Solution and method for protection of Lupeni City – Jiu Valley against flood waves produced by the overflow of Renghi Creek

Abstract:
Special weather events manifested in a previous period in Jiu Valley, which consisted of precipitations with maximums of 130l/m2, provoked production of flood waves and maximum water flows of up to 25m3/s on the Renghi Creek. As an effect of this unwanted event, has been reported erosion, dislocation and training, to the city, of some important quantities of material deposited in the waste dump 2 West belonging to the closed Ileana Mine. In the paper is presented the designed and applied solution to counter this event and, respectively to protect the city, which consists in execution along the crossed dump of an concrete channel for water acquisition and routing, channel provided at the bottom with a drain, constituted by a network of perforated tubes and reverse filter for overtaking the possible infiltration waters provided from the waste dump. In order to avoid the deterioration of the creek’s banks, the solution consists, supplementary, of mounting of a protection wall, consists of two overlapping rows of gabions