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GB/T 23561.4-2009: Methods for determining the physical and mechanical properties of coal and rock -- Part 4: Methods for calculating the porosity of coal and rock
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 23561.4-2009 | English | 189 |
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Methods for determining the physical and mechanical properties of coal and rock -- Part 4: Methods for calculating the porosity of coal and rock
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GB/T 23561.4-2009
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Basic data | Standard ID | GB/T 23561.4-2009 (GB/T23561.4-2009) | | Description (Translated English) | Methods for determining the physical and mechanical properties of coal and rock -- Part 4: Methods for calculating the porosity of coal and rock | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D04 | | Classification of International Standard | 73.010 | | Word Count Estimation | 8,871 | | Date of Issue | 2009-04-08 | | Date of Implementation | 2009-12-01 | | Regulation (derived from) | National Standard Approval Announcement 2009 No.5 (Total No.145) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the terms and definitions of coal and rock porosity calculated, coal and rock total porosity (ie, including the opening and closing pores in two parts) calculation, coal and rock effective porosity (ie open porosity) calculation. This section applies to the calculation of coal and rock porosity, which applies to calculate the effective porosity and water do not disintegrate specimen volume change does not occur. | GB/T 23561.4-2009: Methods for determining the physical and mechanical properties of coal and rock -- Part 4: Methods for calculating the porosity of coal and rock
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National Standards of People's Republic of China
GB/T 23561.4-2009
Methods for determination of physical and mechanical properties of coal and rock
Part 4.Calculation method of coal and rock porosity
General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China
Issued by the Standardization Administration of China
foreword
GB/T 23561 "Methods for Determination of Physical and Mechanical Properties of Coal and Rock" is released by parts and is divided into 16 parts.
--- Part 1.General provisions on sampling;
--- Part 2.Determination of true density of coal and rock;
--- Part 3.Determination method of coal and rock block density;
--- Part 4.Calculation method of coal and rock porosity;
--- Part 5.Determination of water absorption of coal and rock;
--- Part 6.Coal and rock moisture content determination method;
--- Part 7.Determination of uniaxial compressive strength and calculation method of softening coefficient;
--- Part 8.Determination methods of coal and rock deformation parameters;
--- Part 9.Coal and rock triaxial strength and deformation parameters determination method;
--- Part 10.Determination of tensile strength of coal and rock;
--- Part 11.Coal and rock shear test methods;
--- Part 12.Determination method of coal firmness coefficient;
--- Part 13.Determination method of coal and rock point load strength;
--- Part 14.Method for determination of rock expansion rate;
--- Part 15.Determination method of rock expansion stress;
--- Part 16.Determination method of rock disintegration resistance index.
This Part is Part 4 of GB/T 23561.
Appendix A of this section is a normative appendix.
This part is proposed and managed by China Coal Industry Association.
This part is drafted by. Coal Research Institute Mining Design Research Branch and Coal Research Institute Detection Research Branch.
The main drafters of this section. Qi Qingxin, Li Jiqing, Mao Debing, Fu Jingyu, Zhang Xueliang.
GB/T 23561.4-2009
Methods for determination of physical and mechanical properties of coal and rock
Part 4.Calculation method of coal and rock porosity
1 Scope
This part of GB/T 23561 specifies the terms and definitions for the calculation of coal and rock porosity, the total porosity of coal and rock (that is, including the opening
The calculation method of coal and rock effective porosity (that is, open porosity).
This part is applicable to the calculation of coal and rock porosity, and the calculation of effective porosity is applicable to the conditions that do not disintegrate when exposed to water and do not change in volume.
of test pieces.
2 Normative references
The terms in the following documents become the terms of this part through the reference of this part of GB/T 23561.All dated citations
documents, all subsequent amendments (excluding errata content) or revisions do not apply to this section, however, it is encouraged to reach
The parties to the agreement research the availability of the latest versions of these documents. For undated reference documents, the latest version applies to this
part.
GB/T 23561.2-2009 Determination of physical and mechanical properties of coal and rock Part 2.Determination of true density of coal and rock
GB/T 23561.3-2009 Methods for Determination of Physical and Mechanical Properties of Coal and Rock Part 3.Determination of Density of Coal and Rock Blocks
GB/T 23561.5-2009 Determination of physical and mechanical properties of coal and rock Part 5.Determination of water absorption of coal and rock
3 Terms and Definitions
The following terms and definitions apply to this part of GB/T 23561.
4 Calculation method of coal or rock total porosity
Calculate the total porosity of coal or rock according to formula (1).
5 Determination of coal or rock effective porosity
Since the value of effective porosity of coal or rock is equal to the value of forced (saturated) water absorption of coal or rock, it can be calculated according to GB/T 23561.5-
2009 to measure the forced water absorption q of coal or rock, then there is formula (2).
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