CN104977149B - The husky transported simulation test unit of a kind of water and method - Google Patents
The husky transported simulation test unit of a kind of water and method Download PDFInfo
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- CN104977149B CN104977149B CN201510389889.1A CN201510389889A CN104977149B CN 104977149 B CN104977149 B CN 104977149B CN 201510389889 A CN201510389889 A CN 201510389889A CN 104977149 B CN104977149 B CN 104977149B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 192
- 238000012360 testing method Methods 0.000 title claims abstract description 31
- 238000004088 simulation Methods 0.000 title claims abstract description 19
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000004576 sand Substances 0.000 claims abstract description 54
- 238000013508 migration Methods 0.000 claims abstract description 10
- 230000005012 migration Effects 0.000 claims abstract description 10
- 238000012216 screening Methods 0.000 claims abstract description 7
- 239000011521 glass Substances 0.000 claims description 15
- 239000002245 particle Substances 0.000 claims description 12
- 238000012806 monitoring device Methods 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 7
- 239000004927 clay Substances 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 239000004744 fabric Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000004033 plastic Substances 0.000 claims description 2
- 229920003023 plastic Polymers 0.000 claims description 2
- 239000005341 toughened glass Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims 1
- 238000011160 research Methods 0.000 abstract description 5
- 230000009172 bursting Effects 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract 1
- -1 screening Substances 0.000 abstract 1
- 238000010998 test method Methods 0.000 abstract 1
- 239000000523 sample Substances 0.000 description 41
- 230000033001 locomotion Effects 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000005514 two-phase flow Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
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- 238000002360 preparation method Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
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Abstract
The husky transported simulation test unit of a kind of water and method, test unit comprises water flow control system, water husky collection system, model casing and parameter acquisition system, can under lab Simulated Water sand migration environmental baseline, obtain correlation parameter, be applied in actual control, test method mainly comprises washes the step such as sand, screening, sample, husky, the full water of paving, water husky migration, section survey, collection picture.The present invention under lab can simulate gushing water and to burst husky process, and obtain the parameter such as water velocity, hydraulic pressure by parameter acquisition devices, for carrying out research provide scientific basis to burst husky hydrodynamic condition and the gushing water morphology evolution rule of bursting in husky process of gushing water further.
Description
Technical field
The present invention relates to the husky parameter of migration collection of water, monitoring technical field, specifically the husky transported simulation test unit of a kind of water.
Background technology
There is abundant underground mineral resources in China western part, and coal prospective reserves 85% is in western part.In development of the West Regions, as mineral resources recipient place, exploitation of mineral resources center moves westwards.A lot of mining area is located in desert area, and physical geography condition is poor, and vegetation is rare, and geologic media is fragile, and earth's surface blazons dune sand beam, gushing water occurs and bursts husky possibility very greatly, therefore before exploitation, must carry out effectively preventing to mine sand inrush disaster.
When there is gushing water sand inrush disaster, be due to not deep enough to mechanism of water inrush research in a lot of situation, because colliery area is comparatively large, want to obtain correlation parameter performance difficulty, the test period is long and data that are that measure have limitation.These parameters are easy to measure in laboratory conditions, and also can realize measuring at gushing water this tittle of husky region of bursting, therefore the indoor parameter chosen has feasibility.Can be applicable to mine water inrush to the achievement in research of these parameter regularity burst in the engineering practice of husky control.
Summary of the invention
In order to better study the migration rule of the husky Two-phase mixture fluids of water in pore media, the invention provides the husky transported simulation test unit of a kind of water, under lab can simulate gushing water and to burst husky process, obtaining relevant parameters.
The technical solution used in the present invention: the husky transported simulation test unit of a kind of water, comprises water flow control system, model casing, the husky collection system of water and parameter acquisition system; Described water flow control system comprises pressurization water feed apparatus, is arranged on the tensimeter on pressurization water feed apparatus water pipe and flowmeter; The sidewall of described model casing side is provided with water inlet, the sidewall of model casing opposite side is provided with the outlet of water sand, and water sand outlet top is provided with water delivering orifice; The water inlet of the water pipe connection mode molding box of described pressurization water feed apparatus; The bottom of described model casing is provided with water pressure monitoring device; The husky collection system of described water comprises the husky gathering-device of water; The signal picker that described parameter acquisition system comprises computing machine and is attached thereto, described signal picker is connected with water pressure monitoring device.
