PDF(1452 KB)
PDF(1452 KB)
PDF(1452 KB)
8.5 m超大采高综采面回采巷道合理煤柱宽度分析
Analysis on the Reasonable Protection Coal Pillar Width in 8.5 m Large Mining Height Workface Recovery Roadway
| {{custom_ref.label}} |
{{custom_citation.content}}
{{custom_citation.annotation}}
|
/
| 〈 |
|
〉 |