由我院机械系承担的中铁建总公司科技项目“单线隧道独头掘进2000米软管通风技术”课题取得了阶段性研究成果。该课题主要是结合“引大入秦”24号隧洞进口工程施工,研究通风系统的合理布局形式及长距离管道通风的设计理论与计算方法、改进软管结构及接头形式、提出长距离软管通风的技术管理规程等内容。经过一年多的研究工作,课题组提出了“扩大管 The scientific research project of “China Railway Construction Corporation” undertaken by the Department of Mechanical Engineering of China Railway Construction Corporation won the phased research on the project of “2000 m hose ventilation technology for single tunnel tunneling alone”. This subject mainly combines the design theory and calculation method of the reasonable layout of ventilation system and the ventilation of long-distance pipelines to construct the inlet of No.24 tunnel of “Introducing the Dachenqinqin”, improving the structure of the hose and the form of joints, and proposing the long-distance hose Ventilated technical management procedures and so on. After more than a year of research work, the research group proposed "to expand the management