高地应力环境下平行导洞与正洞合理净距的数值分析

在诸多高地应力深埋长大隧道工程中,最需解决的就是高地应力所带来的地质灾害问题,而平行导洞可以为正洞起到卸压作用、为其探明地质、也可作为排水通风坑道,这些优点使平行导洞成为了正洞最主要的辅助坑道。以高地应力环境为研究背景,采用数值模拟的方法,分析了平行导洞与正洞之间的合理净距,计算结果表明:平行导洞与正洞的合理净距为8m,得出了特定条件下平行导洞与正洞最小净距的参考值。

Numerical Analysis Of Reasonable Spacing Between The Parallel Pilot And The Main Tunnel In The High Geostress Environment

In many high geostress deep and long tunnel project,the most need to be solved prohlem which is the high geostress brought geologi- cal disasters,the parallel pilot can to be relief effect for the main tunnel,and proven geological for it,and also can to be the drainage ventilation tun- nel,these advantages make the parallel pilot become the most important tunnel, with high geostress environment for the research of background,using numerical simulation method,researching the reasonable spacing between the parallel pilot and the main tunnel,the simulation results show that the reasonable spacing between the parallel pilot and the main tunnel is 8 m, at last, getting the reference value of the minimum spacing between the par- allel pilot and the main tunnel in specific conditions.