崩落回采技术在富家矿低品位边翼矿体中的应用

Application of caving mining technology in the low-grade ore body at the wings of Fujia Mine

富家矿翼部4勘探线-12勘探线矿体为较破碎的急倾斜中厚矿体,针对其无法形成大规模开采、品位低等特点,结合矿山开采现状,经论证选用小分段中深孔崩落与自然冒落相结合的崩落回采技术进行回采。详细介绍了采准切割工程布置、回采工艺及崩落技术要点等,并就回采过程出现的问题进行探索,给出了合理的解决措施。工程应用表明:根据不同矿体赋存条件,采用灵活多变的崩落回采工艺,共回收矿石39460 t,产值达3680.2万元,经济效益显著。

The ore bodies at 4th exploration line-12th exploration line at the wings of Fujia Mine are relatively fragmented steeply inclined medium-thick ore bodies,which can not be mined in large scale and are low-grade.Based on the characteristics and current status of mining,the caving mining technology that combines caving and block caving was chosen through discussion.The paper in detail introduced the layout of mining preparation cutting project,mining processes and the key points of caving technology,while the problems taking place in mining are explored as well as their solutions.Engineering application shows that flexible caving mining processes are used according to the occurrence conditions of copper bodies,and 39460 t ores have been mined,creating 36.802 million yuan profits,which are significant economic benefits.