scholarly journals Features of modeling gabion retaining walls for engineering protection of roads on landslide slopes

2019 ◽  
Vol 6 (4) ◽  
Author(s):  
Alexander Ryabukhin ◽  
Darya Leyer ◽  
Shikhambiy Teter ◽  
Maria Karpova
Keyword(s):  
Slope Stability ◽  
Retaining Wall ◽  
Extreme Condition ◽  
Software Systems ◽  
Underground Structures ◽  
Good Convergence ◽  
Erosion Processes ◽  
Under Construction ◽  
Landslide Slope ◽  
Engineering Protection

During the construction of roads in mountainous areas, engineering protection of the highway from landslide processes is often required. Currently, there are many designs used to protect against landslides. However, the engineers are faced with the task of choosing the optimal structural solution both in terms of the boundaries of the field of application of the structures and in terms of economic efficiency. In addition, the problem arises of correct modeling of the predicted situation. The article discusses the engineering protection of the road under construction in Sochi, Krasnodar Territory. In the study of the territory on the site, three landslides were found that are in extreme condition, erosion processes, an elevated level of groundwater, planar flushing, and also weathering of bedrock when they are opened during the laying of the route. Two schemes of constructive solutions using gabion construction both on a natural basis and on a pile are considered. The choice of the type of protective structure is determined by the presence of both surface and ground waters, as well as by a technical and economic comparison (in comparison with a reinforced concrete retaining wall). The authors reviewed existing software systems used in the calculation of underground structures, and also analyzed the basic methods for calculating the slope stability and structural strength. As a result of the study, such geotechnical software systems as: Plaxis, GeoStudio, Geo5 were selected to simulate a landslide slope. Slope stability was determined both for the main combination of loads and for the special one (seismic of 8 points) using such methods as: Phi/c reduction, Morgenstern-Price method and Shahunyants method. The results obtained showed good convergence.

scholarly journals DETERMINANTS OF SLOPE STABILITY REDUCTION / DETERMINANTY ZNI ŽOVANIA STABILITY SVAHU

2013 ◽  
Vol 16 (2) ◽  
pp. 29-32
Author(s):  
Dagmar Dobiašová ◽  
Jozef Streďanský ◽  
Lucia Tátošová
Keyword(s):  
Slope Stability ◽  
Retaining Wall ◽  
Plant Cover ◽  
Anthropogenic Activity ◽  
Real Problem ◽  
Volcanic Area ◽  
High Incidence ◽  
Landslide Body ◽  
Water Accumulation ◽  
The Given

Abstract The formation or activation of landslide movements in Podtatranska kotlina is quite common, as it is flysh and volcanic area. There is a high incidence of sandstones in this area. The sandstones crumble and weather, and this is the reason why the subsoil becomes unstable. The rainfall is accumulated, and there is a danger of soil sliding down. There was located groundwater level in the central part of the slope (in the height of 30 cm), and in some parts, the water accumulation occurred in the depression places on the landslide body. There were created small landslide lakes, where the water was held during the year. The slope was soaked and the erosion started to increase. The slope with its instability has pushed the construction of road that leads underneath the heel of the slope. Neglected and improper construction in areas of slope landslides has become a relatively common phenomenon. Stabilization measures are often made up only when real problem occurs. An anthropogenic activity usually starts this problem. This refers to deforestation, grassing or deformation of slope stability in the heel by improper construction. The landslide was not the first one in the area. In 1898, there was the first landslide, but it was not as intensive as this one. Retaining wall was the only one stabilization measure which was built in that time. It also had a drainage outfall. However, during the summer months in 2010, the stabilization measure was disrupted and cracked. This occurrence started after the slope separation and by the foremost pressure on the given wing wall. During our measurements, we found out that in that area, there was a loss of plant cover, erosion accrued and soil physical properties changed. Our aim is to show the seriousness of the situation and propose appropriate stabilizing measures.

scholarly journals 3D Modelling of the Landslide Slope Stability with Seismic Effect

