CN104729922A - Full tailing gel aggregate consolidation seepage combined testing device and testing method thereof - Google Patents
Full tailing gel aggregate consolidation seepage combined testing device and testing method thereof Download PDFInfo
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Abstract
The invention discloses a full tailing gel aggregate consolidation seepage combined testing device and a testing method thereof. The full tailing gel aggregate consolidation seepage combined testing device comprises a compression consolidation experiment mechanism, a seepage coefficient testing mechanism, a hydraulic servo mechanism and a sampling mechanism. The hydraulic servo mechanism can be used for carrying out constant-pressure grading loading on the compression consolidation experiment mechanism; the sampling mechanism is used for carrying out data acquisition processing to obtain a test sample sedimentation compression deformation curve, a pore water pressure change curve and the like; the seepage coefficient testing mechanism is used for commonly finishing determination of seepage coefficients of a test sample with the sampling mechanism under constant water head and variable water head conditions through the relation between the sampling mechanism and the compression consolidation experiment mechanism; and the aims that compression coefficients and seepage coefficients of full tailing gel aggregates can be measured at the same time, corresponding curve charts are drawn, and testing parameters are provided for full tailing treatment and calculation of stability of foundations and edge slopes are realized.
Description
Technical field
The present invention relates to mining engineering and technology field, particularly relate to a kind of crude tailings gelling aggregate seepage flow with consolidation combined test device and method of testing thereof.
Background technology
At present, the compression concretion instrument that China carries out confined compression test employing substantially successive loading mode is counterweight counterweight, is out of shape and measures with dial gauge, but compression process is very very long, every one-level loads needs 24 hours, and every one-level load sex change is stable all needs artificial judgment, adds test error; Current compressometer can not be sampled pore water pressure, can not obtain the conversion process that effective stress and super quiet hole are pressed, so compression and seepage consolidation are joined together to test significant.The measurement of permeability coefficient has two kinds of methods, hydrostatic head method and variable water level method, and current permeameter all according to single method design, fully can not merge the advantage of two kinds of methods.
Based on above-mentioned situation, in the urgent need to the crude tailings gelling aggregate seepage flow with consolidation combined test device that a kind of cost is low, reusable, easy and simple to handle, reach and measure crude tailings gelling aggregate compressibility coefficient, infiltration coefficient draw response curve figure, for crude tailings process, ground, slope stability calculate the object providing test parameters simultaneously.。
Summary of the invention
The object of the embodiment of the present invention is to propose a kind of crude tailings gelling aggregate seepage flow with consolidation combined test device, compression concretion experiment mechanism constant voltage stage loading is given by hydraulic servo, sampling mechanism is utilized to carry out data acquisition process, draw sample sedimentation compression deformation curve, pore water pressure change curve etc., authority contact is tested by sampling mechanism and compression concretion by infiltration coefficient experiment mechanism, and jointly complete the mensuration of sample infiltration coefficient under constant head and varying head condition with sampling mechanism, reach and measure crude tailings gelling aggregate compressibility coefficient simultaneously, infiltration coefficient also draws response curve figure, for crude tailings process, ground, slope stability calculates the object providing test parameters.To achieve these goals, the present invention adopts following technical scheme:
A kind of crude tailings gelling aggregate seepage flow with consolidation combined test device, comprising:
Compression concretion experiment mechanism, comprise framework, sample groove, overflow groove, permeable stone, seepage flow spillway hole, cover plate for sealing circle, pressure-bearing cover plate, rubber hose, pressurization oil cylinder, steel strand wires set bolt, steel strand wires, described sample groove is fixedly connected on frame mid portion, described overflow groove is placed in sample groove bottom, described permeable stone is placed in sample groove top and the bottom respectively, the through sample trench bottom of described seepage flow spillway hole is also evenly arranged, described pressure-bearing cover plate is placed in permeable stone top, top and is connected with sample groove upper end by cover plate for sealing circle and its top is evenly arranged rubber hose and steel strand wires set bolt, described steel strand wires lower end is connected with steel strand wires set bolt, described pressurization cylinder upper end and framework are fixedly connected with lower end and align with described pressure-bearing cover plate,
Hydraulic servo, comprises hydraulic pump servo-control system, hydraulic pump, hydraulic tube, and described hydraulic pump servo-control system is connected with hydraulic pump, and described hydraulic pump is connected with pressurization oil cylinder by hydraulic tube;
