CN103543249A - Experimental device and experimental method used for research of thin film water migration laws - Google Patents
Experimental device and experimental method used for research of thin film water migration laws Download PDFInfo
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- CN103543249A CN103543249A CN201310483018.7A CN201310483018A CN103543249A CN 103543249 A CN103543249 A CN 103543249A CN 201310483018 A CN201310483018 A CN 201310483018A CN 103543249 A CN103543249 A CN 103543249A
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Abstract
The invention discloses an experimental method used for research of thin film water migration laws. The experimental method comprises following steps: experimental soil sample is delivered into a soil column in layers; ionized water with a certain concentration is delivered into a water supply device, and a small amount of plant oil is added for oil seal of the ionized water; a certain amount of water is added into the water supply device every a period of time so as to ensure that the water level is higher than a buffer layer of the soil column; in experimental processes, data acquired by a humidity temperature sensor is sent to a data acceptance and analysis system via a wireless data sent terminal for analysis; and a certain period of time later, the soil is sampled for another time so as to measure water content and ion concentration of soil of different depth. The experimental method is capable of realizing accurate research on thin film water migration rate under different soil conditions, so that reliable experimental base is provided for research of water migration of soil in arid areas. The invention also discloses an experimental device used for the experimental method which is used for research of thin film water migration.
Description
Technical field
The present invention relates to soil-water environment experiment test field, is a kind of experimental provision and method of Study of Thin film water migration rule specifically.
Background technology
In the research of these four kinds of water of atmospheric precipitation, surface water, the holard and underground water, the research of the holard is relatively less, and pellicular water is the ingredient of the holard, and its locomotory mechanism it be unclear that, so arid soil water comes source problem still to there is much controversy.Existing research shows, arid biogeographic zone precipitation is difficult to be seeped into certain depth in soil, and the holard is mainly by the recharge of ground water.Underground water can only arrive certain altitude by capillary water supply and just not increase; Up walk, pellicular water migration plays a major role again.Probe into the migration rule of pellicular water under the variation of moisture gradient, ion concentration gradient and temperature and there is very high scientific research value and application prospect putting before this contrived experiment device and experimental technique.
Summary of the invention
Technical matters to be solved by this invention, for the defect in aforementioned background art and deficiency, a kind of experimental provision and method of Study of Thin film water migration rule are provided, its arid soil water that can remain in dispute by in-house laboratory investigation academic circles at present carrys out source problem, provides more intuitively the pellicular water migration rule under different soils environment.
The present invention is for solving above technical matters, and the technical scheme adopting is:
An experimental provision for Study of Thin film water migration, comprises earth pillar cylinder, water device for supplying, humidity temperature pickup, wireless data transmission terminal, data receiver and disposal system and soil sample barrel, and described earth pillar cylinder comprises experiment soil sample layer and cushion; Described water device for supplying is connected with earth pillar cylinder by conduit, and device is carved with upper and lower two on sidewall determine level scale line, and the lower cushion of determining level scale line and earth pillar cylinder is contour, and the distance between scale mark is 5cm up and down; Described humidity temperature pickup is a plurality of, and described a plurality of humidity temperature pickups are axially distributed on earth pillar cylinder inwall along earth pillar cylinder, by data bus, are connected to wireless data transmission terminal; Wireless data transmission terminal comprises analog-to-digital conversion module and wireless data transmission module; In experimentation, humidity temperature pickup is responded to respectively the temperature and humidity information of each soil layer, by wire, simulating signal is sent to the analog-to-digital conversion module of wireless data transmission terminal, then by wireless data transmission module, data message is sent to disposal system; Described soil sample barrel comprises by built-in bolted short tube and metal sampling groove.
As preferably, above-mentioned earth pillar cylinder adopts the plastic pipe that tensile strength is larger to make, and interface adopts sealing property and the good sealant sealing of anti-time ageing properties.