Utilize the husky transported simulation test unit of above-mentioned water to carry out the method tested, comprise the following steps:
S1: wash sand, washes husky sample, removes the clay in husky sample or clay composition, the husky sample after washing is put into drying baker and dries 5 hours;
S2: screening, chooses 10,18,35,60,200 object screen clothes, carries out the screening of different-grain diameter to the husky sample after drying, obtain rough sand that particle diameter is 2 ~ 0.5mm, middle sand that particle diameter is 0.5 ~ 0.25mm and particle diameter be 0.25 ~ 0.075 fine sand three kinds of husky samples;
The three kinds of husky samples screened are required to carry out proportioning according to different gradation, and measure the density of sample, total porosity, grain composition by S3: sample;
S4: paving is husky, model casing is divided into three regions, separates between adjacent area with baffle plate; Be located at bottom model casing by the husky sample prepared according to mode subregion uniform spreading from left to right, fill the coloured silk sand identical with grating with the husky sample particle diameter of test between the husky sample of two adjacent areas, it is 2 ~ 3cm that color sand lays width, and height is consistent with husky sample;
S5: full water, opens model casing water inlet and water delivering orifice, closes the outlet of water sand; Open pressurization water feed apparatus, control valve controls current and enters model casing with less flow, infiltrates husky sample gradually, until water overflows from water delivering orifice, ensures that husky sample does not overflow with current in this process; Close water inlet and water delivering orifice, model casing is left standstill 30 minutes;
S6: the husky transported simulation of water, sand of fetching boiling water exports, pressurize water feed apparatus and signal picker, regulating water inlet valve door, makes its ascending water inlet of increase step by step flow velocity, observed the migration rule of husky sample and coloured silk sand by clear glass, collect the water sand of the husky outlet outflow of water and use manual time-keeping;
S7: section survey, lifts on the glass plate at model casing top is vertical and removes, the fracture morphology formed after measuring the migration of water sand with rule, then takes husky sample track picture with camera;
S8: evenly removed by the sand bed of the superiors 0.5cm in model casing with the tagger with model casing commensurateiy wide, with husky sample track picture in camera shooting model casing;
S9: repeat step S8, successively move sand downwards until husky sample track picture all gathers complete.
Beneficial effect of the present invention: the present invention under lab can simulate gushing water and to burst husky process, and obtain the parameter such as water velocity, hydraulic pressure by parameter acquisition devices, for carrying out research provide scientific basis to burst husky hydrodynamic condition and the gushing water morphology evolution rule of bursting in husky process of gushing water further.
Accompanying drawing explanation
Fig. 1 is test unit one-piece construction schematic diagram of the present invention;
Fig. 2 is test unit mold box configuration schematic diagram of the present invention;
In figure, 1, water inlet, 2, water flow buffer device, 3, micropore, 4, scale, 5, water delivering orifice, 6, the outlet of water sand.
Embodiment
In order to state details and the beneficial effect thereof of technical solution of the present invention better, be now described further by reference to the accompanying drawings.
As shown in Figure 1, the husky transported simulation test unit of a kind of water, comprises water flow control system, model casing, the husky collection system of water and parameter acquisition system; Described water flow control system comprises pressurization water feed apparatus, is arranged on the tensimeter on pressurization water feed apparatus water pipe and flowmeter; The sidewall of described model casing side is provided with water inlet 1, the sidewall of model casing opposite side is provided with water sand outlet 6, is provided with water delivering orifice 5 above water sand outlet 6; The water inlet 1 of the water pipe connection mode molding box of described pressurization water feed apparatus; The bottom of described model casing is provided with water pressure monitoring device; The husky collection system of described water comprises the husky gathering-device of water; The signal picker that described parameter acquisition system comprises computing machine and is attached thereto, described signal picker is connected with water pressure monitoring device.