Infiltration coefficient test mechanism, comprise supply tank, switch valve, flexible pipe, varying head piezometric tube, infiltration case, permeable stone, voltage stabilizing overflow groove, overflow groove, bearing, voltage stabilizing spout hole, pressure stabilizing tank double-edged fine-toothed comb, described supply tank is fixed on framework upper end side, described varying head piezometric tube upper end is connected with switch valve on supply tank by flexible pipe, lower end is connected with infiltration case upper end, described infiltration case to be fixed in the middle part of voltage stabilizing overflow groove by bearing and its underpart is from top to bottom equipped with permeable stone, pressure stabilizing tank double-edged fine-toothed comb, its top is from bottom to top equipped with permeable stone, voltage stabilizing spout hole, varying head piezometric tube, described overflow groove is connected with voltage stabilizing overflow groove by voltage stabilizing spout hole,
Sampling mechanism, comprise microcomputer, sampled receivers, data line, resistive flowmeter, displacement sampling thief, oil pressure is rested the head on, described displacement sampling thief upper end is fixed on described framework upper end both sides and its lower end is fixedly connected with steel strand wires, described resistive flowmeter is placed in varying head piezometric tube respectively and overflow groove is inner, described oil pressure pillow is placed in sample groove periphery of inner wall, described sampled receivers is rested the head on oil pressure respectively by data line, resistive flowmeter, microcomputer is connected, and be connected with displacement sampling thief by wireless, described microcomputer is connected with hydraulic pump servo-control system by data line.
Preferably, described oil pressure pillow is placed in around sample groove, and is connected with sampled receivers by data line.
Preferably, described displacement sampling thief upper end is fixed on described framework upper end both sides and its lower end is fixedly connected with steel strand wires, and it is connected with sampled receivers by wireless.
Preferably, described hydraulic pump servo-control system is controlled to carry out constant voltage multistage loadings by hydraulic cylinder to sample by microcomputer, and as sample deformation amount <0.01mm, press pump servo-control system automatically carries out next stage loading under microcomputer controls.
Preferably, described varying head piezometric tube upper end is connected with switch valve on supply tank by flexible pipe, and lower end is connected with infiltration case upper end, and its inside is equipped with electromagnetic flowmeter.
Preferably, described voltage stabilizing spout hole is placed in infiltration case upper end and voltage stabilizing overflow groove bottom respectively, wherein permeates outside case upper end spout hole and extends voltage stabilizing overflow groove outside and built-in respective switch.
The invention allows for a kind of crude tailings gelling aggregate seepage flow with consolidation combined test device method of operating, application said apparatus, it comprises following job step:
Prepared by a, sample: according to proportioning and the concentration of gelling aggregate, by a certain amount of crude tailings, Binder Materials, puts into sample groove and infiltration case after water and other adjuvants stir;
B, compression concretion are tested: after being connected with cover plate set bolt by displacement sampling thief, and zero is removed in the disturbance displacement of displacement sampling thief; Sampled receivers and oil pressure are rested the head on, and microcomputer is connected.By hydraulic pump servo-control system, hydraulic jack is made to be in pressure constant state, when under certain loads, hour accumulative deflection that displacement sampling thief spreads out of is less than 0.01mm, and the automatic loading of microcomputer hydraulic pump servo-control system is to next stage, and loading rank is 50kPa, 100kPa, 200kPa, 300kPa, 400kPa;
C, permeability test: by tank switch valve, voltage stabilizing spout hole and sampled receivers, realize the conversion between constant head or varying head mensuration.When carrying out constant head measurement infiltration coefficient, utilize sampled receivers to gather the inner electromagnetic flowmeter signal of overflow groove, measure seepage flow; Now, open water tank switch valve, supply water to seepage flow case, open seepage flow upper box part voltage stabilizing spout hole simultaneously and carry out overflow voltage stabilizing; When carrying out varying head measurement, close seepage flow upper box part voltage stabilizing spout hole, sampled receivers is utilized to gather the inner electromagnetic flowmeter signal of varying head piezometric tube, after seepage stability, namely, after pressure stabilizing tank starts overflow, close tank switch valve and make it communicate with air, starting to measure piezometric head and change in time, record sampled result, and return microcomputer;
D, microcomputer, after the change in displacement obtaining sampled receivers transmission, draw the curve map of displacement and loading times s-t; S can be converted into the changing value of void ratio e, thus draw e-p curve, or e-lgp curve, obtain a series of compressible index;
E, test complete, cleaning arrange and preserve experimental provision.