The whole length of above-mentioned soil sample barrel can regulate by increase and decrease short tube, and easy layering soil sampling, with respect to common Luoyang Spade, has reduced the disturbance to soil layer, and sampling depth is more accurate.
The caliber of the cushion of above-mentioned earth pillar cylinder is greater than the caliber of soil sample test layer.
As preferably, described a plurality of humidity temperature pickups are distributed on earth pillar cylinder inwall by mono-of every 10cm.
An experimental technique for Study of Thin film water migration rule, comprises the following steps:
(A) step: pack the coarse gravel that particle diameter is 6-8mm in the bottom buffer layer of earth pillar cylinder into; And, water permeability good geotextile identical with earth pillar cylinder internal diameter with diameter lie on the particle of cushion, by certain porosity layering, pack subsequently the soil sample of certain granules grating into, every layer of 10cm, is filled to specified altitude assignment;
(B) step: water device for supplying is communicated with by conduit and earth pillar cylinder, adds in water device for supplying that finite concentration ionized water is supreme determines level scale line, and then inject a small amount of vegetable oil water body is carried out to oil sealing, prevent moisture evaporation; Whenever water device for supplying water level drops to, approach down while determining level scale line, use syringe is determined level scale line to water filling under the oil sealing layer of water device for supplying to upper, and records the moment of each water filling and the water yield of injection;
(C) step: the temperature and humidity data that every other day record the different depth soil body in experimentation by the humidity temperature pickup on earth pillar cylinder inwall;
(D) step: be contrast experiment with a plurality of identical devices, only need to change ionized water concentration, other operations are identical;
(E) step: Therapy lasted is after month, with soil sample barrel, respectively each device is sampled, every 10cm sampling once, measure respectively water percentage and the ion concentration of each sample, by water injection rate data and temperature humidity over time rule and soil sample ion concentration with the migration rule of the analysis of distribution pellicular water of soil layer;
Specific analytical method is as follows:
First, according to water injection rate data, can obtain the speed that water outlet enters the soil body
,
, wherein,
the water yield that enters the soil body, in ml,
for this water yield enters the time that the soil body consumes,
for soil body floorage in earth pillar cylinder;
Secondly, by the weight moisture capacity data of obtaining, can obtain height that pellicular water rises and the porous media of each elevation, pellicular water lifting height H be take the soil layer height that weight moisture capacity is 1% and is as the criterion; Weight moisture capacity individual-layer data comparative analysis by different time, can obtain the pellicular water migration rate under different water cut gradient
, wherein,
for the water cut of the above soil body of Z height in earth pillar cylinder,
for the soil body dry unit weight of unit height in earth pillar cylinder,
the soil body volumetric water content that earth pillar cylinder inner height is z;
Finally, by pellicular water migration rate in earth pillar cylinder under varying environment temperature conditions, contrast, draw the impact of temperature on pellicular water migration; By pellicular water migration rate in the earth pillar cylinder of interpolation different ions concentration water, contrast, draw the impact of ion concentration on pellicular water migration rate.
beneficial effect: the present invention has the following advantages: scientific structure design is reasonable, can Real-time Obtaining pellicular water temperature and humidity data in migration experimentation, greatly improved scientific research efficiency.The migration rule of Study of Thin film water that can be more accurate by the experimental provision described in this patent of invention and experimental technique, has very high scientific research value and application prospect, for the research of arid soil water migration rule provides experiment basis.
Accompanying drawing explanation
Fig. 1 is experimental provision structural representation of the present invention;
Wherein, 1, earth pillar cylinder; 2, water device for supplying; 3, humidity temperature pickup; 4, wireless data transmission terminal; 5, data receiver and disposal system; 6, soil sample barrel.
Embodiment
Below with reference to accompanying drawing, technical scheme of the present invention is elaborated.
