우리나라 37개 땅밀림지의 지질 및 토양 특성 = Topography and Soil Characteristics Related to Land Creep in 37 Areas in South Korea

다국어 초록 (Multilingual Abstract)

This study was conducted to provide basic data for classifying patterns of land creep in 37 areas in South Korea using geological and soil property analyses. Geological time, as it relates to land creep areas in South Korea, had been most impactful for the Gyeongsang Supergroup and its sedimentary bedrock during the Cretaceous period.
In this area, perfect ridge cliffs in land creeping areas included 20 plots (approximately 54.0%), while tension cracking areas with ambiguous ridge cliff characteristics included 17 plots (approximately 46.0%). Hesitant slide slope types included 20 plots (approximately 54.0%) within theslide slope of an incident pattern (slide slope figure) in land creeping areas. Colluvial debris types among land creep patterns were the most frequent and included 25 plots (approximately 68.0%). The direct causes of land creep were cutting of foothills, quarrying, land-clearing in mountains, mining exploration, and the creation of burial grounds, all of which added to geological impacts. Among land creeping areas, 27 plots (approximately 73.0%) were the result of man-made activities, and 10 plots (approximately 27.0%) were derived via natural causes such as earthquakes, heavy rainfall, and caving.

국문 초록 (Abstract)

이 연구는 우리나라에서 발생된 전국 37개소의 땅밀림지의 지질 및 토양특성을 분석하여 땅밀림지에 대한 유형을구분하기 위한 기초자료를 제공하기 위하여 실시하였다. 땅밀림지의 지질 시대는 백악기가 가장 많았으며, 경상누층군에서가장 많이 발생하였다. 주된 구성암석은 퇴적암이 가장 많았다. 또한 땅밀림지 중 활락애가 명확하게 구분된 지역은 20개소(약 54.0%), 활락애가 모호하고 인장균열(균열)이 발생한 지역은 17개소(약 46.0%)이었다. 땅밀림지의 발생 형태(붕괴면의 형상)는 주저형 붕괴면이 20개소(약 54.0%)로 가장 많았다. 땅밀림 발생유형은 붕적토 땅밀림지가 25개소(약 68.0%)로가장 많았다. 땅밀림의 직접적인 원인은 지질적인 원인에 더해 산각절취, 토석 및 토사채취, 산지개간 및 절취, 광산개발, 묘지조성 등 인위적인 개발사업에 근거하는 것으로 나타났다. 전국 37개소의 땅밀림지 중 인위적인 원인에 의한 땅밀림지는 27개소(약 73.0%)이었으며, 지진, 집중호우, 하천포락 등 자연적인 원인은 10개소(약 27.0%)이었다.

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