CN101526515A - Method and device for measuring disseminated parameter of solute migration - Google Patents
Method and device for measuring disseminated parameter of solute migration Download PDFInfo
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- CN101526515A CN101526515A CN200910026152A CN200910026152A CN101526515A CN 101526515 A CN101526515 A CN 101526515A CN 200910026152 A CN200910026152 A CN 200910026152A CN 200910026152 A CN200910026152 A CN 200910026152A CN 101526515 A CN101526515 A CN 101526515A
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Abstract
The invention relates to a method and a device for measuring a disseminated parameter of solute migration. In the method, more than two detecting probes used for reflecting the concentration change of a tracer which is arranged at the upper course of a seepage flow are embedded into the middle of an earth mass sample which generates a one-dimension seepage flow at intervals, and then the corresponding concentration of the tracer is obtained by utilizing the relation between data detected by the tracer and the concentration of the tracer so as to obtain more than two groups of concentration-time change curves under the condition of a same experiment, i.e. the disseminated parameter of the solute migration during a whole one-dimension seepage flow process can be obtained, thus, compared with a prior one-dimension sand column experiment, the invention not only enhances the experiment efficiency, but also effectively avoids the size effect of the one-dimension sand column experiment.
Description
Technical field
What the present invention relates to is organic or inorganic solute dispersivity measuring method and measurement mechanism in the one-dimensional migration process in the soil body, belongs to solute dispersion measuring method and measurement mechanism device technical field.
Background technology
In the prior art, the indoor measuring method of dispersivity parameter commonly used is determined by the experiment of one dimension sand post, this one dimension sand post experiment concrete operations flow process is as follows: at first soil body sample is loaded in the pipeline, then different heads is set respectively at the two ends of pipeline, under the effect of head difference, produce seepage flow, after seepage stability, end in piping applies certain density solution, measure the concentration that flows out solution every the regular hour at the other end of piping simultaneously, the dispersity of the curved line relation derivation solute by concentration changes with time, know thus, when utilizing this method to measure the dispersity of solute, experiment for the first time can only obtain a concentration time curve, and efficient is not high, and can't measure the size effect of dispersivity; In addition, the method that the general using hand sampling is measured when carrying out the solution concentration measurement, workload is bigger, and can make the measurement result precision not high because of human factor.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, a kind of disseminated parameter of solute migration method is provided, it is by burying plural probe underground to feed back the variation of different loci tracer concentration in the solute transfer process respectively in soil body sample, thereby calculate the dispersivity parameter according to the relation between concentration change and the dispersivity parameter, so, the present invention can be under same experiment condition, a plurality of sites are provided with probe respectively to obtain the concentration time curve of corresponding site in soil body sample, thereby can not only improve the efficiency and precision of measurement, can also reflect the size effect of dispersivity.
For realizing above technical purpose, the present invention will take following technical scheme:
A kind of disseminated parameter of solute migration method may further comprise the steps: (1) prepares soil body sample, soil body sample is placed in the sample groove, and soil body sample is applied certain head difference to form one dimensional fluid flow; (2) throw in tracer agent in soil body sample seepage flow upstream; (3) interval is buried in the soil body sample establishes plural detection probe to feed back the tracer concentration variation of corresponding site in the solute transfer process respectively; (4) collect above-mentioned detection probe institute feedback data, obtain the concentration-time changing curve of each corresponding site of popping one's head in according to this feedback data and the relation of tracer concentration; (5) according to the relation of concentration-time changing curve and dispersivity parameter, calculate the dispersivity parameter.
Automatically collect detection probe institute feedback data with data collector, and be entered into the computer data APU, this computer data APU is exported the concentration-time changing curve of each corresponding site of popping one's head in respectively according to the relation of surveying probe feedback data and tracer concentration.
Described tracer agent is that the KCl analysis is pure.
Described probe is the conductance measurement probe, and it leads the concentration of determining tracer agent KCl in the solute transfer process with the relation of KCl solution concentration by measuring the electric conductivity value of tracer agent KCl solution in the solute transfer process according to electricity.
The conductance measurement probe of burying underground in the described soil body sample is 3.
