GB/T 25217.12-2019Methods for test, monitoring and prevention of rock burst—Part 12: Prevention method of protective seam mining (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 the 12th part 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 of the method for controlling the impact pressure of the mining protective layer and the applicable conditions for the exploitation of the protective layer. And selection principle, protective layer mining design, protection scope and protection effect, pressure relief period.

This part is applicable to the prevention and control of impact ground pressure by mining protective layer in coal seam.

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.

AQ 1050 protective layer mining technical specification

3 Terms and definitions

The following terms and definitions apply to this document.