浅埋暗挖施工技术在千岛湖配水工程中的应用研究

Application Study of Shallow Buried Excavation Construction Technology in Qiandao Lake Water Distribution Project

千岛湖配水工程作为一项重要的水利基础设施,提升该工程的安全性具有重大意义。研究将浅埋暗挖施工技术应用于千岛湖配水工程明挖埋管段(钢衬)和洞挖段(钻爆施工)之间的过渡段,通过对该技术性能进行分析发现,其地表沉降最大值为0.11mm,围岩拱顶沉降为5.7m,较其他方法的稳定性更优。在专家评分中,该技术的安全性评分和实用性评分为8.86和8.96分,高于其他对比方法。结果表明,在明挖埋管段和洞挖段间过渡段的应用中,浅埋暗挖施工技术的稳定性能及专家评分最优,具有良好的实际应用价值。

As an important water conservancy infrastructure,Qiandao lake water distribution project is of great significance to improve the safety of the project.The shallow buried and concealed excavation construction technology is applied to the transition section between the open cut and buried pipe section(steel lining)and the tunnel excavation section(drilling and blasting construction)in the Qiandao lake water distribution project,and its performance is analyzed.It is found that the maximum surface settlement of the technology is 0.11mm,and the settlement of the surrounding rock vault is 5.7m,which is more stable than other methods.Meanwhile,in expert ratings,the safety and practicality scores of this technology are 8.86 and 8.96,which are higher than other comparison methods.Based on the above results,it can be concluded that in the application of the transition section between the open excavation buried pipeline section and the tunnel excavation section,the stability performance and expert rating of the shallow excavation construction technology are the best,and it has good practical application value.