CN205317604U - A blast load simulative generator for simulating deep rock mass stress - Google Patents
A blast load simulative generator for simulating deep rock mass stress Download PDFInfo
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- CN205317604U CN205317604U CN201620025362.0U CN201620025362U CN205317604U CN 205317604 U CN205317604 U CN 205317604U CN 201620025362 U CN201620025362 U CN 201620025362U CN 205317604 U CN205317604 U CN 205317604U
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- unloading
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- blast load
- simulative generator
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Abstract
The utility model relates to a blast load simulative generator for simulating deep rock mass stress, locate roof or the curb plate that bears the frame on, blast load simulative generator includes loading unit and uninstallation unit, the loading unit includes piston and the hydro -cylinder that is equipped with the air inlet with unload the gas port, the piston slides and sets up in the hydro -cylinder, the uninstallation unit includes that the lateral wall is equipped with the cylinder in uninstallation hole, uninstallation piston and regulating spring, cylinder one end with unload gas port butt joint, the uninstallation piston is located in the cylinder with sliding to the other end through regulating spring and cylinder meets, and all side seals of uninstallation piston are stifled when regulating spring is in free state uninstallation hole beneficial effect: the disturbance of explosion impact process to deep rock mass and excavation tunnel has been simulated effectively to the accuracy.
Description
Technical field
The present invention relates to the analog of stress, particularly relate to a kind of blast load simulative generator for simulating deep rock mass stress.
Background technology
The problem that the traffic of current China, water conservancy and hydropower, the energy, mine and military protection all relate to deep underground engineering, and deep rock mass is composed and is existed in high stress environment, under construction and excavation off-load disturbance and explosion seism perturbation action, exist it may happen that the risk of the disasters such as subregion breaks, large deformation, rock burst, engineering earthquake. Therefore for taking precautions against the generation of above-mentioned disaster, deep rock mass engineering project is being furtherd investigate by relevant scholar expert both at home and abroad, simulates deep rock mass stress. But current simulation is only limitted to high-ground stress simulation, the simulation of summary or high-ground stress and excavation disturbance, has no the analog that can all realize high-ground stress, excavation disturbance and blast disturbance (high two disturbances).
After shallow embedding or underground explosion, blast load is propagated to blast far field through rock soil medium, and after constantly decay, the blast load peak value that deep ground bears is substantially reduced, and load is also greatly increased action time. In recent years, the similar materials based on the theory of similarity is frequently used to the true rock mass structure of simulation, provides possibility for the experiment extensive underground explosion of lab simulation. After similar scale contracting ratio, blast load intensity reduces further, what can be similar to is equivalent to triangular pulse, as exploded the explosion seism disturbance produced in 0 ~ 2000m depths, underground according to guide simulation study 0 ~ 100ktTNT equivalent of 1:100, required simulation load is: peak value 0 ~ 3MPa, rise time 2.5 ~ 10ms, fall time are 2 times of 5 ~ 20ms of rise time. The feature of this equivalent load is that peak value is low, pulsewidth is long, uses chemical explosion method to be difficult to accurate acquisition. In indoor use chemical explosion, there is bigger danger simultaneously, be therefore badly in need of exploring safe and reliable blast load analog.
Summary of the invention
It is an object of the invention to provide a kind of a kind of charger simulating deep rock mass stress that can realize high-ground stress, excavation disturbance and blast disturbance simulation.
For achieving the above object, the blast load simulative generator for simulating deep rock mass stress of the present invention, it to be located on rock mass stress test carrier, described blast load simulative generator includes loading unit and unloading unit; Loading unit includes piston and is provided with air inlet and unloads the oil cylinder of QI KOU, and described piston is slidably arranged in oil cylinder; Described unloading unit includes sidewall and is provided with the cylinder barrel of unloading port, unloading piston and regulates spring, described cylinder barrel one end is docked with unloading QI KOU, described unloading piston is located in cylinder barrel slidably, and connect with the other end of cylinder barrel by regulating spring, when regulating spring and being in free state, all side seals of unloading piston block up described unloading port; Loading unit is by injecting pressure-air to air inlet, promote piston press fluid, unloading unit is when oil cylinder internal gas pressure raises, open unloading port by the unloading piston pushed by gases at high pressure and form path discharge gas, when air pressure reduces, unloading piston resets under the effect regulating spring and blocks unloading port, and described blast load simulative generator is arranged on top board or the side plate of described carrier.
