MT/T 689.1-1997
Active
NB/T 11262-2023
Active
Industry standards-Energy
NB/T 11262-2023 Classification indexes and roadside support modes of gob-side entry in coal mine
NB/T 11262-2023 Classification indexes and roadside support modes of gob-side entry in coal mine
Basic Information
Standard Code:
NB/T 11262-2023
Standard Type:
Industry standards
Standard Status:
Active
is_force_gb:
no
CCS Name:
Mining
ICS Name:
\nTunneling and laying pipeline equipment
Publish Date:
2023-05-26
Implement Date:
2023-11-26
Pages:
16 pages
Scope
This document specifies the indicators and types of sidewall support for longwall mining in coal mines, the classification method, commonly used sidewall support methods, and the technical requirements for sidewall support.
This document is applicable to the determination of classification indicators and support methods for sidewall support in longwall mining in coal mines.
Development Information
Referenced Standards
GB/T 23561.7-2009 Methods for determining the physical and mechanical properties of coal and rock—Part 7:Methods for determining the uniaxial compressive strength and counting softening coefficient
DB/T 14-2018 Specification of hydraulic fracturing and overcoring method for in-situ stress measurement
Related Standards
MT/T 689.2-1997
Active
MT/T 689.2-1997 Plough—Specification of type inspection
GB/T 5621-1999
Replaced
GB/T 5621-1999 Test methods of performance for rock drilling machines and pneumatic tools
GB/T 13343-2008
Active
GB/T 13343-2008 Blast hole tricone rock bits
GB/T 5621-2008
Active
GB/T 5621-2008 Test methods of performance for rock drilling machines and pneumatic tools
GB 25518-2010
Active