In the present embodiment, described model casing is inner, is provided with a water flow buffer device 2 apart from water inlet 1 place, and other region in model casing except current snubber assembly 2 is for filling husky region.Described water flow buffer device 2 comprises the fixed dam that a piece has even hole pattern, described fixed dam is apart from water inlet 150mm, surrounding and the model casing of fixed dam are tightly connected, be provided with sponge between the sidewall at described fixed dam and water inlet 1 place, guarantee that testing current is the planar stream evenly going out stream.Described fixed dam is covered with one deck 100 object screen cloth away from the side of water inlet 1, prevents sandy soil to be mixed into.
The length, width and height of described model casing inside are respectively 600mm, 100mm, 100mm, and the diameter of water inlet 1, water delivering orifice 5 and water sand outlet 6 is 20mm, and casing material adopts thickness to be the transparent toughened glass of 20mm.Bottom model casing, be respectively equipped with apart from water flow buffer device 2100mm, 250mm and 400mm place the micropore 3 that three specifications are M10*1.5, for burying pore pressure gauge probe underground, pore pressure gauge connects terminal by data acquisition unit.Model casing is inner, is respectively equipped with the thick draw-in groove of 3 3mm apart from water flow buffer device 2150mm, 300mm and 450mm place, is used for placing baffle plate, territory, husky sample uniform segmentation is laid.
Described water pressure monitoring device adopts 3 HSLY-H type pore water pressure sensors, the diameter 10mm of sensor, length 130mm, and range is 0 ~ 100kPa respectively, 2; 0 ~ 300kPa, 1, preparation adapts to the actual demand of different hydraulic pressure, accuracy class 0.25%, output voltage 0 ~ 5V, and described pressure transducer connects one for correcting the piezometric tube of result.Signal picker adopts DATATAKER515 data acquisition unit, and frequency acquisition is not less than 1 time/S.
Described model casing top is one can the closed glass plate of folding, the thick plastics soft board of one deck 3mm is provided with between four sides that glass plate contacts with model casing, increase the water isolating of model casing, the surrounding of glass plate is provided with multiple screw for fixing glass Board position.
Described pressurization water feed apparatus adopts high-pressure hydraulic pump, the water pipe of described pressurization water feed apparatus is provided with from valve with a scale, can control flow of inlet water by quantitative fine adjustment, meet the uninterrupted required for test and degree of regulation.Pressurization water feed apparatus reaches flow velocity needed for test by regulating water pump to control water velocity.
The scale 4 that precision is 1mm is all carved with at the side of described model casing and top thereof, is used for marking husky sample and color husky position, directly can observe and measure the motion process of two-phase flow.What described flowmeter adopted is vortex shedding flow meter, and range can regulate on demand voluntarily, can meet testing requirements, precision ± 1%, and the main display of instrument display panel can record flow cumulative amount, instantaneous delivery, flow signal frequency values and output current value automatically.Volumetric flow rate or mass rate can carry out self-defined adjustment, and reading can retain 2 significant digits.
This test unit water source is provided by special water tank, is extracted in model casing by water by high-pressure hydraulic pump from water tank.Be provided with operation control system in control box, major function is Control experiment installation's power source, opens, switches off the pump.Tensimeter mainly shows water inlet 1 place force value, by signal feedback to control box, and can set threshold value, and when hydraulic pressure reaches setting threshold value, control box disconnects pump power automatically, ensures that model casing is not by high hydraulic pressure pressure break.
