WebMar 3, 2024 · Powder factor is defined as the amount of explosive required to dislodge and fragment 1 cubic yard of rock. Table 2 shows typical powder factors for surface blasting. Instead, Powder Factor Or Basic Design Patterns Are Used. • the designed powder factor was listed as 0.53, but from historical data a reasonable powder factor for previous ... WebJun 24, 2024 · ‘The blast design calculator utilizes user inputs – including burden, spacing, stemming height, sub-drill, hole diameter, bench height and explosive type – to determine explosive loads, powder factors and other outputs. ... The quick calculator includes a BME in-house formula for the target powder factor, as well as calculations related ...
Bench Blasting SpringerLink
http://www.iring.ca/_Knowledgebase/module_5_2_print.html WebFeb 28, 2011 · Figure 1: Kingery-Bulmash Relationship with Blast Test Data Points . Maximum credible event – A hypothesized worst-case accidental explosion, fire, or agent-release that is likely to occur from ... yield factor no less than 20% for LOX/RP-1 for siting of launch vehicles. Therefore, a launch operator may apply the 20% value to Vehicle A. earth stations many hands
How do you calculate a k-factor for explosives? - Answers
WebFeb 21, 2024 · 2. u0007For hole firing instantaneously along a row, the KS should be equal to 2; 3. u0007For holes firing on a delay, the KS should be between 1.0 and 2.0 – and typically between 1.2 and 1.8. This is … WebCalculate the powder factor for this blast. State any assumptions made. Question 2 A 30 m bench is required to be blasted for a large face shovel. The hole diameter is 270 mm and stemming is set to 20 times the hole . diameter. The burden has been set to 8.0 m and the spacing set to 9.0 m to . WebThe maximum linear overbreak of vault, spandrel, and haunch surrounding rock is decreased by 42.3%, 53.7% and 45.1%, respectively. The underbreak at the bottom of the upper face is reduced from ... earth station pulaski tn