针对南疆铁路吐库二线中天山特长隧道花岗岩段特点,对岩爆预测判据选取进行了研究,确定了中天山隧道隧址区的花岗岩岩性物理力学指标、开挖段洞壁应力分布以及合适的岩爆预测判据等关键技术问题。
With the granite section of Zhongtianshan super-long tunnel' s features in Nan-Jiang railway, prediction criterion selection of rock burst was studied. We determined the physical and mechanical properties of granite, stress distribution of excavation segment, suitable prediction criterion of rock burst and other key technical issues.