NB/T 11635-2024 Active
NB/T 11635-2024 Measuring method for effective radius of gas emission drilling in coal seam
Abstract
This document specifies the preparation before the determination of the effective discharge radius of coal seam gas discharge boreholes by the drilling natural gas flow method and the drill cuttings gas desorption index method, the arrangement of boreholes, the determination process, and the determination principles, etc.
This document is applicable to the determination of the effective discharge radius of coal seam gas discharge boreholes in outburst coal seams. The determination of the effective discharge radius of gas discharge boreholes in cross-seam coal seams and the determination of the effective discharge radius of gas discharge boreholes in non-outburst coal seams can be implemented with reference to this document.
General Product Information
| Document Type | Industry standards-Energy |
|---|---|
| Standard Status | Active |
| Standard Code | NB/T 11635-2024 |
| CCS | Health, safety, and labor protection |
| ICS | Occupational safety and industrial hygiene |
| Implement Date | 2025-03-24 |