CN106769787A - A kind of multimedium infiltration experiment device and its method of testing - Google Patents
A kind of multimedium infiltration experiment device and its method of testing Download PDFInfo
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- CN106769787A CN106769787A CN201710085245.2A CN201710085245A CN106769787A CN 106769787 A CN106769787 A CN 106769787A CN 201710085245 A CN201710085245 A CN 201710085245A CN 106769787 A CN106769787 A CN 106769787A
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- 238000002474 experimental method Methods 0.000 title claims abstract description 23
- 230000008595 infiltration Effects 0.000 title claims abstract description 22
- 238000001764 infiltration Methods 0.000 title claims abstract description 22
- 238000010998 test method Methods 0.000 title claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 74
- 239000004576 sand Substances 0.000 claims abstract description 48
- 238000012360 testing method Methods 0.000 claims abstract description 47
- 239000004033 plastic Substances 0.000 claims abstract description 40
- 229920003023 plastic Polymers 0.000 claims abstract description 40
- 239000002689 soil Substances 0.000 claims abstract description 20
- 230000015271 coagulation Effects 0.000 claims abstract description 18
- 238000005345 coagulation Methods 0.000 claims abstract description 18
- PMVSDNDAUGGCCE-TYYBGVCCSA-L Ferrous fumarate Chemical compound [Fe+2].[O-]C(=O)\C=C\C([O-])=O PMVSDNDAUGGCCE-TYYBGVCCSA-L 0.000 claims abstract description 4
- 238000010276 construction Methods 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 14
- 235000013312 flour Nutrition 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 238000013461 design Methods 0.000 claims description 7
- 238000004088 simulation Methods 0.000 claims description 7
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000012188 paraffin wax Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000004458 analytical method Methods 0.000 claims description 3
- 238000007405 data analysis Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 230000002787 reinforcement Effects 0.000 claims description 3
- 239000003566 sealing material Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 239000007787 solid Substances 0.000 claims 2
- 229910052742 iron Inorganic materials 0.000 claims 1
- 210000003205 muscle Anatomy 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 5
- 230000035699 permeability Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 238000009530 blood pressure measurement Methods 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000001066 destructive effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005065 mining Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002990 reinforced plastic Substances 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/0806—Details, e.g. sample holders, mounting samples for testing
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid Mechanics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a kind of multimedium infiltration experiment device, including test specimen tube, gravel sample layer is divided into test specimen tube from top to bottom, coagulation soil sample layer with crack, rubble sample layer, the bottom of rubble sample layer is provided with filter plate, the sand Plastic Drum that is filled with water is provided with below filter plate, the top of gravel sample layer is provided with seal, the bottom of gravel sample layer, pars intermedia, top is connected to No. 1 pressure-measuring pipe, No. 2 pressure-measuring pipes, No. 3 pressure-measuring pipes, No. 1 pressure-measuring pipe, No. 2 pressure-measuring pipes, No. 3 other ends of pressure-measuring pipe are close to be connected with graph paper, the top of gravel sample layer is connected with water tank by conduit, the Fractured zone of the coagulation soil sample layer with crack is passed through thin wire, the bottom of Fractured zone is provided with thin plastic skin with top end face, the top of thin wire connects thin plastic skin bottom through filter plate center and twists into one iron wire.
Description
Technical field
The present invention relates to mineral engineering field, more particularly to a kind of multimedium infiltration experiment device and its test side
Method.
Background technology
Colliery is exploited under Porosity Aquifer, and it is that Porosity Aquifer water (sand) passes through water flowing fractured zone that maximum water damage is threatened
Burst into goaf, cause disaster accident.Once there is Porosity Aquifer and dashed forward in the fully-mechanized mining working of Northern Huaihe River Anhui coalfield Taoyuan Coal Mine 1022
The routed sand accident of water, causes 5 people dead, the tens million of units of direct economic loss；Huaibei Coalfield Qidong Coal Mine 3222 working faces once occurred
The prominent watered-out well accident of Porosity Aquifer, loses several hundred million units.
