CN110514804A - A kind of Seam Mining physical simulation experiment filling device and packing method - Google Patents
A kind of Seam Mining physical simulation experiment filling device and packing method Download PDFInfo
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- CN110514804A CN110514804A CN201910815512.6A CN201910815512A CN110514804A CN 110514804 A CN110514804 A CN 110514804A CN 201910815512 A CN201910815512 A CN 201910815512A CN 110514804 A CN110514804 A CN 110514804A
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- 238000004088 simulation Methods 0.000 title claims abstract description 109
- 238000005065 mining Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 26
- 238000012856 packing Methods 0.000 title claims description 12
- 239000000463 material Substances 0.000 claims abstract description 90
- 238000002474 experimental method Methods 0.000 claims abstract description 12
- 238000012360 testing method Methods 0.000 claims description 17
- 239000004615 ingredient Substances 0.000 claims description 15
- 239000011435 rock Substances 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 12
- 230000008859 change Effects 0.000 claims description 9
- 239000003245 coal Substances 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 claims description 3
- 238000005056 compaction Methods 0.000 claims description 3
- 230000008094 contradictory effect Effects 0.000 claims description 3
- 238000011496 digital image analysis Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims 2
- 239000007788 liquid Substances 0.000 claims 1
- 239000002356 single layer Substances 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 241000607479 Yersinia pestis Species 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 210000001072 colon Anatomy 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010429 evolutionary process Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/20—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress
- G01L1/22—Measuring force or stress, in general by measuring variations in ohmic resistance of solid materials or of electrically-conductive fluids; by making use of electrokinetic cells, i.e. liquid-containing cells wherein an electrical potential is produced or varied upon the application of stress using resistance strain gauges
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/222—Solid fuels, e.g. coal
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Abstract
The present invention relates to physical simulation experimental technique fields, are related to a kind of Seam Mining physical simulation experiment filling device, including experimental box body, the hydraulic cylinder peace slab to contain simulation material.Experimental box body has accommodating opening upward.Hydraulic cylinder is configured at outside experimental box body, and hydraulic cylinder is configured with output rod, and output rod may pass through accommodating opening and protrude into experimental box body.Tiling panel is configured at simulation material upper surface, and the panel that tiles is to squeeze simulation material under the driving force of output rod.It is consistent that the simulation material of single layer can be densified to compactness by it, so that finally carrying out obtaining preferable simulation effect when simulated experiment.
Description
Technical field
The present invention relates to physical simulation experimental technique fields, similar in particular to a kind of Seam Mining physics
Simulated experiment filling device and packing method.
Background technique
For the generation of effective Restraining Accidents of Coal Mines, the pests occurrence rule of disaster accident is studied, physical simulation is a kind of
Important means.Physical simulation is to make reality similar with prototype geometry, mechanics parameter by the principle of similitude in laboratory
Model is tested, by the mechanical behavior and the overlying strata characteristics of motion inside test equipment observation model, using the result of study on model,
So as to instructing engineering practice.
However in existing model manufacturing, the material stirred evenly is poured into model be compacted in or use
The material installed is tamped or is tamped using hydraulic motor by impact head by iron block.It is existing to pass through small cross sectional
Iron block, the big impact of pressure is carried out to simulation material, to compress simulation material, iron block is needed to carry out up and down motion repeatedly,
And the inconsistent problem of the compactness of simulation material everywhere after compacting is brought, and then can cause to the accuracy of final simulated experiment
It influences.
Summary of the invention
The first purpose of this invention is to provide a kind of Seam Mining physical simulation experiment filling device, can
It is consistent that monolayer simulation material is densified to compactness.
Second object of the present invention is to provide a kind of Seam Mining physical simulation experiment packing method, can
It is consistent that monolayer simulation material is densified to compactness.
The embodiment of the present invention is achieved in that
A kind of Seam Mining physical simulation tests filling device, including to contain simulation material experimental box body,
Hydraulic cylinder peace slab.Experimental box body has accommodating opening upward.Hydraulic cylinder is configured at outside experimental box body, hydraulic cylinder configuration
There is output rod, output rod may pass through accommodating opening and protrude into experimental box body.Tiling panel is configured at simulation material upper surface, tiles
Panel is to squeeze simulation material under the driving force of output rod.
Further, output rod is fixedly connected with tiling panel.
Further, hydraulic cylinder is configured as being arranged movably in a vertical direction.
