【摘要】 该文以数值模拟为主要手段,研究隧洞爆破开挖施工引起的围岩动力响应及其对围岩稳定性的影响。研究表明,隧洞爆破开挖施工时,爆炸冲击荷载会在短时间内造成围岩的破坏,随后主要以爆破振动的形式作用于近区围岩。更多还原

【Abstract】 Blasting is the important way in underground engineering excavation construction,but the shock and vibration effect caused by explosive energy while breaking rock can also lead to the damage of the surrounding rock,it has negative effects on completeness of surrounding rock and the safety of engineering. Based on the numerical simulation,the dynamic response of surrounding rock caused by tunnel blasting excavation has been studied,and the influence of blasting on the stability of surrounding rock has been evaluated. It is shown that during the blasting excavation of tunnel,explosion shock load will lead to the destruction of surrounding rock in short time,then the surrounding rock is mainly influenced by blasting vibration.更多还原