According to above technical scheme, can realize following beneficial effect:
1. the present invention is by burying plural detection probe underground in carrying out the soil body sample of one dimensional fluid flow, thereby can in the soil body sample under the same experiment condition, obtain the data of corresponding site more than two groups, therefore, greatly improved conventional efficient on the one hand, on the other hand can be by a plurality of detection probes being set to obtain multi-group data, improve dispersivity CALCULATION OF PARAMETERS precision, and the size effect that overcomes present one dimension sand column test effectively;
2. the present invention adopts data collector to collect automatically and surveys probe institute feedback data, and with these data input computer data APUs with the output concentration time curve, greatly save artificial image data and carried out the human cost that corresponding data analysis utilized, guarantee the degree of accuracy of data acquisition and data analysis simultaneously, avoided the personal error that is produced in the manually-operated process effectively.
Another technical purpose of the present invention provides a kind of dispersivity parameter measuring apparatus of realizing above-mentioned disseminated parameter of solute migration method, it comprise the sample case that is used for splendid attire soil body sample and be connected with sample case both sides respectively have head difference so that soil body sample forms the inlet water tank and the discharge casing of one dimensional fluid flow, and soil body sample seepage flow upstream is provided with tracer agent, and inlet water tank is connected with a water storage tank by water inlet pipe, it is characterized in that: be provided with more than two in the described sample case, be used for feeding back the detection probe of tracer concentration at one dimensional fluid flow process delta data.
Described sample groove opening end is provided with water-resisting layer.
The output terminal of described detection probe is connected with the data collector input end, and the output terminal of this data collector then is connected according to surveying the computer data APU of probe feedback data with the relation output concentration time curve of tracer agent solution concentration with one.
Be provided with between described inlet water tank and the water storage tank and keep the constant water circle device of inlet water tank head, described water circle device comprise be arranged on the water inlet pipe, input end is connected with water storage tank and water pump that output terminal is connected with inlet water tank and a water inlet balance pipe that directly inlet water tank is connected with water storage tank, and the head of this water inlet balance pipe and inlet water tank connection site is higher than the head of discharge casing.
The link of described sample case and inlet water tank and/or the link of sample case and discharge casing are by forming every the sand porous disc.
According to above technical scheme, measurement mechanism provided by the present invention as can be known has following beneficial effect:
1. this device is by being provided with plural detection probe in soil body sample, thereby can realize the technical scheme that test method of the present invention is taked, when promptly using this device to carry out disseminated parameter, can feed back the data of different loci under same experiment condition in the soil body sample respectively, thereby can obtain the feedback data of respective number according to the number of set detection probe, promptly obtain the tracer concentration-time curve of respective number, then greatly improved conventional efficient on the one hand, on the other hand can be by a plurality of detection probes being set to obtain multi-group data, improve dispersivity CALCULATION OF PARAMETERS precision, and the size effect that overcomes present one dimension sand column test effectively;
2. this device is provided with data collector and computer data APU, then surveying probe institute feedback data can collect automatically by this data collector, and with these data input computer data APUs with the output concentration time curve, greatly save artificial image data and carried out the human cost that corresponding data analysis utilized, guarantee the degree of accuracy of data acquisition and data analysis simultaneously, avoided the personal error that is produced in the manually-operated process effectively;
3. set water circle device between inlet water tank and the water storage tank, can not only determine the head height of inlet water tank exactly, and the head that can keep inlet water tank is a steady state value, know thus, the utility model can be kept the constant of one dimensional fluid flow head difference effectively, the experiment condition that has promptly guaranteed to utilize the utility model to carry out the dispersivity parameter measurement stable; In addition, the head of the mouth of pipe Level Change discharge casing by mobile drainpipe is to realize that soil body sample is applied the different head difference that one dimensional fluid flow can take place, promptly control the speed of solute transfer easily, if allow the water side head equate, then can measure the free coefficient of diffusion of solute with the water intake end head.
Description of drawings
Fig. 1 is the schematic diagram of disseminated parameter of solute migration method of the present invention;
Fig. 2 is the structural representation of dispersivity parameter measuring apparatus of the present invention;
Fig. 3 is in utilization first kind of soil body sample simulation one dimensional fluid flow process that assay method and measurement mechanism of the present invention obtained, the relative concentration-time changing curve of three different loci in the soil body sample;
Fig. 4 is in utilization second kind of soil body sample simulation one dimensional fluid flow process that assay method and measurement mechanism of the present invention obtained, the relative concentration-time changing curve of three different loci in the soil body sample;
Fig. 5 is that utilization first kind of soil body sample that assay method and measurement mechanism of the present invention obtained simulated in the free diffusion process, the relative concentration-time changing curve of three different loci in the soil body sample.
