CN113916672A - Pressure test device is strutted to surrounding rock in grotto - Google Patents
Pressure test device is strutted to surrounding rock in grotto Download PDFInfo
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- CN113916672A CN113916672A CN202111181338.8A CN202111181338A CN113916672A CN 113916672 A CN113916672 A CN 113916672A CN 202111181338 A CN202111181338 A CN 202111181338A CN 113916672 A CN113916672 A CN 113916672A
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- 238000012360 testing method Methods 0.000 title claims abstract description 69
- 239000011435 rock Substances 0.000 title claims abstract description 66
- 238000010276 construction Methods 0.000 claims abstract description 20
- 238000005266 casting Methods 0.000 claims abstract description 10
- 238000009434 installation Methods 0.000 claims description 52
- 238000003825 pressing Methods 0.000 claims description 30
- 238000001125 extrusion Methods 0.000 claims description 7
- 230000006978 adaptation Effects 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims description 2
- 239000000725 suspension Substances 0.000 claims 1
- 238000004088 simulation Methods 0.000 description 9
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 4
- 235000017491 Bambusa tulda Nutrition 0.000 description 4
- 241001330002 Bambuseae Species 0.000 description 4
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 4
- 239000011425 bamboo Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000013011 mating Effects 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000003079 width control Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 238000011897 real-time detection Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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Abstract
The utility model relates to a pressure test device is strutted to wall rock in hole, including the wall rock analogue test case, supporting construction, the mounting bracket with execute the casting die, the hole room has been seted up on the wall rock analogue test case, supporting construction sets up in the hole room and supports the hole room roof, the wall rock analogue test case with execute the equal fixed mounting of casting die on the mounting bracket, and execute the casting die and be located wall rock analogue test case top, supporting construction includes the base, the bracing piece, supporting component and the driving piece that is used for driving the bracing piece to reciprocate, the driving piece is installed on the base, the one end of bracing piece is installed on the driving piece, the other end and the supporting component fixed connection of bracing piece. The utility model provides a pressure test device is strutted to cavern surrounding rock can adjust the bracing piece through the driving piece according to the size of cavern and reciprocate when using, and then adjusts the supporting component and reciprocates for the supporting component can support on the roof of equidimension cavern not. The application range of the pressure test device for the surrounding rock support of the grotto is wide, and the practicability is good.
Description
Technical Field
The application relates to the field of surrounding rock support of grottos, in particular to a pressure test device for surrounding rock support of grottos.
Background
The cavern surrounding rock is a rock-soil body in a certain range around the underground cavern, which is deformed and redistributed in stress due to underground local excavation, or a rock-soil body around the cavern, the stability of which is influenced. The large underground cavern of the hydroelectric engineering is one of the most complex system engineering, and the stability of surrounding rock in the construction period is always a difficulty and a hot point concerned in the fields of rock mechanics and engineering and is also a problem that engineering workers must pay high attention to. Due to the difference of geological conditions, rock burst, large soft rock deformation and other heavy engineering geological problems are easy to occur in the construction of the surrounding rocks of the caverns, and the safety, progress and quality of the underground cavern construction are directly related. In construction, a supporting structure is generally built to support surrounding rocks of a cavern while excavating the cavern so as to ensure the safety of construction. The problem that probably meets during the construction can be found in advance through carrying out the simulated pressure test to the surrounding rock support of cavern through test device before the construction to make the construction scheme of answering. The grotto surrounding rock support pressure test device among the prior art includes the surrounding rock analogue test case usually, is used for exerting the casting die and the supporting construction of pressure to the surrounding rock analogue test case, has seted up the grotto on the surrounding rock analogue test case, and supporting construction sets up in the grotto and supports the grotto roof. Supporting construction includes base, bracing piece and backup pad, and base fixed mounting is on the diapire of cavern, and the one end of bracing piece is fixed on the base, and the other end at the bracing piece is fixed to the backup pad, and the backup pad supports in cavern roof department.
The problem that the pressure test device is strutted to room surrounding rock among the above-mentioned prior art exists is that its supporting construction is fixed design, can't adjust, and application scope is little, the practicality is poor.
Disclosure of Invention
In order to improve the technical problem that application scope that pressure test device was strutted to surrounding rock in the cavern among the prior art exists is little, the practicality is poor, this application provides a pressure test device is strutted to surrounding rock in the cavern.
