浅水垫消力池水力特性试验

为解决常规消力池临底流速大，流态不稳等问题，以云南省楚雄州青山嘴水库工程为例，通过水工模型试验，提出浅水垫消力池的体型；揭示了浅水垫消力池的水流流态、流速分布、水面线形态和压力分布等水力特性,并与常规消力池与下挖式消力池进行了对比。结果表明浅水垫消力池有利于降低消力池临底流速，浅水垫的存在改变了消力池内的水流流态，改善了池内水力学特性，消能效果显著。

Experimental investigation on hydraulic properties in Stilling Basin with Shallow-water Cushion(SBSC)

In order to solve the problems of high velocity near bottom, unstable flow pattern, in conventional stilling basin, based on physical model test of the Qingshanzui Project in Chuxiong, Yunnan, China, a new type of stilling basin -- Stilling Basin with Shallow-water Cushion (SBSC) was proposed, and its hydraulic performances such as the flow pattern, velocity distribution, pressure distribution on bottom and energy dissipation have been studied through the model experiment. The experimental results indicated that the SBSC is favorable for decreasing the velocity near bottom, changing the flow pattern and improving the hydraulic performances in the stilling basin, so that it can stabilize the flow pattern and increase the rate of energy dissipation. The SBSC is of high energy dissipation rate with a low construction cost comparing with the conventional stilling basin.