As shown in Figure 1, the invention provides a kind of experimental provision of Study of Thin film water migration rule, comprise earth pillar cylinder 1, water device for supplying 2, humidity temperature pickup 3, wireless data transmission terminal 4, data receiver and disposal system 5 and soil sample barrel 6, described earth pillar cylinder 1 comprises top experiment soil sample layer and lower buffer layer, and buffer inner diameter is greater than experiment soil sample layer internal diameter; Described water device for supplying 2 is connected with the lower buffer layer of earth pillar cylinder 1 by conduit, and device is carved with upper and lower two on sidewall determine level scale line, and the lower cushion of determining level scale line and earth pillar cylinder is contour, and the distance between scale mark is 5cm up and down; Described humidity temperature pickup 3 is distributed on earth pillar cylinder inwall by mono-of every 10cm, by data bus, is connected to wireless data transmission terminal 4; Wireless data transmission terminal 4 comprises analog-to-digital conversion module and wireless data transmission module; In experimentation, humidity temperature pickup 3 is responded to respectively the temperature and humidity information of each soil layer in earth pillar cylinder 1, by wire, simulating signal is sent to the analog-to-digital conversion module of wireless data transmission terminal 1, then by wireless data transmission module, data message is sent to data receiver and disposal system 5; Described soil sample barrel 6 comprises can pass through built-in bolted short tube and metal sampling groove.
The present invention also provides a kind of experimental technique of Study of Thin film water migration rule, comprises the following steps:
(A) step, in the bottom buffer layer of earth pillar cylinder 1, pack the coarse gravel that particle diameter is 6-8mm into; And, water permeability good geotextile identical with earth pillar cylinder 1 internal diameter with diameter lie on the particle of cushion, by certain porosity layering, pack subsequently the soil sample of certain granules grating into, every layer of 10cm, is filled to specified altitude assignment; (herein " " porosity " " grain composition " " specified altitude assignment " can set voluntarily according to the operating mode of requirement of experiment and experimental simulation).
(B) step, the lower buffer layer by water device for supplying 2 by conduit and earth pillar cylinder 1 are communicated with, and add that ionized water is supreme determines level scale line in water device for supplying 2, then water body are carried out to oil sealing injecting a small amount of vegetable oil, prevent moisture evaporation; Whenever water device for supplying water level drops to, approach down while determining level scale line, use syringe is determined level scale line to water filling under the oil sealing layer of water device for supplying to upper, and records the moment of each water filling and the water yield of injection;
(C) in step, experimentation, by the humidity temperature pickup 3 on earth pillar cylinder 1 inwall, every other day record the temperature and humidity data of the different depth soil body;
(D) step, with a plurality of identical devices, be contrast experiment, only need to change ionized water concentration, other operations are identical;
(E) step, Therapy lasted are approximately after one month, with soil sample barrel 6, respectively each device is sampled, every 10cm sampling once, measure respectively water percentage and the ion concentration of each sample, by water injection rate data and temperature humidity over time rule and soil sample ion concentration with the migration rule of the analysis of distribution pellicular water of soil layer;
Specific analytical method is as follows:
First, according to water injection rate data, can obtain the speed that water outlet enters the soil body
,
, wherein,
the water yield that enters the soil body, in ml,
for this water yield enters the time that the soil body consumes,
for soil body floorage in earth pillar cylinder;
Secondly, by the weight moisture capacity data of obtaining, can obtain height that pellicular water rises and the porous media of each elevation, pellicular water lifting height H be take the soil layer height that weight moisture capacity is 1% and is as the criterion; Weight moisture capacity individual-layer data comparative analysis by different time, can obtain the pellicular water migration rate under different water cut gradient
, wherein,
for the water cut of the above soil body of Z height in earth pillar cylinder,
for the soil body dry unit weight of unit height in earth pillar cylinder,
the soil body volumetric water content that earth pillar cylinder inner height is z;
Finally, by pellicular water migration rate in earth pillar cylinder under varying environment temperature conditions, contrast, draw the impact of temperature on pellicular water migration; By pellicular water migration rate in the earth pillar cylinder of interpolation different ions concentration water, contrast, draw the impact of ion concentration on pellicular water migration rate.
