CN205317570U - Loading device of simulation deep rock mass stress - Google Patents
Loading device of simulation deep rock mass stress Download PDFInfo
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- CN205317570U CN205317570U CN201620024034.9U CN201620024034U CN205317570U CN 205317570 U CN205317570 U CN 205317570U CN 201620024034 U CN201620024034 U CN 201620024034U CN 205317570 U CN205317570 U CN 205317570U
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Abstract
The utility model relates to a loading device of simulation deep rock mass stress, including bear, flexible capsule, pipe, blast load simulative generator and simulation excavation instrument, bear the cavity that the frame has the cuboid shape, during the rock mass test piece was fixed in this cavity, flexible capsule arranged in between each side and the cavity chamber wall relative with this side of rock mass test piece, is equipped with at least one pipe on each flexible capsule, and highly pressurised liquid to rock mass test piece loading, makes the rock mass test piece produce the high ground stress who simulates get into flexible capsule through this pipe in, blast load simulative generator sets up and is constituteing the outside of a lateral cavity wall of cavity, be equipped with first handle hole on the perpendicular chamber wall of cavity, be equipped with the second handle hole that runs through capsule thickness orientation on the corresponding position to flexible capsule that should the lateral cavity wall. Beneficial effect: adopt flexible capsule to the test piece loading, can be very steadily balancedly afterburning to the test piece, simulate deep rock mass's high ground stress state well.
Description
Technical field
This utility model relates to the analog of stress, particularly relates to a kind of charger 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).
Summary of the invention
The purpose of this utility model is in that 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, described charger of the present utility model includes carrier, flexible capsule, conduit, blast load simulative generator and excavation simulation instrument; Described carrier has the cavity of cuboid shape, the rock test piece of cuboid shape is fixed in this cavity, described flexible capsule is placed between every one side of described rock test piece and the cavity cavity wall relative with this side, each flexible capsule is provided with at least one conduit, highly pressurised liquid enters in flexible capsule by this conduit, rock test piece is loaded, makes rock test piece produce the high-ground stress of simulation; Described blast load simulative generator is arranged on the outside of the side cavity wall forming described cavity, and the triangle hydraulic impulse load of generation is loaded in rock test piece through flexible capsule conduction is dynamic, make to produce in rock test piece the stress state of simulated explosion ground disturbance;The vertical cavity wall of the one of described cavity is provided with the first handle hole, to should side chamber wall flexible capsule correspondence position on be provided with through the second handle hole of capsule thickness direction, rock test piece is simulated tunnel excavation through described first and second handle hole by underground boring tool, makes rock test piece produce the stress state of excavation simulation unloading.
The design further of described charger is in that, described carrier includes pedestal, bearing frame, base plate, side plate and top board; Described base level is arranged, described bearing frame is the framework straddling the cuboid on pedestal, this bearing frame lower end is connected with pedestal, described base plate is placed on the pedestal that bearing frame straddles, and can slide on pedestal, four described side plates are placed in four vertical side of bearing frame, and described top board is placed in the top of bearing frame, and the medial surface being placed in the top board on bearing frame, side plate and base plate crowds around into described cavity mutually; Described first handle hole is arranged on and straddles on the side plate that direction is perpendicular with bearing frame; Described blast load simulative generator is arranged on the outside of described top board or side plate, and blast load simulative generator is produced simulated explosion load and is transmitted in the flexible capsule of corresponding side by this top board or side plate, and is loaded in rock test piece through flexible capsule.
In order to facilitate the connection of flexible capsule upper conduit and Hydraulic Station, described side plate or top board are provided with fairlead, and the conduit that described flexible capsule connects is drawn by this fairlead.
In order to be connected with blast load simulative generator, arranged outside has the top board of blast load simulative generator or side plate to 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, 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, becomes the cavity wall of described cavity and presses and touch in flexible capsule; Outer panel is sealedly connected on interior plate, the reservoir on interior plate is covered, to form liquid storage cylinder.
