摘要
提出了一种用气举和自激振荡脉冲射流相结合的方式开采潜水层滨海砂矿的新方法。研究了气举的物理模型 ,探讨了自激振荡脉冲射流作为气举装置破碎器的可行性。理论和实验表明 :自激振荡脉冲射流不仅能破碎水下土岩层 ,而且能松散砂矿颗粒 ,使砂矿颗粒易于进入气举吸头。
The method using the airlift and the self-excited oscillation jet for exploiting deep beach placer has been presented.The physical model of airlift is given in this paper.The feasibility of the self-excited oscillation pulsed jet as breaker of the airlift is researched.It has been shown theoretically and experimentally that the self-excited oscillation pulsed jet not only crushes and looses ore deposit under water,but also lifts particles of solid on the clay and sand bed.The oscillation cross flow caused by the self-excited oscillation jet makes partcles of solid enter the end of the suction pipe.
出处
《江苏煤炭》
2000年第1期41-44,共4页
Jiangsu Coal
基金
国家自然科学基金!59874 0 337
关键词
滨海
砂矿
采矿
气举
自激振荡
脉冲射流
airlift
beach placer
self-excited oscillation
jet
nozzle
