CN107462684A - The test method of interflow water age parsing based on tracer technique - Google Patents
The test method of interflow water age parsing based on tracer technique Download PDFInfo
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- CN107462684A CN107462684A CN201710588991.3A CN201710588991A CN107462684A CN 107462684 A CN107462684 A CN 107462684A CN 201710588991 A CN201710588991 A CN 201710588991A CN 107462684 A CN107462684 A CN 107462684A
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Abstract
The present invention discloses a kind of test method of the interflow water age parsing based on tracer technique, including step：1) from sampling position, collection undisturbed soil sample makes experiment soil column；2) take 3 kinds of tracers to be separately added into water, and solution is made；3) the first reactor solution is entered to be seeped into the form of rain making in the experiment soil column, the soil water is fed with simulated precipitation Water log infiltration, second of reactor solution is risen into the supply soil water by hollow billet, until the soil water in the experiment soil column reaches saturation state；4) the third reactor solution is entered to be seeped into equally in the form of rain making in the experiment soil column, and in the different height and bottom collection water sample of the experiment soil column, until no longer containing the first tracer and second of tracer in water sample, the volume used in the third reactor solution is recorded；5) according to the average annual precipitation of collecting soil sample point, the water age of such a soil interflow is calculated.
Description
Technical field
The present invention relates to a kind of test method of the interflow water age parsing based on tracer technique.
Background technology
Interflow is the current flowed in soil along different pervious soil bed boundarys, and it is the important composition portion of runoff
Point, watershed Runoff adjustment, water conservation, silt migration, nutrient loss and River Basin Hydrology cycle calculations all have very heavy
The effect wanted.Soil moisture is complicated by the collective effects such as rainfall infiltration, irrigation, evaporation, the recharge of ground water, change.
Using tracer can preferably dust trajectory of the tracer moisture in soil, to the dust trajectory and fortune of interflow
Move speed and carry out tracer study, while the migration that this method can be on the premise of not disturbed soil to moisture carries out tracer.
It is under rainfall or irrigation conditions to infiltrate, and moisture passes through the horizontal or vertical process into soil of soil surface.Ground
Lower water supply is the process that underground water enters soil in soil layer bottom along soil capillary.
Before rain on the one hand influence of the soil moisture content to interflow shows in the influence to Infiltration speed there is research
Show, infiltration rate and the soil moisture content of moisture are inversely proportional, while the more big then hillside fields interflow production stream of soil moisture content before rain
The time of beginning substantially shifts to an earlier date.And influence of the soil moisture content to interflow another aspect shows the benefit for interflow before rain
To upper, for identical rainfall, the more big then interflow runoff yield of soil moisture content is bigger before rain, native before of a relatively high rain
Earth water content is one of essential condition caused by interflow.
Production stream source to interflow finds that source can be divided into Xin Shui and Jiu Shui when studying, new water is a rainfall
The moisture supplemented in runoff event, and old water is then to be stored in soil before rainfall or the moisture of earth's surface.Xin Shui and old water pair
Had nothing in common with each other in the arbitrary way of runoff, such as after rainfall falls on earth's surface, the moisture that runoff receives rainfall supplement initially forms,
And after rain infiltration is into soil, the moisture (i.e. old water) being stored in before rainfall in soil can be come out by displacement, be dissolved into
In this rainfall-runoff process in caused interflow, interflow is formed, and then produces the result of new and old water mixing.
The content of the invention
It is an object of the invention to provide a kind of test method of the interflow water age parsing based on tracer technique, pass through simulation
Precipitation infiltration recharge rises the process of the supply soil water with underground water hollow billet, and the soil water is by complete displacement before further deriving rain
Go out unexpected required time, it calculates that resultant error is small and easy to operation.
In order to solve the above technical problems, the present invention provides a kind of experiment side of the interflow water age parsing based on tracer technique
Method, it is characterised in that including step：
1) from sampling position, collection undisturbed soil sample makes experiment soil column；
2) take 3 kinds of tracers to be separately added into water, and solution is made；
3) the first reactor solution is entered to be seeped into the form of rain making in the experiment soil column, to simulate drop
Water Water log infiltration feeds the soil water, second of reactor solution is risen into the supply soil water by hollow billet, until the experiment is former
The soil water in shape earth pillar reaches saturation state；
4) the third reactor solution is entered to be seeped into equally in the form of rain making in the experiment soil column, and
The different height and bottom collection water sample of the experiment soil column, until no longer containing the first tracer and second in water sample
Kind tracer, records the volume used in the third reactor solution；
5) according to the average annual precipitation of collecting soil sample point, the water age of such a soil interflow is calculated.
Preferably, the experiment soil column derives from the undisturbed soil sample of sampling position collection, the experiment soil column
As a kind of soil morphology of near-nature forest state.
Preferably, tracer used is not adsorbed by soil particle.
Further, the soil water is by the time (t) of precipitation complete displacement from soil, i.e. water age before calculating sampling position rain,
Formula be：
Wherein, t be sampling position rain before the soil water by precipitation complete displacement from soil time (my god), VAlwaysFor the third
The first reactor solution and second of reactor solution, amount used (L), S are reactor solution during displacement from soil completely
Upper bottom surface product (the m of the experiment soil column2), P is the mean annual precipitation (mm) of sampling position.
Beneficial effects of the present invention are：The application is risen by experimental simulation precipitation infiltration recharge and underground water hollow billet to be fed
The process of the soil water, the soil water goes out soil required time by complete displacement before further deriving rain.