One preferred blast load simulative generator includes loading unit and unloading unit, described loading unit include nut, piston and be provided with air inlet and unload the oil cylinder of QI KOU, described piston is slidably arranged in oil cylinder, and the piston rod of this 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, described unloading unit includes cylinder barrel, regulating piston, unloading piston, regulate spring, positioning sleeve, alignment pin and location spring, described cylinder barrel is sequentially provided with the regulating piston chamber being interconnected vertically, unloading plunger shaft and location mantle cavity, and the cavity wall of unloading plunger shaft and location mantle cavity is respectively equipped with unloading port and pin hole, 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, 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 make unloading piston axially position.
Further, described cylinder barrel includes interconnective first cylinder barrel and the second cylinder barrel, 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 inner chamber of described second cylinder barrel is provided with the second unloading plunger shaft and the described location mantle cavity being interconnected vertically, and described pin hole is arranged in the cavity wall of location mantle cavity, 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 described unloading plunger shaft of Guan Bi.
In order to make intercommunicating pore can be tightly connected preferably with unloading pistons end, 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.
In order to facilitate the conduit in flexible capsule to draw, the conduit in described flexible capsule is arranged on the side with described cavity cavity wall opposite side.
Design further and be in that, the second handle hole in described flexible capsule includes steel pipe, first circular ring plate, second circular ring plate and sealing of hole plectane, described first circular ring plate, hole on second circular ring plate and suitable along the hole that flexible capsule thickness direction is arranged and outer diameter of steel pipes, first circular ring plate, second circular ring plate is in flexible glue, steel pipe wears this flexible capsule along the hole of flexible capsule thickness direction, and be connected with the first circular ring plate being in steel pipe one end, distance that second circular ring plate and the first angular interval are suitable with capsule thickness and and fastener for connection, first, on second circular ring plate capsule respectively, the inner boundary sulfuration of corresponding aperture sealingly connects, arranging female thread on the pore of steel pipe, described hole circle plate circumference is provided with external screw thread, and sealing of hole plectane 204 spiral is connected in the pore of steel pipe.
In order to facilitate test specimen installation or removal on charger, described pedestal is provided with guide rail, the downside of base plate is provided with roller, base plate passes through the slip on pedestal of the roller scrolling realization base plate on guide rail, make test specimen substantially can install outside the described cavity of test, then pass through track and send in cavity. Same test specimen can be released and carry out outside cavity, from the dismounting test-bed, significantly facilitating operation.
The beneficial effects of the utility model are in that: 1) adopt flexible capsule that test specimen is loaded, can be very steadily balancedly afterburning to test specimen, simulate the high-ground stress state of deep rock mass well, load maintainer structure can be made again to simplify; 2) flexible capsule is carried out the design of spare interface, so as to carry out excavation disturbance test test specimen is loaded static pressure under high-ground stress state to simulate, it is thus possible to simulate the excavation of deep rock mass more accurately, obtains more unfailing test data; 3) produce triangle hydraulic coupling pulse with blast load simulative generator and carry out simulated explosion load, and this hydraulic impulse is transmitted to power transmission thin plate via some uniform through holes, so that hydraulic impulse load is arranged, it is run through uniform through hole and is balancedly applied to power transmission thin plate, hydraulic impulse vibration wave can be delivered in test specimen by power transmission thin plate well by capsule, thus simulating 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 this utility model charger.
Fig. 2 is the sectional view along base length direction of the charger shown in figure.
Fig. 3 is the structural representation of blast load simulative generator.
Fig. 4 is the structural representation of loading unit in blast load simulative generator.
Fig. 5 is the structural representation of unloading unit in blast load simulative generator.
Fig. 6 is the hydraulic impulse schematic diagram that blast load simulative generator produces.
Fig. 7 is the flexible capsule with the second handle hole.
