CN109029913A - Study the experimental rig and its method of calcium soil two-dimensional hydrodynamic dispersion characteristic - Google Patents
Study the experimental rig and its method of calcium soil two-dimensional hydrodynamic dispersion characteristic Download PDFInfo
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- CN109029913A CN109029913A CN201810906566.9A CN201810906566A CN109029913A CN 109029913 A CN109029913 A CN 109029913A CN 201810906566 A CN201810906566 A CN 201810906566A CN 109029913 A CN109029913 A CN 109029913A
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- 239000002689 soil Substances 0.000 title claims abstract description 124
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 29
- 239000011575 calcium Substances 0.000 title claims abstract description 29
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 239000006185 dispersion Substances 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 11
- 239000013505 freshwater Substances 0.000 claims abstract description 74
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000007788 liquid Substances 0.000 claims abstract description 23
- 239000002699 waste material Substances 0.000 claims abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 9
- 238000011160 research Methods 0.000 claims abstract description 8
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 10
- 230000004888 barrier function Effects 0.000 claims description 7
- 239000000839 emulsion Substances 0.000 claims description 5
- 239000000700 radioactive tracer Substances 0.000 claims description 2
- 238000010998 test method Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 claims 2
- 230000037431 insertion Effects 0.000 claims 2
- 241000233855 Orchidaceae Species 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 3
- 238000002474 experimental method Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 150000003839 salts Chemical class 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 4
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000003673 groundwater Substances 0.000 description 2
- 241001474374 Blennius Species 0.000 description 1
- 235000014653 Carica parviflora Nutrition 0.000 description 1
- NYNKCGWJPNZJMI-UHFFFAOYSA-N Clebopride malate Chemical compound [O-]C(=O)C(O)CC(O)=O.COC1=CC(N)=C(Cl)C=C1C(=O)NC1CC[NH+](CC=2C=CC=CC=2)CC1 NYNKCGWJPNZJMI-UHFFFAOYSA-N 0.000 description 1
- 241000243321 Cnidaria Species 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000013507 mapping Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M10/00—Hydrodynamic testing; Arrangements in or on ship-testing tanks or water tunnels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L19/00—Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
- G01L19/08—Means for indicating or recording, e.g. for remote indication
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/08—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics
- G09B23/12—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for statics or dynamics of liquids or gases
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Pure & Applied Mathematics (AREA)
- Computational Mathematics (AREA)
- Mathematical Analysis (AREA)
- Mathematical Optimization (AREA)
- Mathematical Physics (AREA)
- Algebra (AREA)
- Business, Economics & Management (AREA)
- Fluid Mechanics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Theoretical Computer Science (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Sampling And Sample Adjustment (AREA)
Abstract
The invention discloses a kind of experimental rigs and its method for studying calcium soil two-dimensional hydrodynamic dispersion characteristic, are related to the two-dimensional hydrodynamic dispersion technology in rock soil medium field.This system includes research object --- native calcium soil；It is provided with water supplying unit, disperse unit and acquisition unit；Water supplying unit is connected with disperse unit, and disperse unit is connected with acquisition unit.Water supplying unit is made of freshwater level case and fresh-water cask；Disperse unit is made of disperse soil box lid, disperse soil box and waste liquid barrel；Acquisition unit is made of three parameter sensors of soil, data collector and computer.The present invention can complete two-dimensional hydrodynamic dispersion experiment indoors, repeat test, and settable soil class matches, native density, the Variable Conditions such as disperse head and salt water concentration；It is easy to operate, do not need too many tedious steps；Manufacturing cost is low, can carry out multiple groups test simultaneously, high-efficient.
Description
Technical field
The present invention relates to the two-dimensional hydrodynamic dispersion technology in rock soil medium field more particularly to a kind of research calcium soil two dimensions
The experimental rig and its method of hydrodynamic dispersion characteristic.
