GA/T 651-2006
Abolished
DB61/T 1419-2021
Active
Shaanxi ProvinceLocal standards
DB61/T 1419-2021 Long-distance hydraulic tunnel control surveying and mapping technical specifications
DB61/T 1419-2021 Long-distance hydraulic tunnel control surveying and mapping technical specifications
Basic Information
Standard Code:
DB61/T 1419-2021
Standard Type:
Local standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Highway engineering
ICS Name:
Other standards related to road engineering
Publish Date:
2021-01-19
Implement Date:
2021-02-19
Pages:
42 pages
Scope
This document is applicable to the control measurement work of long-distance hydraulic tunnels with a face-to-face excavation length of more than 20 km. For tunnels with a face-to-face excavation length of more than 50 km, a special through-penetration measurement design should be carried out.
Development Information
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