Reactivation of Old Landslides Due to Construction of Highway Embankment and the use of Bored Piles to Reduce Mass Movement and Increase Slope Stability

Numerous studies indicate that tsunamis do not only occur in oceans but also in lakes. Lake Tsunamis are mainly caused by sublacustrine and subaerial mass movements that can be triggered by seismic or aseismic processes (Schnellmann et al. 2002, Strasser et al. 2007, Kremer at al. 2012, Hilbe and Anselmetti 2015). Such tsunamis can have devastating effects on the surrounding population and infrastructure.To assess the tsunami hazard triggered by sublacustrine mass movements, the stability of the lake slopes needs to be examined. As a part of the SNSF funded SINERGIA project &#8220;Lake Tsunamis: Causes, Controls and Hazard&#8221;, we perform the slope stability analysis based on the comprehensive geotechnical in situ and laboratory dataset for the selected sites of Lake Lucerne, Central Switzerland.During 2018-2019 dense geotechnical investigations were carried out along slope-perpendicular profiles at 10 sites where the slopes have failed in the past or are susceptible to failure and included more than 130 in-situ free-fall cone penetration tests with pore pressure measurement (CPTu) and laboratory analysis of 30 short sediment cores. Already existing reflection seismic dataset complements these data and provides the thickness of different sediment layers.1D undrained, infinite slope stability analysis following Morgenstern and Price (1965) is used to define the Factor of Safety and critical conditions for deltaic and lateral slopes, where different triggers can be responsible for the failure. Based on the conducted analysis, static and dynamic stability together with critical failure conditions for different slopes in Lake Lucerne can be compared.&#160;References:Hilbe, M. and Anselmetti, F.S. (2015) Mass Movement-Induced Tsunami Hazard on Perialpine Lake Lucerne (Switzerland): Scenarios and Numerical Experiments. Pure and Applied Geophysics 172, 545-568.Kremer, K., Simpson, G., Girardclos, S. (2012) Giant Lake Geneva tsunami in AD 563. Nature Geoscience 5, 756-757.Morgenstern, N.R. and Price, V.E. (1965) Analysis of stability of general slip surfaces. Geotechnique 15(1): 79&#8211;93.Schnellmann, M., Anselmetti, F.S., Giardini, D., McKenzie, J.A., Ward, S.N. (2002) Prehistoric earthquake history revealed by lacustrine slump deposits. Geology 30, 1131&#8211;1134.Strasser, M., Stegmann, S., Bussmann, F., Anselmetti, F.S., Rick, B., Kopf, A. (2007) Quantifying subaqueous slope stability during seismic shaking: Lake Lucerne as model for ocean margins. Marine Geology 240, 77-97.

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Stability Analysis and Evaluation of the Dam Influenced by Bridge Construction

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.71-78.1375 ◽

2011 ◽

Vol 71-78 ◽

pp. 1375-1378

Author(s):

Mei Li Meng ◽

Li Wei Han ◽

Hai Bin Gao

Keyword(s):

Stability Analysis ◽

Slope Stability ◽

Highway Bridge ◽

Vertical Force ◽

Bridge Construction ◽

Analysis And Evaluation ◽

Bored Piles ◽

The Stability

Drilling bored piles foundation has been built in the dam and reservoir because of the highway bridge across the dam. Considering the bridge built, the horizontal and vertical force will be passed and act on the dam base. Based on Bishop method, the stability of the dam was analyzed and results showed that the dam can not satisfied with the slope stability requirements. Therefore, concrete measures for reinforced were put forward in order to remove dangers and reinforce the dam.

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Kinematic and Rock Mass Classification Assessment of Road Cut Slopes along with Karakoram Highway in Northern, Pakistan

10.20944/preprints202102.0452.v1 ◽

2021 ◽

Author(s):

Asif Razzaak ◽

Tang Huiming ◽

Ijaz Ahmed ◽

Lei Huang

Keyword(s):

Slope Stability ◽

Mass Movement ◽

Seismic Zone ◽

Snow Melting ◽

Wedge Failure ◽

Discontinuity Sets ◽

Stable Conditions ◽

Karakoram Highway ◽

Cut Slopes ◽

Road Cut Slopes

Karakoram highway (K.K.H.) the only road link between two countries China and Pakistan. This road network is essential for two countries due to its strategic location and socioeconomic. The highway is more vulnerable due to landslide disasters, especially in rain and snow melting seasons, and different kinds of mass movement activities have occurred along K.K.H., such as rockfall, debris flow, and snow avalanche. The slope stability problems are widespread along with Karakorum (K.K.H.) between Besham city and the Dasu area because of the high seismic zone, rainfall, snow melting, and complex geology slope geometry, week, and adverse discontinuities sets. The detailed fieldwork was done along the Karakorum highway to minimize the risk of slope stability and for planning purposes in Besham to Dasu area and selected nine road-cut slopes. However, in these nine selected roadcut slopes, three slopes were already failed, four slopes are partially stable, and two slopes were stable. Both kinematic and empirical approaches are applied on all these nine road cut slopes and their discontinuities. The kinematic result has shown that all kinds of mode failure such as Toppling, Planar, and Wedge failure mode occurred in these slopes. The RMRb result has shown that all discounters lie in between fair to good rock. Both discrete and continuous (S.M.R.) results show that all discontinuity sets lie between the unstable, partially stable, and stable conditions.

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Landslide and slope stability evaluation in the historical town of Kruja, Albania

Natural Hazards and Earth System Science ◽

10.5194/nhess-14-545-2014 ◽

2014 ◽

Vol 14 (3) ◽

pp. 545-556 ◽

Cited By ~ 5

Author(s):

Y. Muceku ◽

O. Korini

Keyword(s):

Slope Stability ◽

Urban Area ◽

Mass Movement ◽

Geological Mapping ◽

Stability Evaluation ◽

Movement Activity ◽

Engineering Geological Mapping ◽

The Past ◽

Field Works ◽

Cultural Monuments

Abstract. This paper describes landslides and slope stability evaluation in the urban area of Kruja, Albania. Kruja is a historical and heritage center, due to the existence of many important cultural monuments, including "Skanderbeg" castle and Bazaar square, etc. The urban area of Kruja has been affected by landslide effects, in the past and also the present. From this phenomenon many engineering objects such as buildings, roads, etc., are damaged and demolished. From engineering geological mapping at scale 1:5000 it is observed that many active landslides have dramatically increased in activity since the 1980s. The landslide types found in the studied area are earthslides, debris flow, as well as rockfall and rock rolling. Also, from field works and laboratory analysis, the slope stability of the whole urban area has been determined; for this purpose the studied zone is divided into stable and unstable areas, which helps to better understand mass movement activity as one of the most harmful hazards of geodynamic phenomena.

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