CN102589619A - Vadose zone parameter tester - Google Patents
Vadose zone parameter tester Download PDFInfo
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- CN102589619A CN102589619A CN201210044373XA CN201210044373A CN102589619A CN 102589619 A CN102589619 A CN 102589619A CN 201210044373X A CN201210044373X A CN 201210044373XA CN 201210044373 A CN201210044373 A CN 201210044373A CN 102589619 A CN102589619 A CN 102589619A
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- testing column
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- aeration zone
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Abstract
The invention discloses a vadose zone parameter tester which comprises a testing column, and a plurality of piezometer tubes, a plurality of moisture content measurement instruments, a plurality of temperature sensors, a plurality of negative pressure sensors, a plurality of WSS (wide screen signalling) temperature gauges and a plurality of electric heaters which are distributed on the outer wall of the testing column, wherein the testing column is arranged in a closed way, and a sample can be arranged in the testing column; a base is arranged at the bottom end of the testing column; the connecting part between the testing column and the base is internally provided with a filter plate; the interior of the base is communicated with the interior of the testing column by the filter plate; and the base is provided with a drain pipe and a plurality of water inlet pipes. The vadose zone parameter tester is simple in structure, novel and reasonable in design, convenient to implement and operate and high in intelligent degree, and is capable of measuring larger samples; the measurement results have representativeness, and data with low moisture content and higher negative pressure value can be measured; and the vadose zone parameter tester is better in practicability, good in using effect and convenient in popularization and use.
Description
Technical field
The invention belongs to underground water scientific and engineering technical field, relate to a kind of underground water experimental provision, especially relate to a kind of aeration zone parameter determinator.
Background technology
In ecologic environment research, environmental pollution and agriculture water supply, the mensuration of aeration zone parameter is very important, but in the prior art, it is measured and also has two problems: one to be that sample is little (generally be no more than 100cm
3), the result that surveys lacks representativeness; Another is to be difficult to measure very little and the data that negative pressure value is bigger of water percentage.
Summary of the invention
Technical matters to be solved by this invention is to above-mentioned deficiency of the prior art a kind of aeration zone parameter determinator to be provided, and it is simple in structure, novel and reasonable design; It is convenient, easy to operate to realize, intelligent degree is high; The sample that can measure is big, and the result that surveys possesses representativeness, can measure very little and the data that negative pressure value is bigger of water percentage; Practical, result of use is good, is convenient to promote the use of.
For solving the problems of the technologies described above; The technical scheme that the present invention adopts is: a kind of aeration zone parameter determinator; It is characterized in that: comprise airtight setting and the testing column of the sample that is used to pack into and be laid in many piezometric tube on the testing column outer wall, a plurality of watercutmeter, a plurality of temperature sensor, a plurality of negative pressure transducer, a plurality of WSS thermometer and a plurality of electric heater; The bottom of said testing column is provided with base; The position set inside that said testing column is connected with base has filter plate, and said base is inner to be connected through filter plate with testing column inside, and said base is provided with drainpipe and Duo Gen water inlet pipe.
Above-mentioned aeration zone parameter determinator; It is characterized in that: comprise the negative pressure transmitter that joins with a plurality of negative pressure transducers; The temperature controller that all joins with a plurality of temperature sensors and a plurality of electric heater; The multi channel testing appearance that all joins with watercutmeter, negative pressure transmitter and temperature controller, and the computing machine that joins with the multi channel testing appearance.
Above-mentioned aeration zone parameter determinator is characterized in that: said testing column comprises columned test tube and is connected the cover of testing the tube top through flangeseal that the bottom of said test tube is a hemisphere face.
Above-mentioned aeration zone parameter determinator is characterized in that: said testing column is processed by the pyroceram steel, and the height of said testing column is 1.1m～1.3m, and the diameter of said testing column is 0.5m～0.7m, and the wall thickness of said testing column is 9mm～11mm.
Above-mentioned aeration zone parameter determinator is characterized in that: said piezometric tube is four, and four said piezometric tube evenly are laid on the said testing column outer wall along straight line from top to bottom.
