大煤柱 meaning in English
barrier
Examples
- Analyzing to the phenomenon of underground pressure and the stress of surrounding rock in roadway protecting pillar
大煤柱护巷矿压显现规律及围岩应力实测分析 - Numerical simulation on roadway protected by wide coal pillar in super - wide and isolated island fully mechanized top - coal caving face
综放面大煤柱护巷的数值模拟