CN104807974B - A kind of analog material seam mining simulator stand and test method - Google Patents
A kind of analog material seam mining simulator stand and test method Download PDFInfo
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- CN104807974B CN104807974B CN201510233667.0A CN201510233667A CN104807974B CN 104807974 B CN104807974 B CN 104807974B CN 201510233667 A CN201510233667 A CN 201510233667A CN 104807974 B CN104807974 B CN 104807974B
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Abstract
The invention discloses a kind of analog material seam mining simulator stand, comprise grid base plate, be arranged on the lift supporting mechanism bottom grid base plate and be connected to the supporting plate of polylith round rectangle at multiple grid positions place on grid base plate by lift coupling assembling liftable, and be detachably connected on the multilayer long limit wall interior panel of edge, both sides, long limit on grid base plate and be detachably connected on the multilayer minor face wall interior panel of edge, minor face both sides on grid base plate, every layer long limit wall interior panel is fixedly connected with minor face wall interior panel with two long limit wall interior panels adjacent in minor face wall interior panel, lift coupling assembling comprises four groups of supporting plate corner lifting assemblies and supporting plate center lifting assembly, the invention also discloses a kind of analog material seam mining simulation experiment method.The structure of testing table of the present invention is simple, easy and simple to handle, easily controls, strong adaptability, improves conventional efficient; The method step of test method is simple, the authenticity of seam mining simulation is strong, accuracy is high, test efficiency is high.
Description
Technical field
The invention belongs to mining and Geotechnical Engineering Equivalent Materials Testing technical field, be specifically related to a kind of analog material seam mining simulator stand and test method.
Background technology
Equivalent material simulating is the main experimental research method of mining engineering and Geotechnical Engineering, can be used for simulation reconstruction engineering site seam mining excavation live, and observes surrouding rock stress, the strain and displacement under this condition.Equivalent Materials Testing is simple, visual in image, repetition test can be carried out according to different recovery schemes, there is significant advantage, in occupation of irreplaceable critical role in mining engineering Study on Problems process to rock stratum migration, the Fracture of studying mining active process.Therefore, Equivalent Materials Testing device is all generally had in the testing laboratory of many institution of higher learning and R&D institution.At present, Equivalent Materials Testing device is divided into two-dimentional equivalent material simulating test unit and the large class of three-dimensional Equivalent Materials Testing device two.
Mainly there is following problem and shortage in existing three-dimensional resemble simulation test device: 1, build both bulk, structure is unreasonable, mechanism is lengthy and jumbled, hinder test operation and observation, and fixed welded structure limits it can not need to carry out rapid-assembling or dismounting at any time according to test, just be difficult to dismounting once build up and move, taking a large amount of valuable lab space resource for a long time; 2, because wall interior panel is non-dismountable, the analog material flash-off time of newly mating formation is long, causes that the test period is long, test efficiency is low; The labour intensity of 3, simulating seam mining is large, large to similar materials model disturbance, is difficult to the extraction of scientifically simulating coal seam, is particularly difficult to realize excavation simulation coal seam under the prerequisite not destroying similar materials model boundary; 4, be put to the test the restriction of plant bulk, is not suitable for simulation great burying seam mining.
