• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2002년도 봄 학술발표회 논문집
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• pp.253-260
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• 2002

Chemical weathering processes related with mineralogical characters and ground water condition are very essential engineering problems in soluble rock masses. Detailed geological mapping were performed and 8 samples were collected from the 2 formations including various rock faces to deduce the possibility of the limestone cavity formation and their mechanism. Petrological descriptions and various petro-mineralogical experiments such as XRD analysis, clay mineral analysis, absorptivity test, impurity analysis were conducted to evaluate the cavity making processes. Laboratory solubility test for rock specimen were also carried out under the strong acid (pH=1) condition. From the experimental data and geological mapping data, it is found that the formation of limestone cavities in limestones are strongly related with geological structures such as beddings, cleavages and the contents of impurities rather than CaCO$_3$contents. In case of dolomites, rock textures, grain size, amounts and types of clay minerals as well as geological structures are major controlling factors of cavity forming processes

• 자원환경지질
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• 제24권2호
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• pp.167-176
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• 1991

The Yeongweol - Yemi area, in the area between the Kagdong thrust fault and Samcheog Coalfield, comprises Paleozoic and Mesozoic sedimentary and igneous rocks. Geologic structures related with thrust movements are dominant in the area. These are thrust faults, imbricate structures and hanging-wall anticline. Thrust sheets were transported from NW to SE and these differ from the Cretaceous Bulkuksa Orogeny of which thrust sheets were transported from N to S. NE - trending folds are dominant, but NW - trending folds and refolded folds are also found. NW - trending folds are only found in the Cambro-Ordovician sedimentary rocks. It might be an indication of the presence of late Paleozoic tectonism in the Korean Peninsula.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2005년도 춘계 학술발표회 논문집
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• pp.878-883
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• 2005

This paper describes the effect of acid rock drainage(ARD) produced from the cut slope on the slope structures. Acid rock drainage is originated from a rock quarry located in coal mine zone and mineralization belt of Chosen Supergroup and Ogcheon group, andesite with the pyrite, and acid sulfate soils of Tertiary in Korea. The cut slope, where acid rock drainage comes out, almost has been constructed by shotcrete and planting works. According to the field observation results, in most cases, the acid rock drainage has an adverse effect on slope structures. The shotcrete, anchors and rock bolts produced corrosive action, and bad germination and growth diseases of covering plants of the slope planting construction due to ARD.

• 자원환경지질
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• 제3권1호
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• pp.9-15
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• 1970

This paper describes the definition of the Ogcheon Group and its characters, and indicates that it is neither the Precambrian nor metamorphosed Cambro-Ordovician sediments, and its geological age might fall in Post-Ordovician on the bases of lithostratigraphy, correlation and geological structures.

• 한국지반공학회:학술대회논문집
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• 한국지반공학회 2005년도 지반공학 공동 학술발표회
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• pp.479-488
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• 2005

Geopier soil reinforcement system which crushed aggregate is put into a hole and rammed the aggregate with tamper is a viable alternative to deep foundation to over-excavation and replacement. Also, Geopier is intermediate foundation of deep and shallow foundation. In this paper, the value of Geopier element stiffness modulus($K_g$) when designed is compared with the measured value($K_g$) by the in-situ modulus Load test in the field. Also, this paper presents a technology overview of system capabilities and application for foundation reinforcement of structures.

• 자원환경지질
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• 제24권1호
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• pp.27-41
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• 1991

Taebaeg-Hajang area, in the northern part of Taebaeg city, comprises of Paleozoic sedimentary sequences and Cretaceous intrusive and volcanoclastic rocks. The rocks in the area are affected by folding and thrusting during the Bulgugsa Orogeny. In Taebaeg area, geologic structures related with thrust movement are dominant. These structures are small scale of klippe and window, back thrust, and asymmetric folds related with blind thrust. Tear fault or compartment fault due to differential movement of thrust sheets have "en echelon" arrays. Small scale transpression effects occurred along these faults and produced the flower structure. According to strain measurement using by ooids from limestone and quartz grains from quartzite, strain ratios are very low and strain ellipsoids are apparent oblate type.

• 지질공학
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• 제27권4호
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• pp.417-427
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• 2017

본 연구에서는 암반비탈면을 대상으로 붕괴에 큰 영향을 미치는 주요 지질구조에 의한 붕괴현황, 원인분석 및 대책에 관한 사례를 소개하고자 한다. 다양한 지질구조에 의한 암반비탈면 붕괴 사례 중 단층점토가 협재된 단층면의 교차에 의한 붕괴, 엽리 및 암맥관입접촉부 파쇄대에 의한 붕괴 및 심부 암종경계면(점토대)에 의한 붕괴 등에 대한 사례를 중심으로 정밀지표지질조사, 물리탐사 및 시추조사 등을 통한 붕괴원인 분석을 실시하였으며, 대상 비탈면의 지질구조적 특성, 붕괴유형 및 지반조건 등을 고려하여 추가적인 비탈면 활동을 방지하고 비탈면의 항구적인 안정성 확보를 위한 대책방안을 수립하고자 하였다.

• 지질공학
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• 제10권1호
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• pp.79-93
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• 2000

일반적으로 공동 주변에 분포하고 있는 지질구조는 지하 암반 공동 굴착시 지수, 보강, 지하수 유동 등에 상당한 영향을 주게 되므로 지질구조의 분포 및 특성을 아는 것이 매우 중요하다. 본 연구에서는 거제 지역에 기 시행된 지하 비축시설의 조사, 설계 및 시공자료를 토대로 지질구조와 공동 누수량 상호 관계를 분석한 결과, 본역에 발달하고 있는 주 함수구조대의 방향은 N50∼60W, 경사는 거의 수직이며 인장 단열로서 추정된다. 이 구조대는 양수 시험시 타원형의 장축 방향과 일치하고 N10∼30E 방향의 단열들과 교차하고 있으며, 화강섬록암에서 나타나는 전형적인 장방형 단열계를 나타낸다.

• 한국신재생에너지학회:학술대회논문집
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• 한국신재생에너지학회 2009년도 춘계학술대회 논문집
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• pp.565-568
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• 2009

Most of the historic hot springs are artesian wells in Korea. However, many boreholes have been drilled due to the shortage of hot water, and hot water is now being pumped by submersible pump installed at most of hot spring areas. The distribution of boreholes are expected to be related to the geological structure, and the study was carried out to interpret the relationship between two factors. The distributional maps of boreholes were made and the geological structures were interpreted at eight hot spring areas. Some distributions of boreholes have no special direction, and these are not related to the geological structure at Dogo, Suanbo, and Deoksan. The others are consistent with the direction of the geological structure at Goseong, Onyang, Sokcho, Yuseong, and Bugok.

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 1998년도 추계종합학술대회 논문집
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• pp.947-950
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• 1998

Geological structures such as fault and fracture patterns provide important information about preliminary exploration of mineralized areas and geological characterization. We apply a filtering method taking the sun's azimuth angle into account to a shaded relief image derived from a digital elevation model (DEM), by which even linear edges extending parallel to the sun direction can be effectively extracted. Then, Generalized Hough tranform is applied to extract lineanments which correspond to fault and fracture patterns.