2020 ◽  
Vol 459 ◽  
pp. 032027
Author(s):  
I K Fomenko ◽  
V V Pendin ◽  
D N Gorobtsov ◽  
D D Shubina
Keyword(s):  
Slope Stability ◽  
Seismic Effect ◽  
3D Modelling ◽  
Landslide Slope

Monitoring and Modeling of Landslide Processes on the Example of the City of Sochi

10.12737/342 ◽  
2013 ◽  
Vol 1 (1) ◽  
pp. 54-61
Author(s):  
Дарья Лейер ◽  
Сергей Маций ◽  
Sergey Maciy ◽  
Екатерина Безуглова ◽  
Ekaterina Bezuglova
Keyword(s):  
Retaining Wall ◽  
Normal Operation ◽  
Railway Tunnel ◽  
Recent Developments ◽  
Landslide Processes ◽  
Complex Monitoring ◽  
Protective Structures ◽  
Landslide Slope ◽  
Slope Condition ◽  
The City

ssible designing of reinforcement constructions. Yet some problems in simulation of landslide situation do occur. Options for using different soil models and calculation schemes are being analyzed on the example of protective structures construction for railway tunnel in the city of Sochi region. Simulation of landslide slope condition is carried out using geotechnical software Plaxis conside­ring different soil models (Linear Elastic и Mohr-Coulomb) and «reconstruction» of structures displacements. The value of retaining wall displacement alongside landslide slope as well as retaining walls sections inner movement is being estimated by results of complex monitoring. Recent developments were causing threat to the safety of building and construction works continuation at the railway and also to the normal operation of structures lower down the slope.

Arched Soil-Cement Walls for Soft Ground Reinforcement of Dike Slope

2011 ◽  
Vol 374-377 ◽  
pp. 2061-2065
Author(s):  
Shou De Li ◽  
Hui Er Xu ◽  
Jian Chen ◽  
Qin Qin Li ◽  
Zheng Hong Tian ◽  
...  
Keyword(s):  
Slope Stability ◽  
Retaining Wall ◽  
Soft Ground ◽  
Lateral Forces ◽  
Soil Cement ◽  
Soft Subsoil

New structure of long straight walls with arched retaining wall was raised to improve the anti-sliding capacity of embankment soft ground. The arched walls embedded in the soft subsoil will transfer lateral forces in reasonable ways. Detailed research shows that the structure of arched walls can greatly increase slope stability and reliability.

Analysis and Treatment of Landslide at the Tunnel Portal in Nanjing Road

2013 ◽  
Vol 353-356 ◽  
pp. 686-691 ◽  
Author(s):  
Zhuan Wen Xiao ◽  
Lei Huang
Keyword(s):  
Shear Strength ◽  
Slope Stability ◽  
Retaining Wall ◽  
Comprehensive Treatment ◽  
Low Permeability ◽  
Treatment Scheme ◽  
Major Treatment ◽  
Design Requirements ◽  
Weak Intercalated Layer ◽  
Tunnel Portal

The landslide at the tunnel portal in Nanjing Road is mainly determined by a weak intercalated layer between the completely weathered bedrock and the strongly weathered bedrock. The weak intercalated layer has low permeability and weak shear strength, and its interface dip outside of the slope. As the consequence, landslide is likely to happen again due to a rainstorm or other inducement. In order to prevent a second landslide, a comprehensive treatment scheme is presented, which implements anti-slide piles as the major treatment and several auxiliary treatments including filling and compacting the cracks, cutting-off and draining water, locally bolt-shotcrete support, and repairing the existing retaining wall and the lattic frame beams. After applying this scheme, the slope stability meets the design requirements.

scholarly journals ANALISIS STABILITAS LERENG MENGGUNAKAN SOFTWARE PLAXIS 8.6 DENGAN DINDING PENAHAN TANAH (RETAINING WALL) (STUDI KASUS RUAS JALAN NASIONAL BANDA ACEH-MEDAN STA 83+135 GUNUNG SEULAWAH)

