Su-Gon Lee's research while affiliated with University of Seoul and other places
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Publications (8)
Some Authors highlight the hysteretic response to wetting of unsaturated soils, showing that the operative SWCC may significantly diverge from the one usually adopted in conventional approaches. Accounting for the typical range of values covered by the suction–degree of saturation relationship for loose granular pyroclastic soils, the paper examine...
We must precisely investigate the mechanical characters of rock to design rock slope safely and efficiently. But the method of clinometer has some disadvantages. So, we need a new measurement that can replace the method of clinometer. In this study, we analyze the reliability of joint orientation measurements in rock slope using the 3D laser scanne...
The Bangudae petroglyph is one of the most important examples of Korean prehistoric art. The petroglyph however has been subjected to annual submergence and drying since the impounding of a reservoir in 1965, which has led to some deterioration. The deterioration and need to preserve the petroglyphs has become an important matter of public concern....
Characteristics of water-level changes in the Temporary Gulpocheon Discharge Channel were identified by observing and analyzing changes in the subterranean water level induced by hydrological stresses the underground aquifer. The subterranean water level refers to the level at which the pressure of subterranean water passing through the correspondi...
This study concerns Sanbang Mt. (476 m in height) on Jeju Island in Korea, located to the south of the Korean peninsula. The mountain and is a natural heritage site and attracts many tourists due to its beauty. The mountain largely comprises trachyte with well-developed columnar joints, which are 1–2 m in diameter and 10–50 m in height. Many rock f...
During 2011 a large number of landslides occurred in South Korea as a
result of heavy rainfall (160~300mm/day) which fell between 19 June and
27 July. Fifty eight people were killed and 200 injured at 11 locations.
Almost 80% of the fatal landslides can be attributed at least in part to
human activities such as an army camp, pedestrian road, forest...
The failure of slopes and the subsequent costs of remedial works are often the result of insufficient geological investigation and inadequate interpretation of ground conditions prior to design. This is compounded by poor investigations into the causes of failures and systemic problems associated with poorly defined responsibilities for the stabili...
At the mudstone slope located on the roadside of the Seokri area in Donghae-myeon, Pohang, Gyeongsangbuk-do, this study was performed to analyze the effects of rainfall on the stability of slope through seepage analysis according to the precipitation type of the mudstone slope, referring to the actual case of slope failure. For this, precise geolog...
Citations
... Their results showed that FS using laboratory SWRC/SWCC is similar to the water content on the wetting side of the curve but using SWRC/SWCC on the drying side yields a more conservative FS. Cai et al. [476] conducted an experimental study to investigate the behavior of soil post landslides induced by earthquake and found that matric suction contributes to stability of rill banks of shallow depths in unsaturated condition. They used two popular models (i.e., van Genuchten [16] and Brook-Corey [47]) to establish the SWRC/SWCC and found that the van Genuchten model yielded a better fit reflecting the dominance of preferential flow in gravelly soil. ...
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... Sustainability 2019, 11, 945 2 of 20 engineering, construction, aviation, archeology, geology, and the game and movie industries. In the rock engineering field, LiDAR has been employed for studies on the evaluation of joint roughness [1-4], trace sampling of joints [5][6][7], analysis of joint orientation [8], analysis of slope stability [9,10], analysis of rockfall and toppling [11,12], analysis of blasting over-break [13,14], and geometry research of underground mines [15]. The utilization of LiDAR is expected to increase in the future in study fields that require quantitative analysis. ...
... While techniques for such hazard assessments have undoubtedly moved on and significantly improved in the intervening near-40 years, the Korean government grants consent for the construction of houses, roads, and other buildings and infrastructure based on the landslide hazard map. Lee and Hencher (2014) pointed out that serious landslide damage often occurs in areas that had been identified on the map as low hazard (Lee and Hencher, 2014), demonstrating a clear need for updating of the available hazard map and additional work to develop risk maps for different types of construction. ...
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... Generally, the previous slope failure could trigger the subsequent failures, thus increasing the costs of remedial works. For example, a cutslope reported by Lee and Hencher (2009) failed six times even after several different remedial schemes. ...
