Abstract
The rock slope instability along the Khalifan-Bekhal-Rawanduz main road has been studied in the southwestern limb of the Bradost anticline (Mountain) and both northeastern and southwestern limb of the Korek anticline (Mountain) in the northeast of the Erbil city, Kurdistan Region, Iraq. The major factors of the instability of the rock slopes in the study area are types of discontinuous and the degree of erosion. Ten stations have been chosen for fieldwork. The expected failure types that may occur along the road are plane sliding and wedge sliding. This research is mainly focused on the type of failure along the rock slope and the factor that affect the instability of the studied slopes and have found that they are slope orientation and geometry of the discontinuity. Different remediation methods are proposed for the studied rock slopes base on rock slope analysis. The rock slopes along the road require continuous monitoring because of their hazard conditions.
Highlights
Evaluation of the stability slope along and around the road is a necessary assignment due to their effect on human life as well as properties
In order to assess the stability along the slope, a number of sites was chosen and at all of them, the rock slope and discontinuities attitude were measured using by Brunton compass to determine the strike, dip angle and dip direction that is given in Table 2, the data at each site applied to make a stereographic projection by using Stereonet 8 Software (Allmendinger et al 2012)
The rock slope failure is mostly founded in the Southwest limb of Bradost anticline and Northeast to Southwest limb of the Korek Anticline along the Khalifan -Bekhal - Rawanduz main road
Summary
Evaluation of the stability slope along and around the road is a necessary assignment due to their effect on human life as well as properties. Some localities in the SW limb of Bradost anticline and both SW and NE limbs of the Korek anticline were chosen for this research because the main road was included. The stability problem of the rock slopes along the road in the study area is a major concern in most places because the rock sliding directly affects human lives and traffic activities. The rock sliding is active in the SW limb of Bradost and the NE limb of the Korek anticline.
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