Electronic Theses and Dissertation

The high voltage line tower or SUTT is built to provide the electricity needs of the community that reaches throughout all urban areas to rural areas. Several tower buldings which are located in the hills experience erosion of the soil surface on the slopes due to the erosion process that lasts for a relatively long time. The erosion is caused by high rainfall, escarpment and barren slope surface conditions. There are 5 (five) aspects of review in identifying the level of erosion hazard (TBE) that is the estimated rate of erosion, rain erosivity, soil erodibility, slope topography, land management factors and conservation. The data used in this study consisted of soil parameter data obtained from the results of testing physical and mechanical properties in the laboratory, slope topography measurement and rainfall. The analysis showed that the erosion rate on each tower is above the maximum tolerance erosion for the sumatera region (27 – 29 ton/ha/year), where the highest TBE at Tower 141 = 8.301 (very heavy) and the lowest at Tower 138 = 4.023 (very heavy). The results of the calculation of the largest slope safety factor (Fs) at Tower 142 = 0.905 and the smallest at Tower 141 = 0.680. This shows that the slope safety factor (Fs) on each tower is in an unsafe condition (Fs 1.

Keywords : Factor Erosion, Erosion Hazard Level, Slope Safety Factor.

The high voltage line tower or SUTT is built to provide the electricity needs of the community that reaches throughout all urban areas to rural areas. Several tower buldings which are located in the hills experience erosion of the soil surface on the slopes due to the erosion process that lasts for a relatively long time. The erosion is caused by high rainfall, escarpment and barren slope surface conditions. There are 5 (five) aspects of review in identifying the level of erosion hazard (TBE) that is the estimated rate of erosion, rain erosivity, soil erodibility, slope topography, land management factors and conservation. The data used in this study consisted of soil parameter data obtained from the results of testing physical and mechanical properties in the laboratory, slope topography measurement and rainfall. The analysis showed that the erosion rate on each tower is above the maximum tolerance erosion for the sumatera region (27 – 29 ton/ha/year), where the highest TBE at Tower 141 = 8.301 (very heavy) and the lowest at Tower 138 = 4.023 (very heavy). The results of the calculation of the largest slope safety factor (Fs) at Tower 142 = 0.905 and the smallest at Tower 141 = 0.680. This shows that the slope safety factor (Fs) on each tower is in an unsafe condition (Fs 1. Keywords : Factor Erosion, Erosion Hazard Level, Slope Safety Factor.