蒲石河抽水蓄能电站下水库大坝施工导流设计

Construction diversion design of lower reservoir dam for Pushihe pumped storage power station

蒲石河抽水蓄能电站工程下水库大坝为混凝土坝,由7孔排沙闸、挡水坝段组成。施工洪水具有典型东北山区河流陡涨陡落的特点,多集中在7,8月份。下水库大坝施工导流采用分期导流方式,一期主河床过流,二期采用过水围堰挡水、坝体导流底孔过流。文章介绍了蒲石河抽水蓄能电站工程下水库施工导流设计,结合施工工期的选择,简要论述了导流标准、导流方式以及导流建筑物布置情况。

The lower reservoir dam of Pushihe pumped storage power station is the concrete dam,which is composed by the 7 holes desilting gates and retaining dam section.The construction flood mostly concentrated in July and August,has the typical features of peak with rising and dropping steeply in northeast mountain rivers.The stage diversion mode is adopted for the construction of lower reservoir dam,main riverbed sluicing in the first-phase construction and overflow cofferdam retaining water and dam diversion bottom outlet drainage in the second-phase construction.The paper introduces the diversion design of the lower reservoir construction for the Pushihe pumped storage power station,briefly discusses the diversion standards,the diversion mode and the arrangement of the diversion structures combinning with the choice of the construction period.