Wherein, carrier 1, pedestal 11, bearing frame 12, side plate 13, bullport 18, first handle hole 134, top board 14, outer panel 141, connecting hole 1411, interior plate 142, reservoir 1421, through hole 1422, power transmission thin plate 143, side plate 15, flexible capsule 2, second handle hole 20, first circular ring plate 201, second circular ring plate 202, steel pipe 203, sealing of hole raw sheet 204, blast load simulative generator 3, loading unit 31, oil cylinder 311, air inlet 3111, unload QI KOU 3112, piston 312, nut 313, unloading unit 32, cylinder barrel 321, first cylinder barrel 321a, second cylinder barrel 321b, regulating piston chamber 3211, unloading plunger shaft 3212, first unloading plunger shaft 3212a, second unloading plunger shaft 3212b, unloading port 32121, location mantle cavity 3213, pin hole 32131, intercommunicating pore 3219, regulating piston 322, unloading piston 323, regulate spring 324, positioning sleeve 325, alignment pin 326, location spring 327, hydraulic tube 4, rock test piece 5.
Detailed description of the invention
As Fig. 1,2, charger of the present utility model is mainly made up of carrier 1, flexible capsule 2, blast load simulative generator 3 and hydraulic tube 4. Carrier 1 has the cavity of the rock test piece 5 for holding cuboid shape, rock test piece 5 is placed in cavity, flexible capsule 2 is placed between every one side and the cavity cavity wall relative with this side of this rock test piece 5, each flexible capsule 2 is provided with at least one conduit 21, the hydraulic oil introduced from Hydraulic Station enters in flexible capsule by conduit 21, hydraulic oil is loaded on six sides of rock test piece 5 by flexible capsule, the high-ground stress environment of simulation rock test piece. Blast load simulative generator 3 is arranged on the outside (may also be arranged on the outside of side cavity wall) of the end face cavity wall of the cavity forming above-mentioned carrier 1, this generator will produce triangle hydraulic impulse load, this hydraulic impulse load is conducted to flexible capsule 2 by cavity wall, through flexible capsule 2 load in rock test piece 5, in order to simulated explosion disturbance, make to produce in rock test piece 5 stress state of blast ground disturbance.
For the ease of simulating the tunnel excavation state of deep rock mass, one vertical cavity wall of the cavity in forming above-mentioned carrier 1 is provided with the first handle hole 134, to should side chamber wall flexible capsule 2 correspondence position on be provided with through second handle hole 20 in the thick 2 degree of directions of capsule, so underground boring tool of simulation, such as drilling tool 6 can pass through first handle hole the 134, second handle hole 20 and rock test piece 5 is simulated the excavation in tunnel, make the stress state of rock mass examination 5 generation macroscopic destruction, with excavation simulation unloading disturbance.
In conjunction with Fig. 2, carrier 1 all adopts 35CrMo material to make, it is possible under bearing the internal 0 ~ 10Mpa pressure condition of capsule 2, amount of plastic deformation is only small, thus the precision of test data is formed without impact. This main carrier 1 to be made up of pedestal 11, bearing frame 12, base plate 16, side plate 13 and top board 14. Pedestal 11 level frame sets on the ground, and bearing frame 12 is the framework of a cuboid, and this framework straddles on the base 11, and bottom is connected with pedestal 11 by connecting hole and the bolt and nut securing member arranged.Base plate 16 is placed on the pedestal 11 that bearing frame 12 straddles, above-mentioned cavity is entered for ease of rock test piece, base plate 16 is to be slidably attached on pedestal 11, outside so extensible cavity of base plate 16, so that test specimen is placed, it is put into slipping in described cavity again through base plate 15 opposite base 11 after base plate 16 until test specimen. The present embodiment is to arrange guide rail 111 on pedestal, and arranges the roller (not shown) of correspondence in the downside of base plate 16, and base plate passes through the roller above-mentioned base plate of the scrolling realization on the guide rail slip on pedestal relatively, in order to described cavity put into by test specimen.