Above-mentioned aeration zone parameter determinator; It is characterized in that: said watercutmeter is the FDR watercutmeter; The measurement of water ratio scope of said FDR watercutmeter is 0.01～0.99; Said FDR watercutmeter comprises dielectric sensing device, wave detector, signal amplification circuit module, A/D change-over circuit module, controller module, D/A change-over circuit module, variable frequency power source module, voltage controlled oscillator and the emitter follower that joins successively; And the power module that all joins with dielectric sensing device, signal amplification circuit module, controller module, D/A change-over circuit module, variable frequency power source module and voltage controlled oscillator, said emitter follower and said dielectric sensing device join.
Above-mentioned aeration zone parameter determinator is characterized in that: said watercutmeter is three, and three said watercutmeters evenly are laid on the said testing column outer wall along straight line from top to bottom.
Above-mentioned aeration zone parameter determinator is characterized in that: the temperature measurement range of said temperature sensor is 0 ℃～120 ℃.
Above-mentioned aeration zone parameter determinator; It is characterized in that: said negative pressure transducer is three; Three said negative pressure transducers evenly are laid on the said testing column outer wall along straight line from top to bottom, and the negative pressure measurement range of said negative pressure transducer is 0.02kPa～100kPa.
Above-mentioned aeration zone parameter determinator is characterized in that: said water inlet pipe is three.
The present invention compared with prior art has the following advantages:
1, of the present invention simple in structure, novel and reasonable design, it is convenient to realize.
2, the present invention carries out the mensuration of moisture in the aeration zone, temperature and negative pressure parameter; Easy to operate; Through the cooperation of (comprising watercutmeter, temperature sensor, negative pressure transducer, WSS thermometer, negative pressure transmitter, temperature controller and multi channel testing appearance) of a plurality of test apparatuses; Can realize the record and the storage of water percentage, negative pressure, temperature data, intelligent degree is high.
3, the volume of testing column of the present invention is big, and the sample that can measure is big, and the result that surveys possesses representativeness.
4, the present invention is provided with electric heater on the testing column outer wall; Temperature controller can also be controlled the heating process of electric heater according to the detected temperature data of temperature sensor; Testing column is processed by the pyroceram steel; Can bear 110 ℃ of high temperature, make the present invention can measure very little and the data that negative pressure value is bigger of water percentage.
5, of the present invention practical; Can accurately record moisture in the aeration zone, temperature and negative pressure parameter; For solving water resources development and utilization and the ecological environmental protection problem (like problems such as soil desertification, salination and groundwater quality deteriorations) relevant with aeration zone; The migration rule of prediction seepage flow pollutant is laid a good foundation, and result of use is good, is convenient to promote the use of.
In sum, the present invention is simple in structure, novel and reasonable design, and it is convenient to realize; Easy to operate, intelligent degree is high, and the sample that can measure is big, and the result that surveys possesses representativeness; Can measure very little and the data that negative pressure value is bigger of water percentage, practical, result of use is good, is convenient to promote the use of.
Through accompanying drawing and embodiment, technical scheme of the present invention is done further detailed description below.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the schematic block circuit diagram of FDR watercutmeter of the present invention.
Description of reference numerals:
1-1-tests tube; The 1-2-ring flange; The 1-3-cover;
The 2-piezometric tube; The 3-watercutmeter; 3-1-dielectric sensing device;
The 3-2-wave detector; 3-3-signal amplification circuit module;
3-4-A/D change-over circuit module; The 3-5-controller module;
3-6-D/A change-over circuit module; 3-7-variable frequency power source module;
The 3-8-voltage controlled oscillator; The 3-9-emitter follower; The 3-10-power module;
The 4-temperature sensor; The 5-negative pressure transducer; The 6-WSS thermometer;
The 7-electric heater; The 8-base; The 9-drainpipe;
The 10-water inlet pipe; 11-negative pressure transmitter; The 12-temperature controller;
13-multi channel testing appearance; The 14-computing machine.
