CN105866001B - A kind of Rock And Soil osmotic coefficient investigating device and method based on water base fluorescer dilution method - Google Patents
A kind of Rock And Soil osmotic coefficient investigating device and method based on water base fluorescer dilution method Download PDFInfo
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- CN105866001B CN105866001B CN201610238984.6A CN201610238984A CN105866001B CN 105866001 B CN105866001 B CN 105866001B CN 201610238984 A CN201610238984 A CN 201610238984A CN 105866001 B CN105866001 B CN 105866001B
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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
- G01N15/082—Investigating permeability by forcing a fluid through a sample
Abstract
The invention discloses a kind of Rock And Soil osmotic coefficient investigating device and methods based on water base fluorescer dilution method, it includes liquid supply box, the bottom of liquid supply box is connected with water inlet pipe, water check valve is installed on water inlet pipe, place lucite cylinder in the underface of water inlet pipe, ground sample to be measured is filled inside lucite cylinder, the top layer of ground sample to be measured is equipped with gravel layer, and bottom is equipped with permeable gauze and Steel net；The bottom symmetrical of lucite cylinder is provided with exhaust apparatus；The bottom of the machine glass infuser is provided with fluorescer delivery device, and fluorescer delivery device is connected by data collector with fluorescence detector control terminal；The fluorescer delivery device is connected with fluorescence detection subsystem；The outside of the lucite cylinder is provided with temperature control system；The bottom of the lucite cylinder is provided with outlet tube, and liquid holding groove is provided with immediately below outlet tube.Percolation flow velocity is immediately arrived at by measuring fluorescence agent concentration, wherein fluorescence intensity is realized by fluorescence detection subsystem.
Description
Technical field
The invention belongs to Geotechnical Engineering fields, and in particular to a kind of laboratory measures Rock And Soil sample infiltration coefficient
Device and method.
Background technology
Rock And Soil seepage flow is to influence side slope foundation pit, the very important factor of library bank stability of earth dams, therefore obtain by testing
Accurate soil body permeability parameter has important engineering significance and scientific research value.French scientist Darcy by many experiments,
It is proposed within 1856 Percolation Law --- Darcy's law of the water in the soil body.Darcy flow instrument is as measurement infiltration coefficient routine instrument
Device measures coarse-grained soil infiltration coefficient with constant head test, and variable head permeability test is measured fine grained soil infiltration coefficient, oozed using loading
Saturating test method determination cohesive soil infiltration coefficient.Conventional darcy flow can only survey single mass soil mass permeability, and can not simulate multiple
The flow event of Rock And Soil, measurement accuracy are also to be improved under heterocycle border.
The granularity and mineralogical composition of the infiltration coefficient of the soil body and soil, native structure construction, the viscosity and grogs knot of water
Heshui film thickness is related.Infiltration coefficient is an important indicator for reflecting soil body penetration ability, how accurately to measure Rock And Soil and exists
Infiltration coefficient under different seepage flow working conditions is the much-talked-about topic that soil test person studies for a long period of time.For conventional darcy flow
Instrument need to use distinct device, researcher to propose largely simulate the seepage flow examination of different seepage flow operating modes heterogeneity Rock And Soil
Instrument is tested, the more conventional seepage instrument of structure is complicated, and used principle is similar.Pressure-measuring pipe is set by soil body penetration container outer wall,
Piezometric head when measuring seepage stability, amount of seepage measures volume by graduated cylinder, and then calculates soil body osmotic coefficient.By air
Moisture can evaporate during the test in the influence of humiture, pressure-measuring pipe and graduated cylinder.The infiltration coefficient range of soil is 10-1Cm/s~
10-9Between cm/s, for the very low soil of permeability, using conventional method by moisture evaporation influenced to measure infiltration coefficient error compared with
Greatly, and belong to systematic error, can not eliminate.