The design further of described blast load simulative generator is in that, described loading unit also includes nut, the piston rod of described piston stretches out the described nut that spins outside described oil cylinder, making between the stroke limiting of the piston spacing between nut and oil cylinder, the piston end of described oil cylinder connects with the connecting hole on described top board or side plate.
The design further of described blast load simulative generator is in that, also described unloading unit also includes a positioning sleeve, described cylinder barrel is sequentially provided with the regulating piston chamber being interconnected vertically, unloading plunger shaft and location mantle cavity, and unloading plunger shaft is provided with unloading port, what the opening in described regulating piston chamber was connected to described oil cylinder unloads in QI KOU, regulating piston, unloading piston and positioning sleeve are respectively correspondingly placed in regulating piston chamber, in unloading plunger shaft and location mantle cavity, and the piston rod of regulating piston extend into unloading plunger shaft and is connected with unloading piston, regulate spring and be set on the piston rod of unloading piston, and unloading piston is pressed to the intercommunicating pore between regulating piston chamber and unloading plunger shaft, the piston rod that unloading piston connects extend in the mantle cavity of location, it is connected with the positioning sleeve in this chamber.
The design further of described blast load simulative generator is in that, also include a positioning unit for positioning positioning sleeve, positioning unit includes alignment pin and location spring, the cavity wall of location mantle cavity is provided with pin hole, alignment pin is placed in pin hole, location spring is set on alignment pin, and alignment pin one side pressure is touched on positioning sleeve excircle side, when unloading piston driving positioning sleeve and move axially and making hole, location move to alignment pin position, alignment pin embeds in this hole, location, and makes unloading piston axially position.
The design further of described blast load simulative generator is in that, described cylinder barrel is made up of interconnective first cylinder barrel and the second cylinder barrel.
The design further of described blast load simulative generator is in that, the inner chamber of described first cylinder barrel is provided with the described regulating piston chamber being interconnected and the first unloading plunger shaft vertically, and described unloading port is arranged in the cavity wall of the first unloading plunger shaft.
The design further of described blast load simulative generator is in that, the inner chamber of described second cylinder barrel is provided with the second unloading plunger shaft and the described location mantle cavity being interconnected vertically.
The design further of described blast load simulative generator is in that, the corresponding end of the first unloading plunger shaft and the second unloading plunger shaft is threaded connection and makes this two chamber be combined with each other, and forms the described unloading plunger shaft of Guan Bi.
The design further of described blast load simulative generator is in that, described unloading pistons end is provided with taper seat, the hole wall of described intercommunicating pore is provided with the internal conical surface suitable with described taper seat, under the effect regulating spring, the taper seat of unloading pistons end is pressed on the internal conical surface in intercommunicating pore.
The design further of described blast load simulative generator is in that, described top board or side plate include outer panel, interior plate and power transmission thin plate; Described outer panel is provided with connecting hole, described interior plate is provided with reservoir, the bottom land of this reservoir is evenly equipped with some through holes, and described blast load simulative generator is connected on the connecting hole of outer panel, the bottom land end that described power transmission thin plate is sealedly connected on interior plate reservoir; Outer panel is sealedly connected on interior plate, the reservoir on interior plate is covered, to form liquid storage cylinder.
The beneficial effects of the present invention is: produce triangle hydraulic coupling pulse with blast load simulative generator and carry out simulated explosion load, and this hydraulic impulse is outwards transmitted, simulate the disturbance to deep rock mass and tunneling of the blast impulse process accurately and effectively.
Accompanying drawing explanation
Fig. 1 is the structural representation of blast load simulative generator of the present invention.
