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射流冲击器是一种新型的地质探钻具(见图1).它是我国于1972年首先研制的,现已推广使用.其结构是由一个能起自反馈振荡作用的水射流功率元件、活塞冲锤机构和砧子等主
Jet impactor is a new type of geological exploration drill (see Figure 1) .It was first developed in China in 1972, has been widely used.The structure is composed of a water jet from the feedback oscillation power components, Piston hammer mechanism and anvil and other main