Summary of the invention
Technical matters to be solved by this invention is for above-mentioned deficiency of the prior art, a kind of analog material seam mining simulator stand is provided, its structure is simple, realization is convenient and cost is low, easy and simple to handle, can need to carry out rapid-assembling or dismounting at any time according to experiment, easily control, strong adaptability, improves conventional efficient.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of analog material seam mining simulator stand, it is characterized in that: the grid base plate comprising rectangle, be arranged on the lift supporting mechanism bottom grid base plate and be connected to the supporting plate of polylith round rectangle at multiple grid positions place on grid base plate by lift coupling assembling liftable, and be detachably connected on the multilayer long limit wall interior panel of edge, both sides, long limit on grid base plate and be detachably connected on the multilayer minor face wall interior panel of edge, minor face both sides on grid base plate, every layer of described long limit wall interior panel is fixedly connected with minor face wall interior panel with two long limit wall interior panels adjacent in minor face wall interior panel, polylith supporting plate is positioned at the cube cavity inner bottom part surrounded by multilayer long limit wall interior panel and multilayer minor face wall interior panel, described lift coupling assembling comprises the four groups of supporting plate corner lifting assemblies being separately positioned on bottom, supporting plate corner and the supporting plate center lifting assembly being arranged on supporting plate central lower, described supporting plate corner lifting assembly comprises bottom through the supporting plate corner lifting column bottom grid base plate, be connected to the supporting plate corner flexural pivot at lifting column top, supporting plate corner and be sleeved on lifting column bottom, supporting plate corner and be positioned at the supporting plate corner lifting column sleeve bottom grid base plate, described supporting plate corner lifting column sleeve is connected with the supporting plate corner lifting column fastening bolt for the position of lifting column in the lifting column sleeve of supporting plate corner, fixing supporting plate corner, described supporting plate center lifting assembly comprises the supporting plate center lifting screw be threaded on grid base plate, is connected to the supporting plate astrosphere articulated joint at lifting screw top, supporting plate center and is connected to the supporting plate center lifting knob bottom the lifting screw of supporting plate center, described grid base plate is provided with the supporting plate corner lifting column jack that passes for supporting plate corner lifting column and the threaded hole for the center lifting screw that is threaded.
Above-mentioned a kind of analog material seam mining simulator stand, it is characterized in that: described lift supporting mechanism comprises and is laid in four hydraulic cylinders immediately below grid base plate four angles and the four hydraulic cylinder connecting links for being fixedly connected with four hydraulic cylinders surrounding rectangle respectively, and the bottom at described grid base plate four angles is provided with the piston rod sleeve be sleeved on the piston rod of hydraulic cylinder.
Above-mentioned a kind of analog material seam mining simulator stand, it is characterized in that: the bottom of described long limit wall interior panel is provided with long limit wall interior panel plug, on described grid base plate, edge, both sides, long limit is provided with the grid base plate long limit wall interior panel jack inserted for long limit wall interior panel plug, and the top of described long limit wall interior panel is provided with the wall interior panel long limit wall interior panel jack inserted for long limit wall interior panel plug; The bottom of described minor face wall interior panel is provided with minor face wall interior panel plug, on described grid base plate, edge, minor face both sides is provided with the grid base plate minor face wall interior panel jack inserted for minor face wall interior panel plug, and the top of described minor face wall interior panel is provided with the wall interior panel minor face wall interior panel jack inserted for minor face wall interior panel plug.
Above-mentioned a kind of analog material seam mining simulator stand, is characterized in that: every layer of described long limit wall interior panel is fixedly connected with by wall interior panel fastening bolt with minor face wall interior panel with two long limit wall interior panels adjacent in minor face wall interior panel.
Above-mentioned a kind of analog material seam mining simulator stand, is characterized in that: the lateral surface of described long limit wall interior panel is provided with long limit wall interior panel and scratches hand, the lateral surface of described minor face wall interior panel is provided with minor face wall interior panel and scratches hand.
Above-mentioned a kind of analog material seam mining simulator stand, it is characterized in that: described supporting plate corner flexural pivot is identical with the structure of supporting plate astrosphere articulated joint and include shell and the ball-joint lower casing be connected with shell in ball-joint by ball-joint bolt in ball-joint, and the hinged ball be connected in the spherical hollow space that surrounded by shell in ball-joint and ball-joint lower casing, be provided with ball in the spherical hollow space that in described ball-joint, shell and ball-joint lower casing surround.
Above-mentioned a kind of analog material seam mining simulator stand, is characterized in that: described supporting plate corner lifting column and supporting plate center lifting screw are provided with scale.
