부산대학교 도서관

The impacts of moving bedload particles on hydraulic structures or natural bedrock in rivers can cause substantial and sometimes fast erosion, with implications for structural stability and the morphodynamics of channels. For a given set of hydraulic and sediment load conditions (termed erosivity), erosion rates are modulated by the resistance of the substrate, which is quantified in a scaling parameter termed erodibility. In this technical note, we describe in detail an experimental setup and protocol to measure the relative erodibility of natural rocks under fluvial impact erosion. The experiments were designed to achieve four central aims: to provide (1) comparable experimental conditions by keeping erosivity as constant as possible; (2) cheap, easy-to-build, and easy-to-use experimental devices; (3) a straightforward and reproducible experimental protocol; and (4) avoid special needs in terms of space, equipment, connections or fixtures. We suggest that our design and approach can serve to provide a standardized protocol for measuring comparable data on erodibility under fluvial impact erosion of natural rocks and manmade materials in the laboratory. [ABSTRACT FROM AUTHOR]