engleski

Monitoring of vertical cuts in soft rock mass, defining erosion rates and modelling time- dependent geometrical development of the slop

Usage of Terrestrial Laser Scanners (TLS) is currently the best way of monitoring and detecting changes in slope morphology. In this study Optech ILRIS-3D was used. First scan of slope morphology with ILRIS-3D was made in March 2012 at presented pilot location “Žnjan” and it was repeated in 6 month intervals to this day. Series of observations in man-made cuts at additional 14 pilot sites usingTLS were also made. For the purpose of forecasting and retrograde analysis, the survey was conducted in different time intervals and number of observations. Main goal of this monitoring was to define the average rate of erosion in cuts in this type of material. Also, a proper procedure for establishing future monitoring in this type of materials is introduced, as well as guidelines for selecting minimum and maximum time intervals. Finally, based on the results of monitoring, known mathematical model for development of erosion in cuts is calibrated and the guidelines for its usage are proposed.

marl; soft rock; cut; TLS; monitoring; modelling; back analysis

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