The application provides a pressure test device is strutted to grotto surrounding rock adopts following technical scheme:
the utility model provides a pressure test device is strutted to wall rock in hole, includes wall rock analogue test case, supporting construction, mounting bracket and is used for exerting the casting die of exerting pressure to wall rock analogue test case, has seted up the hole room on the wall rock analogue test case, and supporting construction sets up in the hole room and supports the hole room roof, wall rock analogue test case with exert the equal fixed mounting of casting die on the mounting bracket, and exert the casting die and be located wall rock analogue test case top, supporting construction includes base, bracing piece, supporting component and is used for driving the driving piece that the bracing piece reciprocated, the driving piece is installed on the base, the one end of bracing piece is installed on the driving piece, the other end and the supporting component fixed connection of bracing piece.
Through adopting above-mentioned technical scheme, the bracing piece can be adjusted through the driving piece according to the size of cavern and reciprocate to the pressure test device is strutted to cavern surrounding rock of this application when using, and then adjusts supporting component and reciprocates for supporting component can support on the roof of equidimension cavern not. The application range of the pressure test device for the surrounding rock support of the grotto is wide, and the practicability is good.
Preferably, the fixed spliced pole that is provided with on the base, the one end of keeping away from the base of spliced pole has been seted up ring groove, and the driving piece is rotatory sleeve, and the fixed annular rand that is provided with in rotatory sleeve one end, annular rand rotate to be connected in ring groove, and rotatory sleeve circumference inner wall is provided with the internal thread, be provided with on the bracing piece with interior screw-thread fit's external screw thread, the one end threaded connection of keeping away from supporting component of bracing piece is in rotatory sleeve.
Through adopting above-mentioned technical scheme, the bracing piece is adjusted to the manual rotatory sleeve that rotates of accessible reciprocates, and it is very convenient to use.
Preferably, the bracing piece with supporting component fixed connection's one end still fixed be provided with pressure sensor, pressure sensor contradicts with supporting component, pressure sensor is connected with external equipment electricity and is used for transmitting pressure signal to external equipment in.
Through adopting above-mentioned technical scheme, the pressure that can real-time detection bracing piece received.
Preferably, the supporting component comprises a first supporting plate, a second supporting plate, a first adjusting supporting plate, a second adjusting supporting plate and a fixing plate, the fixing plate is fixedly connected between the first supporting plate and the second supporting plate, the first supporting plate and the second supporting plate are arranged at intervals in parallel, the first adjusting supporting plate and the second adjusting supporting plate are both installed between the first supporting plate and the second supporting plate, guide chutes are formed in the first supporting plate and the second supporting plate, guide sliding blocks matched with the guide chutes are fixedly arranged on the first adjusting supporting plate and the second adjusting supporting plate respectively, and the first adjusting supporting plate and the second adjusting supporting plate can move between the first supporting plate and the second supporting plate.
Through adopting above-mentioned technical scheme, can realize supporting component's width control to be convenient for carry out the pressure test of the supporting component of different widths.
Preferably, the roof of hole room is the arc, first backup pad, second backup pad, first regulation backup pad and second regulation backup pad be with the arc platelike structure of the roof adaptation of hole room, the direction spout is the arc wall, the direction slider be with the arc wall direction remove complex arc slider, first backup pad with set up the direction spout concentric circles setting above that, the second backup pad with set up the direction spout concentric circles setting above that.
Through adopting above-mentioned technical scheme, can realize supporting component's width control to be convenient for carry out the pressure test of the supporting component of different widths.
Preferably, a first mounting space is formed in the first support plate, a second mounting space is formed in the second support plate, a driving shaft is rotatably connected between the first support plate and the second support plate, one end of the driving shaft passes through the first mounting space and extends outwards to form an overhanging end, the other end of the driving shaft extends into the second mounting space, a first driving gear and a second driving gear are fixedly mounted on the driving shaft, the first driving gear is located in the first mounting space, the second driving gear is located in the second mounting space, a driven gear is rotatably mounted in the first mounting space and is meshed with the first driving gear, a guide sliding block on the first adjusting support plate is mounted in a guide sliding groove on the first support plate, a guide sliding block on the second adjusting support plate is mounted in a guide sliding groove on the second support plate, and an arc-shaped rack is fixedly mounted on the guide sliding block, an arc-shaped rack of a guide sliding block on the first adjusting supporting plate extends into the first installation space and is meshed with the driven gear; the arc-shaped rack of the guide sliding block on the second adjusting supporting plate extends into the second mounting space and is meshed with the second driving gear.
