Has the second stage drainage project (flood diversion and interception) been established in Datian Plain?

2# tunnel is one of the important construction contents of the second stage drainage project in Datian Plain, with a total length of about 2.22 kilometers, an excavation section of 256 square meters and a design flow of 425 cubic meters per second.

Yang, Party Secretary, Chairman and General Manager of the Municipal Water Group, said: "In April 2020, we successfully carried out the first blasting of the entrance section of No.2 tunnel. In June165438+1October of the same year, we successfully organized and implemented the first blasting of the tunnel exit section, opened the second construction face, and started a new stage of two-way tunnel construction and three-layer excavation, which enabled the project construction to enter the' fast lane' in an all-round way. " Among them, the section of No.2 tunnel is Chengmen Cave, and the clear width behind the lining is 14m. The tunnel line is arranged in parallel with Xu 'an 1# tunnel which has been implemented in the first phase of Datian Plain Drainage Project. After completion, it will effectively share the flood control and drainage pressure of the first phase of the project, realize the effect of "eastward division" of upstream mountain torrents, and effectively reduce the flood control and drainage pressure of Datian plot in our city.

"In the next stage, we will implement the blasting construction of the second and third floors of No.2 tunnel to speed up the flood diversion and interception of the second phase of Datian Plain Drainage Project. The sub-project of the second phase drainage project in Datian Plain (drainage project) has an estimated investment of 285 million yuan. The construction content includes the regulation of seven rivers, including Dazhai River, Daqing River, Shuangqiao River, Sanfengxi, Zhang 'ao Village, Houshan 1# and No.2 flood interception ditch, with a total length of 8.65 kilometers and a construction period of 36 months. After the project is completed, it will further improve the urban water environment and enhance the ability of flood discharge and drainage. The second stage drainage project of Datian Plain (drainage project) started construction of the river regulation project in the main city, marking the official start of the river regulation work in the main city of our city. At the construction site of No.2 tunnel of Datian Plain Phase II drainage project (drainage project) in Linhai City, concrete mixers shuttle back and forth, and workers are lining the two walls of the tunnel. The second phase of Datian Plain Drainage Project (Drainage Project) has a total investment of 997 million yuan, which belongs to the 100 billion flood control and drainage project in the province. It consists of three parts: No.2 tunnel drainage project, Linghu drainage gate project and river regulation project in the main city.