water jet efficiency

Research on High Pressure Water Jet Cutting to Improve Gas Drainage Efficiency

高压水射流割缝提高瓦斯抽放效率的研究

Coal cutting equipment also known as high pressure hydraulic slotting machine is a set of equipment to improve low permeability coal seam gas drainage efficiency, which utilizes high pressure water jet technology to drill and cut seam in coal mining process.

煤矿割缝设备又称高压水力割缝机，是在煤矿开采过程中利用高压水射流技术进行钻孔和割缝，从而提高低渗透煤层瓦斯抽放效率的一套设备。

Swirling water jet is a high-pressure water through the nozzle from the orientated impeller inside the drill which is a diffusive jet with the three-dimension speed moving along the spiral line and has a particular structural properties and high rock-breaking efficiency.

旋转水射流是高压水经过钻头内部的导向叶轮从喷嘴脱离后形成的具有三维速度、沿螺旋线运动的扩散性射流，其结构特性独特，破岩效率高。