CN205262774U - Neighbouring confined aquifer exploitation strata displacement experimental apparatus - Google Patents
Neighbouring confined aquifer exploitation strata displacement experimental apparatus Download PDFInfo
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- CN205262774U CN205262774U CN201521046139.6U CN201521046139U CN205262774U CN 205262774 U CN205262774 U CN 205262774U CN 201521046139 U CN201521046139 U CN 201521046139U CN 205262774 U CN205262774 U CN 205262774U
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- rock stratum
- artesian aquifer
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Abstract
The utility model provides a neighbouring confined aquifer exploitation strata displacement experimental apparatus, the simulation frame that is equipped with simulation coal petrography layer in including with bury underground in a plurality of confined aquifer analogue means in the simulation rock stratum on simulation frame upper portion, a plurality of confined aquifer analogue means arrange in proper order along simulation frame length direction and arrange, confined aquifer analogue means includes base, back timber, light -duty hydraulic cylinder, two spinal branch vaulting poles, high pressure fuel pipe, hydraulic pump, answers force transducer, data line and data collection station, light -duty hydraulic cylinder includes piston rod, cylinder and back flange, answers force transducer to set up in the upper end of piston rod, will answer force transducer to link to each other with data collection station through the data line. The experimental apparatus can be fine reproduction confined aquifer stress transfer characteristic, simple structure, loading precision are high, big or small adjustable, the water -bearing stratum water pressure of water pressure and deflection are easily surveyd.
Description
Technical field
The utility model belongs to analog simulation experimental provision and method and technology field, especially relates to a kind of contiguous holdingPress water-bearing layer mining rock stratum to move experimental provision.
Background technology
The thick loose that covers 200～600m left and right on the mining area institute mining coal seams such as China East China, North China, northeast containsWater layer. Rule of thumb, generally stay in early days and establish 80m safety pillar under wa ter bodies, press coal amount to exceed 10,000,000,000 tons. As AnhuiPan Ji Xie Qiao mining area, Huainan, the loose bed thickness 169～437m of Quaternary system in district, is huge thick loose strong aquifer, underMoisture group of portion directly contacts with bedrock surface, and part is thin clay layer, and watery is strong, and the water yield is large, therefore, and each ore depositWhen design, all stay and establish 80m safety pillar under wa ter bodies, barrier pillar reserves reach 600,000,000 tons, because seam inclination is little, dullA large amount of coal resources. By improving the back production upper limit, dwindle barrier pillar height, can extend mine the first waterThe flat length of service, alleviates and takes over anxiety, improves coal recovery rate. But due to the raising of the exploitation upper limit,Coal roof lithologic is subject to the impact of depositional environment and wind oxidized zone and variation has occurred, and working face roof fall usually occursAnd the great serious accident of burying frame.
Equivalent Materials Testing has that research cost is low, the cycle is short, visual pattern, can strict control simulation pairThe advantages such as the main parameters of elephant. Therefore, in rock mass mechanics, underground engineering, obtained application widely, especiallyIn mining subject, Equivalent Materials Testing has obtained being applied even more extensively. Analog simulation test method is mineOne of pressure and the main research means of CONTROL OF STRATA MOVEMENT.
The authenticity of analog simulation experimental result depends on model and simulated the similarity of experimental subjects, or simulationThe really degree of experiment condition. But because the simulated experiment condition of artesian aquifer is difficult on simulation frame realExisting, make to become the contiguous artesian aquifer mining rock stratum of impact and move the Main Bottleneck of research. And carry out at presentThe simulated experiment of artesian aquifer is mostly to carry out at the environment of a relative closure, as patentCN201037819Y discloses a kind of experimental provision of unconsolidated confined aquifer load transfer function, according to looseArtesian aquifer load character, by being equipped with the sealed water bag simulation unconsolidated confined aquifer of water sand aggregate, researchUnconsolidated confined aquifer on thin basement rock stope key strata compound breakage impact mechanism. Although but water sand pocket hasEnough flexibilities, but during first weighting, there is step and sink in rock stratum, when step deflection exceedes waterWhen the deformation range of sand pocket, water sand pocket can not fully contact with rock stratum, can have influence on simulate effect; In addition, existThe environment Imitating unconsolidated confined aquifer of sealing brings the observation of loading accuracy, water-bearing layer hydraulic pressure and deflectionCertain difficulty.