Invention content
The purpose of the present apparatus is to overcome above-mentioned the deficiencies in the prior art, and it is an object of the present invention to provide a kind of being based on water base fluorescer
The Rock And Soil osmotic coefficient investigating device and method of dilution method.Moser proposes single hole point dilution method in nineteen fifty-seven, establishes seepage flow
Relationship in dilution between fluorescence agent concentration and seepage velocity：By measuring fluorescence agent concentration come directly
Show that percolation flow velocity, wherein fluorescence intensity are realized by fluorescence detection subsystem.
Fluorescer is excited by the higher special wavelength light of energy, launches wavelength fluorescence more longer than excitation wavelength, and
Fluorescence intensity meets lambert with fluorescence agent concentration --- Beer law.According to this principle, the water base fluorescer luyor- of selection
6200 have that property is stable, non-toxic degradable, the high feature of easy detection sensitivity, establish it is a set of can be real according to fluorescence agent concentration
When measure Rock And Soil seepage velocity system.
To achieve the above object, the technical solution adopted in the present invention is：A kind of rock based on water base fluorescer dilution method
Soil body osmotic coefficient measurement device, it includes liquid supply box, and the bottom of liquid supply box is connected with water inlet pipe, sealing is equipped on water inlet pipe
Lucite cylinder is placed in the underface of valve, water inlet pipe, and ground sample to be measured, the ground examination to be measured are filled inside lucite cylinder
The top layer of sample is equipped with gravel layer, and bottom is equipped with permeable gauze and Steel net；The bottom symmetrical of the lucite cylinder is provided with
Exhaust apparatus；The bottom of the machine glass infuser is provided with fluorescer delivery device, and fluorescer delivery device passes through data collector
It is connected with fluorescence detector control terminal；The fluorescer delivery device is connected with fluorescence detection subsystem；The organic glass
The outside of cylinder is provided with temperature control system；The bottom of the lucite cylinder is provided with outlet tube, is provided with immediately below outlet tube
Liquid holding groove.
The exhaust apparatus includes exhaust pipe, and air bleeding valve is equipped on exhaust pipe.
The fluorescer delivery device includes that fluorescer launches controller and fluorescer blender automatically；The fluorescer is certainly
Dynamic dispensing controller is connected with fluorescer syringe controls the injection volume of fluorescence diluent；The fluorescer blender includes stirring
The output shaft of power plant, stirring power device is equipped with stirring arm controller, stirs and is equipped on the output shaft of arm controller
Mixing arm.
The fluorescence detection subsystem includes ultraviolet LED lamp, and ultraviolet LED lamp is arranged in the head of support buttress shaft, the purple
Inside insulation wire casing, the tail portion of the support buttress shaft is provided with photo resistance, supports in buttress shaft for the power cord setting of outer LED lamp
Interlude of the portion from its head to tail portion is sequentially installed with concavees lens, convex lens and spike filter；The concavees lens and convex lens
It is machined with inlet opening on support buttress shaft between mirror, fluorescent liquid is facilitated to enter.
The temperature control system includes temperature sensor, compressor and heat-transfer pipe, and the temperature sensor is using Pt100 platinum electricity
Resistance is for detecting temperature；The compressor and heat-transfer pipe are for being adjusted temperature control the temperature inside the box；The temperature sensor with
Main control chip is connected, and the main control chip uses microcontroller STM32；Under the main control chip is realized by RS232 communication protocols
The communication of position machine and computer, the Pt100 platinum resistance and XTR105 combinations are converted into stable analog signal amount, the simulation
Semaphore will be changed into digital quantity input main control chip by AD7705, and main control chip just obtains Current Temperatures by calculating
Value；Main control chip passes through pid algorithm, calculates and needs output current size, write in MAX538 chips, MAX538 chips will count
Word amount is converted into analog input XTR110, to obtain stable electric current output, controls compressor and heat-transfer pipe, reaches adjusting
Experimental temperature purpose.
The fluorescence diluent has property stabilization, non-toxic degradable using water base fluorescer luyor-6200, easily detects
The characteristics of high sensitivity.