Compared with existing parameter measuring apparatus, tool of the present invention has the following advantages:
The crude tailings gelling aggregate seepage flow with consolidation combined test device that the present invention addresses, is applicable to the compressible index measuring crude tailings Binder Materials or the general soil body, comprises and draw e-p curve, obtain compressibility coefficient a, compression index C
c, oedometric modulus etc.According to oil pressure pillow sampled data, pore water pressure dissipation curve can be drawn out.For the mensuration of permeability coefficient, based on hydrostatic head method:
and variable water level method
measure.This beneficial effect of the invention is that lengthy procedure compression concretion can tested is unmanned, is sampled, obtain accumulation displacement by sampling thief real time record, thus can not obliterated data, and it is defeated to carry out wireless optical propagated sensation between sampling thief, simplifies receiving trap; Loading process realizes robotization, when the shift value of microcomputer meets the condition becoming line stabilization, namely automatically loads; Achieve the Real-Time Monitoring of consolidation process Pore Pressure.By sampled receivers, consolidation is combined with permeability apparatus, variable water level method is combined with constant head mensuration, realizes a tractor serves several purposes.There is good application prospect for crude tailings Binder Materials and general soil test parameter measurement, and measure accurately, the accurate foundation can evaluated as engineering stability.
Accompanying drawing explanation
Fig. 1 is the compression concretion experimental machine composition of the embodiment of the present invention;
Fig. 2 is the hydraulic servo-machine composition of the embodiment of the present invention;
Fig. 3 is the infiltration coefficient testing machine composition of the embodiment of the present invention;
Fig. 4 is the Sampling Machine composition of the embodiment of the present invention;
Fig. 5 is the crude tailings gelling aggregate seepage flow with consolidation combined test device figure of the embodiment of the present invention.
In figure: 1-framework; 2-sample groove; 3-overflow groove; 4-oil pressure is rested the head on; 5-permeable stone; 6-seepage flow spillway hole; 7-cover plate for sealing circle; 8-pressure-bearing cover plate; 9-rubber hose; 10-displacement sampling thief; 11-sampled receivers; 12-pressurization oil cylinder; 13-steel strand wires set bolt; 14-steel strand wires; 15-supply tank; 16-switch valve; 17-flexible pipe; 18-varying head piezometric tube; 19-electromagnetic flowmeter; 20-infiltration case; 21-voltage stabilizing overflow groove; 22-overflow groove; 23-bearing; 24-voltage stabilizing spout hole; 25-pressure stabilizing tank double-edged fine-toothed comb; 26-microcomputer; 27-hydraulic pump servo-control system; 28-hydraulic pump; 29-hydraulic tube; 30-data line.
Embodiment
Below the present invention is described further, but protection scope of the present invention is not limited to the scope of following described embodiment.
