전기비저항 탐사를 이용한 KTX 선로하부(150M) 공동지반 해석

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This study is to defined the applicability of a 2D electrical resistivity technique for the probing of underground cavities under KTX rail. At the test site, where the ground has subsided in the past, underground cavities are commonly found in the limestone bedrock, which is overlain with the alluvial deposits. The limestone cavities at the site are mostly filled with groundwater and clay; hence, they show levels of electrical resistivity that are significantly lower than those of the surrounding host bedrock.
The dipole-dipole 2D resistivity survey were conducted along the KTX rail to define the developed cavities zones with 9 survey line. Then the analysis was applied to confirm the suspected cavities zones at 150m depth.
The results of this study demonstrate that the zones of low resistivity correspond to the zones of the cavities, and recommended boreholes at the site. And 2D electrical resistivity survey is a very effective tool for detecting and mapping underground cavities in the karst area.
Alternative Title
Interpretation of Cavities under KTX Rail using the Electrical Resistivity Survey
Alternative Author(s)
Dae-mo Kim
조선대학교 일반대학원
일반대학원 에너지자원공학
Awarded Date
Table Of Contents
목차 ⅰ
List of tables ⅱ
List of figures ⅲ

Abstract ⅳ

1. 서론 1
2. 연구배경 2
2.1 지형 및 지질 3
3. 연구방법 4
3.1 조사방법 4
3.2 전극배열 및 측정방법 5
3.3 매질에 따른 일반적인 전기 비저항 범위 6
4. 수치해석 8
4.1 유한요소법 mesh의 작성 9
4.2 초기 모델의 작성 9
4.3 이론전위계산 9
4.4 모델의 수정 10
5. 연구결과 11
5.1 전기비저항탐사 결과 11
5.2 역산 전처리 12
5.3 2차원 탐사 결과 17
5.4 지질이상대 분포구간 및 연장거리 20
5.5 전기비저항탐사 3D-Fence 결과도 23
6. 결론 27
참고문헌 28
조선대학교 일반대학원
김대모. (2016). 전기비저항 탐사를 이용한 KTX 선로하부(150M) 공동지반 해석.
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General Graduate School > 3. Theses(Master)
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