CN103063461A - Rockburst model testing device - Google Patents
Rockburst model testing device Download PDFInfo
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- CN103063461A CN103063461A CN2012105883647A CN201210588364A CN103063461A CN 103063461 A CN103063461 A CN 103063461A CN 2012105883647 A CN2012105883647 A CN 2012105883647A CN 201210588364 A CN201210588364 A CN 201210588364A CN 103063461 A CN103063461 A CN 103063461A
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Abstract
The invention provides a rockburst model testing device which is composed of a main machine and a control system. The main machine is mainly composed of a base, model in-position advance and retreat oil cylinders (10), a restraining door panel (42) and bearing frames (15), wherein the model in-position advance and retreat oil cylinders are two in number and symmetrically arranged on two sides of the left a portion above the base. The bearing frames are multiple in number and arranged on the right of a portion above the base in an aligned mode and side by side. In an inner cavity which is formed by a plurality of horseshoe-shaped bearing frames, the left side is provided with a side locating beam (43), the right side is provided with side uniform-distribution pressure loaders (67), the upper portion is provided with uniform-distribution top uniform-distribution pressure loaders (16), the bottom is provided with a base board (63) used for place taking of a model, and the first bearing frame is provided with the restraining door panel part. According to the rockburst model testing device, imitation of large-size model rockburst of 100*60*40 cm can be achieved indoors, an obvious size domino effect caused by the small size of a sample is further reduced, and the rockburst phenomenon is imitated really.
Description
Technical field
The present invention relates to is the indoor model test apparatus that copies and reproduce that carries out rock burst that a kind of model block is of a size of 100 * 60 * 40cm, relates to the structure of device and the self-equilibrating of employing and adds uninstalling system.
Background technology
Rock burst is under the high-ground stress condition in the underground rock engineering excavation, a kind ofly brings out a kind of special dynamic phenomenon of sudden change by Progressive failure, have country rock suddenly, launch to the excavation space fiercely, the feature of throwing, ejection.The generation of rock burst directly threatens the safety of personnel and equipment, has destroyed underground engineering structure, has become the great technical barrier of deep or deep-buried underground engineering construction, is a global Disasters.As famous rock engineering scholar Brown(1988) professor is pointed: " even to reach consensus in rock burst definition all be difficult; the successful answer of this problem of rock burst; at present just in the whole world a lot of research centres studying, its progress will represent development and the important breakthrough of this subject of rock mechanics.”
Because rock burst mechanical mechanism and complexity thereof, since people began to be familiar with rock burst, Chinese scholars had been carried out a large amount of exploratory research, had obtained certain achievement.Because bringing out etc. of the variation of the complicacy of physical-mechanical properties of rock and geomechanical condition, engineering construction, so that the mechanism of rock burst is extremely complicated, the relevant issues that rock burst research stresses to have run in the engineering more, the theoretical research of rock burst is made slow progress, and the prediction of rock burst and control is still lacked ripe theory coach.Physical simulation can be carried out copying of rock burst indoor, can obtain the understanding of the more deep layer of more Mechanism of Rockburst Occurreds by the reproduction of rock burst, and by advanced measurement means, can carry out the test of many reference amounts, thereby carry out quantitative analysis, the mechanism that the research rock burst produces, process, condition and control measure effectively are a kind of effectively research methods.At present, ongoing physical experiments over-borrowing helps pressing machine to be carried out, owing to tested the restriction of facility, specimen size is little, and the size effect impact is large, and there is larger difference in its representative physical condition and state that occurs with rock burst, has significant limitation.The object of the invention is to realize simulating the generation of large scale model rock burst, model test piece is of a size of device and the test of 100 * 60 * 40cm, there is no at present report.
Summary of the invention
Technical matters to be solved by this invention is: a kind of employing large scale model test piece size is provided, realize copying and reproducing of indoor rock burst, carry out the solid rock mechanism that rock burst produces under the high-ground stress condition, process, condition and the effective rock burst model test apparatus of control method.
The present invention solves its technical matters and adopts following technical scheme:
Rock burst model test apparatus provided by the invention is comprised of main frame and hydraulic control system, described main frame mainly by pedestal, model advance and retreat oil cylinder in place, bearing frame forms and retrain the door-plate part.Described model advance and retreat oil cylinder in place has two, and symmetry is contained in the both sides of left part above the pedestal; Bearing frame has a plurality of, and side-by-side alignment is contained in the right part above the pedestal; In by a plurality of inner chambers that are the rectangle that shape of a hoof bearing frame consists of, the left side installation side is to positioning beam, and the right side installation side is to uniform distributed pressure loader, and the top uniform distributed pressure loader is installed on top, and the bottom surface is installed and is used for model backing plate in place; At first bearing frame constraint door-plate part is installed.
