Finding Forces Required to Changing Air Hammer Path in Soil
B. B. DANILOV1, B. N. SMOLYANITSKY1,2, A. I. CHANYSHEV1,3, D. O. CHESHCHIN1
1Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Krasnyi pr. 54, Novosibirsk, 630091 Russia
2Siberian State Transport University, ul. D. Kovalchuk 191, Novosibirsk, 630049 Russia
3Novosibirsk State University of Economics and Management, ul. Kamenskaya 56, Novosibirsk, 630099 Russia
Keywords: скважина, пневмопробойник, отклоняющее устройство, жесткопластическая среда, условие Кулона - Мора, предельные нагрузки, hole, air hammer, deviator, rigid-plastic medium, Mohr-Coulomb yield, limit loads
Abstract
The authors solve the problem on forces required to change drilling path of air hammers in soil. Soil mass is assumed a rigid-plastic medium with the Mohr-Coulomb yield, and the air hammer deviator is considered as a nondeformable body. The problem is solved in two stages: introduction of the deviator in soil and travel of the air hammer in soil with the rear deviated at a certain angle. The loads applied to the rear, the forces and the moment required to changing the path of an air hammer in soil are calculated.
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