%0 Journal Article
%T APPLICATION OF STAGED BURN-CUT IN SHAFT BLASTING IN LIMESTONE<br>分层分段直眼掏槽在石灰岩井筒爆破中的应用研究
%A Shan Renliang
%A Ma Junping
%A ZhaoHua
%A Li Ren
%A WangXiaoming
%A Fu Tianhui
%A <br>单仁亮
%A 马军平
%A 赵华
%A 李仁
%A 王晓明
%A 付天会
%J 岩石力学与工程学报
%D 2003
%I 
%X Field experiments of vertical staged cutting with a duplex-triangle, with a duplex-square, and with millisecond delay in a hole are reported in this paper. It is found that the staged cut with duplex-square has the best blasting effect in trial shafts sinking. This experimental result is analyzed with the existing achievements of rock dynamics. In addition, our experiments also indicate that the best depth of blast hole is close to shaft radius.
%K roadway engineering
%K shaft
%K blasting in medium and deep holes
%K stage-by-stage cutting
%K vertical hole cutting<br>井巷工程
%K 立井
%K 中深孔爆破
%K 分层分段
%K 直眼掏槽
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=D3421FAA1A0A0F0C&jid=35E747D791A1346351AFB523B7FA35CB&aid=5E2F9CFE9B62E1A4&yid=D43C4A19B2EE3C0A&vid=BC12EA701C895178&iid=E158A972A605785F&sid=9BF3B0483F192149&eid=DB7B2C790D19BE6E&journal_id=1000-6915&journal_name=岩石力学与工程学报&referenced_num=1&reference_num=8