and load by a load displacement integrated sensor, simultaneously controlling a transition heavy hammer to apply static load to the upper surface of the test piece through a hollow cylinder,
S4, after the loading oil cylinder loads the test piece to the set load, the first electromagnet and the second electromagnet are powered off, at the moment, the first beam moves downwards, the first beam drives the heavy hammer to apply impact to the transition heavy hammer, the transition heavy hammer applies impact to the test piece, the test piece is damaged by the impact,
And S5, stopping loading the loading oil cylinder, releasing pressure of the test piece, storing the monitored data, and processing the collected data to obtain the size of static load and impact load and the damage process of the test piece.
Compared with the prior art, the invention has the following beneficial effects:
By arranging the true triaxial loading device and the impact loading device to apply static load and impact load to the test piece respectively, static load and dynamic load experiments are completed simultaneously, the test purpose of carrying out dynamic and static synchronous loading on the same coal rock mass is achieved, the dynamic and static synchronous loading device has the advantages of flexible control, convenience in operation and the like, and stress environment characteristics and evolution processes can be better simulated when coal rock dynamic disasters occur, so that a basis is provided for researching rock burst mechanism.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention.
FIG. 2 is a horizontal cross-sectional view of a true triaxial loading apparatus according to the present invention.
The hydraulic pressure energy-saving device comprises a 1-energy-saving spring, a 2-energy-saving control oil cylinder, a 3-first electromagnet, a 4-heavy hammer, a 5-third pressure head, a 6-load sensor, a 7-lifting oil cylinder, an 8-transition heavy hammer, a 9-test piece, a 10-base, an 11-telescopic column, a 12-frame, a 13-upright post, a 14-displacement sensor, a 15-first cross beam, a 16-protection pad, a 17-damping spring, a 18-second cross beam, a 19-hollow oil cylinder, a 20-load displacement integrated sensor, a 21-loading oil cylinder and a 22-second pressure head.
Detailed Description
The technical scheme of the invention is further described below through the attached drawings and the embodiments.
Example 1
Referring to fig. 1 to 2, the present invention provides a true triaxial impact loading device, which comprises a frame 12, wherein the lower part of the frame 12 is provided with the true triaxial loading device, the upper part is provided with the impact loading device, and the top is provided with a top plate;
The true triaxial loading device comprises a base 10, a loading oil cylinder 21, a hollow oil cylinder 19, a transition heavy hammer 8 and a second cross beam 18, wherein the base 10 is arranged at the bottom of a frame 12, a test piece 9 is arranged on the base 10, the loading oil cylinder 21 is arranged on the inner wall of the frame 12, a first pressure head is arranged at the end part and is positioned around the test piece 9, the bottom of the hollow oil cylinder 19 is positioned above the test piece 9, the top of the hollow oil cylinder 19 is arranged at the bottom of the second cross beam 18, the second cross beam 18 is arranged on the inner wall of the frame 12, an opening is formed in the middle of the second cross beam 18, the transition heavy hammer 8 is arranged inside the hollow oil cylinder, the top of the transition heavy hammer 8 penetrates through the opening of the second cross beam 18, a second pressure head 22 is arranged at the bottom of the transition heavy hammer 8, in this embodiment, the number of the loading oil cylinders 21 is four, static loads are applied to four surfaces of the test piece 9 in the horizontal direction by the loading oil cylinder 21, and static loads are applied to the surfaces of the top of the test piece 9 by the hollow oil cylinder 19. The true triaxial loading device can simulate the true stress state of rock underground storage. Because the actual engineering rock mass has a complex stress state in the underground, great difference exists among three main stresses, the true triaxial loading device can better restore the true stress state of underground coal rock, can realize the application of main stresses and impact disturbance in different directions to the coal rock, and is beneficial to better researching the stress damage rule of the coal rock in the true geographic environment.
