CN110940607A - Near-surface water flux measuring system and method - Google Patents
Near-surface water flux measuring system and method Download PDFInfo
- Publication number
- CN110940607A CN110940607A CN201911361309.2A CN201911361309A CN110940607A CN 110940607 A CN110940607 A CN 110940607A CN 201911361309 A CN201911361309 A CN 201911361309A CN 110940607 A CN110940607 A CN 110940607A
- Authority
- CN
- China
- Prior art keywords
- inner cylinder
- soil
- water flux
- detection device
- surface water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000004907 flux Effects 0.000 title claims abstract description 38
- 239000002352 surface water Substances 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 19
- 239000002689 soil Substances 0.000 claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 36
- 238000012806 monitoring device Methods 0.000 claims abstract description 33
- 238000001514 detection method Methods 0.000 claims abstract description 32
- 238000005259 measurement Methods 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims description 11
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 239000002041 carbon nanotube Substances 0.000 claims description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 3
- 230000004888 barrier function Effects 0.000 claims 1
- 238000009833 condensation Methods 0.000 abstract description 9
- 230000005494 condensation Effects 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 6
- 230000008020 evaporation Effects 0.000 abstract description 2
- 238000001704 evaporation Methods 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/048—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance for determining moisture content of the material
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
- G01N33/246—Earth materials for water content
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/04—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder
- G01N5/045—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by removing a component, e.g. by evaporation, and weighing the remainder for determining moisture content
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention relates to the field of soil moisture measurement, and discloses a system and a method for measuring near-surface water flux. The measurement system includes: the inner cylinder, the weight detection device, the humidity monitoring device and the data acquisition device are arranged on the inner cylinder, the bottom of the inner cylinder is provided with a bottom plate, and the weight detection device is arranged in an empty bin at the top of the inner cylinder and used for detecting the weight of soil in the inner cylinder in real time. The humidity monitoring devices are multiple and are arranged at equal intervals along the axial direction of the inner barrel. The invention can detect the quality of the evaporation and condensation water of the soil by using the weight detection device, obtain the near-surface water flux by calculating the experimental time and the cross-sectional area of the inner cylinder, and detect the condensation depth of the water vapor of the soil by using the humidity monitoring device, thereby accurately reflecting and reproducing the generation process of the water vapor condensation in the soil. The near-surface water flux measuring system has the advantages of reasonable structure, light weight, automatic recording and accurate observation.
Description
Technical Field
The invention relates to the field of soil moisture measurement, in particular to a system and a method for measuring near-surface water flux.
Background
Water flux refers to the volume or mass of water passing through a unit of membrane area per unit of time, per unit of pressure. The water flux near the surface of the arid region is generally generated by the actions of trace rainfall, evaporation, condensation and the like, the vertical circulation of water in a natural state can be directly researched by measuring the trace water flux, and the generation time and the generation amount of the condensed water in the soil can be directly estimated by combining the temperature change and calculation. At present, methods for measuring soil water flux on the near-surface are divided into two methods, one method is an indirect estimation method and comprises a vorticity covariance system, a large-caliber scintillator and the like, and the instruments can reflect sensible heat flux in a certain area through the measurement of microclimate parameters and the measurement of atmospheric refractive index structural constants and the like, so that the water flux and the like are estimated. Its advantages are integral measurement on regional scale and obtaining multiple hydrometeorological parameters, but the equipment needed is expensive and is not acceptable by ordinary research units. The other is a direct measurement method, which is typically represented by a high-precision lysemer system, and reflects the change of the water flux of soil through the mass change of the soil column. However, the system is generally heavy and expensive, and the bottom weighing mode cannot reflect the change of the near-surface micro water flux with accuracy, and cannot reflect the occurrence time and the occurrence depth range of the condensed water.
Disclosure of Invention
Technical problem to be solved
The embodiment of the invention aims to provide a system and a method for measuring near-surface water flux, which aim to solve the technical problems of high price and low measurement precision of a measuring device in the prior art.
(II) technical scheme
In order to solve the above technical problem, an embodiment of the present invention provides a system for measuring near-surface water flux, including: inner tube, weight detection device and humidity monitoring devices, the bottom of inner tube has the bottom plate, weight detection device locates in the empty storehouse at inner tube top, be used for detecting the change of the inside soil quality of inner tube, humidity monitoring devices is a plurality of, and follows the axial interval of inner tube sets up.
The measuring system further comprises an outer cylinder and a base, the outer cylinder is sleeved on the outer peripheral side of the inner cylinder, and the base is fixed at the bottom of the outer cylinder.
Wherein, measurement system still includes horizontal circle and many first stands, first stand vertical support in the top and the bottom of urceolus, the horizontal circle around in week side of urceolus sets up, and with first stand is perpendicular in order to with first stand is connected.
The measuring system further comprises a second upright column and a hollow upright column, the second upright column is arranged in an axial direction of the outer cylinder in a coincident mode, the hollow upright column is arranged in an axial direction of the inner cylinder in a coincident mode, the outer peripheral side of the second upright column is sleeved with the hollow upright column, and the humidity monitoring device is arranged on the outer wall of the hollow upright column.
The measuring system further comprises a fence, the diameter of the fence is 5-10 times of that of the inner cylinder, and the fence is arranged around the outer side of the inner cylinder.
The measuring system further comprises a top cover, the top cover is arranged at the top of the inner barrel and is of a hollow structure, and a top cover edge protruding vertically upwards is constructed at the edge of the top cover.
Wherein, humidity monitoring devices follows the axial equidistance setting of inner tube.
The inner cylinder and the outer cylinder are both carbon fiber mesh cylinders, and carbon nanotube coating is sprayed on the surfaces of the inner cylinder and the outer cylinder.
The measuring system further comprises an observation window, a wire and a data collector, wherein the observation window is located between the weight detection device and the humidity monitoring device, the weight detection device and the humidity monitoring device respectively pass through the wire and the data collector, and the wire penetrates through the observation window.
The embodiment of the invention also discloses a measuring method by using the near-surface water flux measuring system, which comprises the following steps:
measuring the diameter of the inner cylinder and calculating the cross-sectional area of the inner cylinder;
filling undisturbed soil in the inner cylinder, and hoisting the inner cylinder by using the weight detection device to obtain the total mass of the inner cylinder, the bottom plate and the undisturbed soil;
standing for a set time, hoisting the inner cylinder by using the weight detection device again to obtain the total mass of the inner cylinder, the bottom plate and the undisturbed soil at the moment, and calculating to obtain the mass of evaporated or condensed water of the soil within the set time;
and calculating the water flux through the cross-sectional area of the inner cylinder, the set time and the mass of the evaporated or condensed water of the soil, and monitoring the humidity values at different depth positions in the soil through the temperature detection device.
(III) advantageous effects
According to the system and the method for measuring the near-surface water flux, provided by the embodiment of the invention, the weight detection device can be used for detecting the quality of evaporated and condensed water of soil, the near-surface water flux is obtained by observing time and calculating the cross sectional area of the inner barrel, and the humidity monitoring device can be used for detecting the condensation depth of soil water vapor, so that the generation process of water vapor condensation in the soil can be accurately reflected and reproduced. The near-surface water flux measuring system has the advantages of reasonable structure, light weight, automatic recording and accurate observation.
Drawings
Fig. 1 is a schematic structural diagram of a system for measuring near-surface water flux according to an embodiment of the present invention.
Reference numerals:
1: an inner barrel; 1-1: a hollow upright post; 1-2: an observation window; 1-3: a weight detecting device; 1-4: a humidity monitoring device; 2: an outer cylinder; 2-1: a base; 2-2: a first upright post; 2-3: a second upright post; 2-4: a transverse ring; 3: a data acquisition unit; 3-1: a wire; 4: a top cover; 4-1: the edge of the top cover; 5: and (4) a fence.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1, the embodiment of the present invention discloses a system for measuring near-surface water flux, comprising: the device comprises an inner cylinder 1, a plurality of weight detection devices 1-3 and a plurality of humidity monitoring devices 1-4, wherein the bottom of the inner cylinder 1 is provided with a bottom plate, the weight detection devices 1-3 are arranged in an empty bin at the top of the inner cylinder 1 and used for detecting the change of the soil quality in the inner cylinder 1, and the humidity monitoring devices 1-4 are arranged at intervals along the axial direction of the inner cylinder 1.
