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

作　　者：杨顺清 张兵 王金星 谭鹏 Yang Shunqing;Zhang Bing;Wang Jinxing;Tan Peng(China Communications Second Highway Engineering Bureau Co.,Ltd.,Xi’an Shaanxi 710065,China;China Road and Bridge Engineering Company Limited,Beijing 100010,China)

机构地区：[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

出　　处：《山西建筑》2025年第4期129-133,共5页Shanxi Architecture

基　　金：北京科委课题(课题编号:Z181100003918005);中国交建科技研发项目(项目编号:2017-ZJKJ-08)。

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。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 condition 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 technology 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 

分 类 号：TU997[建筑科学—市政工程] U443.1[建筑科学—桥梁与隧道工程]