Background technique
After islands and reefs hydraulic reclamation, the variation of body of groundwater directly influences the survival state of islands and reefs vegetation, if can be formed stablize it is light
Water body then plays an important role to islands and reefs operation；Wherein disperse is to form limnal one big influence factor.Master as hydraulic reclamation island
Body medium, calcium soil are a kind of special dependent territory different from Lu Yuan soil, and calcium soil is also referred to as carbonate soil, typically refer to include
The Special Rock medium rich in calcium carbonate or other carbonate substances of marine organisms (coral, seaweed and shell etc.).It is calcareous
Soil is for a long time in carbonate solution, through physics, biological chemistry action, including the broken and cementing mistake of organic clast and landwaste
Journey, by certain pressure, temperature and the change procedure of dissolution, and a kind of carbonate sediment formed.Due to itself and Lu Yuan
Larger difference existing for soil, existing soil dispersive test are not suitable for calcium soil, and due to the groundwater dynamics of hydraulic reclamation islands and reefs
Complicated condition is difficult to realize scene Dispersion Test, therefore design a kind of indoor disperse simulator to have great significance.
Summary of the invention
The object of the invention is that overcoming the problems, such as of the existing technology, a kind of calcium soil two-dimensional hydrodynamic dispersion is provided
The experimental rig and its method of characteristic understand fully the dispersive test of calcium soil to carry out indoor Dispersion Test.
One, the experimental rig (abbreviation device) of calcium soil two-dimensional hydrodynamic dispersion characteristic is studied:
The present apparatus includes research object --- calcium soil；
It is provided with water supplying unit, disperse unit and acquisition unit；
Water supplying unit is connected with disperse unit；
Disperse unit is connected with acquisition unit；
Water supplying unit is made of freshwater level case and fresh-water cask；
Disperse unit is made of disperse soil box lid, disperse soil box and waste liquid barrel；
Acquisition unit is made of three parameter sensors of soil, data collector and computer；
Its position and connection relationship are:
Disperse soil box is placed on level ground；
Disperse soil box lid is placed on disperse soil box and is connected and fixed；
Freshwater level case is placed on a certain height right above disperse soil box, and bottom fresh water outlet mouth passes through emulsion tube and disperse
The fresh water water inlet of soil box tops connects；
Fresh-water cask is placed on level ground, is supplied water for freshwater level case；
Waste liquid barrel is placed on level ground, receives the liquid being discharged from waste liquid port；
Three parameter sensors of soil are inserted in portion's sensor socket of disperse soil box tops, with data collector and computer according to
Secondary connection.
Two, the infiltrative test method of individual particle inner through hole gap (abbreviation method) is studied
This method includes the following steps:
1. disperse soil box is placed on level ground；
2. gravel buffer layer is filled on the outside of to disperse soil box both ends buffer layer barrier, to 22 both ends buffer layer barrier of disperse soil box
Inside layering loads calcium soil；
3. disperse soil box lid is mounted at the top of disperse soil box；
4. fresh water outlet mouth is connect with the fresh water water inlet of disperse soil box tops with emulsion tube, and temporary close fresh water
Water outlet；
5. fresh-water cask supplies water to freshwater level case and keeps certain water level；
6. opening fresh water outlet mouth and waste liquid port, when exhaust outlet starts to be discharged, closing exhaust outlet keeps calcium soil fresh water full
With；
7. three parameter sensors of soil are connect debugging with data collector and computer, after inserted by sensor socket
Enter；
8. keep freshwater level case to continue for fresh water, since feeding port put into rapidly fixed amount tracer and timing；
9. the Concentration-time for drawing each sensor socket position is bent according to the data that three parameter sensors of soil record
Line, concentration shows that end is tested when becoming fresh water concentration again at the sensor socket closest to waste liquid port；
10. calculating dispersion coefficient, steps are as follows for calculating:
A, the data measured according to two three parameter sensors of sensor socket soil in centre, find cmax, and tmax；
B, according to formulaA series of (c, t) are handled
A series of (X, Y) coordinates are obtained, draws in rectangular coordinate system, obtains slope RL；
C, according to formula Calculate longitudinal gas flow DLWith average water flow velocity
u；
D, according to not with the collected data of three parameter sensors at feeding port sensor socket on the same axis, root
Lateral dispersion coefficient D is calculated according to following formulaT:
In formula:
DL- longitudinal gas flow, cm2/s；
DT- lateral dispersion coefficient, cm2/s；
X-disperse length, cm；
X '-abscissa, cm；
Y '-ordinate, cm；
cmaxThe maximum concentration that-certain point measures；
tmaxThe time when maximum concentration of-certain point, s；
U-mean flow rate, cm/s.
