多溶洞隧道围岩应力解析解研究

Analytical Solutions of Surrounding Stress Fields in Multi Caves Tunnel

基于复变函数,推导了双溶洞隧道之间相互影响的应力解析解。研究表明:当溶洞距隧道位置不变的情况下,溶洞洞径越大,隧道围岩应力越大;当溶洞洞径以及溶洞距离隧道位置不变的情况下,溶洞离隧道越远,隧道围岩应力越小;当溶洞洞径以及溶洞与隧道距离不变的情况下,溶洞的位置分布不同,隧道围岩应力的分布会改变。

Based on the complex function,it deduced the stress of analytical solution for the mutual influence between pairs of karst cave and the tunnel. Research shows that： When the cave under the condition of invariable distance on tunnel position,the greater karst cave hole diameter, the tunnel surrounding rock stress is larger; When cave hole diameter and caves under the condition of invariable distance on tunnel location,the further away from the tunnel karst cave, the smaller the tunnel surrounding rock stress; When cave hole diameter and karst cave artd the tunnel under the condition of invariable distance,location distribution of the karst cave,tunnel surrounding rock stress distribution will change.