Laserfiche WebLink
sheet 1 of 2 <br />CIRCES Cost Estimating Software <br />SURFACE BLASTING WORK <br />PROJECT IDENTiFiCAT10N <br />Task #: 003 State :Colorado Permit/job # : C-1982-057 <br />Date : O&V.512008 _ County : Routt Abbreviation <br />- : none <br />User : JRS <br />Site : Seneca li-W Filename <br />--_._._ <br />- <br />- <br />- <br />---- : C057-003 _ <br />- <br />- <br />-- <br />..__.. <br />-- ------ <br />Agency or organization name : Colorado Division Of Reclamation, Mining And Safety --- <br />Permit or other job action :2008 Midterm Review <br />_.-------------- - ---..., <br />Task description : Drill and Shoot Sage Creek/Wolf Creek Pit Highwall <br /> <br />BLAST AREA DIMENSIONS <br /> QUANTITY j UNIT <br />Blast area configuration description- - ;Wedge-shaped mass <br />Blasting method description - - Cast blast <br />Highwall or bench face angle <br />- - 0.50 <br />- - <br />- h:1 v <br />- <br />--- <br />Regraded slope angle <br />_ _...... ..... . - ---- --- - --- - <br />--- 1.00 <br />- h:1v <br />- <br />- <br />-- ------- ----.. - - - - <br />Highwall or bench length - - - _ --- <br />1, 800 - __ .. . <br />: <br />feet <br />Highwall or bench width (from vertical line at base of desired cut on highwall face) 40 feet <br />Highwall or bench height (from pit floor to crest) <br />_._?._.__ ---_ .. ----- _ - ----- ... ---- _ -- - - - -- .. _._ . - - - 110.0 <br />- feet <br />_- <br />Depth to base of cut at highwall face - ---- <br />40.0 --- <br />feet <br /> <br />BLAST AREA VOLUMES <br /> QUANTITY UNIT <br />Total volume of dimensional mass to be shot 26,667 cubic yards _ <br />Blast volume to subdrill grade and blast pattern lines -25.208 cubic yards <br />Blast volume to finish grade and blast pattern lines I -21,262 'cubic yards <br />i_.._ <br />Remaining volume required to be re-shot or ripped 47,929 <br />'cubic yards <br /> <br />BLAST AREA DESIGN <br /> QUANTITY UNIT <br />Recommended blasthole diameter <br />. <br />... -- ............. .-._-----. - 5.88 inches <br />.. _..__ <br />---_. <br />Selected blasthole diameter <br />' 9.87 <br />inches <br />Subdrillin allowance <br />- 6.3 feet <br />------- <br />__--- - ------ -- - -- - -- <br />Blasthole depth (avg. depth of holes on wedge-shaped mass) --- -- <br />26.3 , . _..._ ..-- ------ <br />feet <br /> <br /> <br />Density of rock ...... <br />._. <br />Average Dense <br /> <br />Rirock dense <br />Burden to Charge Diameter Ratio 25 times diameter <br />.-_.-_-- <br />Burden <br />21-0 <br />feet <br />Spacing to Burden Ratio 1.1 ;times burden <br />- ._. --- --.. <br />Spacing ........... <br />23.0 'feet <br />Cubic yards of rock per blasthole (avg. quantity per hole on wedge-shaped mass) 147.30 cubic yards <br />Powder factor description <br />_ <br />__ <br />. <br />. Medium rock strength <br />. <br />_ <br />_ <br />... __....... _ <br />Powder factor <br />- - -------- --- ----- _ <br />0.575 <br />pounds/cu_yd. <br />Density of blasting agent 0.85 , rams/cc <br />Quantity of explosives per blasthole (avg. quantity per hole on wedge-shaped mass) 0.00 pounds <br />Height of powder column per b#asthole (avg. height per hole on wedge-shaped mass) 100 feet <br />Height of stemming per blasthole (avg. height per hole on wedge-shaped <br />mass) 23.30 feet <br />- <br />Stemming to burden ratio (avg_ratio per hole on wedge-shaped <br />mass) I'll times burden <br />_ <br /> <br />Quantity of stemming <br />per blasthole (avg. quantity per hole on wedge-shaped mass) <br /> <br /> <br />.0000 _ <br />- <br /> <br />cubic yards <br />Number of rows 0 rows <br />? <br /> <br />Number of blastholes per row f <br />- - - - .. .. . __. _.._ <br />_. 78 <br /> <br />... .- <br />...._ ._.... - <br />holes per row <br />Total number of blastholes 0 holes <br />Total length of all blastholes 2,051 feet