Author(s): LIU Guo-jing
Pages: 45-49
Year: 2015 Issue:  7
Journal: Exploration Engineering(Rock & Soil Drilling and Tunneling)
Keyword:  accumulative hydro-hammer; coring drilling; impact energy; energy efficiency;
Abstract: Accumulative hydro-hammer is of reacting type with low energy consumption, small displacement, large impact power and high energy efficiency.Take the example of internal valve structure, the paper introduces the hydraulic accumu-lative hydro-hammer about its structure features and working principles, and elaborates the developing process, technical advantages and application effects.The existing problems and the improvement suggestions are also put forward.