CN207198149U - One kind is based on numerical simulation study close-in seamses group's water-retaining production experimental provision - Google Patents
One kind is based on numerical simulation study close-in seamses group's water-retaining production experimental provision Download PDFInfo
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- CN207198149U CN207198149U CN201720185696.9U CN201720185696U CN207198149U CN 207198149 U CN207198149 U CN 207198149U CN 201720185696 U CN201720185696 U CN 201720185696U CN 207198149 U CN207198149 U CN 207198149U
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Abstract
It the utility model is related to one kind and be based on numerical simulation study close-in seamses group's water-retaining production experimental provision, including analog simulation test stand, floor strata, overlying rock, loading device, lower coal seam and upper coal seam.Inbreak belt, crack belt and bending subsidence belt are provided with overlying rock.Water barrier and water-bearing layer are provided with bending subsidence belt.If inbreak belt and crack belt are formed by stacking by the prefabricated rock stratum of dried layer.Prefabricated sillar in every layer of prefabricated rock stratum includes prefabricated sillar body, rubber layer and color layer.The upper and lower surface of prefabricated rock stratum bonds layer of non-woven fabric adhesive tape respectively in the belt of crack.Heater is provided with the upper surface of every layer of prefabricated rock stratum.The utility model dismounting is easy, laying physical model is convenient, efficiently, the characteristics of based on numerical simulation, the destruction stable law and water producing fractures situation of change of the accurate and visual simulation close-in seamses group's repeated mining overlying strata water barrier of energy, can provide accurate information for close-in seamses group's water-retaining production.
Description
Technical field
It the utility model is related to a kind of analog simulation experimental device, and in particular to one kind is based on numerical simulation study low coverage coal
Layer group's water-retaining production experimental provision.
Background technology
The large scale mining of coal can cause the very big destruction of underground reservoir, bring the very big of earth's surface and groundwater resources
Waste.Meanwhile water damage causes serious economic loss and casualties to the utilization of coal resources.Water protection mining is exactly
Under the influence of Seam Mining, the structure of water barrier is not destroyed；Though or have certain damage, can still recover after certain time, most
The water conservation of limits.The repetition exploitation of close-in seamses group inevitably causes multiplicating to disturb Strata Overlying The Seam
It is dynamic, cause the stability heavy damage of earth's surface water barrier, and then cause soil erosion, brought challenges for water-retaining production.
The destruction stable law for studying water barrier is most important to water-retaining production.Water conservation is opened under research close-in seamses group at present
Adopt Overburden Rock Failure movement law and mainly use two methods of numerical simulation and analog simulation, numerical simulation can easily efficiently
Simulation calculates the secondary or changing rule of overlying strata crack and water barrier in the case of repeatedly adopting, but because its difficulty is too big, operates
Personnel are difficult to accurately hold various parameters setting, cause the accuracy of result of the test and confidence level relatively low；Utilize simulated test frame
When carrying out similarity simulation experiment, operating personnel are wasted time and energy, and the test period is very long, and because each test model is being molded
Had differences in means and method, lead to not ensure each analog simulation test specimen and the uniformity of modeling experiment, therefore
Result of the test it is repeated poor, result of the test is uncontrollable, and error is very big；In addition, existing physical simulation experiment
Whether there is crack to judge whether water barrier is destroyed according only to observation water proof layer surface, such method, which is difficult to accurately draw, to be covered
The destruction of water barrier and overlying strata water producing fractures changing rule in rock.In view of the above-mentioned problems, need redesign is a kind of can be quick accurate
The really analog simulation experimental device of simulation close-in seamses repeated mining water proof damage layer and overlying strata water producing fractures situation of change.
The content of the invention
In order to solve the above technical problems, the utility model provides, a kind of dismounting is easy, laying physical model is convenient, high
Effect, the characteristics of being based on numerical simulation, can accurate and visual simulation close-in seamses group's repeated mining overlying strata water barrier destruction it is stable
The analog simulation experimental device of rule and water producing fractures situation of change, it can be provided for close-in seamses group's water-retaining production accurate
Information, and then the reasonable of close-in seamses group's water-protection coal-mining method different under different hydrogeologic conditions can be determined.
The utility model is realized by following technical proposals：
One kind is based on numerical simulation study close-in seamses group's water-retaining production experimental provision, including analog simulation test stand, bottom
Slate layer, overlying rock, loading device, the lower coal seam above floor strata and the upper coal seam below overlying rock.
