Full-Text Search:
Home|About CNKI|User Service|中文
Add to Favorite Get Latest Update

Selection of mining methods for the extraction of low-grade steeply dipping orebodies with medium thickness or less

Zhou Li;Ou Renze;Lin Weixing;Song Jiadong;Hou Jun;Changsha Institute of Mining Research Co.,Ltd.;National Engineering Research Center for Metal Mining;Chanchun Gold Research Institute;  
Because of the stoping of hanging side copper orebody and the water from filling slurry,the integrity of low grade lead-zinc orebody west the No.5 exploration line suffered great damage and its ore-bearing rock stability decreased greatly in Huogeqi copper mine.At the same time,the ore grade is low and the extraction is difficult.According to technical and economic analysis,the method of top slicing and filling stoping with pillars was recommended to stope the orebody with medium thickness or less.The stope production capacity was 250 t/d,the ore loss ratio was16 %,the ore dilution ratio was 8 %-10 % and the mining cost was 84.43 yuan/t.Take the 1 630 m level for example,it could create 27.094 5 million yuan profits to use top slicing and filling stoping with pillars.
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©CNKI All Rights Reserved