Assessment of slope stability and monitoring of a landslide in the Koyulhisar settlement area (Sivas, Turkey)

摘要: The Koyulhisar settlement area is located in the seismically active zone of Kelkit valley. has been adversely affected by landslides as a result which some houses have evacuated. In this study, areas within where exist were delineated with field mapping technique, and investigated means observations, drilling, sampling, laboratory testing, situ monitoring using an inclinometer. Based on studies, it observed that flyschoidal sequence bedrock colluvium consisting clay silt gravels comprise main lithological units. Two identified. One landslide local there no adverse effects houses. However, other one was detail due to its effect important governmental buildings. This slide non-circular failure surface caused existence forms resistant below colluvium. inclinometer measurements reveal displacements are their velocities generally less than 14 mm/year, indicating extremely slow. addition, high groundwater table slow snow melt major environmental parameters occurrence landslide. Nevertheless, slope stability analyses lowering alone not effective measure increasing therefore either reinforcement should be applied entire or abandoned.