吉首大学学报（自然科学版）2016，Vol.37Issue(4)：25-28,4.DOI:10.3969/j.cnki.jdxb.2016.04.006
溶腔与隧道拱顶间预留岩塞厚度的计算方法
Method for Calculating Rock Plug Safe Thickness in Karst Tunnels
熊战辉1
作者信息
- 1. 湖南常德公路工程总公司，湖南常德 415000
- 折叠
摘要
Abstract
In view of a filled karst cave existing on the tunnel vault and based on the limit analysis theo‐rem ,a proper failure pattern is established and the specific procedures are deduced to derive the expres‐sion of rock plug thickness .T hen ,the proposed method is adopted to calculate the rock plug thickness corresponding the surrounding rock ranging from level ⅠtoⅤ .The results indicate that with the decrease of surrounding rock strength ,the thickness increases continuously .Moreover ,applying the method to the engineering projects of Dazhiping Tunnel of the Yichang‐Wanzhou Railway ,the reasonable results were obtained ,w hich verified the validity of the proposed method .关键词
岩溶隧道/极限分析原理/岩塞厚度/围岩等级Key words
karst tunnels/limit analysis theorem/thickness of rock plug/surrounding rock levels分类
交通工程引用本文复制引用
熊战辉..溶腔与隧道拱顶间预留岩塞厚度的计算方法[J].吉首大学学报（自然科学版）,2016,37(4):25-28,4.