There is interval rock stratum between upper coal seam and lower coal seam.The bottom of analog simulation test stand is provided with support bottom plate, it is characterised in that overlying
The inbreak belt positioned at upper coal seam top, the crack belt positioned at inbreak belt top are provided with rock stratum and on the belt of crack
The bending subsidence belt in portion.Provided with the water barrier at the top of the belt of crack and at the top of water barrier in bending subsidence belt
Water-bearing layer.If inbreak belt and crack belt are formed by stacking by the prefabricated rock stratum of dried layer.Every layer of prefabricated rock stratum is by some prefabricated rocks
Block forms.Length direction close-packed arrays of the prefabricated sillar along analog simulation test stand.Prefabricated sillar in every layer of prefabricated rock stratum is equal
Including prefabricated sillar body, rubber layer and color layer.Prefabricated sillar body is by the lithology of actual rock stratum by sand, gypsum, carbon
Sour calcium powder and water are prefabricated to be formed.Rubber layer is coated on the outer surface of sillar body.Color layer is one layer and sticked in rubber layer surface
Anhydrous slufuric acid copper powders.The size of prefabricated sillar is less than the size of prefabricated sillar in the belt of crack in inbreak belt.Fissure zone
The upper and lower surface of prefabricated rock stratum bonds layer of non-woven fabric adhesive tape respectively in layer.It is provided with the upper surface of every layer of prefabricated rock stratum
Heater.By the way that if inbreak belt and crack belt are made by the prefabricated rock stratum superposition of dried layer, can substantially increase
The test efficiency of physical simulation, the test period is shortened, while ensure that the uniformity of model test.Prefabricated sillar body
Surface be provided with one layer of rubber layer and color layer, by the compression stretching of rubber layer, simulate bending and the situation of crack belt；
, can accurate and visual simulation repeated mining overlying strata by being used as display layer in the rubber layer surface anhydrous cupric sulfate powder of prefabricated sillar
The destruction stable law and water producing fractures situation of change of water barrier；Pass through the upper and lower surface of the prefabricated rock stratum in coal seam in the belt of crack
Non-woven tape is bonded, using the performance for being broken and bending of Non-woven tape, not only simulates rock stratum in the belt of crack
Pulling force during fracture, while also simulate the state being hinged between sillar after fracturation and motion feature.
Further, above-mentioned analog simulation test stand includes support bottom plate, left column, right column, front apron and rear baffle.
Left column, right column are fixedly connected on base both ends vertically respectively, are to be parallel to each other between left column, right column.Front apron and
Rear baffle is detachably flexibly connected between two columns.Front apron and rear baffle are transparent baffle, facilitate test operation people
Member clearly observes the change of scale model.
Further, above-mentioned support bottom plate is made up of side by side multiple steel plates.The bottom of each steel plate is provided with a control and risen
The hydraulic jack of drop.By the way that support bottom plate is arranged into liftable structure, overlying strata crack becomes after can repeatedly being adopted with analog study
Change feature.
Further, above-mentioned upper coal seam and lower coal seam form by several oil sacs.Each oil sac tries along analog simulation
Test the length direction of frame close-packed arrays successively.Oil sac is square body, is scalable oil sac, its material is high-strength rubber.In mould
When intending coal seam excavation, oil mass in oil sac can be adjusted according to being actually needed, convenient power-saving simulates different mining heights.
Further, strain gauge and displacement transducer are provided with above-mentioned rock stratum prefabricated in the belt of crack, stress passes
Sensor and displacement transducer are connected by wire with data collecting instrument and computer.
The utility model has the advantage that compared with prior art：
(a) analogue means dismounting is easy, and laying physical model is convenient, experiment operator can by before transparent,
Rear baffle understands the destruction situation of change in overlying strata crack in observation scale model；
(b) relative to prior art, if the utility model by by inbreak belt and crack belt by the prefabricated rock stratum of dried layer
Superposition is made, and can substantially increase the test efficiency of physical simulation, shortens the test period, pre- in test material
Sillar processed is reusable, ensure that the uniformity of model test, accurately can quickly show that close-in seamses group is covered under repeatedly adopting
Rock water producing fractures variation characteristic situation；
(c) by the way that support bottom plate is arranged into liftable structure, overlying strata Crack change after can repeatedly being adopted with analog study
Feature；
(d) this experimental provision can the accurate and visual destruction stable law and water guide for simulating close-in seamses group's overlying strata water barrier
The analog simulation experimental device of Crack change situation, accurate information can be provided for close-in seamses group's water-retaining production, and then
The reasonable of close-in seamses group's water-protection coal-mining method different under different hydrogeologic conditions can be determined.
