Evolution of pumice reservoir construction

In the Republic of China 17 (1928), Wang Huzhen, a famous water conservancy expert, made a field investigation with his peers and made a joint report. He believes that Xitiaoxi is the source of Taihu Lake and the lifeblood of farmland. The theory of "upstream storage and downstream discharge" is put forward in order to promote the benefits and eliminate the pests. It is suggested to build a flood control wharf (flood control reservoir) in the upper reaches of Xixi River, which can not only prevent floods, but also irrigate, facilitate navigation and avoid floods. Then, the water conservancy department of the government of the Republic of China conducted two investigations on Xitiao River, formulated a control plan, and suggested building a water storage reservoir in Xixi River upstream, but failed.

In the early days of New China, in order to reduce the flood disaster in Xitiaoxi, Anji County built 152 small and medium-sized reservoirs in mountainous areas. However, the project scale of Laoshikan Reservoir in the upper reaches of nanxi river, the main tributary of Xitiaoxi River, is too small to play its due role in flood control and drought relief. In addition, the lack of control backbone projects in Xixi River has not controlled the flood and drought disasters, which has led to the unstable development of industrial and agricultural production in Anji County.

Jiaxing administrative office and Anji county started construction of pumice reservoir in February 1958, but the project stopped in May the following year due to unclear geological conditions and financial difficulties. In 196 1 year, 1962 and 1963 after the project stopped, Anji county suffered from floods for three consecutive years, and the economic losses on both banks and downstream areas of Xitiaoxi River were serious. Therefore, improving the flood control capacity of Xitiaoxi and rebuilding the pumice reservoir have been put on the agenda of the government.

1964, Zhejiang Provincial Department of Water Resources and Electric Power organized engineers and technicians to re-plan and select the dam site and dam type of Fushi Reservoir, and appointed Zhejiang Water Resources and Hydropower Survey and Design Institute to be responsible for the engineering design.

1970 On July 27th, Anji County Revolutionary Committee reported the document Angezi [1970] 160 to Zhejiang Revolutionary Committee, requesting the construction of pumice reservoir. The Provincial Revolutionary Committee approved the construction in the document [1 971]137 of Zhege Minsheng on September.

The project started in September 1972. Jiaxing area organized people in Anji, Changxing and Xing Wu counties and professional construction teams of Zhejiang Hydropower Engineering Bureau to carry out construction. During the construction period, due to different opinions on what dam type to use for the reservoir dam, the construction was once stopped. After Yuan Zijun and other comrades of the Ministry of Water and Electricity went to the construction site to investigate and study, the technical personnel of the organization department and relevant provincial units conducted scientific argumentation and unified their understanding. The Ministry of Water and Electricity issued a document on July 28th 1972 confirming that the reservoir dam is still a clay core sand shell dam, and the construction will continue. Because cadres, the masses and workers carry forward the spirit of hard struggle, the immigrants in the reservoir area take the overall situation into account, and the relevant parties closely cooperate and support them. The whole project, including the dam protection project added in the construction and the Yakengwu flood diversion gate jointly operated with Laoshikan Reservoir, was finally completed in June 1980. After the provincial water resources department organized the acceptance, it was rated as a high-quality project and delivered for use.