隧道工程浅埋暗挖法施工要点

Outline of Tunnel Construction by means of Method of Undercutting with Shallow Overburden

明确了浅埋地下工程的基础概念,阐述了浅埋暗挖法的基本原理及发展方向,指出了浅埋暗挖法的施工原则。同时对浅埋暗挖各施工方法(全断面法、台阶法、中隔墙法和交叉中隔墙法、双侧壁导坑法、双CD法及特大断面的施工方法包括中洞法、柱洞法、侧洞法和桩柱法)的施工要点,适用范围及条件,优缺点进行了介绍和比较。最后总结强调了浅埋暗挖法施工要点。

The paper clarifies the concept of underground works with shallow overburden, expatiates on the basic principle and development trend of method of undercutting with shallow overburden and presents the principles of construction by means of method of undercutting with shallow overburden. Furthermore, the paper makes a description and comparison of the construction outline, applicable scope and condition, advantages and disadvantages of the different construction methods of undercutting with shallow overburden, which include full cross-section method, top heading/bench method, center diaphragm （CD） method, cross diaphragm（CRD） method, double side drifts method, as well as central drift method, column-drift method, side drift method and pile-beam-arch （PBA） method suitable for tunnels with super-large cross-sections. Finally, the paper summarizes the outline of tunnel construction by means of method of undercutting with shallow overburden so as to achieve emphasis effect.