China News Service, Xining, December 29 (Sun Rui, Li Xinye) The reporter learned from the State Power Investment Corporation Yellow River Hydropower Company ("Yellow River Company") on the 29th that at 21:16 on the 28th, the last vehicle at the site of the Yangqu closure The big boulders were pushed into the river and the closure and dike were successfully closed, marking the successful closure of the Yangqu Hydropower Station developed and constructed by the company.
The Yellow River Yangqu Hydropower Station is located at the junction of Xinghai County and Guinan County in Hainan Tibetan Autonomous Prefecture, Qinghai Province. It is the lowermost level of the three planned cascade power stations "Ciha, Banduo and Yangqu" on the upper reaches of the Longyangxia Hydropower Station on the mainstream of the Yellow River. The main task is to generate electricity.
The total installed capacity of the power station is 1.2 million kilowatts, and the total storage capacity of the reservoir is 1.639 billion cubic meters. It is estimated that the first unit will be put into operation in July 2024.
According to reports, the interception started at 11:48 on the 26th and lasted 57 hours and 28 minutes. The left bank to the right bank was blocked by a single bank.
"The successful closure of the Longkou section of the cofferdam and dike marks that the Yangqu Hydropower Station has entered the construction phase of the main project. It also laid the foundation for the scheduled power generation target. Next, the excavation of the abutment on both sides of the bank, the filling of the upstream cofferdam and the cofferdam will be carried out. Anti-seepage wall construction, etc." said Wang Yuxiao, deputy general manager of the project construction branch and deputy leader of the closure leading group.
Sun Yujun, chief expert of the State Power Investment Group Co., Ltd. Yellow River Upstream Hydropower Development Co., Ltd., previously stated that the Yellow River Yangqu Hydropower Station first adopted a concrete-faced rockfill dam type, which can greatly reduce the amount of plinth excavation in the narrow valley and at the same time. The settlement of the dam will provide good engineering practice experience for the construction of high-face rockfill dams in China.
The Yellow River Yangqu Hydropower Station is a first-class (Ⅰ) type project. After the power station is completed and put into operation, it can save 1.467 million tons of standard coal consumption, reduce carbon dioxide emissions by 4.412 million tons, reduce carbon monoxide emissions by 385.8 tons, and reduce nitrogen dioxide emissions each year. 1,6956.2 tons, reduced the emissions of harmful substances such as smoke and dust, 1,9845.8 tons, and achieved significant energy saving and emission reduction benefits.
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