基于时间与空间效应的隧道锚中夹岩墙变形分析

Deformation Analysis of Tunnel Anchor Rock Wall Based on Time and Space Effects

隧道式锚碇是悬索桥施工中常用的缆索受力系统,常用于地质条件较好的地层,施工的关键环节之一是减少施工对中夹岩层的扰动,本文依托浙江官山某隧道锚工程,基于隧道锚开挖过程的时间和空间效应,分析中夹岩层的变形规律,确定中夹岩墙变形敏感度较高的部位和保证岩墙稳定性的关键时间节点,并提出隧道锚支护强化范围,研究成果可以直接应用于依托工程。

Tunnel anchor is a common cable force system in suspension bridge.It is used in the stratum with good geological conditions.The key point in the course of construction is to reduce disturbance to the rock wall in central.This paper relies on a tunnel anchor engineering in Zhejiang province.The deformation law of central rock wall is analyzed based on time and space effect in the course of tunnel's excavation.The purpose is to determine the key construction tenders of tunnel anchor.