Specifically, the inner cylinder 1 in the present application is a hollow cylinder, the inner diameter of which is about 20 cm, and the inner diameter of the inner cylinder 1 can be changed according to actual needs. The weight detection device 1-3 can adopt a weight sensor, and the base 2-1 and the inner cylinder 1 are slightly lifted in the measurement process, so that the problems of large occupied area and complex structure are avoided by replacing the need of a plurality of detection devices arranged at the bottom in the prior art. The humidity monitoring devices 1-4 may be resistance-type humidity sensors, which are ring-shaped and can reflect the humidity change at a certain depth position of the soil through a resistance value, specifically, when the soil humidity increases, the resistance value increases. The humidity monitoring devices 1-4 may be arranged one at each 5-10 cm height.
The weight detection device 1-3 can be a steelyard, a spring scale or an electronic scale, and the humidity monitoring device can be a soil humidity detector, a soil hygrometer or a soil moisture tachymeter.
According to the definition of water flux: mass of water per unit of membrane area per unit of time at unit pressure. The measuring system can complete the measurement of water flux, the weight change of soil can be measured by using the weight detection devices 1-3, the weight change can reflect the quality of evaporated or condensed water, the experimental time is recorded by the data collector 3 or other timing devices, the inner diameter of the inner cylinder 1 is measured by the ruler, and the cross-sectional area of the inner cylinder 1 is calculated. Since the measurement environment of the soil is generally at a standard atmospheric pressure, the pressure value is generally a known condition, and if the soil environment is at a non-standard atmospheric pressure environment, the local atmospheric pressure needs to be measured by using a barometer. Through the data, the mass of the evaporated or condensed water is divided by the cross-sectional area of the inner cylinder 1, the experimental time and the atmospheric pressure value in sequence, and then the water flux can be obtained. By means of the humidity monitoring devices 1-4 arranged at different depths, humidity changes at different depths can be detected to reproduce the water vapor condensation process in the soil.
According to the system for measuring the near-surface water flux, provided by the embodiment of the invention, the weight detection device can be used for detecting the quality of evaporated and condensed water of soil, the near-surface water flux is obtained by observing time and calculating the cross-sectional area of the inner barrel 1, and the humidity monitoring device can be used for detecting the condensation depth of soil water vapor, so that the generation process of water vapor condensation in the soil can be accurately reflected and reproduced. The near-surface water flux measuring system has the advantages of reasonable structure, light weight, automatic recording and accurate observation.
The measuring system of the embodiment further comprises an outer cylinder 2 and a base 2-1, wherein the outer cylinder 2 is sleeved on the outer peripheral side of the inner cylinder 1, the base 2-1 is fixed at the bottom of the outer cylinder 2, and the base 2-1 is annular and plays a role in fixing the outer cylinder. Preferably, the measuring system of the embodiment further comprises a transverse ring 2-4 and a plurality of first upright posts 2-2, the first upright posts 2-2 are vertically supported at the top and the bottom of the outer barrel 2, and the transverse ring 2-4 is arranged around the periphery of the outer barrel 2 and is perpendicular to the first upright posts 2-2 to connect the first upright posts 2-2. Furthermore, the inner cylinder 1 and the outer cylinder 2 are carbon fiber net cylinders, carbon nanotube coating is sprayed on the surfaces of the inner cylinder and the outer cylinder, the carbon fiber net has certain mechanical strength, the transverse rings 2-4 and the first upright columns 2-2 are arranged on the carbon fiber net cylinders, the mechanical strength of the outer cylinder 2 is further enhanced, and the structural stability of the measuring system is enhanced. And the carbon fiber net can simulate the mixed structure of the soil surface layer and the dry branch and fallen leaf layer to the maximum extent, and the carbon nanotube coating can ensure the inlet and outlet of fine sand and soil substances inside and outside the cylinder, and can also ensure that water vapor enters the soil in the inner cylinder 1 through the coating and the fiber layer, thereby ensuring the measurement accuracy.
