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山区弯道水流多为急流,不仅在弯道内形成横向环流,而且在水面上形成菱形交叉的冲击波,断面水深和动量分布极不均匀,流态趋于恶化,给下游的消能防冲工作带来很大困难。根据斜槛法原理推算出斜槛高度的计算公式,并以某核电站厂区山洪消能工程为例,探讨了斜槛的间距、角度等影响斜槛设计的因素,提出了合理的斜槛设计方法。结果表明,在弯道中合理地设置斜槛,可达到改变水流结构、消散下泄水流能量的目的,可为消能设施的初步设计提供参考。
In the mountainous area, most of the water flow in the mountainous area is in the form of jet streams, which not only form lateral circulation in the curve, but also form diamond-shaped shock waves on the water surface. The distribution of water depth and momentum is extremely uneven and the flow regime tends to deteriorate. To great difficulty. Based on the principle of slope sill method, the calculation formula of slope slanted height is deduced. Taking the flash flood energy dissipation project of a certain nuclear power plant as an example, the factors that affect the design of slope sill are discussed, such as spacing and angle of slope sill, . The results show that the reasonable setting of the sill in the curve can achieve the purpose of changing the water flow structure and dissipating the energy of discharged water flow, which can provide a reference for the preliminary design of energy dissipation facilities.