Embodiment
As shown in Figure 1; The present invention includes airtight setting and the testing column of the sample that is used to pack into and be laid in many piezometric tube 2, a plurality of watercutmeter 3, a plurality of temperature sensor 4, a plurality of negative pressure transducer 5, a plurality of WSS thermometer 6 and a plurality of electric heater 7 on the testing column outer wall; The bottom of said testing column is provided with base 8; The position set inside that said testing column is connected with base 8 has filter plate; Said base 8 inside are connected through filter plate with testing column inside, and said base 8 is provided with drainpipe 9 and Duo Gen water inlet pipe 10.
As shown in Figure 1; The present invention also comprises the negative pressure transmitter 11 that joins with a plurality of negative pressure transducers 5; The temperature controller 12 that all joins with a plurality of temperature sensors 4 and a plurality of electric heaters 7; The multi channel testing appearance 13 that all joins with watercutmeter 3, negative pressure transmitter 11 and temperature controller 12, and the computing machine 14 that joins with multi channel testing appearance 13.Wherein, multi channel testing appearance 13 has 20 circuit-switched data collection terminals, can write down and store water percentage, negative pressure, temperature data automatically; Multi channel testing appearance 13 recorded data can also read in the computing machine 14 and write down, analyze, and supply the staff to check.Temperature controller 12 can be controlled the heating process of electric heater 7 according to temperature sensor 4 detected temperature datas, and electric heater can provide the heat energy that is no less than 2KW.
As shown in Figure 1, in the present embodiment, said testing column comprises columned test tube 1-1 and is sealedly connected on the cover 1-3 on test tube 1-1 top through ring flange 1-2, and the bottom of said test tube 1-1 is a hemisphere face, and hemispherical height of center is 10cm.Said testing column is processed by the pyroceram steel, can bear 110 ℃ of high temperature; The height of said testing column is 1.1m～1.3m, and the diameter of said testing column is 0.5m～0.7m, and the wall thickness of said testing column is 9mm～11mm.Preferably, the height of said testing column is 1.2m, and the diameter of said testing column is 0.618m, and the wall thickness of said testing column is 10mm.
As shown in Figure 1, in the present embodiment, said piezometric tube 2 is four, and four said piezometric tube 2 evenly are laid on the said testing column outer wall along straight line from top to bottom.
In conjunction with Fig. 2; In the present embodiment; Said watercutmeter 3 is the FDR watercutmeter; The measurement of water ratio scope of said FDR watercutmeter is 0.01～0.99; Said FDR watercutmeter comprises dielectric sensing device 3-1, wave detector 3-2, signal amplification circuit module 3-3, A/D change-over circuit module 3-4, controller module 3-5, D/A change-over circuit module 3-6, variable frequency power source module 3-7, voltage controlled oscillator 3-8 and the emitter follower 3-9 that joins successively; And the power module 3-10 that all joins with dielectric sensing device 3-1, signal amplification circuit module 3-3, controller module 3-5, D/A change-over circuit module 3-6, variable frequency power source module 3-7 and voltage controlled oscillator 3-8, said emitter follower 3-9 and said dielectric sensing device 3-1 join.FDR (Frequency Domain Reflectometry) watercutmeter; Be based on that the specific inductive capacity of water is far longer than the specific inductive capacity of other material in the aeration zone matrix and the specific inductive capacity of air in the aeration zone; Therefore the specific inductive capacity of soil mainly depends on these characteristics of water cut of soil; Measure the specific inductive capacity of aeration zone according to electromagnetic wave frequencies of propagation in medium, thereby obtain the volume moisture content of aeration zone.
As shown in Figure 1, in the present embodiment, said watercutmeter 3 is three, and three said watercutmeters 3 evenly are laid on the said testing column outer wall along straight line from top to bottom.The temperature measurement range of said temperature sensor 4 is 0 ℃～120 ℃.Said negative pressure transducer 5 is three, and three said negative pressure transducers 5 evenly are laid on the said testing column outer wall along straight line from top to bottom, and the negative pressure measurement range of said negative pressure transducer 5 is 0.02kPa～100kPa.Said water inlet pipe 10 is three.
The present invention can be used in moisture, temperature and negative pressure parameter in the aeration zone are measured.