Through adopting above-mentioned technical scheme, can realize first regulation backup pad and second regulation backup pad when remove in opposite directions or move back on the back mutually.
Preferably, the pressing piece is fixed through an extrusion fixing component, the extrusion fixing component comprises a circular tube-shaped installation barrel, the installation barrel is fixedly installed on the installation frame, the axis of the installation barrel extends in the vertical direction, an annular installation space is formed inside the barrel wall of the installation barrel, a driving shaft installation hole extending in the vertical direction is formed in the axial end face of the installation barrel, a driving shaft is rotatably installed in the driving shaft installation hole, one end of the driving shaft is located outside the installation barrel to form an extending end, the other end of the driving shaft extends into the annular installation space, a driving straight gear and a driving bevel gear are further fixedly installed on the driving shaft, the driving straight gear and the driving bevel gear are located in the annular installation space, and the driving bevel gear is located at the end of the driving shaft; the inner side cylinder wall of the annular installation space is also rotatably sleeved with an annular gear, and the annular gear is meshed with the driving straight gear; a driven shaft which is arranged in parallel with the driving shaft is rotatably arranged in the annular mounting space, the driven shaft and the driving shaft are uniformly arranged at intervals in the circumferential direction of the mounting cylinder, a driven straight gear and a driven bevel gear are fixedly arranged on the driven shaft, the driven bevel gear is positioned at the end part of the driven shaft, and the driven straight gear is meshed with the annular gear; the annular installation space is also rotatably provided with matched bevel gears, the number of the matched bevel gears is equal to the sum of the number of the driving bevel gears and the number of the driven bevel gears, the driving bevel gears and the driven bevel gears are respectively meshed with one matched bevel gear, each matched bevel gear is respectively rotatably installed in the annular installation space through a jacking rod, through holes for the jacking rod to pass through are respectively formed in the cylinder walls on the two radial sides of the annular installation space, the jacking rods are arranged along the radial direction of the installation cylinder, the two ends of the jacking rod are supported in the two through holes, each jacking rod comprises a threaded section and a rotation stopping matching section, external threads are arranged on the threaded section, a threaded hole in threaded matching with the threaded section is formed in the center of the matched bevel gear, the matched bevel gears are in threaded connection with the threaded section, a stop block protruding outwards is arranged on the rotation stopping matching section, and slots matched with the stop blocks are formed in the through holes in the cylinder walls on the outer sides of the annular installation space, the stop block is inserted in the slot, and the end part of the thread section is fixedly provided with a top pressing plate for pressing the pressing piece.
By adopting the technical scheme, the rotation of the driving shaft can simultaneously control the rotation of each driven shaft, so as to simultaneously control the rotation of each matched bevel gear, and each matched bevel gear rotates to drive each jacking rod to simultaneously move along the radial direction of the mounting cylinder to jack and fix the pressing piece, so that the pressing piece is very convenient to fix and mount; moreover, pressing pieces with different sizes can be fixed, and corresponding pressing pieces can be selected for fixing according to test requirements.
Preferably, the overhanging end of the driving shaft is also fixedly provided with a turntable which is convenient for rotating the driving shaft.
Through adopting above-mentioned technical scheme, conveniently rotate the drive shaft.
Preferably, the number of the caverns is at least two, and the size of each cavern is different.
By adopting the technical scheme, whether the size of the cavern changes the stability of the supporting structure under the action of the same pressure can be observed, and the stroke contrast test increases the accuracy of the test.
Drawings
Fig. 1 is a schematic perspective view of a visual angle of a pressure test device for supporting surrounding rocks in a cavern according to an embodiment of the application;
FIG. 2 is a schematic perspective view of another view angle of the device for testing the supporting pressure of the surrounding rock of the cavern in the embodiment of the application;
FIG. 3 is a schematic diagram of a supporting structure of the pressure test device for supporting the surrounding rock of the cavern in the embodiment of the application;
fig. 4 is a schematic view of the support structure of fig. 3 showing the internal structure of the first support plate;
fig. 5 is a schematic view of the support structure of fig. 3 showing the internal structure of a second support plate;
FIG. 6 is a schematic structural diagram of a pressing and fixing assembly of the grotto surrounding rock support pressure test device according to the embodiment of the application;
FIG. 7 is a top view of the compression fixation assembly of FIG. 6;
fig. 8 is a sectional view taken along line a-a in fig. 7.