Wherein, if the diameter of the inner cylinder 1 is 20 cm, the diameter of the outer cylinder 2 is 21-22 cm considering the wall thickness of the inner cylinder 1, and the heights of the inner cylinder 1 and the outer cylinder 2 can be set to be 20-50 cm according to the measurement requirement.
The measuring system further comprises a second upright post 2-3 and a hollow upright post 1-1, the second upright post 2-3 and the outer barrel 2 are axially overlapped, the hollow upright post 1-1 and the inner barrel 1 are axially overlapped, the hollow upright post 1-1 is sleeved on the outer peripheral side of the second upright post 2-3, and the humidity monitoring device 1-4 is arranged on the outer wall of the hollow upright post 1-1. The height of the second upright post 2-3 can be 25-55 cm, and the height of the hollow upright post 1-1 can be 27-57 cm. In the embodiment, the second upright post 2-3 and the hollow upright post 1-1 ensure that the axes of the inner barrel 1 and the outer barrel 2 are consistent, and the humidity monitoring device 1-4 is also positioned at the central position of the measured soil, so that the measurement accuracy is improved.
The measuring system also comprises a fence 5, wherein the diameter of the fence 5 is 5-10 times of that of the inner cylinder 1, and the fence 5 is arranged around the outer side of the inner cylinder 1. The fence 5 in the embodiment has the functions of preventing wind sand and foreign matters on the surrounding ground surface from entering a weighing area of the inner cylinder 1 and not influencing the change of a wind field, and has the diameter 5-10 times of that of the inner cylinder 1 and the height 20-40 cm.
The measuring system further comprises a top cover 4, the top cover 4 is arranged at the top of the inner barrel 1, the top cover 4 is of a hollow structure, a top cover edge 4-1 protruding vertically upwards is constructed at the edge of the top cover 4, the height of the outer wall is 0.3-0.5 cm, and the influence of wind power and external dust on measuring accuracy is avoided.
The humidity monitoring devices 1-4 are arranged along the axial direction of the inner barrel 1 at equal intervals, four humidity monitoring devices 1-4 can be arranged according to experimental requirements, and the height distance between every two adjacent humidity monitoring devices 1-4 is 4-10 cm.
The measuring system of the embodiment further comprises an observation window 1-2, a lead 3-1 and a data collector 3, wherein the observation window 1-2 is positioned on the hollow upright post 1-1 between the weight detection device 1-3 and the humidity monitoring device 1-4, the weight detection device 1-3 and the humidity monitoring device 1-4 are respectively connected with the data collector 3 through the lead 3-1, and the lead 3-1 penetrates through the observation window 1-2. In this embodiment, the data collector 3 or other data processing device is used to collect and process the weight data and the humidity data, the data collector 3 in this embodiment further has a timing function, and can record the experiment time, and the operator can read and display the readings and the experiment time of the weight detecting devices 1 to 3 and the humidity monitoring devices 1 to 4 through the data collector 3. The embodiment can be led out by operating the conducting wire through the observation window 1-2, and can also observe whether the circuits of the weight detection device 1-3 and the humidity monitoring device 1-4 are normal or not, so that the detection and maintenance are convenient.
The embodiment of the invention also discloses a measuring method of the near-surface water flux measuring system by utilizing the embodiment, which comprises the following steps:
measuring the diameter of the inner cylinder 1 and calculating the cross-sectional area S;
filling the inner cylinder 1 with undisturbed soil, and hoisting the inner cylinder 1 by using the weight detection device 1-3 to obtain the total mass m of the inner cylinder 1, the bottom plate and the undisturbed soil1；
Standing setting time t1The inner cylinder 1 is hoisted by the weight detection device 1-3 again to obtain the total mass m of the inner cylinder 1, the bottom plate and the undisturbed soil at the moment2And use of m2And m1Making a difference to obtain at t1Mass m of evaporated or condensed water of the soil over time;
passing through the cross-sectional area S of the inner cylinder 1 for a set time t1And the mass m of the evaporated or condensed water of the soil, and monitoring the humidity values at different depth positions in the soil by the temperature detection devices 1-4.
