坡度14％（8°）～70％（35°）、长度在300m以上、断面为55～62m2，包含开挖、支护、二衬及中隔墙全工序作业的反打斜井，国内在此之前尚没有这样的设计和施工先例。在进行调研分析和相关模拟试验的基础上，对设计方案进行了比选优化，采用无轨常规施工设备顺利地建成了通风斜井工程。

The inclined ventilation shaft of No. 1 Qinling tunnel on XiHan highway has a gradient ranging from 14% (8°) to 70% (35°), a length of more than 300m and a crosssection area ranging from 55m2 to 62m2. Furthermore, all the construction sequences of the inclined shaft, including excavation, reinforcement, lining and central diagram installation, are to be executed in reverse direction. There are no preceding cases for the design and construction of similar inclined shafts in China. The designed scheme of the inclined shaft is optimized on basis of adequate investigations and studies and simulation tests. Finally, the inclined ventilation shaft is completed successfully by means of ordinary trackless construction machinery and equipment.