13.080.40 土壤的水文特性 标准查询与下载

NF X31-504:1995 太阳质量 水平水力传导率测量方法和原位排水孔隙率测量方法 盖永方法

Soil quality - Method for measuring equivalent horizontal hydraulic conductivity and in situ drainage porosity - Guyon method.

ASTM D5407-95(2000) 无孔隙压力测量的三轴压缩中未排水完整岩芯样品弹性模量的标准试验方法

1.1 This test method covers the determination of elastic moduli of intact rock core specimens in undrained triaxial compression. It specifies the apparatus, instrumentation, and procedures for determining the stress-axial strain and the stress-lateral strain curves, as well as Young''s modulus, E, and Poisson''s ratio, v. Note 1--This test method does not include the procedures necessary to obtain a stress-strain curve beyond the ultimate strength.1.2 For an isotropic material, the relation between the shear and bulk moduli and Young''s modulus and Poisson''s ratio are: Equation 1 - G = E/2(1 + v) Equation 2 - K = E/3(1 - 2v)where: G = shear modulus,K = bulk modulus, E = Young''s modulus, andv = Poisson''s ratio. 1.2.1 The engineering applicability of these equations is decreased if the rock is anisotropic. When possible, it is desirable to conduct tests in the plane of foliation, bedding, etc., and at right angles to it to determine the degree of anisotropy. It is noted that equations developed for isotropic materials may give only approximate calculated results if the difference in elastic moduli in any two directions is greater than 10 % for a given stress level.Note 2--Elastic moduli measured by sonic methods may often be employed as preliminary measures of anisotropy.1.3 This test method given for determining the elastic constants does not apply to rocks that undergo significant inelastic strains during the test, such as potash and salt. The elastic moduli for such rocks should be determined from unload-reload cycles, that is not covered by this test method.1.4 The values stated in SI units are to be regarded as the standard.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. Specific safety precautions are given in Section 6.

Standard Test Method for Elastic Moduli of Undrained Intact Rock Core Specimens in Triaxial Compression Without Pore Pressure Measurement

ISO 11465:1993/Cor 1:1994 土壤质量;土壤生物的干物质和水含量的测定;重量法;技术勘误表1

The standard is Soil quality; determination of dry matter and water content on a mass basis; gravimetric method; technical corrigendum 1

Soil quality; determination of dry matter and water content on a mass basis; gravimetric method; technical corrigendum 1

BS 7755-3.1:1994 土壤质量 化学方法 重量法测定干物质和水分含量

This International Standard specifies a method for the determination of the dry matter content and water content of soil samples on a mass basis. This method can be applied to all types of soil sam-ples. Different procedures are specified for air-dried soil samples, for example samples pretreated accord-ing to ISO 11464, and for field-moist soil samples. For the determination of soil water content on a vol-ume basis, refer to ISO 11461.

Soil quality. Chemical methods. Determination of dry matter and water content on a mass basis by a gravimetric method

ISO 11465:1993 土壤质量 土壤生物的干物质和水含量的测定 重量法

The method specified can be applied to all types of soil samples. Different procedures are specified for air-dried soil samples, e.g. samples pretreated according to ISO 11464, and for field-moist soil samples. Its principle is drying soil samples to constant mass at 105 鳦 and using the difference in mass of an amount of soil before and after the drying procedure to calculate the dry matter and water contents on a mass basis. For the determination of soil water content on a volume basis, refer to ISO 11461.

Soil quality; determination of dry matter and water content on a mass basis; gravimetric method

GOST 28268-1989 土壤.温度、最大吸湿量和防止植物枯萎所需温度的测定方法

Soils. Methods of determination of moisture, maximum hygroscopic moisture and moisture of steady plant fading

GOST 17.4.4.03-1986 自然保护.土壤.下雨冲潜在危险性的确定方法

Настоящий стандарт устанавливает метод определения потенциальной опасности эрозии почв под воздействием дождей с разбивкой по классам и

Nature protection. Soils. Method for determination of potential danger of erosion due to rains