The South ore-bearing zone of Wushan copper mine is mined with ascending horizontal slicing hydraulic fill crosscut mining system. Roof falling and rib spalling occurred in any times.
武山铜矿南矿带采用上向水平分层进路水砂充填法回采，采场多次发生冒顶、片帮。
2
Roof falling and rib spalling occurred in any times. To predict roof falling, AE field tests have been conducted and AE monitor holes are laid out based on the block analysis.