Brief description of the drawings
Accompanying drawing 1 is a kind of knot based on numerical simulation study close-in seamses group's water-retaining production experimental provision of the present utility model
Structure schematic diagram；
In figure：1- analog simulation test stands；2- steel plates；3- floor stratas；Coal seam under 4-；5- intervals rock stratum；The upper coal seams of 6-；
7- inbreak belts；8- cracks belt；9- bending subsidence belts；10- loading devices；11- hydraulic jacks；12- overlying rocks；13-
Water barrier；14- water-bearing layers.
Embodiment
The utility model is further described below based on the drawings and specific embodiments, so as to skill in the art
Art personnel understand the utility model.
One kind is based on numerical simulation study close-in seamses group's water-retaining production experimental provision, including analog simulation test stand 1, bottom
Slate layer 3, overlying rock 12, loading device 10, the lower coal seam 4 above floor strata 3 and positioned at the lower section of overlying rock 12
Upper coal seam 6.There is interval rock stratum 5 between upper coal seam 6 and lower coal seam 4.The bottom of analog simulation test stand 1 is provided with support bottom plate,
Characterized in that, the inbreak belt 7 positioned at the upper top of coal seam 6 is provided with overlying rock 12, positioned at the crack on the top of inbreak belt 7
Belt 8 and the bending subsidence belt 9 positioned at the top of crack belt 8.It is provided with bending subsidence belt 9 positioned at the top of crack belt 8
Water barrier 13 and positioned at the water-bearing layer 14 at the top of water barrier 13.If inbreak belt 7 and crack belt 8 are folded by the prefabricated rock stratum of dried layer
Add and form.Every layer of prefabricated rock stratum forms by some prefabricated sillars.Length direction of the prefabricated sillar along analog simulation test stand 1 is tight
Solid matter arranges.Prefabricated sillar in every layer of prefabricated rock stratum includes prefabricated sillar body, rubber layer and color layer.Prefabricated sillar body
By actual rock stratum lithology is by sand, gypsum, calcium carbonate powder and water is prefabricated forms.Rubber layer is coated on the outer of sillar body
Surface.Color layer is one layer of anhydrous slufuric acid copper powders sticked in rubber layer surface.The size of prefabricated sillar is less than in inbreak belt
The size of prefabricated sillar in the belt of crack.The upper and lower surface of prefabricated rock stratum bonds layer of non-woven fabric respectively in the belt of crack
Adhesive tape.Heater is provided with the upper surface of every layer of prefabricated rock stratum.
Analog simulation test stand 1 includes support bottom plate, left column, right column, front apron and rear baffle.Left column, the right side are vertical
Post is fixedly connected on base both ends vertically respectively, is to be parallel to each other between left column, right column.Front apron and rear baffle are with two
Detachably it is flexibly connected between column.Front apron and rear baffle are transparent baffle.Support bottom plate is by multiple arranged side by side group of steel plates 2
Into.The bottom of each steel plate 2 is provided with the hydraulic jack 11 of a control lifting.Upper coal seam 6 and lower coal seam 4 are by several oil sacs
Composition.Each length direction of the oil sac along analog simulation test stand 1 close-packed arrays successively.Oil sac is square body, is scalable oil
Capsule, its material are high-strength rubber.Strain gauge and displacement transducer are provided with prefabricated rock stratum in the belt of crack, stress passes
Sensor and displacement transducer are connected by wire with data collecting instrument and computer.
When carrying out analog simulation experiment using the present apparatus, it is necessary first to rapid to study inbreak belt using numerical simulation
With the influence of the different size of prefabricated sillar in the belt of crack to result of the test, it is determined that rational prefabricated sillar size；Then well
The physical and mechanical property of lower actual different rock-layers, carry out the prefabricated sillar of proportioning trial-production different rock-layers.