Composition graphs 1, Fig. 2, Fig. 3, shown in Fig. 4, a kind of crude tailings gelling aggregate seepage flow with consolidation combined test device, in compression concretion experiment mechanism, described sample groove 2 is fixedly connected in the middle part of framework 1, described overflow groove 3 is placed in sample groove 2 bottom, described permeable stone 5 is placed in sample groove 2 top and the bottom respectively, be evenly arranged bottom the through sample groove 2 of described seepage flow spillway hole 6, described pressure-bearing cover plate 8 is placed in top permeable stone 5 top and is connected with sample groove 2 upper end by cover plate for sealing circle 7 and its top is evenly arranged rubber hose 9 and steel strand wires 14 set bolt 13, described steel strand wires 14 lower end is connected with steel strand wires 14 set bolt 13, described pressurization oil cylinder 12 upper end and framework 1 are fixedly connected with lower end and align with described pressure-bearing cover plate 8,
In hydraulic servo, described hydraulic pump servo-control system 27 is connected with hydraulic pump 28, and described hydraulic pump 28 is connected with pressurization oil cylinder 12 by hydraulic tube 29;
In infiltration coefficient test mechanism, described supply tank 15 is fixed on framework 1 upper end side, described varying head piezometric tube 18 upper end is connected with switch valve 16 on supply tank 15 by flexible pipe 17, lower end is connected with infiltration case 20 upper end, described infiltration case 20 is fixed in the middle part of voltage stabilizing overflow groove 21 and its underpart by bearing 23 and is from top to bottom equipped with permeable stone 5, pressure stabilizing tank double-edged fine-toothed comb 25, its top is from bottom to top equipped with permeable stone 5, voltage stabilizing spout hole 24, varying head piezometric tube 18, and described overflow groove 22 is connected with voltage stabilizing overflow groove 21 by voltage stabilizing spout hole 24;
In sampling mechanism, described displacement sampling thief 10 upper end is fixed on described framework 1 upper end both sides and its lower end is fixedly connected with steel strand wires 14, it is inner with overflow groove 22 that described resistive flowmeter is placed in varying head piezometric tube 18 respectively, described oil pressure pillow 4 is placed in sample groove 2 periphery of inner wall, described sampled receivers 11 rests the head on 4 respectively by data line 30 with oil pressure, resistive flowmeter, microcomputer 26 are connected, and be connected with displacement sampling thief 10 by wireless, described microcomputer 26 is connected with hydraulic pump servo-control system 27 by data line 30.
Shown in composition graphs 5, the method for operating of above-mentioned crude tailings gelling aggregate seepage flow with consolidation combined test device is:
Prepared by a, sample: according to proportioning and the concentration of gelling aggregate, by a certain amount of crude tailings, Binder Materials, puts into sample groove 2 and infiltration case 20 after water and other adjuvants stir;
B, compression concretion are tested: after being connected with cover plate set bolt by displacement sampling thief 10, and zero is removed in the disturbance displacement of displacement sampling thief 10; Sampled receivers 11 and oil pressure rest the head on 4, and microcomputer 26 is connected.By hydraulic pump servo-control system 27, hydraulic jack is made to be in pressure constant state, when under certain loads, hour accumulative deflection that displacement sampling thief 10 spreads out of is less than 0.01mm, and the automatic loading of microcomputer 26 hydraulic pump servo-control system 27 is to next stage, and loading rank is 50kPa, 100kPa, 200kPa, 300kPa, 400kPa;
C, permeability test: by tank switch valve 16, voltage stabilizing spout hole 24 and sampled receivers 11, realize the conversion between constant head or varying head mensuration.When carrying out constant head measurement infiltration coefficient, utilize sampled receivers 11 to gather overflow groove 22 internal electrical magnetic flowmeter 19 signal, measure seepage flow; Now, open water tank switch valve 16, supply water to seepage flow case, open seepage flow upper box part voltage stabilizing spout hole 24 simultaneously and carry out overflow voltage stabilizing; When carrying out varying head measurement, close seepage flow upper box part voltage stabilizing spout hole 24, sampled receivers 11 is utilized to gather varying head piezometric tube 18 internal electrical magnetic flowmeter 19 signal, after seepage stability, namely, after pressure stabilizing tank starts overflow, close tank switch valve 16 and make it communicate with air, starting to measure piezometric head and change in time, record sampled result, and return microcomputer 26;
D, microcomputer 26, after the change in displacement obtaining sampled receivers 11 transmission, draw the curve map of displacement and loading times s-t; S can be converted into the changing value of void ratio e, thus draw e-p curve, or e-lgp curve, obtain a series of compressible index;
E, test complete, cleaning arrange and preserve experimental provision.
