ABSTRACT
The inclinometer measurement method is used widely to monitor unstable slopes encountered in open-pit mines. Although an indispensable method for determining the horizontal displacement, implementation of the method is quite expensive and difficult. In order to determine the deformation behavior, in situ measurements should be followed with frequent intervals. However, because of adverse weather conditions, inclinometer measurements sometimes cannot be performed. To predict the inclinometer measurement values that were not performed, a mathematical model was developed based on the time and rainfall. To test performance of the mathematical model, inclinometer measurement results obtained from 9 boreholes in Orhaneli-Turkey coal mine region were used. According to the data obtained from the in situ measurements monitored for approximately one year, in the mouth of the boreholes and also in the depth of the shear plane, horizontal displacement values in the north-west direction were determined as 19 mm and 20 mm, respectively. It was determined that the mathematical model results predicting the horizontal displacement values were strongly related to the in situ inclinometer measurement results. Thus, when in situ measurements cannot be performed, the engineers can interpret the graphical outputs that are prepared using the predicted displacement values.
