大间距无底柱由于加大了进路间距，改善了巷道的应力集中状态，提高了回采巷道的稳定性。
Due to the increase in access space, the stress concentration state of roadway is improved and the stability of extraction opening is increased.
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。
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.
相邻充填体几乎均发生压坏现象，进路回采安全性差。
Meanwhile, almost all adjacent filling bodies have been damaged with poor mining security.
为此决定采用上向进路充填法进行回采。
Therefore, the upward drift stoping with backfilling is decided to use.
并提出了进路间隔回采方案，从技术和经济两方面作了详尽的可行性分析，为我国大量残留矿资源的回收探索了一条新路。
The interchanging tunnel mining method is suggested on bases of careful feasibility study in both technologically and economically. A new method is developed for recovering the large amount of o…
并提出了进路间隔回采方案，从技术和经济两方面作了详尽的可行性分析，为我国大量残留矿资源的回收探索了一条新路。
The interchanging tunnel mining method is suggested on bases of careful feasibility study in both technologically and economically. A new method is developed for recovering the large amount of o…
应用推荐