浅孔留矿与中深孔崩落联合采矿法在后沟金矿的应用

Application of combined short hole shrinkage and medium length hole caving method in Hou Gou Gold Mine

后沟金矿为一缓倾斜中厚矿体，其顶板直接或者间接与Ｆ５断裂带接触，给采矿方法的选择带来困难。后沟金矿采用平底结构浅孔留矿法先采矿房，后用中深孔崩落法回采矿柱，经两年多的生产实践，取得较好的技术经济指标。

Hou Gou gold deposit belonged to gentle dip and medium thickness orebody whose roof came directly or indirectly into contact with fracture zone F5 which brought on great difficult to the selection of mining method.As a result,the short hole shrinkage method with flat bottom structure was employed to mine the stope firstly,then stoping ore pillar by medium length hole caving method.Through this practice for two years,a better techno economic index was achieved