摘要
房柱法是缓倾斜中厚以下矿体主要开采方法之一，在我国金属矿山普遍采用，且多为浅孔落孔．为克服常规浅孔房柱法采切比大，采准时间长，矿石损失率高的不足，设计改变其浅孔落矿方式为预切而中深孔落矿，通过3个采场的试验，较好地解决了上述问题．并对新的采矿方法进行了分析评价．
Room and pillar method is one of the major methods for gentle orebody of medium thickness,and room and pillar method with shallow blasting has found application extensively in metal mines. Bigger mining ratio, longer preparatory work and higher loss are major technological problems encountered in the method with shallow blasting, such problems can satis factorily be solved by new room and pillar method with medium-length hole. In addition, this paper also offers appraisal for the new method.
关键词
房柱法
缓倾斜中厚矿体
落孔
工业试验
金属矿
room and pillar method with medium-length hole, gentle orehody of medium thickness,avalanche fashion