Four vertical side of bearing frame 12 and the horizontal top surface at top are covered by side plate 13,15 and top board 14 respectively, and thus top board, side plate and base plate crowd around into the cavity of above-mentioned placement rock test piece mutually. For the present embodiment, the first handle hole 131 is arranged on and straddles on the perpendicular side plate in direction 14 with bearing frame, be so easy to the installation settings of the drilling tool 6 of excavation simulation, blast load simulative generator is arranged on the outside of top board simultaneously. In theory, handle hole 131 can be arranged on four vertical side of bearing frame 12 and take up an official post on side plate, and blast load simulative generator 3 can be arranged on the either side of bearing frame 12.
For the disturbance to deep rock mass of the simulated explosion ground, this utility model is provided with blast load simulative generator 3. The outside of top board 14 that this blast load simulative generator 3 is placed, naturally it is also possible to be arranged on outside side plate 13, top board 14(or side plate 13) outside be provided with connecting hole 1411, there is inside it liquid storage cylinder 1421, connecting hole 1411 connects with liquid storage cylinder 1421. In the present embodiment, top board 14 is designed to an assembly, it is mainly made up of outer panel 141, interior plate 142 and power transmission thin plate 143, connecting hole 1411 is arranged on outer panel 141, and reservoir is set on interior plate 142, the bottom land of this reservoir is evenly equipped with some through holes 1422, and power transmission thin plate 143 is sealedly connected on the bottom land end of reservoir, thus becoming a cavity wall of described test specimen cavity, pressure is touched in corresponding flexible capsule 2. Outer panel 141 is sealed on interior plate 142, and both are connected and sealed by securing member. Therefore, the reservoir on interior plate forms described liquid storage cylinder 1421 through the capping of outer panel 141.
Such as Fig. 3,4,5, blast load simulative generator 3 includes loading single 31 and unloading unit 32. Loading unit 31 includes nut 313, piston 312 and is provided with air inlet and unloads the oil cylinder 311 of QI KOU, piston 312 is slidably arranged in oil cylinder 311, and the piston rod of this piston stretches out the described nut 313 that spins outside described oil cylinder, nut 313 is rotatably connected in the position of piston rod and the movement travel direct correlation of piston 312, and the stroke of piston is limited in the spacing between nut and oil cylinder. Two circumferential positions corresponding to oil cylinder 311 piston rod one end are respectively equipped with radially distributed a pair air inlet 3111 and unload QI KOU 3112 for a pair, and the piston end of oil cylinder 311 connects with the connecting hole 1411 on outer panel 141.
Unloading unit 32 includes cylinder barrel 321, regulating piston 322, unloading piston 323, regulates spring 324, positioning sleeve 325, alignment pin 326 and location spring 327. cylinder barrel 321 is sequentially provided with the regulating piston chamber 3211 being interconnected vertically, unloading plunger shaft 3212 and location mantle cavity 3213, and the circumferential cavity wall of unloading plunger shaft 3212 and location mantle cavity 3213 is respectively equipped with unloading port 32121 and pin hole 32131, what the opening in regulating piston chamber 3211 was connected to oil cylinder 311 unloads in QI KOU 3112, regulating piston 323, unloading piston 324 and positioning sleeve are respectively placed in regulating piston chamber, in unloading plunger shaft and location mantle cavity, and the piston rod of regulating piston 322 extend into unloading plunger shaft 3212 and is connected with unloading piston 323, regulate spring 324 and be set on the piston rod of unloading piston 323, its one end is conflicted on unloading piston 323, the other end is conflicted in the cavity wall of unloading plunger shaft 3212, unloading piston 323 is pressed to the intercommunicating pore 3219 between regulating piston chamber and unloading plunger shaft,The piston rod of unloading piston extend in the mantle cavity of location, positioning sleeve 325 is connected on the piston rod of the unloading piston 323 stretched in this chamber, location spring 327 and alignment pin 326 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 32131, and end pressure touch location spring one end, the other end of location spring 327 pushes alignment pin, alignment pin one side pressure is made to touch 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 make unloading piston axially position.
