• 한국재난정보학회 논문집
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• 제8권4호
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• pp.319-327
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• 2012

본 연구는 대표적인 TMB 장비 회사인 독일 WRITH사에서 개발한 TMB 공법 적용 현장의 굴진보고서를 수집하여 작업운영 생산성을 분석하였다. 그리고 분석된 자료를 근거로 구경별(2.6m, 3.0m, 3.5m, 5.0m, 8.0m) 월굴진속도(m/월)를 도출하였다. 또한, 도출된 구경별 월 굴진속도를 근거로 독일의 WRITH사에서 구경별로 제시한 1m당 굴진에 소요되는 공사비 와 총공사기간을 산출하였다. 경암 40.0%, 연암 30.0%, 보통암 20%, 풍화암 10.0%로 구성된 암질을 기준으로 구경별로 도출된 월굴진속도, m당 공사비, 총공사기간은 향후 TBM 공법 적용시 기본계획단계와 기본설계단계에서 구경별 공사기간 및 공사비를 추정하는데 효과적인 활용 자료가 될 것으로 사료된다.

• 대한토목학회논문집
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• 제32권5D호
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• pp.499-505
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• 2012

도심지의 굴착공사 시 굴착심도가 깊어지고 있어 굴착공정에 따른 문제점들을 개선할 수 있는 방안에 대한 연구가 시급한 실정이다. 본 논문은 도심지 굴착공사 시 공사기간을 단축시키면서, 주변 구조물에 미치는 영향을 최소화 할 수 있는 굴착공법에 대한 연구이다. 본 연구의 방법으로 국내 및 국외에서 다수 시공된 벽식 지하연속벽의 공법인 Slurry Wall 공법의 문헌자료를 통해 지하연속벽 시공의 이론적 고찰을 실시하고, 기존 지하연속벽 공법의 트렌치 굴착 시 발생되는 비효율적인 시공단계의 주요한 문제점들을 분석하여 기술요소를 도출하였다. 도출된 기술요소를 반영하여 개선 가능한 새로운 공법을 제시하였고, 제시된 굴착공법을 현장에 적용한 사례를 바탕으로 기존 굴착공법과의 공사기간을 비교 분석하였다. 본 논문에서 제안된 공법을 현장에 적용한 결과, 기존예정공정표에 표시된 48일에서 15일 단축된 33일에 굴착공정을 마칠 수 있었다. 또한, 제안된 공법은 기존 지하연속벽 공법들에 비해 공기단축의 효과는 물론 경제성, 환경성 및 안정성 또한 뛰어난 것으로 기대되며, 향후 지하연속벽 시공의 공기단축에 기여하리라 사료된다.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 1990년도 PROCEEDINGS OF THE FIRST KOREA-JAPAN JOINT GEOTECHNICAL SEMINAR ON EXCAVATION and TUNNELING IN URBAN AREAS
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• pp.97-110
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• 1990

This paper presents a case history of a deep open cut excavation of Nakagawa section for Futuoka Subway construction which adopted observational mettled against boiling failure and completed with success by modifying construction based upon field monitoring. One of the difficult conditions for the excavation was sandy layer with high water pressure which was anticipated boiling failure. The boiling was generally considered as one of the difficult phenomena to work with the observational method because of its unpredictable catastrophic nature. Laboratory experiments showed the existence of the prefailure movements of the ground and the possibility of the application of the observational method against the boiling failure. Construction step was planned to be modified, if necessary, based upon field monitoring and was completed with success.

• 한국농공학회논문집
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• 제46권2호
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• pp.93-103
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• 2004

In trench excavation, essential factor of earth-retaining temporary work structure should be easy taking to pieces and movement, and dead weight must be less. This paper studies about the light weight material and application as earth-retaining structure to prevent the slope failure of sand soil ground caused by the variation of groundwater level in trench excavation. That is, light weight earth-retaining structural is proposed and a simulation with FEM on application of proposed structural in sandy soil is presented. The results are summarized as follows; (1) The study proposed FRP H-shaped pannel for the light weight member, and also presented estimation method about stability. (2) Mechanical property (bending moment, shear force, axial force, displacement) were changed according to groundwater level, but these values had been within enough safety rate and allowable stress. Therefore, proposed light weight pannel with FRP is available for bracing structure in trench excavation.

