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A Study on Notch Bit System for Controlling Blast Vibration and Over-break in Rock Mass  

Jeong, Dong-Ho ((주)유신코퍼레이션)
Moon, Sang-Jo ((주)유신코퍼레이션)
An, Dae-Jin ((주)유신코퍼레이션)
Jeong, Won-Joon ((주)유신코퍼레이션)
Kim, Eun-Kwan ((주)선산토건)
Kim, Dong-Gyou ((주)한국건설기술연구원)
Publication Information
Tunnel and Underground Space / v.17, no.3, 2007 , pp. 216-224 More about this Journal
Abstract
Blasting, using shock and dynamic energy of explosive, is very effective tunnel excavation method. But it had serious problem which is the blast vibration and over-break. In recent study, pre-cracked excavation method using notch hole reduced blast vibration and over-break in tunnel, so we performed study about developing notch bit system for making notch hole. In order to make notch hole effectively we had perform drilling experiments changing length and height of notch and in order to improve speed and precision of drilling we had developed notch bit system which consists of drilling bit, notch bit, adapter and notch guide.
Keywords
blast vibration; over-break; notch; notch bit system;
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1 최용근, 1996, 장약공 놋치와 장약홀더를 이용한 발파균열의 제어에 관한 실험연구, 서울대학교
2 터널 암굴착 굴착선공부 선균열 발파공법, 특허 제 0362014호, 공법설명서, 특허청
3 터널 암굴착 굴착선공부 여굴 최소화 발파방법, 특허 제 10-0554944호, 공법설명서, 특허청
4 Fourney, W.L., Dally, J.W. And Holloway, D.C., 1978, Controlled Blasting with Ligamented Charge Holders, Int. J. Rock Meth. Min. Sci. & Geometh. Abstr. Vol. 15, PP 121-129   DOI   ScienceOn
5 도로연구소, 2000, 여굴최소화를 위한 최적발파패턴 설계방안에 관한 연구, 한국 도로공사
6 백승규, 김재동, 류창하, 1999, 노치성형 발파공을 이용한 균열제어 발파방법의 균열발생 특성에 대한 수치해석적 고찰, 터널과 지하공간, Vol, 9. PP 64-71
7 노치 발파공 형성장치, 실용신안 제 0334854호, 의장등록 제 0363315호, 공법설명서, 특허청
8 Dally, J.W. And Fourney, W.L., 1997, Fracture Control in Construction Blasting, Proc. 18th U.S. Symp. on Rock Mechanics, PP 2A6-1-2A6-7
9 Rooke, D.P And Cartwright, D.J, 1976, Compendium of Stress Intensity Factors, PP 160-161
10 Per-Anders Persson, Roger Holemberg And Jaimin Lee, 1994, Rock Blasting And Explosives engineering, PP 265 -285