CN109115104A - A kind of measuring method based on magnetic susceptibility measurement soil horizon thickness - Google Patents
A kind of measuring method based on magnetic susceptibility measurement soil horizon thickness Download PDFInfo
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- CN109115104A CN109115104A CN201811237407.0A CN201811237407A CN109115104A CN 109115104 A CN109115104 A CN 109115104A CN 201811237407 A CN201811237407 A CN 201811237407A CN 109115104 A CN109115104 A CN 109115104A
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- 239000002689 soil Substances 0.000 title claims abstract description 136
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000005404 magnetometry Methods 0.000 title claims abstract description 18
- 238000005259 measurement Methods 0.000 claims abstract description 45
- 238000005070 sampling Methods 0.000 claims abstract description 39
- 238000012546 transfer Methods 0.000 claims abstract description 14
- 230000005415 magnetization Effects 0.000 claims abstract description 13
- 239000000523 sample Substances 0.000 claims description 17
- 239000000126 substance Substances 0.000 claims description 7
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 abstract description 17
- 238000011160 research Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000004162 soil erosion Methods 0.000 description 15
- 230000003628 erosive effect Effects 0.000 description 9
- 238000009412 basement excavation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003971 tillage Methods 0.000 description 2
- 239000004568 cement Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/02—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness
- G01B7/06—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness
- G01B7/10—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring length, width or thickness for measuring thickness using magnetic means, e.g. by measuring change of reluctance
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B47/00—Soil-working with electric potential applied between tools and soil
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
- A01B76/00—Parts, details or accessories of agricultural machines or implements, not provided for in groups A01B51/00 - A01B75/00
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/20—Securing of slopes or inclines
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- General Physics & Mathematics (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Soil Sciences (AREA)
- Analytical Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Geophysics And Detection Of Objects (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
This application provides a kind of measuring methods based on magnetic susceptibility measurement soil horizon thickness, are related to soil loss monitoring technical field.It include: the original magnetization rate K for measuring sampling point surface soil layerb；Measurement magnetic part is placed in the maximum magnetic susceptibility K of topsoilm；Predetermined depth below sampling point soil buries magnetic part, forms magnetosphere；Measure the first magnetic susceptibility K of topsoil right above magnetosphere1；After being spaced preset time, the second magnetic susceptibility K of topsoil right above measurement magnetosphere2；According to the transfer equation of soil horizon magnetic susceptibility and soil horizon thickness, soil horizon change value of thickness is calculated.Measuring method provided by the present application based on magnetic susceptibility measurement soil horizon thickness; minimum or undisturbed is disturbed to sampling point soil horizon; measurement result can fast, accurately be obtained; without any special manual maintenance; sampling point soil horizon representativeness is good, has stronger practicability in physical geography, soil loss monitoring scientific research and field monitoring work.
Description
Technical field
This application involves soil loss monitoring technical fields more particularly to a kind of based on magnetic susceptibility measurement soil horizon thickness
Measuring method.
Background technique
The soil erosion is a kind of serious soil degradation process, restricts holding for worldwide agricultural soil resource
It is continuous to utilize.The basic principle of soil erosion measurement is directly or indirectly to monitor under different time and space scales because the soil erosion causes
Soil horizon thickness dynamic change.The process of the soil erosion is sufficiently complex, this process is often not easy to carry out quantification monitoring.Make
Method directly to measure soil erosion amount corrodes the skill of handling needles by measurement and corrodes the distance between needle top and soil surface, comes
Measure the surface soil earth thickness degree amount of increasing or decreasing after topsoil is lost or accumulates.It refers specifically to, in field perpendicular to soil table
Face is inserted into an erosion needle, is usually made of metal, scleroid straight minute hand.With the generation of phenomenon of soil erosion,
The soil of monitoring point where corroding needle can be lost or accumulate, and correspondingly, soil horizon thickness, which can change, (or to be reduced or increase
Add).Therefore, before and after erosion generation, the vertical range for corroding needle to earth's surface is measured respectively using depth measuring ruler.Two
The difference of vertical range acquired in secondary measurement is the variable quantity of corresponding soil horizon thickness.