Above-mentioned blast load simulative generator 3 is connected with air compression station (not shown) by the air inlet 3111 on oil cylinder 311, air compression station provides high pressure gas in moment to blast load simulative generator 3, this high pressure gas is entered in oil cylinder 311 by pipeline by air inlet 3111, piston 312 is impacted sharp downward movement by high pressure draught, to move required time for tRiseLAP, around here the liquid in oil cylinder 311 and the liquid storage cylinder 1421 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 312, piston 312 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 323 more than adjustment spring 324, unloading piston 323 moves right, no longer pressure is touched on intercommunicating pore 3219, intercommunicating pore 3219 is opened, gases at high pressure release from intercommunicating pore 3219, and with the positioning sleeve that unloading piston 323 moves to the right simultaneously, it positions hole when moving to alignment pin position, alignment pin embeds in this hole, location 328, unloading piston is made to be axially located, intercommunicating pore 3219 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. 6, in order to simulated explosion Ground shock waves disturbance. This hydraulic impulse load acts on power transmission thin plate 143 by forming the uniform through hole 1422 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 143 through flexible capsule 2.
The triangle hydraulic impulse load formed by blast load simulative generator 3, its surge pressure Pf can regulate, adjustment is to be realized by the movement travel of regulating piston 312, and the adjustment of the trip is realized by the adjusting nut 313 position on the piston rod of piston 312. Nut 313 diverse location on the piston rod, forms the spacing different from oil cylinder casing wall, thus limiting the different motion stroke of piston 312, therefore the adjustment of surge pressure Pf is very easily by the blast load simulative generator in this utility model.
This utility model arranges the bottom land of a uniform through hole 1422 at liquid storage cylinder 1421, be equivalent to a wave filter, make hydraulic impulse transmit to power transmission thin plate 143 via through hole 1422, so that hydraulic impulse is carried out waveform arrangement, be run through uniform through hole and be balancedly applied on power transmission thin plate 143.
In order to make the elastic force scalable regulating spring 324 in above-mentioned unloading unit 32, cylinder barrel 321 makes combination type, this cylinder barrel is by the first cylinder barrel 321 and the second cylinder barrel 322 is threaded vertically is formed, and unloading plunger shaft 3212 therein is formed by first and second unloading plunger shaft 3212a, the 3212b combination set up separately on the one or two cylinder barrel.Regulating piston chamber 3211 and the first unloading plunger shaft 3212a are arranged on the first cylinder barrel 321 inner chamber vertically and with being interconnected, second unloading plunger shaft 3212b and location mantle cavity 3213 are arranged on the second cylinder barrel 322 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 3212 of Guan Bi, the length of unloading plunger shaft 3212 can be passed through the threaded of two cylinder barrels and be adjusted, by the length adjustment of unloading plunger shaft 3212 is changed the decrement regulating spring 324, so as to produce different elastic force.
The elastic force regulating spring 324 acts on unloading piston 323, so as on the intercommunicating pore 3219 being pressed between regulating piston chamber and unloading plunger shaft. In order to make unloading piston 323 and intercommunicating pore 3219 realize well being tightly connected, unloading pistons end is designed to taper seat, and the corresponding hole wall of intercommunicating pore 3219 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 3219, it is greatly improved sealing property, it is ensured that outside the gas of upper piston area cavity is sealed partition and unloads plunger shaft.
Above-mentioned flexible capsule 2 adopts the pressure rubber of high intensity to make, under carrier 1 supports can bearing pressure 0 ~ 15Mpa, and can deform with the shape of test specimen so that it is can fully snugly touch with test specimen, better to simulate the stress of deep rock mass. In conjunction with Fig. 2, flexible capsule 2 is the size size much smaller than its width with test specimen contact surface or length direction of rectangular-shaped its thickness direction of bag, conduit 21 is arranged on the side of this capsule and cavity cavity wall opposite side, in order to draw from the side plate forming cavity wall or top board or base plate. Being filled with in flexible capsule 2, highly pressurised liquid (oil) is front, it is necessary to its evacuation, in order to conveniently bleed, and is also provided with another root conduit 21 as exhaust tube, and the gas in flexible capsule is discharged by this exhaust tube.