Generally there is " three bands " in roof overburden in seam mining：Caving zone, water flowing fractured zone are followed successively by from bottom to top
And curved bel.If Porosity Aquifer is connected (accompanying drawing 1) with water flowing fractured zone, it will the routed sand of potential gushing water is threatened.But gushing water is burst sand
Measure and its last change, critical hydraulic gradient or destructive hydraulic gradient, gushing water to burst sand disaster degree and whether controllable etc., depend on
In several factors, head pressure, the particle composition, water reason parameter, water producing fractures width including Porosity Aquifer etc., normal conditions
Under, exploitation water sand permeability test, quantitative study pore media (Porosity Aquifer) reclaimed water under Porosity Aquifer are done before exploitation
Sand passes through many influence factors of the rheological characteristic of pore media (caving zone) by fissuted medium (water flowing fractured zone) again.
Mostly it is the infiltration system for testing Single Medium (such as sand sample or sticky soil sample) on medium osmosis experiment in engineering
Number, existing device has soil sample pipe permeameter, 70 type permeameters (including improved 70 type permeameter) etc..But for medium
The infiltration experiment device of alternating layers, is currently in space state.
The content of the invention
It is an object of the invention to overcome the deficiencies in the prior art, there is provided a kind of multimedium infiltration experiment device.
The present invention is achieved by the following technical solutions：A kind of multimedium infiltration experiment device, including test specimen tube, it is described
Gravel sample layer, the coagulation soil sample layer with crack, rubble sample layer, the bottom of the rubble sample layer are divided into test specimen tube from top to bottom
Portion is provided with filter plate, and the sand Plastic Drum that is filled with water is provided with below the filter plate, and the top of the gravel sample layer is provided with seal, the sand
The bottom of gravel sample floor, pars intermedia, top are connected to No. 1 pressure-measuring pipe, No. 2 pressure-measuring pipes, No. 3 pressure-measuring pipes, No. 1 pressure measurement
Pipe, No. 2 pressure-measuring pipes, the other ends of No. 3 pressure-measuring pipes are close to be connected with graph paper, and the top of the gravel sample layer is connected by conduit
Water tank is connected to, the Fractured zone of the coagulation soil sample layer with crack is passed through thin wire, the bottom of the Fractured zone and top end
Face is provided with thin plastic skin, and the top of the thin wire connects thin plastic skin bottom through filter plate center and twists into one iron wire.
Used as one of preferred embodiment of the invention, also including water intaking valve, the water intaking valve is located between water tank and test specimen tube.
Used as one of preferred embodiment of the invention, the water tank is Height Adjustable water tank and hangs on wall.
As one of preferred embodiment of the invention, the gravel sample layer simulation Porosity Aquifer, the coagulation with crack
Soil sample layer simulates water flowing fractured zone, the rubble sample layer simulation caving zone.
Used as one of preferred embodiment of the invention, the test specimen tube is steel drum.
Used as one of preferred embodiment of the invention, also including supporting construction and stirrup, the supporting construction includes support bottom
Seat and rack rod, vertically opposite on the bracket base to be provided with a pair of brackets vertical rod, each described rack rod and support bottom
Reinforcement protection support is provided between seat, stirrup is welded with the sample drum outer wall, the test specimen tube is by stirrup and support
Structure is connected.
Used as one of preferred embodiment of the invention, also including pressurization bolt and fixed crosspiece, the fixed crosspiece level sets
Between rack rod, the pressurization bolt jack matched with pressurization bolt, the pressurization spiral shell are provided with the middle of the fixed crosspiece
Bolt bottom connects seal, and upper end passes through pressurization bolt jack.
Used as one of preferred embodiment of the invention, also including latch, the fixed crosspiece is provided with rack rod junction
The pin hole matched with latch.
As one of preferred embodiment of the invention, what the water sand that the filter plate upper and lower end face is provided with sand supplying gravel sample was oozed out
Mesh, the area occupation ratio 75% or so of the mesh, the filter plate surrounding is by four screw nuts for matching and test specimen tube
Wall is fixedly linked.