Embodiment
Explain technical scheme of the present invention below with reference to accompanying drawing.
As shown in Figure 1, disseminated parameter of solute migration method of the present invention specifically may further comprise the steps: (1) prepares soil body sample, and certain head difference is set in soil body sample both sides to form one dimensional fluid flow, the present invention produces suitable seepage flow head difference with water circulation system with maintenance, specifically, this water circulation system realizes in the following manner: utilize water pump that the water in the water storage tank is constantly injected inlet water tank, be higher than default head water by the water inlet balance pipe enter water tank, the experiment water circulation; (2) throw in tracer agent in soil body sample seepage flow upstream, tracer agent of the present invention is that the KCl analysis is pure; (3) interval is buried in the soil body sample establishes plural detection probe to feed back the tracer concentration variation of corresponding site in the solute transfer process respectively, the used probe of the present invention is the conductance measurement probe, and the conductance measurement probe that is embedded in the soil body sample is 3, it leads the concentration change of determining tracer agent KCl in the solute transfer process with the relation of KCl solution concentration by measuring the pop one's head in electric conductivity value of solution of corresponding site of conductance measurement in the solute transfer process according to electricity; (4) with collecting the tracer concentration that above-mentioned probe fed back between data collector at regular intervals automatically, and be entered into computer system, lead-relation of concentration according to the tracer agent electricity, derive each electricity and lead corresponding concentration value, thereby obtain the concentration-time changing curve of each corresponding site of popping one's head in; (5) according to the relation of concentration-time changing curve and dispersivity parameter, calculate the dispersivity parameter.
For realizing above-mentioned disseminated parameter method, the present invention also provides a kind of dispersivity parameter measuring apparatus, as shown in Figure 2, solute transfer dispersivity parameter measuring apparatus of the present invention, comprise the sample groove l that is used for splendid attire soil body sample and be connected with sample groove 1 both sides respectively have suitable head difference so that soil body sample forms the inlet water tank 14 and the discharge casing 3 of one dimensional fluid flow, described sample groove opening end is provided with water-resisting layer 8, this water-resisting layer 8 can prevent water evaporates, guaranteeing that soil body sample is in the one dimension dimension all the time in the measuring process oozes, and at soil body sample seepage flow upstream input tracer agent, this tracer agent is that the KCl analysis is pure, described inlet water tank 14 is connected with water storage tank 12 by water inlet pipe 10,3 of discharge casings are connected with drainpipe 4, and the link 9 of described sample groove 1 and inlet water tank 14 and the link 7 of sample groove 1 and discharge casing 3 are all by constituting every the sand porous disc, in addition, the compartment of terrain is embedded with the plural detection probe 2 that one dimensional fluid flow process tracer concentration changes that is used for feeding back in the described soil body sample, the present invention is three different loci A in soil body sample, B, C has buried underground respectively and has surveyed probe 2, therefore, under each head difference, can obtain three groups of feedback data of surveying the corresponding site of probe 2 detections, and according to the relation of this feedback data and tracer concentration, can obtain in the one dimensional fluid flow process, three groups of tracer concentration-time changing curves, according to the relation of this concentration-time changing curve and dispersivity parameter, obtain the dispersivity parameter of solute transfer process again.
The output terminal of detection probe 2 of the present invention is connected with data collector 5 input ends, the output terminal of this data collector 5 then is connected with the relation of tracer agent solution concentration, the computer data APU 6 of output concentration-time changing curve according to surveying 2 feedback data of popping one's head in one, and detection probe 2 of the present invention is the conductance measurement probe, and then computer data APU 6 is led and the exportable tracer concentration-time changing curve of the relation of tracer concentration according to the electricity of this conductance measurement probe detection.Therefore, survey probe 2 feedback data by data collector 5 and 6 pairs of computer data APUs and gather storage and analyzing and processing, the generation of greatly having saved human cost and having avoided mistake effectively.
In addition, be provided with between described inlet water tank 14 and the water storage tank 12 and keep the constant water circle device of inlet water tank 14 heads, this water circle device comprise be arranged on the water inlet pipe 10, input end is connected with water storage tank 12 and water pump 11 that output terminal is connected with inlet water tank 14 and a water inlet balance pipe 13 that directly inlet water tank 14 is connected with water storage tank 12, and the head of this water inlet balance pipe 13 and inlet water tank 14 connection site is higher than the head of discharge casing 3.During use, water pump 11 pumps into inlet water tank 14 with the current in the water storage tank 12, and when its head is higher than the default head of inlet water tank 14, the current in the inlet water tank 14 will enter water storage tank 12 through water inlet balance pipe 13, thereby assurance inlet water tank 14 heads are constant; Used drainpipe 4, water inlet pipe 10 and the water inlet balance pipe 13 of the present invention is all flexible pipe, then when the head difference between change inlet water tank 14 and the discharge casing 3, only need debugging drainpipe 4 height can realize reducing or increasing discharge casing 3 heads, thereby can regulate the head difference between inlet water tank 14 and the discharge casing 3 easily.
Fig. 3 is in utilization first kind of soil body sample simulation one dimensional fluid flow process that assay method and measurement mechanism of the present invention obtained, three different loci A in the soil body sample, B, relative concentration-time changing curve that the C place is corresponding, its course of work is earlier soil body sample to be closed with clear water is full, add certain density solution at water storage tank 12 and inlet water tank 14 then, suitable head difference is set to allow soil body sample generation one dimensional fluid flow, turn-on data harvester 5 carries out data recording and storage, and this data collector 5 writes down one group of conductance measurement probe feedback data every the regular hour, and with these data input computer data APUs 6, its electricity according to solution leads-and concentration relationship changes into the electric conductivity value that obtains the concentration value of solution, and the concentration of concentration value divided by solution in the inlet water tank 14, obtain the relative concentration value, then relative concentration-the time changing curve of output tracking agent solution.
Fig. 4 is in utilization second kind of soil body sample simulation one dimensional fluid flow process that assay method and measurement mechanism of the present invention obtained, three different loci A in this soil body sample, B, relative concentration-time changing curve that the C place is corresponding, its course of work be at sample fully by solution saturated after, add clear water at water storage tank 12 and inlet water tank 14, suitable head difference is set, turn-on data harvester 5 carries out data recording and storage, and this data collector 5 writes down one group of conductance measurement probe feedback data every the regular hour, and with these data input computer data APUs 6, its electricity according to solution leads-and concentration relationship changes into the electric conductivity value that obtains the concentration value of solution, and the concentration of concentration value divided by solution in the inlet water tank 14, obtain the relative concentration value, then relative concentration-the time changing curve of output tracking agent solution.
Fig. 5 is that utilization first kind of soil body sample that assay method and measurement mechanism of the present invention obtained simulated in the free diffusion process, three different loci A in the soil body sample, B, relative concentration-time changing curve that the C place is corresponding, its course of work is earlier sample to be added that clear water is full to be closed, in water storage tank 12 and inlet water tank 14, add certain density solution then, and the head of inlet water tank 14 and discharge casing is arranged to identical value, turn-on data harvester 5 carries out data recording and storage, and this data collector 5 writes down one group of conductance measurement probe feedback data every the regular hour, then with these data input computer data APUs 6, its electricity according to solution leads-and concentration relationship changes into the electric conductivity value that obtains the concentration value of solution, and the concentration of concentration value divided by solution in the inlet water tank 14, obtain the relative concentration value, then relative concentration-the time changing curve of output tracking agent solution.
Claims (10)
1. disseminated parameter of solute migration method is characterized in that:
(1) prepares soil body sample, soil body sample is placed in the sample groove, and soil body sample is applied certain head difference to form one dimensional fluid flow;
(2) throw in tracer agent in soil body sample seepage flow upstream;
(3) interval is buried in the soil body sample establishes plural detection probe to feed back the tracer concentration variation of corresponding site in the solute transfer process respectively;
(4) collect above-mentioned detection probe institute feedback data, obtain the concentration-time changing curve of each corresponding site of popping one's head in according to this feedback data and the relation of tracer concentration;
(5) according to the relation of concentration-time changing curve and dispersivity parameter, calculate the dispersivity parameter.
2. disseminated parameter method according to claim 1, it is characterized in that: collect automatically with data collector and survey probe institute feedback data, and be entered into the computer data APU, this computer data APU is exported the concentration-time changing curve of each corresponding site of popping one's head in respectively according to the relation of surveying probe feedback data and tracer concentration.
3. disseminated parameter method according to claim 2 is characterized in that: described tracer agent is that the KCl analysis is pure.