Specific measurement process to corrode the skill of handling needles as shown in Figure 1.It include: (1) with selecting sample soil profile；(2) it lays
Corrode needle；(3) measurement washer is placed before surveying as the measurement plane of reference；(4) using depth measuring ruler measurement from corrode needle it is exposed
Vertical distance of the outer end to measurement washer upper end；(5) difference than measuring vertical distance twice is sampling point soil horizon thickness
Variable quantity, directly react the soil erosion of the point or the soil horizon amounts of thickness variation after accumulation.
Although corroding the skill of handling needles using relatively broad, it need to be locally embedded in soil horizon due to corroding needle, exposed portion
Branch generates disturbance to the flow regime of empty gas and water, apparent soil loss amount deviation occurs so as to cause monitoring sampling point position,
With corroding, the time that needle is stood in field is more long, this error is bigger.In addition, exposed erosion needle part, it is easy to
By activity, other activities naturally of the interference of external environment, such as animal and people, so that corroding skill of handling needles measurement failure.
Summary of the invention
This application provides a kind of measuring methods based on magnetic susceptibility measurement soil horizon thickness, to solve prior art soil
It corrodes and measures the problems such as work can not effectively be carried out, measured deviation is big.
A kind of measuring method based on magnetic susceptibility measurement soil horizon thickness, comprising:
The original magnetization rate K of S1 measurement sampling point surface soil layerb；
S2 measurement magnetic part is placed in the maximum magnetic susceptibility K of the topsoilm；
Predetermined depth of the S3 below the sampling point soil buries the magnetic part, forms magnetosphere；
S4 measures the first magnetic susceptibility K of the topsoil right above the magnetosphere1；
After the preset time of the interval S5, the second magnetic susceptibility K of the topsoil right above the magnetosphere is measured2；
S6 calculates soil horizon change value of thickness according to the transfer equation of soil horizon magnetic susceptibility and soil horizon thickness.
Optionally, in step s 6, the transfer equation are as follows:
H=202.68-93.46eK*/(-0.0067)-58.69eK*/(-0.0503)-54.80eK*/(0.3371)
Wherein, K*Calculation formula are as follows:
In formula, H is the distance that probe arrives the magnetosphere, mm；K*For comprehensive substance magnetic susceptibility, dimensionless；KbFor original magnetization
Rate, dimensionless；KmFor maximum magnetic susceptibility, dimensionless；K is the substance magnetic susceptibility of the probe measurement, dimensionless.
Optionally, the magnetic intensity range of the magnetic part is 6000-10000, and the thickness range of the magnetic part is
0.5-1.5cm, the magnetic part depth of burying are less than or equal to 20cm.
Optionally, in step s3, burying the magnetic part includes: that excavation and filling lays magnetic part or section laying magnetic part.
The technical scheme provided by the application includes following advantageous effects:
Compared with prior art, this application provides a kind of measuring method based on magnetic susceptibility measurement soil horizon thickness, packets
It includes: the original magnetization rate K of measurement sampling point surface soil layerb；Measurement magnetic part is placed in the maximum magnetic susceptibility K of topsoilm；In sampling point
Predetermined depth below soil buries magnetic part, forms magnetosphere；Measure the first magnetic susceptibility K of topsoil right above magnetosphere1；Interval
After preset time, the second magnetic susceptibility K of topsoil right above measurement magnetosphere2；According to soil horizon magnetic susceptibility and soil horizon thickness
Transfer equation calculates soil horizon change value of thickness.The application lays a special artificial magnetic part in implementation process,
Front and back occurs for the soil erosion, measures the magnetic susceptibility of the topsoil right above magnetosphere respectively using magnetic susceptibility instrument probe, passes through soil
The transfer equation of earth layer magnetic susceptibility and soil horizon thickness obtains the soil horizon thickness parameter between magnetosphere and probe, measures twice
The difference of acquired soil horizon thickness value just reflects erosion or the accumulating amount of the sampling point soil horizon.Base provided by the present application
In the measuring method of magnetic susceptibility measurement soil horizon thickness, minimum or undisturbed is disturbed to sampling point soil horizon, using magnetic susceptibility instrument
Measurement result can be fast, accurately obtained, and since magnetic part is embedded in inside soil horizon, surface soil layer will not be generated
Interference is not necessarily to any special manual maintenance in subsequent measurement cycles.In addition, equipment cost needed for measuring is low, it is durable,
The measurement range of probe is big, so that sampling point soil horizon is more representative, in physical geography, soil loss monitoring scientific research
There is stronger practicability with field monitoring work.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the application, letter will be made to attached drawing needed in the embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without any creative labor,
It is also possible to obtain other drawings based on these drawings.