Described bearing frame is equipped with several sidepiece lightening holes in the outside on its limit, left and right both sides; Be provided with several lightening holes at its top, and be provided with 1 bolt hole that is used for lifting in its top center position; Two ends in its bottom are processed with respectively 2 through holes and 1 screw, and described through hole is used for passing fixedly bearing frame of screw, and described screw is used for installing the bolt of leveling bearing frame; Respectively be processed with 1 through hole on its four angles, the bearing frame coupling bolt connects bearing frame by this through hole.
Described pedestal comprises support of scooter base plate, cylinder support fixed mount, support of scooter, cylinder support, model slide plate in place, the model fixed head in place of arranging from bottom to top.
Described slide plate bearing support is steel construction piece, and its sidepiece has 4 perforation that play the loss of weight effect.
Described model advance and retreat oil cylinder in place is the standard component engineering cylinder, each model advance and retreat oil cylinder in place is supported by two cylinder supports, each cylinder support is installed in the both sides of slide plate bearing support 4 left ends by the cylinder support fixed mount, and links together by bearing pin lining, bearing pin, pin.
Described constraint door-plate part, it is the sidepiece at first bearing frame, by constraint door-plate bearing and constraint door bolt axle the constraint door-plate is installed, is screwed door trim panels in constraint door-plate front, with hexagon socket head cap screw compact heap limiting plate and door handle are installed in constraint door-plate front.The constraint baffle plate is installed with hexagon socket head cap screw in back at the constraint door-plate,
Described constraint door-plate part also comprises: in the other side of first bearing frame, by hex bolts compact heap is installed, the installed inside of compact heap has holddown spring, makes compact heap front and back on the compact heap back shaft mobile; Thrust ball bearing, gland nut are installed in the outside of compact heap and are used for the compact heap limiting plate of the rotational angle of restriction compact heap; Be separately installed with two handles at gland nut and compact heap, gland nut and compact heap are rotated at the compact heap back shaft; The constraint door-plate cuts out after model block is in place, fixes by compact heap, gland nut and compact heap limited block.
Described compact heap and gland nut link together by the other side of compact heap back shaft and first bearing frame.
The spatial altitude of described lateral register beam and side direction uniform distributed pressure loader and the position consistency of fixing threaded hole.
Above-mentioned rock burst model test apparatus provided by the invention, its purposes is: carry out copying and reproducing of rock burst indoor, carry out mechanism, process, the condition that rock burst produces and application during effectively control technology is studied by simulation, wherein the model block is of a size of 100 * 60 * 40cm, adopt self-balancing system, realize the simulation of large scale model rock burst, further reduced the obvious size effect that causes because specimen size is little; Under described uniform distributed pressure loader and hydraulic control system effect, realize the model block pressurization and unloading of a plurality of modes.
The present invention compared with prior art has following major advantage:
Reach in the situation of 100 * 60 * 40cm in model test block size, can apply the boundary load that is 20MPa to the maximum to the model test block by uniform distributed pressure loader, the boundary condition of model test block can accurately be simulated and control to the load intensity deviation less than 5%.By close beta element and data acquisition system (DAS), can show and the stress distribution of the inner different parts of analytical model test block that the measuring accuracy error is not more than 5%.Can study solid rock produces rock burst under the high-ground stress condition mechanism, process, condition and effective control technology, simulate really Rock-burst.
Utilize the rock burst model test apparatus that high-grade cement mortar test specimen and plaster cast test specimen have been carried out load test, device Host loading system and hydraulic control system are working properly.Rock burst model test the plaster cast test specimen not being closed in the constraint baffle door situation has obvious Rock-burst.
Description of drawings
Fig. 1 is the main frame assembly structure synoptic diagram of rock burst model test apparatus of the present invention.
Fig. 2 is the right view of Fig. 1.
Fig. 3 is the rear view of Fig. 1.
Fig. 4 is the vertical view of Fig. 1.
Fig. 5 is the structural representation of the bearing frame 15 among Fig. 1.
Fig. 6 is the structural representation of the lateral register beam 43 among Fig. 4.
Fig. 7 is the vertical view of Fig. 6.
Fig. 8 is the structural representation of the backing plate 63 in place of the model among Fig. 2.
Fig. 9 is the vertical view of Fig. 8.
Figure 10 is the structural representation of the slide plate location-plate 23 among Fig. 1.