Further, experimental box body is distributed in cuboid, and accommodating cavity forms opening, experimental box body in the upside of experimental box body
Side with dismountable a pair of opposite opposition.
Further, the bottom face of experimental box body be equipped with multiple strain gauge transducers being evenly spaced on, to
Whether the stress that all areas are detected when simulation material is acted on by output rod is identical.
A kind of Seam Mining physical simulation experiment packing method, it is real including above-mentioned Seam Mining physical simulation
Test filling device, comprising the following steps:
Step a: by layered material aequum single in the model calculated, ingredient is weighed, and various ingredients are mounted in
In agitating device；
Step b: ingredient is mixed thoroughly, and water is measured from bucket, is poured into agitating device, is stirred immediately, and grumeleuse is prevented,
The ingredient being individually layered stirred evenly forms the simulation material being individually layered, and simulation material is poured into accommodating cavity, hydraulic cylinder
The default power output of output rod, simulation material by tiling panel active force and by uniform compaction；
Step c: it is arbitrarily crossed every 10cm to make rock joint with wall knife on the surface of simulation material, then uniform on its surface
Ground sprinkles a stratus female powder to simulate level, is smoothed out surface with trowel；
Step d: successively successively being implemented the material of other layerings by above step a to step c, until the mould of all layerings
Quasi- material is fitted into accommodating cavity, realizes simulation by the way of adding counterweight for failing the simulation material of top layer of simulation,
Form model；
Step e: after spontaneously drying and stablizing, a pair of mutually contradictory side in experimental box body is disassembled；
Step f: it is white to the outer surface chalk powder in experimental observation face dismantling experimental box body side and being formed, and outside
The red grid lines of 10cm × 10cm is drawn on surface, and scale is respectively set in the left side, right side and downside along the side.
Further, it is additionally provided with device for excising, device for excising for that will be more than in the simulation material after the compacting of every layering
The part of preset height is cut off；
Device for excising includes vertical bar with scale, the horizon bar that is slidably disposed in vertical bar and slidably
Ground is set to the cutter on horizon bar.
Further, preset height proportionally carries out reducing setting according to the actual conditions of working face of coal seam log sheet
It sets, ratio includes 1:50,1:100,1:200.
Further, experimental box body is arranged in cuboid, and length 2m, width 0.3-0.6m are highly 1.4m.
Further, two cameras are additionally provided with, wherein a fixed setting, for observing the position of mining active process overlying rock
The change in displacement situation in journey and mining active process is moved past, wherein one is movably disposed, for observing working face back upper place area
The rock self-open dynamic change in domain, gained image data import in computer and carry out digital image analysis；
It is additionally provided with a data acquisition device, for the base sheet stresses data acquisition in mining active process.
The beneficial effects of the present invention are:
The simulation material of large area is compacted by hydraulic cylinder, tiling panel, tiling panel can almost cover institute
The upper surface of some simulation materials enables to the pressure after compacting in simulation material everywhere consistent, and it is consistent to be equivalent to compactness,
It is good to simulate effect；And hydraulic cylinder is used, it can control power output, the respective compactness of a variety of layerings can be controlled, be more bonded
Actual conditions.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is that the general configuration for the Seam Mining physical simulation experiment filling device that the embodiment of the present invention 1 provides is shown
It is intended to；
Fig. 2 is that the general configuration for the Seam Mining physical simulation experiment packing method that the embodiment of the present invention 2 provides is shown
It is intended to；
Fig. 3 is the structural schematic diagram for the device for excising that the embodiment of the present invention 2 provides.
Icon: 100- experimental box body, 110- accommodating opening, 120- strain gauge transducer, 130- red grid lines, 140- mark
Ruler, 200- tiling panel, 300- hydraulic cylinder, 310- output rod, 400- device for excising, 410- vertical bar, 420- horizon bar, 430-
Cutter.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.The present invention being usually described and illustrated herein in the accompanying drawings is implemented
The component of example can be arranged and be designed with a variety of different configurations.
Therefore, the detailed description of the embodiment of the present invention provided in the accompanying drawings is not intended to limit below claimed
The scope of the present invention, but be merely representative of selected embodiment of the invention.Based on the embodiments of the present invention, this field is common
Technical staff's every other embodiment obtained without creative efforts belongs to the model that the present invention protects
It encloses.
