In all environmental damages induced by subway tunnelingexcavation, the prediction and control of the ground surface subsidence are the important problems to have to be solved.
地铁施工诱发地层环境损伤的众多问题中，地层沉降的预测与控制是急待深入研究的重要课题。
2
Also the principle of NATM (New Austrian Tunneling method) and the method of excavation and shoring in tunnel construction are being given.
文章也介绍了新奥法的原理以及隧洞的开挖和支护方法。
3
Shield tunneling method has become a primary method in underground excavation with its predominance, earth pressure balanced shield tunneling (EPBS) is the most universal type in our country.