Quantitative Estimate of Rotary-Percussion Drilling Efficiency in Rocks
V. N. OPARIN, V. V. TIMONIN, V. N. KARPOV
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
Keywords: количественный показатель эффективности, разрушение горных пород, погружной пневмоударник, буровой станок, ударно-вращательное бурение скважин, волны маятникового типа, безразмерное энергетическое условие, структура, напряженно-деформированное состояние, quantitative index of efficiency, rock destruction, downhole air drill hammer, drilling rig, rotary-percussion hole drilling, pendulum waves, dimensionless energy criterion, structure, stress state
Abstract
The factors that have significant influence on efficiency of rotary-percussion rock drilling with downhole machines are discussed. The results obtained in physical simulation of dynamic driving of rock-breaking indenters in rocks are reported. The results are analyzed from the standpoint of the phenomenon of alternating response of rocks to dynamic impacts.
|
