CN106248740B - A kind of soil resistivity humidity correcting method - Google Patents
A kind of soil resistivity humidity correcting method Download PDFInfo
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- CN106248740B CN106248740B CN201610765879.8A CN201610765879A CN106248740B CN 106248740 B CN106248740 B CN 106248740B CN 201610765879 A CN201610765879 A CN 201610765879A CN 106248740 B CN106248740 B CN 106248740B
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- 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
- G01N27/043—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a granular material
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R35/00—Testing or calibrating of apparatus covered by the other groups of this subclass
- G01R35/005—Calibrating; Standards or reference devices, e.g. voltage or resistance standards, "golden" references
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Abstract
The invention discloses a kind of soil resistivity humidity correcting methods, comprising the following steps: in field acquisition soil sampling, measures corresponding resistivity value under its real-time humidity and the humidity；The ingredient of sample is identified, confirms that it is under the jurisdiction of clay, silt or sand；It is corrected according to the ingredient of sample in conjunction with its real-time humidity and real time resistance rate value, the soil resistivity value of sample under target humidity is calculated.The present invention can be corrected fieldwork resistivity, obtain corresponding resistivity under specified moisture content (humidity), so that the accuracy of measured resistivity greatly improves, so as to which preferably soil resistivity is applied in the work such as earthing test, detail design.
Description
Technical field
The present invention relates to a kind of soil resistivity humidity correcting methods.
Background technique
Soil resistivity will have a direct impact on step voltage in the earth, surface potential, current distribution and earthing pole fever, and
And it can change with the variation of water content.Humidity correcting can effectively reduce and lead with external factor such as weather, period, seasons
It causes the variation of test section humidity and the variation of apparent resistivity test value is caused to interfere, and improve the precision of resistivity method physical prospecting test.
Domestic and foreign scholars are exploring always the relationship of soil resistivity and moisture content, and many articles have carried out deep spy to conductive mechanism
It begs for, also some scientist has carried out relevant experiment for this problem and obtained the resistivity of certain soil with soil
The variation relation of humidity, but for their analysis is only for this rule, there is no this is tested resulting rule
Rule is applied in reality, and more nobody has for humidity is relevant to the proposition of three kinds of soil (clay, silt, sand) resistivity
Targetedly bearing calibration.
Summary of the invention
The present invention to solve the above-mentioned problems, proposes a kind of soil resistivity humidity correcting method, and this method can be to electricity
The size of the resistivity of three kinds of soil (clay, silt, sand) in method exploration under different humidity is corrected specified humidity
Corresponding resistivity value size, to reduce influence of the humidity to soil resistivity measured value, thus obtain being more favorable for using with
The soil resistivity value compared.
To achieve the goals above, the present invention adopts the following technical scheme:
A kind of soil resistivity humidity correcting method, comprising the following steps:
(1) in field acquisition soil sampling, corresponding resistivity value under its real-time humidity and the humidity is measured；
(2) ingredient of sample is identified, carries out test classification (sand, clay, silt point to it according to qualification result
Class identification)；
(3) it is corrected in conjunction with its real-time humidity and real time resistance rate value according to the ingredient of sample, target is calculated
The soil resistivity value of sample under humidity.
In the step (3), specific calculating process are as follows:
If clay, then clay is surveyed into resistivity value ρClay obsHumidity ω is corresponded to field0It is updated in following formula and calculates:
Wherein ω is target humidity, is determined according to actual needs, the ρ that is calculatedClayValue it is corresponding when be exactly humidity being ω
The soil resistivity value；
If sample is silt, clay is surveyed into resistivity value ρSilt obsHumidity ω is corresponded to field0Following formula is updated to fall into a trap
It calculates:
Wherein ω is target humidity, is determined according to actual needs, the ρ that is calculatedSiltValue it is corresponding when be exactly humidity being ω
The soil resistivity value；
If sample is sand, clay is surveyed into resistivity value ρSand obsHumidity ω is corresponded to field0Following formula is updated to fall into a trap
It calculates:
Wherein ω is target humidity, is determined according to actual needs, the ρ that is calculatedSandValue it is corresponding when be exactly humidity being ω
The soil resistivity value.
Soil (clay, silt, sand) resistivity under different humidity is calculated, same humidity institute is corrected to
Corresponding soil resistivity value.
The humidity section of correction is as follows:
Clay: (4.58%, 76.23%)；
Silt: (4.60%, 37.76%)；
Sand: (5.19%, 26.23%).
The operation principle of the present invention is that: remove influence of the moisture content (humidity) to resistivity, contains to obtain a certain give
The corresponding resistivity of water rate (humidity), to preferably be utilized to soil resistivity, that is to say, that measured by field
Resistivity and moisture content (humidity) calculate the corresponding resistivity of given moisture content (humidity), in this case, the ginseng of input
Number is soil actual measurement resistivity and moisture content, and what is obtained is given moisture content (humidity) corresponding resistivity.
The invention has the benefit that
(1) correction course classifies to the soil of acquisition, and the moisture content that can more accurately describe different soils is (wet
Degree) with the relationship of soil resistivity；
(2) present invention can be corrected fieldwork resistivity, obtain corresponding electricity under specified moisture content (humidity)
Resistance rate, so that the accuracy of measured resistivity greatly improves, so as to which soil resistivity is preferably applied to ground connection
In the work such as test, detail design；
(3) it can reduce restriction of the humidity to the resistivity measurement process of three kinds of soil (clay, silt, sand), it is smaller
Influence of the humidity to three kinds of soil (clay, silt, sand) improves the quality of data of soil resistivity measured value.
Detailed description of the invention
Fig. 1 is soil resistivity Exponential Fitting curve of the invention.
