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北京大栅栏C1-C2地块位于京都繁华地段,其地下通廊工程所处的地质条件、周边环境均较为复杂。施工选择了洞外以复合锚杆桩-袖阀管注浆支护、洞内以全断面注浆-深孔注浆-超前小导管注浆支护后的暗挖衬砌工艺。通过地面和洞内监测,该工艺有效控制了通廊整体稳定性,保证了结构和施工安全。
Beijing Dashilan C1-C2 plot is located in the bustling area of Kyoto, the underground corridor project where the geological conditions, the surrounding environment are more complicated. Construction of the selection of a hole outside the composite anchor piles - sleeve valve tube grouting support, the hole full of section grouting - deep hole grouting - ahead of the small duct grouting support lining excavation process. Through the monitoring of the ground and the cave, the process effectively controls the overall stability of the corridor, to ensure the structure and construction safety.