Fig. 2 is the structural representation of loading unit.
Fig. 3 is the structural representation of unloading unit.
Fig. 4 is the hydraulic impulse schematic diagram that blast load simulative generator produces.
Wherein, loading unit 1, oil cylinder 11, air inlet 111, unload QI KOU 112, piston 12, nut 13, unloading unit 2, cylinder barrel 21, first cylinder barrel 21a, second cylinder barrel 21b, regulating piston chamber 211, unloading plunger shaft 212, first unloading plunger shaft 212a, second unloading plunger shaft 212b, unloading port 2121, location mantle cavity 213, pin hole 2131, intercommunicating pore 219, regulating piston 22, unloading piston 23, regulate spring 24, positioning sleeve 25, alignment pin 26, location spring 27, top board 3, outer panel 31, connecting hole 311, interior plate 32, reservoir 321, through hole 322, power transmission thin plate 33.
Detailed description of the invention
Such as Fig. 1, for the disturbance to deep rock mass of the simulated explosion ground, the present invention is provided with blast load simulative generator. The outside of the top board 3 that this blast load simulative generator is placed, naturally it is also possible to be arranged on outside side plate (not shown). In the present embodiment, top board 3 is designed to an assembly, it is mainly made up of outer panel 31, interior plate 32 and power transmission thin plate 33, connecting hole 311 is arranged on outer panel 31, and reservoir 321 is set on interior plate 32, the bottom land of this reservoir 321 is evenly equipped with some through holes 322, and power transmission thin plate 33 is sealedly connected on the bottom land end of reservoir 321, thus becoming a cavity wall of carrier cavity. Outer panel 31 is sealed on interior plate 32, and both are connected and sealed by securing member. Therefore, the reservoir on interior plate forms described liquid storage cylinder 321 through the capping of outer panel 31.
Further, such as Fig. 2, blast load simulative generator includes loading single 1 and unloading unit 2. Loading unit 1 includes nut 13, piston 12 and is provided with air inlet and unloads the oil cylinder 11 of QI KOU, piston 12 is slidably arranged in oil cylinder 11, and the piston rod of this piston stretches out the described nut 13 that spins outside described oil cylinder, nut 13 is rotatably connected in the position of piston rod and the movement travel direct correlation of piston 12, and the stroke of piston is limited in the spacing between nut and oil cylinder.Two circumferential positions corresponding to oil cylinder 11 piston rod one end are respectively equipped with radially distributed a pair air inlet (not shown in FIG.) and unload QI KOU 112 for a pair, and the piston end of oil cylinder 11 connects with the through hole 322 on outer panel 141.
Such as Fig. 3, unloading unit 2 includes cylinder barrel 21, regulating piston 22, unloading piston 23, regulates spring 24, positioning sleeve 25, alignment pin 26 and location spring 27. Cylinder barrel 21 is sequentially provided with the regulating piston chamber 211, unloading plunger shaft 212 and the location mantle cavity 213 that are interconnected vertically, and is respectively correspondingly provided with unloading port 2121 and pin hole 2131 in the circumferential cavity wall of unloading plunger shaft 212 and location mantle cavity 213. The opening in regulating piston chamber 211 is connected to the unloading in QI KOU 112 of oil cylinder 11. Regulating piston 23, unloading piston 24 and positioning sleeve 25 are respectively correspondingly placed in regulating piston chamber 211, unloading plunger shaft 212 and location mantle cavity 213. And regulating piston, the piston rod of 22 extend into unloading plunger shaft 212 and is connected with unloading piston 23. Regulating spring 24 and be set on the piston rod of unloading piston 23, its one end is conflicted on unloading piston 23, and the other end is conflicted in the cavity wall of unloading plunger shaft 212, and unloading piston 23 is pressed to the intercommunicating pore 219 between regulating piston chamber and unloading plunger shaft. The piston rod of unloading piston extend in the mantle cavity 213 of location. and positioning sleeve 25 is connected on the piston rod of the unloading piston 23 stretched in this chamber. Location spring 27 and alignment pin 26 are placed in pin hole 32131, pin hole 32131 is provided with female thread corresponding to lateral ends, one screw is screwed in the outboard end of pin hole 28, and end pressure touch location spring one end, the other end of location spring 27 pushes alignment pin 26, alignment pin 26 1 side pressure is made to touch on positioning sleeve 25 excircle side, when unloading piston 23 and drive positioning sleeve 25 to move axially and making hole, location 28 move to alignment pin position, alignment pin embeds in this hole, location 28, and makes unloading piston shaft 25 to location.
Above-mentioned blast load simulative generator 3 is connected with air compression station (not shown) by the air inlet 111 on oil cylinder 11, air compression station provides high pressure gas in moment to blast load simulative generator, this high pressure gas is entered in oil cylinder 11 by pipeline by air inlet 111, piston 12 is impacted sharp downward movement by high pressure draught, to move required time for tRiseLAP, around here the liquid in oil cylinder 11 and the liquid storage cylinder 321 that connects with this oil cylinder is formed ever-increasing pressure, until peak value Pf, and the incompressible characteristic of liquid, suffered pressure is reacted on piston 12, piston 12 is made to move upward, and make the air of upper piston area be compressed, air pressure strengthens, when pressure is applied to the pressure on unloading piston 23 more than adjustment spring 24, unloading piston 23 moves right, no longer pressure is touched on intercommunicating pore 219, intercommunicating pore 219 is opened, gases at high pressure release from intercommunicating pore 219, and with the positioning sleeve that unloading piston 23 moves to the right simultaneously, it positions hole when moving to alignment pin position, alignment pin embeds in this hole, location, unloading piston is made to be axially located, intercommunicating pore 219 remains on, gases at high pressure will all release from this intercommunicating pore, the active force of gas is at tDropBeing weakened to zero by peak value Pf in time period, so far one surge pressure of formation is the dynamic triangle hydraulic impulse load of Pf, refers to Fig. 4, in order to simulated explosion Ground shock waves disturbance. This hydraulic impulse load acts on power transmission thin plate 33 by forming the uniform connecting hole 311 of reservoir bottom land of liquid storage cylinder, and the shock wave of this hydraulic impulse load is delivered on test specimen 5 by power transmission thin plate 33.
Such as Fig. 4, the triangle hydraulic impulse load formed by blast load simulative generator, its surge pressure Pf can regulate, and adjustment is to be realized by the movement travel of regulating piston 22, and the adjustment of the trip is realized by the adjusting nut 13 position on the piston rod of piston 12. Nut 33 diverse location on the piston rod, forms the spacing different from oil cylinder casing wall, thus limiting the different motion stroke of piston 12, therefore the adjustment of surge pressure Pf is very easily by the blast load simulative generator in the present invention.
The present invention arranges the bottom land of a uniform through hole 322 at liquid storage cylinder 321, be equivalent to a wave filter, make hydraulic impulse transmit to power transmission thin plate 33 via through hole 322, so that hydraulic impulse is carried out waveform arrangement, be run through uniform through hole and be balancedly applied on power transmission thin plate 33.
In order to make the elastic force scalable regulating spring 24 in above-mentioned unloading unit 2, cylinder barrel 21 makes combination type, this cylinder barrel is by the first cylinder barrel 21 and the second cylinder barrel 22 is threaded vertically is formed, and unloading plunger shaft 212 therein is formed by first and second unloading plunger shaft 212a, the 212b combination set up separately on first and second cylinder barrel. regulating piston chamber 211 and the first unloading plunger shaft 212a are arranged on the first cylinder barrel 21a inner chamber vertically and with being interconnected, second unloading plunger shaft 212b and location mantle cavity 313 are arranged on the second cylinder barrel 22 inner chamber vertically and with being interconnected, the corresponding end of the first unloading plunger shaft on the first cylinder barrel and the second unloading plunger shaft on the second cylinder barrel is threaded connection and makes this two chamber be combined with each other, form the unloading plunger shaft 212 of Guan Bi, the length of unloading plunger shaft 212 can be passed through the threaded of two cylinder barrels and be adjusted, by the length adjustment of unloading plunger shaft 212 is changed the decrement regulating spring 24, so as to produce different elastic force.