The impact loading device comprises a vertical column 13, a first cross beam 15, a telescopic column 11, an energy storage spring 1, an energy storage control oil cylinder 2, a first electromagnet 3, a second electromagnet, a heavy hammer 4 and a lifting oil cylinder 7, wherein the vertical column 13 is arranged between a top plate and the second cross beam 18, the first cross beam 15 is arranged on the vertical column 13 in a sliding mode, the telescopic column 11 is arranged between the top plate and the first cross beam 15, the energy storage spring 1 is sleeved on the telescopic column 11, the energy storage control oil cylinder 2 is arranged at the bottom of the top plate, the first electromagnet 3 is arranged at the bottom of the energy storage control oil cylinder 2, the second electromagnet is arranged at the top of the first cross beam 15 and corresponds to the first electromagnet 3, the heavy hammer 4 is arranged at the bottom of the first cross beam 15, a third pressure head 5 is arranged at the end part of the heavy hammer 4, and the lifting oil cylinder 7 is arranged at the top of the second cross beam 18. In this embodiment, the impact loading device can apply a dynamic load to the test piece 9, when in use, the lifting cylinder 7 lifts to enable the first beam 15 to move upwards, the energy storage spring 1 on the telescopic column 11 is compressed until the second electromagnet on the first beam 15 is in suction connection with the first electromagnet 3 at the bottom of the energy storage control cylinder 2, so that the first beam 15 is fixedly connected to the top plate, then the lifting cylinder 7 retracts to descend to an initial position, when the dynamic load needs to be applied to the test piece 9, the second electromagnet and the first electromagnet 3 are powered off, so that the first beam 15 is disconnected from the top plate, at the moment, the first beam 15 moves downwards rapidly, the weight 4 at the top of the first beam 15 applies an impact to the transition weight 8, and the transition weight 8 applies an impact to the test piece, so as to complete the application of the dynamic load.
The coal rock under the mine is not only subjected to the pressure of an upper roof, but also subjected to the disturbance effects of roof fracture, manual blasting and the like at different degrees, and the damage characteristics of the coal rock under dynamic and static combined loading are required to be researched. The impact loading device is designed, impact disturbance is applied to the coal rock on the basis of static load loading, the damage characteristics of the coal rock under combined loading are explored by using a test method, and data support is provided for preventing rock burst.
Preferably, the device further comprises a monitoring system and a control system, wherein the monitoring system comprises a load sensor 6, a displacement sensor 14 and a load and displacement integrated sensor 20, the load sensor 6 is arranged between the heavy hammer 4 and the third pressure head 5 and is used for measuring dynamic load applied by the heavy hammer 4, the displacement sensor 14 is arranged between the first cross beam 15 and the second electromagnet and is used for measuring compression deformation of the energy storage spring 1, and the load and displacement integrated sensor 20 is arranged between the loading oil cylinder 21 and the first pressure head, between the transition heavy hammer 8 and the second pressure head 22 and is used for measuring load and displacement. In this embodiment, the monitoring system, the energy storage control cylinder 2, the loading cylinder 21, the first electromagnet, the second electromagnet and the lifting cylinder 7 are all connected with the control system, the control system is a controller, and the control system stores and processes the data transmitted by the monitoring system and performs opening and closing control on the energy storage control cylinder 2, the loading cylinder 21, the first electromagnet, the second electromagnet and the lifting cylinder 7.
Preferably, the number of the upright posts 13, the energy storage control oil cylinders 2 and the lifting oil cylinders 7 is two, the energy storage control oil cylinders 2 and the lifting oil cylinders 7 are positioned on the inner sides of the two upright posts 13, the telescopic posts 11 are positioned on the middle positions of the inner sides of the two energy storage control oil cylinders 2, and the heavy weights 4 are positioned on the middle positions of the inner sides of the two lifting oil cylinders 7.
Preferably, a damping spring 17 is sleeved on the lower portion of the upright post 13, a protection pad 16 is arranged on the top of the damping spring 17, and the bottom of the damping spring is in contact with the second cross beam 18. The damping spring 17 can play a role in buffering and weight reduction of the suddenly-descending first cross beam 15, and the protection pad 16 can play a role in protecting the damping spring 17.