Rock And Soil osmotic coefficient investigating method is carried out using item Rock And Soil osmotic coefficient investigating device, it includes following step
Suddenly：
1) water check valve on the water inlet pipe of liquid supply box bottom is opened, the aperture of water check valve is controlled and then controls water velocity and water
Flow slowly supplies water to lucite cylinder inside, while opening temperature control system makes lucite cylinder be under steady temperature environment
It is tested；
2) water flowed out from water inlet pipe first passes around gravel layer, flows through and is oozed under ground sample to be measured, by Steel net and
Permeable gauze prevents rock mass particle from falling into lucite cylinder bottom with infiltration, while opening air bleeding valve and being arranged by exhaust pipe
Gas；
3) it after ground sample to be measured is uniformly filled in water, is injected and is fitted to lucite cylinder bottom by fluorescer delivery device
Measure fluorescence diluent；
4) after fluorescence diluent is uniformly mixed in lucite cylinder bottom, fluorescence is opened by fluorescence detector control terminal
Subsystem is detected, closes water inlet pipe top water check valve at this time；Meanwhile in the lucite cylinder part tinfoil paper of Steel net lower part
Paper bag is wrapped up in, and the interference of ambient is prevented；
5) ultraviolet LED lamp is opened, the ultraviolet light of 365nm is launched after being powered, will dissipate point light source by concavees lens turns
It is changed to directional light, irradiates the fluorescent solutions between convex lens and concavees lens, excitation fluorescer sends out the fluorescence that wavelength is 550nm,
Source of parallel light convergence is point light source by convex lens, is radiated at narrow-band-filter on piece, is filtered other veiling glares only by the glimmering of 550nm
Light, fluorescence are radiated in photo resistance, and fluorescence intensity is converted to photoelectric current, and fluorescence detector control terminal 9 is examined by micro-current
It surveys device to be amplified faint photoelectric current, digital signal is converted electrical signals to by A/D conversion equipments；
6) after fluorescence detection subsystem all parts preheating 2min, the water check valve on water inlet is opened, liquid is opened simultaneously out
Water check valve on pipe, water by soil sample to be measured it is continuous under ooze, the agent of lucite cylinder base fluorescent is constantly diluted, and is adopted by data
Storage reads and stores record fluorescer concentration value in real time, and oozing for ground sample to be measured can be measured by carrying out data processing in terminal
Saturating flow velocity；
It is to launch controller automatically by fluorescer to push fluorescer note that fluorescer, which launches operating method, in the step 3)
Emitter enters lower cavity according to the quantitative fluorescence diluent of launching of operational order on time, by fluorescer blender by the glimmering of injection
Light diluent Quick uniform is mixed in the percolating fluid of bottom, wherein 2~3min of mixing arm stirring at low speed, is then shut off fluorescer and is stirred
Mix device.
The calculating process of the step 6) seepage velocity is：
It is directly proportional to fluorescer concentration c according to photo-current intensity I, so having：
Further according to single hole point Dilution Model, the relationship between fluorescer concentration c and seepage velocity v：
By and the relationship between percolation flow velocity v and photo-current intensity I can be obtained be：
Wherein：α be loaded filter correction factor, if loaded filter water penetration be far longer than ground sample to be measured can value be 1；r
For the radius of plexiglass cylinder；T is the fluorescer constantly dilution time used in experiment.
Advantages of the present invention is with advantageous effect：
1. fluorescence Rock And Soil seepage detector detection sensitivity is high, photoelectric cell can high discrimination capture fluorescence intensity
Change, caused fluorescence intensity change, accurate measurement precision can reach 0.0001ug/ml, therefore can be by small
Concentration variation accurately to measure Rock And Soil seepage coefficient, and measurement method and conventional seepage flow instrument are completely different.
2. fluorescer luyor-6200 used by has property stabilization, non-toxic degradable, the high spy of easy detection sensitivity
Point.Fluorescer solution concentration is very low in experiment, and volume ratio is 0.1 ‰~0.25 ‰, and fluorescer consumption is small, cheap.
Fluorescer is not limited to one kind, as long as meeting high water soluble, it is nontoxic can natural degradation, excitation wavelength differs with wavelength of fluorescence
Greatly, property stablizes these conditions, can be used in experiment detection.
3. equipment instrument is small, increasingly automated, easy to operate.
