Laserfiche WebLink
<br />,~ <br /> <br />_17_ <br />Once [his final site specific propogation equation is determined, the site <br />specific modified scaled distance equation can be established by solving the <br />equation for a peak particle velocity of one inch per second. This is <br />accomplished by solving fthe relationship: <br />11ogHl s <br />Sf Anti-log 11 g J D/W~ (11; <br />Where: <br />H ~ corrected velocity intercept <br />Sf = scaling factor <br />D ~ distance from target to blast <br />W = maximum weight explosive per delay <br />B = decay constant (always positive number) <br /> <br />The equation is then finally transformed into the more familiar form, <br />W CD/Sf)2 <br />(12) <br />and the determination of a site specific modified scaled distance equation is <br />complete. <br />EXAMPLE 4: The Energy Fuels Corporation has requested a site specific <br />modified scaled distance formula and they have obtained sufficient seismic <br />data to perform a regression analysis. They are not exactly sure how to <br />perform the calculations so they request the regulatory authority's assistance <br />in deriving the site specific equation. What will the site specific scaled <br />distance formula be? <br />Overburden Blasting Data <br /> Peak Particle <br />Shot Number Scaled Distance Velocity (IPS) <br /> (D; ') <br />1 36.8 .15 <br />2 18.4 .58 <br />3 51.3 .O7 <br />4 218 .03 <br />5 18.7 .71 <br />6 200 .03 <br />7 185 .03 <br />8 54 .OS <br />9 83 .10 <br />10 18 .51 <br />11 19.5 1.82 <br />12 26 .25 <br />13 15 .]9 <br />14 62 .72 <br />IS 3.1 9.62 <br />16 10.5 .55 <br />17 34.9 .27 <br /> <br />