The invention also discloses a kind of method of testing of multimedium infiltration experiment device, including installation method and experiment side
Method；
The installation method is comprised the following steps：
The first step：By sample tub in supporting construction and fixed；
Second step：Filter plate is installed, i.e., filter plate is fixed on test specimen tube bottom with four screws；
3rd step：Thin wire is passed through from filter plate center mesh, lower end stays 15cm long；
4th step：The rubble sample layer that installation has been configured, top surface generally remains level, thin in the crack position paving of coagulation soil sample
Plastic skin (is bound on thin wire), and thin plastic skin area is slightly larger than crack area；
5th step：Prefabricated band crack coagulation soil sample layer is installed, thin wire is passed through from crack, can be some with branch
Root, but will twist in into one, to pull out simultaneously, the sky between concrete layer and test specimen tube inwall is sealed with the paraffin of fusing
Gap, to ensure all to be oozed out from crack from the water (sand) in gravel sample；
6th step：By concrete crack full of flour sand (record flour sand amount), then (the binding of thin plastic skin is spread in crack top surface
In on thin wire), thin plastic skin area is slightly larger than crack area, and surrounding applies a little sealing material；
7th step：The gravel sample that installation has been configured, top surface generally remains level；
8th step：Seal and fixed crosspiece are installed, pressurization bolt is tightened；
9th step：Water tank, water intaking valve are installed and are connected on test specimen tube；
Tenth step：Mounting coordinate paper and No. 1 pressure-measuring pipe, No. 2 pressure-measuring pipes, No. 3 pressure-measuring pipes.
The test method is comprised the following steps：
The first step：Plastic Drum is placed in test specimen tube just below；
Second step：Regulating tank highly, makes Porosity Aquifer (gravel sample 14) head rise to design height；
3rd step：Pull out thin wire and take the thin plastic skin of the flour sand of pre-fill and crack top bottom surface in crack out of, while note
Water sand amount in record No. 1 pressure-measuring pipe, No. 2 pressure-measuring pipes, No. 3 piezometric head data, different periods Plastic Drums is (according to test observation
Time period design requirement, by way of changing Plastic Drum, monitors different periods water sand amount)；
4th step：Data analysis, calculate, produce result.
Note：Pre-fill flour sand does not influence on the water oozed out in crack, but sand amount to oozing out has an impact and (starts period shadow
Sound is larger, to be rejected when calculating analysis；Below the period, influence is gradually reduced, so that disappearing).
Present invention advantage compared to existing technology is：(1) apparatus structure is succinct, makes and easy for installation；(2) can not only
Observation and research multimedium water permeability, can also observe and study the rheological behavior of sand；(3) sample can be prepared as needed,
To obtain the test data of more anticipations, it is contemplated that achievement is enriched, and can not only obtain the parameter values such as infiltration coefficient, but also can
To obtain gushing many influence factors (such as hole of sand rule, critical hydraulic gradient (destructive hydraulic gradient) value and water sand rheology
Grain composition, Fracture Width, the crack gradient in water-bearing layer etc.) achievement, for the routed sand mechanism of research gushing water provides scientific basis；
(4) small-sized, medium-sized or even large-scale multimedium permeability test can be carried out according to the design needs of experimental scale.
Brief description of the drawings
Fig. 1 is structural representation of the invention；
Fig. 2 is Practical Project background schematic diagram of the invention；
Fig. 3 is supporting construction schematic diagram of the invention；
Fig. 4 is the bridging mode schematic diagram of test specimen tube of the invention and supporting construction；
Fig. 5 is filter-plate structure schematic diagram of the invention；
Fig. 6 is seal scheme of installation of the invention；
Fig. 7 is coagulation soil sample layer of the invention, crack and thin plastics leather packing schematic diagram.