Description of reference numerals: 1. a surrounding rock simulation test box; 11. a cavern; 2. a support structure; 21. a base; 211. connecting columns; 22. a support bar; 23. a support assembly; 231. a first support plate; 232. a second support plate; 233. a first adjusting support plate; 234. a second adjusting support plate; 235. a fixing plate; 236. a guide chute; 237. a guide slider; 238. a drive shaft; 239. a rotating wheel; 240. a first drive gear; 241. a second driving gear; 242. a driven gear; 24. rotating the sleeve; 25. a rectangular block; 3. a mounting frame; 31. a base plate; 32. a support leg; 33. a cross bar; 34. mounting a plate; 4. a hydraulic cylinder; 41. a telescopic rod; 42. pressing a plate; 5. extruding and fixing the assembly; 51. mounting the cylinder; 52. an annular mounting space; 53. a bearing; 54. a drive shaft; 55. a turntable; 56. a driving spur gear; 57. a drive bevel gear; 58. a ring gear; 59. a driven shaft; 60. a driven spur gear; 61. a driven bevel gear; 62. matching with a bevel gear; 63. a top pressure rod; 631. a threaded segment; 632. a rotation stopping matching section; 633. a stop block; 64. and a top pressing plate.
Detailed Description
The present application is described in further detail below with reference to the attached drawings.
Referring to fig. 1 and 2, the embodiment of the application discloses a pressure test device for surrounding rock support of a cavern, which comprises a surrounding rock simulation test box 1, a supporting structure 2, a mounting rack 3 and a pressing piece for applying pressure to the surrounding rock simulation test box 1. Two different size grottos 11 have been seted up on the country rock simulation test case 1, and the roof of grotto 11 is the arc, and supporting construction 2 is provided with two and is located two grottos 11 respectively and supports 11 roofs in the grotto. The surrounding rock simulation test box 1 and the pressing piece are both fixedly mounted on the mounting frame 3, and the pressing piece is located above the surrounding rock simulation test box 1. In this embodiment, the mounting frame 3 includes a bottom plate 31, a leg 32 fixed on the bottom plate 31, a cross bar 33 fixedly connected to the upper portion of the leg 32, and a mounting plate 34 fixedly connected between the two cross bars 33, wherein two mounting plates 34 are arranged at intervals. The surrounding rock simulation test box 1 is fixed on the bottom plate 31, two extrusion fixing components 5 are respectively and fixedly arranged on the two mounting plates 34, and two pressing components are arranged and respectively and fixedly arranged at the two extrusion fixing components 5. The pressing piece is a hydraulic cylinder 4, a pressing plate 42 is fixed at the end part of a telescopic rod 41 of the hydraulic cylinder 4, and the pressing plate 42 abuts against the top of the surrounding rock simulation test box 1.
Referring to fig. 3 to 5, the supporting structure 2 includes a base 21, a supporting rod 22, a supporting assembly 23, and a driving member for driving the supporting rod 22 to move up and down. The driving piece is installed on base 21, and the one end of bracing piece 22 is installed on the driving piece, and the other end and the supporting component 23 fixed connection of bracing piece 22. In this embodiment, a connection column 211 is fixedly disposed on the base 21, an annular clamping groove (not shown in the figure) is disposed at one end of the connection column 211, which is far away from the base 21, the driving member is a rotating sleeve 24, an annular clamping ring (not shown in the figure) is fixedly disposed at one end of the rotating sleeve 24, and the annular clamping ring is rotatably connected in the annular clamping groove. The inner wall of the circumference of the rotating sleeve 24 is provided with an internal thread, the supporting rod 22 is provided with an external thread matched with the internal thread, and one end of the supporting rod 22, which is far away from the supporting component 23, is connected in the rotating sleeve 24 in a threaded manner. One end of the support rod 22 fixedly connected with the support component 23 is further fixedly provided with a pressure sensor (not shown in the figure), the pressure sensor is abutted against the support component 23, and the pressure sensor is electrically connected with external equipment and used for transmitting a pressure signal to the external equipment. The pressure that pressure sensor received is looked over to staff's accessible external equipment size. In this embodiment, a rectangular block 25 with a rectangular cross section is fixedly disposed at one end of the support rod 22 fixedly connected to the support member 23, a mounting groove (not shown) is disposed on a side surface of the rectangular block 25 facing the support member 23, and the pressure sensor is fixedly mounted in the mounting groove.