Claims (7)
1. a crude tailings gelling aggregate seepage flow with consolidation combined test device, is characterized in that: described crude tailings gelling aggregate seepage flow with consolidation combined test device comprises:
Compression concretion experiment mechanism, comprise framework, sample groove, overflow groove, permeable stone, seepage flow spillway hole, cover plate for sealing circle, pressure-bearing cover plate, rubber hose, pressurization oil cylinder, steel strand wires set bolt, steel strand wires, described sample groove is fixedly connected on frame mid portion, described overflow groove is placed in sample groove bottom, described permeable stone is placed in sample groove top and the bottom respectively, the through sample trench bottom of described seepage flow spillway hole is also evenly arranged, described pressure-bearing cover plate is placed in permeable stone top, top and is connected with sample groove upper end by cover plate for sealing circle and its top is evenly arranged rubber hose and steel strand wires set bolt, described steel strand wires lower end is connected with steel strand wires set bolt, described pressurization cylinder upper end and framework are fixedly connected with lower end and align with described pressure-bearing cover plate,
Hydraulic servo, comprises hydraulic pump servo-control system, hydraulic pump, hydraulic tube, and described hydraulic pump servo-control system is connected with hydraulic pump, and described hydraulic pump is connected with pressurization oil cylinder by hydraulic tube;
Infiltration coefficient test mechanism, comprise supply tank, switch valve, flexible pipe, varying head piezometric tube, infiltration case, permeable stone, voltage stabilizing overflow groove, overflow groove, bearing, voltage stabilizing spout hole, pressure stabilizing tank double-edged fine-toothed comb, described supply tank is fixed on framework upper end side, described varying head piezometric tube upper end is connected with switch valve on supply tank by flexible pipe, lower end is connected with infiltration case upper end, described infiltration case to be fixed in the middle part of voltage stabilizing overflow groove by bearing and its underpart is from top to bottom equipped with permeable stone, pressure stabilizing tank double-edged fine-toothed comb, its top is from bottom to top equipped with permeable stone, voltage stabilizing spout hole, varying head piezometric tube, described overflow groove is connected with voltage stabilizing overflow groove by voltage stabilizing spout hole,
Sampling mechanism, comprise microcomputer, sampled receivers, data line, resistive flowmeter, displacement sampling thief, oil pressure is rested the head on, described displacement sampling thief upper end is fixed on described framework upper end both sides and its lower end is fixedly connected with steel strand wires, described resistive flowmeter is placed in varying head piezometric tube respectively and overflow groove is inner, described oil pressure pillow is placed in sample groove periphery of inner wall, described sampled receivers is rested the head on oil pressure respectively by data line, resistive flowmeter, microcomputer is connected, and be connected with displacement sampling thief by wireless, described microcomputer is connected with hydraulic pump servo-control system by data line.
2. crude tailings gelling aggregate seepage flow with consolidation combined test device according to claim 1, is characterized in that: described oil pressure pillow is placed in around sample groove, and is connected with sampled receivers by data line.
3. crude tailings gelling aggregate seepage flow with consolidation combined test device according to claim 1, it is characterized in that: described displacement sampling thief upper end is fixed on described framework upper end both sides and its lower end is fixedly connected with steel strand wires, and it is connected with sampled receivers by wireless.
4. crude tailings gelling aggregate seepage flow with consolidation combined test device according to claim 1, it is characterized in that: described hydraulic pump servo-control system is controlled to carry out constant voltage multistage loadings by hydraulic cylinder to sample by microcomputer, as sample deformation amount <0.01mm, press pump servo-control system automatically carries out next stage loading under microcomputer controls.
5. crude tailings gelling aggregate seepage flow with consolidation combined test device according to claim 1, it is characterized in that: described varying head piezometric tube upper end is connected with switch valve on supply tank by flexible pipe, lower end is connected with infiltration case upper end, and its inside is equipped with electromagnetic flowmeter.
6. crude tailings gelling aggregate seepage flow with consolidation combined test device according to claim 1, it is characterized in that: described voltage stabilizing spout hole is placed in infiltration case upper end and voltage stabilizing overflow groove bottom respectively, wherein permeate outside case upper end spout hole and extend voltage stabilizing overflow groove outside and built-in respective switch.
