• 전기의세계
• /
• v.26 no.3
• /
• pp.5-12
• /
• 1977

본 논문에서는 어떻게 레이저의 절삭이 편암의 회전기굴삭에 병용될 수 있는가를 고찰하였다. 특히 레이저 절삭을 병용한 턴넬보오링머시인(tunnel boring machine)과 회전식발파공의 드릴링에 대하여 알아보았다.

• Journal of the korean veterinary medical association
• /
• v.49 no.9
• /
• pp.553-555
• /
• 2013

• 대한치주과학회:학술대회논문집
• /
• 2007.05a
• /
• pp.33-33
• /
• 2007

• The Journal of the Korean dental association
• /
• v.38 no.5 s.372
• /
• pp.404-407
• /
• 2000

• Proceedings of the Korea Water Resources Association Conference
• /
• 1996.05a
• /
• pp.131-136
• /
• 1996

• 대한두경부종양학회:학술대회논문집
• /
• 2008.11a
• /
• pp.264-264
• /
• 2008

• Proceedings of the Zoological Society Korea Conference
• /
• 1995.10b
• /
• pp.156.1-156
• /
• 1995

• Magazine of the Korean Society of Agricultural Engineers
• /
• v.40 no.1
• /
• pp.5-7
• /
• 1998

• Proceedings of the Korea Water Resources Association Conference
• /
• 1987.07a
• /
• pp.263-272
• /
• 1987

• Journal of Korea Water Resources Association
• /
• v.33 no.4
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• pp.385-392
• /
• 2000

An experimental investigation was conducted to determine the effect of a nonuniform pier on the stability of riprap placed around bridge piers. A nonuniform pier is one of which the cross-sectional dimension varies over the length of the pier and comprises a cylinder of diameter bp placed on a larger diameter of foundation bf. and the stability of riprap are significantly influenced by the height of foundation z. The critical height of foundation is defined as the height of foundation which has the same critical velocity to that of uniform pier without foundation, and it was found to be zc=0.8bf. For z