Specific embodiment
Embodiments of the invention are elaborated below, the present embodiment is carried out under premised on technical solution of the present invention
Implement, give detailed implementation method and specific operating process, but protection scope of the present invention is not limited to following implementations
Example.
Embodiment：
As shown in figs. 1-7：A kind of multimedium infiltration experiment device, including test specimen tube (1), from upper in the test specimen tube (1)
Gravel sample layer (14), the coagulation soil sample layer (15) with crack, rubble sample layer (16), rubble sample layer (16) are divided under
Bottom be provided with filter plate (3), be provided with the sand Plastic Drum (5) that is filled with water below the filter plate, set at the top of gravel sample layer (14)
There is seal (9), the bottom of the gravel sample floor (14), pars intermedia, top are connected to No. 1 pressure-measuring pipe (6), No. 2 pressure measurement
Pipe (7), No. 3 pressure-measuring pipes (8), No. 1 pressure-measuring pipe (6), No. 2 pressure-measuring pipes (7), No. 3 pressure-measuring pipes (8) the other end and coordinate
Paper (13) is close to be connected, and the top of gravel sample layer (14) is connected with water tank (12), the coagulation with crack by conduit
The Fractured zone of soil sample layer (15) is provided with thin plastic skin (17) through bottom and the top end face for having thin wire (4), the Fractured zone,
The top of the thin wire (4) connects thin plastic skin (17) bottom through filter plate (3) center and twists into one iron wire.
Further, also including water intaking valve (11), the water intaking valve (11) is between water tank (12) and test specimen tube (1).
Further, the water tank (12) is Height Adjustable water tank and hangs on wall.
Further, gravel sample layer (14) the simulation Porosity Aquifer, described coagulation soil sample layer (15) mould with crack
Intend water flowing fractured zone, rubble sample layer (16) the simulation caving zone.
Further, the test specimen tube (1) is steel drum.
Further, also including supporting construction (2) and stirrup (24), the supporting construction (2) includes bracket base (20)
With rack rod (21), vertically opposite on the bracket base (20) to be provided with a pair of brackets vertical rod (21), each described branch is erected
Reinforcement protection support is provided between bar (21) and bracket base (20), stirrup (24) is welded with test specimen tube (1) outer wall,
The test specimen tube (1) is connected by stirrup (24) with supporting construction (2).
Further, also including pressurization bolt (19) and fixed crosspiece (10), the fixed crosspiece level (10) is located at branch
Erect between bar (21), the pressurization bolt jack matched with pressurization bolt (19) is provided with the middle of the fixed crosspiece (10)
(22), pressurization bolt (19) bottom connects seal (9), and upper end passes through pressurization bolt jack (22).
Further, also including latch (23), the fixed crosspiece (10) is provided with and inserts with rack rod (21) junction
The pin hole that pin (23) matches.
Further, filter plate (3) upper and lower end face is provided with the mesh (25) that sand supplying gravel sample (14) water (sand) oozes out, institute
The area occupation ratio 75% or so of mesh (25) is stated, filter plate (3) surrounding passes through four screw nuts for matching (26) and sample
Cylinder (1) inwall is fixedly linked.
The invention discloses a kind of method of testing of multimedium infiltration experiment device, including installation method and test method；
The installation method is comprised the following steps：
The first step：By test specimen tube (1) frame in supporting construction (2) and fixed；
Second step：Filter plate (3) is installed, i.e., filter plate is fixed on test specimen tube (1) bottom with four screws；
3rd step：Thin wire (4) is passed through from filter plate (3) center mesh, lower end stays 15cm long；
4th step：Rubble sample layer (16) that installation has been configured, top surface generally remains level.In the crack position of coagulation soil sample
Spread thin plastic skin (being bound on thin wire).Thin plastic skin area is slightly larger than crack area；
5th step：Prefabricated band crack coagulation soil sample layer (15) is installed, thin wire (4) is passed through from crack, Ke Yifen
Zhi Ruogan roots, but will twist in into one, to pull out simultaneously.Sealed in concrete layer (15) and test specimen tube with the paraffin of fusing
Space between wall, to ensure all to be oozed out from crack from the water (sand) in gravel sample；
6th step：By concrete crack full of flour sand (record flour sand amount), then (the binding of thin plastic skin is spread in crack top surface
In on thin wire).Thin plastic skin area is slightly larger than crack area, and surrounding applies a little sealing material；
7th step：The gravel sample (14) that installation has been configured, top surface generally remains level；
8th step：Seal (9) and fixed crosspiece (10) are installed, pressurization bolt is tightened；
9th step：Water tank (12), water intaking valve (11) are installed and are connected on test specimen tube；
Tenth step：Mounting coordinate paper (13) and No. 1 pressure-measuring pipe (6), No. 2 pressure-measuring pipes (7), No. 3 pressure-measuring pipes (8).
