Page - 355 - in Book of Full Papers - Symposium Hydro Engineering

The exponent number and independent variables are also simplified and the results are shown in fig 5. Figure 4. Predictions of final formula of height increment of sand bars (left); Figure 5. Prediction of final formula of sedimentation quantity (right) Take the physical expressions of all the variables into equation [8] and [9], we can get the final formula as follows: ∆h = 0.534( 𝑄 ∗ √𝑔 𝐷 50 5 ) 0.4 ( 𝑆 𝜌 ) 0.4 ( 𝐵 ℎ 𝐵 𝑚 ) −0.1 𝐿 𝐿 0 (R2=0.638) [10] ∆V = 85.57( 𝑄 ∗ √𝑔 ) 1.4 𝐷 50 −0.5 ( 𝐵 ℎ 𝐵 𝑚 ) 0.3 𝐽 𝑧 0.3( 𝐿 𝐿 0 )0.7 （R2=0.820） [11] 5. SENSITIVE ANALYSIS The aim of sensitive analysis are: (1) searching the sensitive factor and using the factor to control the dependent variable; (2) confirming the limitation of the dependent variable. In this chapter, the annual height increment of sand bar in tributaries and depositing volume in tributaries are two dependent variables. Using the data in Zhenshui River in 2012, we did sensitive analysis in table 4 and table 5: 355