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Title:
ROCK CUTTING APPARATUS USING WATER JET AND ROCK CUTTING METHOD USING THE SAME
Document Type and Number:
WIPO Patent Application WO/2012/036524
Kind Code:
A2
Abstract:
A rock cutting apparatus includes a shaft having a hollow therein where high-pressure water is movable, the shaft being configured to be inserted into a hole, a moving unit for forcing the shaft to reciprocate, and a nozzle unit installed at a front end of the shaft to inject the high-pressure water moving through the shaft. The nozzle unit injects the high-pressure water to cut a rock around the hole so that the hole communicates with a neighboring hole. Therefore, a cut surface or line is formed before blasting, which reduces blasting vibration transferred to the outside and minimizes overbreak.

Inventors:
KIM JEONG-GYU (KR)
SONG JAE-JOON (KR)
YOO YOUNG-IL (KR)
Application Number:
PCT/KR2011/006886
Publication Date:
March 22, 2012
Filing Date:
September 16, 2011
Export Citation:
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Assignee:
KIM JEONG-GYU (KR)
GUNWOO TECH CO LTD (KR)
SONG JAE-JOON (KR)
YOO YOUNG-IL (KR)
International Classes:
E21C37/06; B28D1/22
Foreign References:
KR20100069458A2010-06-24
KR100827428B12008-05-06
KR950019034A
KR20040086657A2004-10-12
Attorney, Agent or Firm:
PHIL & ONZI INT'L PATENT & LAW FIRM (1536-7,Seocho-dong, Seocho-gu, Seoul 137-872, KR)
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Claims: