GB/T 25217.2-2010Methods for test, monitoring and prevention of rock burst - Part 2: Classification and laboratory test method on bursting liability of coal (English PDF)
冲击地压测定、监测与防治方法 第2部分：煤的冲击倾向性分类及指数的测定方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
September 26, 2010
Implementation date
February 1, 2011
Scope
GB/T 25217.2-2010 is the English-translated version of 冲击地压测定、监测与防治方法 第2部分：煤的冲击倾向性分类及指数的测定方法.
GB/T 25217.2-2010 is the Chinese standard "Methods for test, monitoring and prevention of rock burst - Part 2: Classification and laboratory test method on bursting liability of coal".
Its scope clause reads: This section GB/T 25217 specifies the terms and definitions and classification index measuring the impact orientation of coal involved, the impact of dumping coal Classification and index anisotropy, equipment, specimen size, measured uniaxial compressive strength, dynamic failure time measurement, elastic energy index determination and punches Impact energy index determination.
The impact of coal This section applies to coal impact tendency classification and under laboratory conditions, it can be processed on standard test piece of bias means Determination of the number. Its clauses include terms and definitions.
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Document preview — GB/T 25217.2-2010
National Standard of the People's Republic of China
- ICS
- 73.010
- Classification
- D 04
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 3.1 Coal impact tendency burstingliabilityofcoal
- 3.2 Dynamic failure time
- 3.3 Elastic energy index
1 Scope
This section GB/T 25217 specifies the terms and definitions and classification index measuring the impact orientation of coal involved, the impact of dumping coal
Classification and index anisotropy, equipment, specimen size, measured uniaxial compressive strength, dynamic failure time measurement, elastic energy index determination and punches
Impact energy index determination.
The impact of coal This section applies to coal impact tendency classification and under laboratory conditions, it can be processed on standard test piece of bias means
Determination of the number.
2 Normative references
The following documents contain provisions which, through reference GB/T 25217 in this section constitute provisions of this section. For dated reference documents
Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section
Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section.
GB/T 16414-2008 Mine scientific terms mechanics
GB/T 23561.1-2009 physical and mechanical properties of coal and rock measuring method - Part 1. General requirements Sampling
GB/T 23561.7-2009 physical and mechanical properties of coal and rock measuring methods - Part 7. Determination of uniaxial compressive strength and softening system
Calculation method
3 Terms and Definitions
The following terms and definitions apply to this part of the GB/T 25217 of.
3.1 Coal impact tendency burstingliabilityofcoal
The accumulation of deformation energy and coal have generated nature of impact damage.
Note 1. Overrides GB/T 16414-2008, definitions 4.12.
3.2 Dynamic failure time
DT Coal specimen in uniaxial compression state, from the ultimate strength to completely destroy the elapsed time.
[GB/T 16414-2008, the definition 4.9]
3.3 Elastic energy index
WET Coal specimens under uniaxial compression state, when the force reaches a certain value (before failure) unloading the elastic deformation energy of plastic deformation (loss
Energy) ratio distortion.
[GB/T 16414-2008, the definition 4.11]
SN/T 1537-2023 | GB/T 2007.1-1987 | GB/T 2007.6-1987 | GB/T 25217.8-2021 | GB/T 25217.9-2020 | GB/T 25217.11-2019 | […]
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 20 pages — is available in the English PDF.
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