2018 ◽  
Vol 1 (3) ◽  
pp. 76-82
Author(s):  
Wihardi Wihardi ◽  
Munirwansyah Munirwansyah ◽  
Sofyan M. Saleh
Keyword(s):  
Slope Stability ◽  
Safety Factor ◽  
Retaining Wall ◽  
Road Construction ◽  
Local Area ◽  
Traffic Load ◽  
Road Infrastructure ◽  
The Road ◽  
The Stability ◽  
Banda Aceh

Road infrastructure is very important and is a key enabler for the economy. If the road infrastructure was damaged or had various problems such as sliding, the movement of goods and passengers will be hampered and delayed to the acceleration of development in the local area. The landslide and movement of groundwater is a problem that often occurs repeatedly on some streets. Therefore, it is necessary to study the strengthening of the slopes at the bottom of the road construction with retaining wall. This study aims to analyze slope stability by getting numbers Safety Factor (FK). The analysis is used to analyze the stability of slopesusing the finite element method with the help of software Plaids, The scope of this review includes the calculation of slope stability at the national road from Banda Aceh - Medan Sta. 83 + 185 Mount Selawah. The results of slope stability analysis on the existing condition by using Plaxis software at the point of a review is not safe (FK 1.25). Thus, it is done handling the retaining wall, installation of anchors. Based on the analysis of slope stability after being given the strengthening of the slopes with a retaining wall and the installation of anchors using Plaxis software under the influence of traffic load in an unsafe condition (FK 1.25). Then additional handling is done by changing the angle of the slope so that the value of the safety factor (FK) 1.25.

scholarly journals LANDSLIDE ON LOCATION OF WATER SOURCE STUDENAC NEAR BIJELJINA, REPUBLIKA SRPSKA

2012 ◽  
Vol 1 (8) ◽  
Author(s):  
Neđo Đurić ◽  
Milan Perisić ◽  
Dijana Đurić
Keyword(s):  
Local Community ◽  
Retaining Wall ◽  
Slope Angle ◽  
Stable Condition ◽  
Water Source ◽  
Main Body ◽  
High Plasticity ◽  
Concrete Wall ◽  
Landslide Slope ◽  
Local Road

ABSTRACTThe landslide is located in the hinterland of water source "Studenac" in the local community GornjaCadjavica near Bijeljina. The field where the triggered landslide occurred is conditionally stable slope.It is overgrown with forest trees and therefore it was not a subject of interest in terms of its stabilityuntil the water source and accompanying local road have been constructed in the lower part of theslope. Additionally the slope was undercut resulting in jeopardizing its conditional natural stability. Atfirst, it was about some slight ground movements requiring no significant interventions.As the time was passing by site conditions have been changing. During winter and spring timemovement of rock blocks is more intense due to large amount of surface and underground waterwhereby such a process was significantly slower and almost calm in the summer time. Such a cycle wasrepeated for several years until late 2010 when massive collapse of the unstable zone, which might becalled ‘landslide’, endangered not only the local road but also the water source.For the purposes of overviewing the site and landslide characteristics as a whole, exhaustive researcheswere carried out within the part of the site affected by sliding at the surface of about 0,4 ha. A fieldsurveying of wider area was also conducted. The landslide is located at relatively steep slope where theheight distance between the crown and the toe of the landslide is 14,0 m. General slope angle is up to100 and in those parts where landslides occur they are up to 250. Sliding plane has been formed at depthof 2,5 to 4 m depending on terrain morphology, in clay of high plasticity (CH groups). The main causeof landslides is surface and underground water.Within the scope of remediation project two restorative measures were applied. The main recoverymeasure was placement of AB retaining concrete wall which was intended to accept the pressures ofsoil mass and to prevent it from slipping, namely to maintain the slope in stable condition. The otherremedial measure was construction of an open perimeter canal at the slope above the retaining wall forthe purposes of collecting surface water flowing towards the main body of the landslide and itsdiversion outside the sliding area. Key words: landslide, slope, water source, research, rehabilitation

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