Data for the manuscript " Experimental Investigation on Scouring v.s. Mass Failure of Unsaturated Soil Bed: Implications for Debris Flow Initiation and Erosion"

The data uploaded supports the content in the manuscript "Experimental Investigation on Scouring v.s. Mass Failure of Unsaturated Soil Bed: Implications for Debris Flow Initiation and Erosion". The data uploaded are generated in the laborotory and includes the measurement of flow depth, erosion depth, erosion duration, etc. in 30 flume experiments. The experiments carried out investigate the erosion of unsaturated soil bed by hydrodynamic shear stresses. During the experiments, an ultrasonic sensor, a high speed camera and a laser sensor are eqquipped with the flume. The ultrasonic sensor measured the evolution of flow depth during the experiment. The high speed camera is installed at the side of the flume, and captured the kinematics of the flow and the erosion process. The duration of the erosion process was deduced from the images captured by the high speed camera. The laser sensor is used to measure the depth of erosion, which is deduced by the difference in the height of the soil surface before and after the experiment.

本次上传的数据集支撑了题为《非饱和土床冲刷与大规模失稳试验研究：对泥石流启动与侵蚀过程的启示》的手稿内容。本数据集由实验室环境下生成，涵盖30组水槽试验中测得的水流深度、侵蚀深度、侵蚀时长等多项数据。本次开展的试验旨在探究水动力剪切应力对非饱和土床的侵蚀作用。试验过程中，水槽搭载了超声传感器、高速摄影机与激光传感器：超声传感器用于采集试验过程中水流深度的动态变化过程；高速摄影机安装于水槽侧面，可记录水流运动与侵蚀过程的动态影像，侵蚀过程的总时长可通过其拍摄的影像推导得出；激光传感器用于测定侵蚀深度，该深度值通过试验前后土表高度的差值计算得到。