• Proceedings of the Korean Geotechical Society Conference
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• 2008.10a
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• pp.297-301
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• 2008

매년 집중호우로 인하여 사면붕괴 및 산사태가 발생하고 있다. 사면 붕괴의 원인은 단순히 한가지의 요소에 의하여 붕괴되지 않고 다양한 요인이 중첩되어 발생된다. 이런 요인들을 사전에 파악하여 붕괴원인을 규명하고 적절한 사면 보강 방안 및 설계를 실시하여야 할 것으로 생각된다. 본 고는 사면붕괴후 설계 보강방안에 대한 자료를 수집하고 분석을 실시하였다. 사면붕괴의 요인으로 생각하는 대표적인 사례를 열거하였다. 사면붕괴로 인해 발생하는 피해를 저감하고 재차 사면 붕괴를 방지하기 위하여 도움이 되었으면 한다.

• Proceedings of the Korean Geotechical Society Conference
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• 2000.11b
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• pp.199-209
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• 2000

산악지를 절취하여 형성된 국내의 고속도로 상에 분포하는 절토사면은 그 분포갯수가 많아 분포현황 조차 파악이 어려운 상태이며 체계적인 관리가 되지 않은 상태였다. 본 논문은 지난 1년동안 현장조사된 자료를 토대로 국내 고속도로상에 분포하는 절토사면의 현황을 파악하고 노선별로 절토사면에 대한 현장조사자료를 분석하여 각암종별 사면의 붕괴유형 및 붕괴원인에 대해 분석하였다.

• Proceedings of the Korean Society of Disaster Information Conference
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• 2022.10a
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• pp.305-306
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• 2022

본 연구에서는 강우에 의한 현장 사면 붕괴현장을 조사하여 원인 분석 후에 안정적인 비탈면 경사를 결정한 사례연구로서 사면붕괴현장을 조사하여 사면 경사를 당초 약40°에서 29°로 완만하게 함으로서 사면의 안정을 확보하는 결론을 도출하였다.

• Journal of the Korean GEO-environmental Society
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• v.5 no.4
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• pp.47-56
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• 2004

This research analyzed about various landslide causes and resettled items, which are fit to environment of army facilities, of safe estimating table of Korea Institute of Construction technology through the spot inspection data. Analyzed relation with rainfall and slope failure occurrence for forecast slope failure appearance. Analyzed special quality of rainfall, topography, geological features that become occurrence factor of slope failure that happen in Kang-Won area come up with use of slope failure safety estimating table. Wish to examine closely phenomenon of slope failure and regional special quality that appear in military bases area and consider countermeasure.

• Journal of the Korean GEO-environmental Society
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• v.19 no.9
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• pp.29-36
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• 2018

Several studies have been conducted on monitoring system and automatic measuring instruments to prevent slope failure in advance in Korea and overseas. However, these studies have quite complex structure. Since most of the measurement systems are installed on the slope surface, the researches are carried on the measurement system that detects sign of slope collapse in advance and alerts are still unsatisfactory. In this study, slope collapse experiments were carried out to understand the slope failure mechanism according to rainfall conditions. The water content and displacement behavior at the early stage of the slope failure were analyzed through the measurement of the ground displacement and water content. The results of this study can be used by local government as a basic data for the design of slope failure alarm system to evacuate residents in case of slope failure or landslide due to heavy rainfall.

• Proceedings of the Korean Geotechical Society Conference
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• 2009.09a
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• pp.728-735
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• 2009

2009년 7월 초순 집중호우로 인하여 남부지방에 많은 산사태가 발생하였다. 사면 붕괴의 직접적인 원인은 집중강우에 의한 것이나, 붕괴 원인 파악과 붕괴 현황에 대하여 조사하고 자료를 분석하였다. 본 연구는 소방방재청의 요청에 따라 현지조사를 실시하고 수집된 자료에 기인한 것이다.

• Korean Journal of Construction Engineering and Management
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• v.11 no.6
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• pp.122-130
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• 2010

Seventy percent of Korea's national territory is covered with mountains, and the land is frequently exposed to typhoons and localized torrential downpours, particularly in July through September. For this reason, slope failure is one of the most frequent types of natural disasters in Korea. To prevent the damage caused by slope failure, the Korean government, academia and industry have strived together to develop and install a wired system for monitoring slope failures. However, conventional wired monitoring systems have been reported to have limitations, such as possible system errors caused by lightning, and the difficulties of restoration and management of the systems. To solve these problems, this research suggests a USN-based monitoring system for slope failures. First, the trend of slope measurement and USN technology was analyzed, and then the current status of damage caused by slope failures in Korea was reviewed. Next, a USN-based monitoring scenario for slope failures, incorporating both USN and slope monitoring technique, was developed. Finally, sensors were decided based on the developed scenario. It is expected that the results of this study will be utilized as fundamental data for the development of monitoring prototype systems for slope failures in the future. The development of the USN-based monitoring system for slope failures and its application in the field will also ultimately contribute to the prevention of slope failures and the minimization of related damage.

• The Journal of Engineering Geology
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• v.4 no.3
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• pp.343-356
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• 1994

When most of the industry and social indirect facilities such as the large structure, power plant or road, rail-road are constructed, the new slope may lead to the slope failure. The failure models for slopes have been developed by using the results of in-situ and laboratory tests to investigate the mechanisms and types of the slope failure. The safety factor of a slope may be obtained based on the proposed model and the slope can be reinforced to meet the design criteria. The slope should be reinforced by using the optimum model that properly reflects the site condition, the method of reinforcement includes the increased safety factor either by decreasing a slope angle or by reinforcing the slope.

• The Journal of Engineering Geology
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• v.12 no.3
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• pp.295-303
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• 2002

The stability of rock slopes is closely related to the factors such as: type of rock, development of geological structures, weathering, characteristics of rock, and the shape of the geological features. When we design the rock slope, the slope stability is determined by the discontinuity causing the circular, plane or wedge failure. The failure happens when the slope is under the unstable geological condition. But in some cases, slope failure has occurred even though the slope is under stable geological conditions. In this respect, this paper presents the plane failure conditions for domestic rock slopes through research of sites where slope failure has occurred regardless of whether or not it satisfied the stable geological conditions.

• The Journal of Engineering Geology
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• v.32 no.2
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• pp.209-219
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• 2022

To experimentally investigate the variation of soil characteristics in slope during rainfall and the shape of slope failure, the model test was performed using soil box and artificial rainfall simulator. The model test of slope formed by the homogenous sand was performed, and the saturation pattern in the model slope due to rainfall infiltration was observed. The slope model with the inclination of 35° was set up on the slope of 30°, and the rainfall intensity of 50 mm/hr was applied in the test. The soil depth of 35 cm was selected by considering the size of soil box, and the TDR (time domain reflectometry) sensors were installed at various depths to investigate the change of soil characteristics with time. As the result of model test, the slope model during rainfall was saturated from the soil surface to the subsurface, and from the toe part to the crest part due to rainfall infiltration. That is, the toe part of slope was firstly saturated by rainfall infiltration, and then due to continuous rainfall the saturation range was enlarged from the toe part to the crest part in the slope model. The failure of slope model was started at the toe part of slope and then enlarged to the crest part, which is called as the retrogressive failure. At the end of slope failure, the collapsed area increased rapidly. Also, the mode of slope failure was rotational. Meanwhile, the slope failure was occurred when the matric suction in the slope was reached to the air entry value (AEV) estimated in soil-water characteristic curve (SWCC).