It should also be noted that similar label and letter indicate similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need that it is further defined and explained in subsequent attached drawing.
In the description of the present invention, it should be noted that term " on ", "lower", "left", "right", "vertical", "horizontal",
The orientation or positional relationship of the instructions such as "inner", "outside" be based on the orientation or positional relationship shown in the drawings or the invention produce
Product using when the orientation or positional relationship usually put, be merely for convenience of description of the present invention and simplification of the description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For limitation of the present invention.
Term " parallel ", " vertical " etc. are not offered as requiring component absolute parallel or vertical, but can be slightly tilted.Such as
" parallel " only refers to that its direction is more parallel with respect to for " vertical ", is not that the expression structure has to be substantially parallel, and
It is that can be slightly tilted.
In the description of the present invention, it is also necessary to which explanation is unless specifically defined or limited otherwise, term " setting ",
" installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be fixedly connected, may be a detachable connection or one
Connect to body；It can be directly connected, the connection inside two elements can also be can be indirectly connected through an intermediary.
For the ordinary skill in the art, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.
Embodiment 1
Please refer to Fig. 1, a kind of Seam Mining physical simulation experiment filling device, including to contain simulation material
The peaceful slab 200 of experimental box body 100, hydraulic cylinder 300.Experimental box body 100 has accommodating opening 110 upward.Hydraulic cylinder 300
It is configured at outside experimental box body 100, hydraulic cylinder 300 is configured with output rod 310, and output rod 310 may pass through accommodating opening and protrude into experiment
In cabinet 100.Tiling panel 200 is configured at simulation material upper surface, and the panel 200 that tiles is to the driving force in output rod 310
Under simulation material is squeezed.
Experimental box body 100 has accommodating cavity, which forms accommodating opening 110 in the upper side of experimental box body.Tiling
The horizontal cross-sectional area of panel 100 is configured with less than the size of accommodating opening 110.
When the simulation material that compacting is added in the accommodating cavity toward experimental box body 100, tiling panel 200 is placed in simulation
The top of material provides stress by the somewhere to tiling panel 200, and the active force is by tiling panel 200 in tiling
Simulation material under 200 position of panel carries out Output power homogenization, is squeezed, and may make any in simulation material in single operation
The stress at place is identical.Simulation material is compacted, integral sinking, and compactness rises.Until in the power output of hydraulic cylinder 300
In the case where constant, when simulation material is densified to constancy of volume, hydraulic cylinder 300 stops output, takes out tiling panel 200, then
Carry out addition and the compacting operation of next layer of simulation material.Finally it can guarantee when the simulation material to single layer is compacted,
Reach the consistent effect of compactness after guaranteeing the compacting of monolayer simulation material.
Correspondingly, it is carried out in extrusion operation in single, the pressure in simulation material needed, with tiling panel 200
Horizontal cross-sectional area and hydraulic cylinder power output it is related.Firstly, the cross-sectional area of experimental box body 100 roughly limits flat spreading part
The cross-sectional area of plate 200, then passes through the pressure in the simulation material for needing to obtain, and required hydraulic cylinder can be obtained in multiplication
300 power output size.And the pressure in final simulation material, the compactness of the monolayer simulation material can be represent.
The cross-sectional area of a kind of preferable embodiment, accommodating opening 110 is identical as the horizontal cross-sectional area of accommodating cavity, puts down
The horizontal cross-sectional area of slab 200 and the horizontal cross-sectional area of accommodating cavity match, and the shape of the level cross-sectionn of the two
It is identical or approximate.The horizontal cross-sectional area of tiling panel 200 is slightly less than the horizontal cross-sectional area of accommodating cavity, facilitates tiling panel
200 enter in accommodating cavity and are placed on the simulation material of compacting.The small surface of tiling panel 200 is contacted with simulation material
Surface be set as plane, to obtain the hierarchical mode of regular level.
More, in the thinner situation in front end of the output rod 310 of hydraulic cylinder 300, in order to avoid output rod 310 with
Tile panel 200 contact local pressure it is excessive and damage tiling panel 200 in the case where, first is that need enhance tiling panel
200 rigidity Design, first is that the circle moderate in one cross-sectional area of position sandwiched that output rod 310 is contacted with tiling panel 200
Platform transition body is increased active area of the active force on tiling panel 200 indirectly, can be subtracted in this way by the transition body of circular platform type
The requirement of few rigidity to tiling panel 200.
