GB/T 25217.3-2019 English PDF

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GB/T 25217.3-2019: Methods for test, monitoring and prevention of rock burst -- Part 3: Classification and laboratory test method on bursting liability of coal-rock combinations sample
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 25217.3-2019	279	Add to Cart	3 days	Methods for test, monitoring and prevention of rock burst -- Part 3: Classification and laboratory test method on bursting liability of coal-rock combinations sample	Valid

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GB/T 26127   GB/T 25211   GB/T 25210   GB/T 25217.8   GB/T 25217.9   GB/T 25217.11   

Basic data

Standard ID: GB/T 25217.3-2019 (GB/T25217.3-2019)
Description (Translated English): Methods for test, monitoring and prevention of rock burst -- Part 3: Classification and laboratory test method on bursting liability of coal-rock combinations sample
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D20
Classification of International Standard: 73.010
Word Count Estimation: 14,147
Date of Issue: 2019-10-18
Date of Implementation: 2020-05-01
Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration

GB/T 25217.3-2019: Methods for test, monitoring and prevention of rock burst -- Part 3: Classification and laboratory test method on bursting liability of coal-rock combinations sample

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Methods for test, monitoring and prevention of rock burst--Part 3. Classification and laboratory test method on bursting responsibility of coal-rock combinations sample ICS 73.010 D20 National Standards of People's Republic of China Impact ground pressure measurement, monitoring and prevention methods Part 3. Impact tendency of coal and rock composite test pieces Classification and index determination method Methodsfortest, monitoringandpreventionofrockburst- Part 3. Classification andlaboratorytestmethodonbursting Published on.2019-10-17 2020-05-01 implementation State market supervision and administration China National Standardization Administration issued

Foreword

GB/T 25217 "Method for measuring, monitoring and controlling impact ground pressure" is divided into 14 parts. --- Part 1. Determination of impact tendency classification and index of roof rock formation; --- Part 2. Determination of the impact tendency of coal and the method of determining the index; --- Part 3. Determination of the impact tendency classification and index of coal and rock composite test pieces; --- Part 4. Microseismic monitoring methods; --- Part 5. Geophone monitoring methods; ---Part 6. Drill cuttings monitoring method; ---Part 7. Mining stress monitoring method; --- Part 8. Electromagnetic radiation monitoring methods; ---Part 9. Coal seam water injection prevention methods; --- Part 10. Coal seam drilling pressure relief method; --- Part 11. Coal seam pressure relief blasting prevention methods; --- Part 12. Prevention and control methods for mining protective layers; --- Part 13. Prevention and treatment of roof deep hole blasting; --- Part 14. Roof hydraulic pressure cracking prevention methods. This part is the third part of GB/T 25217. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part is proposed and managed by the China Coal Industry Association. This section drafted by. Tiandi Technology Co., Ltd., Coal Science and Technology Research Institute Co., Ltd., Liaoning University of Engineering and Technology, Liaoning University, Shandong University of Science and Technology, China University of Mining and Technology (Beijing). The main drafters of this section. Pan Junfeng, Qi Qingxin, Yang Lei, Pan Yishan, Tan Yunliang, Zhao Yixin, Xia Yongxue, Liu Shaohong, Zhang Chenyang, Jiang Junjun. Impact ground pressure measurement, monitoring and prevention methods Part 3. Impact tendency of coal and rock composite test pieces Classification and index determination method

1 Scope

This part of GB/T 25217 specifies the terms and definitions of the impact tendency classification and index measurement of coal and rock composite test pieces. Classification of impact tendency and index measurement of coal and rock composite test pieces, specification requirements of instrument equipment, combined test pieces and impact tendency of combined test pieces determination. This section applies to the determination of the impact tendency of coal and rock composite test pieces.

2 Normative references

The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article. Pieces. For undated references, the latest edition (including all amendments) applies to this document. GB/T 23561.1-2009 Determination of physical and mechanical properties of coal and rock - Part 1 Methods of determination of physico-mechanical properties of coal and rock - Part 7. Determination of uniaxial compressive strength and softening systems Number calculation method GB/T 25217.2-2010 Methods of measurement, monitoring and control of impacts - Part 2. Classification and index of impact of coal Measuring method

3 Terms and definitions

The following terms and definitions apply to this document. 3.1 Coal and rock combination test piece coal-rockcombinationssample Laboratory standard test piece formed by coal and rock combination. 3.2 Impact tendency of coal and rock composite test pieces burstingliabilityofcoal-rockcombinationssample The coal-rock combination test piece has the property of accumulating deformation energy and generating instantaneous impact damage. Note. Rewrite GB/T 16414-2008, definition 4.12. 3.3 Residual energy index residualenergyindex WRE The ratio of the peak elastic energy density to the post-peak failure energy density of the coal-rock composite specimen under uniaxial compression.

4 Classification and index of impact tendency of coal and rock composite specimens

The strength of the impact tendency of the coal-rock composite test piece is measured according to the measured residual energy index. Coal rock combination test piece impact tendency Sex is classified into three categories according to the size of its index value, as shown in Table 1. ......

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