Carry out the preceding preliminary work of experiment with measuring:
1, confirms the unit dry weight of sample;
2, owing to the testing column inner wall smooth of processing by the pyroceram steel,, on the testing column inwall, paste waterproof abrasive cloth, make its inner wall surface coarse with double faced adhesive tape in order to reduce boundary effect;
3, on filter plate, fill up filter screen, prevent that sample scatters and disappears with current;
4, the piezometric tube 2 on the shutoff testing column outer wall and a plurality of hole that is used to install a plurality of watercutmeters 3 and a plurality of negative pressure transducer 5;
5, filling sample to test tube 1-1 mouth in test tube 1-1; Cover 1-3 is sealedly connected on test tube 1-1 top through ring flange 1-2;
6, at drainpipe 9 and the external confession in Duo Gen water inlet pipe 10 places (row) water tank, will supply (row) water tank to be increased to the testing column top end, open water inlet; Supply water in testing column through many water inlet pipes 10, make sample saturated, close water inlet after sample is saturated; Saturated continuing at least slowly put down confession (row) water tank after 6 hours, and the water in the sample is drained through drainpipe 9; Draining continues 6 hours, and this process will be carried out 2～3 times, so that sample is fully closely knit;
7, all experimental apparatuss (comprising watercutmeter 3, temperature sensor 4, negative pressure transducer 5, WSS thermometer 6, negative pressure transmitter 11, temperature controller 12 and multi channel testing appearance 13) are debugged, demarcated.
Aeration zone parametric measurement test method and step (is example with the dehydration):
1, adopts specific purpose tool that a plurality of watercutmeter 3, a plurality of temperature sensor 4, a plurality of negative pressure transducer 5 and a plurality of WSS thermometer 6 are installed on the testing column outer wall, and make dielectric sensing device 3-1 and negative pressure transducer 5 in the watercutmeter 3 stretch in the testing column; Negative pressure transmitter 11 is connected with a plurality of negative pressure transducers 5, temperature controller 12 is connected with a plurality of electric heaters 7 with a plurality of temperature sensors 4;
2, control supplies (row) water tank to the appropriate location; Make sample saturated; And to make negative pressure transmitter 11 readings be zero, continues several hours, confirm the stable reading of whole negative pressure transmitter 11, watercutmeter 3 after; Multi channel testing appearance 13 is connected with watercutmeter 3, negative pressure transmitter 11 and temperature controller 12, writes down and store water percentage, negative pressure, temperature data through multi channel testing appearance 13;
3, reduce the about 20cm of confession (row) water tank, the operation of repeating step 2 once more;
4, supply (row) water tank extremely bottom when reducing; Under state of nature during anhydrous row; Open electric heater 7; Temperature controller 12 is controlled the heating process of electric heater 7 according to temperature sensor 4 detected temperature datas, and the sample in the testing column is heated evenly, and temperature is controlled at earlier about 35 ℃.Heating a period of time is after the reading of treating temperature controller 12 and negative pressure transmitter 11 all stablize, again through multi channel testing appearance 13 records and store water percentage, negative pressure, temperature data;
5, when water percentage does not also reach residual water percentage, progressively improve heating-up temperature (once can heat 10 ℃), repeating step 4 again, till meeting the demands; Whole test data volume (water percentage, negative pressure, temperature data) should be less than 50 groups.
6, multi channel testing appearance 13 is connected with computing machine 14, multi channel testing appearance 13 recorded data can also read in the computing machine 14 and write down, analyze, and supply the staff to check.
Through above operation, can measure very little and the data that negative pressure value is bigger of water percentage.
The above; It only is preferred embodiment of the present invention; Be not that the present invention is done any restriction, every technical spirit changes any simple modification, change and the equivalent structure that above embodiment did according to the present invention, all still belongs in the protection domain of technical scheme of the present invention.
Claims (10)
1. aeration zone parameter determinator; It is characterized in that: comprise airtight setting and the testing column of the sample that is used to pack into and be laid in the many piezometric tube (2) on the testing column outer wall, a plurality of watercutmeter (3), a plurality of temperature sensor (4), a plurality of negative pressure transducer (5), a plurality of WSS thermometer (6) and a plurality of electric heater (7); The bottom of said testing column is provided with base (8); Said testing column has filter plate with the position set inside that base (8) is connected; Said base (8) is inner to be connected through filter plate with testing column inside, and said base (8) is provided with drainpipe (9) and many water inlet pipes (10).