Utility model content
For above-mentioned technical problem, the purpose of this utility model is to provide a kind of contiguous artesian aquifer exploitation rockThe mobile experimental provision of layer, simple in structure, loading accuracy is high, big or small adjustable, the water-bearing layer hydraulic pressure of hydraulic pressure and deflectionBe easy to observation.
The technical solution adopted in the utility model is:
A kind of contiguous artesian aquifer mining rock stratum moves experimental provision, and the simulation of simulation coal rock layer is housed in comprisingFrame and be embedded in several artesian aquifer analogue means in the simulation rock stratum on described simulation frame top, severalDescribed artesian aquifer analogue means is arranged in order layout, described artesian aquifer along described simulation frame length directionAnalogue means comprise base, back timber, light hydraulic oil cylinder, two support bars, high-pressure oil pipe, hydraulic pump, shouldPower sensor, data wire and data acquisition unit, two described support bars are arranged at respectively described light hydraulic oil cylinderBoth sides, described light hydraulic oil cylinder comprises piston rod, cylinder barrel and rear flange, described rear flange and described cylinder barrelLower end be fixedly connected with, described rear flange is fixed on described base, one end of described high-pressure oil pipe and described lightType hydraulic jack is connected, and the other end stretches out outside described simulation frame and is connected with described hydraulic pump, described hydraulic pump outletPlace is provided with check valve and Pressure gauge, and described strain gauge is arranged at the upper end of described piston rod, by described numberAccording to line, described strain gauge is connected with described data acquisition unit, described in the minimum constructive height of described support bar is greater thanThe minimum constructive height of light hydraulic oil cylinder, the end of the described base of adjacent described artesian aquifer analogue means joinsTouch, the end of the described back timber of adjacent described artesian aquifer analogue means contacts.
Contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision, wherein, and described supportBar comprises inner and outer tubes, and the upper end of described inner tube is fixed on the lower surface of described back timber, the lower end of described outer tubeBe fixed on the upper surface of described base, the internal diameter of described outer tube is slightly larger than the external diameter of described inner tube, described inner tubeLower end can slide up and down along the inwall of described outer tube.
Contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision, wherein, described light-dutyThe operating pressure of hydraulic jack is 0.3～7.0MPa, is highly 120～195mm.
Contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision, wherein, and described back timberAll equate with the width H of described simulation frame with the length of described base.
Contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision, wherein, and described back timberBe less than 50mm with the width of described base.
Contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision, wherein, and described inner tubeExternal diameter be 20mm, the height of inner tube is 125mm, the height of outer tube is 120mm.
Contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision, wherein, and described inner tubeWall thickness be not less than 2mm.
Contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision, wherein, and described hydraulic pressureOn pump, be also provided with handle.
Contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision, wherein, and described inner tubeSurface be provided with scale.
Compared with the prior art, the utility model beneficial effect is presented as:
Contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision, can well reproduceArtesian aquifer Stress Transmission can cause light hydraulic oil cylinder in the time that strata movement feeds through to artesian aquiferPressure decreased, first can monitor by the strain gauge that is arranged in piston rod top, thereby can investigateThe time-space relationship of overlying strata motion and face advanced distance, piston rod is in upper stretching, and support bar extends,Can obtain simulating the step deflection that rock stratum occurs by reading the scale value of tube-surface in support bar, can simulateOverlying strata structure, water-bearing layer hydraulic pressure, key stratum intensity, working resistance of support and bedrock thickness are compound broken to key stratumDisconnected impact, reasonable in design, simple in structure, loading accuracy is high, big or small adjustable, the water-bearing layer hydraulic pressure of hydraulic pressure and changeShape amount is easy to observation, exploits the disrumpent feelings pressure rack of overlying strata and causes calamity mechanism, barrier pillar for carrying under artesian aquiferRationally determine etc. that research provides experiment condition.
Contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision, described light hydraulic oilThe operating pressure of cylinder is 0.3～7.0MPa, is highly 120～195mm, light hydraulic oil cylinder working pressure scopeBe 0.3～7.0MPa, can simulate the different hydraulic pressure sizes of artesian aquifer; Be highly 120～195mm, canSimulate various all-time high mining faces, can meet working face mining height needs; Can ensure before working face excavationRoof strata pressure can be delivered to floor strata by inner tube, and hydraulic jack is not crushed to death.
Contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision, described back timber and described inThe length of base all equates with the width H of described simulation frame, because in the time laying simulation rock stratum, at simulation frameTwo sides, front and back also needs to add channel-section steel, and artesian aquifer analogue means need to put in the time laying simulation rock stratum,So being preferably, back timber and base length can not be greater than the width H that simulates frame; In addition, simulate at artesian aquiferTop board simulation rock stratum also will be laid in device back timber top, so the length of back timber is preferably, to equal to simulate frame wide.
Contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision, the external diameter of described inner tubeFor 20mm, the height of inner tube is 125mm, and the height of outer tube is 120mm, is easy to weld inner tube.
Brief description of the drawings
Fig. 1 is the front view that contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision;
Fig. 2 is the cutaway view along A-A line in Fig. 1;
Fig. 3 is that the pressure-bearing that contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision containsThe structural representation of water layer analogue means;
Fig. 4 is that the pressure-bearing that contiguous artesian aquifer mining rock stratum described in the utility model moves experimental provision containsStructural representation after the piston rod of water layer analogue means rises.
In figure: 1, simulation frame, 2, base, 3, back timber, 4, light hydraulic oil cylinder, 41, piston rod, 42,Cylinder barrel, 43, rear flange, 5, support bar, 51, inner tube, 52, outer tube, 6, screw, 7, high-pressure oil pipe,8, hydraulic pump, 81, check valve, 82, Pressure gauge, 9, simulation rock stratum, 91, top board simulation rock stratum, 92,Base plate simulation rock stratum, 10, strain gauge, 11, data wire, 12, data acquisition unit, 13, handle, 14,Simulation coal seam, 15, balancing weight.
Below in conjunction with specific embodiments and the drawings, the utility model is described in further detail.
Detailed description of the invention
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of contiguous artesian aquifer mining rock stratum moves experiment dressPut, the simulation frame 1 of simulation coal rock layer is housed in comprising and is embedded in the simulation rock stratum 9 of simulating frame 1 topSeveral artesian aquifer analogue means, described in several, artesian aquifer analogue means is along simulation frame 1 length sideTo being arranged in order layout, described artesian aquifer analogue means comprises base 2, back timber 3, light hydraulic oil cylinder4, two support bars 5, some screws 6, high-pressure oil pipe 7, hydraulic pump 8, strain gauge 10, data wire11,13, two support bars of data acquisition unit 12 and handle 5 are arranged at respectively gently along simulation frame 1 widthThe both sides of type hydraulic jack 4, light hydraulic oil cylinder 4 comprises piston rod 41, cylinder barrel 42 and rear flange 43, afterFlange 43 is fixedly connected with the lower end of cylinder barrel 42, adopts some screws 6 that rear flange 43 is fixed on to base 2Upper, the cylinder diameter of light hydraulic oil cylinder 4 is 32mm, and operating pressure is 0.3～7.0MPa, and minimum constructive height is120mm, maximum height is 195mm, impulse stroke is 75mm; One end of high-pressure oil pipe 7 and light-duty liquidCompressing cylinder 4 is connected, and the other end stretches out outside simulation frame 1 and is connected with hydraulic pump 8, and hydraulic pump 8 exits are provided with listTo valve 81 and Pressure gauge 82, on hydraulic pump 8, be also provided with handle 13, the length of back timber 3 and base 2 is all and mouldThe width H that intends frame 1 is equal, and the width of back timber 3 and base 2 is less than 50mm, and back timber 3 and base 2 areRectangular steel plate, strain gauge 10 is arranged at the upper end of the piston rod 41 of light hydraulic oil cylinder 4, passes throughData wire 11 is connected strain gauge 10 with data acquisition unit 12, adjacent described artesian aquifer simulation dressThe end of the base 2 of putting contacts, and the end of the back timber 3 of adjacent described artesian aquifer analogue means contacts,The present embodiment is provided with 40 described artesian aquifer analogue means, and simulation frame length is 2m, artesian aquifer mouldThe width of intending the back timber 3 of device is 5cm;
Support bar 5 comprises inner tube 51 and outer tube 52, and the material of inner tube 51 and outer tube 52 is galvanized pipe, inner tube51 upper end is fixed by welding in the lower surface of back timber 3, and the lower end of outer tube 52 is fixed by welding in base2 upper surface; The external diameter of inner tube 51 is 20mm, and the internal diameter of outer tube 52 is slightly larger than the external diameter of inner tube 51, inThe lower end of pipe 51 can slide up and down along the inwall of outer tube 52, and the height of inner tube 51 is 125mm, outer tube 52Height is 120mm, and the wall thickness of inner tube 51 is not less than 2mm, can bear the load of rock stratum, top, inner tube 51Surface is provided with scale, can obtain simulating rock stratum 9 vertical deformation amounts by reading the value of scale; Support bar 5Minimum constructive height be greater than the minimum constructive height of light hydraulic oil cylinder 4, when top board simulation rock stratum, 91 pressure are greater than light-dutyThe support force of hydraulic jack 4, the pressure of top board simulation rock stratum 91 is delivered to base plate simulation rock by support bar 5In layer 92; Simulated coal seam 10 and adopted unload effects, when the pressure of top board simulation rock stratum 91 is less than light-duty liquidThe support force of compressing cylinder 4, highly pressurised liquid is injected into light hydraulic oil cylinder 4 through high-pressure oil pipe 7, piston rod 41Rise, thereby reach pressure constant state.
