近距侧爆情况下马蹄形隧道动态响应特点的研究

The Research on the Dynamic Response of A Hoof-Shaped Tunnel to an Ajacent Blasting

本文在数值模拟和动光弹试验研究的基础上，对马蹄形隧道在邻近爆破作用下的动态响应特点进行了分析，并在综合考虑入射应力波波长、隧道直径、爆源与隧道的相对距离的基础上，提出了隧道迎爆一侧的动应力集中因子的近似确定方法，为今后邻近隧道的爆破施工安全提供了有益的参考。

?The dynamic response of a hoof-shaped tunnel to an adjacent blasting is studied by numerical simulation and dynamic photoelastic experiment and a method of determining dynamic stress concentration factor on surrounding rock facing the charge is putforward in this paper, which takes incident wavelength, tunnel radius and distance between charge and tunnel into account and presents a helpful reference for the safety oftunnel nearby blasting in the future.