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<br />_17_ <br />Once this 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 the rela1tionship: <br />log H J (ll) <br />$f ~ Anti-log 8 D/W s <br />Where: <br />N ' corrected velocity intercept <br />Sf scaling factor <br />D distance from target to blast <br />W maximum weight explosive per delay <br />8 ' decay constant (always positive number) <br /> <br />The equation is then finally transformed into the more familiar form, <br />W (D/Sg)2 <br />(12) <br />and the determination of a site specific modified scaled distance equation is <br />complete. <br />E7{AMPLE 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 />Shot Number <br />1 <br />2 <br />3 <br />4 <br />5 <br />6 <br />7 <br />8 <br />9 <br />10 <br />11 <br />12 <br />13 <br />14 <br />15 <br />16 <br />17 <br /> Peak Particle <br />Scaled Distance Velocity (IPS) <br />(D <br />36.8 .15 <br />18.4 .58 <br />51.3 .07 <br />218 .03 <br />18.7 .71 <br />200 .03 <br />185 .03 <br />54 .08 <br />83 .10 <br />18 .51 <br />19.5 1.82 <br />26 .25 <br />15 .79 <br />62 .72 <br />3. 1 9.6 2 <br />10.5 .55 <br />34.9 .27 <br /> <br />_..~... <br />