From the known local atmospheric pressure P and the measured data:
before the experiment is started, a hole is dug in a preset position by the diameter and the height of the outer cylinder 2 to be vertical to the ground, the outer cylinder 2 is placed in the hole, the hole and the outer cylinder 2 are kept in horizontal consistency, then the outer cylinder 2, the base 2-1, the inner cylinder 1 and the like are placed in the hole, and the base 2-1 is guaranteed to be horizontal.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A near-surface water flux measurement system, comprising: inner tube, weight detection device and humidity monitoring devices, the bottom of inner tube has the bottom plate, weight detection device locates in the empty storehouse at inner tube top, be used for detecting the change of the inside soil quality of inner tube, humidity monitoring devices is a plurality of, and follows the axial interval of inner tube sets up.
2. The system for measuring near-surface water flux according to claim 1, further comprising an outer cylinder and a base, wherein the outer cylinder is sleeved on the outer peripheral side of the inner cylinder, and the base is fixed at the bottom of the outer cylinder.
3. The system of claim 2, further comprising a cross-ring and a plurality of first posts, the first posts being vertically supported at the top and bottom of the tub, the cross-ring being disposed around the circumference of the tub and perpendicular to the first posts to connect the first posts.
4. The system for measuring near-surface water flux according to claim 2, further comprising a second upright column and a hollow upright column, wherein the second upright column is arranged to coincide with the axial direction of the outer cylinder, the hollow upright column is arranged to coincide with the axial direction of the inner cylinder, the hollow upright column is sleeved on the outer peripheral side of the second upright column, and the humidity monitoring device is arranged on the outer wall of the hollow upright column.
5. The system of claim 1, further comprising a barrier having a diameter 5-10 times the diameter of the inner barrel and disposed around the outside of the inner barrel.
6. The system for measuring near-surface water flux according to claim 1, further comprising a top cover, wherein the top cover is arranged on the top of the inner barrel, the top cover is of a hollow structure, and a top cover edge protruding vertically upwards is configured on the edge of the top cover.
7. The system of claim 1, wherein the moisture monitoring devices are positioned equidistant along the axial direction of the inner barrel.
8. The system for measuring near-surface water flux according to claim 2, wherein the inner cylinder and the outer cylinder are both carbon fiber mesh cylinders, and carbon nanotube coating is sprayed on the surface.
9. The system for measuring near-surface water flux according to claim 4, further comprising an observation window, a wire and a data collector, wherein the observation window is located on the hollow upright column between the weight detection device and the humidity monitoring device, the weight detection device and the humidity monitoring device are respectively connected with the data collector through the wire, and the wire passes through the observation window.
10. A method of measurement using the near surface water flux measurement system of any one of claims 1-9, comprising:
measuring the diameter of the inner cylinder and calculating the cross-sectional area of the inner cylinder;
filling undisturbed soil in the inner cylinder, and hoisting the inner cylinder by using the weight detection device to obtain the total mass of the inner cylinder, the bottom plate and the undisturbed soil;
standing for a set time, hoisting the inner cylinder by using the weight detection device again to obtain the total mass of the inner cylinder, the bottom plate and the undisturbed soil at the moment, and calculating to obtain the mass of evaporated or condensed water of the soil within the set time;
and calculating the water flux through the cross-sectional area of the inner cylinder, the set time and the mass of the evaporated or condensed water of the soil, and monitoring the humidity values at different depth positions in the soil through the temperature detection device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911361309.2A CN110940607B (en) | 2019-12-25 | 2019-12-25 | Near-surface water flux measuring system and measuring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911361309.2A CN110940607B (en) | 2019-12-25 | 2019-12-25 | Near-surface water flux measuring system and measuring method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110940607A true CN110940607A (en) | 2020-03-31 |
