基于蜗轮蜗杆伸缩方式的钻孔水力开采钻具设计

钻孔水力开采技术具有建矿周期短、环保、采矿费用低、工作深度大等优势，在我国贫矿、深部矿等资源的开发利用方面，有广阔的应用前景。本文总结了传统水力开采钻具的工作特点，分析了固定式喷嘴对开采效率的影响，介绍了本课题组的研究成果，并在此基础上研制了具有自主知识产权的基于蜗轮蜗杆伸缩方式的钻孔水力开采钻具，该钻具实现了水力喷射装置的伸缩运动，实现了靶距的可控调节，从而增加了单孔采矿区域，提高了开采效率。

Drilling Tool Design for Hydraulic Borehole Mining Based on Telescopic Manners of Worm and Worm Wheel

Hydraulic borehole mining provides the advantages of short construction period, environmental protection, low mining cost and great working depth, etc. It has a broad application prospect in the exploitation and utilization of the resources at poor and deep mines in China. In this paper, the characteristics of the traditional hydraulic drilling tools are summarized, the influence of the fixed nozzle on the mining efficiency is analyzed, and the research results are introduced. Based on this, a hydraulic borehole mining drill of independent intellectual property rights was developed according to the telescopic manner of the worm and worm wheel. The drilling tool allows the telescopic movement of the hydraulic jetting device and ensures the adjust of the target distance, thereby increasing the single hole mining area and improving the mining efficiency.