Fig. 1 is the schematic illustration that the erosion skill of handling needles provided by the embodiments of the present application measures soil horizon thickness.
Fig. 2 is a kind of process step of measuring method based on magnetic susceptibility measurement soil horizon thickness provided by the embodiments of the present application
Rapid figure.
Fig. 3 is the schematic illustration of magnetic susceptibility Instrument measuring magnetosphere provided by the embodiments of the present application.
Specific embodiment
Attached drawing 2 is please referred to, the figure shows provided by the embodiments of the present application a kind of based on magnetic susceptibility measurement soil horizon thickness
Measuring method process step.
A kind of measuring method based on magnetic susceptibility measurement soil horizon thickness, can be also simply referred to as magnetosphere detection method, be fusion
The soil of magnetic susceptibility measurement technology, Common materials magnetic contrasts, three aspect of soil erosion regular in geophysics's research
The method for fast measuring of thickness degree, specifically includes:
Step S1: the original magnetization rate K of measurement sampling point surface soil layerb。
Before formal measurement, using magnetic susceptibility instrument first to the original magnetization rate K of sampling point surface soil layerbIt is surveyed
It is fixed, original magnetization rate KbAlso referred to as background topsoil magnetic susceptibility (K-background, abbreviation Kb)。
Step S2: measurement magnetic part is placed in the maximum magnetic susceptibility K of topsoilm。
Magnetic part with certain shapes structure is placed on soil horizon upper surface, with the magnetic susceptibility Instrument measuring magnetism
Part, the spacing of magnetic part and probe is zero at this time, can obtain maximum magnetic susceptibility Km(K-maximum, abbreviation Km)。
Step S3: the predetermined depth below sampling point soil buries magnetic part, forms magnetosphere.
Magnetic part is embedded in below sampling point soil, forms magnetosphere, and in this, as the plane of reference, the thereon magnetization of topsoil
Rate and soil profile are with a thickness of one-to-one relationship, and when soil profile thickness is smaller, the distance of probe to magnetosphere is smaller, topsoil
Magnetic susceptibility it is bigger.Thus, the thickness of soil profile can be calculated by the numerical value of magnetic susceptibility.
Step S4: the first magnetic susceptibility K of topsoil right above measurement magnetosphere1。
As shown in figure 3, being the principle process of magnetic susceptibility Instrument measuring magnetosphere.The variation of soil layer thickness value embodies twice
The loss or accumulation of soil horizon.First magnetic susceptibility K herein1After finger has buried magnetic part, using magnetic susceptibility instrument in soil horizon
It corrodes before occurring, records the magnetic susceptibility of a topsoil, i.e. the first magnetic susceptibility K first1, other within the subsequent measurements period
Magnetize rate score and K1It is compared, is calculated in different time sections, the situation of change of soil horizon thickness at this.
Step S5: after the preset time of interval, the second magnetic susceptibility K of topsoil right above measurement magnetosphere2。
Second magnetic susceptibility K herein2The Magnetisability determination of the topsoil carried out in the specially periodical sampling point measurement stage.Root
According to actual needs, measurement frequency is determined, such as fully consider environmental factor, the special weathers such as dust storm, heavy rain, irregularly to sampling point soil
The magnetic susceptibility of earth topsoil is measured, or the interval fixed cycle is measured.
Step S6: according to the transfer equation of soil horizon magnetic susceptibility and soil horizon thickness, soil horizon change value of thickness is calculated.
