铁道标准设计2017，Vol.61Issue(3)：129-133,152,6.DOI:10.13238/j.issn.1004-2954.2017.03.027
大直径中空孔在穿越复杂环境控制爆破中的应用研究
Application of Large Diameter Hollow Hole in Controlled Blasting In Complex Environment
摘要
Abstract
To solve the problem of the disturbance caused by blasting vibration where the metro station tunnel passing tilted through buildings, an air blasting program is proposed in perspective of cut hole, auxiliary hole and blasting network with reference to Qingdao Subway No. 1 line Ruijin Road station and finalized by using large diameter hollow hole cutting groove arrangement together with millisecond blasting delay of the hole outside. The results show that: (1) the vibration velocity measured three times in the control blasting program are 0. 47 cm/s, 0. 46 cm/s and 0. 50 cm/s, which are less than the prescribed velocity 1. 5 cm/s for the protected object and effective in controlling the vibration velocity;(2) with the combination of the delay in the hole and the delay outside the hole, the number of initial blasting is reduced from 4 times to 2 times, and blasting efficiency is improved;(3) it is proved that the maximum blasting vibration velocity of the design is found still in the large diameter hollow hole cutting.关键词
地铁车站/大直径中空孔/孔外延期/振动速度/控制爆破Key words
Metro station/Large diameter hollow hole/Hole outside extension/Vibration velocity/Controlled blasting分类
交通工程引用本文复制引用
李梓源,王海亮..大直径中空孔在穿越复杂环境控制爆破中的应用研究[J].铁道标准设计,2017,61(3):129-133,152,6.基金项目
国家自然科学基金项目(10672091) （10672091）
青岛巿建委科技项目资助(JK2013-4) （JK2013-4）
