• Title/Summary/Keyword: 터널건설

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A tunnel construction cost estimation model using system dynamics (시스템 다이내믹스를 이용한 터널공사비 예측 모델 개발)

  • Park, Yong-Woo;Park, Hee-Sung
    • Proceedings of the Korea Contents Association Conference
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    • 2010.05a
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    • pp.316-318
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    • 2010
  • 도로건설에 있어 계획단계에서 초기공사비의 정확한 예측을 위해 아직 연구가 미흡한 터널공사비 예측 모델을 시스템 다이내믹스를 이용하여 개발함으로써 합리적인 터널공사비 예측을 위한 토대를 마련하여 올바른 의사결정을 돕고 예산 낭비를 방지하기 위함을 목적으로 하였다.

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자연과 사람이 어우러지는 아파트 한화건설 '꿈에그린'

  • Kim, So-Jin
    • 주택과사람들
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    • s.194
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    • pp.50-51
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    • 2006
  • 88올림픽 고속도로, 미시령 터널 등 국가 균형발전 개발에 적극적으로 기여해온 한화건설이 아파트 부문에서도 단연 두각을 나타내고 있다. '꿈에 그린'이라는 아파트 브랜드로 기업 가치를 높이고 있는 한화건설의 경쟁력을 살펴본다.

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Safety Effect Evaluation of Existing Metro Tunnel by Deep Urban Tunnelling (대심도 도심지 터널시공에 의한 기존 지하철 터널 안전영향 평가)

  • Han, Sang-Min;Lee, Dong-Hyuk;Lee, Sung-Ho
    • Journal of the Korean Geotechnical Society
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    • v.37 no.9
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    • pp.37-50
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    • 2021
  • Recently, due to the expansion of urban infrastructure using underground spaces in urban areas, many adjacent constructions and excavations have been made carried out between existing facilities, and complaints related to the stability of existing facilities due to close construction have become significant issues. In this study, it was closely reviewed for the existing metro tunnel structure in the new Dongbuk urban metro railway to determine the behavioral characteristics of tunnel structure according to adjacent tunnel construction. Also, it was analysed the evaluation of the safety zone and excavation method for metro tunnel structure. And after a detailed damage assessment, track irregularities and structural calculation by using a numerical analysis, stability of the metro tunnel structure according to nearby tunnel excavation was evaluated to be secured for safety. This study is expected to be applied as practical reference to review the evaluation of safety effects of existing tunnel structure and buildings according to adjacent construction in complex deep urban tunnelling.

Time-lapse inversion of resistivity tomography monitoring data around a tunnel (터널 주변 전기비저항 토모그래피 모니터링 자료의 시간경과 역산)

  • Cho, In-Ky;Jeong, Jae-Hyeung;Bae, Gyu-Jin
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.11 no.4
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    • pp.361-371
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    • 2009
  • Resistivity tomography is very effective geophysical method to find out the resistivity distribution and its change in time around a tunnel. Thus, the resistivity tomogram can provide helpful information which is necessary for the effective maintenance of the tunnel. However, an air filled tunnel severely distorts tomography data, especially when the current or potential electrode is placed near the tunnel. Moreover, the distortion can often lead to misinterpretation of tomography monitoring data. To solve these problem, we developed a resistivity modeling and time-lapse inversion program which include a tunnel. In this study, using the developed program we assured that the inversion including a tunnel gives much more accurate image around a tunnel, compared with the conventional tomogram where the tunnel is not included. We also confirmed that the time-lapse inversion of resistivity monitoring data defines well resistivity changed areas around a tunnel in time.

Feasibility of Choryeong Tunnel and Han River Section in Kyungbu Canal (경부운하 한강구간 및 조령터널의 입지 타당성분석)

  • 정태웅
    • The Journal of Engineering Geology
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    • v.7 no.1
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    • pp.1-10
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    • 1997
  • The construction of Kyungbu canal connecting Han and Naktong rivers is needed to facilitate the carriage of goods and enhance the economic growth. The two rivers are liflked by the Choryeong tunnel with 20.5 km length and 125 m altitude. Seven locks involving of 25 m lifting height are planned to reach the tunnel from Shingok dam along the Han river. The tunnel and dams are located favorably by topographic and geologic map analysis. The water needed to fill the chamber of high lock will he supplied by construction of additional dams above Chungju-dam and/or intmduction of water-saving lock system.

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TBM 터널과 NATM 터널의 초 근접시공 사례

  • 이인기
    • Magazine of korean Tunnelling and Underground Space Association
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    • v.1 no.2
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    • pp.161-170
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    • 1999
  • 본고에서는 $1986.8\~1988.7$월중에 시공된 부산지하철 1호선 3단계 건설구간 중 서대신동 로타리에서 괴정국민학교 앞까지 연${\cdot}$경암지역에서의 TBM(Tunnel Boring Machine)으로 시행된 단선터널(7.0m)과 NATM으로 시행한 복선터널의 근접시공에 따른 간벽부 보강설계 내용과 근접부 시공시 계측결과 분석, 지보 Pattern조정 및 시공 실적 등을 제시하였다. 원설계 내용 분석 결과 지보 Pattern이 현장 지반조건에 비해 과다하였고 TBM 굴진시 Thrust 2500kN(본 기계 기준) 이상인 연암이상의 지반에서는 TBM 굴착으로의 효율성이 있었고, 경암구간에서 병행터널의 간섭영향을 배제하려면 터널간의 중심거리가 터널직경의 2배 이상이 되어야 하며, TBM 단선터널(7.0m)의 일 평균 굴진 길이는 4.6m로 분석되었다. 앞으로 이와 유사한 암층에서의 터널근접 시공 및 TBM 굴착시 본 분석내용이 참고가 되기를 기대하여 본고를 작성하였다.

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