Contiguous artesian aquifer mining rock stratum described in the present embodiment moves the experimental technique of experimental provision, comprise asLower step:
(a) taking sand as aggregate, calcium carbonate, gypsum are cementing material, and borax is set retarder, at simulation frameIn 1, successively lay from lower to upper simulation rock stratum 9, in the simulation rock stratum 9 on simulation frame 1 top, bury several undergroundArtesian aquifer analogue means, by stretching out the high-pressure oil pipe 7 of simulating frame 1 outside by light hydraulic oil cylinder 4Be connected with hydraulic pump 27, at the upper ends strain gauge 10 of piston rod 41, and by data wire 11Strain gauge 10 is connected with data acquisition unit 12, then lays successively the top board simulation rock stratum in water-bearing layer91；
(b) simulation is after rock stratum 9 lays, place under field conditions (factors) 15 days air-dry, before test, first logicalCross hydraulic pump 8 highly pressurised liquid is injected to light hydraulic oil cylinder 4, piston rod 41 can be released by oil liquid pressure, topTightly back timber 3 times, and continue Slow loading and reach simulation artesian aquifer hydraulic pressure until Pressure gauge 82 shows,And place balancing weight 11, afterwards voltage stabilizing 2h on 91 tops, top board simulation rock stratum;
(c) step excavation is carried out in the simulation coal seam 14 of simulation frame 1 inside, adopt by data acquisition unit 12The data of collection strain gauge 10, gather once every 1s, simulation coal seam 14 after the each excavation of observation simultaneouslySimulation rock stratum, top 9 cranny development height, obtain the pass between cranny development height and advance of the face positionSystem;
(d) after each excavation, voltage stabilizing half an hour, wait simulate rock stratum 9 stable after, then carry out opening next timeDig, will ensure that in the overall process of excavation light hydraulic oil cylinder 4, in pressure constant state, is subject to mining influence, work as simulationWhen rock stratum 9 cranny development height feed through to the top board simulation rock stratum 91 of artesian aquifer, strata movement can make topThe pressure of template die plan rock stratum 91 is less than the support force of light hydraulic oil cylinder 4, and Pressure gauge 82 readings reduce, shakeHandle 13 is by highly pressurised liquid through high-pressure oil pipe 7 injection liquid compressing cylinders 4, and piston rod 41 rises, thereby reaches permanentPressure condition.
Above-described embodiment is described preferred embodiment of the present utility model, not to thisThe scope of utility model limits, and is not departing under the prerequisite of the utility model design spirit, and this area is commonVarious distortion and improvement that technical staff makes the technical solution of the utility model, all should fall into the utility modelIn the definite protection domain of claims.
