高黎贡山隧道花岗岩岩石高温单轴压缩试验研究

摘要

Gaoli Gongshan Tunnel located in the place with specific high stress and high terrestrial heat, so rock burst may occur during construction. In order to identify the physical and mechanical properties of hard rock in the tunnel under high temperature, high-temperature uniaxial compression test was carried out on granite as the representative for hard rock with the purpose to provide scientific evidence for rock burst evaluation. The results showed that II-type failure is the main mode from the shape of stress-strain curve with the possibility of rock burst.%高黎贡山隧道位于特定的高地应力和高地热条件下，施工中可能发生岩爆。为了查明高温下隧道硬质岩的物理力学性质，以占隧道硬质围岩绝大部分的花岗岩为代表，进行了高温单轴压缩试验，以期为工程岩爆评价提供较为科学的依据。研究结果表明：从试样应力一应变关系曲线的形状看，主要为Ⅱ型破坏，有发生岩爆的可能。