Laserfiche WebLink
Blasting Impacts and Rock Slope Stability Assessment for Cottonwood Quarry in Grand County,CO <br /> Abbreviations: <br /> SH=Shear vmve,horizontal <br /> SV=Shear v wi%vertical <br /> R =Rayleigh wave <br /> P =Compressional wave <br /> s0*� P <br /> �� SH <br /> SV <br /> haW a <br /> ng <br /> C or <br /> Charge otlw <br /> Impulsive <br /> Dislurbanoe <br /> Figure 3.1—Typical Vibration Waves <br /> Velocity of Particle Motion or Air Overpressure Plotted <br /> with respect to time <br /> 1 CYCLE <br /> No <br /> a T <br /> a <br /> JBa&.9r-nd <br /> NolftBase <br /> `o Line <br /> Peak <br /> a Amplitude <br /> Event Duration <br /> go aw <br /> TIME <br /> Figure 3.2—Idealized Vibration or Air Overpressure Time—Intensity History Plot <br /> The intensity of ground motion can be measured in several ways.These measures include: <br /> • Particle displacement <br /> • Particle velocity <br /> Particle acceleration <br /> Vibration frequency <br /> REVEY Associates,Inc. Page 5 April 2004 <br />