挤压性围岩隧道变形分级与控制对策

Deformation Classif ication and Control Strategy for Squeezing Surrounding Rock Tunnels

挤压性围岩隧道变形分级和控制对策一直是困扰隧道界的主要技术难题。本文系统地总结和分析了挤压性围岩隧道变形分级的国内外研究现状,建立了挤压性围岩隧道设计阶段变形潜势分级、施工阶段变形验证的分级标准体系,并据此对以往典型的挤压性围岩隧道变形进行了等级划分;通过对以往典型隧道工程变形控制对策的系统总结,提出了对应于变形分级的挤压性围岩隧道变形控制对策。

The deformation classification and control strategy for squeezing surrounding rock tunnels have always been the main technical problems in the tunnel.Research status of deformation classification of squeezing surrounding rock tunnel at home and abroad were summarized and analyzed, the classification standard system of deformation potential classification at design stage and the deformation verification at construction stage for squeezing surrounding rock tunnel was established in this paper,and the typical deformations of the squeezing surrounding rock tunnel were classified based on this.Through the systematic summary of the deformation control strategies for typical tunnel projects in the past, the deformation control strategies for squeezing surrounding rock tunnels were put forward corresponding to deformation classification.