Figure 11 is the vertical view of Figure 10.
Figure 12 is the structural representation of the compact heap 52 among Fig. 4.
Figure 13 is the vertical view of Figure 12.
Figure 14 is the structural representation of the constraint door-plate bearing 56 among Fig. 2.
Figure 15 is Figure 14 right view.
Figure 16 is Figure 14 vertical view.
Figure 17 is the structural representation of the cylinder support 6 among Fig. 1.
Figure 18 is the right view of Figure 17.
Figure 19 is the vertical view of Figure 17.
Figure 20 is the control principle synoptic diagram of the hydraulic system used of the present invention.
Among the figure: 1. support of scooter base plate; 2, hex bolts; 3. cylinder support fixed mount; 4. support of scooter; 4-1. perforation; 5. socket head cap screw; 6. cylinder support; 6-1. surface plate; 6-2. base plate; 6-3. through hole; 6-4. bolt hole; 6-5. gusset; 7. bearing pin lining; 8. bearing pin; 9. sell; 10. model advance and retreat oil cylinder in place; 11. model slide plate in place; 12. model fixed head in place; 13. sidepiece lightening hole; 13-1. lightening hole; 13-2. bolt hole; 14. bearing frame coupling bolt; 15. bearing frame; 16. top uniform distributed pressure loader; 17, top force transmitting board; 18, rear end force transmitting board; 19. rear portion uniform distributed pressure loader; 20. rear loading plate; 21. hexagonal nut; 22, rear loading plate set bolt; 23. slide plate location-plate; 23-1. bolt hole; 23-2. transverse plate; 23-3. vertical plate; 24. hex bolts; 25. nut; 26. bearing bridge; 27. hexagon socket head cap screw; 28, rolling bearing 6005; 29.T type frid; 30. roller bearing; 31. hex bolts; 32. hex bolts; 33. hex bolts; 34. bearing frame base plate; 35. rear loading plate base plate; 36.T type groove bolt; 37. hexagon socket head cap screw; 38. constraint baffle plate; 39. hexagon socket head cap screw; 40. door trim panels; 41. slotted countersunk flat head screw; 42. constraint door-plate; 43. lateral register beam; 44. side direction force transmitting board; 45. test model; 46. hexagon socket head cap screw; 47. door handle standing screw; 48. hexagonal nut M16; 49. gland nut; 50. thrust ball bearing; 51. handle; 52. compact heap; 53. Compress Spring; 54. hex bolts; 55. bolster; 56. constraint door-plate bearing; 56-1. base plate; 56-2. bolt hole; 56-3. gusset; 56-4. through hole; 56-5. perpendicular plate; 57. hex bolts; 58. thrust ball bearing; 59. constraint door bolt axle; 60. circlip for shaft; 61. hexagon socket head cap screw; 62. hexagon socket head cap screw; 63. backing plate; 63-1. screw hole; 63-2. through hole; 63-3. groove; 63-4. counterbore; 64. door handle; 65, hexagon socket head cap screw; 66. compact heap limiting plate; 67. side direction uniform distributed pressure loader; 68.T type groove bolt; 69. nut M24; 70. rear loading plate limiting plate.
Embodiment
Rock burst model test apparatus provided by the invention is comprised of main frame and hydraulic control system.
Described main machine structure mainly is comprised of pedestal, model advance and retreat oil cylinder 10 in place and bearing frame 15 as shown in Figures 1 to 4, and wherein: model advance and retreat oil cylinder 10 in place has two, and its symmetry is contained in the both sides of left part above the pedestal.Bearing frame 15 has a plurality of, is the shape of a hoof, and side-by-side alignment is installed in the right part above the pedestal; In by a plurality of inner chambers that are the rectangle that shape of a hoof bearing frame 15 consists of, the left side installation side is to positioning beam 43, and the right side installation side is to uniform distributed pressure loader 67, and top uniform distributed pressure loader 16 is installed on top, and the bottom surface is installed and is used for model backing plate 63 in place.
Described bearing frame 15 adopts the cast steel material manufacturing, concrete structure such as Fig. 2, Fig. 4 and shown in Figure 5, the outside on four limits all is designed with 4 sidepiece lightening holes 13 about thereon, top design has 4 lightening hole 13-1, and be used for lifting at 1 bolt hole 13-2 of bearing frame 15 top center Position Design, the two ends of bottom are processed with respectively 2 through holes and 1 screw, and described through hole is used for passing fixedly bearing frame of screw, and described screw is used for installing the bolt of leveling bearing frame.On four angles of bearing frame 15, respectively be processed with 1 through hole, be used for passing connecting screw rod, connect bearing frame.Described bearing frame 15 has four, and their side-by-side alignment are fixed on the bearing frame base plate 34 by M30 * 130 hex bolts 33, and by 32 leveling of leveling bolt.
