Dam capping of Dashimen Water Control Project in Xinjiang
Xinhua News Agency, Urumqi, November 17 (Reporter Li Zhihao and Zhou Ye) A few days ago, as one of the 172 major water conservancy projects in the country, the dam of the Dashimen Water Control Project in Xinjiang was successfully capped, and the dam was filled up to a height of 2304 meters. The purpose of this paper is to lay a solid foundation for selecting the opportunity to complete the major node goal of water storage in the lower gate next year.
The Dashimen Water Control Project is a large (2) Type II project, which is located on the Chechen River in Qiemo County, Bayinguoleng Mongolia Autonomous Prefecture, Xinjiang. The dam site is located 300 meters downstream of the confluence of the Chechen River and the Tuojiri River. The dam is a roller compacted asphalt concrete core dam, which belongs to the highest dam of the same type under construction in China.
The total investment of the project is 1.9 billion yuan, the total construction period is 48 months, the main contractor is China Hydropower Construction Group Tenth five Engineering Bureau Co., Ltd., the main task is flood control, power generation, taking into account irrigation. The height of the dam is 128.8 meters, the length of the dam top is 205 meters, and the width of the dam top is 12 meters. The total capacity of the reservoir is 127 million cubic meters and the regulated capacity is 99 million cubic meters. The normal water level of the reservoir is 2300 meters, the elevation of the dam top is 2304.5 meters, and the power station is installed with 60 megawatts.
After the completion of the Dashimen Water Control Project, combined with the downstream dike project, the flood control standard of the Chechen River can be raised from once in 3 years to once in 20 years. At the same time, it can provide clean energy to the Qiemo county power grid and greatly improve the electricity consumption conditions of the people's livelihood in Qiemo county. The irrigation guarantee rate of the Chechen River irrigation area will also be guaranteed, and the problem of seasonal water shortage in the irrigation area is expected to be alleviated.
Construction of Dashimen Water Control Project began in May 2016 and dam filling began in January 2018, and the target of water storage in the lower sluice is planned to be achieved in October 2020.