The present invention has the advantages that following and good effect:
1. two-dimensional hydrodynamic dispersion experiment can be completed indoors, test is repeated, settable soil class matches, native density, more
The Variable Conditions such as sprinkling head and salt water concentration；
2. it is easy to operate, do not need too many tedious steps；
3. manufacturing cost is low, multiple groups test can be carried out simultaneously, it is high-efficient.
Detailed description of the invention
Fig. 1 is the structural block diagram of the present apparatus；
Fig. 2 is the structural schematic diagram of the present apparatus；
Fig. 3 is the structural schematic diagram of water supplying unit 10；
Fig. 4 is the structural schematic diagram of disperse unit 20；
Fig. 5 is the structural schematic diagram of disperse slot cover 21；
Fig. 6 is the structural schematic diagram of disperse slot 22；
Fig. 7 is the structural schematic diagram of acquisition unit 30.
In figure:
00-calcium soil；
10-water supplying units；
11-freshwater level casees,
111-fresh water outlet mouths, 112-freshwater level mouths；
12-fresh-water casks；
20-disperse units
21-disperse soil box lids,
211-screw holes, 212-fresh water water inlets, 213-exhaust outlets, 214-feeding ports,
215- sensor socket, 216- waste liquid port；
22- disperse soil box,
221- rectangular flange, 222- screw hole, 223- buffer layer barrier；
23- waste liquid barrel；
30- acquisition unit
Three parameter sensors of 31- soil；
32-data collectors；
33- computer.
Specific embodiment
It is described in detail with reference to the accompanying drawings and examples:
One, device
1, overall
Such as Fig. 1,2, the present apparatus includes research object --- calcium soil 00；
It is provided with water supplying unit 10, disperse unit 20 and acquisition unit 30；
Water supplying unit 10 and disperse unit 20 connect；
Disperse unit 20 and acquisition unit 30 connect；
Water supplying unit 10 is made of freshwater level case 11 and fresh-water cask 12；
Disperse unit 20 is made of disperse soil box lid 21, disperse soil box 22 and waste liquid barrel 23；
Acquisition unit 30 is made of three parameter sensors 31 of soil, data collector 32 and computer 33；
Its position and connection relationship are:
Disperse soil box 22 is placed on level ground；
Disperse soil box lid 21 is placed on disperse soil box 22 and is connected and fixed；
Freshwater level case 11 is placed on a certain height, bottom fresh water outlet mouth 111 right above disperse soil box and passes through emulsion tube
It is connect with the fresh water water inlet 212 at 21 top of disperse soil box lid；
Fresh-water cask 12 is placed on level ground, is supplied water for freshwater level case 11；
Waste liquid barrel 23 is placed on level ground, receives the liquid being discharged from waste liquid port 216；
Three parameter sensors 31 of soil are inserted in portion's sensor socket 215 at 21 top of disperse soil box lid, with data collector
32 and computer 33 be sequentially connected.
Working mechanism: solute is spread under flow action is called mechanic diffusion, when water velocity is zero, the diffusion of solute
Molecule is made to spread, the two is called hydrodynamic dispersion jointly, according to the concentration value that water exit position acquires, draws relative concentration-time
Curve can calculate the dispersion coefficient at respective coordinates by formula using linear mapping method from curve acquisition parameter.
2, functional unit
1) water supplying unit
Such as Fig. 3, water supplying unit 10 includes freshwater level case 11 and fresh-water cask 12；
Its position and connection relationship are:
Fresh-water cask 12 is provided with fresh water, supplies water for freshwater level case 11.