Described top uniform distributed pressure loader 16 can adopt 6 top uniform distributed pressure loader, side direction uniform distributed pressure loader 67 can adopt 10 side direction uniform distributed pressure loader, and rear portion uniform distributed pressure loader 19 can adopt 15 rear portion uniform distributed pressure loader.The vertical load of device is to realize the top hierarchical loading by 4 groups 6 top uniform distributed pressure loader, and confined pressure is to realize that by 4 groups 10 side direction uniform distributed pressure loader and 1 group 15 rear portion uniform distributed pressure loader uniform confined pressure loads.
Described pedestal comprises support of scooter base plate 1, cylinder support fixed mount 3, support of scooter 4, cylinder support 6, model slide plate 11 in place, the model fixed head 12 in place of arranging from bottom to top.Cylinder support fixed mount 3 usefulness M16 * 45 hex bolts 2 are fixed on the support of scooter base plate 1, and cylinder support 4 is bolted on cylinder support fixed mount 3; At support of scooter base plate 1 support of scooter 4 is installed, at support of scooter 4 model slide plate 11 in place is installed, at model slide plate 11 in place model fixed head 12 in place is installed.
Described model slide plate 11 in place is contained in top (Fig. 1, Fig. 4) of slide plate bearing support 4, and this slide plate bearing support is fixed on the slide plate bearing support base plate 1, and is fixed together with the front end of bearing frame 15.
Described support of scooter 4 is steel construction piece as shown in Figure 1, and its sidepiece has 4 perforation 4-1 that play the loss of weight effect.
The structure of described model advance and retreat oil cylinder part in place comprises two model advance and retreat oil cylinders 10 in place, cylinder support fixed mount 3, cylinder support 6 as shown in Figure 1 and Figure 4.Model advance and retreat oil cylinder 10 in place is the standard component engineering cylinder, and for example can adopt model is the standard component engineering cylinder of HSGL-63/36-1230-1321 type.Each model advance and retreat oil cylinder 10 in place is supported by two cylinder supports 6, and each cylinder support 6 is installed in the both sides of slide plate bearing support 4 by cylinder support fixed mount 3, and by bearing pin lining 7, bearing pin 8, sell 9(4 * 40) link together.
Described cylinder support 6 is steel construction piece, and its structure such as Figure 17, Figure 18 and shown in Figure 19 are welded by two gusset 6-5 by a base plate 6-2 and two surface plate 6-1, respectively process 1 through hole 6-3 on surface plate 6-1, and it act as the latch nail; Be processed with 4 bolt hole 6-4 at base plate 6-2, be used for cylinder support 6 is fixed on cylinder support fixed mount 3.
Described lateral register beam 43 is steel construction piece, is formed by the Q235 Plate Welding.Referring to Fig. 6 and Fig. 7, up and down two ends at the lateral register beam, each processes two through holes, be used for passing screw and fix this part, its version has reduced the weight of structure to a great extent, and can play the effect of lateral Displacement, simultaneously, lateral register beam 43 and the spatial altitude of side direction uniform distributed pressure loader 67 and the position consistency of fixing threaded hole can make things convenient for from now on to replace the lateral register beam with the side direction uniform distributed pressure loader.At lateral register beam 43 side direction force transmitting board 44 is housed, is used for better transmitting sidepiece pressure.
Described rear loading plate 20 is fixed together by rear loading plate set bolt 22 and the 4th bearing frame 15, and setscrew nut is installed in the middle of the screw rod.
The structure of described model backing plate 63 in place such as Fig. 8 and shown in Figure 9 respectively process 1 screw hole 63-1 on its four angles, are used for installing lifting bolt and lift by crane this part; 13 through hole 63-2 that are arranged symmetrically with play the loss of weight effect; The surface is upper thereon is provided with 8 groove 63-3 along long side direction, and short side direction is provided with 4 grooves, and groove storage calcium-base grease helps the power of reducing friction; 8 counterbore 63-4 that two rows are arranged symmetrically with are used for passing socket head cap screw and fix this part.
The structure of described slide plate location-plate 23 be welded by a vertical plate 23-3 and a transverse plate 23-2, and a side is processed with 3 bolt hole 23-1 on transverse plate 23-2 as shown in Figure 10 and Figure 11.
The structure of described compact heap 52 such as Figure 12 and shown in Figure 13 process after employing Q235 material forges.
