GB/T 2007.1-1987
Active
GB/T 51277-2018
Active
National standards
GB/T 51277-2018 Standard for construction and acceptance of coal mine shaft of freezing method
GB/T 51277-2018 Standard for construction and acceptance of coal mine shaft of freezing method
Price:
$ 30
Basic Information
Standard Code:
GB/T 51277-2018
Standard Type:
National standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
The raw materials industry and communication and broadcasting engineering
ICS Name:
Mining and mineral products comprehensive
Publish Date:
2018-01-16
Implement Date:
2018-09-01
Pages:
57 pages
Scope
This standard is applicable to the construction and quality acceptance of frozen shafts in vertical wells with a freezing point higher than -2°C, a groundwater flow rate of less than 5m/d, a ground temperature of less than 35°C, an alluvial layer thickness of less than 700m, and a freezing depth of less than 950m
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
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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