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库区堤渠排沙清淤问题是水库管理的重点问题。利用水沙数学模型,基于拟牛顿法对该数学模型进行求解并编制程序River-Hydraulics。结合实际工程中程序利用情况,研究了库区堤渠在水库排沙问题中的适用性,结果表明:堤渠输沙技术能够很快地排尽淤沙,且其排沙速率与时间呈负指数关系。该方法的排沙效率较高,耗水较少,具有很强的适用性和操作性。
Sediment drainage dredging reservoir area is the key issue of reservoir management. Based on the quasi-Newton method, the mathematical model was solved and the program River-Hydraulics was developed. Combined with the practical application of the program, the study on the applicability of dike in the reservoir area to the problem of sediment discharge in reservoirs shows that: the dike sediment transport technology can quickly drain sediment, and the sediment discharge rate and time are negative Exponential relationship. The method has high sand discharging efficiency and less water consumption, and has strong applicability and operability.