隧道浅埋、偏压及岩堆进洞施工技术研究

Research on Construction Technology of Shallow Buried Tunnel,Unbiased Pressure and Rock Pile Entry into the Tunnel

本文介绍了新建铁路成都至昆明线扩能工程峨眉至米易段双线铁路老鼻山隧道出口D1K211+678~D1K211+832段施工过程,重点介绍了此段落存在浅埋、偏压及岩堆体等复杂的地质条件下采取的施工技术措施,通过监控量测,及时进行信息反馈指导施工,目前隧道开挖已顺利通过此段落,希望为以后同类施工问题提供一些方法和经验。

This article introduces the construction process of the D1K211+678~D1K211+832 section of the Laobishan tunnel exit of the Emei-Miyi section of the new railway expansion project of the Chengdu-Kunming line.The construction technology measures taken under complicated geological conditions such as rock piles,through monitoring and measurement,timely information feedback to guide the construction,the tunnel excavation has passed this paragraph smoothly,and hope to provide some methods and experience for similar construction problems in the future.