Properly modeling the timing of the blast, visualizing timing contours, throw direction, and burden relief will help blasters reduce backbreak issues stemming from timing …
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WhatsApp: +86 18221755073Combined with the continuous-discontinuous element method (CDEM), the influence of rock strata on the failure mechanism of back-break was analyzed. The results …
WhatsApp: +86 18221755073Combined with the continuous-discontinuous element method (CDEM), the influence of rock strata on the failure mechanism of back-break was analyzed. The results show that structural failure...
WhatsApp: +86 18221755073Properly modeling the timing of the blast, visualizing timing contours, throw direction, and burden relief will help blasters reduce backbreak issues stemming from timing designs. Following the rules of thumb paired with …
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WhatsApp: +86 18221755073Breaking through rock is a common yet challenging task in excavation. It requires a careful blend of power, precision, and safety to ensure the job is done efficiently and without …
WhatsApp: +86 18221755073This problem can occur most severely when blasting up-dip parallels with the strike of the rock. This back break can also cause problems on drilling succeeding blasts, …
WhatsApp: +86 18221755073The role of the explosive has two functions in blasting: first, to break the rock, and second, to move it. As far back as 1963, it was known that borehole pressures reached in …
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WhatsApp: +86 18221755073One common factor in all blasts is back or side break. Simply put, back or side break is breakage that occurs OUTSIDE of the drill pattern. For example, if we are drilling on a …
WhatsApp: +86 18221755073Backbreak is the unintended fracturing or damage to the rock mass behind the final row of drill holes after a blasting operation. This phenomenon is undesirable as it can …
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WhatsApp: +86 18221755073The role of the explosive has two functions in blasting: first, to break the rock, and second, to move it. As far back as 1963, it was known that borehole pressures reached in excess of 2 million psi due to gas pressure. At the time, however, new high-speed cameras were developed and the shock wave produced by the explo…
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