Such as Fig. 7, in the flexible capsule 2 corresponding to the cavity wall corresponding to tunnel excavation side, it has second handle hole 20 running through capsule thickness 2 direction, this second handle hole 20 includes steel pipe 203, first circular ring plate 201, second circular ring plate 202 and sealing of hole plectane 204, first circular ring plate 201, second circular ring plate 202 is made up of steel material, hole on hole thereon and flexible capsule is suitable with outer diameter of steel pipes, first circular ring plate 201, second circular ring plate 202 and flexible capsule are set on steel pipe by above-mentioned corresponding aperture, first circular ring plate 201 and the second circular ring plate 202 are connected on steel pipe at a distance of the distance suitable with capsule thickness, and first circular ring plate be in steel tube end part, first circular ring plate 201 and the second circular ring plate 202 are arranged on inside flexible capsule and (may also be arranged on outside), sealingly connect with the inner boundary sulfuration of corresponding aperture on capsule respectively.
For the uniform dead load making test specimen 5 be subject in the test of high-ground stress, steel pipe 203 aperture corresponding to test specimen one end blocks, for this, female thread is set on the pore of steel pipe 203, and a circumference is set is provided with externally threaded sealing of hole plectane 204, when static pressure loads, sealing of hole plectane 204 is rotatably connected in the pore of steel pipe 203, and so as to be positioned at the position flushed with the first circular ring plate 201, when high-ground stress is tested and is filled highly pressurised liquid in capsule.First circular ring plate 201 and capsule combined effect are on test specimen, it is ensured that load uniformity. And when excavating operation, screw out sealing of hole plectane 204.
Conduit 21 in flexible capsule 2 is from forming the side plate of cavity wall, top board, base plate extraction, to be connected with Hydraulic Station and air compression station respectively by corresponding pipeline. For this side plate, top board or base plate are all respectively equipped with fairlead, can referring to Fig. 2.
Claims (10)
1. the charger simulating deep rock mass stress, it is characterised in that: include carrier, flexible capsule, conduit, blast load simulative generator and excavation simulation instrument; Described carrier has the cavity of cuboid shape, the rock test piece of cuboid shape is fixed in this cavity, described flexible capsule is placed between every one side of described rock test piece and the cavity cavity wall relative with this side, each flexible capsule is provided with at least one conduit, highly pressurised liquid enters in flexible capsule by this conduit, rock test piece is loaded, makes rock test piece produce the high-ground stress of simulation; Described blast load simulative generator is arranged on the outside of the side cavity wall forming described cavity, and the triangle hydraulic impulse load of generation is loaded in rock test piece through flexible capsule conduction is dynamic, make to produce in rock test piece the stress state of simulated explosion ground disturbance; The vertical cavity wall of the one of described cavity is provided with the first handle hole, to should side chamber wall flexible capsule correspondence position on be provided with through the second handle hole of capsule thickness direction, rock test piece is simulated tunnel excavation through described first and second handle hole by underground boring tool, makes rock test piece produce the stress state of excavation simulation unloading.
2. a kind of charger simulating deep rock mass stress according to claim 1, it is characterised in that: described carrier includes pedestal, bearing frame, base plate, side plate and top board; Described base level is arranged, described bearing frame is the framework straddling the cuboid on pedestal, this bearing frame lower end is connected with pedestal, described base plate is placed on the pedestal that bearing frame straddles, and can slide on pedestal, four described side plates are placed in four vertical side of bearing frame, and described top board is placed in the top of bearing frame, and the medial surface being placed in the top board on bearing frame, side plate and base plate crowds around into described cavity mutually; Described first handle hole is arranged on and straddles on the side plate that direction is perpendicular with bearing frame; Described blast load simulative generator is arranged on the outside of described top board or side plate, and blast load simulative generator is produced simulated explosion load and is transmitted in the flexible capsule of corresponding side by this top board or side plate, and is loaded in rock test piece through flexible capsule.
