| The pumped-storage power station is a special hydrodynamic power station. It is the most perfect power in power system. reservoir basin leakage in pumped-storage station not only affect the benefit of circulating but affect security of its producing. Based on some theory, reservoir basin leakage was comprehensively studied with the analytical method in this paper and some useful conclusion were obtained. The main studies of this paper were as following:(1) The penetrability of the medium which compose the base of reservoir basin and the affection of slucing were analyzed in this paper. The circs of geology in Hong Ping pumped-storage power station was introduced and the conditions of geology was analyzed by the author.(2) he author narrated the theory of tracing experiment , analyzed the outcome of tracing experiment to judge the alleyway of seepage, and found out reservoir basin seepage in Hong Ping pumped-storage power station, and estimated the permeability coefficient of cranny.(3) The method of classifying of cranny by joints occurrence in rock mass was studied. The theory of estimating the permeability coefficient of cranny in rock mass was introduced. The author classified the cranny in rock mass of Hong Ping pumped-storage power station by cluster analysis.(4) The seepage model the epoch of sluicing in pumped-storage power station was studied in this paper. The author brought forward the method of quantifying of seepage, and the level of groundwater after sluicing, which are correspond to the seepage model. Calculated the quantity of seepage in Hong Ping pumped-storage power station during sluicing and after sluicing by author.
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