Embodiment of above only not limits the technical scheme described by the utility model to illustrate the utility model；
Therefore although this specification has been carried out being described in detail with reference to above-mentioned each embodiment to the utility model, ability
Domain it is to be appreciated by one skilled in the art that still can be modified to the utility model or equivalent substitution；And all do not take off
Technical scheme and its improvement from spirit and scope of the present utility model, it all should cover in claim model of the present utility model
Among enclosing.
Claims (7)
1. one kind is based on numerical simulation study close-in seamses group's water-retaining production experimental provision, including analog simulation test stand（1）, bottom
Slate layer（3）, overlying rock（12）, loading device（10）, positioned at floor strata（3）The lower coal seam of top（4）With positioned at overlying
Rock stratum（12）The upper coal seam of lower section（6）；Upper coal seam（6）With lower coal seam（4）Between have interval rock stratum（5）；The analog simulation examination
Test frame（1）Bottom be provided with support bottom plate, it is characterised in that the overlying rock（12）In be provided be located at upper coal seam（6）Top
Inbreak belt（7）, positioned at inbreak belt（7）The crack belt on top（8）With positioned at crack belt（8）The bending subsidence on top
Belt（9）；The bending subsidence belt（9）In be provided be located at crack belt（8）The water barrier at top（13）With positioned at water barrier
（13）The water-bearing layer at top（14）；The inbreak belt（7）With crack belt（8）If it is formed by stacking by the prefabricated rock stratum of dried layer；Often
The prefabricated rock stratum of layer forms by some prefabricated sillars；Prefabricated sillar is along analog simulation test stand（1）Length direction close-packed arrays；
Prefabricated sillar in every layer of prefabricated rock stratum includes prefabricated sillar body, rubber layer and color layer；Prefabricated sillar body is by real
The lithology of border rock stratum is by sand, gypsum, calcium carbonate powder and water is prefabricated forms；Rubber layer is coated on the outer surface of sillar body；
Color layer is one layer of anhydrous slufuric acid copper powders sticked in rubber layer surface；The size of prefabricated sillar is less than fissure zone in inbreak belt
The size of prefabricated sillar in layer；The upper and lower surface of prefabricated rock stratum bonds layer of non-woven fabric adhesive tape respectively in the belt of crack；
Heater is provided with the upper surface of every layer of prefabricated rock stratum.
2. one kind as claimed in claim 1 is based on numerical simulation study close-in seamses group's water-retaining production experimental provision, its feature
It is, the analog simulation test stand（1）Including support bottom plate, left column, right column, front apron and rear baffle；Left column, the right side
Column is fixedly connected on base both ends vertically respectively, is to be parallel to each other between left column, right column.
3. one kind as claimed in claim 2 is based on numerical simulation study close-in seamses group's water-retaining production experimental provision, its feature
It is, described front apron and rear baffle are transparent baffle.
4. one kind as claimed in claim 3 is based on numerical simulation study close-in seamses group's water-retaining production experimental provision, its feature
It is, the support bottom plate is by multiple steel plates（2）Composition side by side；Each steel plate（2）Bottom be provided with one control lifting liquid
Compressing cylinder（11）.
5. one kind as claimed in claim 4 is based on numerical simulation study close-in seamses group's water-retaining production experimental provision, its feature
It is, described upper coal seam（6）With lower coal seam（4）Formed by several oil sacs；Each oil sac is along analog simulation test stand（1）
Length direction close-packed arrays successively.
6. one kind as claimed in claim 5 is based on numerical simulation study close-in seamses group's water-retaining production experimental provision, its feature
It is, the oil sac is square body, is scalable oil sac, its material is high-strength rubber.
7. one kind as claimed in claim 6 is based on numerical simulation study close-in seamses group's water-retaining production experimental provision, its feature
It is, is provided with strain gauge and displacement transducer, strain gauge and displacement transducer in prefabricated rock stratum in the belt of crack
It is connected by wire with data collecting instrument and computer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720185696.9U CN207198149U (en) | 2017-02-28 | 2017-02-28 | One kind is based on numerical simulation study close-in seamses group's water-retaining production experimental provision |
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| CN201720185696.9U CN207198149U (en) | 2017-02-28 | 2017-02-28 | One kind is based on numerical simulation study close-in seamses group's water-retaining production experimental provision |
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| CN207198149U true CN207198149U (en) | 2018-04-06 |
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