4. disseminated parameter method according to claim 3, it is characterized in that: described probe is the conductance measurement probe, it leads the concentration of determining tracer agent KCl in the solute transfer process with the relation of KCl solution concentration by measuring the electric conductivity value of tracer agent KCl solution in the solute transfer process according to electricity.
5. disseminated parameter method according to claim 4 is characterized in that: the conductance measurement probe of burying underground in the described soil body sample is 3.
6. dispersivity parameter measuring apparatus of implementing the described disseminated parameter of solute migration method of claim 1, comprise the sample case that is used for splendid attire soil body sample and be connected with sample case both sides respectively have head difference so that soil body sample forms the inlet water tank and the discharge casing of one dimensional fluid flow, and soil body sample seepage flow upstream is provided with tracer agent, and inlet water tank is connected with a water storage tank by water inlet pipe, it is characterized in that: be provided with more than two in the described sample case, be used for feeding back the detection probe of tracer concentration at one dimensional fluid flow process delta data.
7. measurement mechanism according to claim 6 is characterized in that, described sample groove opening end is provided with water-resisting layer.
8. according to claim 6 or 7 described measurement mechanisms, it is characterized in that, the output terminal of described detection probe is connected with the data collector input end, and the output terminal of this data collector then is connected according to surveying the computer data APU of probe feedback data with the relation output concentration time curve of tracer agent solution concentration with one.
9. measurement mechanism according to claim 8, it is characterized in that, be provided with between described inlet water tank and the water storage tank and keep the constant water circle device of inlet water tank head, described water circle device comprise be arranged on the water inlet pipe, input end is connected with water storage tank and water pump that output terminal is connected with inlet water tank and a water inlet balance pipe that directly inlet water tank is connected with water storage tank, and the head of this water inlet balance pipe and inlet water tank connection site is higher than the head of discharge casing.
10. measurement mechanism according to claim 9 is characterized in that, the link of described sample case and inlet water tank and/or the link of sample case and discharge casing are by forming every the sand porous disc.
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| US5284588A (en) * | 1992-01-08 | 1994-02-08 | Trustees Of Boston University | Method and system for allowing increased migration across a lipid bilayer |
| CN201378163Y (en) * | 2009-04-02 | 2010-01-06 | 河海大学 | Instrument for measuring solute transport diffusibity parameters |
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| CN102353615B (en) * | 2011-06-13 | 2013-04-17 | 东北石油大学 | Measuring apparatus and measuring method for dispersivity of piled granular substances |
| CN102353615A (en) * | 2011-06-13 | 2012-02-15 | 东北石油大学 | Measuring apparatus and measuring method for dispersivity of piled granular substances |
| CN103197039A (en) * | 2013-03-15 | 2013-07-10 | 陈秋阳 | Field underground water dispersion test method in artificial flow field |
| CN107179263A (en) * | 2017-05-26 | 2017-09-19 | 南京大学 | Puddle influences on Contaminants Transport in a kind of simulation pipeline device and method of work |
| CN107699481A (en) * | 2017-09-26 | 2018-02-16 | 河海大学 | The devices and methods therefor of hydrolysis of urea bacterium overall process activity is determined in a kind of microorganism cure test |
| CN107699481B (en) * | 2017-09-26 | 2023-11-07 | 河海大学 | Device and method for measuring overall process activity of urea-hydrolyzing bacteria in microbial solidification experiment |
| CN108387485B (en) * | 2018-03-29 | 2023-09-22 | 安徽理工大学 | Experimental device for determining diffusion coefficient of solute molecules based on layered porous medium |
| CN108387485A (en) * | 2018-03-29 | 2018-08-10 | 安徽理工大学 | Solute molecule diffusion coefficients experimental provision based on layering porous media |
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| CN109917103B (en) * | 2019-03-13 | 2021-09-07 | 中国地质科学院水文地质环境地质研究所 | In-situ soil column irrigation leaching test and solute migration quantitative description method |
| CN109917103A (en) * | 2019-03-13 | 2019-06-21 | 中国地质科学院水文地质环境地质研究所 | It is a kind of original position earth pillar irrigate leaching test and solute migration quantitative description |
| CN113758645A (en) * | 2021-08-02 | 2021-12-07 | 重庆交通大学 | Dam leakage inlet detection device and detection method thereof |
| CN113758645B (en) * | 2021-08-02 | 2024-06-07 | 重庆交通大学 | Dyke leakage inlet detection device and detection method thereof |
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