Utilize the husky transported simulation test unit of above-mentioned water to carry out the method tested, comprise the following steps:
S1: wash sand, washes husky sample, removes the clay in husky sample or clay composition, the husky sample after washing is put into drying baker and dries 5 hours;
S2: screening, chooses 10,18,35,60,200 object screen clothes, carries out the screening of different-grain diameter to the husky sample after drying, obtain rough sand that particle diameter is 2 ~ 0.5mm, middle sand that particle diameter is 0.5 ~ 0.25mm and particle diameter be 0.25 ~ 0.075 fine sand three kinds of husky samples;
The three kinds of husky samples screened are required to carry out proportioning according to different gradation, and measure the density of sample, total porosity, grain composition by S3: sample;
S4: paving is husky, model casing is divided into three regions, lays the identical husky sample of proportioning in three regions.Separate with the baffle plate being highly 100mm between adjacent area; Be located at bottom model casing by the husky sample prepared according to mode subregion uniform spreading from left to right, laying is highly 100mm, often lays 2cm, uses packer to beat 3 times with identical dynamics, thus in process of deployment, ensures that husky sample has identical packing.Use the same method between the husky sample of two adjacent areas and fill the coloured silk sand (black) identical with grating with the husky sample particle diameter of test, color husky laying width is 2 ~ 3cm, and height is consistent with husky sample; The color husky supplementary observation acting as the husky two-phase flow top layer of water and internal motion rule.After whole laying, by model casing upper cover closing seam;
S5: full water, opens model casing water inlet 1 and water delivering orifice 5, closes water sand outlet 6; Open pressurization water feed apparatus, control valve controls current and enters model casing with less flow, infiltrates husky sample gradually, until water overflows from water delivering orifice 5, ensures that husky sample does not overflow with current in this process; Close water inlet 1 and water delivering orifice 5, model casing is left standstill 30 minutes; During concrete enforcement, select waterflood injection rate according to the husky sample of minimum grain size in husky sample, the waterflood injection rate that rough sand is corresponding is 10ml/s, and middle sand is 5ml/s, and fine sand is 3ml/s;
S6: the husky transported simulation of water, fetch boiling water husky outlet 6, pressurization water feed apparatus and signal picker, regulating water inlet valve door, makes its ascending water inlet of increase step by step flow velocity, by water pressure monitoring device monitoring hydraulic pressure, prevents because of the excessive fracturing model case of hydraulic pressure.Observed the migration rule of husky sample and coloured silk sand by clear glass, the water sand collecting water sand outlet 6 outflow counts husky amount m, and with manual time-keeping, measures its steady state time t;
S7: section survey, lifts on the glass plate at model casing top is vertical and removes, and prevents the movement because of glass plate from having an impact to color husky movement locus.Measure the fracture morphology of the rear formation of water sand migration with rule, measure expansion radius R, in order to draw the spatial of husky sample, then with camera color sand for shooting as the husky sample track picture marked;
S8: evenly removed by the sand bed of the superiors 0.5cm in model casing with the tagger with model casing commensurateiy wide, with husky sample track picture in camera shooting model casing;
S9: repeat step S8, successively move sand downwards until husky sample track picture all gathers complete.
Adopt the husky sample of 12 kinds of different ratio to test in the present embodiment altogether, its proportioning sees the following form:
In experimentation, in step S6, water flow velocity is divided into 5 grades, discharge Q, steady state time t that 12 kinds of samples collect respectively under each grade of water speed, expansion radius R and to go out husky amount m information as shown in the table:
Test proves, the present invention under lab can simulate gushing water and to burst husky process, obtains relevant parameters, can be applicable to mine water inrush burst in the engineering practice of husky control to the achievement in research of these parameter regularity.
Claims (7)
1. the husky transported simulation test unit of water, is characterized in that: comprise water flow control system, model casing, the husky collection system of water and parameter acquisition system; Described water flow control system comprises pressurization water feed apparatus and the tensimeter be arranged on pressurization water feed apparatus water pipe and flowmeter; The sidewall of described model casing side is provided with water inlet, the sidewall of model casing opposite side is provided with the outlet of water sand, and water sand outlet top is provided with water delivering orifice; The water inlet of the water pipe connection mode molding box of described pressurization water feed apparatus; The bottom of described model casing is provided with water pressure monitoring device; The husky collection system of described water comprises the husky gathering-device of water; The signal picker that described parameter acquisition system comprises computing machine and is attached thereto, described signal picker is connected with water pressure monitoring device; Described test unit is also provided with the control box for opertaing device power supply.
2. the husky transported simulation test unit of a kind of water according to claim 1, it is characterized in that: described model casing is inner, water inlet is provided with a water flow buffer device, described water flow buffer device comprises the fixed dam that a piece has even hole pattern, described fixed dam is apart from water inlet 50mm, the surrounding of fixed dam is connected with model casing inner wall sealing, be provided with sponge between the sidewall at described fixed dam and water inlet place, described fixed dam is covered with one deck 100 object screen cloth away from the side of water inlet.
