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Study of Key Construction Technology for Underground Power House Complex in Pumped Storage Power Station Project
Pages: 1-6
Year: Issue:  5
Journal: Dam Observation and Geotechnical Tests

Keyword:  pumped storage power station(PSPS)underground power housesite selectionexcavation and supportseepage prevention and drainage control;
Abstract: In Guangdong Province, China, Guangzhou Pumped Storage Power Station(Phase Ⅰ & Ⅱ) and Huizhou Pumped Storage Power Station(Plant A and B) have been built, while another two, i.e. Qingyuan Pumped Storage Power Station and Shenzhen Pumped Storage Power Station are under construction at present. The pumped storage power station(hereafter simplified as PSPS) is a sort of deeply buried underground power station with high head. Due to the upstream and downstream of underground power house complex are located in complicated geologic underground environment which below the high water level of reservoir, it is of great importance for site selection, excavation and support, as well as underground water interception and drainage control system of underground power house. This paper mainly introduces the methods of site selection, power house construction control and seepage prevention and drainage control system of underground power house, especially for manifold, which have been adopted in PSPS in Guangdong under complicated geologic and underground environment. Experience learned from those projects can provide reference for other pumped storage power stations and similar large-scale underground projects.
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