CN106248740A - A kind of soil resistivity humidity correcting method - Google Patents
A kind of soil resistivity humidity correcting method Download PDFInfo
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- CN106248740A CN106248740A CN201610765879.8A CN201610765879A CN106248740A CN 106248740 A CN106248740 A CN 106248740A CN 201610765879 A CN201610765879 A CN 201610765879A CN 106248740 A CN106248740 A CN 106248740A
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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 method, comprise the following steps: gather soil sampling in the wild, record resistivity value corresponding under its real-time humidity and this humidity；The composition of specimen is identified, confirms that it is under the jurisdiction of clay, silt or sand；According to the composition of specimen, in conjunction with its real-time humidity and real time resistance rate value, it is corrected, is calculated the soil resistivity value of specimen under target humidity.Fieldwork resistivity can be corrected by the present invention, obtain specifying resistivity corresponding under moisture content (humidity), the accuracy making measured resistivity is greatly improved, such that it is able to be preferably applied in the middle of the work such as earthing test, detail design by soil resistivity.
Description
Technical field
The present invention relates to a kind of soil resistivity humidity correcting method.
Background technology
Soil resistivity can directly affect step voltage in the earth, surface potential, CURRENT DISTRIBUTION and earthing pole heating, and
And can change along with the change of water content.Humidity correcting, can effectively reduce and lead with external factor such as weather, time period, seasons
Cause test section humidity change and cause the change of apparent resistivity test value to be disturbed, and improve the precision of resistivity method physical prospecting test.
Chinese scholars is exploring the relation of soil resistivity and moisture content always, and many articles have carried out deep spy to conductive mechanism
Begging for, experiment that also some scientist is correlated with for this problem has also shown that the resistivity of some soil is with soil
The variation relation of humidity, but for their analysis is only for this rule, not by the rule of this experiment gained
Rule is applied in the middle of reality, and more nobody proposes relevant having for humidity to three kinds of soil (clay, silt, sand) resistivity
Bearing calibration targetedly.
Summary of the invention
The present invention is to solve the problems referred to above, it is proposed that a kind of soil resistivity humidity correcting method, this method can be to electricity
In method exploration, the size of the resistivity of the three kinds of soil (clay, silt, sand) under different humidity is corrected specifying humidity
Corresponding resistivity value size, to reduce the humidity impact on soil resistivity measured value, thus obtain being more favorable for using and
Soil resistivity value relatively.
To achieve these goals, the present invention adopts the following technical scheme that
A kind of soil resistivity humidity correcting method, comprises the following steps:
(1) gather soil sampling in the wild, record resistivity value corresponding under its real-time humidity and this humidity；
(2) identifying the composition of specimen, (sand, clay, silt divide according to qualification result, it to be carried out test classification
Class is identified)；
(3) according to the composition of specimen, in conjunction with its real-time humidity and real time resistance rate value, it is corrected, is calculated target
The soil resistivity value of specimen under humidity.
In described step (3), concrete calculating process is:
If clay, then clay is surveyed resistivity value ρClay obsHumidity ω corresponding with field0It is updated in following formula calculate:
Wherein ω is target humidity, determines according to the actual requirements, calculated ρClayValue be exactly that humidity is corresponding when being ω
The resistivity value of this soil；
If specimen is silt, then clay is surveyed resistivity value ρSilt obsHumidity ω corresponding with field0It is updated to following formula fall into a trap
Calculate:
Wherein ω is target humidity, determines according to the actual requirements, calculated ρSiltValue be exactly that humidity is corresponding when being ω
The resistivity value of this soil；
If specimen is sand, then clay is surveyed resistivity value ρSand obsHumidity ω corresponding with field0It is updated to following formula fall into a trap
Calculate:
Wherein ω is target humidity, determines according to the actual requirements, calculated ρSandValue be exactly that humidity is corresponding when being ω
The resistivity value of this soil.
Soil (clay, silt, sand) resistivity under different humidity is calculated, is corrected to same humidity institute
Corresponding soil resistivity value.
The humidity of correction is interval 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: removes the moisture content (humidity) impact on resistivity, thus obtains a certain giving and contain
The resistivity that water rate (humidity) is corresponding, thus preferably soil resistivity is utilized, say, that recorded by field
Resistivity and moisture content (humidity) calculate the resistivity that given moisture content (humidity) is corresponding, in this case, the ginseng of input
Number is soil actual measurement resistivity and moisture content, and obtain is the resistivity that given moisture content (humidity) is corresponding.
The invention have the benefit that
(1) soil gathered is classified by trimming process, and the moisture content that can more accurately describe different soils is (wet
Degree) and the relation of soil resistivity；
(2) fieldwork resistivity can be corrected by the present invention, obtains specifying electricity corresponding under moisture content (humidity)
Resistance rate so that the accuracy of measured resistivity is greatly improved, such that it is able to be preferably applied to ground connection by soil resistivity
In the middle of the work such as test, detail design；
(3) humidity restriction to the resistivity measurement process of three kinds of soil (clay, silt, sand) can be reduced, less
The humidity impact on three kinds of soil (clay, silt, sand), improves the quality of data of soil resistivity measured value.
