This project is about landsliding and slope instability, firstly, it is talked about the definition of these two expressions, landsliding is the ground movement, such as rock falls, deep failure of slopes and shallow debris flows, main causes of landsliding may be natural causes such as earthquakes, heavy rainfall, tectonic movements, frost, dry spells, Rapid drawdown, volcanic eruption, and may be human causes such as clear cutting, mining, construction operation.
The effects of landsliding are economic losses, damage to transportation, loss of life, changes in the Surface Landscape.
Landslides or slope movements can be classified in many ways to help the engineer or the geologist when he tries to determine the causes of landslides and the measures which can be taken to prevent or to correct landslides, the types of landsliding may are Translational Slides, Slump or rotational slide, Topple, Torrent, Fall, Flows, Creep.
slope stability may be defined as the resistance of inclined surface to failure by sliding or collapsing, Types of slopes that are considered in slope stability may be divided into two main types of slope which are infinite slope and finite slope.
Description of the problem:
This project presents description of one of the significant slope instability problems that affects the area between Nablus District and Al-Ghor Region. Descriptions of the topography and soil stratification of the area are presented in this project, this project shows the detailed slope stability analysis using specialized slope stability software called Slope/w for GeoStudio 2007. Finally, conclusions regarding the results of slope stability analysis will be presented in this project.
The Nablus – Al-Bathan Road was widened, reconstructed and rehabilitated in 2009 by Nablus Public Works and Housing Directorate. In 2010 the road had defects at the eastern part in several places and especially at Station 2+100. Some minor remediations were carried out to fix these defects. In 2011 road defects reappeared at several locations these defects can be described as longitudinal cracks along the eastern side of the road, in addition to initial sliding of this part of the road. In March 2012, PWHD - Nablus attempted to fix these defects at station 2+100 by replacing the soil and using big boulders to support the road. Unfortunately, large settlement occurred in the part of the road under maintenance and more sliding and slope instability in the road occurred.