Present invention also offers the analog material seam mining simulation experiment method that authenticity is strong, accuracy is high, test efficiency is high that a kind of method step is simple, seam mining is simulated, it is characterized in that the method comprises the following steps:
Step one, assembling simulator stand: on lift supporting mechanism, connect grid base plate, on grid base plate, multiple grid positions place connects polylith supporting plate by lift coupling assembling, and edge, both sides, long limit connects one deck long limit wall interior panel on grid base plate, on grid base plate, edge, minor face both sides connects one deck minor face wall interior panel, and is fixedly connected with two adjacent long limit wall interior panels and minor face wall interior panel;
Step 2, similar materials of mating formation: in polylith supporting plate top pavement layer by layer similar materials, and while pavement layer by layer similar materials, successively install long limit wall interior panel and minor face wall interior panel additional, till the height of the similar materials of mating formation reaches design height;
Step 3, simulation seam mining: until the similar materials drying of mating formation in step 2 after 3 ~ 10 days, according to order from left to right or from right to left, by the height and the inclination angle that regulate lift coupling assembling to regulate polylith supporting plate, the height of polylith supporting plate is reduced in order, the seam mining process that simulation underground coal mine workplace is pushed ahead; After the height reduction of supporting plate, and define space between similar materials, simulate the goaf of coal mine underground coal bed exploitation; Along with polylith supporting plate order is lowered, similar materials outstanding is shown up long-pending increasing, each layer similar materials bends downwards successively under the effect of self gravitation and upper strata similar materials pressure, be out of shape, disrumpent feelings, be caving, simultaneously, also grow irregular crack in each layer similar materials, the surface of similar materials also there occurs movement and deformation;
Step 4, phenomenon are observed: after simulation seam mining terminates, open the long limit wall interior panel or minor face wall interior panel that need observation position, the movement and deformation situation on observation similar materials surface and fracture intensity.
The present invention compared with prior art has the following advantages:
1, the structure of analog material seam mining simulator stand of the present invention is simple, rationally novel in design, realize convenient and cost is low, can solve three-dimensional Equivalent Materials Testing stage body type both bulk of the prior art, complex structure, mechanism lengthy and jumbled, be difficult to authentic and valid simulation seam mining, the fixed practical problems such as non-dismountable.
2, grid base plate of the present invention is connected on lift supporting mechanism, and lift supporting mechanism comprises four hydraulic cylinders be laid in respectively immediately below grid base plate four angles, therefore, during concrete enforcement, hydraulic cylinder can be connected with hydraulic hand-pump, the piston rod of hydraulic cylinder is made to stretch out or retract by operation hydraulic hand-pump, to regulate the height at described grid base plate four angles, can be convenient and swift, meet the differing heights requirement of similar materials Model Mounting stage and experimental phase maneuverability, facilitate test operation, and it is easy and simple to handle, easy control, strong adaptability.
3, grid base plate of the present invention adopts the latticed grid base plate in hollow out, and compared with three-dimensional resemble simulation test device of the prior art, base plate consumptive material is few, weight is little, alleviates the overall weight of analog material seam mining simulator stand of the present invention.
4, supporting plate of the present invention is connected to grid positions place on grid base plate by lift coupling assembling liftable, therefore, it is possible to the height of adjusting supporting board and angle as required, can simulate sinuous coal seam or stratum truly.
5, supporting plate corner lifting column of the present invention and supporting plate center lifting screw are provided with scale, therefore, it is possible to the accurately height of adjusting supporting board and angle as required, can the exploitation in simulate formation coal seam exactly, can also according to the produced quantity in the coal seam of adjustable height difference calculating simulation.
6, long limit wall interior panel of the present invention and minor face wall interior panel can need assembling in good time or dismounting according to test, strong adaptability; Successively can assemble at similar materials assembling stage, facilitate the assembling of similar materials; Can dismantle down after similar materials assembling, similar materials model surrounding is all exposed in atmosphere, be beneficial to moisture evaporation, shorten the flash-off time of similar materials model, improve test efficiency; Long limit wall interior panel and minor face wall interior panel can be removed in process of the test or after test, facilitate movement and deformation situation and the fracture intensity on observation similar materials surface, also facilitate and dissect similar materials model, observe the fracture intensity of similar materials model inside.
7, the present invention is by arranging long limit wall interior panel and scratch hand and minor face wall interior panel scratching hand, both be conducive to grabbing and carried long limit wall interior panel and minor face wall interior panel, be conducive to again the concentrated stacking management after long limit wall interior panel and the dismounting of minor face wall interior panel, the analog material seam mining simulator stand outward appearance that assembles can be made neat simultaneously, decrease outer male structure, not easily accidentally injure testing crew.
