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石家庄地铁中-解区间交叉渡线下3孔隧道大跨断面暗挖施工技术,阐述了台阶法向双侧壁导坑法过渡衔接,CRD法向双侧壁过渡,过渡等大小断面、不同工法频繁交叉过渡的施工要点,其小断面至大断面的反扩挖技术经验可为今后类似城市地铁工程施工提供借鉴。
The construction technology of long-section cross-section excavation of 3-hole tunnel under cross-overpass in Shijiazhuang Subway is expounded. The transitional connection of stepped normal double-side wall, the transition and other cross-sections of CRD normal double- Frequent cross-transition construction points, its small section to the large cross-section of the anti-expansion technology experience for future similar urban subway project to provide reference.