1Department of Earth Sciences, University of Turin, 10135 Turin, Italy
2Department of Civil-Environmental Engineering and Architecture, University of Parma, 43124 Parma, Italy
Received: 09 Mar 2016 – Discussion started: 22 Mar 2016
Abstract. The aim of this paper is to analyse debris flow impact against rigid and undrained barrier in order to propose a new formulation for the estimation of acting force after the flow impact to safe design protection structures. For this reason, this work concentrates on the flow impact, by performing a series of small scale tests in a specifically created flume. Flow characteristics (flow height and velocity) and applied loads (dynamic and static) on barrier were measured using four ultrasonic devices, four load cells and a contact surface pressure gauge. The results obtained were compared with main existing models and a new equation is proposed. Furthermore, a brief review of the small scale theory was provided to analyse the scale effects that can affect the results.
Revised: 16 Jun 2016 – Accepted: 01 Jul 2016 – Published: 22 Jul 2016
Vagnon, F. and Segalini, A.: Debris flow impact estimation on a rigid barrier, Nat. Hazards Earth Syst. Sci., 16, 1691-1697, doi:10.5194/nhess-16-1691-2016, 2016.