The present invention is directed to a method of installing an erosion-preventing lightweight, semi-permeable, semi-flexible structure in the form of a dike for erosion control of a bank along a body of water. The method comprises the excavation of hydraulically placed silty or clay-containing sand fill...http://www.google.es/patents/US4521131?utm_source=gb-gplus-sharePatente US4521131 - Lightweight semi-flexible dike
