Designed on Bionic Impact Compacting Bits Based on Bionic Non-smooth Theory

We designed bionic percussion-compact bits based on the theory of bionic non-smooth in order to improve the percussion-compact bits' penetration rate and reduce the loss of impact. Through the numerical simulation analysis, we revealed the ground stress characteristics, then the bits were produced and used them to do the field experiments. We take biological dung beetle as bionic prototype, and decorate regularly non-smooth morphology shape on the percussion-compact bits' surface, and then do the related tests. The results is that bionic percussion-compact bits of single impact penetration increases by about 45% which compare with the conventional percussion-compact bits, and the impact energy which is needed for unit footage fell by 47%. We can obtain greatly shorten the impact compaction borehole drilling cycle, and save the cost of drilling and remarkable social and economic benefit.