3. the husky transported simulation test unit of a kind of water according to claim 2, it is characterized in that: the length, width and height of described model casing inside are respectively 600mm, 100mm, 100mm, the diameter of water inlet, water delivering orifice and water sand outlet is 20mm, and casing material adopts thickness to be the transparent toughened glass of 20mm; Bottom described model casing, being respectively equipped with three specifications apart from water flow buffer device 100mm, 250mm and 400mm place is the micropore of M10*1.5; The wide draw-in groove of 3 3mm is respectively equipped with apart from water flow buffer device 150mm, 300mm and 450mm place.
4. the husky transported simulation test unit of a kind of water according to claim 1, it is characterized in that: described model casing top is one can the closed glass plate of folding, be provided with one deck between four sides that glass plate contacts with model casing for the thick plastics soft board of the 3mm of water proof, the surrounding of glass plate is provided with multiple screw for fixing glass Board position.
5. the husky transported simulation test unit of a kind of water according to claim 1, is characterized in that: the scale that precision is 1mm is all carved with at the side of described model casing and top thereof; Described pressurization water feed apparatus adopts high-pressure hydraulic pump, and the water pipe of described pressurization water feed apparatus is provided with from valve with a scale.
6. the husky transported simulation test unit of a kind of water according to claim 1, it is characterized in that: described water pressure monitoring device adopts HSLY-H type pore water pressure sensor, described pressure transducer connects one for correcting the piezometric tube of result; Described signal picker adopts DATATAKER515 data acquisition unit; What described flowmeter adopted is vortex shedding flow meter.
7. utilize the husky transported simulation test unit of the water described in claim 1 ~ 6 to carry out the method tested, it is characterized in that, comprise the following steps:
S1: wash sand, washes husky sample, removes the clay in husky sample or clay composition, the husky sample after washing is put into drying baker and dries 5 hours;
S2: screening, chooses 10,18,35,60,200 object screen clothes, carries out the screening of different-grain diameter to the husky sample after drying, obtain rough sand that particle diameter is 2 ~ 0.5mm, middle sand that particle diameter is 0.5 ~ 0.25mm and particle diameter be 0.25 ~ 0.075 fine sand three kinds of husky samples;
The three kinds of husky samples screened are required to carry out proportioning according to different gradation, and measure the density of sample, total porosity, grain composition by S3: sample;
S4: paving is husky, model casing is divided into three regions, separate with baffle plate between adjacent area, the husky sample prepared is located at bottom model casing according to mode subregion uniform spreading from left to right, the coloured silk identical with grating with the husky sample particle diameter of test is filled husky between the husky sample of two adjacent areas, color husky laying width is 2 ~ 3cm, and height is consistent with husky sample;
S5: full water, opens model casing water inlet and water delivering orifice, closes the outlet of water sand; Open pressurization water feed apparatus, control valve controls current and enters model casing with less flow, infiltrates husky sample gradually, until water overflows from water delivering orifice, ensures that husky sample does not overflow with current in this process; Close water inlet and water delivering orifice, model casing is left standstill 30 minutes;
S6: the husky transported simulation of water, sand of fetching boiling water exports, pressurize water feed apparatus and signal picker, regulating water inlet valve door, makes its ascending water inlet of increase step by step flow velocity, observed the migration rule of husky sample and coloured silk sand by clear glass, collect the water sand of the husky outlet outflow of water and use manual time-keeping;
S7: section survey, lifts on the glass plate at model casing top is vertical and removes, the fracture morphology formed after measuring the migration of water sand with rule, then takes husky sample track picture with camera;
S8: evenly removed by the sand bed of the superiors 0.5cm in model casing with the tagger with model casing commensurateiy wide, with husky sample track picture in camera shooting model casing;
S9: repeat step S8, successively move sand downwards until husky sample track picture all gathers complete.
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| CN111270645B (en) * | 2020-01-21 | 2021-06-22 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Particulate matrix river circulating water test device |
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