GB/T 2007.1-1987
Active
NB/T 11938-2025
Active
Industry standards-Energy
NB/T 11938-2025 The determination of the radius of gas extraction from coal seams using the pressure drop method
NB/T 11938-2025 The determination of the radius of gas extraction from coal seams using the pressure drop method
Basic Information
Standard Code:
NB/T 11938-2025
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Health, safety, and labor protection
ICS Name:
Mining and mineral products comprehensive
Publish Date:
2025-12-18
Implement Date:
2026-06-18
Publisher:
国家能源局
Technical Committee:
能源行业煤矿瓦斯治理与利用标准化技术委员会
Development Information
Related Standards
GB/T 2007.2-1987
Active
GB/T 2007.2-1987 General rules for the sampling and sample preparation of minerals in bulk Sample preparation by manual method
GB/T 2007.3-1987
Active
GB/T 2007.3-1987 General rules for the sampling and sample preparation of minerals in bulk—Experimental method for evaluation of quality variation
GB/T 2007.4-1987
Replaced
GB/T 2007.4-1987 General rules for the sampling and sample preparation of minerals in bulk—Experimental methods for checking the precision
GB/T 2007.5-1987
Replaced
GB/T 2007.5-1987 General rules for the sampling and sample preparation of minerals in bulk—Experimental method for checking the bias of sampling
GB/T 2007.6-1987
Active