The long and large-diameter uncharged hole-boring (LLB) method is a cut-blasting used to reduce vibration induced by blasting. This typically involves creating an hole with 382 mm diameter drilling 50 m in the tunnel excavation direction at time. reported provide relatively good reduction high blasting efficiency through short compared traditional cut methods. In this study, advanced LLB incorp...

Blasting operations involve some undesirable environmental issues that may cause damage to equipment and surrounding areas. One of them, probably the most important one, is flyrock induced by blasting, where its accurate estimation before operation essential identify blasting zone’s safety zone. This study introduces several tree-based solutions for an prediction flyrock. has been done using fo...

It is shown that when modeling a single interaction of an abrasive particle with the surface part in process collision under air (liquid) pressure, it necessary to take into account specifics impact-abrasive wear, separation wear preceded by metal destruction. In schematization contact during blasting, some commonality shot blasting and number assumptions typical for grinding, micro cutting gra...

Seeking the law of through-crack in double hole shaped charge can help reveal rock failure mechanism directional controlled blasting. Using LS-DYNA numerical simulation analysis, dynamic mechanical behaviors double-hole crack development and penetration elliptical bipolar linear-shaped blasting ordinary were compared studied. The results showed that it was difficult to form a straight line thro...

Front row burden is one of the key parameter to improve the bench blasting results. Improper design of the front row burden can create nuisances in the form of ground vibration, flyrock, back break or it may responsible for breakage of improper fragment size from the rockmass. Therefore, front row burden need to be optimised on the basis of proper scientific assessment. It has been proved that ...

In this work, a new drilling and blasting design methodology is introduced and applied at a case study mine to improve productivity. For the case study copper mine, a blast diameter of 203 mm is proposed to be used in the ore zone to meet the new required production rate of 90mtpa from 75mtpa. Currently, the Konya and Walter’s model is used to generate drilling and blasting design at a bl...

Modern graphics hardware is designed for highly parallel numerical tasks and provides significant cost and performance benefits. Graphics hardware vendors are now making available development tools to support general purpose high performance computing. Nvidia’s CUDA platform, in particular, offers direct access to graphics hardware through a programming language similar to C. Using the CUDA pla...

Cells have structure and the ability to move, thanks in part to the actin cytoskeleton, a dynamic cellular scaffolding that facilitates many cellular processes. Actin is mostly concentrated near the outer membrane of the cell, where it is involved in such processes as the formation of membrane protrusions at the leading edges of migrating cells, the movement of certain intracellular vesicles su...