跌坎底流消力池在某高水头闸坝工程中的应用

针对高水头、大单宽流量闸坝工程消能问题,在分析传统底流消力池体型的基础上,提出将跌坎型底流消力池应用于高水头闸坝工程,并结合实际工程进行了水工整体模型试验,研究了消力池及下游河道水流流态、流速分布、下游河道水面线、河床冲刷情况。结果表明,跌坎底流消力池不仅体型简单、施工难度小,且在各种运行工况下均能获得稳定的流态及较高的消能率,可较好地解决高水头闸坝泄洪消能问题。

Application of Stilling Basin with Step-down Floor in High Head Sluice Dam

In order to solve the dissipation problems for sluice dam projects with high head and large unit-width discharge, stilling basin with step-down floor was proposed based on the analysis of the traditional underflow stilling basin. And then hydraulic characteristics, such as flow pattern, velocity distribution, water surface profile and downstream scour, were obtained by hydraulic model of an actual project. The results show that the stilling basin with step-down floor is of a simple shape and easy construction, and it can obtain stable flow pattern and high dissipation rate, which reduces the downstream scour and effectively solves the dissipation problem of high head sluice dam.