4. ultraviolet LED lamp can send out the ultraviolet light of specific 365nm, by concavees lens will dissipate point light source be converted to it is parallel
Light irradiates the fluorescent solutions between convex lens and concavees lens, and excitation fluorescer sends out the fluorescence that wavelength is 550nm, and convex lens will
Source of parallel light convergence is point light source, is radiated at narrow-band-filter on piece, filters other veiling glares only by the fluorescence of 550nm, fluorescence shines
It penetrates in photo resistance, fluorescence intensity is converted to photoelectric current, and fluorescence detector control terminal 9 is by micro-current detection device to micro-
Dim light electric current is amplified, and digital signal is converted electrical signals to by A/D conversion equipments, can be incited somebody to action by above-mentioned illumination system
Optical signal is converted into electric signal, and then detects the fluorescent liquid concentration variation inside lucite cylinder.
5. for the ease of Germicidal efficacy, Sheng sample lucite cylinder is transparent, but during the experiment, is tightly wrapped up with masking foil
Cylinder outer wall lower cavity part can interfere after fluorescence detection subsystem starts to avoid ambient.
6. electric signal can be converted optical signal by photo resistance, and then detect the variation of solution concentration, finally
Realize the measurement of infiltration coefficient.
7. after seepage stability, certain density water base fluorescer being added into bottom of cylinder, is constantly flowing through Rock And Soil
Under infiltration dilution, such small concentrations variation is captured by photoelectric current detecting system, it, can be more accurate according to conventional point Dilution Model
Measurement Rock And Soil speed of seepage flow, and then obtain the infiltration coefficient of sample.
8. experiment is found, luyor-6200 is at a certain concentration (volume ratio be 0.1 ‰~0.25 ‰), the photoelectricity that detects
Stream is directly proportional to concentration.By the way that certain density fluorescer is added into device, under the infiltration dilution for constantly flowing through Rock And Soil,
Such small concentrations variation is captured by photoelectric current detecting system, according to conventional point Dilution Model, can accurately measure ground
Body speed of seepage flow.
Description of the drawings
The invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is Rock And Soil sample infiltration coefficient measuring equipment schematic diagram provided by the invention.
Fig. 2 is fluorescence detecting system thin portion structural schematic diagram provided by the invention.
Fig. 3 is infiltration coefficient measurement system anti-filter modular construction schematic diagram provided by the invention.
Fig. 4 is fluorescence detecting system principle sketch provided by the invention.
Fig. 5 is the concentration and photoelectric current relation curve that experiment measures water base fluorescer.
In figure：Liquid supply box 1, water inlet pipe 2, water check valve 3, temperature control system 4, lucite cylinder 5, gravel layer 6, ground examination to be measured
Sample 7, Steel net 8, fluorescence detector control terminal 9, data collector 10, fluorescer delivery device 11, fluoroscopic examination subsystem
System 12, outlet tube 13, liquid holding groove 14, stirring power device 15 stir arm controller 16, and mixing arm 17, fluorescer is launched automatically
Controller 18, fluorescer syringe 19, fluorescence diluent 20, insulate wire casing 21, ultraviolet LED lamp 22, and concavees lens 23 support buttress shaft
24, convex lens 25, spike filter 26, photo resistance 27, permeable gauze 28, air bleeding valve 29, exhaust pipe 30.
Specific implementation mode
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
Embodiment 1：
As shown in Figs 1-4, a kind of Rock And Soil osmotic coefficient investigating device based on water base fluorescer dilution method, it includes supplying
The bottom of liquid case 1, liquid supply box 1 is connected with water inlet pipe 2, and water check valve 3 is equipped on water inlet pipe 2, and the underface of water inlet pipe 2 is placed with
Ground sample 7 to be measured is filled in machine glass infuser 5,5 inside of lucite cylinder, and the top layer of the ground sample 7 to be measured is equipped with gravel layer
6, bottom is equipped with permeable gauze 28 and Steel net 8；The bottom symmetrical of the lucite cylinder 5 is provided with exhaust apparatus；It is described
The bottom of machine glass infuser 5 is provided with fluorescer delivery device 11, and fluorescer delivery device 11 passes through data collector 10 and fluorescence
Survey meter control terminal 9 is connected；The fluorescer delivery device 11 is connected with fluorescence detection subsystem 12；The lucite cylinder
5 outside is provided with temperature control system 4；The bottom of the lucite cylinder 5 is provided with outlet tube 13, and the underface of outlet tube 13 is set
It is equipped with liquid holding groove 14.