Described bolster 55 is fixed on the left side of bearing frame by 6 hex screws, compact heap 52 is installed on the bolster 55, in the inner of compact heap 52 holddown spring 53 is installed, in the outer end of compact heap thrust ball bearing 50(51217 is installed) and gland nut 49, be separately installed with two handles 51 at gland nut and compact heap.After model was in place, the constraint door-plate cut out, and rotates the handle 51 on the compact heap, makes compact heap turn clockwise 90 °, and compact heap contacts with compact heap limiting plate 66, and the handle that rotatably compresses on the nut makes gland nut pass through thrust ball bearing 50 compression compact heaps.When opening fast the constraint door-plate, rotatably compress nut by the handle inhour, compact heap leaves the constraint door-plate under the tension force of holddown spring 53 promotes, while compact heap counter-clockwise half-twist under Gravitative Loads, and pulling door handle 64 can be opened fast.
The structure of described constraint door-plate bearing 56 such as Figure 14 and Figure 15 and shown in Figure 16 are welded by gusset 56-3 by a base plate 56-1 and 2 perpendicular plate 56-5; Be symmetrily processed with 8 bolt hole 56-2 at base plate 56-1, be used for to retrain door-plate bearing 56 and be fixed on bearing frame 15; Respectively be processed with 1 through hole 56-4 on perpendicular plate 56-5, it act as and passes bearing pin.
Main frame of the present invention is rule and the construction anchor (bolt) hole according to the requirement that foundation location is installed suitable position in testing laboratory first, cleans all parts, removes burr, iron filings, non-machined surface brush rust protection paint, and machine work face is coated with machine oil; Again bearing frame base plate, slide plate bearing support base plate, rear loading plate base plate are fixed on the foot bolt according to drawing requirement; Then adjust level, guarantee on the base plate plane at grade, use cement below all base plates and fill and tamp.
The step of the installation method of main frame of the present invention is as follows:
1. rule and the construction anchor (bolt) hole according to requirement suitable position in testing laboratory of main frame installation foundation drawing.
According to the drawing requirement pre-embedded anchoring bolts.Clean all parts, remove burr, iron filings, non-machined surface brush rust protection paint, machine work face is coated with machine oil.Support of scooter base plate 1, bearing frame base plate 34, rear loading plate base plate 35 are fixed on 2 lower margin hex bolts M16 * 45 according to drawing requirement.Note during installation: mountedly should adjust level, and will guarantee the plane at grade, use cement below all base plates and fill and tamp.
2. near an end of rear loading plate base plate 35 first bearing frame 15 is installed at bearing frame base plate 34.
With hoisting device first bearing frame 15 is lifted to bearing frame base plate 34, align mounting hole and symmetrical center line, fixing with hex bolts 36 with the T-shaped groove of two M24 * 130.Simultaneously, the hex bolts 32 of M30 * 115 of respectively screwing in the screw of four M30 on bearing frame base plate 34, the hex bolts 33 of M30 * 130 of respectively screwing on again about then, be used for adjusting first bearing frame 15 perpendicular to level.Note during installation: the one side of counterbore is arranged forward on 15 4 angles of first bearing frame, the left-right symmetric center line should overlap with the symmetrical center line of bearing frame base plate 34 in the vertical direction, the inner chamber baseplane is parallel all around, guarantees that simultaneously large plane, both sides is vertical with plane on the base plate.
3. at mounted first bearing frame 15 four bearing frame coupling bolts 14 are installed, the major part of this bolt sinks in the counterbore of mounting hole, fixes with nut in first bearing frame 15 back.At the inner chamber end face of mounted first bearing frame 15 one 6 uniform distributed pressure loader is installed, one 10 uniform distributed pressure loader is installed on the right of inner chamber (seeing from front to back).Note during installation: all around all should symmetrical the installing of uniform distributed pressure loader, and make tubing sub near the upper right corner of inner chamber, the large plane of first bearing frame 15 can not be protruded in front and back.In the left side of first bearing frame 15 inner chambers with hexagon socket head cap screw 37 fixation side of 4 M16 * 40 to positioning beam 43.All around all should symmetrically installing of lateral register beam 43, and the large plane of first bearing frame 15 can not be protruded in front and back.
According to from rear (bearing frame base plate 34 is near an end of rear loading plate base plate 35) order forward other bearing frame 15 and uniform distributed pressure loader being installed successively, installation method is ditto described.