By this method, the migration rule of Study of Thin film water that can be more scientific and reasonable, what the while can be more accurate determines under the impact of different water cut gradient, ion concentration and environment temperature, the migration rate of pellicular water in the soil body.
Claims (6)
1. the experimental provision of Study of Thin film water migration, it is characterized in that: comprise earth pillar cylinder, water device for supplying, humidity temperature pickup, wireless data transmission terminal, data receiver and disposal system and soil sample barrel, wherein, described earth pillar cylinder comprises experiment soil sample layer and cushion; Described water device for supplying is connected with earth pillar cylinder by conduit, and device is carved with upper and lower two on sidewall determine level scale line, and the lower cushion of determining level scale line and earth pillar cylinder is contour, and the distance between scale mark is 5cm up and down; Described humidity temperature pickup is a plurality of, and described a plurality of humidity temperature pickups are axially distributed on earth pillar cylinder inwall along earth pillar cylinder, by data bus, are connected to wireless data transmission terminal; Wireless data transmission terminal comprises analog-to-digital conversion module and wireless data transmission module; In experimentation, humidity temperature pickup is responded to respectively the temperature and humidity information of each soil layer, by wire, simulating signal is sent to the analog-to-digital conversion module of wireless data transmission terminal, then by wireless data transmission module, data message is sent to disposal system; Described soil sample barrel comprises by built-in bolted short tube and metal sampling groove.
2. the experimental provision of a kind of Study of Thin film water migration according to claim 1, is characterized in that adopting the plastic pipe that tensile strength is larger to make in earth pillar cylinder, and interface adopts sealing property and the good sealant sealing of anti-time ageing properties.
3. the experimental provision of a kind of Study of Thin film water migration according to claim 2, is characterized in that the whole length of soil sample barrel regulates by increase and decrease short tube.
4. the experimental provision of a kind of Study of Thin film water migration according to claim 3, is characterized in that the caliber of the cushion of earth pillar cylinder is greater than the caliber of soil sample test layer.
5. the experimental provision of a kind of Study of Thin film water migration according to claim 4, is characterized in that described a plurality of humidity temperature pickup is distributed on earth pillar cylinder inwall by mono-of every 10cm.
6. an experimental technique for the experimental provision based on Study of Thin film water migration rule as claimed in claim 1, is characterized in that comprising the following steps:
(A) step: pack the coarse gravel that particle diameter is 6-8mm in the bottom buffer layer of earth pillar cylinder into; And, water permeability good geotextile identical with earth pillar cylinder internal diameter with diameter lie on the particle of cushion, by certain porosity layering, pack subsequently the soil sample of certain granules grating into, every layer of 10cm, is filled to specified altitude assignment;
(B) step: water device for supplying is communicated with by conduit and earth pillar cylinder, adds in water device for supplying that finite concentration ionized water is supreme determines level scale line, and then inject a small amount of vegetable oil water body is carried out to oil sealing, prevent moisture evaporation; Whenever water device for supplying water level drops to, approach down while determining level scale line, use syringe is determined level scale line to water filling under the oil sealing layer of water device for supplying to upper, and records the moment of each water filling and the water yield of injection;
(C) step: the temperature and humidity data that every other day record the different depth soil body in experimentation by the humidity temperature pickup on earth pillar cylinder inwall;
(D) step: be contrast experiment with a plurality of identical devices, only need to change ionized water concentration, other operations are identical;
