Recently, the left tunnel of the shield-driven section from Yingze East Street Station to Chaoyang Street Station on Taiyuan Rail Transit Line 1, jointly invested and constructed by China Railway Construction Investment Group and participated in by China Railway 18th Bureau Group, was holed through, marking the completion of double-line holing-through of the deepest shield-driven section on the entire line.

The maximum burial depth of the section from Yingze East Street Station to Chaoyang Street Station is 38 meters, making it the deepest shield-driven section of Taiyuan Metro Line 1. After departing from Yingze East Street Station, the section runs along the eastward extension of Yingze Street, passes beneath several residential buildings of Taiyuan Railway Bureau dormitories, then turns south and runs along the west side of East Middle Ring Road, and finally connects to Chaoyang Street Station. The shield-driven section has a curve radius of 400 meters and a total length of 760 meters, forming an "L"-shaped alignment with a small radius and a large longitudinal slope, which imposes extremely high requirements on the precision control of shield tunneling and quality control.

The construction team strictly followed the overall deployment requirements, continuously optimized the construction organization plan, and comprehensively reviewed potential safety risks in all links. It strictly implemented the leadership shift system, continuously strengthened ground patrol and data monitoring, ensured proper emergency coordination between above-ground and underground operations, and promptly resolved unexpected on-site situations. At the same time, it used the information platform to conduct comprehensive tracking of the shield machine, carried out daily technical analysis of various parameters, and promptly conducted process reviews and real-time adjustments, ensuring safe, stable and efficient shield tunneling and providing strong guarantees for the smooth realization of double-line holing-through of the shield-driven section.