摘要
结合榆佳高速公路佳县隧道的工程特点及施工环境的复杂性,从一次齐发装药量、装药结构、掏槽形式及减振孔布置方案等角度,阐述了减震控制爆破的技术要点。根据分析,通过设置合理地延时爆破雷管段数及时间间隔,可有效减小洞室爆破对围岩及地表建筑物的震动强度,研究内容对相似工程爆破方案有一定参考价值。
Combining with engineering characteristics and complicated construction environment of Jiaxian tunnel of Yulin-Jiaxian highway, technical points of damping control blasting have been discussed from the aspects of once volley charge volume, charge structure, cutting types and layout scheme of damp- ing orifices. According to the analysis result, the vibration strength of surrounding rock and surface build- ings which is caused by chamber blasting could be reduced effectively by setting proper time intervals and reasonable number of detonator for delay blasting. The study has some reference value for similar engi- neering of blasting scheme.
出处
《公路》
北大核心
2013年第6期277-283,共7页
Highway
关键词
公路隧道
控制爆破
干扰减震
装药量
highway tunnel
controlled blasting
interference damping
charge volume