With continued reference to fig. 3-5, the supporting assembly 23 includes a first supporting plate 231, a second supporting plate 232, a first adjusting supporting plate 233, a second adjusting supporting plate 234 and a fixing plate 235, the fixing plate 235 is fixedly connected between the first supporting plate 231 and the second supporting plate 232, the first supporting plate 231 and the second supporting plate 232 are arranged in parallel at intervals, the first adjusting supporting plate 233 and the second adjusting supporting plate 234 are both installed between the first supporting plate 231 and the second supporting plate 232, guide sliding grooves 236 are both formed on the first supporting plate 231 and the second supporting plate 232, guide sliding blocks 237 which are guided to move and cooperate with the guide sliding grooves 236 are respectively fixedly arranged on the first adjusting supporting plate 233 and the second adjusting supporting plate 234, and the first adjusting supporting plate 233 and the second adjusting supporting plate 234 can move between the first supporting plate 231 and the second supporting plate 232. In this embodiment, the first support plate 231, the second support plate 232, the first adjusting support plate 233 and the second adjusting support plate 234 are all arc-shaped plate-shaped structures adapted to the top wall of the cavity 11, the guiding sliding groove 236 is an arc-shaped groove, the guiding sliding block 237 is an arc-shaped sliding block movably matched with the arc-shaped groove in a guiding manner, the first support plate 231 is concentrically arranged with the guiding sliding groove 236 arranged thereon, and the second support plate 232 is concentrically arranged with the guiding sliding groove 236 arranged thereon.
With continued reference to fig. 3-5, a first installation space is provided inside the first support plate 231, a second installation space is provided inside the second support plate 232, a driving shaft 238 is further rotatably connected between the first support plate 231 and the second support plate 232, one end of the driving shaft 238 passes through the first installation space and extends outward to form an overhanging end, and the other end of the driving shaft 238 extends into the second installation space. A rotating wheel 239 convenient for rotating the driving shaft 238 is also fixedly arranged at the overhanging end of the driving shaft 238. The driving shaft 238 is further fixedly installed with a first driving gear 240 and a second driving gear 241, the first driving gear 240 is located in the first installation space, and the second driving gear 241 is located in the second installation space. A driven gear 242 is rotatably installed in the first installation space, and the driven gear 242 is engaged with the first driving gear 240. The guide slider 237 of the first adjustment support plate 233 is mounted in the guide slide groove 236 of the first support plate 231, and the guide slider 237 of the second adjustment support plate 234 is mounted in the guide slide groove 236 of the second support plate 232. The guide slider 237 is further fixedly provided with an arc-shaped rack, the arc-shaped rack of the guide slider 237 on the first adjusting support plate 233 extends into the first installation space and is engaged with the driven gear 242, and the arc-shaped rack of the guide slider 237 on the second adjusting support plate 234 extends into the second installation space and is engaged with the second driving gear 241. In use, rotation of wheel 239 enables first adjustment support plate 233 and second adjustment support plate 234 to move toward or away from each other simultaneously.
Referring to fig. 6 to 8, the compression fixing assembly 5 includes a circular tube-shaped mounting cylinder 51, and the mounting cylinder 51 is fixed to the mounting plate 34 with an axis of the mounting cylinder 51 extending in a vertical direction. Annular installation space 52 has been seted up to the section of thick bamboo wall inside of installation section of thick bamboo 51, and the drive shaft mounting hole that extends along vertical direction is seted up to the axial terminal surface of installation section of thick bamboo 51, and drive shaft mounting hole internal fixation has bearing 53, and drive shaft 54 is installed through bearing 53 rotation in the drive shaft mounting hole, and the one end of drive shaft 54 lies in installation section of thick bamboo 51 and forms overhanging end, and the other end of drive shaft 54 stretches into in the annular installation space 52. The outwardly extending end of the drive shaft 54 is also fixedly mounted with a turntable 55 for facilitating rotation of the drive shaft 54. A driving spur gear 56 and a driving bevel gear 57 are also fixedly mounted on the driving shaft 54, the driving spur gear 56 and the driving bevel gear 57 are located in the annular mounting space 52 and the driving bevel gear 57 is located at the end of the driving shaft 54. The inner side wall of the annular mounting space 52 is also rotatably sleeved with a ring gear 58, and the ring gear 58 is meshed with the driving spur gear 56.
With continued reference to fig. 6-8, a driven shaft 59 is rotatably mounted in the annular mounting space 52 in parallel with the drive shaft 54, the driven shaft 59 being spaced evenly from the drive shaft 54 in the circumferential direction of the mounting cylinder 51. The axial end face of the mounting cylinder 51 is further provided with driven shaft mounting holes extending along the vertical direction, the driven shaft mounting holes and the driven shafts 59 are arranged in a one-to-one correspondence mode, bearings are fixedly mounted in the driven shaft mounting holes, and one ends of the driven shafts 59 are fixedly mounted on inner rings of the bearings in the driven shaft mounting holes. The driven shaft 59 is fixedly provided with a driven spur gear 60 and a driven bevel gear 61, the driven bevel gear 61 is positioned at the end part of the driven shaft 59 far away from the driven shaft mounting hole, and the driven spur gear 60 is meshed with the ring gear 58. The annular mounting space 52 is also rotatably mounted with engaging bevel gears 62, and the number of the engaging bevel gears 62 is equal to the sum of the number of the driving bevel gears 57 and the driven bevel gears 61. The driving bevel gear 57 and the driven bevel gear 61 are respectively engaged with a mating bevel gear 62, and the mating bevel gears 62 are rotatably installed in the annular installation space 52 by pressing rods 63, respectively. Through holes for the top pressure rod 63 to pass through are respectively formed in the cylinder walls on the two radial sides of the annular mounting space 52, the top pressure rod 63 is arranged along the radial direction of the mounting cylinder 51, and the two ends of the top pressure rod 63 are supported in the two through holes. The top pressure rod 63 includes a threaded section 631 and a rotation stop engagement section 632. The threaded section 631 is provided with external threads, the center of the matching bevel gear 62 is provided with a threaded hole in threaded fit with the threaded section 631, the matching bevel gear 62 is in threaded connection with the threaded section 631, and the matching bevel gear 62 abuts against the inner side wall of the annular installation space 52. The end of the thread section 631 is further fixedly provided with a top pressure plate 64 for pressing the cylinder body of the hydraulic cylinder, and the top pressure plate 64 is provided with a top pressure surface which is matched and attached with the cylinder body of the hydraulic cylinder. The rotation stopping matching section 632 is provided with a stop block 633 protruding outwards, the wall of the through hole on the outer wall of the annular installation space 52 is provided with an insertion slot matched with the stop block 633, and the stop block 633 is inserted into the insertion slot. When the pressing piece fixing device is used, the driven shafts 59 can be controlled to rotate simultaneously by rotating the driving shaft 54, so that the matched bevel gears 62 are controlled to rotate simultaneously, the matched bevel gears 62 rotate to drive the jacking rods 63 to move along the radial direction of the mounting cylinder 51 to jack and fix the pressing piece, and the pressing piece is convenient to fix.
The implementation principle of the embodiment of the application is as follows: when the pressure test device for supporting the surrounding rocks of the cavern is used, two supporting structures 2 are respectively arranged in two caverns 11, and the rotary sleeve 24 is rotated to adjust the height of the supporting component 23 according to the size of the cavern 11, so that the supporting component 23 is attached to and supported on the top wall of the cavern 11; then, a pressing piece with corresponding pressure is selected according to test requirements, the hydraulic cylinder 4 is fixedly installed in the installation barrel 51 of the extrusion fixing assembly 5, then the hydraulic cylinder 4 is controlled to work, and the telescopic rod 41 of the hydraulic cylinder 4 extends outwards to drive the pressing plate 42 to press against the top of the surrounding rock simulation test box 1 for performing a pressure test.
