GB/T 25217.6-2019Methods for test, monitoring and prevention of rock burst—Part 6: Monitoring method of drilling bits (English PDF)

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.

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 document. 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.