Preferably, the distance between the upper end surface of the protective pad 16 and the second beam 18 is greater than the maximum impact displacement of the first beam 15.
Example 2
A test method of a true triaxial impact loading device comprises the following steps:
S1, determining the compression deformation of the energy storage spring 1 according to the stiffness coefficient of the energy storage spring 1 and the designed elastic energy value, determining the strokes of the energy storage control cylinder 2 and the lifting cylinder 7 through the compression deformation,
S2, starting the lifting cylinder 7 to lift the height of the first cross beam 15, compressing the energy storage spring 1 to deform the energy storage spring to obtain elastic deformation energy, switching on the first electromagnet and the second electromagnet to enable the second electromagnet on the first cross beam 15 to be connected with the first electromagnet at the bottom of the top plate, fixing the first cross beam 15, obtaining the compression deformation of the energy storage spring 1 through the displacement sensor 14, then restoring the lifting cylinder 7 to the initial position,
S3, placing a test piece, placing the test piece on the base 10, applying static load to the test piece in the horizontal direction through four loading cylinders 21, recording data of monitoring displacement and load by the load-displacement integrated sensor 20, simultaneously controlling the transition heavy hammer 8 to apply static load to the upper surface of the test piece through the hollow cylinder 19,
S4, after the loading oil cylinder 21 loads the test piece to the set load, the first electromagnet and the second electromagnet are powered off, at the moment, the first cross beam 15 moves downwards, the first cross beam 15 drives the heavy hammer 4 to apply impact to the transition heavy hammer 8, the transition heavy hammer 8 applies impact to the test piece, the test piece is damaged by the impact,
And S5, stopping loading the loading oil cylinder 21, releasing pressure of the test piece, storing the monitored data, and processing the collected data to obtain the static load and impact load of the test piece and the damage process.
The foregoing description is only of the preferred embodiments of the present invention and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiments according to the technical principles of the present invention still fall within the scope of the technical solutions of the present invention.
Claims (6)
1. The true triaxial impact loading device is characterized by comprising a frame, wherein the lower part of the frame is provided with the true triaxial loading device, the upper part of the frame is provided with the impact loading device, and the top of the frame is provided with a top plate;
The true triaxial loading device comprises a base, a loading oil cylinder, a hollow oil cylinder, a transition heavy hammer and a second cross beam, wherein the base is arranged at the bottom of the frame, a test piece is placed on the base, the loading oil cylinder is arranged on the inner wall of the frame, a first pressure head is arranged at the end part of the loading oil cylinder and is positioned around the test piece, the bottom of the hollow oil cylinder is positioned above the test piece, the top of the hollow oil cylinder is arranged at the bottom of the second cross beam, the second cross beam is arranged on the inner wall of the frame, an opening is formed in the middle part of the second cross beam, the transition heavy hammer is arranged inside the hollow oil cylinder, the top of the transition heavy hammer penetrates through the opening of the second cross beam, and the bottom of the transition heavy hammer is provided with a second pressure head;
The impact loading device comprises a stand column, a first cross beam, a telescopic column, an energy storage spring, an energy storage control oil cylinder, a first electromagnet, a second electromagnet, a heavy hammer and a lifting oil cylinder, wherein the stand column is arranged between the top plate and the second cross beam, the first cross beam is arranged on the stand column in a sliding mode, the telescopic column is arranged between the top plate and the first cross beam, the energy storage spring is sleeved on the telescopic column, the energy storage control oil cylinder is arranged at the bottom of the top plate, the first electromagnet is arranged at the bottom of the energy storage control oil cylinder, the second electromagnet is arranged at the top of the first cross beam and corresponds to the first electromagnet, the heavy hammer is arranged at the bottom of the first cross beam, a third pressure head is arranged at the end of the heavy hammer, and the lifting oil cylinder is arranged at the top of the second cross beam;
The device comprises a heavy hammer, a third pressure head, a first cross beam, a second electromagnet, a load and displacement sensor, a first pressure head, a second pressure head, a load and displacement sensor, a second pressure head, a first pressure head, a second pressure head, a third pressure head, a first transverse beam, a second transverse beam, a first pressure head, a second pressure head, a first pressure head, a second pressure head, a third pressure head, a second pressure head and a third pressure head.
