GB/T 40259-2021
ActiveGeneral specification for supporting quality of longwall face
综采工作面支护质量检测技术条件
Application Summary AI generated
This standard specifies the technical conditions for detecting and evaluating the support quality of longwall faces in underground coal mines. It is applied to ensure the stability and safety of roof support systems, including hydraulic powered supports, by defining measurement methods, acceptance criteria, and monitoring requirements. The standard is used by mining engineers and quality inspectors during equipment installation, daily operation, and periodic maintenance of longwall mining systems.
Related Standards
JB/T 53574-1999
KQ Series Down-the-hole Drilling Rig - Product Quality Grading (Internal Use)
JB/T 53588-1999
WK–4 Excavator Product Quality Grading (Internal Use)
JB/T 53568-1999
Fixed Body Narrow Gauge Mine Car - Product Quality Grading (Internal Use)
JB/T 53562-1999
Planetary Drive Scraper Winch Loader - Product Quality Grading (Internal Use)
JB/T 53530-1999
ST/SD Series Shuttle Mine Car Product Quality Grading (Internal Use)
JB/T 53579-1999
Dump Mine Car Product Quality Grading
JB/T 53566-1999
Product Quality Grading for Single-Side Curved Rail Side-Dumping Mine Car (Internal Use)
JB/T 53589-1999
Grading of Product Quality for Bottom-Dump Mine Car
Transparency note: The application summary and key sentences on this page were automatically generated by AI from the standard's original text. This content has not been human-verified and should not be used for compliance or regulatory purposes. Always refer to the official standard document from the issuing authority.