(1) freshwater level case 11
Such as Fig. 3, freshwater level case 11 is open-topped cuboid container, and positive side and bottom surface are provided with fresh water water
Position mouth 112 and fresh water outlet mouth 111；
Its function is: the water source of fresh water for determining head is provided for disperse soil box 22.
(2) fresh-water cask 13
Such as Fig. 3, fresh-water cask 12 is the cylindric bucket of top opening；
Its function is: providing fresh water for freshwater level case 11.
2) disperse unit 20
Such as Fig. 4, disperse unit 20 includes disperse soil box lid 21, disperse soil box 22 and waste liquid barrel 23, and disperse soil box 22 is built-in
There is calcium soil 00.
(1) disperse soil box lid 21
Such as Fig. 5, the top of disperse soil box lid 21 is provided with soil box lid screw hole 211, fresh water water inlet 212, exhaust outlet
213, feeding port 214, sensor socket 215 and waste liquid port 216；
Its function is: providing enclosed environment for disperse, for injection fresh water, feeds intake, surveys water and drain provides opening.
(2) disperse soil box 22
Such as Fig. 6, it is provided with calcium soil 00 in disperse soil box 22, rectangular flange 221 is provided at the top of disperse soil box 22,
Flange is equipped with soil box screw hole 222, and position is corresponding with soil box lid screw hole 211, and both ends are provided with slow in disperse soil box 22
Rush layer barrier 223；
Its function is: disperse main body, provides disperse place and setting buffer layer.
3) acquisition unit 30
Such as Fig. 7, acquisition unit 30 includes three parameter sensors 31 of soil, data collector 32 and computer 33；
Three parameter sensors 31 of soil are inserted into the calcium soil 00 of disperse soil box 22 through sensor jack 215；
Three parameter sensors 31 of soil, the connection of data collector 32 and computer 33 are sequentially connected.
Its function is: the real-time concentration of water in measurement calcium soil 00.
Claims (5)
1. a kind of experimental rig for studying calcium soil two-dimensional hydrodynamic dispersion characteristic, including research object --- native calcium soil
(00)；It is characterized by:
It is provided with water supplying unit (10), disperse unit (20) and acquisition unit (30)；
Water supplying unit (10) and disperse unit (20) connection, disperse unit (20) and acquisition unit (30) connection；
Water supplying unit (10) is made of freshwater level case (11) and fresh-water cask (12)；
Disperse unit (20) is made of disperse soil box lid (21), disperse soil box (22) and waste liquid barrel (23)；
Acquisition unit (30) is made of three parameter sensors of soil (31), data collector (32) and computer (33)；
Its position and connection relationship are:
Disperse soil box (22) is placed on level ground；
Disperse soil box lid (21) is placed on disperse soil box (22) and is connected and fixed；
Freshwater level case (11) is placed on a certain height, bottom fresh water outlet mouth (111) right above disperse soil box and passes through emulsion tube
It is connect with the fresh water water inlet (212) at the top of disperse soil box lid (21)；
Fresh-water cask (12) is placed on level ground, is supplied water for freshwater level case (11)；
Waste liquid barrel (23) is placed on level ground, receives the liquid being discharged from waste liquid port (216)；
Three parameter sensors of soil (31) are inserted in portion's sensor socket (215) at the top of disperse soil box lid (21), acquire with data
Device (32) and computer (33) are sequentially connected.
2. the experimental rig of research calcium soil two-dimensional hydrodynamic dispersion characteristic according to claim 1, it is characterised in that:
The water supplying unit (10) includes freshwater level case (11) and fresh-water cask (12)；
Fresh-water cask (12) is provided with fresh water, supplies water for freshwater level case (11)；
Freshwater level case (11) is open-topped cuboid container, and positive side and bottom surface are provided with freshwater level mouth
(112) and fresh water outlet mouth (111)；
Fresh-water cask (12) is the cylindric bucket of top opening.