(E) step: Therapy lasted is after month, with soil sample barrel, respectively each device is sampled, every 10cm sampling once, measure respectively water percentage and the ion concentration of each sample, by water injection rate data and temperature humidity over time rule and soil sample ion concentration with the migration rule of the analysis of distribution pellicular water of soil layer;
Specific analytical method is as follows:
First, according to water injection rate data, can obtain the speed that water outlet enters the soil body
,
, wherein,
the water yield that enters the soil body, in ml,
for this water yield enters the time that the soil body consumes,
for soil body floorage in earth pillar cylinder;
Secondly, by the weight moisture capacity data of obtaining, can obtain height that pellicular water rises and the porous media of each elevation, pellicular water lifting height H be take the soil layer height that weight moisture capacity is 1% and is as the criterion; Weight moisture capacity individual-layer data comparative analysis by different time, can obtain the pellicular water migration rate under different water cut gradient
, wherein,
for the water cut of the above soil body of Z height in earth pillar cylinder,
for the soil body dry unit weight of unit height in earth pillar cylinder,
the soil body volumetric water content that earth pillar cylinder inner height is z;
Finally, by pellicular water migration rate in earth pillar cylinder under varying environment temperature conditions, contrast, draw the impact of temperature on pellicular water migration; By pellicular water migration rate in the earth pillar cylinder of interpolation different ions concentration water, contrast, draw the impact of ion concentration on pellicular water migration rate.
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Cited By (5)
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| CN105510553A (en) * | 2015-12-22 | 2016-04-20 | 江西理工大学 | Testing device and method for researching migration and transformation rule of nitrogen in ion-absorbed rare earth mine |
| CN106123964A (en) * | 2016-08-05 | 2016-11-16 | 浙江陆特能源科技股份有限公司 | Ground source rock soil layer vertical temperature distribution test and underground water level measurement device |
| CN107462506A (en) * | 2017-07-19 | 2017-12-12 | 中国水利水电科学研究院 | Frozen soil interflow water source type detection method based on tracer technique |
| CN111830235A (en) * | 2020-06-17 | 2020-10-27 | 安徽理工大学 | Frozen soil body model and construction method of frozen soil body water migration model |
| CN112858639A (en) * | 2021-03-07 | 2021-05-28 | 昆明理工大学 | Device for simulating longitudinal migration of heavy metal in actual soil environment |
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| US20060046297A1 (en) * | 2004-08-31 | 2006-03-02 | Ball Raymond G | In situ remedial alternative and aquifer properties evaluation probe system |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510553A (en) * | 2015-12-22 | 2016-04-20 | 江西理工大学 | Testing device and method for researching migration and transformation rule of nitrogen in ion-absorbed rare earth mine |
| CN106123964A (en) * | 2016-08-05 | 2016-11-16 | 浙江陆特能源科技股份有限公司 | Ground source rock soil layer vertical temperature distribution test and underground water level measurement device |
| CN106123964B (en) * | 2016-08-05 | 2018-06-26 | 浙江陆特能源科技股份有限公司 | Ground source rock soil layer vertical temperature distribution test and underground water level measurement device |
| CN107462506A (en) * | 2017-07-19 | 2017-12-12 | 中国水利水电科学研究院 | Frozen soil interflow water source type detection method based on tracer technique |
| CN107462506B (en) * | 2017-07-19 | 2018-11-30 | 中国水利水电科学研究院 | Frozen soil interflow water source type detection method based on tracer technique |
| CN111830235A (en) * | 2020-06-17 | 2020-10-27 | 安徽理工大学 | Frozen soil body model and construction method of frozen soil body water migration model |
| CN111830235B (en) * | 2020-06-17 | 2022-07-12 | 安徽理工大学 | Frozen soil model and method for constructing frozen soil moisture migration model |
| CN112858639A (en) * | 2021-03-07 | 2021-05-28 | 昆明理工大学 | Device for simulating longitudinal migration of heavy metal in actual soil environment |
| CN112858639B (en) * | 2021-03-07 | 2024-03-01 | 昆明理工大学 | Device for simulating longitudinal migration of heavy metals in actual soil environment |
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