Experimental dataset on water levels in the study of dam downstream semi-circular obstacles’ influence on multiphase floods arising from the silted-up dam-break with 50 to 80% reservoir silting

Experimental dataset of free surface water level: In this file, 4500 water level data points associated with 15 different dam break scenarios were extracted from high-quality experimental video images. The dataset are collected, classified and presented a total of 15 tables in 5 categories based on the initial upstream sediment depths; 15, 17.5, 20, 22 and 24 cm. The upstream reservoir was initially silted-up with 50 to 80% reservoir silting degrees (in respect to 30 cm height of the upstream reservoir). The radiuses of downstream semi-circular obstacles were 0, 4.5 and 7.5 cm. Tables 1, 2 and 3, present the free surface water level data at 20 different locations along the flume and 15 snap times after the dam break, while initial upstream sediment depth was 15 cm and the radiuses of downstream semi-circular obstacle were 4.5, 7.5 and 0 cm respectively. Tables 4, 5 and 6, provide the free surface water level data at all abovementioned sections and snap times, while initial upstream sediment depth was 17.5 cm and the radiuses of downstream semi-circular obstacle were 4.5, 7.5 and 0 cm respectively. Tables 7, 8 and 9, provide the free surface water level data at all abovementioned sections and snap times, while initial upstream sediment depth was 20 cm and the radiuses of downstream semi-circular obstacle were 4.5, 7.5 and 0 cm respectively. Tables 10, 11 and 12, provide the free surface water level data at all abovementioned sections and snap times, while initial upstream sediment depth was 22 cm and the radiuses of downstream semi-circular obstacle were 4.5, 7.5 and 0 cm respectively. Finally, tables 13, 14 and 15, provide the free surface water level data at all abovementioned sections and snap times, while initial upstream sediment depth was 24 cm and the radiuses of downstream semi-circular obstacle were 4.5, 7.5 and 0 cm respectively. The unit that has been used to measure data is centimeter and the abbreviations including O_r and S_d are the radiuses of downstream semi-circular obstacles and upstream initial sediment depth, respectively. Time also refer to the time snaps after sudden removal of the gate using second as a unit of measurement. It should be noted that the vertical column on the left of the tables indicates the distances of different locations in centimeter from the beginning point of the laboratory flume. So, L column indicates all 20 distinct locations along the flume and their distances from the reservoir beginning in centimeter as a unit of measurement. Affiliations: 1st Author: Foad Vosoughi, Research Associate, Department of Civil and Environmental Engineering, Shiraz University, Shiraz, Iran. [e-mail] 2nd Author: Gholamreza Rakhshandehroo, Professor, Department of Civil and Environmental Engineering, Shiraz University, Shiraz, Iran. 3rd Author: Mohammad Reza Nikoo, Associate Professor, Department of Civil and Environmental Engineering, Shiraz University, Shiraz, Iran.自由表面水位实验数据集： 本数据集从高质量实验视频影像中提取了对应15种不同溃坝场景的4500组水位数据。本数据集基于上游初始淤积水深分为5大类，共整理为15张表格，对应初始淤积水深分别为15、17.5、20、22与24厘米。实验初始状态下，上游水库淤积程度为50%至80%（以水库高度30厘米为基准），下游半圆形障碍物的半径分别为0、4.5与7.5厘米。 表1、表2与表3展示了当上游初始淤积水深为15厘米、下游半圆形障碍物半径分别为4.5、7.5与0厘米时，溃坝后沿水槽20个不同测点位置以及15个采样时刻的自由表面水位数据。表4、表5与表6则对应上游初始淤积水深为17.5厘米、下游半圆形障碍物半径分别为4.5、7.5与0厘米时，上述所有测点与采样时刻的自由表面水位数据。表7、表8与表9对应上游初始淤积水深为20厘米、下游半圆形障碍物半径分别为4.5、7.5与0厘米时的同类数据；表10、表11与表12对应上游初始淤积水深为22厘米、下游半圆形障碍物半径分别为4.5、7.5与0厘米时的同类数据；最后，表13、表14与表15对应上游初始淤积水深为24厘米、下游半圆形障碍物半径分别为4.5、7.5与0厘米时的同类数据。 本数据集采用厘米作为数据计量单位，缩写O_r与S_d分别代表下游半圆形障碍物半径与上游初始淤积水深。时间单位为秒，指代溃坝闸门突然移除后的采样时刻。需要说明的是，表格左侧的纵向列标注了各测点距离实验室水槽起始点的厘米级距离；其中L列涵盖沿水槽分布的全部20个测点位置，并标注了各测点距离水库起始点的厘米级距离。 作者信息： 1. 第一作者：Foad Vosoughi，设拉子大学土木与环境工程系助理研究员，电子邮箱：[e-mail] 2. 第二作者：Gholamreza Rakhshandehroo，设拉子大学土木与环境工程系教授 3. 第三作者：Mohammad Reza Nikoo，设拉子大学土木与环境工程系副教授