Soil horizon magnetic susceptibility and soil horizon thickness relationship can be expressed with an accurate exponential type curve, and the exponential type is bent
Line may be summarized to be a transfer equation, and variable involved in the transfer equation includes Kb、KmAnd table after embedded magnetic part
The magnetic susceptibility of soil layer, specially K1Or K2。
In measuring method provided by the embodiments of the present application, magnetic susceptibility instrument is using UK corporation bar front yard (Bartington)
The MS2/ magnetic susceptibility meter of production, specially MS2D power supply and reading table, MS2D surface scan probe, MS2D handle；In magnetic part
Containing magnetite powder, cement, fine sand etc., by mixing coagulation forming.Specific implementation process are as follows: selected sampling point soil, and survey
The original magnetization rate K of the fixed sampling point soilb；The characteristics of according to sampling point soil, reasonable magnetic part is made, the magnetic including magnetic part
Property intensity, size, quantity, after magnetic part to be placed on to the upper surface of sampling point soil, measure maximum magnetic susceptibility Km；According to
The characteristics of sampling point soil, selects suitable mode that magnetic part is embedded in the predetermined depth of sampling point soil, and the depth and MS2D are visited
Head investigative range matches, i.e., guarantee MS2D probe can detect, and magnetic susceptibility is shown on reading table, the first magnetization of measurement
Rate K1；According to actual needs, determine that measurement frequency, all magnetic susceptibility that subsequent measurements measure are referred to as the second magnetic susceptibility K2；It will
Kb、Km、K1、K2It substitutes into transfer equation, obtained thickness difference, the as variable quantity of soil horizon thickness, can reflect default
In time, the degree of soil horizon erosion.
Measuring method provided by the embodiments of the present application based on magnetic susceptibility measurement soil horizon thickness, has the advantage that (1)
Single soil horizon thickness measurement only needs 1-2 seconds.Used magnetic susceptibility instrument is a high-quality, portable instrument, is surveying
During fixed, it can be made instantly available determination data, time-consuming is only 1-2 seconds.(2) measurement accuracy can control within 2mm.(3) right
Sampling point soil almost no longer disturbs, because undergoing the soil horizon disturbed on a small quantity that can obtain under field conditions (factors) after embedded magnetic part
Restore to sufficient, reaches reset condition again.(4) non-maintaining.Since magnetic part, magnetic susceptibility instrument are that durable type is set
Standby, especially magnetic part does not need to carry out any manual maintenance after laying.Thus within the entirely measurement period, almost it is not required to
Equipment is safeguarded.(5) sampling point representativeness is good.The probe that the embodiment of the present application uses is the survey of a planar for circular ring shape
Determine range, measures radius in 15cm or so, and magnetic part is embedded in soil horizon, soil horizon undisturbed is acted on, do not will cause
The deviation of measurement.(6) cost of manufacture of magnetic part, the acquisition cost of magnetic susceptibility instrument are lower, so that implementing the application implementation
The gross investment for the measuring method that example provides is smaller.
Measuring method provided by the embodiments of the present application based on magnetic susceptibility measurement soil horizon thickness, can be applied to soil resource
In protection, soil loss monitoring scientific research and field monitoring work.Specifically, measuring method provided by the embodiments of the present application can
Apply interior in (1) based on water erosion, field soil erosion experiment cell soil loss amount or accumulating amount quick measurement.
(2) in the long-term tillage monitoring of the soil loss amount or accumulating amount in the soil erosion field environment based on water erosion.(3) base
Soil loss amount in the soil erosion field environment of wind erosion or in the long-term tillage monitoring of accumulating amount.
Measuring method provided by the embodiments of the present application is particularly suitable for carrying out soil erosion study and monitoring work in remote districts
To the quick measurement of soil loss amount and accumulating amount when making.
Optionally, in step s 6, transfer equation are as follows:
H=202.68-93.46eK*/(-0.0067)-58.69eK*/(-0.0503)-54.80eK*/(0.3371)
Wherein, K*Calculation formula are as follows:
In formula, H is the distance that probe arrives magnetosphere, mm；K*For comprehensive substance magnetic susceptibility, dimensionless；KbFor original magnetization rate,
Dimensionless；KmFor maximum magnetic susceptibility, dimensionless；K is the substance magnetic susceptibility of probe measurement, dimensionless.
In formula, the substance magnetic susceptibility that K is represented specifically refers to K1、K2, pass through K in transfer equation1、K2The H being calculated1、H2
Difference DELTA H be exactly the sampling point soil after preset time change value of thickness, the number of dropouts or heap of sampling point soil can be reacted
Accumulated amount.
Optionally, the magnetic intensity range of magnetic part is 6000-10000, and the thickness range of magnetic part is 0.5-1.5cm,
The magnetic part depth of burying is less than or equal to 20cm.