The elastic force regulating spring 24 acts on unloading piston 23, so as on the intercommunicating pore 219 being pressed between regulating piston chamber and unloading plunger shaft. In order to make unloading piston 23 and intercommunicating pore 219 realize well being tightly connected, unloading pistons end is designed to taper seat, and the corresponding hole wall of intercommunicating pore 219 is designed to internal conical surface suitable with this taper seat with it, under the effect regulating spring, the taper seat of unloading pistons end is by the internal conical surface that is pressed in intercommunicating pore 219, it is greatly improved sealing property, it is ensured that the gas of upper piston area cavity is sealed to be cut off outside unloading plunger shaft.
Claims (10)
1., for simulating a blast load simulative generator for deep rock mass stress, it is located on rock mass stress test carrier, it is characterised in that: described blast load simulative generator includes loading unit and unloading unit; Loading unit includes piston and is provided with air inlet and unloads the oil cylinder of QI KOU, and described piston is slidably arranged in oil cylinder; Described unloading unit includes sidewall and is provided with the cylinder barrel of unloading port, unloading piston and regulates spring, described cylinder barrel one end is docked with unloading QI KOU, described unloading piston is located in cylinder barrel slidably, and connect with the other end of cylinder barrel by regulating spring, when regulating spring and being in free state, all side seals of unloading piston block up described unloading port; Loading unit is by injecting pressure-air to air inlet, promote piston press fluid, unloading unit is when oil cylinder internal gas pressure raises, open unloading port by the unloading piston pushed by gases at high pressure and form path discharge gas, when air pressure reduces, unloading piston resets under the effect regulating spring and blocks unloading port, and described blast load simulative generator is arranged on top board or the side plate of described carrier.
2. blast load simulative generator according to claim 1, it is characterized in that: described loading unit also includes nut, the piston rod of described piston stretches out the described nut that spins outside described oil cylinder, making between the stroke limiting of the piston spacing between nut and oil cylinder, the piston end of described oil cylinder connects with the connecting hole on described top board or side plate.
3. blast load simulative generator according to claim 1, it is characterized in that: described unloading unit also includes a positioning sleeve, described cylinder barrel is sequentially provided with the regulating piston chamber being interconnected vertically, unloading plunger shaft and location mantle cavity, and unloading plunger shaft is provided with unloading port, what the opening in described regulating piston chamber was connected to described oil cylinder unloads in QI KOU, regulating piston, unloading piston and positioning sleeve are respectively correspondingly placed in regulating piston chamber, in unloading plunger shaft and location mantle cavity, and the piston rod of regulating piston extend into unloading plunger shaft and is connected with unloading piston, regulate spring and be set on the piston rod of unloading piston, and unloading piston is pressed to the intercommunicating pore between regulating piston chamber and unloading plunger shaft, the piston rod that unloading piston connects extend in the mantle cavity of location, it is connected with the positioning sleeve in this chamber.
4. blast load simulative generator according to claim 3, it is characterized in that: also include a positioning unit for positioning positioning sleeve, positioning unit includes alignment pin and location spring, the cavity wall of location mantle cavity is provided with pin hole, alignment pin is placed in pin hole, location spring is set on alignment pin, and alignment pin one side pressure is touched on positioning sleeve excircle side, when unloading piston driving positioning sleeve and move axially and making hole, location move to alignment pin position, alignment pin embeds in this hole, location, and makes unloading piston axially position.
5. blast load simulative generator according to claim 3, it is characterised in that: described cylinder barrel is made up of interconnective first cylinder barrel and the second cylinder barrel.
6. blast load simulative generator according to claim 5, it is characterized in that: the inner chamber of described first cylinder barrel is provided with the described regulating piston chamber being interconnected and the first unloading plunger shaft vertically, and described unloading port is arranged in the cavity wall of the first unloading plunger shaft.