• 한국산업융합학회 논문집
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• 제8권3호
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• pp.161-168
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• 2005

This study is analysis for adjacent structures and ground movement by deep excavation work. Underground Inclinometer has shown that deformation of increment is minor within to allowable limit. According to the measurements result of slope and crack for adjacent structures, a detached house showed bigger than hospital structure to deformation of increment. Variation of underground water level didn't effect so much to ground and adjacent structures movement because underground water flows in rock and didn't give the water press to propped walls. Measurement data of strut variation is within tolerance limit. Because excavation site's wall was strengthened suitably. This study will contribute in establishment of measurement standard and information-oriented construction during deep excavation in multi-layered ground including rock masses.

• 국제학술발표논문집
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• The 6th International Conference on Construction Engineering and Project Management
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• pp.669-670
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• 2015

Efficient management of the construction heavy equipment is required to reduce the rate of carbon emissions and on-site accidents. The intelligent excavation system (IES) will improve the construction quality and productivity through information technologies and efficient equipment operation, especially in large earthwork projects. Three-dimensional digitized ground data should be required for identifying the path of heavy equipment and work-site environment. Rapid development of terrain laser scanners (TLS) is more readily to acquire the digital data. This study suggests the '3D ground terrain processing platform (3DGTPP)' including data manipulating module and analyzing module of the scanned data for intelligent earthmoving equipment operation. The processing platform consists of six modules, including scanning, registering, manipulating, analyzing, transmitting, and storing. 3D ground terrain processing platform presented in this study will provide fundamental information for intelligent excavation system (IES), which will increase the efficiency of earthworks and safety of workers in significant.

• 한국해양공학회지
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• 제12권1호
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• pp.3-9
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• 1998

According to the developement of cities, electric wires and commuinication lines which are currently above the ground effect on the bad. Nowadays, it is necessary to build up underground facilities because the construction is increasing. Excavation work has been dominant even though the inconvenient things occurred, for example a civil appeal, a traffic obstacle, safety and spoiling the fine view because of the cost or period of the construction work. But the congestion of cities are more and more serious. Therefore shield-method is the way to escape from congestion. I considered all the construction fields which are in progress or finished.

• 터널과지하공간
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• 제2권1호
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• pp.102-115
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• 1992

Blasting operations associated with rock excavation work may have an environmental impact in nearby structures or human beings. With the increase of construction work in urban areas, vibration problems and complaints have also increased. In order to determine the optimum design parameters for safe blast, it is essential to understand blast mechanism, design variables involved in blast-induced damage, and their effects on the blasting results. This paper deals with the characteristics of ground vibrations, air blast and fly rock caused by blast, including the general method of establishing the vibration predictors, and damage criteria suggested by various investigators. The results of field measurements from open pit mine and tunnel construction work are discussed. Basic concepts of how to design blast parameters to control the generation of ground vibrations, air blast and fly rock are presented.

• 한국건축시공학회:학술대회논문집
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• 한국건축시공학회 2012년도 춘계 학술논문 발표대회
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• pp.19-20
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• 2012

According to develop urban area, the depth and floor area of basement tend to become deeper and larger. Excavation work for basement floor work is very important because its cost take 20% of total construction cost. Therefore, many studies of developing retaining wall system have performed for feasibility and safety in deep excavation work. In this study, new supporting system used high-strength pipe for retaining wall is introduced to reduce the construction cost and improve the safety and constructability by analyzing case study.

• 지질공학
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• 제29권2호
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• pp.137-151
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• 2019

굴착공사 중 발생할 수 있는 지반함몰 사고를 방지하기 위해 굴착공사 주변 지층변화를 분석하고 모니터링하는 탐사기법과 기술이 필요함에 따라 다양한 탐사기술들을 적용, 보완함으로써 해석 기법을 향상시키는 것이 요구된다. 이 연구에서는 굴착공사 중 발생할 수 있는 지반침하 위험요소와 굴착, 지하수 등에 의한 이완영역을 탐지하기 위한 실규모 현장 실험을 실시하였다. 현장 실험을 수행하기 위해 실규모 굴착현장 테스트베드를 구축하고, 도심지 현장을 고려한 탐사법 중 전기비저항 탐사, 다중채널분석표면파탐사를 활용, 각 개별탐사의 적용 유효성 검토 및 모델링을 이용한 최적 탐사변수 도출과 설계, 탐사결과의 상호연관성을 비교 해석하였다. 이 연구 결과, 각 탐사별로 이완영역에 대한 영향을 확인할 수 있었으며, 특히 전기비저항탐사를 이용해 지하수면 위치를 확인하고 굴착에 대한 영향 파악할 수 있었다. 추후 지하수의 영향을 고려한, 즉 굴착면을 고려한 모델링에 대해 추가 연구가 필요할 것으로 보인다.