Hangzhou metro line 7 opened its first tunnel

On October 14, as the 609 shield cutter broke through the earth, the right line shield between fengjing and yipeng station on line 7 of hangzhou metro was the first to be cut through, becoming the first tunnel on line 7 of hangzhou metro and the first shield cut through in the area since the establishment of qiantang new area in hangzhou.

Between 2 wind well ~ YiPeng station right line length 1539.139 meters, the tunnel buried depth in 9.75 ~ 18.4 meters, shield since starting on June 2nd, China railway SuiDaoJu municipal engineering projects department constantly optimized perfect shield construction scheme, scientific organization construction, the reasonable allocation of resources, has overcome the interval operation, poor geological conditions and environment more complicated, major risk source concentration, earthwork sinotrans many difficulties, such as "all staff joining into the high strength management, high standard, high quality construction, after 4 months, change of shield starting late, mechanical equipment period long passive situation, From the lag to catch up to the reverse, until the first through, showing the determination of the municipal engineering company and dare to fight the confidence.

Study cities to create the future. Fe SuiDaoJu municipal engineering company in shield tunnel construction process, continuously improve shield construction plan, strengthen the construction organization, internal monitoring of shield posture and tunneling parameters, assembling quality and enhance the segment paste skill, external coordinating external links, reasonable allocate earthwork sinotrans, trial and error, running-in, improvement, for the rapidly increase of shield construction, and has obtained the remarkable effect. On September 18, the right line between fengjing no. 2 and yipeng station successfully broke through the thousand-ring road, becoming the first shield tunneling tunnel across the whole line to break through the 1,000-ring road. On September 22, both the shield tunneling on the left and right lines of the interval broke the 400th ring, breaking the highest record of one-month tunneling on the whole line. The shield tunnel on the right line takes the lead in breaking through, completing the node target ahead of schedule, laying a solid foundation for the overall tunnel breaking through, and ensuring the opening of an important transportation hub of the Asian games.