Brief description of the drawings
Hereinafter it is described more fully with reference to the accompanying drawings some example embodiments of the present invention；However, the present invention can be with
Embody in different forms, should not be considered limited to embodiments set forth herein.On the contrary, accompanying drawing illustrates together with specification
Some example embodiments of the present invention, and for explaining the principle and aspect of the present invention.
Clear in order to illustrate in figure, size may be exaggerated.Throughout, identical reference refers to identical
Element.
Fig. 1 is the flow chart of the test method parsed according to a kind of interflow water age based on tracer technique of the present invention.
Embodiment
In the following detailed description, some exemplary embodiments of the invention are illustrated simply by the mode of illustration
And description.As the skilled person will recognize, described embodiment can be changed in a variety of ways,
All without departing from the spirit or scope of the present invention.Therefore, scheme and describe to be considered as inherently exemplary, and
It is not restricted.
Hereinafter, it is more fully described and is parsed according to the interflow water age based on tracer technique of the present invention with reference to the accompanying drawings
Test method.
A kind of test method of the interflow water age parsing based on tracer technique, this method comprise the following steps：
Step S1：From sampling position, collection undisturbed soil sample makes experiment soil column；
Step S2：Take 3 kinds of tracers to be separately added into water, and solution is made；
Step S3：The first reactor solution is entered to be seeped into experiment soil column, with simulation in the form of rain making
Precipitation Water log infiltration feeds the soil water, second of reactor solution is risen into the supply soil water by hollow billet, until experiment original state
The soil water in earth pillar reaches saturation state；
Step S4：The third reactor solution is entered to be seeped into experiment soil column equally in the form of rain making, and
Collection hole is set to collect water sample in the different height of experiment soil column and bottom, until no longer containing the first tracer in water sample
Agent and second of tracer, record the volume used in the third reactor solution；
Step S5：According to the average annual precipitation of collecting soil sample point, the water age of such a soil interflow is calculated.
Preferably, the undisturbed soil sample that soil column derives from sampling position collection is tested, the experiment soil column is as one
The soil morphology of kind near-nature forest state.
Preferably, tracer used in experiment is not adsorbed by soil particle.
In experiment, the first described reactor solution is entered to be seeped into experiment soil column in the form of rain making, and second
Kind reactor solution feeds the soil water by capillarity, as the soil water before rain；When can't detect the first tracer in water sample
When agent and second of tracer, that is, think the soil water complete displacement from soil completely by the third reactor solution before rain, remember
Record now the third reactor solution amount used VAlways(L)。
The soil water is by the time (t) of precipitation complete displacement from soil, i.e. water age before calculating sampling position rain, formula
For：
Wherein, t be sampling position rain before the soil water by precipitation complete displacement from soil time (my god), VAlwaysFor the third
Reactor solution amount used during complete displacement from soil completely the first reactor solution and second of reactor solution
(L), S is that the upper bottom surface of experiment soil column accumulates (m2), P is the mean annual precipitation (mm) of sampling position.
The test method of interflow water age parsing of the present invention based on tracer technique, it is simple easily operated, lead to
Cross simulated precipitation and infiltrate the process that supply rises the supply soil water with underground water hollow billet, the soil water is complete before further deriving rain
Full displacement goes out unexpected required time, and it calculates that resultant error is small.
Claims (4)
1. a kind of test method of the interflow water age parsing based on tracer technique, it is characterised in that including step：
1) from sampling position, collection undisturbed soil sample makes experiment soil column；
2) take 3 kinds of tracers to be separately added into water, and solution is made；
3) the first reactor solution is entered to be seeped into the form of rain making in the experiment soil column, accumulated with simulated precipitation
Water infiltrates the supply soil water, second of reactor solution is risen into the supply soil water by hollow billet, until the experiment undisturbed soil
The soil water in post reaches saturation state；
4) the third reactor solution is entered to be seeped into equally in the form of rain making in the experiment soil column, and described
The different height and bottom collection water sample of soil column are tested, until no longer containing the first tracer and showing for second in water sample
Track agent, record the volume used in the third reactor solution；
5) according to the average annual precipitation of collecting soil sample point, the water age of such a soil interflow is calculated.
2. test method according to claim 1, it is characterised in that the experiment soil column is adopted from sampling position
The undisturbed soil sample of collection, the experiment soil column is as a kind of soil morphology of near-nature forest state.
3. test method according to claim 1, it is characterised in that tracer used is not adsorbed by soil particle.
4. test method according to claim 1, it is characterised in that calculate before the rain of sampling position the soil water by precipitation from soil
The formula of the time (t) of complete displacement is in earth：
Wherein, t be sampling position rain before the soil water by precipitation complete displacement from soil time (my god), VAlwaysFor the third tracer
The first reactor solution and second of reactor solution, amount used (L), S are described to agent solution during displacement from soil completely
Test the upper bottom surface product (m of soil column2), P is the mean annual precipitation (mm) of sampling position.
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Cited By (2)
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| CN110850064A (en) * | 2019-12-03 | 2020-02-28 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Method for detecting new and old water flowing on slope surface and in soil |
| CN111220785A (en) * | 2020-01-21 | 2020-06-02 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Method for detecting water age of water body |
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| CN110850064A (en) * | 2019-12-03 | 2020-02-28 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Method for detecting new and old water flowing on slope surface and in soil |
| CN110850064B (en) * | 2019-12-03 | 2021-12-03 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Method for detecting new and old water flowing on slope surface and in soil |
| CN111220785A (en) * | 2020-01-21 | 2020-06-02 | 安徽省（水利部淮河水利委员会）水利科学研究院（安徽省水利工程质量检测中心站） | Method for detecting water age of water body |
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