【摘要】 在大跨隧道的修建中 ,选择一套合理的设计和施工方案是十分重要的。本文以新建内昆铁路金竹林隧道进口端双线车站大跨隧道为例 ,较为详细地介绍了该隧道洞口段的山体滑移整治 ;洞口车站大跨段通过断层在设计上的特点 ;车站大跨段通过断层的施工方案比选等。文中提供的监控量测数据可作为今后类似条件下隧道结构设计的参考。更多还原

【Abstract】 It is quite important to choose a rational design and construction scheme for construction of large span tunnel.Taking the large span tunnel for the railwy station at the entrance of Jinzhulin Tunnel of Neijiang-Kunming Railway as an example,the treatment of rock sliding at the portal was described in detail.The difference of design of a tunnel section with large span for railway station at the portal,which passes through faults from that of tunnel for ordinary raliway station,was described as well.Various construction programs for this tunnel section were compared.The data recorded during monitoring can serve as reference for design of similar tunnel.更多还原