7. a crude tailings gelling aggregate seepage flow with consolidation combined test device method of operating, is characterized in that, adopts the crude tailings gelling aggregate seepage flow with consolidation combined test device as described in any one of claim 1 to 6, comprises the steps:
Prepared by a, sample: according to proportioning and the concentration of gelling aggregate, by a certain amount of crude tailings, Binder Materials, puts into sample groove and infiltration case after water and other adjuvants stir;
B, compression concretion are tested: after being connected with cover plate set bolt by displacement sampling thief, and zero is removed in the disturbance displacement of displacement sampling thief; Sampled receivers and oil pressure are rested the head on, and microcomputer is connected.By hydraulic pump servo-control system, hydraulic jack is made to be in pressure constant state, when under certain loads, hour accumulative deflection that displacement sampling thief spreads out of is less than 0.01mm, and the automatic loading of microcomputer hydraulic pump servo-control system is to next stage, and loading rank is 50kPa, 100kPa, 200kPa, 300kPa, 400kPa;
C, permeability test: by tank switch valve, voltage stabilizing spout hole and sampled receivers, realize the conversion between constant head or varying head mensuration.When carrying out constant head measurement infiltration coefficient, utilize sampled receivers to gather the inner electromagnetic flowmeter signal of overflow groove, measure seepage flow; Now, open water tank switch valve, supply water to seepage flow case, open seepage flow upper box part voltage stabilizing spout hole simultaneously and carry out overflow voltage stabilizing; When carrying out varying head measurement, close seepage flow upper box part voltage stabilizing spout hole, sampled receivers is utilized to gather the inner electromagnetic flowmeter signal of varying head piezometric tube, after seepage stability, namely, after pressure stabilizing tank starts overflow, close tank switch valve and make it communicate with air, starting to measure piezometric head and change in time, record sampled result, and return microcomputer;
D, microcomputer, after the change in displacement obtaining sampled receivers transmission, draw the curve map of displacement and loading times s-t; S can be converted into the changing value of void ratio e, thus draw e-p curve, or e-lgp curve, obtain a series of compressible index;
E, test complete, cleaning arrange and preserve experimental provision.
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| CN106092853A (en) * | 2016-06-07 | 2016-11-09 | 长安大学 | A kind of soil mass water air humidity falls into consolidation infiltration simultaneous determination instrument |
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| CN106092853A (en) * | 2016-06-07 | 2016-11-09 | 长安大学 | A kind of soil mass water air humidity falls into consolidation infiltration simultaneous determination instrument |
| CN106092853B (en) * | 2016-06-07 | 2018-07-20 | 长安大学 | A kind of sunken consolidation infiltration simultaneous determination instrument of soil mass water-air humidity |
| CN106706447A (en) * | 2017-01-23 | 2017-05-24 | 重庆科技学院 | Rheological direct-shear test device based on electromagnetic force |
| CN107228794A (en) * | 2017-06-14 | 2017-10-03 | 哈尔滨工业大学深圳研究生院 | Drying and watering cycle unsaturated soil triaxial apparatus based on temperature control |
| CN108240940A (en) * | 2018-01-31 | 2018-07-03 | 西安科技大学 | A kind of cemented fill mechanical response characteristic tests system and method |
| CN108287254A (en) * | 2018-01-31 | 2018-07-17 | 西安科技大学 | A kind of cemented fill micro-parameter Sensitivity Analysis based on image procossing |
| CN108680430A (en) * | 2018-03-15 | 2018-10-19 | 水利部交通运输部国家能源局南京水利科学研究院 | A kind of tail residues centrifugal model seepage flow with consolidation control system and test method |
| CN108680430B (en) * | 2018-03-15 | 2020-11-24 | 水利部交通运输部国家能源局南京水利科学研究院 | Tailing centrifugal model consolidation seepage control system and testing method |
| CN110361258A (en) * | 2018-04-10 | 2019-10-22 | 中国矿业大学(北京) | A kind of saturable sliding high-pressure consolidation apparatus device |
| CN108279199A (en) * | 2018-04-18 | 2018-07-13 | 中国科学院武汉岩土力学研究所 | A kind of high stress consolidation apparatus device |
| CN108279199B (en) * | 2018-04-18 | 2024-02-27 | 中国科学院武汉岩土力学研究所 | High-stress osmometer device |
| CN110736692A (en) * | 2019-11-04 | 2020-01-31 | 三峡大学 | automatic device and method for measuring permeability coefficient of soil body |
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Application publication date: 20150624 |