%0 Journal Article
%T STUDY ON ROCK DRILLING BY SWIRLING JET<br>旋转射流破岩成孔规律研究
%A Bu Yuhuan
%A Wang Ruihe
%A Zhou Weidong
%A <br>步玉环
%A 王瑞和
%A 周卫东
%J 岩石力学与工程学报
%D 2003
%I 
%X Based on the previous research on structural and flow characteristics of swirling jet. the testing study is made to analyse the factors affecting rock breaking efficiency of swirling jet, such as pump pressure, jet distance, rock permeability and intensity, consistency of additive, etc. Meanwhile the distinction of the effects of rock permeability on swirling jet and straight jet is studied. The results show that rock breaking efficiency by swirling jet apparently increases with the decrease of rock strength and the increase of rock permeability at the same standoff distance and pump pressure. The rock permeability plays important role in the rock breaking effect of jet. The effect of rock permeability on the swirling jet is greater than that on the straight jet. Meanwhile the results show that the depth, diameter and volume of the hole drilled by swirling jet apparently increase at the beginning and decrease afterwards with the increase of consistency of additive. The most excellent consistency of additive is 200~300 mmp in this experiment.
%K explosion engineering
%K swirling jet
%K rock breaking effect
%K standoff distance
%K pump pressure
%K rock permeability
%K straight jet<br>爆破工程
%K 旋转射流
%K 破岩效果
%K 喷距
%K 射流压力
%K 渗透率
%K 普通圆射流
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=D3421FAA1A0A0F0C&jid=35E747D791A1346351AFB523B7FA35CB&aid=E32E5E950E443785&yid=D43C4A19B2EE3C0A&vid=BC12EA701C895178&iid=E158A972A605785F&sid=66D0A4667FE1A38D&eid=C6FC2A9EA7E6C4B9&journal_id=1000-6915&journal_name=岩石力学与工程学报&referenced_num=4&reference_num=4