“The Field Scale Quantification Of Geomembrane Wrinkles"
By: Melissa Chappel
Wrinkles in a 1.5-mm-thick, textured, high-density polyethylene geomembrane on a 65-m-long slope inclined at 3 horizontal to 1 vertical were captured with aerial digital photography and quantified with digital image analysis. For the particular date and time of day reported there were 2286 wrinkles with a height greater than 3 cm in a 65 m by 120 m area. Most of these wrinkles had widths between 0.1-0.3 m and lengths less than 7 m. However, there were a few very long wrinkle features that essentially extended the full length of the 65-m-long slope. The percentage of the area occupied by the wrinkles increased with the distance from the top of the slope, reaching a maximum of 26% of the total area.