The test method is comprised the following steps：
The first step：Plastic Drum is placed in test specimen tube just below；
Second step：Regulating tank (12) height, makes Porosity Aquifer (gravel sample 14) head rise to design height.
3rd step：Pull out thin wire and take the thin plastic skin of the flour sand of pre-fill and crack top bottom surface in crack out of, while note
Water sand amount (root in record No. 1 pressure-measuring pipe (6), No. 2 pressure-measuring pipes (7), No. 3 pressure-measuring pipe (8) head data, different periods Plastic Drums
According to test observation time period design requirement, by way of changing Plastic Drum, different periods water sand amount is monitored).
4th step：Data analysis, calculate, produce result.
Note：Pre-fill flour sand does not influence on the water oozed out in crack, but sand amount to oozing out has an impact and (starts period shadow
Sound is larger, to be rejected when calculating analysis；Below the period, influence is gradually reduced, so that disappearing).
Job readiness of the invention：Test specimen tube (1), supporting construction (2), filter plate (3), thin wire (4), be filled with water sand Plastic Drum
(5), No. 1 pressure-measuring pipe (6), No. 2 pressure-measuring pipes (7), No. 3 pressure-measuring pipes (8), seal (9), fixed crosspiece (10), water intaking valve (11),
Water tank (12) and graph paper (13)；Accessory has screw, nut, water inlet pipe, standby Plastic Drum, paraffin, thin plastic skin etc..
Porosity Aquifer, the coagulation soil sample (15) with crack are simulated with gravel sample (14) simulate water flowing fractured zone, rubble sample
(16) caving zone is simulated.
Test specimen tube (1) is steel drum, and its diameter determines according to experimental scale or testing program requirement.It is designed with into water
Hole, pressure-measuring pipe oral pore, circular hole of fixed filter plate (4) etc..And in sample drum outer wall welding 2-3 roads stirrup, with supporting construction (2)
Connect.
Supporting structure (2) is irony, and its enabling capabilities should be greater than test specimen tube and its accessory, sample and water, seal etc. are total
Weight.
The thickness of filter plate (3) will can bear the gross weights such as sample and hydraulic pressure, seal above, and screening area rate 75% is left
The right side, mesh diameter is less than caving zone rubble sample (16) grain diameter, and periphery carries four symmetrical screw holes, with sample
Four circular holes correspondence of cylinder (1) bottom.
Thin wire (4) 0.1-0.3mm, length is about 3 times of test specimen tube (1) height；Pressure-measuring pipe (6,7,8) is the nature of glass
(internal diameter 6mm or so), is fixed on metope or riser together with graph paper (13)；Water tank (12) is hung on wall (highly can be with
Regulation), it is irony, and leave apopore；Seal (9) is circular, reinforced plastics matter.
Presently preferred embodiments of the present invention is the foregoing is only, is not intended to limit the invention, it is all in essence of the invention
Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.
