13.080.40 土壤的水文特性 标准查询与下载



共找到 145 条与 土壤的水文特性 相关的标准,共 10

이 규격은 토양의 수분 보유 특성을 측정하기 위한 실험실 규모의 방법에 대하여 규정한다.

Soil quality-Determination of the water retention characteristic(Laboratory method)

ICS
13.080.40
CCS
Z18;B10
发布
2005-02-28
实施
2005-02-28

The standard defines the approach for predicting erosion of agriculturally used soils by water by means of the long-term model of ABAG, the Universal Soil Loss Equation.#,,#

Soil quality - Predicting soil erosion by water by means of ABAG

ICS
13.080.40
CCS
B11
发布
2005-02
实施

This International Standard specifies a laboratory method for simultaneous determination of the unsaturated hydraulic conductivity and the soil water retention characteristic. This standard is applicable only to measurement of the drying or desorption curve. Application of the method is restricted to soil samples which are, as far as possible, homogeneous. The method is not applicable to soils which shrink in the range of h(m) = -0 cm to h(m) = -800 cm. The range of determination of the conductivity depends on the soil type.

Soil quality - Determination of unsaturated hydraulic conductivity and water-retention characteristic - Wind's evaporation method

ICS
13.080.40
CCS
发布
2004-08-13
实施
2004-07-28

This International Standard specifies a test method which covers laboratory measurement of the hydraulic conductivity of water-saturated porous materials with a flexible wall permeameter.

Soil quality - Determination of hydraulic conductivity of saturated porous materials using a flexible wall permeameter

ICS
13.080.40
CCS
发布
2004-08-13
实施
2004-07-28

This International Standard specifies a test method for laboratory measurement of the hydraulic conductivity of water-saturated porous materials using a flexible wall permeameter. This International Standard is applicable to undisturbed or compacted specimens that have a hydraulic conductivity between 1 × 10 m/s (1 × 10 cm/s) and 1 × 10 m/s (1 × 10 cm/s). Typical soil types falling in this category are clay, clay and sand tills, silt, peat, mud, etc.

Soil quality - Determination of hydraulic conductivity of saturated porous materials using a flexible wall permeameter

ICS
13.080.40
CCS
P13
发布
2004-07-19
实施
2004-07-19

This International Standard specifies a laboratory method for the simultaneous determination in soils of the unsaturated hydraulic conductivity and of the soil water-retention characteristic. It is applicable only to measurement of the drying or desorption curve. Application of the method is restricted to soil samples which are, as far as possible, homogeneous. The method is not applicable to soils which shrink in the range of matric head hm = 0 cm to hm = -800 cm. The range of the determination of the conductivity depends on the soil type. It lies between matric heads of approximately hm = -50 cm and hm = -700 cm. The range of the determination of the water-retention characteristic lies between matric heads of approximately hm = 0 cm and hm = -800 cm. NOTE 1 An infiltrometer method can be used to determine hydraulic conductivities near saturation. NOTE 2 ISO 11274 gives methods to determine the water-retention characteristic for matric heads between 0 cm and -15 000 cm.

Soil quality - Determination of unsaturated hydraulic conductivity and water-retention characteristic - Wind's evaporation method

ICS
13.080.40
CCS
B11
发布
2004-07-13
实施
2004-07-13

The water content of soil is used throughout geotechnical engineering practice, both in the laboratory and in the field. Results are sometimes needed within a short time period and in locations where it is not practical to install an oven or to transport samples to an oven. This test method is used for these occasions. The results of this test have been used for field control of compacted embankments or other earth structures such as in the determination of water content for control of soil moisture and dry density within a specified range. This test method requires specimens consisting of soil having all particles smaller than the No. 4 sieve size. This test method may not be as accurate as other accepted methods such as Test Method D 2216. Inaccuracies may result because specimens are too small to properly represent the total soil, from clumps of soil not breaking up to expose all the available water to the reagent and from other inherent procedural, equipment or process inaccuracies. Therefore, other methods may be more appropriate when highly accurate results are required, or when the use of test results is sensitive to minor variations in the values obtained. Note 18212;The quality of the result produced by this standard is dependent on the competence of the personnel performing it, and the suitability of the equipment and facilities used. Agencies that meet the criteria of Practice D 3740 are generally considered capable of competent and objective testing/sampling/inspection. Users of this standard are cautioned that compliance with Practice D 3740 does not in itself ensure reliable results. Reliable results depend on many factors; Practice D 3740 provides a means of evaluating some of those factors.1.1 This test method outlines procedures for determining the water (moisture) content of soil by chemical reaction using calcium carbide as a reagent to react with the available water in the soil producing a gas. A measurement is made of the gas pressure produced when a specified mass of wet or moist soil is placed in a testing device with an appropriate volume of reagent and mixed. 1.2 This test method is not intended as a replacement for Test Method D 2216; but as a supplement when rapid results are required, when testing is done in field locations, or where an oven is not practical for use. Test Method D 2216 is to be used as the test method to compare for accuracy checks and correction. 1.3 This test method is applicable for most soils. Calcium carbide, used as a reagent, reacts with water as it is mixed with the soil by shaking and agitating with the aid of steel balls in the apparatus. To produce accurate results, the reagent must react with all the water which is not chemically hydrated with soil minerals or compounds in the soil. Some highly plastic clay soils or other soils not friable enough to break up may not produce representative results because some of the water may be trapped inside soil clods or clumps which cannot come in contact with the reagent. There may be some soils containing certain compounds or chemicals that will react unpredictably with the reagent and give erroneous results. Any such problem will become evident as calibration or check tests with Test Method D 2216 are made. Some soils containing compounds or minerals that dehydrate with heat (such as gypsum) which are to have special temperature control with Test Method D 2216 may not be affected (dehydrated) in this test method. 1.4 This test method is limited to using calcium carbide moisture test equipment made for 20 g, or larger, soil specimens and to testing soil which contains particles no larger than the No. 4 Standard sieve size. This standard does not purport to addres......

