In June 2002, Premier the State Council's office approved the Yiwan Railway Project. In July of the same year, the former State Planning Commission approved the project below.
65438+February 2003 1: The groundbreaking ceremony of Yiwan Railway was held in Enshi Station. February 3, 2004: The Yiwan Railway Construction Command of the Engineering Management Center of the Ministry of Railways was established.
August, 2004 1: Beam-trough tunnel (9 10 meter long) was completed: this is the first tunnel with a complete line.
June 2005 12: Wanzhou Yangtze River Bridge is closed.
June 5438+1October 65438+September 2007: The steel pipe arch of the main span of Yesanhe Bridge was precisely aligned and successfully closed.
May 2, 20071:The continuous beam of Yibuhe Bridge was successfully closed ahead of schedule.
May 24th, 2007: The Baziling Tunnel, a high-risk tunnel, was completed.
June 5, 2007 to1October 5, 2007: Jin Shanshan Tunnel, a high-risk tunnel, was completed.
10, 2007 10: The crossing closure of Dukouhe Bridge on Yiwan Railway was completed safely and successfully.
June 5438+065438+1October 8, 2007: The high-risk tunnel is connected with another rock tunnel.
June 5438+February 2, 20071:The Yiwan Railway Construction Headquarters of the Ministry of Railways was established.
April 2008 1: The main project of Luobuxi Bridge, one of the 25 key control projects of Yiwan Railway, was completed.
April 5, 2008: The main body of Yichang Yangtze River Bridge was completed.
June, 2008 19: Yichang end was formally laid.
September 30, 2008: Dazhiping Tunnel, a high-risk tunnel, runs through.
June 2008 5438+065438+1October 18: high-risk tunnel Yesanguan Tunnel was completed.
165438+20081October 2 1: Track laying began at Wanzhou end.
65438+February 24th, 2008: Maluqing Tunnel, a high-risk tunnel, was completed.
June 5438+1October 65438+July 2009: Yunwushan Tunnel, a high-risk tunnel, was completed.
June 5438+February 2009 10: Qiyueshan Tunnel, the last high-risk tunnel of Yiwan Railway, was completed.
July 30th, 20 10: China Railway Fourth Engineering Group laid the track safely and smoothly, and reached the exit of Maluqing Tunnel.
August 9th, 20 10: China Railway Third Engineering Group arrived at the intersection of Line 1: the intersection of Line 1 was successfully realized. ..
201August 18 10 00: Track-laying of Yiwan Railway: Yiwan Railway Construction Headquarters of the Ministry of Railways held a celebration meeting on track-laying of Yiwan Railway at Baiguo Station.