한반도 지진 발생 취약 지역에 따른 한국고속철도 노선 위험 관리 구간결정에 대한 연구
A Study on the Decision of KTX Network Link for Risk Management by Earthquake Vulnerability
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초록
본 연구에서는 공간통계기법을 이용하여 지진발생의 공간적 발생 및 파급효과를 분석하여 KTX 노선에서 지진발생 위험에 노출되어 있는 구간을 지진의 강도를 고려하여 제시하였다. 지진 발생의군집성을 파악하기 위해 G, F, K 함수 등과 같은 다양한 함수를 활용하였으며, 남한의 지진 발생패턴은 군집을 보이고 있는 것으로 판단되었다. 분석 결과 KTX 경부선의 울산-부산구간 52km구간이 지진 위험도가 높아 철도시설물 보강이 필요하며 호남선의 경우 상대적으로 위험도가 낮은 것으로 분석되었다. 따라서 본 연구결과는 강력한 지진발생시 발생할 수 있는 철도시설물의 사고 위험을사전적으로 예방하기 위한 지진대비 시설물 보강하는데 있어 지역적(구간) 우선순위를 결정하는데유용한 자료로 활용될 수 있을 것으로 기대되며 향후 전체 철도망 및 교통망에 대한 추가분석이필요하다.
Abstract
This study presents the area exposed to the risk of earthquakes on KTX routes by examining the magnitude of earthquakes based on spatial statistics analysis. In order to find the clustering pattern, various functions were used such as G, F, K function. As a results, a specific clustering pattern for earthquakes in Korea emerged. As we find that an area in Gyeongbu line of KTX between Ulsan and Busan (52km) is exposed to high risks of earthquakes, improvement of the safety of railroad facilities is required. On the other hand, our research findings indicate that Honam line is exposed to relatively low risks. These results could be informative to determining high-priority areas for structural reinforcement of the facilities to prevent earthquake- related railroad accidents, thus suggesting a need for further analysis on the entire railroad and transportation network.
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