After four bearing frames 15 install, the baseplane of bearing frame inner chamber should be parallel, symmetrical and at grade, should be on same facade on lateral register beam 43 and the side direction force transmitting board 44 large planes that install in the inner chamber left side, sidepiece uniform distributed pressure loader 67 is installed on the inner chamber right side, at the top of bearing frame inner chamber top uniform distributed pressure loader 16 is installed; Top force transmitting board 17 is installed below top uniform distributed pressure loader 16; Rear portion uniform distributed pressure loader 19 and rear end force transmitting board 18 are installed at bearing frame inner chamber rear portion.
4. installation model backing plate 63 in place below mounted four bearing frame 15 inner chambers.
Note during installation: model backing plate in place 63 should about all should symmetrically install, upper plane should guarantee level all around, its symmetrical center line should be alignd with the symmetrical center line of four bearing frame 15 inner chambers.
5. at support of scooter base plate 1 slide plate bearing support 4 is installed.
Use first the hex bolts 31 of 4 M16 * 45 that the rear end of slide plate bearing support 4 and the large plane of front end of bearing frame 15 are fixed together, use again the hex bolts 31 of 8 M16 * 45 that slide plate bearing support 4 is fixed on the support of scooter base plate 1.Note during installation: slide plate bearing support 4 answers left-right symmetric to install, its symmetrical center line should be alignd with the symmetrical center line of the model backing plate 63 in place of installing below bearing frame 15 inner chambers, upper plane should guarantee level all around, and the upper plane of the upper plane of slide plate bearing support 4 and model backing plate 63 in place should be at grade.
6. in the left end both sides of slide plate bearing support 4, the symmetrical cylinder support fixed mount 3 of installing uses respectively the hex bolts 31 of 4 M16 * 45 to be fixed on the support of scooter base plate 1.Model slide plate 11 in place is placed on the slide plate bearing support 4, has gusset one to face down, wide end subtend bearing frame 15.Use respectively the hexagon socket head cap screw 27 of 4 M12 * 25 to fix a cylinder support 6 above both sides below model slide plate 11 wide ends in place and two cylinder support fixed mounts 3.Two cylinder support 6 amongs in model slide plate in place 11 both sides are installed a model advance and retreat oil cylinder 10 in place.The bottom of model advance and retreat oil cylinder 10 in place is installed in the left end of model slide plate in place, and piston rod is installed in right-hand member (the wide end of model slide plate in place), uses respectively the split pin 9 of bearing pin 8, bearing pin lining 7 and 4 * 40 fixing.At model slide plate 11 in place model fixed head 12 in place is installed, fixing with the socket head cap screw 5 of 6 M12 * 30.Note during installation: the bossing of model fixed head 12 in place upwards, left.
7. slide plate location-plate 23 is installed on large plane in the left side of rear loading plate 20.On the large plane of rear loading plate 20, slide plate location-plate 23 above, by the hex bolts 24 of rear loading plate set bolt 22 and M16 * 55 15 rear portion uniform distributed pressure loader 19 is installed respectively, this uniform distributed pressure loader left-right symmetric, its symmetrical center line should overlap with the symmetrical center line of rear loading plate 20.Loading plate limiting plate 70 after the two ends of rear loading plate 20 base plates are respectively installed one, use respectively the T-shaped groove of 2 M24 * 130 to fix with bolt 68, M24D nut 69 and packing ring with the T-shaped groove of bolt 36 and M24 * 200, two ends at 10 roller bearings 30, each installs a rolling bearing, divides two groups and is installed on the bearing bridge 26; By M24 nut 25 T-shaped frid 29 and 6005 type rolling bearings 28 are installed at rear loading plate 20 base plates in addition.
8. the rear loading plate 20 that with hoisting device uniform distributed pressure loader and slide plate location-plate 23 will be installed is sling, and two groups of bearing bridge 26 with roller bearing 30 are installed in rear loading plate 20 bottom surfaces, and is fixing with the hexagon socket head cap screw 27 of 8 M12 * 25.The rear loading plate 20 that installs roller bearing 30 and roller bearing 30 supports is lifted on rear loading plate 20 base plates, have uniform distributed pressure loader one facing to bearing frame 15.
9. after loading plate 20 set bolts after 6 being passed the mounting hole of rear loading plate 20,2 hexagonal nuts 21 of on each bolt, screwing on respectively, and be screwed on the first left bearing frame 15.Adjust the position of set bolt, rear loading plate 20 is in after the plumbness more respectively with two hexagonal nut 21 clamping screws and fixing afterwards loading plate 20.