Measuring method provided by the embodiments of the present application based on magnetic susceptibility measurement soil horizon thickness, the magnetic intensity of magnetic part
Range is 6000-10000, and the area coverage of magnetic part is determined according to the characteristics of sampling point soil, and the shape of magnetic part can be
Round pie, plate, netted or other stratiform regular shapes, thickness range 0.5-1.5cm, preferably 1.0cm are embedded in sampling point soil
The depth of earth is no more than 20cm, to guarantee that magnetosphere can be arrived by probe detection.
Optionally, in step s3, embedded magnetic part includes: that excavation and filling lays magnetic part or section laying magnetic part.
More particularly suitable embedding manner is selected to bury magnetic part, such as field soil, sandy soil layer has breakable spy
Point, preferably use excavation and filling lay mode, in the construction process, after being excavated to sampling point soil, bury magnetic part, make magnetic part with
Native soil layer upper surface is parallel, is thereafter covered magnetic part with native soil, under field conditions (factors) due to chiltern soil layer, can quickly,
It is thus capable of sufficiently recovering reset condition, therefore, excavation and filling is laid it is believed that initial soil layer undisturbed, will not influence measurement result.
For cell (soil erosion hillslope processes, abbreviation cell), it can also be used and excavate laying mode.
For loamy texture soil layer, there is certain concreteness, section can be used and lay mode, in the construction process, sample point
Soil near soil is excavated, if the range of sampling point soil is 30cm × 30cm, then arbitrarily close to sampling point soil range
One piece of side wall is dug out in side, using the side wall as bottom surface, towards sampling point soil and be parallel to soil upper surface excavate have certain thickness
Magnetic part, is then placed in one by the hole that degree, size and magnetic part match, in this way, to the complete undisturbed of sampling point soil, energy
Access very accurate soil horizon amounts of thickness variation.
Measuring method provided by the embodiments of the present application based on magnetic susceptibility measurement soil horizon thickness, by inside soil horizon
Embedded magnetosphere, and by soil horizon magnetic susceptibility and soil horizon thickness transfer equation, it can fast, accurately obtain the change of soil horizon thickness
Change amount, for this method to initial soil undisturbed, sampling point soil representativeness is good, pays within the measurement period without maintenance cost, and real
The fixed equipment investment of testing is few, physical geography, soil loss monitoring scientific research and field monitoring work in have compared with
Good practicability is particularly suitable for when soil erosion study measurement, soil horizon monitoring are carried out in remote districts to soil losses
The rapid survey of amount and accumulating amount.
It should be noted that the relational terms of such as " first " and " second " or the like be used merely to an entity or
Operation is distinguished with another entity or operation, and without necessarily requiring or implying between these entities or operation, there are any
This actual relationship or sequence.Moreover, the terms "include", "comprise" or its any other variant be intended to it is non-exclusive
Property include so that including the article of a series of elements or equipment not only includes those elements, but also including not having
The other element being expressly recited, or further include for elements inherent to such a process, method, article, or device.Do not having
There is the element limited in the case where more limiting by sentence "including a ...", it is not excluded that in the mistake including the element
There is also other identical elements in journey, method, article or equipment.
The above is only the specific embodiment of the application, is made skilled artisans appreciate that or realizing this Shen
Please.Various modifications to these embodiments will be apparent to one skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
It should be understood that the application is not limited to the content being described above, and its model can not departed from
It encloses and carry out various modifications and change.Scope of the present application is only limited by the accompanying claims.
Claims (4)
1. a kind of measuring method based on magnetic susceptibility measurement soil horizon thickness characterized by comprising
The original magnetization rate K of S1 measurement sampling point surface soil layerb；
S2 measurement magnetic part is placed in the maximum magnetic susceptibility K of the topsoilm；
Predetermined depth of the S3 below the sampling point soil buries the magnetic part, forms magnetosphere；
S4 measures the first magnetic susceptibility K of the topsoil right above the magnetosphere1；
After the preset time of the interval S5, the second magnetic susceptibility K of the topsoil right above the magnetosphere is measured2；
S6 calculates soil horizon change value of thickness according to the transfer equation of soil horizon magnetic susceptibility and soil horizon thickness.
2. measuring method according to claim 1, which is characterized in that in step s 6, the transfer equation are as follows:
Wherein, K*Calculation formula are as follows:
In formula, H is the distance that probe arrives the magnetosphere, mm；K*For comprehensive substance magnetic susceptibility, dimensionless；KbFor original magnetization rate,
Dimensionless；KmFor maximum magnetic susceptibility, dimensionless；K is the substance magnetic susceptibility of the probe measurement, dimensionless.