8, long limit of the present invention wall interior panel thereon, lower boundary has long limit wall interior panel plug to limit its displacement, and its border, left and right two ends has wall interior panel fastening bolt to limit its displacement; Minor face wall interior panel, lower boundary has minor face wall interior panel plug to limit its displacement, its border, left and right two ends has wall interior panel fastening bolt to limit its displacement thereon; Make it more not easily deform by the channel-section steel of fixed constraint than traditional two ends, left and right of only having, thus ensure that the assembling effect of similar materials model.
9, hydraulic cylinder of the present invention, grid base plate, supporting plate, long limit wall interior panel all belong to free-standing with minor face wall interior panel etc. and are connected, can carry out quickly and easily assembling, dismantle and transporting, after off-test, stack neat after each ingredient dismounting, for other practice ground has vacateed space, both save a large amount of preciousness and limited lab space resource, be conducive to again effective management of experiment equipment simultaneously.
10, the method step of analog material seam mining simulation experiment method of the present invention is simple, and the authenticity of seam mining simulation is strong, and accuracy is high, and test efficiency is high.
11, present invention reduces experimental cost, result of use is good, is convenient to promote the use of.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Fig. 1 is the structural representation of analog material seam mining simulator stand of the present invention.
Fig. 2 is the vertical view of grid base plate of the present invention.
Fig. 3 is that supporting plate of the present invention is arranged on the vertical view after on grid base plate.
Fig. 4 is the annexation schematic diagram of grid base plate of the present invention, lift coupling assembling and supporting plate.
Fig. 5 is the structural representation of supporting plate corner of the present invention lifting assembly.
Fig. 6 is the structural representation of supporting plate center of the present invention lifting assembly.
Fig. 7 is the annexation schematic diagram of the present invention's long limit wall interior panel and minor face wall interior panel.
Description of reference numerals:
1-supporting plate center lifting assembly; 2-hydraulic cylinder; 3-wall interior panel long limit wall interior panel jack;
4-piston rod sleeve; 5-hydraulic cylinder connecting link; 6-grid base plate;
7-long limit wall interior panel; 8-minor face wall interior panel; 9-grid base plate long limit wall interior panel jack;
10-long limit wall interior panel scratches hand; 11-wall interior panel fastening bolt; 12-minor face wall interior panel plug;
13-grid base plate minor face wall interior panel jack; 14-wall interior panel minor face wall interior panel jack;
15-minor face wall interior panel scratches hand; 16-ball; 17-supporting plate corner lifting column jack;
18-threaded hole; 19-supporting plate; 20-supporting plate corner lifting column;
21-supporting plate corner lifting column sleeve; 22-supporting plate corner lifting column fastening bolt;
23-scale; 24-hinged ball; 25-ball-joint lower casing;
Shell in 26-ball-joint; 27-ball-joint bolt; 28-supporting plate center lifting screw;
29-supporting plate center lifting knob; 30-long limit wall interior panel plug;
31-supporting plate corner lifting assembly.
Embodiment
As shown in Fig. 1 ~ Fig. 7, analog material seam mining simulator stand of the present invention, comprise the grid base plate 6 of rectangle, be arranged on the lift supporting mechanism bottom grid base plate 6 and be connected to the supporting plate 19 of polylith round rectangle at multiple grid positions place on grid base plate 6 by lift coupling assembling liftable, and be detachably connected on the multilayer long limit wall interior panel 7 of edge, both sides, long limit on grid base plate 6 and be detachably connected on the multilayer minor face wall interior panel 8 of edge, minor face both sides on grid base plate 6, every layer of described long limit wall interior panel 7 is fixedly connected with minor face wall interior panel 8 with two long limit wall interior panels 7 adjacent in minor face wall interior panel 8, polylith supporting plate 19 is positioned at the cube cavity inner bottom part surrounded by multilayer long limit wall interior panel 7 and multilayer minor face wall interior panel 8, described lift coupling assembling comprises the four groups of supporting plate corner lifting assemblies 31 being separately positioned on supporting plate 19 4 jiaos of bottoms and the supporting plate center lifting assembly 1 being arranged on supporting plate 19 central lower, described supporting plate corner lifting assembly 31 comprises bottom through the supporting plate corner lifting column 20 bottom grid base plate 6, be connected to the supporting plate corner flexural pivot at lifting column 20 top, supporting plate corner and be sleeved on lifting column 20 bottom, supporting plate corner and be positioned at the supporting plate corner lifting column sleeve 21 bottom grid base plate 6, described supporting plate corner lifting column sleeve 21 is connected with the supporting plate corner lifting column fastening bolt 22 for the position of fixing supporting plate corner lifting column 20 in supporting plate corner lifting column sleeve 21, described supporting plate center lifting assembly 1 comprises the supporting plate center lifting screw 28 be threaded on grid base plate 6, is connected to the supporting plate astrosphere articulated joint at lifting screw 28 top, supporting plate center and is connected to the supporting plate center lifting knob 29 bottom supporting plate center lifting screw 28, described grid base plate 6 is provided with the supporting plate corner lifting column jack 17 that passes for supporting plate corner lifting column 20 and the threaded hole 18 for the center lifting screw 28 that is threaded.
