黑石岭公路隧道岩爆预测研究

Research on the rock burst prediction of Heishiling highway tunnel

岩爆灾害一直是困扰大型地下工程施工的技术难题。本文以黑石岭隧道为研究背景,结合现场实际开挖方法,选取典型计算断面,采用GTS有限元软件模拟洞周围岩二次应力分布情况,基于陶振宇判据理论,分析岩爆产生的范围及烈度。研究结果对隧道安全施工有指导作用。

Rockburst problem has been a technical problem puzzled the large-scale tunnel construction.This thesis takes the Heishiling tunnel in Zhangjiakou-Shijiazhuang expressway as the engineering background,simulated the secondary stress distribution around the tunnel rock using finite element software of Geotechnical and Tunnel analysis System,which seledted typical calculation section according with the actual excavation methods,analyzed the rockburst scope and intensity based on the theoretical of Tao Zhenyu criterion.The results have a guiding role in tunnel safety construction.