bottom sill

Sulfide further accumulates where depressions in the bottom of the sill interfere with the flow system and act as natural riffles.

岩床底上如有陷穴，就起到天然溜槽的作用，干扰了岩流体系，使硫化进一步堆积。

0.5m high baffle sill at the slope end of the bottom of stilling basin;

斜坡末断下游消力池底设0.5m高消力槛；

And the test data, the above factors taken into account based on the bottom of the sill or flow dissipation stilling basin shape optimization.

并结合试验资料，在综合考虑以上影响因素的基础上，对跌坎型底流消能工消力池体型进行优化设计。

The results of the simulation also show that it is not suitable to install bottom sill or bottom slope in the project which have side-inflow forebay for improving the flow pattern.

同时计算亦表明，对于闸站合建枢纽此类侧向进水流动，底坎、底坡整流效果不大。