The expressway tunnels construction in Henan province used new Austrian tunnelling method, which emphasized on site monitoring and measuring, and improving design and construction using the results.
河南某高速公路隧道工程全部采用新奥法施工，该施工方法的特点之一是注重现场监控量测，并利用量测结果及时补充设计和指导施工。
The development of a new type of axial flow fans used in railway tunnelling is the key research project for solving the difficult problem of ventilation in the construction of long tunnels.
研制新型的铁路隧道施工用通风机，是解决长隧道施工通风技术的关键。本文是这项科研课题的阶段性成果。
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