2. The true triaxial impact loading device according to claim 1, wherein the number of the upright posts, the energy storage control cylinders and the lifting cylinders is two, the energy storage control cylinders and the lifting cylinders are located on the inner sides of the two upright posts, the telescopic posts are located on the middle positions of the inner sides of the two energy storage control cylinders, and the heavy hammer is located on the middle positions of the inner sides of the two lifting cylinders.
3. The true triaxial impact loading device according to claim 1, wherein a damping spring is sleeved on the lower portion of the upright, a protection pad is arranged on the top of the damping spring, and the bottom of the damping spring is in contact with the second cross beam.
4. A true triaxial impact loading apparatus according to claim 3, wherein the distance between the upper end face of the protective pad and the second cross member is greater than the maximum impact displacement of the first cross member.
5. The true triaxial shock loading device of claim 1, further comprising a control system, wherein the monitoring system, the energy storage control cylinder, the loading cylinder, the first electromagnet, the second electromagnet, and the lift cylinder are all connected to the control system.
6. A method of testing a true triaxial impact loading apparatus according to claim 1, comprising the steps of:
S1, determining compression deformation of the energy storage spring according to the stiffness coefficient of the energy storage spring and the designed elastic energy value, determining the stroke of the energy storage control oil cylinder and the lifting oil cylinder through the compression deformation,
S2, starting the lifting oil cylinder to lift the height of the first cross beam, compressing the energy storage spring to deform the energy storage spring to obtain elastic deformation energy, connecting the first electromagnet and the second electromagnet to ensure that the second electromagnet on the first cross beam is connected with the first electromagnet at the bottom of the top plate, fixing the first cross beam, obtaining the compression deformation of the energy storage spring through the displacement sensor, then restoring the lifting oil cylinder to the initial position,
S3, placing a test piece, placing the test piece on a base, applying static load to the test piece in the horizontal direction through four loading cylinders, recording data of monitoring displacement and load by a load displacement integrated sensor, simultaneously controlling a transition heavy hammer to apply static load to the upper surface of the test piece through a hollow cylinder,
S4, after the loading oil cylinder loads the test piece to the set load, the first electromagnet and the second electromagnet are powered off, at the moment, the first beam moves downwards, the first beam drives the heavy hammer to apply impact to the transition heavy hammer, the transition heavy hammer applies impact to the test piece, the test piece is damaged by the impact,
And S5, stopping loading the loading oil cylinder, releasing pressure of the test piece, storing the monitored data, and processing the collected data to obtain the size of static load and impact load and the damage process of the test piece.
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| CN202210397870.1A CN114813402B (en) | 2022-04-16 | 2022-04-16 | A true triaxial impact loading device |
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| CN202210397870.1A CN114813402B (en) | 2022-04-16 | 2022-04-16 | A true triaxial impact loading device |
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| CN114813402B true CN114813402B (en) | 2025-03-18 |
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| CN116678749A (en) * | 2023-04-20 | 2023-09-01 | 辽宁大学 | A device and method for splitting rock after a true triaxial hydraulic fracturing experiment |
| CN116952753A (en) * | 2023-04-25 | 2023-10-27 | 安徽理工大学 | Single-sided visual true triaxial rock sample continuous impact test device and test method |
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| CN202101910U (en) * | 2011-06-10 | 2012-01-04 | 中国矿业大学 | Triaxial impact dynamic load and dead load combined tester |
| CN110031321A (en) * | 2019-04-12 | 2019-07-19 | 山东科技大学 | A kind of sound carries superposing type rock mechanics experiment machine and test method |
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| CN202101910U (en) * | 2011-06-10 | 2012-01-04 | 中国矿业大学 | Triaxial impact dynamic load and dead load combined tester |
| CN110031321A (en) * | 2019-04-12 | 2019-07-19 | 山东科技大学 | A kind of sound carries superposing type rock mechanics experiment machine and test method |
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