수문 및 지형특성과 인구분포를 고려한 지반침하 발생 평가인자 분석

초록

To assess land subsidence estimation and preparedness in the Geum River basin, this study applied GIS techniques andidentified six key areas. The Geum River basin has experienced an increase in heavy rainfall since late 2010, and four studyareas have shown an increase in groundwater levels. Land subsidence primarily occurred from June to September, withhigher rainfall years in 2020 and 2023. Approximately 83.6% of land subsidence in Chungcheongbuk-do province occurredin Cheongju-si, mainly attributed to aging sewage pipes. The regions experiencing population growth have likely led to theconstruction of underground infrastructures and sewer pipes. Thus, it is considered that various factors, including sewagepipe leaks, precipitation, slope gradient, low drainage density, and groundwater level fluctuations, have contributed to landsubsidence. Improving land subsidence estimation involves incorporating additional natural factors and human activities.

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