نتایج جستجو برای: rock blasting

تعداد نتایج: 40275  

Rock formations and structures can be subjected to both static and dynamic loadings. Static loadings resulting from different sources such as gravity and tectonic forces and dynamic forces are intermittently transmitted via vibrations of the earth’s crust, through major earthquakes, rock bursts, rock blasting and drilling and also, traffic. Reaction of rocks to cyclic and repetitive stresses re...

Journal: :BHM Berg- und Hüttenmännische Monatshefte 2019

Journal: :REM - International Engineering Journal 2020

Journal: :Вісник Дніпропетровського університету. Геологія, географія 2018

Journal: :Minutes of the Proceedings of the Institution of Civil Engineers 1875

Journal: :Mining of Mineral Deposits 2021

Purpose. To develop a new theory for the rocks destruction by blasting using description of formation processes zones with various mass state around charging cavity. Methods. The rock has been developed based on use well-known elasticity laws and main provisions quasi-static-wave hypothesis about mechanism solid medium under action. models crumpling, intensive fragmentation fracturing that aris...

Journal: :Rock Mechanics and Rock Engineering 2022

The worldwide mining industry consumes a vast amount of energy in reduction fragment size from to mineral processing with an extremely low-energy efficiency, particularly ore crushing and grinding. Regarding such situation, this article describes the effects rock fragmentation by blasting on consumption, productivity, minerals’ recovery, operational costs whole chain processing, sustainability ...

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