Low Vibration Blasting Methods With Continuous Slots

Experimental Study on the Effect of Damping Ditch on Reduction of Blasting Vibration in Urban Area Short-hole Controlled-blasting

“…The domestic and foreign scholars have conducted a lot of research on the damping ditch damping mechanism. Hagimori [5] etc through the contrast test research under the situation with or without damping ditch, results show that damping ditch damping effect reaches 60% to 80%.Fang Xiang [4] etc conducted 24 times blasting experiment under the condition with or without damping ditch and carried out based on the measured data of waveform analysis, spectral analysis, regression analysis, summarizing the influence laws of damping ditch to the duration of blasting vibration intensity, the vibration wave frequency and the vibration waves. Yi Chang-ping [3] etc using ANSYS LS-DYNA to simulate the damping ditch excavation position and excavation depth on the relationship between the damping effects.…”