引水隧洞开挖对既有铁路隧道的影响研究

随着水利水电在西部大开发中的大力发展,出现了大量的引水隧洞,部分项目在修建过程中不可避免地影响到既有铁路隧道。漫滩电站引水隧洞工程,在隧洞开挖过程中,与成昆铁路花果山下33 m处近似正交穿越,其安全性至关重要。采用数值模拟和现场试验相结合的方法,分析了引水隧洞的开挖对既有铁路隧道的影响,并采取相应措施,保障了引水隧洞的施工安全和既有铁道的安全运营。供类似工程参考。

Study on Influence of Diversion Tunnel Excavation on the Existing Railway Tunnel

As the water conservancy and hydropower develop rapidly in China western development, a large amount of diversion tunnel has been built, wherein a part of projects may influence the existing railway tunnel in the construction inevitably. For the project of diversion tunnel in Mantan Power Station, during the excavation, it passes Chengdu-Kunming Railway making an approximate right angle 33m beneath Huaguoshan Mountain so that the safety thereof is very important. Through numerical simulation together with field test, the influence of the tunnel excavation on the existing railway tunnel was analyzed, and with corresponded measures, the safety in both construction of diversion tunnel and operation of existing railway was secured. For similar projects to reference.