7. blast load simulative generator according to claim 6, it is characterised in that the inner chamber of described second cylinder barrel is provided with the second unloading plunger shaft and the described location mantle cavity being interconnected vertically.
8. blast load simulative generator according to claim 7, it is characterised in that the corresponding end of the first unloading plunger shaft and the second unloading plunger shaft is threaded connection and makes this two chamber be combined with each other, and forms the described unloading plunger shaft of Guan Bi.
9. blast load simulative generator according to claim 3, it is characterized in that: described unloading pistons end is provided with taper seat, the hole wall of described intercommunicating pore is provided with the internal conical surface suitable with described taper seat, under the effect regulating spring, the taper seat of unloading pistons end is pressed on the internal conical surface in intercommunicating pore.
10. blast load simulative generator according to claim 1, it is characterised in that: described top board or side plate include outer panel, interior plate and power transmission thin plate; Described outer panel is provided with connecting hole, described interior plate is provided with reservoir, the bottom land of this reservoir is evenly equipped with some through holes, and described blast load simulative generator is connected on the connecting hole of outer panel, the bottom land end that described power transmission thin plate is sealedly connected on interior plate reservoir;Outer panel is sealedly connected on interior plate, the reservoir on interior plate is covered, to form liquid storage cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620025362.0U CN205317604U (en) | 2016-01-11 | 2016-01-11 | A blast load simulative generator for simulating deep rock mass stress |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620025362.0U CN205317604U (en) | 2016-01-11 | 2016-01-11 | A blast load simulative generator for simulating deep rock mass stress |
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| CN205317604U true CN205317604U (en) | 2016-06-15 |
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| CN201620025362.0U Withdrawn - After Issue CN205317604U (en) | 2016-01-11 | 2016-01-11 | A blast load simulative generator for simulating deep rock mass stress |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527182A (en) * | 2016-01-11 | 2016-04-27 | 中国人民解放军理工大学 | Explosion load simulation generator for simulating stress conditions of deep rock mass |
| CN109142103A (en) * | 2018-09-26 | 2019-01-04 | 中国人民解放军陆军工程大学 | Large-equivalent underground explosion effect simulation device |
| CN111665123A (en) * | 2020-06-16 | 2020-09-15 | 中国人民解放军陆军工程大学 | Deep underground explosion effect simulation test device and test technology |
| CN113218610A (en) * | 2021-04-08 | 2021-08-06 | 哈尔滨工程大学 | Strong-impact large-pulse-width impact load simulation device and control method thereof |
-
2016
- 2016-01-11 CN CN201620025362.0U patent/CN205317604U/en not_active Withdrawn - After Issue
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527182A (en) * | 2016-01-11 | 2016-04-27 | 中国人民解放军理工大学 | Explosion load simulation generator for simulating stress conditions of deep rock mass |
| CN105527182B (en) * | 2016-01-11 | 2017-03-08 | 中国人民解放军理工大学 | A kind of blast load simulative generator for simulating deep rock mass stress |
| CN109142103A (en) * | 2018-09-26 | 2019-01-04 | 中国人民解放军陆军工程大学 | Large-equivalent underground explosion effect simulation device |
| CN109142103B (en) * | 2018-09-26 | 2023-11-03 | 中国人民解放军陆军工程大学 | Large-equivalent underground explosion effect simulation device |
| CN111665123A (en) * | 2020-06-16 | 2020-09-15 | 中国人民解放军陆军工程大学 | Deep underground explosion effect simulation test device and test technology |
| CN111665123B (en) * | 2020-06-16 | 2022-05-10 | 中国人民解放军陆军工程大学 | Deep underground explosion effect simulation test device and test method |
| CN113218610A (en) * | 2021-04-08 | 2021-08-06 | 哈尔滨工程大学 | Strong-impact large-pulse-width impact load simulation device and control method thereof |
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Granted publication date: 20160615 Effective date of abandoning: 20171114 |
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| AV01 | Patent right actively abandoned |