结果表明，达到动力平衡时，河道中发育的床面结构越强，消耗水流能量越多，从而稳定维持的纵坡降越大，因此在一定程度上决定了河道纵剖面。
The results indicated that more intense streambed structure means greater stream power consumption and steeper channel slope when rivers are in dynamic equilibrium.
对圣维南方程组进行离散后，用追赶法对各河道进行演算，由水量平衡原理对各结点进行计算，就可求得河道各断面的水流情况。
After the derivation of the Saint-Venant Equations, water level and discharge of each cross-section are derived by the recursion method and the principle of water balance.
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