Further, ground sample 7 to be measured is held by lucite cylinder 5, it is enough to rock to be measured by liquid supply box 1
Soil sample 7 carries out water injection work, and then so that ground sample 7 to be measured penetrate through fluorescer delivery device 11 can be to
A certain amount of fluorescence diluent 20 is injected in penetrating fluid provides test basis for subsequent measurement.
Further, the exhaust apparatus includes exhaust pipe 30, and air bleeding valve 29 is equipped on exhaust pipe 30.Pass through air bleeding valve
29 and exhaust pipe 30 operation can be exhausted.
Further, the fluorescer delivery device 11 launches controller 18 and fluorescer stirring automatically including fluorescer
Device；The fluorescer launches controller 18 and is connected with fluorescer syringe 19 injection volume of control fluorescence diluent 20 automatically；Institute
It includes stirring power device 15 to state fluorescer blender, and the output shaft of stirring power device 15 is equipped with stirring arm controller 16,
It stirs and mixing arm 17 is installed on the output shaft of arm controller 16.Launching controller 18 automatically by fluorescer can be to penetrating fluid
The quantitative fluorescence diluent 20 of middle injection can be such that fluorescer is adequately mixed with penetrating fluid by stirring arm controller 16.
Further, the fluorescence detection subsystem 12 includes ultraviolet LED lamp 22, and the setting of ultraviolet LED lamp 22 is thin in support
The head of column 24, inside insulation wire casing 21, the tail portion of the support buttress shaft 24 is set for the power cord setting of the ultraviolet LED lamp 22
It is equipped with photo resistance 27, the interlude inside buttress shaft 24 from its head to tail portion is supported to be sequentially installed with concavees lens 23, convex lens
25 and spike filter 26；It is machined with inlet opening on support buttress shaft 24 between the concavees lens 23 and convex lens 25, is facilitated glimmering
Light liquid enters.It is excited by the higher special wavelength light of energy according to fluorescer, it is more longer than excitation wavelength glimmering to launch wavelength
Light, and fluorescence intensity meets lambert with fluorescence agent concentration --- Beer law.According to this principle, the water base fluorescer of selection
Luyor-6200 has that property is stable, non-toxic degradable, the high feature of easy detection sensitivity, establish it is a set of can be according to fluorescer
The system of concentration real-time determining Rock And Soil seepage velocity.Experiment find, luyor-6200 concentration volume ratio be 0.1 ‰~
When 0.25 ‰, the photoelectric current detected is directly proportional to concentration.By the way that certain density fluorescer is added into device, do not stopping
Under infiltration dilution through Rock And Soil, such small concentrations variation is captured by photoelectric current detecting system, it, can according to conventional point Dilution Model
Accurately to measure Rock And Soil speed of seepage flow.
Further, the temperature control system 4 includes temperature sensor, compressor and heat-transfer pipe, and the temperature sensor is adopted
With Pt100 platinum resistance for detecting temperature；The compressor and heat-transfer pipe are for being adjusted temperature control the temperature inside the box；The temperature
Degree sensor is connected with main control chip, and the main control chip uses microcontroller STM32；The main control chip is communicated by RS232
The communication of protocol realization slave computer and computer, the Pt100 platinum resistance and XTR105 combinations are converted into stable analog signal
Amount, the analog signal amount will be changed into digital quantity input main control chip by AD7705, and main control chip is just obtained by calculating
The value of Current Temperatures；Main control chip passes through pid algorithm, calculates and needs output current size, writes in MAX538 chips,
MAX538 chips convert digital quantity to analog input XTR110, to obtain stable electric current output, control compressor and
Heat-transfer pipe reaches and adjusts experimental temperature purpose.Percolation flow velocity of the water in soil is related with the density of water and viscosity, and the two
Numerical value is again related in temperature.The coefficient of dynamic viscosity η of water is different under condition of different temperatures, and the variable density of water is smaller to be can be ignored not
Meter.Experimental temperature is adjusted by temperature control subsystem 4, test accuracy can be improved.
