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 (English Version)

Standard No.
GB/T 23561.4-2009
Language
Chinese, Available in English version
Release Date
2009
Published By
General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest
GB/T 23561.4-2009
Scope
This part of GB/T 23561 specifies the terms and definitions for the calculation of coal and rock porosity, the calculation of coal and rock total porosity (that is, including open and closed pores), the effective porosity of coal and rock (that is, open porosity) Calculation method. This part is applicable to the calculation of coal and rock porosity, and the calculation of effective porosity is applicable to test pieces that do not disintegrate when exposed to water and whose volume does not change.

GB/T 23561.4-2009 Referenced Document

  • GB/T 23561.2-2009 Methods for determining the physical and mechanical properties of coal and rock.Part 2:Methods for determining the true density of coal and rock
  • GB/T 23561.3-2009 Methods for determining the physical and mechanical properties of coal and rock.Part 3:Methods for determining the block density of coal and rock
  • GB/T 23561.5-2009 Methods for determining the physical and mechanical properties of coal and rock.Part 5:Methods for determining the water absorbability of coal and rock

GB/T 23561.4-2009 history

  • 2009 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
Methods for determining the physical and mechanical properties of coal and rock.Part 4:Methods for calculating the porosity of coal and rock

GB/T 23561.4-2009 -All Parts

GB/T 23561.1-2009 Methods for determining the physical and mechanical properties of coal and rock.Part 1:General requirements for sampling GB/T 23561.10-2010 Methods for determining the physical and mechanical properties of coal and rock.Part 10:Methods for determining tensile strength of coal and rock GB/T 23561.11-2010 Methods for determining the physical and mechanical properties of coal and rock.Part 11:Methods for determining shear strength of coal and rock GB/T 23561.12-2010 Methods for determining the physical and mechanical properties of coal and rock.Part 12:Methods for determining coal hardiness coefficient GB/T 23561.13-2010 Methods for determining the physical and mechanical properties of coal and rock.Part 13:Methods for determining point load strength index of coal and rock GB/T 23561.14-2010 Methods for determining the physical and mechanical properties of coal and rock.Part 14:Methods for determining the swelling ratio of rock GB/T 23561.15-2010 Methods for determining the physical and mechanical properties of coal and rock.Part 15:Method for determining the swelling stress of rock GB/T 23561.16-2010 Methods for determining the physical and mechanical properties of coal and rock.Part 16:Method for determining slake durability index of rock GB/T 23561.2-2009 Methods for determining the physical and mechanical properties of coal and rock.Part 2:Methods for determining the true density of coal and rock GB/T 23561.3-2009 Methods for determining the physical and mechanical properties of coal and rock.Part 3:Methods for determining the block density of coal and rock 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 GB/T 23561.5-2009 Methods for determining the physical and mechanical properties of coal and rock.Part 5:Methods for determining the water absorbability of coal and rock GB/T 23561.6-2009 Methods for determining the physical and mechanical properties of coal and rock.Part 6:Methods for determining the moisture content of coal and rock GB/T 23561.7-2009 Methods for determining the physical and mechanical properties of coal and rock.Part 7:Methods for determining the uniaxial compressive strength and counting softening coefficient GB/T 23561.8-2024 Methods for determination of physical and mechanical properties of coal and rock Part 8: Methods for determination of deformation parameters of coal and rock GB/T 23561.9-2009 Methods for determining the physical and mechanical properties of coal and rock.Part 9:Methods for determining the triaxial strength and deformation parameters of coal and rock


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