Claims (10)
1. a kind of multimedium infiltration experiment device, it is characterised in that including test specimen tube (1), in the test specimen tube (1) from top to bottom
It is divided into gravel sample layer (14), the coagulation soil sample layer (15) with crack, rubble sample layer (16), the bottom of rubble sample layer (16)
Portion is provided with filter plate (3), and the sand Plastic Drum (5) that is filled with water is provided with below the filter plate, is provided with close at the top of gravel sample layer (14)
Sealing (9), the bottom of the gravel sample floor (14), pars intermedia, top are connected to No. 1 pressure-measuring pipe (6), No. 2 pressure-measuring pipes
(7), No. 3 pressure-measuring pipes (8), No. 1 pressure-measuring pipe (6), No. 2 pressure-measuring pipes (7), No. 3 pressure-measuring pipes (8) the other end and graph paper
(13) it is close to be connected, the top of gravel sample layer (14) is connected with water tank (12), the concrete with crack by conduit
The Fractured zone of sample layer (15) is provided with thin plastic skin (17), institute through bottom and the top end face for having thin wire (4), the Fractured zone
The top for stating thin wire (4) connects thin plastic skin (17) bottom through filter plate (3) center and twists into one iron wire.
2. multimedium infiltration experiment device according to claim 1, it is characterised in that described also including water intaking valve (11)
Water intaking valve (11) is between water tank (12) and test specimen tube (1).
3. multimedium infiltration experiment device according to claim 1, it is characterised in that the water tank (12) is height adjustable
The water tank of section and hang on wall.
4. multimedium infiltration experiment device according to claim 1, it is characterised in that gravel sample layer (14) the simulation hole
Gap water-bearing layer, coagulation soil sample layer (15) the simulation water flowing fractured zone with crack, rubble sample layer (16) the simulation caving zone.
5. multimedium infiltration experiment device according to claim 1, it is characterised in that the test specimen tube (1) is steel circle
Cylinder.
6. multimedium infiltration experiment device according to claim 1, it is characterised in that also including supporting construction (2) and hoop
Muscle (24), the supporting construction (2) includes bracket base (20) and rack rod (21), vertical phase on the bracket base (20)
To being provided with a pair of brackets vertical rod (21), reinforcement protection branch is provided between each described rack rod (21) and bracket base (20)
Support, is welded with stirrup (24) on test specimen tube (1) outer wall, the test specimen tube (1) is by stirrup (24) and supporting construction (2) phase
Even.
7. multimedium infiltration experiment device according to claim 6, it is characterised in that also including pressurization bolt (19) with it is solid
Determine crosspiece (10), the fixed crosspiece level (10) is provided between rack rod (21) in the middle of the fixed crosspiece (10)
The pressurization bolt jack (22) matched with pressurization bolt (19), pressurization bolt (19) bottom connects seal (9), upper end
Through pressurization bolt jack (22).
8. multimedium infiltration experiment device according to claim 7, it is characterised in that described solid also including latch (23)
Determine crosspiece (10) and be provided with the pin hole matched with latch (23) with rack rod (21) junction.
9. multimedium infiltration experiment device according to claim 1, it is characterised in that on filter plate (3) upper and lower end face
It is provided with the mesh (25) that sand supplying gravel sample layer (14) water sand is oozed out downwards, the area occupation ratio 75% or so of the mesh (25), the filter
Plate (3) surrounding is fixedly linked by four screw nuts for matching (26) with test specimen tube (1) inwall.