Further, the fluorescence diluent 20 uses water base fluorescer luyor-6200 is stable, nontoxic with property can
Degradation, the high feature of easy detection sensitivity.Fluorescer solution concentration is very low in experiment, and fluorescer consumption is small, cheap.It is glimmering
Photo etching is not limited to one kind, as long as meeting high water soluble, it is nontoxic can natural degradation, excitation wavelength differs greatly with wavelength of fluorescence,
Property stablizes these conditions, can be used in experiment detection.
Embodiment 2：
Referring to Fig. 4, Rock And Soil osmotic coefficient investigating method is carried out using item Rock And Soil osmotic coefficient investigating device, it includes
Following steps：
1) water check valve 3 on 1 bottom water inlet pipe 2 of liquid supply box is opened, the aperture of water check valve 3 is controlled and then controls water velocity
And water flow, it slowly supplies water to 5 inside of lucite cylinder, while opening temperature control system 4 makes lucite cylinder 5 be in steady temperature
It is tested under environment；
2) water flowed out from water inlet pipe 2 first passes around gravel layer 6, flows through and is oozed under ground sample 7 to be measured, passes through Steel net
8 and permeable gauze 28 prevent rock mass particle from falling into 5 bottom of lucite cylinder with infiltration, while opening air bleeding valve 29 and passing through exhaust pipe
30 are exhausted；
3) it after ground sample 7 to be measured is uniformly filled in water, is noted to 5 bottom of lucite cylinder by fluorescer delivery device 11
Enter appropriate fluorescence diluent 20；
4) it after fluorescence diluent 20 is uniformly mixed in 5 bottom of lucite cylinder, is opened by fluorescence detector control terminal 9
Fluorescence detection subsystem 12 closes 2 top water check valve 3 of water inlet pipe at this time；Meanwhile in the lucite cylinder 5 of 8 lower part of Steel net
Part is wrapped up with masking foil, prevents the interference of ambient；
5) ultraviolet LED lamp 22 is opened, the ultraviolet light of 365nm is launched after being powered, by concavees lens 23 by divergence point light
Source is converted to directional light, irradiates the fluorescent solutions between convex lens 25 and concavees lens 23, it is 550nm that excitation fluorescer, which sends out wavelength,
Fluorescence, convex lens 25 by source of parallel light convergence be point light source, be radiated on spike filter 26, filter other veiling glares and only pass through
The fluorescence of 550nm, fluorescence are radiated in photo resistance 27, and fluorescence intensity is converted to photoelectric current, and fluorescence detector control terminal 9 is logical
It crosses micro-current detection device to be amplified faint photoelectric current, digital signal is converted electrical signals to by A/D conversion equipments；
6) after 12 all parts of fluorescence detection subsystem preheating 2min, the water check valve 3 on water inlet is opened, is opened simultaneously out
Water check valve 3 in liquid pipe 13, water by soil sample to be measured it is continuous under ooze, 5 base fluorescent agent of lucite cylinder is constantly diluted, and is passed through
Data collector reads and stores record fluorescer concentration value in real time, and ground examination to be measured can be measured by carrying out data processing in terminal
The seepage velocity of sample；
It is to launch controller 18 automatically by fluorescer to push fluorescer that fluorescer, which launches operating method, in the step 3)
Syringe 19 enters lower cavity according to the quantitative fluorescence diluent 20 of launching of operational order on time, will be noted by fluorescer blender
20 Quick uniform of fluorescence diluent penetrated is mixed in the percolating fluid of bottom, wherein 17 2~3min of stirring at low speed of mixing arm, is then closed
Close fluorescer blender.