3. the experimental rig of research calcium soil two-dimensional hydrodynamic dispersion characteristic according to claim 1, it is characterised in that:
The disperse unit (20) includes disperse soil box lid (21), disperse soil box (22) and waste liquid barrel (23), disperse soil box
(22) it is provided with calcium soil (00)；
Soil box lid screw hole (211), fresh water water inlet (212), exhaust outlet are provided at the top of disperse soil box lid (21)
(213), feeding port (214), sensor socket (215) and waste liquid port (216)；
It is provided with calcium soil (00) in disperse soil box (22), rectangular flange (221) are provided at the top of disperse soil box (22), in method
Orchid is equipped with soil box screw hole (222), and position is corresponding with soil box lid screw hole (211), is arranged at the interior both ends of disperse soil box (22)
There are buffer layer barrier (223).
4. the experimental rig of research calcium soil two-dimensional hydrodynamic dispersion characteristic according to claim 1, it is characterised in that:
The acquisition unit (30) includes three parameter sensors of soil (31), data collector (32) and computer (33)；
In calcium soil (00) of three parameter sensors of soil (31) through sensor jack (215) insertion disperse soil box (22)；
Three parameter sensors of soil (31), data collector (32) connection and computer (33) are sequentially connected.
5. the test method based on experimental rig described in claim 1-4, it is characterised in that:
1. disperse soil box (22) is placed on level ground；
2. gravel buffer layer is filled on the outside of to disperse soil box (22) both ends buffer layer barrier (223), it is slow to disperse soil box (22) both ends
It rushes layering on the inside of layer barrier (223) and loads calcium soil (00)；
3. disperse soil box lid (21) is mounted at the top of disperse soil box (22)；
4. fresh water outlet mouth (111) is connect with the fresh water water inlet (212) at the top of disperse soil box lid (21) with emulsion tube, and temporarily
When close fresh water outlet mouth (111)；
5. fresh-water cask (12) supplies water to freshwater level case (11) and keeps certain water level；
6. fresh water outlet mouth (111) and waste liquid port (216) are opened, when exhaust outlet (213) starts to be discharged, closing exhaust outlet (213),
It is saturated calcium soil (00) fresh water；
7. three parameter sensors of soil (31) are connect debugging with data collector (32) and computer (33), after by sensor
Socket (215) insertion；
8. keep freshwater level case (11) to continue for fresh water, since feeding port (214) rapidly investment fixed amount tracer and count
When；
9. according to three parameter sensors of soil (31) record data, draw each sensor socket (215) position concentration-when
Half interval contour, concentration is shown when becoming fresh water concentration again at the sensor socket (215) closest to waste liquid port (216), is terminated
Test；
10. calculating dispersion coefficient, steps are as follows for calculating:
A, the data measured according to two three parameter sensors of sensor socket soil in centre, find cmax, and tmax；
B, according to formulaA series of (c, t) are handled to obtain
A series of (X, Y) coordinates, draw in rectangular coordinate system, obtain slope RL；
C, according to formula Calculate longitudinal gas flow DLWith average water flow velocity u；
D, according to not with the collected data of three parameter sensors at feeding port sensor socket on the same axis, according to such as
Lower formula calculates lateral dispersion coefficient DT:
In formula:
DL- longitudinal gas flow, cm2/s；
DT- lateral dispersion coefficient, cm2/s；
X-disperse length, cm；
X '-abscissa, cm；
Y '-ordinate, cm；
cmaxThe maximum concentration that-certain point measures；
tmaxThe time when maximum concentration of-certain point, s；
U-mean flow rate, cm/s.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810906566.9A CN109029913B (en) | 2018-08-10 | 2018-08-10 | Test device and method for researching two-dimensional hydrodynamic dispersion characteristics of calcareous soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810906566.9A CN109029913B (en) | 2018-08-10 | 2018-08-10 | Test device and method for researching two-dimensional hydrodynamic dispersion characteristics of calcareous soil |
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| Publication Number | Publication Date |
|---|---|
| CN109029913A true CN109029913A (en) | 2018-12-18 |
| CN109029913B CN109029913B (en) | 2023-10-31 |
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2018
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| CN109029913B (en) | 2023-10-31 |
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