开挖爆破对邻近隧洞的震动影响研究A STUDY OF THE EFFECT OF BLASTING VIBRATION ON ADJACENT TUNNEL
易长平,卢文波
YI Chang-ping;LU Wen-bo (State Key Laboratory of Water Resources and Hydropower Engineering Science;
摘要(Abstract)：
爆破震动对邻近隧洞的影响及其控制是水利、铁道、交通等工程建设过程中的关键技术问题。运用动力有限元数值模拟 ,研究了爆破震动对邻近隧洞的影响问题。比较了掌子面上的崩落、缓冲、光面等不同炮孔爆破、不同分段方式和起爆顺序对邻近隧洞的震动影响。在确定邻近隧洞周边峰值振速和峰值拉应力分布的基础上 ,分析了开挖爆破对邻近隧洞震动影响的关键因素 ,并提出了合理的起爆顺序和爆破震动控制措施。
The effect of blasting vibration on an adjacent tunnel and its control is a key technology during the construction of hydraulic,railway and traffic projects.On the basis of the simulation with the Dynamic Finite Element Method,the effect of blasting vibration on the adjacent tunnel is studied.The influences of detonating different holes on a working face,such as reliever,buffer and peripheral holes,on the adjacent tunnel are compared and analyzed.At the same time,the effect of blasting vibration from different initiation sequences on the adjacent tunnel is studied.In accordance with the distribution of peak particle velocity and peak tensile stress along the periphery of the adjacent tunnel,the main factors of which the adjacent tunnel is affected by blasting vibration are analyzed,and a reasonable initiation sequence and some measures to control the effect of blasting vibration on adjacent tunnel are proposed.
关键词(KeyWords)：
隧洞掘进;爆破震动;起爆顺序;数值模拟
Tunneling;Blasting vibration;Initiation sequence;Numerical simulation
基金项目(Foundation): 教育部科学技术重点项目 (0 2 13 3 );; 湖北省自然科学基金项目 (2 0 0 2AB0 0 6)
作者(Authors):
易长平,卢文波
YI Chang-ping;LU Wen-bo (State Key Laboratory of Water Resources and Hydropower Engineering Science;
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