GB/T 2008-1987
Active
NB/T 11467-2023
Active
Industry standards-Energy
NB/T 11467-2023 Ground Drilling, Expanded Drilling, and Gas Relief Technology Specification for Gas Extraction
NB/T 11467-2023 Ground Drilling, Expanded Drilling, and Gas Relief Technology Specification for Gas Extraction
Basic Information
Standard Code:
NB/T 11467-2023
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Geological and mineral exploration and development
ICS Name:
Mining and excavation
Publish Date:
2023-12-28
Implement Date:
2024-06-28
Scope
This document is applicable to the techniques of ground drilling, cavity excavation, and borehole enlargement for gas extraction during the pressure relief mining of protective layers in coal mines, as well as the enhanced gas extraction (from clean wells) technology.
Development Information
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