摘要
大跨度地下洞室顶拱锚喷支护结构在爆破震动作用下的稳定问题是决定地下厂房安全施工与运行的关键因素,运用动力有限元数值模拟,研究了该类型支护结构在爆破震动作用下的动态响应特点,得出了结构中峰值振速和峰值应力的分布规律。
The stability of the large-span arch structure of lock bolt support and surrounding rocks under the effect of blasting vibration is a key factor during the construction and operation of the underground chamber. On the basis of simulation with the Dynamic Finite Element Method,the dynamic response of the integrated structure under the effect of blasting vibration is studied ; and the nile of the peak velocity profile and peak tensile stress profile in the structure is also analyzed.
出处
《爆破》
CSCD
2006年第1期14-18,共5页
Blasting
关键词
大跨度地下洞室
支护结构
爆破震动
动态响应
large-span underground chamber
support structure
blasting vibration
dynamic response