2. according to the described aeration zone parameter determinator of claim 1; It is characterized in that: comprise the negative pressure transmitter (11) that joins with a plurality of negative pressure transducers (5); The temperature controller (12) that all joins with a plurality of temperature sensors (4) and a plurality of electric heater (7); The multi channel testing appearance (13) that all joins with watercutmeter (3), negative pressure transmitter (11) and temperature controller (12), and the computing machine (14) that joins with multi channel testing appearance (13).
3. according to claim 1 or 2 described aeration zone parameter determinators; It is characterized in that: said testing column comprises columned test tube (1-1) and is sealedly connected on the cover (1-3) of testing tube (1-1) top through ring flange (1-2) that the bottom of said test tube (1-1) is a hemisphere face.
4. according to the described aeration zone parameter determinator of claim 3; It is characterized in that: said testing column is processed by the pyroceram steel; The height of said testing column is 1.1m～1.3m, and the diameter of said testing column is 0.5m～0.7m, and the wall thickness of said testing column is 9mm～11mm.
5. according to the described aeration zone parameter determinator of claim 3, it is characterized in that: said piezometric tube (2) is four, and four said piezometric tube (2) evenly are laid on the said testing column outer wall along straight line from top to bottom.
6. according to the described aeration zone parameter determinator of claim 3; It is characterized in that: said watercutmeter (3) is the FDR watercutmeter; The measurement of water ratio scope of said FDR watercutmeter is 0.01～0.99; Said FDR watercutmeter comprises dielectric sensing device (3-1), wave detector (3-2), signal amplification circuit module (3-3), A/D change-over circuit module (3-4), controller module (3-5), D/A change-over circuit module (3-6), variable frequency power source module (3-7), voltage controlled oscillator (3-8) and the emitter follower (3-9) that joins successively; And the power module (3-10) that all joins with dielectric sensing device (3-1), signal amplification circuit module (3-3), controller module (3-5), D/A change-over circuit module (3-6), variable frequency power source module (3-7) and voltage controlled oscillator (3-8), said emitter follower (3-9) joins with said dielectric sensing device (3-1).
7. according to the described aeration zone parameter determinator of claim 6, it is characterized in that: said watercutmeter (3) is three, and three said watercutmeters (3) evenly are laid on the said testing column outer wall along straight line from top to bottom.
8. according to the described aeration zone parameter determinator of claim 3, it is characterized in that: the temperature measurement range of said temperature sensor (4) is 0 ℃～120 ℃.
9. according to the described aeration zone parameter determinator of claim 3; It is characterized in that: said negative pressure transducer (5) is three; Three said negative pressure transducers (5) evenly are laid on the said testing column outer wall along straight line from top to bottom, and the negative pressure measurement range of said negative pressure transducer (5) is 0.02kPa～100kPa.
10. according to the described aeration zone parameter determinator of claim 3, it is characterized in that: said water inlet pipe (10) is three.
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| CN201210044373XA CN102589619A (en) | 2012-02-26 | 2012-02-26 | Vadose zone parameter tester |
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| CN201210044373XA CN102589619A (en) | 2012-02-26 | 2012-02-26 | Vadose zone parameter tester |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112357382A (en) * | 2020-10-12 | 2021-02-12 | 浙江亚德复合材料有限公司 | Glass steel wisdom storage tank |
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| US20030121336A1 (en) * | 2002-01-03 | 2003-07-03 | Bechtel Bwxt Idaho, Llc | Method of retrieving a liquid sample, a suction lysimeter, a portable suction lysimeter, a lysimeter systen, and a deep lysimeter |
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| US20100307754A1 (en) * | 2009-06-04 | 2010-12-09 | Savannah River Nuclear Solutions, Llc | Aerosol injection into vadose zone |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112357382A (en) * | 2020-10-12 | 2021-02-12 | 浙江亚德复合材料有限公司 | Glass steel wisdom storage tank |
| CN112357382B (en) * | 2020-10-12 | 2022-04-26 | 浙江亚德复合材料有限公司 | Glass steel wisdom storage tank |
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Application publication date: 20120718 |