EVOLUTION AND STABILITY MECHANICS ANALYSIS OF THE ELLIPTICAL STRESS ARCH STRUCTURE IN THE SURROUNDING ROCKS OF THE UNDERGROUND MINING AREA

Evolution and stability mechanics analysis of the elliptical stress arch structure in the surrounding rocks of the underground mining area

Abstract After coal extraction in underground mining, progressive fracturing occurs in both roof and floor strata, resulting in stress redistribution within these rock layers.Considering the fractures in the strata at roof and floor, an elliptical stress arch was introduced.This concept analyzed how the shape and structure of this arch evolved when

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Student/learner discipline and bullying: a comparative analysis of legal risk management in schools in Australia and South Africa

This article briefly discusses some legal determinants that influence education inAustralia and South Africa, respectively.It is evident that schools whose hierarchy members fail to take the necessary steps to ensure a non-threatening environment may be held liable if negligence Industrial:Material Handling:Carts can be proven.The focus is therefor

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