咸宁南外环李家湾隧道实现双幅贯通

Group 1 - The Li Jiawan Tunnel of the South Outer Ring in Xianning successfully achieved dual-passage completion following precise blasting operations on December 17 [1] - The tunnel features a separated double-tunnel structure, with the left line measuring 720 meters and the right line 690 meters, and a maximum burial depth of 100.27 meters, indicating complex geological conditions [3] - The construction team, Hubei Xingda Road and Bridge Co., implemented collaborative strategies to address frequent rock deterioration, utilizing advanced geological forecasting and real-time monitoring to optimize support parameters and construction plans [3] Group 2 - The project team enforced a 24-hour dedicated monitoring system and established an integrated monitoring center, merging video surveillance with an information management platform for comprehensive visual control of construction activities [3] - The South Outer Ring project is leveraging Xianning Urban Development Group's "100-day offensive" initiative to accelerate progress towards annual goals, contributing to regional transportation enhancement and high-quality development [3]