Further, hydraulic cylinder 300 is configured as being arranged movably in a vertical direction.Due to the experimental box body 100 having
Configuration design it is relatively high, up to 1 meter or more, and the extension elongation of the output rod 310 of hydraulic cylinder 300 is certain, for convenience of export
Bar 310 protrudes into the deep inside of accommodating cavity, hydraulic cylinder 300 can be set as moving along the vertical direction.It specifically, will be hydraulic
Cylinder 300 is fixed on a bracket, and in bracket have can up and down contractile motion part, which is controllable.
By the contraction of bracket itself, realize that the controllable of hydraulic cylinder 300 moves up and down.
Further, output rod 310 is fixedly connected with tiling panel 200.
When the panel 200 that tiles is separately positioned with hydraulic cylinder 300, above-mentioned set function can satisfy.But it will lead in this way
It needs that manually tiling panel 200 is placed on the simulation material of compacting every time, the panel in need that will tile after the completion of compacting
200 take out, and operation in this way is not easy.Therefore, the present embodiment provides a kind of tiling panels 200 to be fixed at the one of output rod 310
Mode at end, tiling panel 200 can be moved with the movement of output rod 310, be equally able to achieve it is set be densified to it is closely knit
Consistent requirement is spent, and facilitates and is operated.
Further, Fig. 1 is please referred to, experimental box body 100 is distributed in cuboid, and accommodating cavity is in the upside of experimental box body 100
Opening is formed, experimental box body 100 has the side of dismountable a pair of opposite opposition.
In tool there are four placing simulation material in the experimental box body 100 of the cuboid of all sides, and it is densified to pre-
If height.It, can be by one of experimental box body 100 or under a pair of of side disassembly after the completion of physical simulation modelling
Come, is conducive to be observed during simulating Seam Mining.
Further, referring to figure 2., the bottom face of experimental box body 100 is equipped with multiple strain-types being evenly spaced on
Whether sensor 120 is identical with the stress of the detection all areas when simulation material is acted on by output rod 310.
When being compacted to simulation material, there can be such a situation, operator is adding standard into accommodating cavity
The simulation material got ready and when tiling as far as possible, the storage of the simulation material of partial region is inadequate sometimes, and causes to mention at this
Set compacting operation is carried out for enough simulation materials.I.e. in the simulation material of other parts going out in tiling panel 200
Be compacted under power, the simulation material of the part still fail with tiling panel 200 contact and by power.What is be arranged below at this time answers
Sensor data detected and normal condition have a bigger difference when change, operator can according to the measurement data of sensor and
Consider whether all compacting simulation materials are densified to predetermined state.
Embodiment 2
Referring to figure 2., the present embodiment provides a kind of Seam Mining physical simulations to test packing method, uses implementation
Seam Mining physical simulation in example 1 tests filling device.And use following steps:
Step a: by layered material aequum single in the model calculated, the ingredient of corrresponding quality is weighed, and will be each
Kind ingredient is in agitating device；
Step b: ingredient is mixed thoroughly, and suitable water is measured from bucket, is poured into agitating device, is stirred immediately, is prevented
Only grumeleuse, the ingredient being individually layered stirred evenly form the simulation material being individually layered, simulation material are poured into accommodating cavity,
The default power output of the output rod 310 of hydraulic cylinder 300, simulation material by tiling panel 200 active force and by uniform compaction；
Step c: it is arbitrarily crossed every 10cm to make rock joint with wall knife on the surface of simulation material, then uniform on its surface
Ground sprinkles a stratus female powder to simulate level, is again smoothed out surface with trowel；
Step d: successively successively being implemented the material of other layerings by above step a to step c, until the mould of all layerings
Quasi- material is fitted into accommodating cavity, realizes simulation by the way of adding counterweight for failing the simulation material of top layer of simulation,
Form model；
Step e: after spontaneously drying and stablizing, a pair of mutually contradictory side in experimental box body 100 is disassembled；
Step f: it is white to the outer surface chalk powder in experimental observation face dismantling 100 side of experimental box body and being formed, and
The red grid lines 130 of 10cm × 10cm is drawn in outer surface, scale is respectively set in the left side, right side and downside along the side
140。
Rock stratum is the coal dust conduct using sand as aggregate in the similar experiment material that experimental model provided in this embodiment is chosen
Coal seam, which is laid with, to be used, and gypsum, chalk powder are gelling agent.
