以往的溢洪道弯段消能导流措施多适用于宽深比（溢洪道宽度与平均水深之比）较小的弯道，对于宽深比较大的弯段溢洪道消能导流问题研究较少。结合新疆“635”溢洪道整治工程，在一般工程措施解决弯段溢洪道横向环流的基础上，提出糙条辅助消能工的新体型。为深入探究糙条的水力特性及导流机理，通过模型试验结合数值模拟的研究方法;基于RNG k-ε湍流模型对弯段溢洪道7种工况进行数值模拟计算，并与试验结果对比研究。结果表明：针对大宽深比弯段溢洪道的消能导流问题，糙条新体型有传统辅助消能工无法取代的优势，且在解决弯道环流、降低水面横比降、缩短下游调整段距离的同时，水面流态依然较传统型消能工优越。

The traditional energy dissipation and diversion measures of the curved spillway are mostly applicable to the curves with a smaller breadthdepth ratio (e.g.,the ratio of spillway breadth to average water depth),however,the problems of energy dissipation and diversion for the curved spillway with larges breadthdepth ratio have been reported in the literature.The new type of rough strips energy dissipator was proposed in this study based on the general engineering measures to solve the transverse circulation in curved spillway and combination with 635 Spillway Regulation Project in Xinjiang..In order to further explore the hydraulic characteristics and the diversion mechanism of the roughstrips,numerical simulations and experimental studies were used in this study,i.e.,numerical simulation on the seven working conditions of the bending based on the RNG k-εturbulence model.The results showed that the new type of rough strips had the advantages over the traditional auxiliary energy dissipator,which is not applicable to energy dissipation and the curved spillway with larges width to depth ratio.The flow patterns of water surface was also superior to that of traditional energy dissipator,while solving the circulation current in river bend, reducing the transverse slope of water surface and shortening the distance of downstream adjustment section.

国家自然科学基金(51769037;51469031);新疆维吾尔自治区高校科研计划创新团队项目(XJEDU2017T004);新疆农业大学研究生科研创新项目(XJAUGR12017032)