On February 6, the reporter learned from the Zhengzhou Municipal Construction Committee that the second tender for the civil construction section 10 of the Zhengzhou Rail Transit Line 4 project has begun. The overall project is expected to start construction on March 10 this year. The entire line is scheduled to be holed through on June 1, 2019, and the planned completion date is October 1, 2020.
　　It is reported that the Zhengzhou Rail Transit Line 4 project starts from the west of Jiangshan Road in Huiji District in the north, runs along Sanquan Road, Wenhua Road, Guoji Road, Longhu Middle Ring Road, Longhu, Longyuan 13th Street, Ruyi East Road, Ruyi Lake, Zhongzhou Avenue, Tengfei Road, and Jindai Road, and ends at Hexibei Road Station north of South 4th Ring Road in the south. The total length of the line is 29.287 km, with 28 stations. The main line adopts an underground laying method.
　　The maximum station spacing is 1423.488 m, located between Guoyuan South Road Station and Taibai Road Station; the minimum station spacing is 764.784 m, located between Xinghuo Road Station and Hexibei Road Station; the average station spacing is 1.046 km.
　　Among them, transfers will be made at Changxing Road Station with Line 3, at Wenhua Road Station with Line 7, at Guoji Road Station with Line 2, at Longyuan 8th Street Station with Line 6, at Longhu Middle Ring Road Station with Line 8, at Ruyi Lake North Station with Line 5, at Convention and Exhibition Center Station with Line 1, at Shangdu Road Station with Line 3, at Hanghai East Road Station with Line 5, at Taibai Road Station with Line 14, and at Xinghuo Road Station with Line 12, with reserved conditions for transfer to Line 3.
　　The reporter learned that the project is divided into one tender section, including 2 underground stations and 2 underground shield tunnels (including part of the open-cut section of the depot access line), namely Xinghuo Road Station, Hexibei Road Station, the section from Xinghuo Road Station to Hexibei Road Station, and the section from Hexibei Road Station to Hexi Depot access line. The scope includes civil construction and reserved embedded parts construction, special works, etc. within the tender section.
　　According to the tender announcement, the total planned construction period of Zhengzhou Metro Line 4 is 1301 calendar days. The planned start date is March 10, 2017, and the planned completion date is October 1, 2020. The main structure of the stations is scheduled to take 20 months after the official start of construction, and the entire line is scheduled to be holed through on June 1, 2019.