Embodiment 3：
Such as Fig. 5, the fluorescence agent concentration for measuring luyor-6200 is tested with photoelectric current relation curve as shown, seepage velocity
Calculating process be：
It is directly proportional to fluorescer concentration c according to photo-current intensity I, so having：
Further according to single hole point Dilution Model, the relationship between fluorescer concentration c and seepage velocity v：
Can obtain the relationship between percolation flow velocity v and photo-current intensity I by (1) and (2) is：
Wherein：α be loaded filter correction factor, if loaded filter water penetration be far longer than ground sample to be measured can value be 1；r
For the radius of plexiglass cylinder；T is the fluorescer constantly dilution time used in experiment.
Above-described embodiment is used for illustrating the present invention, rather than limits the invention, the present invention spirit and
In scope of the claims, to any modifications and changes that the present invention makes, protection scope of the present invention is both fallen within.
Claims (3)
1. the method for carrying out Rock And Soil osmotic coefficient investigating using Rock And Soil osmotic coefficient investigating device, which is characterized in that it is wrapped
Include following steps：
1) water check valve (3) on liquid supply box (1) bottom water inlet pipe (2) is opened, the aperture of control water check valve (3) controls flow in turn
Speed and water flow slowly supply water, while opening temperature control system (4) to make at lucite cylinder (5) to lucite cylinder (5) is internal
It is tested under steady temperature environment；
2) water flowed out from water inlet pipe (2) first passes around gravel layer (6), flows through and is oozed under ground sample (7) to be measured, passes through permeable yarn
Net (28) and Steel net (8) prevent rock mass particle from falling into lucite cylinder (5) bottom with infiltration, while opening air bleeding valve (29)
It is exhausted by exhaust pipe (30)；
3) after ground sample (7) to be measured is uniformly filled in water, by fluorescer delivery device (11) to lucite cylinder (5) bottom
Inject appropriate fluorescence diluent (20)；
4) it after fluorescence diluent (20) is uniformly mixed in lucite cylinder (5) bottom, is beaten by fluorescence detector control terminal (9)
Fluorescence detection subsystem (12) is opened, closes water inlet pipe (2) top water check valve (3) at this time；Meanwhile by Steel net (8) lower part
Lucite cylinder (5) is partly wrapped up with masking foil, and the interference of ambient is prevented；
5) ultraviolet LED lamp (22) is opened, the ultraviolet light of 365nm is launched after being powered, by concavees lens (23) by divergence point light
Source is converted to directional light, the fluorescent solutions between irradiation convex lens (25) and concavees lens (23), and excitation fluorescer sends out wavelength and is
Source of parallel light convergence is point light source by the fluorescence of 550nm, convex lens (25), is radiated on spike filter (26), filtering is other
Veiling glare is only by the fluorescence of 550nm, and fluorescence is radiated in photo resistance (27), and fluorescence intensity is converted to photoelectric current, fluorescence detection
Instrument control terminal (9) is amplified faint photoelectric current by micro-current detection device, is turned electric signal by A/D conversion equipments
It is changed to digital signal；
6) after fluorescence detection subsystem (12) all parts preheating 2min, the water check valve (3) on water inlet is opened, is opened simultaneously out
Water check valve (3) in liquid pipe (13), water by soil sample to be measured it is continuous under ooze, lucite cylinder (5) base fluorescent agent by constantly it is dilute
It releases, reads and store record fluorescer concentration value in real time by data collector, can measure and wait in terminal progress data processing
Survey the seepage velocity of ground sample；
The Rock And Soil osmotic coefficient investigating device, it includes liquid supply box (1), and the bottom of liquid supply box (1) is connected with water inlet pipe
(2), water check valve (3) is installed, lucite cylinder (5), lucite cylinder are placed in the underface of water inlet pipe (2) on water inlet pipe (2)
(5) internal to fill ground sample (7) to be measured, the top layer of the ground sample (7) to be measured is equipped with gravel layer (6), and bottom is equipped with saturating
Water gauze (28) and Steel net (8)；The bottom symmetrical of the lucite cylinder (5) is provided with exhaust apparatus；The machine glass
The bottom of cylinder (5) is provided with fluorescer delivery device (11), fluorescer delivery device (11) by data collector (10) with it is glimmering