When the pressure test device for the supporting of the surrounding rock of the cavern is used, the supporting rod 22 can be adjusted to move up and down through the driving piece according to the size of the cavern 11, and then the supporting component 23 is adjusted to move up and down, so that the supporting component 23 can be supported on the top walls of the caverns 11 with different sizes; the width adjustment of the supporting component 23 can be realized, so that the pressure tests of the supporting components 23 with different widths are facilitated; the pressing pieces can be tightly pressed and fixed by driving the top pressure rods 63 to move along the radial direction of the mounting cylinder 51, so that the pressing pieces are very convenient to fix and mount; the size of the cavity 11 can be observed under the action of the same pressure to change the stability of the supporting structure 2, and the stroke contrast test increases the accuracy of the test. The application range of the pressure test device for the surrounding rock support of the grotto is wide, and the practicability is good.
In other embodiments, the number of the cavities 11 can be selected according to the requirement.
In other embodiments, the drive member may be replaced by other conventional linear drive members, such as a power push rod.
The embodiments of the present invention are preferred embodiments of the present application, and the scope of protection of the present application is not limited by the embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a pressure test device is strutted to wall rock in hole, includes wall rock analogue test case (1), supporting structure (2), mounting bracket (3) and is used for exerting the casting die of pressure to wall rock analogue test case (1), has seted up hole room (11) on wall rock analogue test case (1), and supporting structure (2) set up in hole room (11) and support its characterized in that to hole room (11) roof: surrounding rock analogue test case (1) and the equal fixed mounting of casting die are on mounting bracket (3), and casting die is located surrounding rock analogue test case (1) top, and supporting construction (2) include base (21), bracing piece (22), supporting component (23) and are used for driving the driving piece that bracing piece (22) reciprocated, and the driving piece is installed on base (21), and the one end of bracing piece (22) is installed on the driving piece, the other end and supporting component (23) fixed connection of bracing piece (22).
2. The pressure test device for the chamber surrounding rock support according to claim 1, characterized in that: the fixed spliced pole (211) that is provided with on base (21), ring groove has been seted up to the one end of keeping away from base (21) of spliced pole (211), the driving piece is rotatory sleeve (24), the fixed annular rand that is provided with of one end of rotatory sleeve (24), the annular rand rotates to be connected in ring groove, the circumference inner wall of rotatory sleeve (24) is provided with the internal thread, be provided with on bracing piece (22) with interior screw-thread fit's external screw thread, the one end threaded connection of keeping away from supporting component (23) of bracing piece (22) is in rotatory sleeve (24).
3. The pressure test device for the chamber surrounding rock support according to claim 2, characterized in that: the one end with supporting component (23) fixed connection of bracing piece (22) still fixedly is provided with pressure sensor, and pressure sensor conflicts with supporting component (23), and pressure sensor is connected with external equipment electricity and is used for transmitting pressure signal to external equipment.
4. The pressure test device for the surrounding rock support of the grotto according to any one of claims 1-3, wherein: the supporting component (23) comprises a first supporting plate (231), a second supporting plate (232), a first adjusting supporting plate (233), a second adjusting supporting plate (234) and a fixing plate (235), fixed plate (235) fixed connection is between first backup pad (231) and second backup pad (232), first backup pad (231) and second backup pad (232) parallel interval set up, first regulation backup pad (233) and second regulation backup pad (234) are all installed between first backup pad (231) and second backup pad (232), guide chute (236) have all been seted up on first backup pad (231) and second backup pad (232), first regulation backup pad (233) and second regulation backup pad (234) are gone up and are fixed respectively be provided with and guide chute (236) direction removal complex guide slider (237), first regulation backup pad (233) and second regulation backup pad (234) can move between first backup pad (231) and second backup pad (232).
5. The pressure test device for supporting the surrounding rock of the cavern according to claim 4, wherein: the roof of hole room (11) is the arc, first backup pad (231), second backup pad (232), first regulation backup pad (233) and second regulation backup pad (234) are the arc platelike structure with the roof adaptation of hole room (11), direction spout (236) are the arc wall, direction slider (237) are for removing complex arc slider with the arc wall direction, first backup pad (231) set up with offering on it direction spout (236) concentric, second backup pad (232) set up with offering on it direction spout (236) concentric.
