洋碰隧道位于京珠高速公路粤境北段 ,所处山体地质复杂 ,穿越 2 0多条断层破碎带。在施工过程中 ,右线出口 F12、F16、F17断层破碎带交汇处出现较大规模的突水突泥 ,使掌子面处的初期支护遭到破坏 ,10 0余 m长的已施工段被涌出的泥沙堵塞。对此 ,采用了注浆加固坍塌体 ,长管棚超前支护 ,CRD工法开挖等施工措施 ,顺利地通过塌方段 The Yangpao Tunnel is located at the northern boundary of the Beijing-Zhuhai Expressway and the mountainous area is in a complex geological environment, crossing more than 20 fault-broken zones. During construction, a large-scale water-bursting mud occurred at the intersection of the fault fracture zone of the right exit F12, F16 and F17, causing the initial support at the face of the caisson to be destroyed. More than 10-m-long constructed sections It was clogged with the sediment In this regard, the use of grouting reinforced collapse body, long pipe roof support, CRD excavation and other construction measures, successfully passed the landslide section