Standard Test Method for Field Determination of Water (Moisture) Content of Soil by the Calcium Carbide Gas Pressure Tester

ICS
13.080.40
CCS
发布
2004-07-01
实施

This International Standard specifies a laboratory method for the simultaneous determination in soils of the unsaturated hydraulic conductivity and of the soil water-retention characteristic. It is applicable only to measurement of the drying or desorption curve. Application of the method is restricted to soil samples which are, as far as possible, homogeneous. The method is not applicable to soils which shrink in the range of matric head hm = 0 cm to hm = -800 cm. The range of the determination of the conductivity depends on the soil type. It lies between matric heads of approximately hm = -50 cm and hm = -700 cm. The range of the determination of the water-retention characteristic lies between matric heads of approximately hm = 0 cm and hm = -800 cm. NOTE 1 An infiltrometer method can be used to determine hydraulic conductivities near saturation. NOTE 2 ISO 11274 gives methods to determine the water-retention characteristic for matric heads between 0 cm and -15 000 cm.

Soil quality - Determination of unsaturated hydraulic conductivity and water-retention characteristic - Wind's evaporation method

ICS
13.080.40
CCS
Z18
发布
2004-07
实施

This International Standard specifies a test method for laboratory measurement of the hydraulic conductivity of water-saturated porous materials using a flexible wall permeameter. This International Standard is applicable to undisturbed or compacted specimens that have a hydraulic conductivity between 1 × 10 m/s (1 × 10 cm/s) and 1 × 10 m/s (1 × 10 cm/s). Typical soil types falling in this category are clay, clay and sand tills, silt, peat, mud, etc.

Soil quality - Determination of hydraulic conductivity of saturated porous materials using a flexible wall permeameter

ICS
13.080.40
CCS
B11
发布
2004-07
实施

This International Standard provides guidance on the principles behind, and main methods for, the evaluation of sites, soils, and soil materials in relation to their role as a source of contamination of groundwater and their function in transporting, degrading and transforming contaminants. It identifies and lists relevant monitoring strategies, methods for sampling, soil processing and analytical methods. This International Standard is applicable to the evaluation of the impact of contaminants on groundwater in relation to  drinking water quality,  irrigation water quality,  industrial use,  natural base flow.

Soil quality - Characterization of soil related to groundwater protection

ICS
13.080.40
CCS
Z18
发布
2004-05
实施

This standard specifies a method for the gravimetric determination of soil water content as a volume fraction. The method is applicable to all types of non-swelling or non-shrinking soils where coring sleeves can be used for sampling. It is not applicable to soils where stones, tough roots or other factors prevent collection of soil cores. It is used as a reference method (e.g. the calibration of indirect methods for determination of water content).

Soil quality - Determination of soil water content as a volume fraction using coring sleeves - Gravimetric method

ICS
13.080.40
CCS
发布
2003-09-12
实施
2003-07-31

This standard specifies a method for the gravimetric determination of soil water content as a volume fraction on the basis of the ratio of measured water content mass to known dry bulk density. This standard is applicable to all types of non-swelling or non-shrinking soils. It is used as a reference method (e.g. the calibration of indirect methods for determination of water content).

Soil quality - Determination of soil water content as a volume fraction on the basis of known dry bulk density - Gravimetric method

ICS
13.080.40
CCS
发布
2003-09-12
实施
2003-07-31

This International Standard specifies a method for the gravimetric determination of soil water content as a volume fraction on the basis of the ratio of measured water content mass to known dry bulk density. This International Standard is applicable to all types of non-swelling or non-shrinking soils. It is used as a reference method (e.g. the calibration of indirect methods for determination of water content).

