环境敏感区桥梁扩大基础静态爆破参数研究
Research on static blasting parameters for bridge expansion foundations in environmentally sensitive areas
杨顺清 1张兵 2王金星 1谭鹏2
作者信息
- 1. 中交第二公路工程局有限公司,陕西 西安 710065
- 2. 中国路桥工程有限责任公司,北京 100010
- 折叠
摘要
内罗毕国家公园特大桥横跨生态环境极为敏感的国家公园区域,计划在扩大基础岩体时采用静态爆破技术,但桥梁基础的岩石构成了公园区域的无自由边界,针对此,文章选取了装药孔孔径、布孔方式、孔距与排距和空孔孔距等参数,通过数值模拟的方法进行无自由边界静态爆破技术的参数研究,给出了用于指导该桥墩台扩大基础开挖的静态爆破参数取值.
Abstract
The Nairobi National Park Super Bridge spans an ecologically sensitive national park region.Static blasting technology is proposed for the expansion of the foundation rock mass;however,the foundation rock presents a unique con-dition characterized by the absence of a free boundary.This study selects parameters such as charge hole diameter,hole arrangement,hole spacing,and empty hole spacing.Through numerical simulation,the parameters of static blasting tech-nology in the absence of a free boundary are investigated,and specific values are provided to guide the excavation of the bridge pier's expanded foundation.
关键词
环境敏感区/无自由边界/静态爆破/参数研究/岩石开挖Key words
environmentally sensitive area/no-free-boundary condition/static blasting technique/parameter investiga-tion/rock excavation引用本文复制引用
出版年
2025
NETL
NSTL
万方数据