GB/T 25217.7-2019Methods for test, monitoring and prevention of rock burst—Part 7: Monitoring method of mining-induced stress (English PDF)
冲击地压测定、监测与防治方法 第7部分：采动应力监测方法
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
August 30, 2019
Implementation date
March 1, 2020
Scope
GB/T 25217.7-2019 is the English-translated version of 冲击地压测定、监测与防治方法 第7部分：采动应力监测方法.
GB/T 25217.7-2019 is the Chinese national method for monitoring mining-induced stress in coal mines subject to rock burst. It covers the terms and definitions, the monitoring schemes and the way the degree of rock burst danger is determined, and it applies to the monitoring of mining stress.
It defines mining-induced stress, the stress sensor, the monitoring point and its depth, the monitoring group and the rate of stress change.
It also states the main functions and technical parameters expected of a mining stress monitoring system, starting with online monitoring of coal and rock stress whose data are uploaded automatically to a surface server and stored as a time series.
It cites GB/T 7665-2005 and GB/T 16414-2008. Part 7 of GB/T 25217, it was issued on 30 August 2019 and has applied since 1 March 2020.
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Document preview — GB/T 25217.7-2019
National Standard of the People's Republic of China
- ICS
- 73.040
- Classification
- D 20
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and definitions
- 4 Mining stress monitoring program
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 part 7 of GB/T 25217.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This part of GB/T 25217 specifies the terms and definitions, monitoring schemes and impacts involved in mine ground pressure mining stress monitoring. The determination of the danger.
This part is applicable to the monitoring of mining ground pressure and mining stress.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest edition (including all amendments) applies to this document.
GB/T 7665-2005 sensor general terminology
GB/T 16414-2008 coal mine science and technology term rock mechanics
3 Terms and definitions
The following terms and definitions as defined in GB/T 7665-2005 and GB/T 16414-2008 apply to this document.
3.1 Mining-induced stress
The mining project affects the stress in the rock mass. [GB/T 16414-2008, definition 2.27]
3.2 Stress sensor
A sensor capable of measuring the stress of coal rock, usually composed of a stress sensitive component and a conversion component.
3.3 Monitoring point
The location where the sensitive components of the stress sensor are buried in the coal and rock mass.
3.4 Monitoring point depth
The vertical distance between the buried position of the sensitive component of the stress sensor and the surface of the alley.
3.5 Monitoring group
A collection of several monitoring points that are close in distance.
3.6 Stress change rate
The amount of change in stress at the monitoring point per unit time.
4 Mining stress monitoring program
4.1 Main functions and technical parameters of mining stress monitoring system
4.1.1 The stress of coal and rock can be monitored online, and the stress data is automatically uploaded to the ground server and stored in time series.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
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Related Standards
GB/T 16414-2008 — Terms relating to coal mining - Rock mechanics
GB/T 7665-2005 — General terminology for transducers
GB/T 25217.1-2010 — Methods for test, monitoring and prevention of rock burst - Part 1: Classification and laboratory test method on bursting liability of roof strata
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GB/T 25217.7-2019
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