10. according to a kind of method of testing of any described multimedium infiltration experiment devices of claim 1-9, it is characterised in that
Including installation method and test method；
The installation method is comprised the following steps：
The first step：By test specimen tube (1) frame in supporting construction (2) and fixed；
Second step：Filter plate (3) is installed, i.e., filter plate is fixed on test specimen tube (1) bottom with four screws；
3rd step：Thin wire (4) is passed through from filter plate (3) center mesh, lower end stays 15cm long；
4th step：Rubble sample layer (16) that installation has been configured, top surface generally remains level, thin in the crack position paving of coagulation soil sample
Plastic skin (is bound on thin wire), and thin plastic skin area is slightly larger than crack area；
5th step：Prefabricated band crack coagulation soil sample layer (15) is installed, thin wire (4) is passed through from crack, if can be with branch
Dry root, but will twist in into one, so as to simultaneously pull out, with fusing paraffin seal concrete layer (15) with test specimen tube inwall it
Between space, to ensure all to be oozed out from crack from the water sand in gravel sample；
6th step：By concrete crack full of flour sand (record flour sand amount), then spread thin plastic skin in crack top surface and (be bound to thin
On iron wire), thin plastic skin area is slightly larger than crack area, and surrounding applies a little sealing material；
7th step：The gravel sample (14) that installation has been configured, top surface generally remains level；
8th step：Seal (9) and fixed crosspiece (10) are installed, pressurization bolt is tightened；
9th step：Water tank (12), water intaking valve (11) are installed and are connected on test specimen tube；
Tenth step：Mounting coordinate paper (13) and No. 1 pressure-measuring pipe (6), No. 2 pressure-measuring pipes (7), No. 3 pressure-measuring pipes (8).
The test method is comprised the following steps：
The first step：Plastic Drum is placed in test specimen tube just below；
Second step：Regulating tank (12) height, makes Porosity Aquifer (gravel sample 14) head rise to design height；
3rd step：Thin wire and the pre-fill flour sand and the thin plastic skin of crack top bottom surface taken out of in crack are pulled out, while record 1
Water sand amount in pressure-measuring pipe (6), No. 2 pressure-measuring pipes (7), No. 3 pressure-measuring pipe (8) head data, different periods Plastic Drums is (according to experiment
Observation period design requirement, by way of changing Plastic Drum, monitors different periods water sand amount)；
4th step：Data analysis, calculate, produce result.
Note：Pre-fill flour sand does not influence on the water oozed out in crack, but have an impact on the sand amount oozed out (start the period influence compared with
Greatly, to be rejected when calculating analysis；Below the period, influence is gradually reduced, so that disappearing).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710085245.2A CN106769787A (en) | 2017-02-17 | 2017-02-17 | A kind of multimedium infiltration experiment device and its method of testing |
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| CN107014739A (en) * | 2017-06-16 | 2017-08-04 | 成都理工大学 | Undisturbed soil infiltration experiment device and the method for measuring infiltration coefficient |
| CN107421868A (en) * | 2017-07-19 | 2017-12-01 | 武汉大学 | The assay method of unsaturated soil moisture diffusance based on the response of Complete heart block flow process |
| CN108107185A (en) * | 2017-11-29 | 2018-06-01 | 中国神华能源股份有限公司 | Purification of mine drainage experiment test device and its test method |
| CN108398307A (en) * | 2018-05-20 | 2018-08-14 | 郑州大学 | A kind of impervious sample production method of soil cement |
| CN109307633A (en) * | 2018-11-23 | 2019-02-05 | 合肥工业大学 | Gravelly soil internal corrosion testing equipment and test method under a kind of seepage effect |
| CN112945826A (en) * | 2021-01-29 | 2021-06-11 | 河海大学 | Gradient ratio experimental device and experimental method |
| CN113588510A (en) * | 2021-06-11 | 2021-11-02 | 南京林业大学 | Device for undisturbed soil column infiltration test and operation method thereof |
| CN114264792A (en) * | 2021-12-23 | 2022-04-01 | 中国矿业大学 | Water inrush and sand bursting water sand migration simulation test device and test method |
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| CN112945826A (en) * | 2021-01-29 | 2021-06-11 | 河海大学 | Gradient ratio experimental device and experimental method |
| CN112945826B (en) * | 2021-01-29 | 2022-09-30 | 河海大学 | Gradient ratio experimental device and experimental method |
| CN113588510A (en) * | 2021-06-11 | 2021-11-02 | 南京林业大学 | Device for undisturbed soil column infiltration test and operation method thereof |
| CN114264792A (en) * | 2021-12-23 | 2022-04-01 | 中国矿业大学 | Water inrush and sand bursting water sand migration simulation test device and test method |
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