10. by M16 * 50 hex bolts 54 back shafts 55 are installed on the one side near first bearing frame 15 of slide plate bearing support base plate 15 1 sides, gland nut 49 and compact heap 52 and Compress Spring 53 are installed on the bolster 55; Constraint door-plate bearing 56 parts are being installed near the another side of first bearing frame 15 of slide plate bearing support base plate 15 1 sides, to retrain door-plate bearing 56 by M16 * 50 hex bolts 57 and be fixed on first bearing frame 15, constraint door-plate bearing 56 parts also comprise 51308 type thrust ball bearings 58, constraint door bolt axle 59, circlip for shaft 60.Mounting handle 51 on gland nut 49 and compact heap 52, by M8 * 16 slotted countersunk flat head screws 41 door trim panels 40 is installed in constraint door-plate 42 fronts, by M16 * 50 hexagon socket head cap screws 39 constraint baffle plate 38 is installed in constraint door-plate 42 back, then by M16 * 30 hexagon socket head cap screws 65 compact heap limiting plate 66 and door handles 64 are installed in front, door handle 64 is by hexagon socket head cap screw 46(M16 * 30), door handle standing screw 47, M16 hexagonal nut 48 be fixed on the constraint baffle plate 38.
11. to the protection of spraying paint of the non-machined surface of main frame.
12. the connection of hydraulic system and operation:
The connection of hydraulic system:, with high-pressure hose hydraulic pressure regulator is connected the needs when tubing length should satisfy the rotation of framework two-way horizontal and facade rotation with the tubing sub of drawing of uniform distributed pressure loader referring to Figure 20.The corresponding relation of each road of voltage stabilizer and each uniform distributed pressure loader is wanted accurately, and hydraulic oil and pipeline will clean, oil circuit connects firm, ne-leakage.
The hydraulic system exhaust: the operation hydraulic pressure regulator, make the piston total travel to-and-fro movement 3～5 times of all loaders, all pistons are all retracted in the loader cylinder.
The operation hydraulic pressure regulator makes model advance and retreat oil cylinder 10 piston rods in place retract to the end, and pulling model slide plate 11 in place and model fixed head 12 in place move to beyond the bearing frame 15 together, and valve-off makes model slide plate 11 in place temporarily be in steady state (SS).The test model 45 of 400 * 600 * 1000mm of making is located on the model fixed head 12 in place.The locating piece of test model left end and model fixed head left end in place projection pushes against, and aligns with model fixed head in place in two sides of test model.
One group of the corresponding model of operation hydraulic pressure regulator advance and retreat oil cylinder 10 in place slowly stretches out model advance and retreat cylinder piston rod in place, promotes model slide plate 11 in place and also is with movable model fixed head in place, test model to move to together in bearing frame 15 inner chambers.
(patent No.: ZL02213775.0) one group stretches out side direction uniform distributed pressure loader 12 pistons, and promotes side direction force transmitting board and lateral register beam that model pushes against the model another side operation hydraulic pressure regulator respective side to uniform distributed pressure loader.
(patent No.: ZL02213775.0) four groups stretch out top uniform distributed pressure loader 8 pistons, and push against model top force transmitting board and model end face the corresponding top of operation hydraulic pressure regulator uniform distributed pressure loader.
(patent No.: ZL02213775.0) one group stretches out rear portion uniform distributed pressure loader 20 pistons, and pushes against model rear end force transmitting board and model back the corresponding rear portion of operation hydraulic pressure regulator uniform distributed pressure loader.
Load test.
According to the test needs, retrain the unlatching of door-plate 42 or close.
Record test model macroscopic failure phenomenon is taken out model, model is destroyed form be described, take pictures, record a video.
In above-described embodiment, the specification page or leaf of used bolt, screw can be decided according to actual conditions.
Claims (10)
1. rock burst model test apparatus, formed by main frame and hydraulic control system, it is characterized in that main frame mainly is comprised of pedestal, model advance and retreat oil cylinder in place (10), bearing frame (15) and constraint door-plate (42) part, described model advance and retreat oil cylinder in place has two, and symmetry is contained in the both sides of left part above the pedestal; Bearing frame (15) has a plurality of, and side-by-side alignment is contained in the right part above the pedestal; In by a plurality of inner chambers that are the rectangle that shape of a hoof bearing frame (15) consists of, the left side installation side is to positioning beam (43), the right side installation side is to uniform distributed pressure loader (67), and top uniform distributed pressure loader (16) is installed on top, and the bottom surface is installed and is used for model backing plate (63) in place; At first bearing frame constraint door-plate (42) part is installed.
