# Investigation of Fault Effect on Blast-Induced Vibration
###### Abstract
showed that the attenuation rate of the vibration velocity and energy attenuation of the blasting vibration increased with increasing joint degree. Based on this result, they mentioned that the structural parameters of the rock mass (such as the number of joints) had a significant impact on the attenuation law of blasting vibration in their research paper [6]. [PERSON] et al. measured vibrations from blasts of two different benches located in front of and behind the fault zone. Two geophones were used to take measurements. The first bench was situated on the same side of the fault. Accordingly, the vibration velocities of the blasts in the first bench are higher than the vibration velocities of the blasts in the second bench, located on the opposite side of the fault. They said that attenuation was stronger for first bench measurement points that for second bench measurement points [12]. [PERSON] and [PERSON] emphasize that theoretical forecasting and then experimental discovery of the pendulum waves immediately associated with the stress-strain state of rocks has spurred the development of brand-new methods and means for integrated seismic-deformation electromagnetic monitoring of natural and induced earthquakes, rock bursts and other seismic events, as well as for the enhanced oil recovery due to vibration treatment [13]. [PERSON] and [PERSON] validates the energy approach to describing transformation of elastic energy of destructive event source areas into kinetic energy of structural elements of these areas. The authors introduce a new notion of interference seismic emission events [14]. However, there are only a few studies regarding the vibration wave propagation characteristics of structural planes in literature. Studies on the vibration effects of blasting have described the transmission and reflection of the stress wave on the surface of the structure using theoretical analysis and have focused primarily on the amplitude attenuation effect of structures on the stress wave [6; 15; 16; 17]. Therefore, there is a need to research the effect of rock mass properties, such as fault, on the blast vibration attenuation. In addition, the influence of rock structures on the propagation of vibration attenuation should be analyzed accurately. In this study, 11 blasts in a limestone quarry were monitored to produce a total of 42 measurements of vibration in two different directions. The measurement directions were determined considering the location of the fault zone. According to this, directions were selected as Northwest and Southwest. There is not a fault zone between the blasting area and the geophone locations in the southwest, while the fault zone is between the blasting area and the geophone in the northwest direction. The data set was analyzed using USBM empirical estimation model and compared each other according to directions. This research aims to estimate the propagation distances of the particle velocities, which will occur in the ongoing blasting operations at this quarry, based on the geological conditions. For this reason, the effect of the fault zone has been investigated on blast-vibration propagation.