| CN110940607B CN110940607B (en) | 2024-06-11 |
Family
ID=69912472
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911361309.2A Active CN110940607B (en) | 2019-12-25 | 2019-12-25 | Near-surface water flux measuring system and measuring method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110940607B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109378A (en) * | 2021-04-06 | 2021-07-13 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Steep rock surface water vapor condensation monitoring method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030140690A1 (en) * | 2002-01-29 | 2003-07-31 | Faybishenko Boris A. | Vadose zone water fluxmeter |
| CN102478476A (en) * | 2010-11-25 | 2012-05-30 | 中国林业科学研究院林业研究所 | Device and method for acquiring soil evaporation information |
| CN103091197A (en) * | 2013-01-15 | 2013-05-08 | 甘肃省气象局 | Weighing steam infiltration meter |
| CN104266926A (en) * | 2014-09-19 | 2015-01-07 | 西北农林科技大学 | Vaporous soil water acquisition measurement system |
| CN104596882A (en) * | 2014-12-29 | 2015-05-06 | 北京林业大学 | Device for determining atmospheric condensed water |
-
2019
- 2019-12-25 CN CN201911361309.2A patent/CN110940607B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030140690A1 (en) * | 2002-01-29 | 2003-07-31 | Faybishenko Boris A. | Vadose zone water fluxmeter |
| CN102478476A (en) * | 2010-11-25 | 2012-05-30 | 中国林业科学研究院林业研究所 | Device and method for acquiring soil evaporation information |
| CN103091197A (en) * | 2013-01-15 | 2013-05-08 | 甘肃省气象局 | Weighing steam infiltration meter |
| CN104266926A (en) * | 2014-09-19 | 2015-01-07 | 西北农林科技大学 | Vaporous soil water acquisition measurement system |
| CN104596882A (en) * | 2014-12-29 | 2015-05-06 | 北京林业大学 | Device for determining atmospheric condensed water |
Non-Patent Citations (1)
| Title |
|---|
| 范敬龙: "塔克拉玛干沙漠南部地下水化学演化模拟", 《中国沙漠》, 31 December 2016 (2016-12-31) * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113109378A (en) * | 2021-04-06 | 2021-07-13 | 山东省鲁南地质工程勘察院(山东省地勘局第二地质大队) | Steep rock surface water vapor condensation monitoring method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110940607B (en) | 2024-06-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105571758B (en) | The dilatometer of constant volume method measurement expansive force | |
| CN105526909B (en) | A kind of sedimentation detection method and device based on image recognition principle | |
| Ritchie et al. | A Precision Weighing Lysimeter for Row Crop Water Use Studies 1 | |
| US20110161008A1 (en) | Land settlement measuring apparatus and system | |
| CN105259592B (en) | High accuracy zero-initial-length spring temperature drift and the detector of long-term creep | |
| CN104111205A (en) | Digital multichannel acquisition instrument of plant moisture evaporation and soil leakage | |
| CN107727483A (en) | A kind of injection shear and method for being used for ground in-situ test based on fiber grating | |
| CN110426337A (en) | Rock And Soil seepage deformation test device and its test method under low-stress | |
| CN203275228U (en) | Collector for plant water evaporation and soil percolation | |
| CN202793533U (en) | Riverway water gauge | |
| CN110940607B (en) | Near-surface water flux measuring system and measuring method | |
| CN106092843A (en) | A kind of PM2.5 real-time detecting system based on Fibre Optical Sensor | |
| CN211669000U (en) | Near-surface water flux measuring system | |
| CN105371821B (en) | A kind of wind driven generator base slant detection method based on obliquity sensor | |
| CN205642305U (en) | Detect hoist camber's device | |
| CN203337650U (en) | Soil moisture measuring device | |
| AU2021105250A4 (en) | Measuring system and method for near-surface water flux | |
| CN109556755A (en) | A kind of humiture measurement mechanism in brewery's ferment pond | |
| CN103063382B (en) | A kind of amount of deflection self-operated measuring unit and measuring method thereof | |
| CN205748363U (en) | A kind of distributed fiber grating inclination measurement device | |
| CN107132146B (en) | Four-channel lysimeter | |
| CN110411549A (en) | A kind of multichannel crops evaporation remote gathering system | |
| CN206430790U (en) | A kind of pressure type water gauge time drift detection means | |
| CN104483237B (en) | Multi-sample blood pressure product measuring method and device based on transmissivity changing | |
| CN211696498U (en) | A isolated plant that patrols and examines for protection of ancient building historical relics |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |