한국지반공학회:학술대회논문집 (Proceedings of the Korean Geotechical Society Conference)
- 한국지반공학회 2008년도 추계 학술발표회
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- Pages.992-1006
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- 2008
터널의 굴착을 위한 수직사면의 안정대책 방안 수립 및 시행
Slope stability method establish and carry out in vertical slope for tunnel excavation
- 박철숙 (한국수자원공사 수자원 연구원) ;
- 김준용 (한국수자원공사 댐유역 관리처) ;
- 곽한 (한국수자원공사 울산권 관리단) ;
- 김민조 (삼성물산(주) 대암댐 현장) ;
- 최우경 ((주)지오브르그 코리아)
- Park, Chal-Sook (KOWACO, Korea Institute of Water and Environment) ;
- Kim, Jun-Yong (KOWACO, Dam & Watershed Dept.) ;
- Kwan, Han (KOWACO, Ulsan Regional Office) ;
- Kim, Min-Jo (Samsung C & T Corporation, Dae-Am Dam Office) ;
- Choi, Yu-Kyung (Geobrugg Korea Co. Ltd)
- 발행 : 2008.10.10
초록
The tunnel type spillways is under construction to increasing water reservoir capacity in Dae-am dam. Cutting-slope adjacent to outlet of spillways had been originally designed to be 63 degrees and about 65m in height. Examination is carried out in preceding construction that it is caused to some problems possibility which of machine for slope cutting couldn't approach to the site, blasting for cutting slope might have negative influence on highway and roads nearby, and fine view along the Tae-hwa river would be eliminated. In order to establish stability of tunnel and more friendly natural environment that we are carry out detailed geological surface survey and analysis of slope stability. So, we are design and construct for tunnel excavation with possible method that it is keep up natural slope. The result of survey and analysis that natural slope was divided 3 zone(A, B, C zone). In A and B zone, in first removed floating rock, high tensile tension net is install that it prevent of release and falling of rock, in order to security during under working. In addition to, pre-stressed rock anchor is install purpose of security during tunnel excavation because of fault zone near vertical developed above excavation level. Zone C is relatively good condition of ground, design is only carry out random rock bolt. All zone are designed and constructed drainage hole for groundwater and surface water is easily drain. Desinged slpoe is harmony with near natural environment. Successfully, construction is completed.
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