In the present embodiment, one block of supporting plate 19 is connected with above every four grids, on described grid base plate 6 every four grids four angles on be provided with a supporting plate corner lifting column jack 17, on described grid base plate 6, every four grid centers of a lattice are provided with a threaded hole 18.
As shown in Figure 1, in the present embodiment, described lift supporting mechanism comprises and is laid in four hydraulic cylinders 2 immediately below grid base plate 6 four angles and the four hydraulic cylinder connecting links 5 for being fixedly connected with four hydraulic cylinders 2 surrounding rectangle respectively, and the bottom at described grid base plate 6 four angles is provided with the piston rod sleeve 4 on the piston rod being sleeved on hydraulic cylinder 2.Be fixedly connected with four hydraulic cylinders 2 by the hydraulic cylinder connecting link 5 that four rhizospheres are orthogonal, the stability of described lift supporting mechanism structure can be ensured.
As shown in Figure 7, in the present embodiment, the bottom of described long limit wall interior panel 7 is provided with long limit wall interior panel plug 30, on described grid base plate 6, edge, both sides, long limit is provided with the grid base plate long limit wall interior panel jack 9 inserted for long limit wall interior panel plug 30, and the top of described long limit wall interior panel 7 is provided with the wall interior panel long limit wall interior panel jack 3 inserted for long limit wall interior panel plug 30; The bottom of described minor face wall interior panel 8 is provided with minor face wall interior panel plug 12, on described grid base plate 6, edge, minor face both sides is provided with the grid base plate minor face wall interior panel jack 13 inserted for minor face wall interior panel plug 12, and the top of described minor face wall interior panel 8 is provided with the wall interior panel minor face wall interior panel jack 14 inserted for minor face wall interior panel plug 12.During concrete enforcement, the length of described long limit wall interior panel 7 is 2040mm, and width is 100mm, and thickness is 20mm; The length of described minor face wall interior panel 8 is 2000mm, and width is 100mm, and thickness is 20mm; The diameter of described long limit wall interior panel plug 30 and minor face wall interior panel plug 12 is 9mm, is highly 30mm; Described grid base plate long limit wall interior panel jack 9 and wall interior panel long limit wall interior panel jack 3, and the diameter of grid base plate minor face wall interior panel jack 13 and wall interior panel minor face wall interior panel jack 14 is 10mm, the degree of depth is 30mm.Long limit of the present invention wall interior panel 7 and minor face wall interior panel 8 can need assembling in good time or dismounting according to test, strong adaptability; Successively can assemble at similar materials assembling stage, facilitate the assembling of similar materials; Can dismantle down after similar materials assembling, similar materials model surrounding is all exposed in atmosphere, be beneficial to moisture evaporation, shorten the flash-off time of similar materials model, improve test efficiency; Long limit wall interior panel 7 and minor face wall interior panel 8 can be removed in process of the test or after test, facilitate movement and deformation situation and the fracture intensity on observation similar materials surface, also facilitate and dissect similar materials model, observe the fracture intensity of similar materials model inside.
As shown in Figure 1, in the present embodiment, every layer of described long limit wall interior panel 7 is fixedly connected with by wall interior panel fastening bolt 11 with minor face wall interior panel 8 with two long limit wall interior panels 7 adjacent in minor face wall interior panel 8.
As shown in Figure 1 and Figure 7, in the present embodiment, the lateral surface of described long limit wall interior panel 7 is provided with long limit wall interior panel and scratches hand 10, the lateral surface of described minor face wall interior panel 8 is provided with minor face wall interior panel and scratches hand 15.During concrete enforcement, it is 100mm that described long limit wall interior panel scratches the length that hand 10 and minor face wall interior panel scratch hand 15, and outer width is 30mm, and insied width is 60mm, and the degree of depth is 12mm.By arranging long limit wall interior panel and scratch hand 10 and minor face wall interior panel scratching hand 15, both be conducive to grabbing and carried long limit wall interior panel 7 and minor face wall interior panel 8, be conducive to again the concentrated stacking management after long limit wall interior panel 7 and minor face wall interior panel 8 dismounting, the analog material seam mining simulator stand outward appearance that assembles can be made neat simultaneously, decrease outer male structure, not easily accidentally injure testing crew.
As shown in Figure 5 and Figure 6, in the present embodiment, described supporting plate corner flexural pivot is identical with the structure of supporting plate astrosphere articulated joint and include shell 26 and the ball-joint lower casing 25 be connected with shell in ball-joint 26 by ball-joint bolt 27 in ball-joint, and the hinged ball 24 be connected in the spherical hollow space that surrounded by shell in ball-joint 26 and ball-joint lower casing 25, be provided with ball 16 in the spherical hollow space that in described ball-joint, shell 26 and ball-joint lower casing 25 surround.During use, in ball-joint, shell 26 is fixedly connected with supporting plate 19.
As shown in Figure 5 and Figure 6, in the present embodiment, described supporting plate corner lifting column 20 and supporting plate center lifting screw 28 are provided with scale 23.
During concrete enforcement, described grid base plate 6 is square, length and the width of described grid base plate 6 are 2240mm, the thickness of described grid base plate 6 is 40mm, adopt the latticed grid base plate 6 in hollow out, compared with three-dimensional resemble simulation test device of the prior art, base plate consumptive material is few, weight is little, alleviates the overall weight of analog material seam mining simulator stand of the present invention.Described supporting plate 19 is square, and length and the width of described supporting plate 19 are 200mm, and the thickness of described supporting plate 19 is 10mm; The length of described supporting plate corner lifting column 20 and supporting plate center lifting screw 28 is 250mm, and diameter is 20mm; Described scale 23 is 100mm to the maximum; Such supporting plate 19, supporting plate corner lifting assembly 31 and supporting plate center lifting assembly 1, can the accurately height of adjusting supporting board 19 and angle as required, sinuous coal seam or stratum can be simulated truly, can the exploitation in simulate formation coal seam exactly, can also according to the produced quantity in the coal seam of adjustable height difference calculating simulation.
Analog material seam mining simulation experiment method of the present invention, comprises the following steps:
Step one, assembling simulator stand: on lift supporting mechanism, connect grid base plate 6, on grid base plate 6, multiple grid positions place connects polylith supporting plate 19 by lift coupling assembling, and edge, both sides, long limit connects one deck long limit wall interior panel 7 on grid base plate 6, on grid base plate 6, edge, minor face both sides connects one deck minor face wall interior panel 8, and is fixedly connected with two adjacent long limit wall interior panels 7 and minor face wall interior panel 8;
Step 2, similar materials of mating formation: in polylith supporting plate 19 top pavement layer by layer similar materials, and while pavement layer by layer similar materials, successively install long limit wall interior panel 7 and minor face wall interior panel 8 additional, till the height of the similar materials of mating formation reaches design height;
Step 3, simulation seam mining: until the similar materials drying of mating formation in step 2 after 3 ~ 10 days, according to order from left to right or from right to left, by the height and the inclination angle that regulate lift coupling assembling to regulate polylith supporting plate 19, the height of polylith supporting plate 19 is reduced in order, the seam mining process that simulation underground coal mine workplace is pushed ahead; After the height reduction of supporting plate 19, and define space between similar materials, simulate the goaf of coal mine underground coal bed exploitation; Along with polylith supporting plate 19 order is lowered, similar materials outstanding is shown up long-pending increasing, each layer similar materials bends downwards successively under the effect of self gravitation and upper strata similar materials pressure, be out of shape, disrumpent feelings, be caving, simultaneously, also grow irregular crack in each layer similar materials, the surface of similar materials also there occurs movement and deformation;
Step 4, phenomenon are observed: after simulation seam mining terminates, open the long limit wall interior panel 7 or minor face wall interior panel 8 that need observation position, the movement and deformation situation on observation similar materials surface and fracture intensity.During concrete enforcement, all long limit wall interior panels 7 or minor face wall interior panel 8 can also be removed, dissect similar materials model, observe the fracture intensity of similar materials model inside.
