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GB/T 25217.6-2019: Methods for test, monitoring and prevention of rock burst -- Part 6: Monitoring method of drilling bits
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| GB/T 25217.6-2019 | English | 199 |
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Methods for test, monitoring and prevention of rock burst -- Part 6: Monitoring method of drilling bits
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GB/T 25217.6-2019
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Basic data | Standard ID | GB/T 25217.6-2019 (GB/T25217.6-2019) | | Description (Translated English) | Methods for test, monitoring and prevention of rock burst -- Part 6: Monitoring method of drilling bits | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | D20 | | Classification of International Standard | 73.010 | | Word Count Estimation | 10,155 | | 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 25217.6-2019: Methods for test, monitoring and prevention of rock burst -- Part 6: Monitoring method of drilling bits
---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 6. Monitoring method of drilling bits
ICS 73.010
D20
National Standards of People's Republic of China
Impact ground pressure measurement, monitoring and prevention methods
Part 6. Drill cuttings monitoring method
Methodsfortest, monitoringandpreventionofrockburst-
Part 6. Monitoringmethodofdrilingbits
Published on.2019-10-18
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 part 6 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. Coal Science and Technology Research Institute Co., Ltd., Shandong Energy Group Co., Ltd., China Coal Energy Group Co., Ltd.
Company, Henan Dayou Energy Co., Ltd., Liaoning University.
The main drafters of this section. Zhao Shankun, Yan Minghua, Pan Yishan, Yan Hegang, Qi Qingxin, Guo Xinshan, Liu Jun, Ding Chuanhong, Li Haitao.
Impact ground pressure measurement, monitoring and prevention methods
Part 6. Drill cuttings monitoring method
1 Scope
This part of GB/T 25217 specifies the terms and definitions, instruments and equipment, construction workers involved in the monitoring method of coal mine impact ground cuttings.
Arts and impact hazard identification methods.
This section is applicable to the monitoring of drill cuttings in coal mines.
This section does not apply to coal seam moisture content is too high or coal seams are too soft.
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 16414 Coal Mine Science and Technology Terms Rock Mechanics
3 Terms and definitions
The following terms and definitions as defined in GB/T 16414 apply to this document.
3.1
Drill cutting method
Drilling holes in the coal seam, according to the amount of coal powder discharged per meter and its variation law and the related dynamic phenomena during the drilling process
A method of danger.
3.2
Pulverized coal volume drilingpowder
The weight of coal powder discharged per meter of borehole length.
3.3
Drilling depth drilingdepth
The length of the hole from the coal wall to the position of the measured coal powder.
3.4
Dynamic effect dynamiceffects
Card drilling, suction drilling, top drilling, abnormal sound and impact in the hole during the drilling process.
3.5
Normal pulverized coal volume normaldrilingpowder
The amount of coal powder measured in areas where there is no mining and geological structure.
3.6
Actual pulverized coal volume actualdrilingpowder
The amount of coal powder measured in the monitoring area.
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