3. measuring method according to claim 1, which is characterized in that the magnetic intensity range of the magnetic part is 6000-
10000, the thickness range of the magnetic part is 0.5-1.5cm, and the magnetic part depth of burying is less than or equal to 20cm.
4. measuring method according to claim 1, which is characterized in that in step s3, burying the magnetic part includes: to dig
It fills out and lays magnetic part or section laying magnetic part.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237407.0A CN109115104B (en) | 2018-10-23 | 2018-10-23 | Determination method for measuring thickness of soil layer based on magnetic susceptibility |
| PCT/CN2018/116403 WO2020082475A1 (en) | 2018-10-23 | 2018-11-20 | Measurement method for measuring thickness of soil layer based on magnetic susceptibility |
| GB2003689.3A GB2583409B (en) | 2018-10-23 | 2018-11-20 | Measuring soil erosion or deposition using magnetic susceptibility |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811237407.0A CN109115104B (en) | 2018-10-23 | 2018-10-23 | Determination method for measuring thickness of soil layer based on magnetic susceptibility |
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| CN109115104A true CN109115104A (en) | 2019-01-01 |
| CN109115104B CN109115104B (en) | 2020-04-14 |
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| CN201811237407.0A Expired - Fee Related CN109115104B (en) | 2018-10-23 | 2018-10-23 | Determination method for measuring thickness of soil layer based on magnetic susceptibility |
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| Country | Link |
|---|---|
| CN (1) | CN109115104B (en) |
| GB (1) | GB2583409B (en) |
| WO (1) | WO2020082475A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114111553A (en) * | 2021-11-25 | 2022-03-01 | 安徽理工大学 | Method for rapidly acquiring thickness of reconstructed soil filling layer of newly-increased farmland |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115480046A (en) * | 2022-10-11 | 2022-12-16 | 中国科学院地理科学与资源研究所 | Estimation method for predicting soil carbon reserves based on loess thickness |
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2018
- 2018-10-23 CN CN201811237407.0A patent/CN109115104B/en not_active Expired - Fee Related
- 2018-11-20 WO PCT/CN2018/116403 patent/WO2020082475A1/en active Application Filing
- 2018-11-20 GB GB2003689.3A patent/GB2583409B/en not_active Expired - Fee Related
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| EP1148351A1 (en) * | 2000-04-20 | 2001-10-24 | Wolfgang Rösler | Method and device for recording the magnetic susceptibility of soils and/or sediments |
| CN101603946A (en) * | 2009-07-14 | 2009-12-16 | 中国科学院水利部成都山地灾害与环境研究所 | Tillage erosion measurement magnetism tracer method |
| CN203349778U (en) * | 2013-03-27 | 2013-12-18 | 苏州江南航天机电工业有限公司 | Device for detecting thickness of pouring coverage layer |
| CN206177194U (en) * | 2016-11-24 | 2017-05-17 | 辽宁省水土保持研究所 | Surface soil erosion thickness measuring instrument |
| CN106767371A (en) * | 2016-12-27 | 2017-05-31 | 山东农业大学 | A kind of method that GPR quick detection Reclaimed Soil covers table soil thickness |
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| 张亚丽 等: "秸秆覆盖对农田土壤磁化率测量结果的影响", 《华南农业大学学报》 * |
| 胡国庆: " 土壤侵蚀磁性示踪剂两种布设方式下示踪效果的研究", 《水土保持学报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114111553A (en) * | 2021-11-25 | 2022-03-01 | 安徽理工大学 | Method for rapidly acquiring thickness of reconstructed soil filling layer of newly-increased farmland |
| CN114111553B (en) * | 2021-11-25 | 2023-12-08 | 安徽理工大学 | Method for rapidly obtaining thickness of newly-increased farmland reconstructed soil body filling layer |
Also Published As
| Publication number | Publication date |
|---|---|
| GB2583409B (en) | 2023-02-08 |
| CN109115104B (en) | 2020-04-14 |
| WO2020082475A1 (en) | 2020-04-30 |
| GB2583409A (en) | 2020-10-28 |
| GB202003689D0 (en) | 2020-04-29 |
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