By layered material aequum single in the model calculated, the ingredient of corrresponding quality is weighed, corresponding matter herein
Amount refers to being selected according to the compression strength for being laid with rock stratum with colon, and the size of binding model successively calculates each layered material
Dosage.It is distributed and its is matched according to various rock stratum, first pass through the totality of the 100 pre-placing material of experimental box body of manufactured model
Product, by the bulk density of the volume and cast material, respectively obtains the gross mass of all material in each rock stratum.Pass through proportion again
Number, the quality for needing certain material in coal seam and rock stratum is calculated, carries out being mixed to form simulation material.
Ingredient is mixed thoroughly, suitable water is measured from bucket, is poured into agitating device, is stirred immediately, grumeleuse is prevented.
Suitable water herein needs rule of thumb to measure, which grumeleuse does not occur when to be uniformly mixed with ingredient and is
It is quasi-.
Filling device is tested using above-mentioned Seam Mining physical simulation, the material of each layering can be densified to
The consistent degree of compactness, emulation mode are good.
Further, referring to figure 3., it is additionally provided with device for excising 400, device for excising 400 is used for will be after the compacting of every layering
Simulation material in be more than preset height part cut off.Device for excising 400 includes the vertical bar 410, slidably with scale
The horizon bar 420 that ground is set in vertical bar 410 and the cutter 430 being slidably disposed on horizon bar 420.
By device for excising 400, height i.e. thickness after can control the simulation material compacting of each layering obtains standard
Layering, be conducive to carry out simulated experiment.Correspondingly, there is the limitation of spatial position to moveable cutter 430.Vertical bar
410 are arranged vertically at one side of experimental box body 100, when being cut, change height locating for horizon bar 420, make
Obtain the position that cutter 430 are in suitable level height.The level height refers at the preset height of corresponding simulation material.
Then the transverse shifting in the horizontal direction on horizon bar 420 of cutter 430, is cut, and extra simulation material is removed.It should
Movement can be by electronic realization, can also be by manually realizing.Correspondingly, cutter 430 are not necessarily limited to the form of cutter.
Further, preset height proportionally carries out reducing setting according to the actual conditions of working face of coal seam log sheet
It sets, ratio includes 1:50,1:100,1:200.
In the experimental box body 100 of set specification, according to the actual conditions of working face of coal seam log sheet, contract in proportion
It is small, the size of suitable size is occupied in experimental box body 100 to the height after reducing, which is the default height of every layering
Degree.In the case where scaled, preset height can not be too small, expands strain when carrying out simulated experiment as far as possible, so that real
It tests obvious as the result is shown.Ratio includes 1:50,1:100,1:200, is subject to suitable actual conditions, and integer ratio is conducive to size
Conversion.
Further, experimental box body 100 is arranged in cuboid, and length 2m, width 0.3-0.6m are highly 1.4m.
The present embodiment provides a kind of experimental box body 100 of rectangular shape, long 2m, wide 0.3-0.6m, high 1.4m is whole in narrow rectangular
Shape can preferably embody experimental status in simulation.
Further, two cameras are additionally provided with, wherein a fixed setting, for observing the position of mining active process overlying rock
The change in displacement situation in journey and mining active process is moved past, wherein one is movably disposed, for observing working face back upper place area
The rock self-open dynamic change in domain, gained image data import in computer and carry out digital image analysis.It is additionally provided with one
Data acquisition device, for the base sheet stresses data acquisition in mining active process.
Small scale 140 there are two also setting up, one is fixed on the frame of experimental box body 100, claps for the camera of fixed setting
Take the photograph use；One shoots use with moveable camera.
Specifically, digital picture is analyzed, crack evolutionary process in selective analysis model mining active process.
More, reference is equipped with multiple strain gauge transducers being evenly spaced on the bottom face of experimental box body 100
120.It is also possible here to use several strain gauge transducers 120, are determined according to model length, and the model of long 2m needs 40 and answers
The model of variant sensor 120, long 3m needs 60 sensors.By obtaining to stress variation observation is carried out in mining active process
Stress distribution.
Strain gauge transducer 120 acquires information, and the base sheet stresses regularity of distribution is tested using load cell, passes through pressure gauge
Calculation machine data collection system is handled.Stress distribution law in overlying strata is tested using resistance-strain type micro pressure box, is led to
It crosses static resistance deformeter test direct labor and reads data.The specific method is as follows: each sensor is numbered；To each
A sensor is calibrated, and keeps calibration file；The time interval of stress data acquisition is set；It extracts in experimentation
Stress data.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of Seam Mining physical simulation tests filling device, it is characterised in that:
To contain the experimental box body of simulation material, the experimental box body has accommodating opening upward；
Hydraulic cylinder, the hydraulic cylinder are configured at outside the experimental box body, and the hydraulic cylinder is configured with output rod, and the output rod can
It is protruded into the experimental box body across accommodating opening；
Tile panel, and the tiling panel is configured at the simulation material upper surface, and the tiling panel is in the output
The simulation material is squeezed under the driving force of bar.
2. Seam Mining physical simulation according to claim 1 tests filling device, it is characterised in that: the output
Bar is fixedly connected with the tiling panel.
3. Seam Mining physical simulation according to claim 1 tests filling device, it is characterised in that: described hydraulic
Cylinder is configured as being arranged movably in a vertical direction.
4. Seam Mining physical simulation according to claim 1 tests filling device, it is characterised in that: the experiment
Cabinet is distributed in cuboid, and the accommodating cavity forms opening in the upside of the experimental box body, and the experimental box body has removable
The side of the opposite opposition of a pair unloaded.
5. Seam Mining physical simulation according to claim 1 tests filling device, it is characterised in that: the experiment
The bottom face of cabinet be equipped with multiple strain gauge transducers being evenly spaced on, in the simulation material by the output
Whether the stress of detection all areas is identical when bar acts on.
6. a kind of Seam Mining physical simulation tests packing method, including coal seam of any of claims 1-5
Adopt animal reason similarity simulation experiment filling device, it is characterised in that: the following steps are included:
Step a: by layered material aequum single in the model calculated, ingredient is weighed, and by various ingredients mounted in stirring
In device；
Step b: ingredient is mixed thoroughly, and water is measured from bucket, is poured into agitating device, is stirred immediately, and grumeleuse is prevented, stirring
The ingredient being uniformly individually layered forms the simulation material being individually layered, and simulation material is poured into the accommodating cavity, the liquid
The default power output of the output rod of cylinder pressure, the simulation material by the tiling panel active force and by uniform compaction；
Step c: it is arbitrarily crossed every 10cm to make rock joint with wall knife on the surface of simulation material, then is uniformly spread on its surface
Upper stratus female powder smoothes out surface to simulate level, with trowel；
Step d: successively successively being implemented the material of other layerings by above step a to step c, until the simulation material of all layerings
Material is fitted into the accommodating cavity, realizes simulation by the way of adding counterweight for failing the simulation material of top layer of simulation,
Form model；
Step e: after spontaneously drying and stablizing, a pair of mutually contradictory side in the experimental box body is disassembled；
Step f: it is white to the outer surface chalk powder in experimental observation face dismantling the experimental box body side and being formed, and outside
The red grid lines of 10cm × 10cm is drawn on surface, and scale is respectively set in the left side, right side and downside along the side.
7. Seam Mining physical simulation according to claim 6 tests packing method, it is characterised in that: be additionally provided with and cut
Except device, the device for excising is used to cut off in the simulation material after the compacting of every layering more than the part of preset height；
The device for excising includes vertical bar with scale, the horizon bar that is slidably disposed in the vertical bar and can
The cutter being slidingly arranged on the horizon bar.
8. Seam Mining physical simulation according to claim 7 tests packing method, it is characterised in that: described default
Height proportionally carries out diminution setting according to the actual conditions of working face of coal seam log sheet, and ratio includes 1:50,1:
100、1:200。
9. Seam Mining physical simulation according to claim 6 tests packing method, it is characterised in that: the experiment
Cabinet is arranged in cuboid, and length 2m, width 0.3-0.6m are highly 1.4m.
10. Seam Mining physical simulation according to claim 6 tests packing method, it is characterised in that: be additionally provided with
Two cameras a, wherein fixed setting, the position in displacement process and mining active process for observing mining active process overlying rock
Situation of change is moved, wherein one is movably disposed, the rock self-open dynamic for observing working face back upper place region becomes
Change, gained image data imports in computer and carries out digital image analysis；
It is additionally provided with a data acquisition device, for the base sheet stresses data acquisition in mining active process.
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