单管分层开采
single-string selective zone production
带压开采
under pressure mining
Mining with Water Pressure
Mining wyth pressure
mining under water pressure
mining under high pressure
coal mining with water pressure
mining under safe water pressure of aquifer
mining with pressure
common pressure mining
mining above aquifer
mining above the confined aquifer
带水压开采
Mining with Water Pressure
大露天常规开采
Conventional mining for large open pit
大采高综放开采
fully-mechanized top coal caving with great mining
Full-mechanized Caving Mining with Large Mining Height
longwall top coal caving with high cutting height
次要开采阶段
Subordinate Phase of Production