CAJ | 학술논문

为解决现有悬沙质量浓度分布公式积分难的问题，基于流速幂函数及摩阻流速推导出一个近岸流速垂向分布公式，并结合悬沙扩散方程推导出平衡状态下可有效避免Rouse公式在水表面为零的不合理性的悬沙质量浓度分布公式。近岸水文及泥沙实测资料验证分析结果表明：该流速、悬沙质量浓度分布公式具有较高的准确性；根据流速、悬沙质量浓度分布公式推导的悬沙输沙率公式可由初等函数表示，并能有效解决爱因斯坦方法积分难的问题。
위해결현유현사질량농도분포공식적분난적문제，기우류속멱함수급마조류속추도출일개근안류속수향분포공식，병결합현사확산방정추도출평형상태하가유효피면Rouse공식재수표면위령적불합이성적현사질량농도분포공식。근안수문급니사실측자료험증분석결과표명：해류속、현사질량농도분포공식구유교고적준학성；근거류속、현사질량농도분포공식추도적현사수사솔공식가유초등함수표시，병능유효해결애인사탄방법적분난적문제。
To overcome the difficulties in integration using existing formulas of vertical distribution of suspended sediment concentration, a velocity profile was obtained based on the power function of velocity and the friction velocity, and an equilibrium suspended sediment concentration profile was further deduced. These profiles agreed with field data, and the profile of suspended sediment concentration did not show the unreasonableness of the classical Rouse profile, such as a zero value at the water surface. Verification results of the nearshore hydrologic and sediment data show that the formulas of velocity and suspended sediment concentration had high accuracy. An elementary function for the transport rate of a suspended load was deduced from the formulas of velocity and suspended sediment concentration. It can effectively overcome the difficulty of integration with Einstein's method.