对乌鞘岭特长隧道斜井施工的思考

研究目的长大隧道采用增设辅助坑道、长隧短打的施工方法来缩短工期。本文以乌鞘岭特长隧道为例,阐述了斜井辅助坑道施工在长大隧道中的作用。重点说明了斜井辅助坑道的选型及不同斜井运输类型存在的问题,旨在为以后长大隧道采取斜井施工时提供一点经验。研究方法本文将乌鞘岭特长隧道的10#、11#两种不同形式的典型斜井施工方法作比较,将两者在实际施工中的应用和实际效果做类比,研究它们在特长隧道施工中的作用和利弊。研究结果通过10#、11#斜井实际的施工效果,可知两斜井在开设多个工作面辅助正洞施工方面优势相当,但10#无轨运输斜井综合利用指标略高于11#有轨运输斜井模式。研究结论长大隧道采用辅助坑道开设多个工作面,采取“长隧短打”的方法时,斜井是一种很好的辅助施工措施。但在确定斜井类型方案方面,则要综合全面考虑,解决好隧道施工“出碴、进料”两方面的问题。

THINKING ON THE INCLINED SHAFT IN CONSTRUCTION OF WU SHAOLING SUPER LONG TUNNEL

Research purposes: Service gallery and short excavation methods are employed in the digging of super long tunnels to reduce the construction time. In this paper, the function of inclined shaft service gallery construction in super long tunnels is presented which took the Wushaoling super long tunnels as an example. The types of the inclined shaft service gallery and the problems of different haulage types of inclined shaft are emphasized, and this could serve as a useful reference for future construction of similar kinds of shafts. Research methods: The two typical different types of inclined shaft construction methods which are used in 10# and 11# of Wushaoling super long tunnels are compared in two aspects which are practical application in construction and practical effect. The effects, advantages and disadvantages of them are also studied. Research results: The construction effects of 10# and 11# inclined shaft are compared, and they have correspondent advantages in assist main tunnel construction. The integrated use index of 10# inclined shaft with no rail is better than 11# inclined shaft with rail. Research conclusions: when the short excavation method is used in super long tunnel construction, the service gallery is often used to open many working face, inclined shaft is one of these very good methods to assist the construction. The two problems in tunnel construction which is "put the ballast out the tunnel and transfer the support materials into the tunnel" must be solved, and the types of the inclined shaft must be determined with all things considered.