Specific embodiment:
The invention will be further described with embodiment with reference to the accompanying drawing.
A kind of humidity correcting method of soil (clay, silt, sand) resistivity, specifically includes:
1, out of office to measure the moisture content and resistivity of soil outside, and take a small amount of sample.
2, the classification of soils is carried out to the sample fetched, if clay, then clay is surveyed into resistivity value ρClay obsWith field pair
Answer humidity ω0It is updated in following formula and calculates:
Wherein ω is target humidity, is determined according to actual needs, the ρ that is calculatedClayValue it is corresponding when be exactly humidity being ω
The soil resistivity value.
If sample is silt, clay is surveyed into resistivity value ρSilt obsHumidity ω is corresponded to field0Following formula is updated to fall into a trap
It calculates:
Wherein ω is target humidity, is determined according to actual needs, the ρ that is calculatedSiltValue it is corresponding when be exactly humidity being ω
The soil resistivity value.
If sample is sand, clay is surveyed into resistivity value ρSand obsHumidity ω is corresponded to field0Following formula is updated to fall into a trap
It calculates:
Wherein ω is target humidity, is determined according to actual needs, the ρ that is calculatedSandValue it is corresponding when be exactly humidity being ω
The soil resistivity value.
As shown in Figure 1, the resistivity index type matched curve of three kinds of soil.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not protects model to the present invention
The limitation enclosed, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not
Need to make the creative labor the various modifications or changes that can be made still within protection scope of the present invention.
Claims (2)
1. a kind of soil resistivity humidity correcting method, it is characterized in that: the following steps are included:
(1) in field acquisition soil sampling, corresponding resistivity value under its real-time humidity and the humidity is measured；
(2) ingredient of sample is identified, test classification is carried out to it according to qualification result；
(3) it is corrected in conjunction with its real-time humidity and real time resistance rate value according to the ingredient of sample, target humidity is calculated
The soil resistivity value of lower sample；
If clay, then clay is surveyed into resistivity value ρClay obsHumidity ω is corresponded to field0It is updated in following formula and calculates:
Wherein ω is target humidity, is determined according to actual needs, the ρ that is calculatedClayValue be exactly humidity be ω when it is corresponding should
The resistivity value of soil；
If sample is silt, clay is surveyed into resistivity value ρSilt obsHumidity ω is corresponded to field0It is updated in following formula and calculates:
Wherein ω is target humidity, is determined according to actual needs, the ρ that is calculatedSiltValue be exactly humidity be ω when it is corresponding should
The resistivity value of soil；
If sample is sand, clay is surveyed into resistivity value ρSand obsHumidity ω is corresponded to field0It is updated in following formula and calculates:
Wherein ω is target humidity, is determined according to actual needs, the ρ that is calculatedSandValue be exactly humidity be ω when it is corresponding should
The resistivity value of soil；
Soil resistivity under different humidity is calculated, soil resistivity value corresponding to same humidity is corrected to.
2. a kind of soil resistivity humidity correcting method as described in claim 1, it is characterized in that: the humidity section of correction is such as
Under:
Clay: (4.58%, 76.23%)；
Silt: (4.60%, 37.76%)；
Sand: (5.19%, 26.23%).
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| CN201610765879.8A CN106248740B (en) | 2016-08-30 | 2016-08-30 | A kind of soil resistivity humidity correcting method |
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| CN201610765879.8A CN106248740B (en) | 2016-08-30 | 2016-08-30 | A kind of soil resistivity humidity correcting method |
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| CN106248740B true CN106248740B (en) | 2019-07-16 |
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| CN108593715A (en) * | 2018-03-10 | 2018-09-28 | 青海省气象灾害防御技术中心 | A method of testing native resistivity under artificial environment |
| CN113807981A (en) * | 2021-07-31 | 2021-12-17 | 广东电网有限责任公司广州供电局 | Power transmission corridor soil resistivity analysis method, device, equipment and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03274449A (en) * | 1990-03-26 | 1991-12-05 | Nkk Corp | Apparatus for measuring soil characteristics |
| US6037784A (en) * | 1999-03-16 | 2000-03-14 | Geometrics | Resistivity measuring apparatus having transmitter and receiver with power level signals |
| CN105424760A (en) * | 2015-11-23 | 2016-03-23 | 西南林业大学 | Calibration method for soil resistivity and soil water content of rocky mountainous area |
| CN105758895A (en) * | 2016-05-11 | 2016-07-13 | 山东电力工程咨询院有限公司 | Soil resistivity temperature correcting method |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9804113B2 (en) * | 2014-05-19 | 2017-10-31 | Fiskars Oyj Abp | Soil moisture sensor |
-
2016
- 2016-08-30 CN CN201610765879.8A patent/CN106248740B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03274449A (en) * | 1990-03-26 | 1991-12-05 | Nkk Corp | Apparatus for measuring soil characteristics |
| US6037784A (en) * | 1999-03-16 | 2000-03-14 | Geometrics | Resistivity measuring apparatus having transmitter and receiver with power level signals |
| CN105424760A (en) * | 2015-11-23 | 2016-03-23 | 西南林业大学 | Calibration method for soil resistivity and soil water content of rocky mountainous area |
| CN105758895A (en) * | 2016-05-11 | 2016-07-13 | 山东电力工程咨询院有限公司 | Soil resistivity temperature correcting method |
Non-Patent Citations (2)
| Title |
|---|
| 《土壤湿度与土壤电阻率的关系》;黄耀磊等;《通讯世界》;20150630;全文 |
| 雷击风险评估中土壤湿度修正系数实验方法讨论;何俊杰等;《S13 第十届防雷减灾论坛——雷电灾害与风险评估》;20120912;第3-4页 |
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