Soil quality - Determination of soil water content as a volume fraction on the basis of known dry bulk density - Gravimetric method

ICS
13.080.40
CCS
B11
发布
2003-04
实施

This International Standard gives a simplified theory of the physics of soil water in the unsaturated zone and defines a set of terms, quantities, units and symbols used in the field of soil physics investigation of the unsaturated zone. This International Standard is applicable only to standards on soil physical investigations of the unsaturated zone (including swelling soils) elaborated within ISO/TC 190. The International Standard specifically excludes macropore flow.

Soil quality - Soil water and the unsaturated zone - Definitions, symbols and theory

ICS
13.080.40
CCS
发布
2002-11-11
实施
2002-09-11

This International Standard gives a simplified theory of the physics of soil water in the unsaturated zone and defines a set of terms, quantities, units and symbols used in the field of soil physics investigation of the unsaturated zone. This International Standard is applicable only to standards on soil physical investigations of the unsaturated zone (including swelling soils) elaborated within ISO/TC 190. This International Standard specifically excludes macropore flow.

Soil quality - Soil water and the unsaturated zone - Definitions, symbols and theory

ICS
13.080.40
CCS
B11
发布
2002-08
实施

The document describes a procedure for determination of soil water content in the laboratory to be used as basis for investigations on the water regime of soils, and is suitable as method for calibration of soil water content determinations carried out in situ.#,,#

Soil quality - Determination of soil water content as a volume fraction using coring sleeves - Gravimetric method (ISO 11461:2001)

ICS
13.080.40
CCS
B11
发布
2002-05
实施

This International Standard specifies a method for the gravimetric determination of soil water content as a volume fraction. The method is applicable to all types of non-swelling or non-shrinking soils where coring sleeves can be used for sampling. It is not applicable to soils where stones, tough roots or other factors prevent collection of soil cores. It is used as a reference method (e.g. the calibration of indirect methods for determination of water content). NOTE The determination of water content as a mass fraction is described in ISO 11465.

Soil quality - Determination of soil water content as a volume fraction using coring sleeves - Gravimetric method

ICS
13.080.40
CCS
B11
发布
2001-09-03
实施
2001-09-03

This International Standard specifies a method for the gravimetric determination of soil water content as a volume fraction. The method is applicable to all types of non-swelling or non-shrinking soils where coring sleeves can be used for sampling. It is not applicable to soils where stones, tough roots or other factors prevent collection of soil cores. It is used as a reference method (e.g. the calibration of indirect methods for determination of water content). NOTE The determination of water content as a mass fraction is described in ISO 11465.

Soil quality - Determination of soil water content as a volume fraction using coring sleeves - Gravimetric method

ICS
13.080.40
CCS
B13
发布
2001-07
实施

This test method has been designed principally for granular carriers with LHC greater than 5.0 %. The incremental amount of suitable fluid added can be adjusted down as needed for carriers with LHC less than 5.0 %. This test method is applicable to granules in the range from 4 to 100 mesh (4.75 to 0.150 mm).1.1 This test method is used to determine the liquid holding capacity (LHC) of granular carriers.1.2 The values stated in either SI or inch-pound units are to be regarded as standard. The values given in parentheses are for information only.This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific precautionary statements, see Section .

Standard Test Method for Liquid Holding Capacity of Granular Carriers

ICS
13.080.40
CCS
B11
发布
2001
实施

The determination of the water-content, or moisture content, of soil is one of the fundamental needs in the soil physics and hydrology disciplines. The need arises from requirements for defining the optimal time for irrigation, the infiltration rate, the soil-moisture flux, contaminant transport rates, and evaluating the potential for leakage from a waste site or a surface or subsurface barrier. The TDR application covered in this test method is that used for point measurements of moisture content in soil. The application is either through manual insertion into the soil or by burying a probe in the subsurface to acquire moisture content data at a specific location. In addition, core samples may be tested with TDR at a drill site to acquire real-time soil moisture data.1.1 This test method covers the determination of water content (or moisture content) in soil by the use of the electromagnetic technique called Time-Domain Reflectometry (TDR).1.2 This test method was written to detail the procedure for conventional TDR measurements of soil. Other TDR applications exist for the purpose of quantifying water content in soil and are not covered here, such as flat probe technologies and wetting front advance methods.1.3 Commercial TDR applications exist which automate the TDR methodology and are not detailed in this test method. It is likely that overlap exists in the automated commercial systems versus this applied method, and the user is encouraged to adhere to this test method when applicable.1.4 This test method is one of a series on vadose zone characterization methods. Other standards have been prepared on vadose zone characterization techniques.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Standard Test Method for Determination of Water (Moisture) Content of Soil by the Time-Domain Reflectometry (TDR) Method

ICS
13.080.40
CCS
P13
发布
2000
实施



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