Optical detection instrument control terminal (9) is connected；The fluorescer delivery device (11) is connected with fluorescence detection subsystem (12)；It is described to have
The outside of machine glass infuser (5) is provided with temperature control system (4)；The bottom of the lucite cylinder (5) is provided with outlet tube (13), goes out
Liquid holding groove (14) is provided with immediately below liquid pipe (13)；
The exhaust apparatus includes exhaust pipe (30), and air bleeding valve (29) is equipped on exhaust pipe (30)；
The fluorescer delivery device (11) includes that fluorescer launches controller (18) and fluorescer blender automatically；The fluorescence
Agent launch automatically controller (18) be connected with fluorescer syringe (19) control fluorescence diluent (20) injection volume；The fluorescence
Agent blender includes stirring power device (15), and the output shaft of stirring power device (15) is equipped with stirring arm controller (16),
Mixing arm (17) is installed on the output shaft of stirring arm controller (16)；
The fluorescence detection subsystem (12) includes ultraviolet LED lamp (22), and ultraviolet LED lamp (22) setting is in support buttress shaft (24)
The power cord setting on head, the ultraviolet LED lamp (22) is internal in insulation wire casing (21), and the tail portion of the support buttress shaft (24) is set
Be equipped with photo resistance (27), the internal interlude from its head to tail portion of support buttress shaft (24) be sequentially installed with concavees lens (23),
Convex lens (25) and spike filter (26)；It is processed on support buttress shaft (24) between the concavees lens (23) and convex lens (25)
There is inlet opening, fluorescent liquid is facilitated to enter；
The temperature control system (4) includes temperature sensor, compressor and heat-transfer pipe, and the temperature sensor is using Pt100 platinum electricity
Resistance is for detecting temperature；The compressor and heat-transfer pipe are for being adjusted temperature control the temperature inside the box；The temperature sensor with
Main control chip is connected, and the main control chip uses microcontroller STM32；Under the main control chip is realized by RS232 communication protocols
The communication of position machine and computer, the Pt100 platinum resistance and XTR105 combinations convert temperature variable to stable analog signal
Amount；The analog signal amount will be changed into digital quantity input main control chip by AD7705, and main control chip is just obtained by calculating
The value of Current Temperatures；Main control chip passes through pid algorithm, calculates and needs output current size, writes in MAX538 chips,
MAX538 chips convert digital quantity to analog input XTR110, to obtain stable electric current output, control compressor and
Heat-transfer pipe reaches and adjusts experimental temperature purpose；
The fluorescence diluent (20) uses water base fluorescer luyor-6200, stable, non-toxic degradable, Yi Jian with property
The characteristics of surveying high sensitivity.
2. the side according to claim 1 for carrying out Rock And Soil osmotic coefficient investigating using Rock And Soil osmotic coefficient investigating device
Method, it is characterised in that：It is to launch controller (18) automatically by fluorescer to push away that fluorescer, which launches operating method, in the step 3)
Dynamic fluorescer syringe (19) enters lower cavity according to the quantitative fluorescence diluent (20) of launching of operational order on time, passes through fluorescence
Fluorescence diluent (20) Quick uniform of injection is mixed in the percolating fluid of bottom by agent blender, and wherein mixing arm (17) low speed stirs
2~3min is mixed, fluorescer blender is then shut off.
3. the side according to claim 1 for carrying out Rock And Soil osmotic coefficient investigating using Rock And Soil osmotic coefficient investigating device
Method, it is characterised in that：The calculating process of the step 6) seepage velocity is：
It is directly proportional to fluorescer concentration c according to photo-current intensity I, so having：
Further according to single hole point Dilution Model, the relationship between fluorescer concentration c and seepage velocity v：
Can obtain the relationship between percolation flow velocity v and photo-current intensity I by (1) and (2) is：
Wherein：α be loaded filter correction factor, if loaded filter water penetration be far longer than ground sample to be measured can value be 1；R is to have
The radius of machine glass cylinder；T is the fluorescer constantly dilution time used in experiment；I0For the initial value of photo-current intensity；C0It is glimmering
The initial value of photo etching concentration.
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