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提出了用气举和自激振荡脉冲射流破碎器清淤的新方法 ,分析了气举和自激振荡脉冲射流的基本原理及脉冲射流在水下的动力特性。理论和实验表明 :在水下 ,振荡脉冲射流不仅能很好地破碎和疏散淤泥、土岩 ,而且为它们进入气举吸口提供了良好的周边环境。气举装备没有运动件 ,密封简易 ,不污染水质 ,既可用于湖泊、江河等的清淤 ,又可用于开挖管沟和海洋采矿 ,是一种值得开发的高新技术
A new method of dredging with gas lift and self-excited oscillating pulse jet breaker is proposed. The basic principle of gas lift and self-excited oscillating pulse jet and the dynamic characteristics of impulse jet under water are analyzed. Theoretical and experimental results show that, under water, the oscillating pulse jet can not only crush and disperse the silt and earth rock well, but also provide a good surrounding environment for them to enter the gas suction mouth. Gas lift equipment without moving parts, sealing is simple, does not pollute the water quality, both for lakes, rivers and other dredging, but also can be used for trench excavation and marine mining, is a worthy of development of high-tech