2. rock burst model test apparatus as claimed in claim 1, it is characterized in that: described bearing frame (15) is equipped with several sidepiece lightening holes in the outside on its limit, left and right both sides; Be provided with several lightening holes at its top, and be provided with 1 bolt hole that is used for lifting in its top center position; Two ends in its bottom are processed with respectively 2 through holes and 1 screw, and described through hole is used for passing fixedly bearing frame of screw, and described screw is used for installing the bolt of leveling bearing frame; Respectively be processed with 1 through hole on its four angles, the bearing frame coupling bolt connects bearing frame by this through hole.
3. rock burst model test apparatus as claimed in claim 1 is characterized in that described pedestal comprises support of scooter base plate (1), cylinder support fixed mount (3), support of scooter (4), cylinder support (6), model slide plate in place (11), the model fixed head in place (12) of arranging from bottom to top.
4. rock burst model test apparatus as claimed in claim 1 is characterized in that described slide plate bearing support (4) is steel construction piece, and its sidepiece has 4 perforation that play the loss of weight effect.
5. rock burst model test apparatus as claimed in claim 1, it is characterized in that: described model advance and retreat oil cylinder in place (10) is the standard component engineering cylinder, each model advance and retreat oil cylinder in place is supported by two cylinder supports (6), each cylinder support (6) is installed in the both sides of slide plate bearing support 4 left ends by cylinder support fixed mount (3), and links together by bearing pin lining, bearing pin, pin.
6. rock burst model test apparatus as claimed in claim 1, it is characterized in that described constraint door-plate (42) part, it is the sidepiece in first bearing frame (15), by constraint door-plate bearing (56) and constraint door bolt axle (59) constraint door-plate (42) is installed, with hexagon socket head cap screw compact heap limiting plate (66) and door handle (64) are installed in constraint door-plate (42) front, be screwed door trim panels (40) in constraint door-plate (42) front, with hexagon socket head cap screw constraint baffle plate (38) be installed in constraint door-plate (42) back.
7. rock burst model test apparatus as claimed in claim 6, it is characterized in that described constraint door-plate (42) part also comprises: the other side in first bearing frame (15), by hex bolts compact heap (52) is installed, the installed inside of compact heap has holddown spring (53), makes compact heap (52) mobile before and after compact heap back shaft (55) is upper; Thrust ball bearing (50), gland nut (49) are installed in the outside of compact heap (52) and are used for the compact heap limiting plate (66) of restriction compact heap (52) rotational angle; Be separately installed with two handles (51) at gland nut (49) and compact heap, gland nut (49) and compact heap (52) are rotated at compact heap back shaft (55); Constraint door-plate (42) cuts out after model block is in place, and is fixing by compact heap (52), gland nut (49) and compact heap limiting plate (66).
8. rock burst model test apparatus as claimed in claim 7 is characterized in that described compact heap (52) and gland nut (49) link together by compact heap back shaft (55) the other side with first bearing frame (15).
9. rock burst simulation test device as claimed in claim 1 is characterized in that described lateral register beam (43) and the spatial altitude of side direction uniform distributed pressure loader (67) and the position consistency of fixing threaded hole.
10. the purposes of the described rock burst model test apparatus of arbitrary claim in the claim 1 to 9, it is characterized in that the rock burst simulation test device can carry out copying and reproducing of rock burst indoor, carry out mechanism, process, the condition that rock burst produces and application during effectively control technology is studied by simulation, wherein the model block is of a size of 100 * 60 * 40cm, adopt self-equilibrating to add uninstalling system, realize the simulation of large scale model rock burst, further reduced the obvious size effect that causes because specimen size is little; Under described uniform distributed pressure loader and hydraulic control system effect, realize the model block pressurization and unloading of a plurality of modes.
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| CN104155429A (en) * | 2014-08-15 | 2014-11-19 | 安徽理工大学 | Deep hole blasting analog stimulation experiment apparatus |
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| CN114002070A (en) * | 2021-09-26 | 2022-02-01 | 中国矿业大学 | Experimental method and device for fault activation induced rock burst and rock burst |
| CN114002070B (en) * | 2021-09-26 | 2023-08-25 | 中国矿业大学 | Experimental method and device for inducing rock burst and rock burst through fault activation |
| CN115376393A (en) * | 2022-09-01 | 2022-11-22 | 西南石油大学 | Complex variable-rigidity three-dimensional model boundary control plate |
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| CN115561083A (en) * | 2022-11-10 | 2023-01-03 | 中国矿业大学(北京) | Deep rock mass dynamic performance test system and method |
| CN115561083B (en) * | 2022-11-10 | 2023-03-03 | 中国矿业大学(北京) | Deep rock mass dynamic performance test system and method |
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