3. a kind of charger simulating deep rock mass stress according to claim 2, it is characterised in that: described side plate or top board are provided with fairlead, and the conduit that described flexible capsule connects is drawn by this fairlead.
4. a kind of charger simulating deep rock mass stress according to claim 2, it is characterised in that: arranged outside has the top board of blast load simulative generator or side plate to 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, 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, becomes the cavity wall of described cavity and presses and touch in flexible capsule;Outer panel is sealedly connected on interior plate, the reservoir on interior plate is covered, to form liquid storage cylinder.
5. a kind of charger simulating deep rock mass stress according to claim 2, it is characterised in that: described blast load simulative generator includes loading unit and unloading unit, described loading unit include nut, piston and be provided with air inlet and unload the oil cylinder of QI KOU, described piston is slidably arranged in oil cylinder, and the piston rod of this 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, described unloading unit includes cylinder barrel, regulating piston, unloading piston, regulate spring, positioning sleeve, alignment pin and location spring, described cylinder barrel is sequentially provided with the regulating piston chamber being interconnected vertically, unloading plunger shaft and location mantle cavity, and the cavity wall of unloading plunger shaft and location mantle cavity is respectively equipped with unloading port and pin hole, 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, 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 make unloading piston axially position.
6. a kind of charger simulating deep rock mass stress according to claim 5, it is characterized in that: described cylinder barrel includes interconnective first cylinder barrel and the second cylinder barrel, 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 inner chamber of described second cylinder barrel is provided with the second unloading plunger shaft and the described location mantle cavity being interconnected vertically, and described pin hole is arranged in the cavity wall of location mantle cavity, 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 described unloading plunger shaft of Guan Bi.
7. a kind of charger simulating deep rock mass stress according to claim 6, 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.
8. a kind of charger simulating deep rock mass stress according to claim 1, it is characterised in that: the conduit in described flexible capsule is arranged on the side with described cavity cavity wall opposite side.
9. a kind of charger simulating deep rock mass stress according to claim 1 or 8, it is characterized in that: the second handle hole in described flexible capsule includes steel pipe, first circular ring plate, second circular ring plate and sealing of hole plectane, described first circular ring plate, hole on second circular ring plate and suitable along the hole that flexible capsule thickness direction is arranged and outer diameter of steel pipes, first circular ring plate, second circular ring plate is in flexible glue, steel pipe wears this flexible capsule along the hole of flexible capsule thickness direction, and be connected with the first circular ring plate being in steel pipe one end, distance that second circular ring plate and the first angular interval are suitable with capsule thickness and and fastener for connection, first, on second circular ring plate capsule respectively, the inner boundary sulfuration of corresponding aperture sealingly connects, arranging female thread on the pore of steel pipe, described hole circle plate circumference is provided with external screw thread, and sealing of hole plectane 204 spiral is connected in the pore of steel pipe.
10. a kind of charger simulating deep rock mass stress according to claim 2, it is characterised in that: described pedestal is provided with guide rail, and the downside of base plate is provided with roller, and base plate passes through the slip on pedestal of the roller scrolling realization base plate on guide rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620024034.9U CN205317570U (en) | 2016-01-11 | 2016-01-11 | Loading device of simulation deep rock mass stress |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510120A (en) * | 2016-01-11 | 2016-04-20 | 中国人民解放军理工大学 | Loading device for simulating stress state of deep rock mass |
| CN114992187A (en) * | 2022-08-03 | 2022-09-02 | 中国矿业大学(北京) | Multifunctional balanced loading device and method for model test |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510120A (en) * | 2016-01-11 | 2016-04-20 | 中国人民解放军理工大学 | Loading device for simulating stress state of deep rock mass |
| CN114992187A (en) * | 2022-08-03 | 2022-09-02 | 中国矿业大学(北京) | Multifunctional balanced loading device and method for model test |
| CN114992187B (en) * | 2022-08-03 | 2022-11-01 | 中国矿业大学(北京) | Multifunctional balanced loading device and method for model test |
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