贵州遵义长沟锰矿采用长壁式崩落法的探讨

房柱法是开采矿石和顶板都较稳固的缓倾斜薄矿体的采矿方法。随着开采深度加大和地压增加,房柱法采场宽度越来越小,矿柱所占比重越来越大,回采率降低,矿石损失较大。特别是不很稳固的顶板容易冒落,安全没有保障。随着单体液压支柱的成熟运用,采用长壁式崩落法回采深部顶板不稳固的缓倾斜薄矿体,更加安全、高效。

A Discuss of Longwall Caving Method in Changgou Manganese Mine

The way of ＂room and pillar＂ is the mining of ore and top tray which is more stable and gentle in the inclined and thin ore body.As the development of the mining depth-increasing and the pressure to increase,the stope pillar width gets smaller while the proportion becomes larger.And the stoping rate decreased with the ore loss and larger.It is not a very solid roof with easy caving and insecurity.With the mature use of single hydraulic prop,we adopt longwall in caving mining and deep roof with the ore body unstable slowly,as is inclined,thin,more safe and high efficient.