超前预注浆加固在厦门海底隧道中的应用  

Application of the Advance Injecting Reinforcement Technology in the Subsea Tunnel of the Xiamen Eastern Passageway

作　　者：苏文德 

机构地区：[1]厦门轨道交通集团有限公司,福建厦门361009

出　　处：《土工基础》2015年第3期69-72,95,共5页Soil Engineering and Foundation

摘　　要：厦门东通道工程是我国大陆自行设计、施工的第一条海底隧道,地质条件复杂,施工技术难度大,面临着穿越陆域浅埋全风化层、隧道穿越海底风化槽、隧道穿越富水砂层与翔安端竖井等重大施工问题。主要研究了超前预注浆加固,试验与实践应用表明,在风化槽各施工阶段中,需要根据围岩风化程度和出水量采用不同的超前预注浆和超前预支护手段;TSS小导管后退式注水泥水玻璃双液浆能有效加固富水砂层。研究成果形成了较完整的海底隧道施工技术,为我国海底隧道施工的发展积累了经验。The eastern passageway project in Xiamen is the first subsea tunnel in China's Mainland that was ever designed and constructed by Chinese professionals.The tunnel is design to be under the shallow buried depth in completed weathered on land segment and to pass the weathered trench under the sea.The potential construction difficulties include the penetration of the saturated sand strata and the vertical shaft construction in Xiangan.In summary,the complexities of the geological conditions is more than any of the subsea tunnels ever been constructed in the world.This paper discusses the characteristic and difficult aspects of the subsea tunnel crosses the water-enriched sandy strata and the weathered trench as well as the application of the advance grouting and reinforcement technique.The results show that：（1）in different construction stages of the weathered trench,the different advance grouting should consider both the surrounding rock degrees of weathering and water contents;（2）the TSS small diameter pilot pipe the cement silicate grout can effectively reinforce the water-enriched sandy strata.

关 键 词：海底隧道 厦门东通道 施工技术 超前预注浆 支护加固 

分 类 号：U456[建筑科学—桥梁与隧道工程]