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국내외 사례비교를 통한 그라운드 앵커의 유지관리기준 제안 - 점검 및 모니터링을 중심으로 -
장범수 ( Chang Buhm-soo ),유동우 ( You Dong-woo ),김태훈 ( Kim Tae-hoon ),차경섭 ( Cha Kyung-seob ),김선주 ( Kim Seon-ju ),이종우 ( Lee Jong-woo ) 한국구조물진단유지관리공학회 2008 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.12 No.1
The manuscript was prepared for some sugessions for the purpose of improving the method on ground anchor maintenance. We gathered some domastic and foreign cases of to compare the cases and to find the differences for the improvemnents on ground anchor maintenance. As a result of these effort, we suggest some suggstons on the ground anchor maintenance by inspection and mornitoring.
절리 암반터널 내 그라우팅 전·후의 암반 투수계수 및 그라우팅 주입량과 Q 시스템 항목들과의 상관관계 연구
유광호,지홍근,서경원,김수정,유동우,You, Kwang-Ho,Jie, Hong-Keun,Seo, Kyoung-Won,Kim, Su-Jeong,You, Dong-Woo 한국터널지하공간학회 2012 한국터널지하공간학회논문집 Vol.14 No.6
본 연구에서는 그라우팅이 실시된 4~5 등급(Q 분류의 1 이하)에 해당 되는 암반 터널을 대상으로, 그라우팅 전 후의 암반 투수계수 및 그라우팅 주입량과 Q분류법의 파라미터들간의 상관관계를 분석해 보았다. 연구 대상 터널의 경우 Q 값이 작을수록 그라우팅 전 암반 투수계수는 커지며, 그라우트의 주입량은 작아지는 것으로 나타났다. 또한 투수계수 및 주입량에 가장 큰 영향을 미치는 요인은 RQD 및 절리군수(Jn)인 것으로 나타났다. 또한 보통시멘트를 주입재로 한 암반터널 그라우팅 작업에서 투수계수를 $1.0{\times}10^{-8}$ m/sec이하로 낮추는 것은 매우 어려운 것으로 나타났다. In this study, correlations between the rock mass permeability before and after grouting & injection volume and the parameters of Q system were investigated on a grouted rock mass tunnel corresponding to rock class 4 and 5 in terms of Q classification system. As a result, it appears that the lower the Q value is, the higher the before-grouting permeability becomes and the smaller the injection volume of grouting becomes. Also RQD and Jn are the most influencing factors to the permeability of rock mass and the injection volume of grouting. In addition, it turned out that it was very difficult to lower the permeability of rock mass smaller than $1.0{\times}10^{-8}$ m/sec with the ordinary portland cement grout.
장범수 ( Chang Buhm-soog ),유동우 ( You Dong-woo ),이종우 ( Lee Jong-woo ),손해성 ( Son Hae-sung ),김태훈 ( Kim Tae-hoon ) 한국구조물진단유지관리공학회 2007 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.11 No.1
The manuscript was prepared for some sugessions for the purpose of improving the method on ground anchor design, construction and management. We gathered not only many success cases but also failure cases to compare the cases and to find the differences for the improvemnents on ground anchor design, construction and management. As a result of these effort, we suggest some sugessions.
장범수(Chang Buhm-Soo),유동우(You Dong-Woo),이종우(Lee Jong-Woo),손해성(Son Hae-Sung),김태훈(Kim Tae-Hoon) 한국구조물진단유지관리학회 2007 한국구조물진단학회 학술발표회논문집 Vol.11 No.1
The manuscript was prepared for some sugessions for the purpose of improving the method on ground anchor design, construction and management. We gathered not only many success cases but also failure cases to compare the cases and to find the differences for the improvemnents on ground anchor design, construction and management. As a result of these effort, we suggest some sugessions.