Claims (9)
1. a contiguous artesian aquifer mining rock stratum moves experimental provision, it is characterized in that: several artesian aquifer analogue means in the simulation rock stratum (9) of simulating the simulation frame (1) of coal rock layer and being embedded in described simulation frame (1) top are housed in comprising, described in several, artesian aquifer analogue means is arranged in order layout along described simulation frame (1) length direction, described artesian aquifer analogue means comprises base (2), back timber (3), light hydraulic oil cylinder (4), two support bars (5), high-pressure oil pipe (7), hydraulic pump (8), strain gauge (10), data wire (11) and data acquisition unit (12), two described support bars (5) are arranged at respectively the both sides of described light hydraulic oil cylinder (4), described light hydraulic oil cylinder (4) comprises piston rod (41), cylinder barrel (42) and rear flange (43), described rear flange (43) is fixedly connected with the lower end of described cylinder barrel (42), described rear flange (43) is fixed on described base (2), one end of described high-pressure oil pipe (7) is connected with described light hydraulic oil cylinder (4), the other end stretches out outside described simulation frame (1) and is connected with described hydraulic pump (8), described hydraulic pump (8) exit is provided with check valve (81) and Pressure gauge (82), described strain gauge (10) is arranged at the upper end of described piston rod (41), by described data wire (11), described strain gauge (10) is connected with described data acquisition unit (12), the minimum constructive height of described support bar (5) is greater than the minimum constructive height of described light hydraulic oil cylinder (4), the end of the described base (2) of adjacent described artesian aquifer analogue means contacts, the end of the described back timber (3) of adjacent described artesian aquifer analogue means contacts.
2. contiguous artesian aquifer mining rock stratum according to claim 1 moves experimental provision, it is characterized in that: described support bar (5) comprises inner tube (51) and outer tube (52), the upper end of described inner tube (51) is fixed on the lower surface of described back timber (3), the lower end of described outer tube (52) is fixed on the upper surface of described base (2), the internal diameter of described outer tube (52) is slightly larger than the external diameter of described inner tube (51), and the lower end of described inner tube (51) can slide up and down along the inwall of described outer tube (52).
3. contiguous artesian aquifer mining rock stratum according to claim 1 moves experimental provision, it is characterized in that: the operating pressure of described light hydraulic oil cylinder (4) is 0.3～7.0MPa, is highly 120～195mm.
4. contiguous artesian aquifer mining rock stratum according to claim 1 moves experimental provision, it is characterized in that: the length of described back timber (3) and described base (2) all equates with the width H of described simulation frame (1).
5. contiguous artesian aquifer mining rock stratum according to claim 1 moves experimental provision, it is characterized in that: the width of described back timber (3) and described base (2) is less than 50mm.
6. contiguous artesian aquifer mining rock stratum according to claim 2 moves experimental provision, it is characterized in that: the external diameter of described inner tube (51) is 20mm, the height of inner tube (51) is 125mm, and the height of outer tube (52) is 120mm.
7. contiguous artesian aquifer mining rock stratum according to claim 2 moves experimental provision, it is characterized in that: the wall thickness of described inner tube (51) is not less than 2mm.
8. contiguous artesian aquifer mining rock stratum according to claim 1 moves experimental provision, it is characterized in that: on described hydraulic pump (8), be also provided with handle (13).
9. move experimental provision according to the contiguous artesian aquifer mining rock stratum described in claim 2 or 6 or 7, it is characterized in that: the surface of described inner tube (51) is provided with scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201521046139.6U CN205262774U (en) | 2015-12-11 | 2015-12-11 | Neighbouring confined aquifer exploitation strata displacement experimental apparatus |
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| CN201521046139.6U CN205262774U (en) | 2015-12-11 | 2015-12-11 | Neighbouring confined aquifer exploitation strata displacement experimental apparatus |
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| CN205262774U true CN205262774U (en) | 2016-05-25 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372090A (en) * | 2015-12-11 | 2016-03-02 | 安徽理工大学 | Confined aquifer proximity mobile experiment device for exploiting rock stratum and method thereof |
| CN108627444A (en) * | 2018-05-14 | 2018-10-09 | 冯飞鸽 | A kind of mining ground simulator based on intelligent pressure control aquifer System |
-
2015
- 2015-12-11 CN CN201521046139.6U patent/CN205262774U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105372090A (en) * | 2015-12-11 | 2016-03-02 | 安徽理工大学 | Confined aquifer proximity mobile experiment device for exploiting rock stratum and method thereof |
| CN105372090B (en) * | 2015-12-11 | 2018-03-09 | 安徽理工大学 | A kind of neighbouring artesian aquifer mining rock stratum movement experimental provision and method |
| CN108627444A (en) * | 2018-05-14 | 2018-10-09 | 冯飞鸽 | A kind of mining ground simulator based on intelligent pressure control aquifer System |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160525 Termination date: 20161211 |