In addition, because grid base plate 6 is connected on lift supporting mechanism, and lift supporting mechanism comprises four hydraulic cylinders 2 be laid in respectively immediately below grid base plate 6 four angles, therefore, during concrete enforcement, can also the safety valve 1 be connected on hydraulic cylinder 2 be connected on hydraulic hand-pump by hydraulic oil pipe, the piston rod of hydraulic cylinder 2 is made to stretch out or retract by operation hydraulic hand-pump, to regulate the height at described grid base plate 6 four angles, meet step 2 in process of the test, the needs of different phase to simulator stand differing heights are tested in step 3 and step 4, facilitate test operation, and it is easy and simple to handle, easy control, maneuverability, strong adaptability.
The above; it is only preferred embodiment of the present invention; not the present invention is imposed any restrictions, every above embodiment is done according to the technology of the present invention essence any simple modification, change and equivalent structure change, all still belong in the protection domain of technical solution of the present invention.
Claims (8)
1. an analog material seam mining simulator stand, it is characterized in that: the grid base plate (6) comprising rectangle, the supporting plate (19) of the lift supporting mechanism being arranged on grid base plate (6) bottom and the polylith round rectangle being connected to the upper multiple grid positions place of grid base plate (6) by lift coupling assembling liftable, and be detachably connected on multilayer long limit wall interior panel (7) of the upper edge, both sides, long limit of grid base plate (6) and be detachably connected on the multilayer minor face wall interior panel (8) of the upper edge, minor face both sides of grid base plate (6), every layer of described long limit wall interior panel (7) is fixedly connected with minor face wall interior panel (8) with two long limits wall interior panel (7) adjacent in minor face wall interior panel (8), polylith supporting plate (19) is positioned at the cube cavity inner bottom part surrounded by multilayer long limit wall interior panel (7) and multilayer minor face wall interior panel (8), described lift coupling assembling comprises four groups of supporting plate corners lifting assembly (31) being separately positioned on supporting plate (19) bottom, corner and supporting plate center lifting assembly (1) being arranged on supporting plate (19) central lower, described supporting plate corner lifting assembly (31) comprises supporting plate corner lifting column (20) of bottom through grid base plate (6) bottom, be connected to the supporting plate corner flexural pivot at lifting column (20) top, supporting plate corner and be sleeved on lifting column (20) bottom, supporting plate corner and be positioned at supporting plate corner lifting column sleeve (21) bottom grid base plate (6), described supporting plate corner lifting column sleeve (21) is connected with supporting plate corner lifting column fastening bolt (22) for the fixing position of supporting plate corner lifting column (20) in supporting plate corner lifting column sleeve (21), described supporting plate center lifting assembly (1) comprises supporting plate center lifting screw (28) be threaded on grid base plate (6), is connected to the supporting plate astrosphere articulated joint at lifting screw (28) top, supporting plate center and is connected to supporting plate center lifting knob (29) bottom supporting plate center lifting screw (28), described grid base plate (6) is provided with for supporting plate corner lifting column (20) supporting plate corner lifting column jack (17) passed and the threaded hole (18) for center lifting screw (28) that are threaded.
2. according to a kind of analog material seam mining simulator stand according to claim 1, it is characterized in that: described lift supporting mechanism comprises and is laid in four hydraulic cylinders (2) immediately below grid base plate (6) four angles and the four hydraulic cylinder connecting links (5) for being fixedly connected with four hydraulic cylinders (2) surrounding rectangle respectively, and the bottom at described grid base plate (6) four angles is provided with the piston rod sleeve (4) on the piston rod being sleeved on hydraulic cylinder (2).
