The study of rock slop stability along the road adjacent to the flood plain of Tigris River in Al-Hajjaj District/ Salah Addin Governorate
Sura E Abdullah, Mohammed R Abood, Ghazzi A Zarraq
This work aims to conduct a study of the stability of the rocky slopes on the road adjacent to the floodplain in Al-Hajjaj district in Salah Al-Din Governorate. The study involves (6) stations within the formation of Injana, which unfolds in the region in the form of horizontal layers, in addition to the sediments of the Quaternary age. Many Failures were diagnosed, including what happened as rock falls due to the presence of vertical and overhanging slopes and differential erosion, as the mud layers in the formation of Injana are more affected by erosion than the sand layers, which led to the occurrence of overhanging slopes and when the cohesion between the discontinuities became zero, the rock blocks fall due to their weight and there is a possibility of occurrence toppling failure due to differential weathering between sandstone rocks and mudstone rocks and the presence of vertical slopes. Outside the base of reference shows kinetic analysis using softwareDips-v6-008 that it gives a preliminary assessment of the types of failures, as well as it is short in time and its results facilitate the assessment of stability by means of the rock mass rating system of slope (SMR). It showed the probability of a plane sliding in the following stations (1,2,5,6), a wedge sliding in the following stations (1,3), and Toppling in the following stations (2,4,5,6). Using the SMR Tool-v205 program, the classification values of discrete and continuous SMR show that the value of the discrete SMR and the value of the continuous CSMR in the worst case (the lowest value of the SMR) for wedge sliding and plane sliding at stations (1,5) and their value ranges from (28)- (22) This means that the rock mass falls within the fourth category (IV), meaning that the slope is unstable, as for the flexural toppling, its value ranges from (68) – (77) in stations (1,2,4,5,6), which means that the rock masses fall into the second category (II), meaning that the slope is in a stable condition.
Sura E Abdullah, Mohammed R Abood, Ghazzi A Zarraq. The study of rock slop stability along the road adjacent to the flood plain of Tigris River in Al-Hajjaj District/ Salah Addin Governorate. International Journal of Academic Research and Development, Volume 7, Issue 5, 2022, Pages 13-18