摘要
以浙江省338座公路隧道为研究对象,系统分析了区域条件下浙江省隧道围岩分级的关键影响因素。基于BQ分级法框架,将复杂的地质参数概化为隧道规模和地层岩性两大核心要素。研究显示,隧道长度与围岩质量呈显著正相关,短隧道Ⅴ级围岩占比高达32%,而长隧道仅占7%;地层岩性方面,火山岩类(①类)围岩质量最优,长隧道中Ⅲ级及以上围岩占比达68%,白垩系红层(Ⅱ类)次之(58.9%),古生代沉积岩(Ⅲ类)最差(44.4%)。研究揭示了浙江省特殊地质背景下,隧道规模与岩性组合对围岩分级的控制规律。
This study systematically analyzes the key influencing factors of surrounding rock classification for tunnel engineering in Zhejiang Province by investigating 338 highway tunnels.Within the framework of the BQ classification method,complex geological parameters are generalized into two core elements:tunnel scale and lithology.The research reveals:A significant positive correlation exists between tunnel length and surrounding rock quality.Short tunnels exhibit a high proportion(32%)of Grade V surrounding rock,while long tunnels show only 7%.Regarding lithological control:volcanic rocks(Category①)demonstrate optimal rock quality,with GradeⅢand above surrounding rock accounting for 68%in long tunnels,followed by Cretaceous red beds(CategoryⅡ,58.9%),while Paleozoic sedimentary rocks(CategoryⅢ)show the poorest performance(44.4%).The study reveals the control laws of tunnel scale and lithological combination on surrounding rock classification under the special geological background of Zhejiang Province.
作者
邵长杰
徐国锋
刘万忠
SHAO Chang-jie;XU Guo-feng;LIU Wan-zhong(Zhejiang Institute of Communications Co.Ltd.,Hangzhou 310030,China)
出处
《工程建设与设计》
2025年第16期86-88,共3页
Construction & Design for Engineering
基金
浙江省交通运输厅科技计划项目(平安百年品质工程科研专题)(2025014)。
关键词
隧道围岩分级
BQ分级法
地层岩性
unnel surrounding rock classification
BQ classification method
strata lithology
