Seite - 352 - in Book of Full Papers - Symposium Hydro Engineering

Table 2. Selection I of independent variables for the evolution of sand bars - water and sediment processes Water and sediment conditions factors Water level condition ?̂? 1 Flow Condition I ?̂? 2 Flow Condition II X̂2 ∗ Sediment condition I ?̂? 3 Sediment condition II X̂3 ∗ Direct Indexes Averaged water level in flood season H（m） Averaged inflow of the reservoir in flood season Q（m3/s） Averaged outflow of the reservoir in flood season Q*（m3/s） Averaged sediment flowing into the reservoir in flood season S(kg/m3) Averaged sediment flowing out of the reservoir in flood season S*(kg/m3) Dimensionless indexes 𝐻 𝐷 50 𝑄 √𝑔 𝐷 50 5 𝑄 ∗ √𝑔 𝐷 50 5 𝑆 𝛾 /𝑔 𝑆 ∗ 𝛾 /𝑔 Table 3. Selection II of independent variables for the evolution of sand bars -local terrain and flow regimes Local terrain conditions Local flow regimes Factors Terrain conditions in the tributaries ?̂? 4 Terrain conditions in the main channel ?̂? 5 Location of the front of the Delta ?̂? 6 Direct indexes Width of the river mouth of the tributaries Bh(km) Maximum width of the tributaries Bm(km) Gradient Jz(1) Distance from the river mouth to the dam L0(km) Distance from the front of the delta to the dam L(km) Dimension- less indexes 𝐵 ℎ 𝐵 𝑚 Jz 𝐿 𝐿 0 352