Accompanying drawing explanation
Fig. 1 is the soil resistivity Exponential Fitting curve of the present invention.
Detailed description of the invention:
The invention will be further described with embodiment below in conjunction with the accompanying drawings.
A kind of humidity correcting method of soil (clay, silt, sand) resistivity, specifically includes:
1, record moisture content and the resistivity of soil in the wild, and take a small amount of specimen.
2, the specimen fetched is carried out the classification of soils, if clay, then clay is surveyed resistivity value ρClay obsWith field pair
Answer humidity ω0It is updated in following formula calculate:
Wherein ω is target humidity, determines according to the actual requirements, calculated ρClayValue be exactly that humidity is corresponding when being ω
The resistivity value of this soil.
If specimen is silt, then clay is surveyed resistivity value ρSilt obsHumidity ω corresponding with field0It is updated to following formula fall into a trap
Calculate:
Wherein ω is target humidity, determines according to the actual requirements, calculated ρSiltValue be exactly that humidity is corresponding when being ω
The resistivity value of this soil.
If specimen is sand, then clay is surveyed resistivity value ρSand obsHumidity ω corresponding with field0It is updated to following formula fall into a trap
Calculate:
Wherein ω is target humidity, determines according to the actual requirements, calculated ρSandValue be exactly that humidity is corresponding when being ω
The resistivity value of this soil.
As it is shown in figure 1, the resistivity index type matched curve of three kinds of soil.
Although the detailed description of the invention of the present invention is described by the above-mentioned accompanying drawing that combines, but not the present invention is protected model
The restriction enclosed, one of ordinary skill in the art should be understood that on the basis of technical scheme, and those skilled in the art are not
Need to pay various amendments or deformation that creative work can make still within protection scope of the present invention.
Claims (4)
1. a soil resistivity humidity correcting method, is characterized in that: comprise the following steps:
(1) gather soil sampling in the wild, record resistivity value corresponding under its real-time humidity and this humidity；
(2) composition of specimen is identified, according to qualification result, it is carried out test classification；
(3) according to the composition of specimen, in conjunction with its real-time humidity and real time resistance rate value, it is corrected, is calculated target humidity
The soil resistivity value of lower specimen.
2. a kind of soil resistivity humidity correcting method as claimed in claim 1, is characterized in that: in described step (3), specifically
Calculating process be:
If clay, then clay is surveyed resistivity value ρClay obsHumidity ω corresponding with field0It is updated in following formula calculate:
Wherein ω is target humidity, determines according to the actual requirements, calculated ρClayValue be exactly that humidity is corresponding when being ω should
The resistivity value of soil；
If specimen is silt, then clay is surveyed resistivity value ρSilt obsHumidity ω corresponding with field0It is updated in following formula calculate:
Wherein ω is target humidity, determines according to the actual requirements, calculated ρSiltValue be exactly that humidity is corresponding when being ω should
The resistivity value of soil；
If specimen is sand, then clay is surveyed resistivity value ρSand obsHumidity ω corresponding with field0It is updated in following formula calculate:
Wherein ω is target humidity, determines according to the actual requirements, calculated ρSandValue be exactly that humidity is corresponding when being ω should
The resistivity value of soil.
3. a kind of soil resistivity humidity correcting method as claimed in claim 1, is characterized in that: to the soil under different humidity
Resistivity calculates, and is corrected to the soil resistivity value corresponding to same humidity.
4. a kind of soil resistivity humidity correcting method as claimed in claim 1, is characterized in that: the humidity interval of correction is such as
Under:
Clay: (4.58%, 76.23%)；
Silt: (4.60%, 37.76%)；
Sand: (5.19%, 26.23%).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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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| CN106248740A true CN106248740A (en) | 2016-12-21 |
| CN106248740B CN106248740B (en) | 2019-07-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 (5)
| 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 |
| US20150330932A1 (en) * | 2014-05-19 | 2015-11-19 | Fiskars Oyj Abp | Soil moisture sensor |
| 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 |
-
2016
- 2016-08-30 CN CN201610765879.8A patent/CN106248740B/en active Active
Patent Citations (5)
| 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 |
| US20150330932A1 (en) * | 2014-05-19 | 2015-11-19 | Fiskars Oyj Abp | Soil moisture sensor |
| 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 |
|---|
| 何俊杰等: "雷击风险评估中土壤湿度修正系数实验方法讨论", 《S13 第十届防雷减灾论坛——雷电灾害与风险评估》 * |
| 黄耀磊等: "《土壤湿度与土壤电阻率的关系》", 《通讯世界》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| Publication number | Publication date |
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| CN106248740B (en) | 2019-07-16 |
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