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在山区开发的小型水电站中,径流式电站占有相当大的比例,其电站前池,一般都建在较为陡峻的山坡上。据我省数十处电站的统计,每立方米前池容积的投资额,一般均在50至100元以上。因此,合理确定前池容积,对节省电站投资有很重要的意义。径流式电站的前池,其主要作用是:(1)配水:主要取决于前池的布置和造型,以使水流顺畅而又均匀地进入压力水管;(2)拦污、沉沙:要求前池具备一定的过流断面和长度,以降低流速(0.8米/秒以下),并采取必要
Of the small hydropower stations developed in the mountains, runoff power plants account for a significant proportion of the power plant front ponds, which are generally built on steeper hillsides. According to the statistics of dozens of power stations in our province, the investment amount per cubic meter of front pool volume is generally above 50 to 100 yuan. Therefore, it is very important to save the investment of power station by reasonably determining the volume of forecourt. The main functions of the front runner of a radial flow power station are as follows: (1) Water distribution: it mainly depends on the layout and shape of the front pool so that the water flows smoothly and evenly into the pressure water pipe; (2) The pool has a certain over-flow section and length to reduce the flow rate (0.8 m / s or less) and take the necessary