6. The pressure test device for supporting surrounding rocks in the cavern as claimed in claim 5, wherein: a first mounting space is formed in the first supporting plate (231), a second mounting space is formed in the second supporting plate (232), a driving shaft (238) is rotatably connected between the first supporting plate (231) and the second supporting plate (232), one end of the driving shaft (238) penetrates through the first mounting space and extends outwards to form a suspension end, the other end of the driving shaft (238) extends into the second mounting space, a first driving gear (240) and a second driving gear (241) are fixedly mounted on the driving shaft (238), the first driving gear (240) is located in the first mounting space, the second driving gear (241) is located in the second mounting space, a driven gear (242) is rotatably mounted in the first mounting space, the driven gear (242) is meshed with the first driving gear (240), a guide slider (237) on the first adjusting supporting plate (233) is mounted in a guide chute (236) on the first supporting plate (231), a guide sliding block (237) on the second adjusting support plate (234) is arranged in a guide sliding groove (236) on the second support plate (232), an arc-shaped rack is also fixedly arranged on the guide sliding block (237), and the arc-shaped rack of the guide sliding block (237) on the first adjusting support plate (233) extends into the first installation space and is meshed with the driven gear (242); the arc-shaped rack of the guide sliding block (237) on the second adjusting supporting plate (234) extends into the second mounting space and is meshed with the second driving gear (241).
7. The pressure test device for the chamber surrounding rock support according to claim 1, characterized in that: the pressing piece is fixed through the extrusion fixing component (5), the extrusion fixing component (5) comprises a circular tube-shaped installation barrel (51), the installation barrel (51) is fixedly installed on the installation frame (3) and the axis of the installation barrel (51) extends in the vertical direction, an annular installation space (52) is formed inside the barrel wall of the installation barrel (51), a driving shaft installation hole extending in the vertical direction is formed in the axial end face of the installation barrel (51), a driving shaft (54) is rotatably installed in the driving shaft installation hole, one end of the driving shaft (54) is located outside the installation barrel (51) to form an extending end, the other end of the driving shaft (54) extends into the annular installation space (52), a driving straight gear (56) and a driving bevel gear (57) are further fixedly installed on the driving shaft (54), the driving straight gear (56) and the driving bevel gear (57) are positioned in the annular mounting space (52) and the driving bevel gear (57) is positioned at the end part of the driving shaft (54); the inner side cylinder wall of the annular installation space (52) is also rotatably sleeved with an annular gear (58), and the annular gear (58) is meshed with the driving straight gear (56); a driven shaft (59) which is parallel to the driving shaft (54) is rotatably arranged in the annular installation space (52), the driven shaft (59) and the driving shaft (54) are uniformly arranged at intervals in the circumferential direction of the installation cylinder (51), a driven straight gear (60) and a driven bevel gear (61) are fixedly arranged on the driven shaft (59), the driven bevel gear (61) is positioned at the end part of the driven shaft (59), and the driven straight gear (60) is meshed with the annular gear (58); the annular mounting space (52) is also internally rotatably provided with matched bevel gears (62), the number of the matched bevel gears (62) is equal to the sum of the number of the driving bevel gears (57) and the number of the driven bevel gears (61), the driving bevel gears (57) and the driven bevel gears (61) are respectively meshed with one matched bevel gear (62), each matched bevel gear (62) is respectively rotatably mounted in the annular mounting space (52) through a jacking rod (63), through holes for the jacking rod (63) to pass through are respectively formed in the cylinder walls at the two radial sides of the annular mounting space (52), the jacking rods (63) are radially arranged along the mounting cylinder (51), two ends of the jacking rod (63) are supported in the two through holes, each jacking rod (63) comprises a thread section (631) and a rotation stopping matched section (632), the thread section (631) is provided with an external thread, the center of each matched bevel gear (62) is provided with a thread hole matched with the thread section (631), the matching bevel gear (62) is in threaded connection with the threaded section (631), the rotation stopping matching section (632) is provided with a stop block (633) protruding outwards, a slot matched with the stop block (633) is formed in the wall of the through hole in the outer side of the annular mounting space (52), the stop block (633) is inserted into the slot, and a jacking plate (64) used for jacking the pressing piece is fixedly mounted at the end of the threaded section (631).
8. The pressure test device for supporting surrounding rocks in the cavern as claimed in claim 7, wherein: the overhanging end of the driving shaft (54) is also fixedly provided with a turntable (55) which is convenient for rotating the driving shaft (54).
9. The pressure test device for the chamber surrounding rock support according to claim 1, characterized in that: the number of the holes (11) is at least two, and the sizes of the holes (11) are different.
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| CN113916672B (en) | 2024-03-26 |
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