3. according to a kind of analog material seam mining simulator stand according to claim 1, it is characterized in that: the bottom of described long limit wall interior panel (7) is provided with long limit wall interior panel plug (30), the upper edge, both sides, long limit of described grid base plate (6) is provided with grid base plate long limit wall interior panel jack (9) of inserting for long limit wall interior panel plug (30), and the top of described long limit wall interior panel (7) is provided with wall interior panel long limit wall interior panel jack (3) of inserting for long limit wall interior panel plug (30); The bottom of described minor face wall interior panel (8) is provided with minor face wall interior panel plug (12), the upper edge, minor face both sides of described grid base plate (6) is provided with grid base plate minor face wall interior panel jack (13) inserted for minor face wall interior panel plug (12), and the top of described minor face wall interior panel (8) is provided with wall interior panel minor face wall interior panel jack (14) inserted for minor face wall interior panel plug (12).
4. according to a kind of analog material seam mining simulator stand according to claim 1, it is characterized in that: every layer of described long limit wall interior panel (7) is fixedly connected with by wall interior panel fastening bolt (11) with minor face wall interior panel (8) with two long limits wall interior panel (7) adjacent in minor face wall interior panel (8).
5. according to a kind of analog material seam mining simulator stand according to claim 1, it is characterized in that: the lateral surface of described long limit wall interior panel (7) is provided with long limit wall interior panel and scratches hand (10), the lateral surface of described minor face wall interior panel (8) is provided with minor face wall interior panel and scratches hand (15).
6. according to a kind of analog material seam mining simulator stand according to claim 1, it is characterized in that: described supporting plate corner flexural pivot and the ball-joint lower casing (25) that include ball-joint in shell (26) and by ball-joint bolt (27) with ball-joint in shell (26) be connected identical with the structure of supporting plate astrosphere articulated joint, and the hinged ball (24) be connected in the spherical hollow space that surrounded by shell in ball-joint (26) and ball-joint lower casing (25), ball (16) is provided with in the spherical hollow space that in described ball-joint, shell (26) and ball-joint lower casing (25) surround.
7. according to a kind of analog material seam mining simulator stand according to claim 1, it is characterized in that: described supporting plate corner lifting column (20) and supporting plate center lifting screw (28) are provided with scale (23).
8. utilize simulator stand as claimed in claim 1 to carry out a method for analog material seam mining simulation test, it is characterized in that the method comprises the following steps:
Step one, assembling simulator stand: on lift supporting mechanism, connect grid base plate (6), at grid base plate (6), upper multiple grid positions place connects polylith supporting plate (19) by lift coupling assembling, and connect one deck long limit wall interior panel (7) in the upper edge, both sides, long limit of grid base plate (6), connect one deck minor face wall interior panel (8) in the upper edge, minor face both sides of grid base plate (6), and be fixedly connected with two adjacent long limits wall interior panel (7) and minor face wall interior panel (8);
Step 2, similar materials of mating formation: in polylith supporting plate (19) top pavement layer by layer similar materials, and while pavement layer by layer similar materials, successively install long limit wall interior panel (7) and minor face wall interior panel (8) additional, till the height of the similar materials of mating formation reaches design height;
Step 3, simulation seam mining: until the similar materials drying of mating formation in step 2 after 3 ~ 10 days, according to order from left to right or from right to left, by the height and the inclination angle that regulate lift coupling assembling to regulate polylith supporting plate (19), the height of polylith supporting plate (19) is reduced in order, the seam mining process that simulation underground coal mine workplace is pushed ahead; After the height reduction of supporting plate (19), and define space between similar materials, simulate the goaf of coal mine underground coal bed exploitation; Along with polylith supporting plate (19) order is lowered, similar materials outstanding is shown up long-pending increasing, each layer similar materials bends downwards successively under the effect of self gravitation and upper strata similar materials pressure, be out of shape, disrumpent feelings, be caving, simultaneously, also grow irregular crack in each layer similar materials, the surface of similar materials also there occurs movement and deformation;
Step 4, phenomenon are observed: after simulation seam mining terminates, open long limit wall interior panel (7) or minor face wall interior panel (8) that need observation position, the movement and deformation situation on observation similar materials surface and fracture intensity.
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